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AUNAB - Aarhus University Network on Artificial Biology

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Recent research news on Artificial Biology

Distinct Network Morphologies from In Situ Polymerization of Microtubules in Giant Polymer-Lipid Hybrid Vesicles

Creating artificial cells with a dynamic cytoskeleton, akin to those in living cells, is a major goal in bottom-up synthetic biology. In this study, we demonstrate the in situ polymerization of microtubules encapsulated in giant polymer-lipid hybrid vesicles (GHVs) composed of 1,2-dioleoyl-sn-glycero-3-phosphocholine and an amphiphilic block copolymer. The block copolymer is comprised of poly(cholesteryl methacrylate-co-butyl methacrylate) as the hydrophobic block and either poly(6-O-methacryloyl-D-galactopyranose) or poly(carboxyethyl acrylate) as the hydrophilic extension. Depending on the concentrations of guanosine triphosphate (GTP) or its slowly hydrolyzable analog, guanosine-5′-[(α,β)-methyleno]triphosphate (GMPCPP), different microtubule morphologies are observed, including encapsulated microtubule networks, spike protrusions, as well as membrane-associated or aggregated microtubules. Overall, this work represents a step forward in mimicking the cellular cytoskeletons and uncovering the influence of membrane composition on microtubule morphologies.

Recent publications by network

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Kim, B. B., Wu, H., Hao, Y. A., Pan, M., Chavarha, M., Zhao, Y., Westberg, M., St-Pierre, F., Wu, J. C. & Lin, M. Z. (2022). A red fluorescent protein with improved monomericity enables ratiometric voltage imaging with ASAP3. Scientific Reports, 12(1), Article 3678. https://doi.org/10.1038/s41598-022-07313-1

Laursen, R. & Hobolth, A. (2022). A Sampling Algorithm to Compute the Set of Feasible Solutions for NonNegative Matrix Factorization with an Arbitrary Rank. SIAM Journal on Matrix Analysis and Applications, 43(1), 257-273. https://doi.org/10.1137/20M1378971

Kjærgaard, M., Rasmussen, L. S., Vinther, J. N., Andersen, K. R., Andersen, E. S., Lorentzen, E., Thirup, S. S., Otzen, D. & Brodersen, D. E. (2022). A Semester-Long Learning Path Teaching Computational Skills via Molecular Graphics in PyMOL. The Biophysicist, 3(2), 106–114. https://doi.org/10.35459/tbp.2022.000219

Staulund, J., Song, P., Qi, H., Thrane, L., Duedahl, P., Weiss, T., Moers, C., Keller, A. K., Nørregaard, R., Pedersen, M., Leuvenink, H., Kjems, J., Jespersen, B. & Eijken, M. (2022). Assessing the quality of donor kidneys during normothermic machine perfusion using nanoparticle-based vitality sensors. Abstract from 3rd ECTORS meeting, Rotterdam, Netherlands.

Dieudonné, T., Herrera, S. A., Laursen, M. J., Lejeune, M., Stock, C., Slimani, K., Jaxel, C., Lyons, J. A., Montigny, C., Pomorski, T. G., Nissen, P. & Lenoir, G. (2022). Autoinhibition and regulation by phosphoinositides of ATP8B1, a human lipid flippase associated with intrahepatic cholestatic disorders. eLife, 11, Article e75272. https://doi.org/10.7554/eLife.75272

Ebbesen, M. (2022). Beneficence. In B. Frey (Ed.), The SAGE Encyclopedia of Research Design Sage Publications, Inc. Sage Publications Ltd..

Nielsen, A. F., Bindereif, A., Bozzoni, I., Hanan, M., Hansen, T. B., Irimia, M., Kadener, S., Kristensen, L. S., Legnini, I., Morlando, M., Olesen, M. T. J., Pasterkamp, R. J., Preibisch, S., Rajewsky, N., Sünkel, C. & Kjems, J. (2022). Best practice standards for circular RNA research. Nature Methods, 19(10), 1208-1220. https://doi.org/10.1038/s41592-022-01487-2

Catapano, C., Rahm, J. V., Omer, M., Teodori, L., Kjems, J., Dietz, M. S. & Heilemann, M. (2022). Biased activation of the receptor tyrosine kinase HER2. bioRxiv. https://doi.org/10.1101/2022.12.04.519064

Christensen, N. R., Pedersen, C. P., Sereikaite, V., Pedersen, J. N., Vistrup-Parry, M., Sørensen, A. T., Otzen, D., Teilum, K., Madsen, K. L. & Strømgaard, K. (2022). Bidirectional protein-protein interactions control liquid-liquid phase separation of PSD-95 and its interaction partners. iScience, 25(2), Article 103808. https://doi.org/10.1016/j.isci.2022.103808

Nielsen, K. H. (2022). Blomsterne, bierne og neonikotinoiderne. Weekendavisen, Sektion 4 (Ideer), 5.

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Kalinka Hansen