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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, L. N. (2009). Subexponential loss rate asymptotics for Lévy processes. Thiele Centre, Institut for Matematiske Fag, Aarhus Universitet.
Hjørringgaard, C. U., Vad, B. S., Nielsen, S. B., Nielsen, N. C., Otzen, D. & Skrydstrup, T. (2009). Templated Multimers of Antimicrobial Peptides. Poster session presented at 8th Australian Peptide Conference, Peptides - Tools, Targets & Therapeutics , Australia.
Kjær, L., Giehm, L., Heimburg, T. R. & Otzen, D. (2009). The influence of vesicle composition and size on a-synuclein structure and stability. Biophysical Journal, 96.