Innovation is crucial to fulfil the potential of industrial biotechnology for sustainable production of fuels, chemicals, materials, food and feed. Similarly, scientific and technological advances in environmental biotechnology are needed to enable novel approaches to water purification, and ‘waste-to-product’ processes thus contributing to a circular economy. Increased fundamental knowledge encompassing enzymes, microorganisms and processes are essential for progress in this field. The Department of Biotechnology covers this research area and, based on new insights, selects, designs and tests new biobased catalysts, micro-organisms, and processes.
The department encompasses five research sections:
01 December 2020
Best Bioengineering MSc Graduate 2020: Nemo Andrea!“An outstandingly talented biophysicist who seamlessly combines deep biological knowledge with a strong ability for physical abstraction and numerical analysis.” This is how supervisors Marileen Dogterom and Arjen Jakobi (Applied Sciences, Bionanoscience) describe MSc Applied Physics graduate Nemo Andrea. With his thesis “Actin-Microtubule crosstalk studied by cryo electron microscopy” (graded 9.5), Nemo has won Delft Bioengineering Institute’s BEI MSc Graduate Award 2020, comprising of a €1000 personal cash prize. Runners up are MSc Nanobiology graduate Christos Gogou (second prize, €500) and MSc Life Science and Technology graduate Allison Wolder (third prize, €250). Cytoskeleton ‘Actin-microtubule crosstalk’ refers to the functional interactions that exist between these two cytoskeletal systems in living cells. An increasing number of molecular crosslinkers responsible for these interactions are being identified, but detailed mechanistic knowledge on how they connect cytoskeletal filaments is missing. Such knowledge is of great importance for efforts that aim to engineer artificial cells with active cytoskeletal networks from the bottom up. Cryo-EM Taking advantage of recent advances in cryo-electron microscopy, Nemo set out to visualize the architecture of microtubule-actin filament interactions in the presence of an engineered crosslinker. These high-resolution images give valuable insight into how these two filaments affect each other’s dynamic properties, something that was phenotypically observed before with fluorescence microscopy, but not understood at the structural level. In addition, Nemo explored new artificial intelligence methods to reduce the noise level of his cryo-EM images, and independently adapted the algorithm to improve its performance. While the data are too preliminary in terms of statistics to be immediately publishable, the results obtained are completely novel and important for future research in this field. Runners-up Excellent Master thesis work was done as well by runners-up Christos Gogou and Allison Wolder. A short description of their research can be found below. Overall, Delft Bioengineering Institute was impressed by the quality of the ten reports that were submitted, and had a very hard time making a selection. We want to thank all students for their outstanding efforts, and their supervisors for composing their nominations. We hope 2021 will see the start of a second five-year term for the institute, so we can continue to stimulate promising research in the field of bioengineering. BEI Best MSc Graduate Awards 2020 Nemo Andrea – “Actin-Microtubule crosstalk studied by cryo electron microscopy” Supervisors: Marileen Dogterom and Arjen Jakobi (Applied Sciences, Bionanoscience) Taking advantage of recent advances in cryo-electron microscopy, Nemo set out to visualize the architecture of microtubule-actin filament interactions in the presence of an engineered crosslinker. In addition, Nemo explored new artificial intelligence methods to reduce the noise level of his cryo-EM images, and independently adapted the algorithm to improve its performance. Christos Gogou – “Constructing a cryo-EM assay for molecular voltage-sensitivity of liposome-reconstituted membrane proteins” Supervisor: Dimphna Meijer (Applied Sciences, Bionanoscience) Christos bioengineered a novel assay to test if neuronal proteins are sensitive to voltage fluctuations. More specifically, he designed lipid-based vesicles that can be tuned to any membrane potential of choice. Neuronal membrane proteins can then be inserted in these vesicles and visualized at high resolution by cryo-electron microscopy. This assay mimics the action potential of neurons in vitro. Allison Wolder – “Scaling up ene reductase-catalysed selective asymmetric hydrogenation” Supervisor: Caroline Paul (Applied Sciences, Biotechnology) Allison worked on scaling up an incredible enzymatic reaction: hydrogenation. This is notoriously difficult to do, and it requires exploration of the mechanism of the enzyme and its stability. She carried out her thesis in the front seat, thinking outside of the box, suggesting new approaches, making new connections with external companies. The presentation and report were of excellent quality. If you would like to read a thesis, please send a message to N.vanBemmel@tudelft.nl and you will receive a copy.
11 November 2020
TU Delft and NRL host the “Workshop on Sustainable Aviation Fuels for Aircraft Propulsion”On October 15th, 2020 - the Delft University of Technology (TU Delft) in collaboration with the Netherlands Aerospace Center (NRL) hosted the “Workshop on Sustainable Aviation Fuels (SAF) for Aircraft Propulsion”. During the workshop, experts from the aviation and technology sectors, as well as representatives from NGO’s and research institutes gathered to share their vision and expectations about SAF production and availability for the aviation sector in the 2050-time horizon.
10 September 2020
50.000 euro NWO grant for four researchers of Applied SciencesThe Board of NWO Domain Science has awarded four researchers of Applied Sciences in the NWO Open Competition Domain Science – XS. Xiaozhou Ma, Dimphna Meijer, Caroline Paul and Toeno van der Sall will all receive 50.000 euros for their various projects.
25 November 2019
Mark van Loosdrecht elected as member of the Chinese Academy of EngineeringThe Chinese Academy of Engineering (CEA) has announced that it has elected Mark van Loosdrecht, Professor of Environmental Biotechnology, as a member.
11 September 2019
Cable bacteria: Living electrical wires with record conductivityBacteria that power themselves using electricity and are able to send electrical currents over long distances through highly conductive power lines. It almost sounds like the way we charge our TVs and refrigerators, and may seem hard to believe, but it is a recent discovery by a team of scientists from the University of Antwerp (Belgium), Delft University of Technology (Netherlands) and the University of Hasselt (Belgium). Centimeter-long bacteria from the seafloor contain a conductive fiber network that operates in comparable way to the copper wiring that we use to transport electricity. The highly conductive fibers enable a completely new interface between biology and electronics, providing a prospect for new materials and technology.
18 July 2019