Cigarette smoke extract affects the GATA-2 expression of vascular smooth muscle cells

doi:10.3969/j.issn.2095-4344.2013.41.008

Abstract

Abstract:

BACKGROUND: Smoking is one of the major risk factors for the formation of atherosclerosis.
OBJECTIVE: To investigate the effect of cigarette smoke extract on the concentration of GATA-2 in the vascular smooth muscle cells and in which the role of the early growth response factor-1.
METHODS: Vascular smooth muscle cells were cultured in vitro. The vascular smooth muscle cells were treated with various concentrations of cigarette smoke extract (0, 5%, 10%, 20%), then the reverse transcription PCR was applied to detect the mRNA expression of GATA-2. The vascular smooth muscle cells were treated with cigarette smoke extracts in the optimal concentration for 0, 4, 8, 12 and 24 hours, and then the expression of GATA-2 mRNA was observed, as well as the changes of expression of GATA-2 mRNA after added with growth response factor-1.
RESULTS AND CONCLUSION: Compared to the 0 concentration group, the expression of GATA-2 mRNA after treated with low concentration (5%) of cigarette smoke extract was increased more significantly than moderate concentration (10%) and high concentration (20%). The vascular smooth muscle cells in 0 hour group expressed GATA-2 mRNA at low level. The GATA-2 mRNA began to increase within 4 hours and reached peak at the 8 hours after stimulated with cigarette smoke extract of 5% concentration. After added with growth response factor-1 inhibitors, the expression of GATA-2 mRNA in 5% cigarette smoke extract induced vascular smooth muscle cells was decreased. Cigarette smoke extract can promote the increasing of GATA-2 by growth response factor-1, while the GATA-2 expression is reduced after the inhibition of growth response factor-1.

Key words: plant extracts, matrix metalloproteinase 2, GATA transcription factors, muscle, smooth, vascular

CLC Number:

R318

Xu Jing-hua, Liu Gui-nan, Zhang Jing. Cigarette smoke extract affects the GATA-2 expression of vascular smooth muscle cells[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(41): 7235-7240.

Figures/Tables 3

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