GGT在小鼠皮肤成纤维细胞中的表达及抑制酶活性对COL-I表达的影响

2021-09-22 01:36:53姜瑛王祥张蕾常怀广
医学食疗与健康 2021年5期
关键词:细胞增殖

姜瑛 王祥 张蕾 常怀广

【摘要】目的:观察γ-谷酰基转移酶(gamma-glutamyl transferase, GGT)在小鼠皮肤成纤维细胞中的表达,探究抑制其活性后对细胞存活率及Ⅰ型胶原表达的影响。方法:胰酶、胶原酶两步消化法分离新生C57BL/6小鼠皮肤成纤维细胞并在培养板中培养至稳定贴壁生长;免疫组化方法检测GGT在小鼠皮肤成纤维细胞中的表达;生长噻唑蓝(MTT)法检测不同浓度GGsTOP对体外培养小鼠皮肤成纤维细胞存活率的影响;免疫荧光观察COL-I的表达。结果:GGT在小鼠皮肤成纤维细胞中广泛表达。抑制剂GGsTOP可以促进小鼠皮肤成纤维细胞增殖,并且使细胞内Ⅰ型-胶原(type I collagen, COL-I)蛋白水平的表达增强。结论:GGT 在小鼠皮肤成纤维细胞中广泛表达,抑制GGT酶活性后促进Ⅰ型-胶原表达,提示抑制剂GGsTOP可能促进创面愈合再上皮化过程。

【关键词】γ-谷酰基转移酶;皮肤成纤维细胞;细胞增殖;Ⅰ型-胶原;再上皮化

[中图分类号]R363 [文献标识码]A [文章编号]2096-5249(2021)05-0014-04

GGT is expressed in mouse skin fibroblast and GGT inhibitory activities is involved in the upregulation of CollagenⅠ expression in the mouse skin fibroblast

Jiang Ying1, 2, Wang Xiang1, Zhang Lei2, Chang Huai-guang2*(1. HaiShu Dentistry Department of Stomatological, NingBoZheJiang 315000, China; 2. NingBo Vocational College of Health, Department of Stomatology, NingBo ZheJiang 315000, China)

[Abstract] Objective: To observe the gamma glutamyl transferase (GGT) expression on mouse skin fibroblasts(MSF), and explore whether inhibitory activity of GGT influence cell survival and collagen typeⅠ(COL-1) expression. Methods: Primary mouse dermal fibroblast cells were isolated from neonatal C57BL/6 mice by trypsin-collagen two-step digestion. The expression of GGT was analyzed by immunohistochemistry, and the effects of GGsTOP on proliferation of mouse skin fibroblasts cells were evaluated by MTT assay. The collagen type Ⅰ expression wasmeasured by immunofluorescence. Results: GGT was widely expressed on mouse skin fibroblasts. Inhibitors GGsTOP promoted mouse skin fibroblasts proliferation, and immunofluorescence showed that the protein expressions of COL-1were up-regulated. Conclusion: GGT was widely expressed in mouse skin fibroblast cells, inhibitors GGsTOP was related to the up-regulation of the expression of COL-1 while inhibition activity of GGT, inhibitors GGsTOP may promote on the re-epithelialization process of wound healing.

[Key words] gamma glutamyl transferase; skin fibroblast; cell proliferation; collagen type I; re-epithelialization

γ-谷氨酰轉肽酶(γ-glutamyltransferase, GGT)是γ-谷氨酰基循环的关键酶,表达在细胞表面,参与内源性调节因子白三烯及前列腺素的代谢。临床上,通常把血清中GGT水平升高作为肝脏疾病,酒精中毒,中风和糖尿病的指标[1-5],并且在许多癌症中,包括肺癌,肝癌,前列腺癌,乳腺癌中可发现细胞内的GGT活性升高;生理学上,GGT活性维持细胞内谷胱甘肽氧化还原的平衡,调节细胞氧化应激水平[6],这些过程均与皮肤组织愈合再上皮化的发生、发展及预后密切相关[7]。为此,本研究的目的是观察GGT在小鼠皮肤成纤维细胞中的表达情况,及抑制GGT酶活性后对小鼠皮肤成纤维细胞存活以及细胞外基质Ⅰ型-胶原的表达情况。……

登录APP查看全文

猜你喜欢
细胞增殖
白藜芦醇对血管紧张素Ⅱ诱导的平滑肌细胞
miRAN—9对肿瘤调控机制的研究进展
右江医学(2016年4期)2017-01-05 16:26:48
芹菜素诱导膀胱癌5637细胞凋亡研究
胃癌细胞增殖中长链非编码RNAMEG3产生的具体影响分析
TNFAIP1对肝癌细胞HepG2细胞增殖及凋亡的影响
浅谈信息技术在《细胞增殖》课堂教学中的利用
有关“细胞增殖”一轮复习的有效教学策略
多媒体技术与“细胞增殖”教学整合的案例分析