Transport of actin-decorated liposomes along myosin
molecules in vitro
Satoshi
Iwabuchi, Tetsuji Takahashi, Kuniyuki Hatori*
Department
of Bio-System Engineering,
Graduate
School of Science and Engineering,
Yamagata
University
Yonezawa
992-8510, Japan
*Corresponding author:
Kuniyuki Hatori
Phone +81 238 26 3727
Fax +81 238 26 3727
E-mail:
khatori@yz.yamagata-u.ac.jp
Abstract
@ We examined whether actin filaments bound to positively charged
liposomes could interact with myosin molecules and induce liposome motility.
When liposomes were constructed from the mixture of
1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and cationic N-[1-(2,3-Dioleoyloxy)propyl]-N,N,N-trimethylammonium
(DOTAP), actin filaments bound to the liposomes. The actin-bound liposomes
exhibited movement on myosin molecules in the presence of adenosine-5-triphosphate
(ATP). The displacement was almost linearly increased with time and the
behavior differed from that of Brownian motion. Furthermore, the presence of
30% DOTAP in liposomes was most effective for transport. These data show that
the actomyosin system was successfully integrated into the liposomes and
possesses the ability to actively transport useful agents enclosed within the
liposomes.
Keywords: Lipid; Actomyosin;
ATP hydrolysis; Drug delivery.