Activation of Phorbol Ester Responsive Form of Protein Kinase Cζ in Association with Ca2+ -Induced Differentiation of Primary Cultured Mouse Epidermal Cells

The Japanese Journal of Pharmacology

Haruna Nagumo¹  Satoshi Yamamoto¹  Ryuichi Kato¹  Kiyotaka Nishikawa¹ 

[1] Department of Pharmacology, School of Medicine, Keio University

关键词: Protein kinase C;    Isozyme;    Ca2+ -induced differentiation;   

DOI  :  10.1254/jjp.73.171

学科分类：药理学

来源: Nihon Yakuri Gakkai Henshuubu / Japanese Pharmacological Society

【 摘 要 】

References(15)Cited-By(1)In primary cultured mouse epidermal cells, protein kinase C (PKC) ζconsists of multiple forms: a low salt-eluted PKCζ (1-PKCζ, 79 and 85 kDa) and a high salt-eluted PKCC (h-PKCζ, 79 and 85 kDa) by anion-exchange column chromatography (K. Nishikawa et al., Cell. Signal. 7, 491-504, 1995). In the present study, PKC isozyme-specific responses during terminal differentiation of epidermal cells, which were induced by the increase of Ca2+ -concentration in culture medium, were examined. After 24 hr-treatment with 1.8 mM Ca2+, 79-kDa 1-PKCζ in the particulate fraction was apparently shifted to the 85-kDa form. The phosphatidylserine-dependent kinase activity of this 1-PKCζ was increased in association with the shift. These results suggest the pivotal role of 1-PKCζ in the particulate fraction in the Ca2+ -induced epidermal cell differentiation processes.

【 授权许可】

Unknown