RRC ID 2427
Author Tada A, Kato H, Hasegawa S.
Title Antagonistic effect of EGF against TGF beta1 on transformed phenotype and tropomyosin expression of human lung carcinoma A549 cells.
Journal Oncol Rep
Abstract TGF beta1 suppressed the colony forming ability of human lung carcinoma cell line, A549 cells in a dose-dependent manner. Accompanying these changes, the levels of the expression of high-molecular weight tropomyosin (TM) isoforms, especially TM1 and TM2, were significantly increased in the TGF beta1-treated A549 cells in a dose-dependent manner. When A549 cells were treated with TGF beta1 (2.5 pM) and EGF (1 nM) simultaneously, anchorage-independent growth of A549 cells was restored. In these cells, the expression of high-molecular weight TM decreased. The results suggest that the levels of the expression of high-molecular weight TM may be involved in antagonistic effects of EGF and TGF beta1 on the anchorage-independent growth of A549 cells.
Volume 7(6)
Pages 1323-6
Published 2000-1-1
DOI 10.3892/or.7.6.1323
PMID 11032937
MeSH Cell Adhesion / drug effects Cell Division / drug effects Cell Transformation, Neoplastic / drug effects* Dose-Response Relationship, Drug Drug Interactions Epidermal Growth Factor / pharmacology* Humans Lung Neoplasms / metabolism* Lung Neoplasms / pathology* Neoplastic Stem Cells / drug effects Phenotype Protein Isoforms Transforming Growth Factor beta / antagonists & inhibitors* Transforming Growth Factor beta / pharmacology Transforming Growth Factor beta1 Tropomyosin / biosynthesis* Tumor Cells, Cultured / drug effects
IF 3.417
Resource
Human and Animal Cells A549(RCB0098)