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Ethanol disrupts cell cycle regulation in developing rat cortex interaction with transforming growth factor β1
Author(s) -
Siegenthaler Julie A.,
Miller Michael W.
Publication year - 2005
Publication title -
journal of neurochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.75
H-Index - 229
eISSN - 1471-4159
pISSN - 0022-3042
DOI - 10.1111/j.1471-4159.2005.03461.x
Subject(s) - cell cycle , cell growth , microbiology and biotechnology , corticogenesis , transforming growth factor , cyclin d1 , cyclin , cell , ethanol , biology , restriction point , chemistry , biochemistry , progenitor cell , stem cell
Ethanol is a potent teratogenic agent that disrupts several aspects of neuronogenesis, including the proliferation rate of cortical precursors. With regard to corticogenesis, possible targets of ethanol toxicity include soluble factors, like transforming growth factor β1 (TGFβ1), that regulate cortical growth and cell cycle proteins that control the kinetics of the cell cycle. The effect of ethanol on normal cell proliferation and TGFβ1‐regulated cell proliferation in the developing cortex was assessed using an organotypic slice culture model. Ethanol elongated the cell cycle, possibly through a decrease in the expression of G1 cell cycle protein cyclin D1. Further, ethanol exposure antagonized the anti‐proliferative action of TGFβ1 and blocked TGFβ1‐dependent increases in cell cycle inhibitor p21. Collectively, this evidence suggests that disruption of appropriate cell cycle protein expression and inhibition of TGFβ1 activity are potential mechanisms underlying the effect of ethanol on cortical development.