1. Dual Effects of Cigarette Smoke Extract on Proliferation of Endothelial Progenitor Cells and the Protective Effect of 5-aza-2′-deoxycytidine on EPCs against the Damage Caused by CSE
- Author
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Zhi-Hui He, Yue Yang, Ying-Qun Zhu, Ji-Ru Ye, Da Liu, Sheng-Dong He, Yan Chen, and Ping Chen
- Subjects
Time Factors ,Article Subject ,Decitabine ,lcsh:Medicine ,General Biochemistry, Genetics and Molecular Biology ,Flow cytometry ,Andrology ,Neovascularization ,chemistry.chemical_compound ,parasitic diseases ,Medicine ,Animals ,Progenitor cell ,Cell Shape ,Cells, Cultured ,Cell Proliferation ,Endothelial Progenitor Cells ,General Immunology and Microbiology ,medicine.diagnostic_test ,business.industry ,lcsh:R ,Smoking ,General Medicine ,Flow Cytometry ,In vitro ,Mice, Inbred C57BL ,medicine.anatomical_structure ,chemistry ,Cytoprotection ,DNA methylation ,embryonic structures ,cardiovascular system ,Azacitidine ,Deoxycytidine ,Bone marrow ,medicine.symptom ,business ,Biomarkers ,medicine.drug ,circulatory and respiratory physiology ,Research Article - Abstract
Cigarette smoke is a major public health problem associated with multitude of diseases, including pulmonary and vascular diseases. Endothelial progenitor cells (EPCs) contribute to neovascularization and play an important role in the development of these diseases. The effect of CSE on EPCs is seldom studied. The aim of the current study is to observe the effect of CSE on biological behavior of EPCs and, further, to search for potential candidate agent in protection of proliferation of EPCs against the damage caused by CSE exposurein vitro.Methods. The proliferations of EPCs isolated from bone marrow of C57BL/6J mice were assessed by MTT after incubating the EPCs with a series of concentrations of CSE (1.0%, 2.5%, 5.0%, and 10.0%) for different times (3, 6, and 24 hours) as well as with 1.0% CSE in presence of 5-AZA-CdR for 24 hours.Results. The proliferations of EPCs were significantly enhanced after 3 hours of exposure to concentrations of 1.0% and 2.5% CSE but depressed when exposed to concentrations of 5.0% and 10.0% CSE. Furthermore, the 5-AZA-CdR in concentrations of 2.0 μmol/L and 5.0 μmol/L partly protected against the depression of proliferation of EPCs caused by CSE exposure.Conclusions. The CSE showed dual effects on proliferation of EPCs isolated from mice. The 5-AZA-CdR partly protected the proliferation of EPCs against the damage caused by CSE exposurein vitro, suggesting that DNA methylation may be involved in the dysfunction of EPCs induced by CSE.
- Published
- 2014