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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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Andersen, K., Oliveira, C. L. P. D., Larsen, K. L., Poulsen, F., Callisen, T., Westh, P., Pedersen, J. S. & Otzen, D. (2009). The role of decorated SDS micelles in sub-cmc protein denaturation and association. Journal of Molecular Biology, 391, 207-226.

Ebbesen, M. & Pedersen, B. D. (2009). The Role of Ethics in the Daily Work of Oncology Physicians and Molecular Biologists: Results of an Empirical Study. Business and Professional Ethics Journal, 27(1), 19-46.

Basaiawmoit, R. V., Deva, T., Runager, K., Kristensen, T., Enghild, J. J. & Otzen, D. (2009). The Underlying Mechanisms of TGFBIp-mediated Corneal Dystrophies. Abstract from Asia ARVO, International Meeting on Research in Vision and Ophthalmology, Hyderabad International Convention Center. Abstract number: PAP05.01, Hyderabad, India.

Nielsen, K. H. (2009). Tilfældets lovmæssighed. Videnskab.dk.

Baouche, S., Hornekær, L., Baurichter, A., Luntz, A. C., Petrunin, V. V. & Sljivancanin, Z. (2009). Translational energy and state resolved observations of D and D₂ thermallydesorbing from D clusters chemisorbed on graphite. Journal of Chemical Physics, 131, 244707.

Li, Y., Li, Y., Yao, Y., Liu, B., Chen, M., Song, X. & Dong, M. (2009). Two-dimensional scaffold layer formations on a solid surface through xanthan polysaccharide: temperature effect. Colloids and Surfaces B: Biointerfaces, 74(1), 136-9. https://doi.org/10.1016/j.colsurfb.2009.07.007

Chen, M., Yanqing Li, Yinli Li, Yuhen Yao, Bo Liu & Xiangzhi Song and Mingdong Dong (2009). Two-dimensional scaffold layer formations on a solid surface through xanthan polysaccharide: Temperature effect. Colloids and Surfaces B: Biointerfaces, 74(1).

Nielsen, J. T., Bjerring, M., Jeppesen, M., Pedersen, R. O., Pedersen, J. M., Hein, K. L., Vosegaard, T., Skrydstrup, T., Otzen, D. & Nielsen, N. C. (2009). Unique Identification of Supramolecular Structures in Amyloid Fibrils by Solid-State NMR. Poster session presented at 50th Experimental NMR conference (ENC), Asilomar, CA, United States.

Nielsen, J. T., Bjerring, M., Jeppesen, M., Pedersen, R. O., Pedersen, J. M., Hein, K. L., Vosegaard, T., Skrydstrup, T., Otzen, D. & Nielsen, N. C. (2009). Unique identification of supramolecular structures in amyloid fibrils by solid-state NMR spectroscopy. Angewandte Chemie International Edition, 48, 2118-2121.

Malmos, K., Dong, M., Pillai, S., Kingshott, P., Besenbacher, F., Pedersen, S. U. & Daasbjerg, K. (2009). Using a hydrazone-protected benzenediazonium salt to introduce a near-monolayer of benzaldehyde on glassy carbon surfaces. Journal of the American Chemical Society, 131(13), 4928-36. https://doi.org/10.1021/ja809816x

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Kalinka Hansen