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Chalmers and Biopetrolia researchers successfully engineered yeast cells for production of Docosanol with increased efficiency and selectivity, as reported by the paper in Nature Communications. Docosanol is a very long chain fatty alcohol mostly used as an emollient, emulsifier, and thickener in cosmetics. It is also commercialized as an FDA-approved antiviral agent for treatment of herpes simplex virus symptoms.
For producing docosanol, yeast cells were first engineered to produce very long chain fatty acids, which are present in only very low levels in the native cells. Subsequent engineering led to the conversion of said fatty acids into their fatty alcohol form in a very specific way free of contaminants from similar molecules.
Anastasia Krivoruchko was listed among 6 young researchers making names for themselves in the biotech industry by LABIOTECH.eu. This article features young (under 35) biotech researchers who are mostly active in entrepreneurship while still achieving surprising milestones in the academic environment.
Research by Biopetrolia and Chalmers researchers has recently been featured as the cover story in Natural Chemical Biology. The research involves modification of Fatty Acid Synthase, an enzyme that normally synthesizes long chain fatty acids. In this work the enzyme was re-engineered to produce short and medium fatty acids and methyl ketones, important compounds in the chemicals and fragrance industries. When combined with further manipulation of the yeast metabolism, a record level of short and medium chain fatty acids was achieved.
Biopetrolia is involved in an EU “Horizon 2020” project as part of an international consortium. Horizon 2020 is so far the biggest EU Research and Innovation programme ever and it aims to bring breakthroughs and innovative ideas from the lab to the market. The project CHASSY: “Model-Based Construction And Optimisation Of Versatile Chassis Yeast Strains For Production Of Valuable Lipid And Aromatic Compounds” aims to create robust yeast cell factories for different industrial products. The CHASSY consortium consists of several academic and industrial partners spread over a multitude of european countries.
A recent work by Biopetrolia-affiliated researchers was published in Biotechnology & Bioengineering. The publication describes engineering of yeast for the production of long-chain wax esters.
Long-chain wax esters are the main constituents of jojoba oil and are responsible for most of its properties. Furthermore, wax esters of different formulations are commonly used as cosmetic ingredients and biolubricants. The work is the first demonstration of the synthesis of very long-chain wax esters using yeast.
Biopetrolia has undergone a restructuring in its management, with Anastasia Krivoruchko taking the role of CEO and Florian David and Jens Nielsen the roles of COO and CSO, respectively. In addition, Henrik Dalbøge and Jan Svärd have joined as members of the Board of Directors. Henrik and Jan bring with them significant executive and business development experience in the biotech and specialty chemicals sectors.
Jens Nielsen, Florian David and Anastasia Krivoruchko have been interviewed by Chalmers about Biopetrolia. Chalmers and Biopetrolia share a symbiotic relationship where the research from SysBio (Systems and Synthetic Biology division from Chalmer’s Biology and Biological Engineering department) is converted into a reality brought to the public and applied in industry, allowing the growth of Biopetrolia as a sustainable and high-end solution. On the other hand, such a close relationship drives the institutional researchers at Chalmers into tackling solutions to real problems derived from society’s needs, increasing the impact and relevance of their research.
Biopetrolia – affiliated researchers have published a paper in Nature Communications on engineering yeast for high-level production of fatty acids and derived products. The engineered strains are so far the highest producer microorganism for fatty acids, reaching levels of up to 10.4 g/L. Using the same strategy, the authors were able to further engineer these cells to directly produce alkanes (molecular components of gasoline and diesel) and fatty alcohols valuable as formulation ingredients for personal care products.
The paper shows application of some of Biopetrolia’s patented principles on engineering yeast metabolism for efficient production of sustainable chemicals and brings the technology one step closer to a competitive leadership in industry.
Jens Nielsen was selected to receive the prestigious Novozymes Prize for his pioneering work on systems biology and metabolic engineering of microbial cell factories. The Prize is awarded in recognition of outstanding research or technology efforts that benefit the development of biotechnology and enables a total of 2.5 million DKK to be employed towards the development of promising new research projects.
“Receiving the Novozymes Prize is a really fantastic honour. I have always especially focused on understanding and modifying metabolism so that industry can apply this knowledge. Having unrestricted funds for riskier projects that can enable the new knowledge that is necessary to improve the technology is an enormous boost,” says Jens Nielsen.
Jens Nielsen explains further the applications of his research in this latest video by Novo Nordisk Foundation
Biopetrolia researchers have published a paper in ACS Synthetic Biology on the development and utilization of new yeast biosensor for simultaneously sensing and controlling yeast metabolism. The aim of this study was to demonstrate one case where yeast cells can use biosensors to control and improve production of a given chemical.
In this paper, the researchers engineered yeast cells to implement a genetic circuit capable of sensing one internal molecule and convert it into a precursor for plastic polymers. More specifically, the levels of the precursor metabolite malonyl-CoA are sensed in the cell by the genetic circuit, which activates production of enzymes that will then convert it to the final product 3-hydroxypropionic acid. The use of this system allows precise control of the metabolic pathway and increased production by 10-fold.
The paper displays some of the technology developed so far at Chalmers and Biopetrolia and exemplifies how it can be used in different combinations for varied applications.
In a recent publication, Chalmers and Biopetrolia-affiliated researchers demonstrate for the first time the production of gasoline and diesel constituents using the yeast Saccharomyces cerevisiae.
Until now, production of biofuels in yeast was limited to low energy molecules, such as ethanol. These are only compatible with modern transportation fuels in a low percentage. Higher energy molecules, such as alkanes (the main constituent of modern fuels such as diesel and gasoline) are therefore important to produce in a sustainable way. In this publication, researchers show it is possible to produce these same alkanes from sugar in a renewable way. This discovery opens up a possible reality where a renewable biofuel produced using yeast cells is totally compatible with modern transportation fuels.
The baker’s yeast (Saccharomyces cerevisiae) is today regarded as one of the most promising organisms to be used for the fermentation-based production of sustainable fuels and chemicals. In a recent review paper, Dr. Yongjin Zhou and colleagues explore the most recent scientific developments on the production of fatty acid-derived biofuels and chemicals in Saccharomyces cerevisiae.
Biopetrolia has recently been awarded a pre-Seed grant from Novo Seeds, an innovation investment interface from Novo, a company fully owned by the Novo Nordisk Foundation dedicated to investments on innovation, development and establishment on the biotech industry. The grant was awarded towards development of Biopetrolia’s fatty-acid overproducing platform strains and expansion of its scope towards production of value-added oleochemicals.
Biopetrolia was founded as of February 2014 as a patent-holding company from Jens Nielsen’s research group. This held intellectual property represents a rich portfolio of technology that has been generated by innovative research through many years on the field of metabolic engineering and synthetic biology of yeast cell factories.
Today, Biopetrolia proposes to create an evolving environment for the development of new yeast microbial factories that can bring real solutions to the industry of biofuels and fatty-acid derived chemicals.
Read the article by Innovations-kontor Väst [in Swedish]