Effects of low level of methylmercury on proliferation of cortical progenitor cells
Effects of low level of methylmercury on proliferation of cortical progenitor cells
复制标题
低水平甲基汞对皮质祖细胞增殖的影响
DOI:
10.1016/j.brainres.2010.08.069
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发表时间:
2010
期刊:
影响因子:
2.9
通讯作者:
Xiao
中科院分区:
文献类型:
--
作者:
Mingyu Xu;Chonghuai Yan;Ying Tian;Xiao;Xiao
Methylmercury (MeHg) is a potent environmental neurotoxin that shows toxicity to developing central nervous system (CNS), causing brain damage in children even at low exposure levels. However, the mechanisms for its effect on CNS are not well understood. In current study, primary cultures of progenitor cells from embryonic cerebral cortex were used as a model system to study the potential effect and the underlying mechanism of MeHg on neural progenitor cells. Results showed that, in cultured cortical progenitor cells, 48-h exposure to low-level of MeHg (at 2.5nM, 5nM and 50nM, respectively) caused G1/S cell cycle arrest in a dose-dependent manner without inducing cell death. Interestingly, the expression of cyclin E, which promotes G1/S transition, but not cyclin D1 and CDK2, was selectively downregulated by exposure of MeHg. In addition, low-level of MeHg inhibited the maintenance of ERK1/2 phosphorylation, possibly by abolishing the late phase ERK1/2 activation induced by bFGF. Thus, MeHg may induce proliferation inhibition and cell cycle arrest of neural progenitor cells via regulating cyclin E expression and perturbing a pathway that involves ERK1/2.
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影响因子:
10.4
作者:
Faustman EM;Ponce RA;Ou YC;Mendoza MA;Lewandowski T;Kavanagh T
通讯作者:
Kavanagh T
DOI:
10.1002/tera.1420340112
发表时间:
1986
期刊:
Teratology
影响因子:
--
作者:
Howard,JD;Mottet,NK
通讯作者:
Mottet,NK
影响因子:
2.9
作者:
BURBACHER, TM;RODIER, PM;WEISS, B
通讯作者:
WEISS, B
影响因子:
3.8
作者:
Stringari, James;Nunes, Adriana K. C.;Farina, Marcelo
通讯作者:
Farina, Marcelo
DOI:
10.1006/taap.2001.9267
发表时间:
2002
期刊:
Toxicology and applied pharmacology.
影响因子:
--
作者:
Mendoza,MaAileenC;Ponce,RafaelA;Ou,YingC;Faustman,ElaineM
通讯作者:
Faustman,ElaineM