News: Bioteknikhttp://www.chalmers.se/sv/nyheterNews related to Chalmers University of TechnologyFri, 10 Mar 2017 10:38:18 +0100http://www.chalmers.se/sv/nyheterhttp://www.chalmers.se/en/departments/bio/news/Pages/BIO-professor-elected-member-of-IVA.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/BIO-professor-elected-member-of-IVA.aspxBIO-professor elected member of IVA<p><b>​Lisbeth Olsson, Professor at the division of Industrial Biotechnology, have been elected a new member in IVA. “Great to become part of a for me new and exciting environment”, she comments.</b></p>​IVA, The Royal Academy of Engineering Sciences, released the news on Wednesday: eight new members was elected. One of them is Lisbeth Olsson, Head of division and Professor at the Department of Biology and Biological Engineering.<br />– IVA consists of representatives from both academia and industry, it’s an excellent platform for networking. Important societal challenges are addressed, and this means an opportunity for me to be even more active in the development in society, to influence change and also understand how to make an impact, she says.<br /><br />IVA has 1300 members, of which 1000 are Swedes, and they are divided into 12 divisions. The divisions monitor, analyse and impact important issues within their field by, for example, organizing seminars. The members also work on referral responses to the Government, and are active in Programme Council and projects. The current projects include, for instance, Innovation in the Forest Industry, Electricity Crossroads, Good Cities of the Future, and Aspects of Energy.<br /><br />Lisbeth Olsson have, following a nomination, been elected into the division of Chemical Engineering.<br />– I don’t know exactly how the work and engagement in IVA take place. But since my work is interdisciplinary, and I work with both academia and industry, I believe I can contribute in bridging between parties, she says.<br />– I care deeply about bioeconomics, and I see that different parts of the industry need to come together to address different aspects of our issues. Perhaps I can contribute with knowledge and facilitate meetings.<br /><br />Read more about IVA on the <a href="http://www.iva.se/en">academy’s web page</a><br /><br />Text: Mia Malmstedt<br />Photo: Martina Butorac<br />Thu, 02 Mar 2017 15:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Research-break-through-Producing-gasoline-in-yeast-cell-factories.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Research-break-through-Producing-gasoline-in-yeast-cell-factories.aspxResearch break-through: Producing gasoline in yeast cell factories<p><b>​There have been many attempts to modify this stubborn little enzyme. But none have succeeded, until now. With new findings from Chalmers the enzyme FAS has started to produce sustainable chemicals for biofuels.</b></p>​We are in great need of sustainable and clean alternatives to oil-derived products. One of the choices at hand is to produce chemicals and biofuels from sustainable biomass.<br /><br />To do this, researchers in the group of Professor Jens Nielsen at the Department of Biology and Biological Engineering is hard at work trying to design yeast cell factories that can actually produce the chemicals we need in a sustainable way. The group now had a major break-through, as they developed a novel method of changing the enzyme FAS, fatty acid synthase, into producing new products.<br />– This enzyme normally synthesizes long chain fatty acids, but we have now modified it into synthesizing medium chain fatty acids and methyl ketones – chemicals that are components in currently used transportation fuels, Post-doc Zhiwei Zhu explains.<br />– In other words: We are able to produce gasoline and jet fuel alternatives by yeast cell factories, and this has never been done before.<br /><br />The important enzyme was first elucidated by Nobel Prize winner Feodor Lynen, and many researchers have in recent years tried to modify it. But it seemed very hard, or close to impossible – until now.<br />– We did not expect this. Actually, it was thought by the scientific community that this rigid enzyme was not readily amenable to manipulation, says Zhiwei Zhu.<br /><br />The findings are in fact a result of a lucky break. A few years ago, the researchers occasionally found a FAS which had two acyl carrier protein domains.<br />– We first tried to change this FAS by replacing one of its acyl carrier protein domains with a foreign enzyme to render it new activities, and surprisingly it worked. Then we implemented such modification in other fungal FASs and found this approach versatile.<br /><br />The researchers are now focusing on using the modified enzyme to build yeast cell factories for production of chemicals and fuels. An invention patent has been filed, and the company Biopetrolia – a spin-off company to the Chalmers department – are closely involved, trying to further develop the technique to make it economically viable.<br /><br />But as a researcher, Zhiwei Zhu also has a long-term goal of his own:<br />– I am also interested in deeply revealing the biochemical and structural basis of this novel modification in fungal FAS.<br /><br /><br />Link to the scientific article: <a href="http://www.nature.com/nchembio/journal/vaop/ncurrent/full/nchembio.2301.html">Expanding the product portfolio of fungal type I fatty acid synthases</a> <br /><br />Text: Mia Malmstedt<br />In the photo: Zhiwei Zhu, Jens Nielsen and Biopetrolia CEO Anastasia Krivoruchko. Photo taken by Martina Butorac.<br />Tue, 28 Feb 2017 14:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Chalmers-China-to-solve-big-challenges.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Chalmers-China-to-solve-big-challenges.aspxChalmers + China to solve big challenges<p><b>​Three research projects from the BIO-department got grants from VR to collaborate with China. The result will be a better understanding of how life is created, research on effective use of biomass and a possible substitute for the old antibiotics.</b></p>​The Department of Biology and Biological Engineering got three of VR’s grants for collaboration with China. This means that BIO got three out of six grants given to projects within the field of biotechnology, and Chalmers got four grants out of 12 awarded in total.<br /><br />Professor Jens Nielsen, Professor Pernilla Wittung-Stafshede and Associate Professor Dina Petranovic are the awardees at BIO.<br />– We have top level research at our department. And more important, we are open minded in working with good research groups wherever they are in the world. We want to collaborate to advance science for the benefit of the Swedish society, says Jens Nielsen.<br /><br />Jens Nielsen will work with a world leading group in Shanghai to identify novel natural products that can be used as antibiotics and anti-cancer drugs.<br />– It is one of the strongest research groups on microbial production and they want to interact with us to learn to use our systems biology tools, Jens Nielsen explains.<br />– They have a large collection of microorganisms that might possibly be used to produce bioactive drugs, such as antibiotics. These microorganisms have been genome-sequenced and we will perform data-mining using our research tools.<br /><br /><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/Bio/ChemBio/pws_180.jpg" alt="" style="margin:5px" />In Pernilla Wittung-Stafshede’s project, the researchers will take a closer look at DNA and proteins made of building blocks that are mirror images of nature’s own building blocks. DNA normally consists of nucleic acids of a certain shape, so called D-form, while proteins consists of amino acids with another shape, the so called L-form. D-form and L-form could be compared with a left and a right hand, mirroring each other. The research group now wants to create molecules with L-form nucleic acids and D-form amino acids.<br />– Then we want to find out how they work. Are they simply mirror images or do they get new traits? We will make the molecules in China, and then test them at Chalmers, Pernilla Wittung-Stafshede says.<br /><br />Understanding how these molecules work will give a deeper understanding about how life is created, and could in the long run also give clues on how to design new pharmaceuticals.<br /><br />Dina Petranovic’s project is about creating yeast strains that can produce cellulosomes which are multi-enzymatic structures. This means packing up several different enzymes that play different roles in degradation of biomass.<br />– If we aim to create a sustainable society that depends on renewables, instead of petroleum derivatives, we need efficient ways to use biomass. One way of using the biomass is to feed the catalysts that produce components such as chemicals – for fuels, medicines and polymers – and these catalysts use the sugars in the biomass, she explains.<br /><br />For Dina Petranovic, it doesn’t really matter where her collaborators reside:<br />– We think about people and what they do. Who is nice, smart and kind, and with whom would I like to work? Who does research that is interesting, complementary to mine, and with overlapping interests? It’s really not important where these people are.<br /><br />Text: Mia Malmstedt<br />Photo of Jens Nielsen and Dina Petranovic: Martina Butorac<br />Photo of Pernilla Wittung-Stafshede: Elin Berge<br />Tue, 21 Feb 2017 11:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/75-million-SEK-for-research-on-new-pharmaceuticals.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/75-million-SEK-for-research-on-new-pharmaceuticals.aspx75 million SEK for research on new pharmaceuticals<p><b>​Chalmers receives 75 million SEK to encapsulate biological pharmaceuticals in nano carriers – research that aims to find new ways of treating severe diseases. Elin Esbjörner from the Department of Biology and Biological Engineering is part of the project.</b></p>​The news was released last week: The Swedish Foundation for Strategic Research, SSF, invests a minimum of 75 million SEK in an industrial research center led by Physics professor Fredrik Höök. The new center will study fundamental requirements for pharmaceuticals made from biological molecules like DNA and RNA.<br /><br />– A promising candidate for treating today’s incurable diseases is to reprogram the cells. However, since the reprogramming must take place inside the cell, the pharmaceutical must penetrate the cell membrane. Designing and encapsulating biological molecules so that they are capable of this is very challenging, says Fredrik Höök in a text from the Department of Physics (<a href="/en/departments/physics/news/Pages/75-MSEK-for-developing-target-seeking-biological-pharmaceuticals.aspx">read the text here</a>).<br /><br /><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/Bio/ChemBio/Elin%20EW_200.jpg" alt="" style="margin:5px" />In the project, nano carriers that transport pharmaceuticals into the cell will be fabricated, mimicking naturally occurring processes for communication between cells in the human body. Elin Esbjörner, Associate Professor at the Department of Biology and Biological Engineering, takes part in the project and describes the term nano carrier:<br /><br />– A nano carrier is simply a very small capsule. The RNA-based pharmaceutical needs to be encapsulated, both to be absorbed and to be protected from decomposition outside the cell we want to reach. You could say that we are going to package RNA into small capsules, which will work like Trojan horses to get into the cell.<br /><br />The researchers found inspiration from nature’s own homing nano carriers, so called exosomes. Exosomes are membrane shielded droplets that send information and molecules between cells.<br /><br />– They are secreted and then absorbed by a receiving cell. We think that mimicking exosomes will be a very good idea, Elin Esbjörner says.<br /><br /><strong>What’s your part in this project?</strong><br />– My work is about uptake and trafficking of RNA-based pharmaceuticals within the cell. I will contribute knowledge on quantitative measurements and imaging of cell uptake. One of our goals is to map the mechanisms that RNA-based drugs use to get into the cells. I will also contribute by developing methods to study a process called endosomal escape. This is a necessary step that has to take place after the cell has taken up the RNA, because most of it will be entrapped by intracellular transport carriers – endosomes. During endosomal escape, the RNA finds its way out of the endosomes and into the cytoplasm where it’s therapeutically effective. Today, the endosomal escape is ineffective and this is one of the biggest challenges to RNA-based drugs. We hope to increase effectiveness in this process by understanding exactly how it works.<br /><br /><strong>How will this huge project affect you?</strong><br />– This is a lot of fun. To be given this big and prestigious grant does not only mean a new research project, it also mean that I now get to collaborate with Fredrik Höök and Marcus Wilhelmsson, Professor at the Department of Chemistry and Chemical Engineering, and the other center partners approaching biomolecular questions that we have had for years. It will also bring a big change to my workdays. My research group will grow to almost twice its size and at Chalmers we will work closely with Fredrik and Marcus. I will also continue my present research about protein folding diseases, and it actually fits nicely together with this new project – uptake is important in both. I think my projects will enrich each other. And, to have financing for such a long time means safety and a chance to work undisturbed.<br /><br />Partners in the project are AstraZeneca, Camurus, Vironova, Gothenburg Sensor Devices as well as Karolinska Institute and Gothenburg University.<br /><br />Text: Mia Malmstedt<br />Thu, 16 Feb 2017 16:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Exploring-vaccine-safety.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Exploring-vaccine-safety.aspxExploring vaccine safety<p><b>​When a vaccine is given, there’s always a risk of side-effects since it induces an immune response. The BIO-department is involved in the largest vaccine project ever, with the aim to develop new tools for monitoring vaccine safety.</b></p>​Vaccines are general; the same vaccine is given to everyone. But people are individuals, and some may react to the vaccine with unwanted side-effects.<br /><br />With new cutting-edge tools it might be possible to predict side-effects before they actually occur, thus giving the chance of rapid treatment. The technique could also, further down the line, give clues to make vaccine side-effects more rare and vaccines safer.<br /><br />Researchers from Chalmers Department of Biology and Biological Engineering is working together with a total of 18 partners from different academic disciplines in the EU-project BioVacSafe (Biomarkers for enhanced vaccines immunosafety). Among the partners are Imperial College London, Max Planck Institute and Gothenburg University as well as world leading pharmaceutical companies.<br /><br />The overall goal is to develop tools to speed up and improve the monitoring systems of vaccine safety, both before and after release to the market.<br />– We want to monitor patients to find side-effects before the patients have noticed them themselves, says Sakda Khoomrung, project leader at the division of Systems and Synthetic Biology.<br />– The project started in 2012 and has gone very well. There’s potential to continue as we see good results of our work.<br /><br />The Systems Biology-researchers, headed by Professor Jens Nielsen, is contributing to the BioVacSafe-project as responsible for two parts. One is to design and implement a web-based platform that will integrate different types of data, such as transcriptomics, metabolomics and clinical data. Sakda Khoomrung is working with the other part; to analyze metabolic response to the vaccines.<br /><br />Serum samples have been collected from 60 patients in total. A third, 20 patients, was given the influenza vaccine Fluad, 20 was given the Yellow fever vaccine Stamaril, and 20 was given placebo. The researchers analyzed blood taken from each patient on three occasions before the vaccine (or placebo) was administrated, and a total of eight times afterwards.<br /><br />The patients stayed in the hospital for a full week during the study, giving the researchers complete control over their food intake and activities. This is important since metabolomics shows the body’s response to both food and other habits, such as exercise, smoking or drinking. The group was then monitored for three additional weeks after going home.<br /><img width="240" height="300" src="/SiteCollectionImages/Institutioner/Bio/SysBio/sakda_240.jpg" class="chalmersPosition-FloatLeft" alt="" style="height:192px;width:150px;margin:5px" />– In our preliminary results, we found that there is a metabolic response to an individual vaccine, and that this changes over time, Sakda Khoomrung says.<br />– Primary metabolites such as lipids and amino acids – metabolites that are involved in your basic life functions and change when you move, exercise or get sick – are particularly sensitive to changes that occur during immune responses. These metabolites could potentially be used as metabolite biomarkers, helping to improve our understanding of vaccine safety, or identifying the metabolic responses to indicate side-effects. I personally believe this is an important piece of information that will greatly help for the development of the next generation of human vaccine.<br /><br />The BioVacSafe project has received funding until the end of February 2018. Sakda Khoomrung is confident the research will continue, but maybe in another form.<br />– It could be split up in different projects. We have shown interesting results, worth taking forward.<br /><br />Note: To read more about the BioVacSafe project, please <a href="http://www.biovacsafe.eu/">visit the project’s website</a>.<br /><br />In the top photo, from left: Researchers Intawat Nookaew, Partho Sen, Jens Nielsen and Sakda Khoomrung.<br /><br />Text: Mia Malmstedt<br />Photos: Martina Butorac<br />Mon, 30 Jan 2017 17:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Wittung-Stafshede-new-member-of-KVVS.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Wittung-Stafshede-new-member-of-KVVS.aspxWittung-Stafshede new member of KVVS<p><b>​Pernilla Wittung-Stafshede, Professor at the Department of Biology and Biological Engineering, has been elected as member of the prestigious academy KVVS. &quot;A proof that I’ve done something good,&quot; she comments.</b></p>​KVVS, Kungl. Vetenskaps- och Vitterhets-Samhället, is an interdisciplinary association established in 1778 with the main purpose to promote scientific research and support higher education.<br />The academy’s work includes – among other things – lectures, conferences, publishing, awarding of scholarships and various types of targeted actions. The members should be ready to act as representatives in various foundations, and they also give out prizes and awards. Furthermore, KVVS wants to initiate new areas of science, that are seen as important but has no current place in the universities.<br /><br />Professor Pernilla Wittung-Stafshede is head of the Chemical Biology division at Chalmers, and was recently elected as member of The Royal Swedish Academy of Sciences. Her work on protein folding has attracted much attention (<a href="/en/departments/bio/news/Pages/New-research-paves-the-way-for-future-pharmaceuticals.aspx">read more about her work here</a>). For her, the membership of KVVS is an additional sign of the high quality of her work. <br />– It’s very nice, and provides a proof that you are doing something good, that your scientific expertise is of interest, she says.<br /><br />To become a new member of KVVS, Pernilla Wittung-Stafshede has been nominated for her seat. She now takes her place in one of nine divisions; Class 4, Chemical Sciences. The division already includes two Biology and Biological Engineering’s professors: Ann-Sofie Sandberg and Jens Nielsen.<br />Pernilla Wittung-Stafshede still don’t know exactly what work the position at KVVS will entail.<br />– But I will soon! she says.<br />– For me, as a relatively new citizen of Gothenburg, this is also an excellent way to get to know scientists from other disciplines. I will get an expanded network. You never know what possible collaborations and research successes that might bring.<br /><br />Text: Mia Malmstedt<br />Mon, 16 Jan 2017 15:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Nobel-Week-Dialogue.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Nobel-Week-Dialogue.aspxChalmers Professor at Nobel Week Dialogue<p><b>​This year&#39;s Nobel Week Dialogue – The Future of Food – featured Nobel Prize winners, prominent scientists and politicians. Professor Anne-Marie Hermansson from Chalmers Division of Food and Nutrition Science was invited to discuss sustainability.</b></p>​Nobel Week Dialogue is held each year on the day before the Nobel Prize ceremony. An ambitious program of lectures and panel discussions is organized. This year's theme was The Future of Food, and it attracted an audience of 1500. Chalmers Professor Anne-Marie Hermansson was a panelist to discuss sustainable food production.<br /><img width="350" height="450" class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/Bio/AnnMarieHermansson.jpg" alt="" style="height:356px;width:274px;margin:5px" /><br />– We have many challenges ahead of us. Food production has to be sustainable and innovative. The industry need to find new ways to produce food with less water and energy consumption, and with greater recycling. I would say that the water issue is our biggest challenge in the long perspective, she said.<br />– Climate change will affect us and one challenge is to understand how to use new crops and raw materials to produce foods. Nutritious food also has to be cheap, safe and available. Fluctuations in world market prices for raw materials will have an effect on availability and that will affect the neediest if no action is taken.<br /><br />Sustainability, waste and health aspects of food was on the menu during the day. Six Nobel laureates, professors, entrepreneurs and politicians like Isabella Lövin, Swedish minister for International Development Cooperation, engaged in the discussions.<br />– They really found people who knew the field and moreover were charismatic and got the audience to engage, Anne-Marie Hermansson says.<br />– They also did a great job of putting together interesting combinations, like the musician Patti Smith and Angus Deaton, last year's Nobel laureate in economics. I think the atmosphere was incredibly nice, and the audience was complicit. The organizers said this was their best event so far.<br /><br />Anne-Marie Hermansson was invited after sending in names of other knowledgeable persons in the research field:<br />– I was worried that they would arrange this without inviting any food scientists, so I tried to help. It ended up with them suggesting me. It took a while before I realized they actually wanted me to participate in the panel, she says.<br /><br />To have a well-organized and good arrangement within food and future challenges is important for the field, Anne-Marie Hermansson says. And the event also strenghtened Chalmers:<br />– It’s very good for Chalmers to have a representative at the Nobel Week Dialogue. Last year Lars Börjesson, who was then the Vice President, participated.<br /><br />Next year’s Nobel Week Dialogue will be in Gothenburg on December 9 2017.<br /><br />Note: You can watch <a href="https://www.youtube.com/playlist?list=PLJE9rmV1-0uB6WhQcV6dsz_k_x_nDvlSp">Nobel Week Dialogue on YouTube</a>. The panel discussion with <a href="https://www.youtube.com/watch?v=zodJKJ-MHM8&amp;t=164s&amp;list=PLJE9rmV1-0uB6WhQcV6dsz_k_x_nDvlSp&amp;index=15">Anne-Marie Hermansson can be found here</a>.<br /><br />Text: Mia Malmstedt<br />Photo: Jan-Olof YxellTue, 20 Dec 2016 13:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Research-for-a-green-future-awarded-with-grants.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Research-for-a-green-future-awarded-with-grants.aspxResearch for a green future awarded with grants<p><b>​Two researchers at BIO, Johan Larsbrink and Nikolaos Xafenias, received Formas’ start-up grants for future research leaders. And Johan Larsbrink really got a full house, as he received the corresponding grant from the Swedish Research Council as well.</b></p><p>​Research to take further steps towards a fossil-free society. That is the basis for the applications that awarded Nikolaos Xafenias and Johan Larsbrink – both from the Division of Industrial Biotechnology – grants from Formas, each worth one million SEK per year for three years.<br />– This means I can lead my own research line within the division, Nikolaos Xafenias explains.<br /><br />Xafenias’ project involves converting waste and by-products from bioprocesses, to &quot;green&quot; products. Some background: Biorefineries, in which fuels and other chemicals are produced from biomass instead of crude oil, are a great way of moving production away from using fossil raw materials. But for biorefineries to succeed – and be truly environmentally friendly – we need to exploit the vast amounts of carbon dioxide and other carbonaceous residues that are co-produced.<br /><br />Nikolaos Xafenias wants to develop a technology to recycle this carbon, thus reducing the environmental impact. To do this, microbes that &quot;eat&quot; electricity from electrodes will be used. The microbes will be catalysts for the electrochemical conversions of waste products into alcohols, which are of value to the chemical and energy industries.<br />– This money will, among other things, support collaboration with other groups, Nikolaos Xafenias says.<br />– I have really competent partners: Jie Sun, Associate Professor at Chalmers Department MC2, who is working with graphene, and Professor Ieropoulos at the Bristol Robotics Laboratory, who is working with bioelectrochemical systems.<br /><br />Johan Larsbrink will take a closer look at enzymes for efficient decomposition of biomass. So-called enzymatic hydrolysis – a chemical process in which enzymes cleave the major components of the biomass into small molecules – is the most viable option for the decomposition of forest and agricultural residues for conversion to biofuels. But it’s also one of the most costly steps in today’s processes. Enzymes with several so-called catalytic domains may make the process much more efficient, but they are rare. Johan Larsbrink wants to determine the potential of these existing enzymes, and also develop entirely new ones.<br /><br />But Johan Larsbrink did not only receive money from Formas. He also got a start-up grant from the Swedish Research Council, for 3,2 million SEK over a four year period.<br />– It feels a bit strange, it hasn’t completely sunk in yet. But it’s really great, of course, he says.<br />The Swedish Research Council is investing in his project to develop and make the bioprocess that converts biomass into fuels more efficient. In recent years, much effort has been put into creating consolidated bioprocesses, where one microorganism can simultaneously break down biomass, absorb the energy and also produce valuable substances. Most studies have been done on <em>E. coli</em> bacteria and yeast, but the results have not been good enough. Johan Larsbrink has instead chosen to look at other bacterial species, to create organisms with the perfect properties.<br />– The money from both Formas and the Swedish Research Council will go to two new positions in my group. I already have two post docs, and good international and Swedish research connections that I will continue to work with, Johan Larsbrink says.<br /><br />In order to get the grants, the research projects need to meet certain criteria. They are measured not only by the scientific level – scientific issue, expertise and methodology – but also on the potential use for society.<br />– The fact that we received the grants not only shows that we as researchers are considered qualified, but also that our projects are considered promising and interesting, Nikolaos Xafenias says, and Johan Larsbrink adds:<br />– Our projects are in the bioenergy area. It’s a “hot” field right now, and very important from society’s standpoint. Furthermore, it is also important to show that you have good collaborations. Research is becoming increasingly interdisciplinary – it’s no longer possible to work in your own bubble.<br /><br />Text: Mia Malmstedt<br />Photo: Martina Butorac<br /></p>Tue, 20 Dec 2016 10:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Enzymes-Natures-own-scissors.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Enzymes-Natures-own-scissors.aspxEnzymes: Nature’s own scissors<p><b>​Swedish forests can be used for the production of fuels or sustainable materials. But the structure of wood is recalcitrant and hard to decompose. Jenny Arnling Bååth’s research is on enzymes, that might help make wood more accessable for production of new materials.</b></p>​Forestry materials can be used to make bioethanol, biochemicals, textiles or materials to replace composites and plastics. In other words: Our Swedish forests are a gold mine for the production of sustainable alternatives.<br /><br />But there are some difficulties. One is the recalcitrance of wood – it’s very hard to decompose.<br /><br />Wood consists of three elements: Cellulose, lignin and hemicellulose. The cellulose is the core, while lignin and hemicellulose form a net and a glue that will protect the tree in its natural environment. <br />If the tree is completely decomposed we get simple sugars, which is used for the production of ethanol. But the different parts – the polymers – in wood can also be used for different things, and there is much to gain by cutting different bonds between the different wood polymers. Maybe we want to extract just the lignin, or just the hemicellulose, instead of decomposing it all into a mixture of the smallest building bricks.<br /><br />Jenny Arnling Bååth, a PhD student at the Department of Biology and Biological Engineering, is working with enzymes. Enzymes are nature’s own scissors, and cut bonds to help dissolve wood polymers, as well as making the food’s nutrients available in our stomachs. Jenny Arnling Bååth was recently able to show that a certain enzyme, glucuronoyl esterase, is able to cleave a specific bond in the so called lignin-carbohydrate complex. Her research might therefore pave the way for effective and intact extraction of wood polymers in industrial processes.<br />– We knew that this enzyme can cleave the bonds in model substrates, that is, in simplified chemicals or molecules. This time we grinded wood into a powder, processed it and got lignin and hemicellulose in pure fractions, she says.<br />– Our research is the first to show that this enzyme can actually cut the bonds in real substrate from wood. We have worked on this for a long time. It takes luck and time to succeed.<br /><br />The use of enzymes in industrial production is also environmental friendly. Without these natural scissors the wood will need treatment at high temperatures or with chemicals that are potentially dangerous. Furthermore, the enzymes only preform one task – the reactions will always remain controlled.<br />– We don’t know the impact of enzymes in industrial applications yet. Now we want to focus on gaining further knowledge; we want to know more about their resistance when it comes to things like pH or temperatures, and we also want to characterize them – what they do, how fast, and their similarities in regards to structure and function.<br /><br />The findings of Jenny Arnling Bååth is a result of the collaborations within Wallenberg Wood Science Center (read a separate article about the center here) which means that she has been able to perform analyses at KTH Royal Institute of Technology in Stockholm. She praises the benefits of the center:<br />– We work closely together with scientists from different disciplines. As biochemists, we look at enzymes, while other groups work with the same questions but from different angles. A person specialized in Wood Chemistry and a biochemist is not the same. It’s nice to keep on working together.<br /><br />Read more <a href="/en/departments/bio/news/Pages/Working-together-to-strengthen-science.aspx">about the Wallenberg Wood Science Center here</a>.<br /><br />Text: Mia Malmstedt<br />Photo: Martina Butorac<br />Wed, 30 Nov 2016 16:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Working-together-to-strengthen-science.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Working-together-to-strengthen-science.aspxWorking together to strengthen science<p><b>​Wallenberg Wood Science Center has spent the last eight years connecting researchers at Chalmers and KTH. The collaborations have promoted advanced research on materials from trees. Next step: a national research platform.</b></p><p>​Sweden is immensely rich on forests. But with modern digitalization, pulp is no longer a big seller and the forest industry is in need of new areas to target. At the same time, there’s an increasing need for sustainable solutions and alternatives to oil based products. Intense research is made to find efficient ways of producing materials from wood, thus replacing oil based materials like conventional plastic.<br /><br />Wallenberg Wood Science Center (WWSC) is a joint research center involving Chalmers and KTH. WWSC was started in 2009, with 120 million SEK from Knut and Alice Wallenberg Foundation, which had made a specific call for research on raw materials from Swedish forests.<br /></p> <p><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/Bio/IndBio/Skogen_Lisbeth.jpg" alt="" style="margin:5px" />– All the universities got to apply and in the end there were just two left, Chalmers and KTH. And then the foundation announced they wanted to support a joint research center instead, says Lisbeth Olsson, Professor at the Department of Biology and Biological Engineering and one of the leading forces behind WWSC.<br />– In this way, we got a gathering of scientists that would not have come together otherwise. WWSC is a unique collaboration within our field, and we have created an interdisciplinary research environment.<br /><br />At present, WWSC also gathers researchers from other universities, as well as industry. PhD students from KTH and Chalmers get together twice a year for a week-long research school, where they network and build a community as well as work interdisciplinary.<br />– The PhD students get to know other active scientists and meet different competences. They also get access to research infrastructures at the different facilities involved. Our PhD’s frequently go to Stockholm to do analyzes, Lisbeth Olsson says.<br /><br />Plans for the next step – a new researcher platform that will continue the work of WWCS – was announced earlier this fall. Swedish forest industries and the government are planning to finance the platform, when it is up and running, with 250-300 million SEK each year. The goal is to create a long-term powerful research platform with focus in biobased materials and chemicals from wood, with focus on unique research as well as new competences and education.<br />– The national platform will be open and accessible, an interdisciplinary venue that will gather both academia and industry, Lisbeth Olsson concludes.<br /><br />Read more about the <a href="/sv/nyheter/Sidor/Nyskogsforskningsplattform.aspx">new research platform here </a>(in Swedish only). <br />Read more about the <a href="/en/departments/bio/news/Pages/Enzymes-Natures-own-scissors.aspx">research made in Wallenberg Wood Science Center here</a>.<br />Link to <a href="http://www.nyteknik.se/opinion/framtidens-material-kommer-fran-skogen-6797089">article in Ny teknik </a>(Swedish).  <br /><br />Text: Mia Malmstedt<br />Photo: Anna-Lena Lundqvist<br /></p>Wed, 30 Nov 2016 13:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/New-research-to-protect-plants.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/New-research-to-protect-plants.aspxNew research to protect plants<p><b>​Destruction of food – like rotting fruit or moldy vegetables – is a huge problem worldwide. In order to have enough food for everyone we need to find ways to protect plants. A small but important enzyme may play a key role, according to research.</b></p>​The enzymes called LPMOs (or Lytic polysaccharide monooxygenases) was discovered half a decade ago, and is today commercialized for industrial saccharification of agricultural residues such as straw. As LPMOs are important in the decomposition process, the understanding of their function can lead to more efficient production of bioethanol from cellulose (read more about this <a href="http://www.biochemsoctrans.org/content/44/1/143.abstract">in the journal Biochemical Society Transactions </a>and also <a href="/en/departments/bio/news/Pages/From-Denmark-to-Sweden-for-the-sake-of-bioethanol.aspx">at the Chalmers website</a>.) <br /><br /><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/Bio/IndBio/Katja_220.jpg" alt="" style="height:162px;width:165px;margin:5px" />Katja Salomon Johansen, Associate Professor at Copenhagen University, was until recently a guest researcher in the Chalmers Industrial Biotechnology division, working with Professor Lisbeth Olsson, and is still engaged by the Department of Biology and Biological Engineering. She takes a special interest in LPMOs, and her research was recently published in the journal Trends in Plant Science.<br />– This paper informs plant scientists about the potential impact of these enzymes on food security, she says.<br /><br />All of our food comes from plants, one way or the other. Either we eat the crops ourselves, or they are used as feed for animals that end up on our plates. To ensure enough food for a growing population, in line with the UN sustainability goals, we need efficient and sustainable farming with a minimum amount of food waste. And to get there, we need new ways of protecting the plants from microbes under and above ground.<br />– The plants are always in contact with microbes. Some causes diseases and will reduce the harvest. Other microbes work in a beneficial way for the plants, Katja Salomon Johansen explains.<br />Researchers have now shown that LPMOs are important for the efficiency of interaction between microbes and plants. The enzymes are secreted by a large number of microorganisms to initiate infection and degradation processes.<br />– This means that we might reduce disease if we could deploy an inhibitor against the LPMOs. Perhaps – I’m just speculating – we could find a natural inhibitor to spray over the harvest to protect it.<br />But there is still a long way to go. Katja Salomon Johansen’s review has spawn several new scientific questions.<br />– Plant scientists are a new crowd that are probably not aware of these enzymes at all. I wanted to raise the awareness, she says.<br /><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/Bio/IndBio/Trplsc_21-11%20cover_300.png" alt="" style="margin:5px" /><br />The article in Trends of Plant Science also touches on the impact of LPMOs on the amount of carbon dioxide in the atmosphere.<br />– This article is the outcome of my work at Chalmers, I wrote it all there. And the figure that ended up on the first page was a result of the funding I got from the Västra Götalands Region, so this is all linked to my work in Gothenburg, Katja Salomon Johansen says.<br />– This is one of the top journals in its area. To make the front page made me very happy.<br /><br />Text: Mia Malmstedt<br />Tue, 29 Nov 2016 10:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Making-the-yeast-smarter.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Making-the-yeast-smarter.aspxMaking the yeast smarter<p><b>​Chalmers’ quest for sustainable alternatives to petrochemicals continues. Researchers have now further optimized the yeast cell factory by making the yeast smarter and turning waste into value. This brings us one step closer to green substitutes.</b></p>​The world is in great need of new ways of producing fuels and chemicals. Oleochemicals are substitutes of petrochemicals, usually derived from plant oils and animal fats but with limited availability. Researchers at the Department of Biology and Biological Engineering are instead designing yeast cell factories to produce the oleochemicals we need. But the titers of fatty alcohol and alkanes are low.<br /><br />Following up on previous findings (<a href="/en/departments/bio/news/Pages/Good-results-for-chemical-producing-yeast.aspx">read more about them here</a>), postdoc Yongjin Zhou developed the cell factory further by making yeast smarter. The new findings was recently published in the prestigious Journal of the American Chemical Society.<br />– We found a novel strategy for production of oleochemicals with higher efficiency. This smarter yeast would pave a way toward a more sustainable society, he says.<br /><br />Peroxisome is a part of the cell that play a prominent role in taking care of “waste” molecules, which could be toxic or nontoxic. The researchers have now reversed the process, making the peroxisome help produce fatty-acid-derived chemicals instead.<br />– We have harnessed the yeast organelle peroxisome to improve the production of alkanes, fatty alcohols and olefins, Yongjin Zhou explains.<br />– This “turn waste to value” concept would make the process more efficient and economical. The findings and strategy could be easily applied to establish efficient cell factories for production of other chemicals of high value, and also biofuels and pharmaceuticals.<br /><br />The industry is expressing interest in the cell factories, and Yongjin Zhou’s work clearly shows the high potential of yeast for production of the chemicals we need, in an alternative and sustainable way.<br />So what is the next step?<br />– We are continuing to improve the productivity of these olechemicals in yeast, trying to further decrease the costs and making it competitive to current processes. I will finish my contract in Chalmers in the end of this year, but my colleagues are following up the project to further optimize the metabolic pathways for enhancing the production of fatty acids and alkanes, Yongjin Zhou says.<br />– I will go back to China and establish my research group in Chinese Academy of Sciences. There I will focus on establishing bioprocesses to produce bioactive natural products, that can be used as pharma- and nutraceuticals. <br /><br />Text: Mia Malmstedt<br />Photo: Martina ButoracThu, 24 Nov 2016 14:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Fighting-antibiotic-resistance-with-smartphones.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Fighting-antibiotic-resistance-with-smartphones.aspxFighting antibiotic resistance with smartphones<p><b>​Antibiotic resistance is spreading rapidly throughout the globe. Using smartphones to diagnose resistance would make it possible to fight the problem more effectively. Chalmers just received a Grand Challenges Explorations grant to explore this further.</b></p>​On November 15, the Bill &amp; Melinda Gates Foundation announced the winners of Round 17 of Grand Challenges Exploration, which gives grants for groundbreaking research in global health and development. One of the winners is Chalmers. Associate Professor Fredrik Westerlund from the Department of Biology and Biological Engineering will lead the project.<br /><br />– We have for several years been developing techniques to study the DNA molecules – so called plasmids – that are a main cause for the rapid spread of resistance to antibiotics. Our methods are expensive but give us a lot of useful information. Now we want to take this a step further by developing cheaper techniques, he says.<br /><br />In 2014, the American Professor Aydogan Ozcan at UCLA introduced a lightweight and cost-effective fluorescence microscope installed on a smartphone. The camera on the smartphone could actually produce pictures of single DNA molecules, with high enough quality to measure their size. What if this technique could evolve further, to produce high-quality images that could be used for diagnostics and epidemiological tracing of antibiotic resistance?<br /><br />– We applied for the grant to test if we can perform our research on plasmids using smartphones. We are now working together with Professor Ozcan, and we are also collaborating with a physician specialized in infectious diseases, and a PhD student in Ethiopia. Antibiotic resistance is a global issue, and we need a large team to work with all the different aspects, Fredrik Westerlund explains.<br />– The whole idea of this is to democratize science; the dream would be if people in developing countries could use this simple and cheap technique in their own environment.<br /><br />With the 100 000 dollar grant from the Gates Foundation, the group has 18 month to develop the idea further and may then – if successful – receive a follow-up grant of up to one million USD.<br /><br />– We want to continue, to take this further; from developing the microscopy to the software needed for analysis. In the long run, I would like to see a smartphone app for this. Just imagine the possibilities of working globally when you can store information from mobile phones in clouds, Fredrik Westerlund says, and continues:<br />– What does it take to set up a modern research lab in the jungle? How far can we take this method? We want to explore smart ways to make research and diagnosis more accessible.<br /><br />Text: Mia Malmstedt<br />Photo: Karin Weijdegård<br />Fri, 18 Nov 2016 15:00:00 +0100http://www.chalmers.se/en/areas-of-advance/lifescience/news/Pages/Susan-Lindquist.aspxhttp://www.chalmers.se/en/areas-of-advance/lifescience/news/Pages/Susan-Lindquist.aspxHonorary Doctor Susan Lindquist dead at age 67<p><b>​Susan Lindquist, Chalmers Honorary Doctor of Engineering 2016, passed away on Thursday. Her work on protein folding was truly groundbreaking, and she is today missed by friends and colleagues around the world.</b></p><p>​Susan Lindquist was a professor at MIT and a group leader, and former director, at Whitehead Institute. She studied how changes in protein structures affect the development of new biological properties, neurodegenerative diseases, cancer and infections. She also transformed budding yeast into a model organism for studying human disease, evolution, and biomaterials.<br /><br />For this groundbreaking research she was appointed an honorary doctorate earlier this year. Her nearly 40-year career was defined by intellectually courageous, boundary-defying research and a passion for nurturing new generations of scientific talent, Whitehead Institute writes in an obituary.<br /><br />In Chalmers, one of Susan Lindquist’s main collaborators was Dina Petranovic, Associate Professor at the Department of Biology and Biotechnical Engineering and CEO of the organization Molecular Frontiers. Susan Lindquist was a member of the Molecular Frontiers board for many years, and took active participation. The both of them also became personal friends.<br /><br />– I read Sue’s papers when I was an undergraduate student, back in the late 1990’s, and approached her in 2009 during a visit in Boston. I wrote a simple email saying that I love and admire her work, that I just started working on yeast and would love to meet her if she had the time. She replied and invited me to visit her lab. It was amazing. She was busy with travels, projects in her lab, teaching classes at MIT, but she found time to meet me even though I had zero credentials and have done nothing yet in that field, Dina Petranovic says.<br />– I was so impressed to see how kind, open and interested she was in my ideas. In 2012, I went for a short sabbatical to her lab, and it was honestly the best time of my career – to be there and see all these amazing projects she and her group were working on was really impressive and inspiring. After I come back, we kept touch by email almost every month, and met at conferences. During her illness this year we often kept contact. Her emails were so positive and full of energy.<br /><br />Susan Lindquist’s work with yeast proteins generated a multitude of insights. In a series of experiments described in a paper in 2006, she and her team introduced a Parkinson’s gene into a yeast cell and, after testing 5000 genes, isolated one gene with a protein that saved the yeast cell. Later experiments with other labs were successful in saving the neurons of fruit flies and rats. Together the studies opened a promising line of research for an eventual cure for Parkinson’s.<br />– I do a lot of what you would call high-risk, high-payoff research, Dr. Lindquist told an audience at Angelo State University in Texas in 2002 according to the New York Times.<br />– Some of my projects don’t work, but when they do work, they are pretty fabulous.<br /><br />She was a fearless scientist who wanted to pursue the truth – even if it sounded weird, was unpopular or in uncharted territory, Dina Petranovic says. And to go into different systems, like she did, is very rare:<br />– If it works like this in yeast, does it also work in worms, in flies, in mice, in human cells, in clinical patients? It is hard and complicated to cover so many model systems, but Sue would always take the extra mile in her pursuits. That is also one of the reasons she was so respected in science and received many awards and honors for her outstanding work, such as the National Medal for Science from President Obama, and was elected into several academies including Foreign Member of the Royal Society in United Kingdom.<br /><br />Susan Lindquist last came to Chalmers in 2015, to participate in the Amazing Week symposium. As she was appointed an Honorary Doctor, she was supposed to return this year in May to receive the doctorate. But she was already ill and in treatment, and the trip was postponed.<br /><br />– There are a number of excellent scientists in the world, but Sue was also wonderful as a person. She was always keen to do whatever she could to support women who want a career and education in science. Not only by encouraging, but also by bringing up these important topics about injustice and glass-ceiling in high places. In daily practice, she was a supportive colleague who would selflessly open her lab and her mind to her younger colleagues, including me, sharing freely materials, data, advice, comments, insights and being proud when we did well, Dina Petranovic says.<br />– We knew it was a very tough battle, but she was so strong and positive that we could not believe cancer would win, at least not so soon. We lost not only a fantastic scientist but a very dear friend. Her work, ideas and human values will always live in our minds and hearts. Her husband and their two daughters are wonderful people and I am truly sad for their loss. Sue will be missed so much, by so many people.<br /><br /><strong>Note</strong>: Gifts in honor and memory of Susan Lindquist may be made to the Whitehead Institute Fund to Encourage Women in Science (<a href="mailto:lindquistfund@wi.mit.edu">lindquistfund@wi.mit.edu</a>).<br /><br />Text: Mia Malmstedt<br />Photo: Per Thorén</p>Mon, 31 Oct 2016 16:00:00 +0100http://www.chalmers.se/en/departments/bio/news/Pages/Fish-intake-may-protect-children-from-allergies.aspxhttp://www.chalmers.se/en/departments/bio/news/Pages/Fish-intake-may-protect-children-from-allergies.aspxFish intake may protect children from allergies<p><b>​Eating oily fish while pregnant or breastfeeding may protect your child from allergies. Likewise, kids who eat fish, eggs and flour early in life have less allergies, according to new findings from the division of Food and Nutrition Science at Chalmers.</b></p>​Children raised on farms are very seldom allergic. With this in mind, the Farmflora Birth cohort was established to find the reasons behind the fact.<br /><br /><img src="/SiteCollectionImages/Institutioner/Bio/Food/KarinJonsson300.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px" />Karin Jonsson, who is now presenting her doctoral thesis, used the Farmflora Birth cohort to take a closer look at dietary factors that might explain why the farm-raised children do not develop allergies. But the strongest connection she found had nothing to do with farms.<br /><br />– At birth, and again at four months of age, the healthy children had higher proportions of the omega-3 fatty acid eicosapentaenoic acid, EPA, in their blood. The levels corresponded with the mother’s intake of fatty fish; the mothers of children with high proportions of omega-3 in the blood had been eating a lot of fish during pregnancy and lactations, and we could also see evidence of this in their breastmilk, she explains.<br /><br />The children’s intake of seafood at one year of age was also associated with lower frequency of allergy, but the connection was weaker.<br /><br />– This is a small observational study. We need bigger studies – and clinical ones – to be more certain. But my results are in line with other studies involving fish. Fish intake in the family seems to reduce the risk of allergies, Karin Jonsson says.<br /><br />The research also indicates that children introduced to fish and eggs before 11 months of age had a lower risk of developing allergies. Also, it seems beneficial to introduce flour as early as possible, although none of the children had flour before the age of four months. This is especially interesting with regard to the dietary recommendations for infants, which has been changed several times.<br /><br />– The Swedish National Food Agency recommends full breastfeeding until the child is six months. But we see that there might be reasons to introduce foods earlier, and full breast feeding seems to protect the child only in the three first months. More and more studies are now done and new recommendations is likely to come, Karin Jonsson says.<br />– Old recommendations about waiting to introduce foods even longer than six months are still given by some Child health centers. I would like to see consensus in the recommendations, as it seems to be negative to wait for too long.<br /><br />The results showing that healthy kids had higher levels of omega-3 in their blood surprised Karin Jonsson, as fish eating is not directly linked to living on a farm. She thought that she would have been much more likely to find evidence connecting allergy and dairy products, but could only show week links:<br /><br />– Mothers at farms consumed more fatty dairy products and saturated fats during pregnancy and lactation, and so did their children by the age of one year, in comparison to the other mothers and children who ate more margarine. We were able to show a week link between lower intake of margarine and lower risk of allergies, but this needs to be studied further. I would like to do clinical studies on the impact of butter and margarine, Karin Jonsson concludes.<br /><br /><strong>FACTS</strong>: Farmflora Birth cohort<br />The Farmflora Birth Cohort was started by professors Agnes Wold, Sahlgrenska Academy at the University of Gothenburg, and Ann-Sofie Sandberg, Chalmers University of Technology. The study is designed to find factors that contribute to allergy protection in the farming environment, since it is previously known that children raised on farms are very seldom allergic.<br />A total of 65 children were selected; 28 of them from dairy farms in Västra Götaland, Sweden, and 37 from the same countryside but not living on farms. The children were clinically examined by a pediatrician to establish any food allergies, asthma, eczemas or hay fever. Of the children living on farms, only one was allergic at the age of three years (4 percent). In the control group, 10 out of 37 children (27 percent) had developed allergies at the same age.<br /><br /><br />Text: Mia Malmstedt<br />Photos: Martina Butorac and Anna-Lena Lundqvist (photo with fish)Fri, 28 Oct 2016 10:00:00 +0200