我国温石棉与其4种代用品致V79细胞肿瘤蛋白谱表达的影响
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国家自然科学基金重点项目(41130746);中哈国际合作项目(2006020021);四川省科技厅科研基金项目(2010S20037)


The effects of chrysotile and its four substitutes from two major production areas of China on the expression of oncoprotein in V79 cells
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    摘要:

    将中国仓鼠肺细胞(Chinese Hamster Lung Cell, V79细胞)分别暴露于不同浓度的温石棉及代用品粉体悬液中48 h后,MTT检测细胞存活率;免疫组化法检测V79细胞中Survivin、Cap43、Bcl-2、p16和p53肿瘤相关蛋白的分布及表达,分析我国两大主产区的温石棉及4种主要人工代用品对V79细胞的增殖抑制率与肿瘤相关蛋白谱的影响,以探讨我国温石棉及人工代用品是否是导致肿瘤的高危因素之一。结果表明: ① 在6种粉体中,四川新康及陕西陕南温石棉对细胞生长抑制最强,岩棉纤维粉体对细胞生长抑制最弱。各粉体对V79细胞的存活率影响不同,随着暴露粉体浓度的增加,细胞的存活率降低,呈现剂量效应关系。②各染毒组细胞的癌基因Survivin、Cap43、Bcl-2表达的蛋白上调,抑癌基因p16和p53表达的蛋白下调,以胞浆阳性为主。综合以上结果,发现我国不同地区温石棉及其代用品均不同程度抑制V79细胞生长,上调肿瘤相关蛋白Survivin、Cap43及Bcl-2,下调p16和p53,从而诱导癌症的发展。

    Abstract:

    Chinese hamster lung cells (V79 cells) were exposed to the powder suspensions of chrysotile and its substitutes with different concentrations, and the survival rate of cells was monitored by MTT. After 48 h, the location, distribution and expression of Survivin, Cap43, Bcl-2, p16 and p53 in V79 cell were comparatively examined by immunohistochemistry. The effects of chrysotile and four main artificial substitutes from China's two major production areas on the expression of oncoprotein in V79 cells were studied to investigate the factors of lung cancer. Some conclusions have been reached: ① In the six kinds of powder, the inhibition action of rockwool on the growth of cells was the weakest, whereas the inhibition action of chrysotile from Xinkang of Sichuan and Southern Shaanxi on the growth of cells was the strongest. Chrysotile from Xinkang of Sichuan, chrysotile from southern Shaanxi, glass fiber, ceramic fiber, rockwool and wollastonite have certain degrees of influence on the survival rate of V79 cells. With the increase of the concentration of powder, the survival rate of cells decreases, suggesting dose-effect relationship. ② The expression of Survivin, Cap43 and Bcl-2 is upward regulated and the expression of p16 and p53 was downward regulated in V79 cells, which is obvious in the powder suspension of chrysotile from southern Shaanxi and Xinkang of Sichuan and glass fiber. The expression is mainly in cytoplasm. The results prove that the influence of different kinds of powder on the cells differs in degree. Chrysotile and its substitutes can induce the development of cancer by upward regulating the expression of Survivin, Cap43 and Bcl-2 and downward regulating the expression of p16 and p53.

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曾娅莉,王洪州,董发勤,等, 2013. 我国温石棉与其4种代用品致V79细胞肿瘤蛋白谱表达的影响[J]. 岩石矿物学杂志, 32(6):803~808.
ZENG Ya-li, WANG Hong-zhou, DONG Fa-qin, et al, 2013. The effects of chrysotile and its four substitutes from two major production areas of China on the expression of oncoprotein in V79 cells[J]. Acta Petrologica et Mineralogica, 32(6): 803~808.

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  • 收稿日期:2013-08-29
  • 最后修改日期:2013-10-17
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  • 在线发布日期: 2013-11-19
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