Thursday, April 11, 2013

Propulsion of liposomes using bacterial motors

Zhenhai Zhang, Zhifei Li, Wei Yu, Kejie Li, Zhihong Xie and Zhiguo Shi



Here we describe the utilization of flagellated bacteria as actuators to propel spherical liposomes by attaching bacteria to the liposome surface. Bacteria were stably attached to liposomes using a cross-linking antibody. The effect of the number of attached bacteria on propulsion speed was experimentally determined. The effects of bacterial propulsion on the bacteria–antibody–liposome complex were stochastic. We demonstrated that liposomal mobility increased when bacteria were attached, and the propulsion speed correlated with the number of bacteria.



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