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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.

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Andersen, E. S. (2002). Niles Eldredge - palæontologi og evolutionsteori. Pioneers in Biology 2002, 10-11.
Revsbech, N. P. & Finster, K. (2002). Oxygen: Effect on marine microbial communities. In Encyclopedia of Microbial Ecology (pp. 2277-2288). Wiley, New York.
Hein, J., Jensen, J. L. & Pedersen, C. N. S. (2002). Recursions for Statistical Multiple Alignment. Department of Mathematical Sciences , University of Aarhus.
Hein, J., Pedersen, C. N. S. & Jensen, J. L. (2002). Recursions for Statistical Multiple Alignment. Proceedings of the National Academy of Sciences (PNAS), 100(25), 14960-14965.
Dirac, A. M., Huthoff, H., Kjems, J. & Berkhout, B. (2002). Regulated HIV-2 RNA dimerization by means of alternative RNA conformation. Nucleic Acids Research, 30, 2647-2655.
A.M., D., H., H., Kjems, J. & B., B. (2002). Requirements for RNA-heterodimerization of the HIV-1 and HIV-2 genomes. Journal of General Virology, 83, 2533-2542.
Nørnberg, P., Merrison, J. P., Finster, K., Folkmann, F., Gunnlaugsson, H. P., Hansen, A., Jensen, A. M., Kinch, K., Lomstein, B. A. & Mugford, R. (2002). Simulation of martian surface conditions and dust transport. Paper presented at Graz, Austria, 16-19 September (ESA SP-518,November 2002).