Tobacco-specific Carcinogen 4-(Methylnitrosoamino)-1-(3-pyridyl)-1-butanone(NNK) Activating ERK1/2 MAP Kinases and Stimulating Proliferation of Human Mammary Epithelial Cells

Autor: Lan-ying Liu, Yang An, Bo-xun Zhang, Zhi-bo Chen, Zhe Wang
Rok vydání: 2007
Předmět:
Zdroj: Chemical Research in Chinese Universities. 23:76-80
ISSN: 1005-9040
DOI: 10.1016/s1005-9040(07)60015-4
Popis: Cigarette smoking is correlated with the development of various cancers. 4-(Methylnitrosoamino)-1-(3-pyridyl)-1-butanone(NNK) is one of the major tobacco-specific carcinogens in the cigarette smoke, which increases the risk of breast cancer. In the present study, it was demonstrated that NNK rapidly activated ERK1 and ERK2 MAP kinases in human normal mammary epithelial cells. It was found that there are two different routes for the activation of ERK1/2 with NNK. One is from nicotinic receptor nAchR to MEK1/2, and the other is from tyrosine kinase containing receptor to MEK1/2. The tobacco-specific carcinogen NNK shows a strong proliferative effect on normal human mammary epithelial cells and cancer mammary epithelial cells.
Databáze: OpenAIRE