期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1990
卷号:87
期号:12
页码:4417-4420
DOI:10.1073/pnas.87.12.4417
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:Induction of differentiation in murine erythroleukemia cells (MELCs) involves a protein kinase C (PKC)-mediated step. Vincristine-resistant cells respond more rapidly to hybrid polar/apolar inducers than the parental cells. These vincristine-resistant MELCs contain elevated levels of the beta isozyme of PKC (PKC-beta). Exogenous homologous murine PKC-beta, incorporated into permeabilized MELCs, accelerates induced differentiation. Neither rat PKC-beta, nor mouse PKC-alpha, nor rat PKC-alpha, incorporated into permeabilized MELCs, is effective in altering the kinetics of induced differentiation. This provides direct evidence for a rate-limiting role for this PKC isozyme during N,N'-hexamethylenebisacetamide-mediated induced differentiation of a transformed cell.