中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (7): 1041-1045.doi: 10.3969/j.issn.2095-4344.0570

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

过表达雌激素相关受体α干预沉默Bak1、Bcl2重组腺病毒载体转染MG63细胞的增殖与分化

黄  红1,黄佳纯2,黄宏兴3,王吉利2,刘少津2,汪悦东2   

  1. (1广州中医药大学护理学院,广东省广州市  510006;2广州中医药大学,广东省广州市  510006;3广州中医药大学附属骨伤科医院,广东省广州市  510240)
  • 收稿日期:2018-06-28 出版日期:2019-03-08 发布日期:2019-03-08
  • 通讯作者: 黄宏兴,博士,教授,广州中医药大学附属骨伤科医院,广东省广州市 510240
  • 作者简介:黄红,女,1970年生,广东省韶关新丰县人,汉族,高级实验师,主要从事护理技能教学实验管理工作。
  • 基金资助:

    国家自然科学基金(81674004),项目负责人:黄宏兴;国家自然科学基金(81302991);国家自然科学基金(81373653),项目负责人:黄宏兴

Proliferation and differentiation of MG63 cells transfected with recombinant adenovirus vector overexpressing estrogen-related receptor alpha after silencing Bak1 and Bcl2

Huang Hong1, Huang Jiachun2, Huang Hongxing3, Wang Jili2, Liu Shaojin2, Wang Yuedong2   

  1. (1School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; 2Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; 3Orthopedic Hospital Affiliated to Guangzhou University of Chinese Medicine, Guangzhou 510240, Guangdong Province, China)
  • Received:2018-06-28 Online:2019-03-08 Published:2019-03-08
  • Contact: Huang Hongxing, MD, Professor, Orthopedic Hospital Affiliated to Guangzhou University of Chinese Medicine, Guangzhou 510240, Guangdong Province, China
  • About author:Huang Hong, Senior experimentalist, School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81674004 (to HHX), 81302991 and 81373653 (to HHX)

摘要:

文章快速阅读:

文题释义:
雌激素相关受体:属于核受体超家族。是第一个发现的孤儿核受体,包括雌激素相关受体α,雌激素相关受体β和雌激素相关受体γ3种类型。雌激素相关受体的生物学功能主要体现在以不同的方式参与雌激素信号途径,雌激素相关受体与雌激素受体在骨骼组织和乳腺组织中拥有共同的靶基因。
腺病毒:腺病毒是DNA病毒,不插入细胞基因组,不形成稳定转染,其瞬时表达能力一般为2-4周,细胞增殖越快,表达时间越短,并且由于不会随机插入损伤基因组,相比较慢病毒,腺病毒对体外培养的目的细胞毒性较小。
摘要
背景:
雌激素缺乏是绝经后骨质疏松症的主要发病机制,而关于雌激素相关受体α(estrogen-related receptor alpha,ERRα)与骨质疏松症的相关性研究较少,ERRα在骨质疏松症中的具体作用及其机制在目前尚不明确。
目的:研究过表达ERRα对沉默Bak1、Bcl2重组腺病毒载体转染的MG63细胞和相关蛋白的影响。
方法:构建过表达ERRα和沉默Bak1、Bcl2腺病毒载体,将培养好的MG63细胞分成空载病毒组、Ad-shBak1组、Ad-shBcl2组、Ad-shBak1+shBcl2组,过表达ERRα进行干预。 MTT法检测细胞增殖,考马斯亮蓝蛋白定量检测碱性磷酸酶活性,流式法测定钙离子浓度,Western blot法分析骨调节蛋白(骨形态发生蛋白4、结缔组织生长因子、骨桥蛋白、Runt相关转录因子2、肿瘤坏死因子α)的表达。
结果与结论:①与空载病毒组对比,Ad-shBak1组的细胞活性、碱性磷酸酶活性均升高,钙离子浓度降低,各骨调节蛋白除肿瘤坏死因子α降低外,其余均升高;Ad-shBcl2组细胞活性、碱性磷酸酶活性、结缔组织生长因子均降低,但无显著性意义(P > 0.05),钙离子浓度、骨形态发生蛋白4、Runt相关转录因子2均降低,骨桥蛋白、肿瘤坏死因子α显著升高(P < 0.01);Ad-shBak1+shBcl2组的细胞活性、碱性磷酸酶活性稍升高,钙离子浓度稍降低,各骨调节蛋白水平均升高,但差异不明显(P > 0.05);②与Ad-shBcl2组比较, Ad-shBak1组与Ad-shBak1+shBcl2组细胞活性、碱性磷酸酶活性升高,钙离子浓度显著降低,除肿瘤坏死因子α水平显著降低外,其余骨调节蛋白水平显著升高(P < 0.01或P < 0.05);③结果提示,过表达ERRα可提高重组腺病毒Bak1转染后的MG63细胞增殖和碱性磷酸酶活性,降低钙离子浓度,且对骨调节蛋白有一定影响作用。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0001-9177-8106(黄红)

关键词: 骨质疏松, 雌激素受体α, ERRα, 基因沉默, Bak1, Bcl2, 细胞转染, 腺病毒, 骨调节蛋白, 凋亡蛋白, 国家自然科学基金, 组织构建

Abstract:

BACKGROUND: Estrogen deficiency is the main pathogenesis of osteoporosis in postmenopausal women, but there are few researches on the correlation between estrogen-related receptor α (ERRα) and osteoporosis. Little is known about their mechanisms of action.
OBJECTIVE: To investigate the effect of adenoviral overexpression of ERRα and silencing of Bak1/Bcl2 in MG63 cells.
METHODS: Adenovirus vector overexpressing ERRα and silencing of Bak1/Bcl2 was constructed. MG63 cells were divided into blank control, Ad-shBak1, Ad-shBcl2, and Ad-shBak1+shBcl2 groups. MG63 cells of different groups were infected by ERRα, Bak1, and Bcl2 overexpressing recombinant adenovirus. The cell proliferation was detected by MTT assay. The alkaline phosphatase activity was measured by Coomassie brilliant blue method. The Ca2+ concentration was detected by flow cytometry. The expression levels of related bone-regulating proteins (bone morphologic protein 4, connective tissue growth factor, osteopontin, Runt 2 and tumor necrosis factor α) were tested by western blot assay.   .
RESULTS AND CONCLUSION: Compared with the blank control group, the cell viability and alkaline phosphatase activity were significantly increased and Ca2+ concentration was significantly decreased, bone morphologic protein 4, connective tissue growth factor, osteopontin and Runt 2 were increased, and tumor necrosis factor α was decreased in the Ad-shBak1 group. The cell viability, alkaline phosphatase activity and connective tissue growth factor level were decreased, but not significant in the Ad-shBcl2 group (P > 0.05). In the Ad-shBcl2 group, the Ca2+ concentration, bone morphologic protein 4, and Runt 2 were significantly decreased, osteopontin and tumor necrosis factor α were significantly increased (P < 0.01). In the Ad-shBak1+shBcl2 group, the cell viability and alkaline phosphatase activity were increased, Ca2+ concentration was decreased, and level of each protein was increased (P > 0.05). Compared with the Ad-shBcl2 group, in the Ad-shBak1 and Ad-shBak1+shBcl2 groups, the cell viability and alkaline phosphatase activity were significantly increased, Ca2+ concentration was significantly decreased, bone morphologic protein 4, connective tissue growth factor, osteopontin and Runt 2 were increased, and tumor necrosis factor α was significantly decreased (P < 0.01 or P < 0.05). Our findings suggest that the overexpression of ERRα can increase the MG63 cell proliferation and alkaline phosphatase activity after transfection by Bak1 recombinant adenovirus, decrease Ca2+ concentration, and also has certain effects on related bone regulating proteins.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Osteoporosis, Postmenopausal, Estrogen Receptor alpha, Adenoviridae, Tissue Engineering

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