Electron microscopic examination of podosomes induced by phorbol 12, 13 dibutyrate on the surface of A7r5 cells

Autor: Hideyuki Tanaka, Hong-Hui Wang, Sean E. Thatcher, Haruo Hagiwara, Hiromi Takano-Ohmuro, Kazuhiro Kohama
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Journal of Pharmacological Sciences, Vol 128, Iss 2, Pp 78-82 (2015)
Druh dokumentu: article
ISSN: 1347-8613
DOI: 10.1016/j.jphs.2015.03.002
Popis: The role of myosin light chain kinase (MLCK) in inducing podosomes was examined by confocal and electron microscopy. Removal of myosin from the actin core of podosomes using blebbistatin, a myosin inhibitor, resulted in the formation of smaller podosomes. Downregulation of MLCK by the transfection of MLCK small interfering RNA (siRNA) led to the failure of podosome formation. However, ML-7, an inhibitor of the kinase activity of MLCK, failed to inhibit podosome formation. Based on our previous report (Thatcher et al. J.Pharm.Sci. 116 116–127, 2011), we outlined the important role of the actin-binding activity of MLCK in producing smaller podosomes.
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