| Literature DB >> 17977533 |
Jingmei Zhang1, Andrew J Ghio, Mingxing Gao, Ke Wei, Glenn D Rosen, Daya Upadhyay.
Abstract
We hypothesized that the ambient air pollution particles (particulate matter; PM) induce cell cycle arrest in alveolar epithelial cells (AEC). Exposure of PM (25microg/cm(2)) to AEC induced cells cycle arrest in G1 phase, inhibited DNA synthesis, blocked cell proliferation and caused decrease in cyclin E, A, D1 and Cyclin E- cyclin-dependent kinase (CDK)-2 kinase activity after 4h. PM induced upregulation of CDK inhibitor, p21 protein and p21 activity in AEC. SiRNAp21 blocked PM-induced downregulation of cyclins and AEC G1 arrest. Accordingly, we provide the evidence that PM induces AEC G1 arrest by altered regulation of G1 cyclins and CDKs.Entities:
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Year: 2007 PMID: 17977533 PMCID: PMC2140149 DOI: 10.1016/j.febslet.2007.10.020
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124