中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (1): 12-19.doi: 10.12307/2023.901

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

慢病毒沉默Piezo1蛋白与人骨髓间充质干细胞成骨分化及TAZ的表达

韦雨柔1,2,田佳庆1,2,何宪顺1,2,詹芝玮1,2,魏腾飞1,2,林天烨2,3,何  伟2,3,魏秋实2,3   

  1. 1广州中医药大学第三临床医学院,广东省广州市   510378;2广东省中医骨伤研究院,广东省广州市   510378;3广州中医药大学第三附属医院关节中心,广东省广州市   510378
  • 收稿日期:2022-11-18 接受日期:2023-01-29 出版日期:2024-01-08 发布日期:2023-06-28
  • 通讯作者: 魏秋实,博士,博士生导师,副主任医师,广东省中医骨伤研究院,广东省广州市 510378;广州中医药大学第三附属医院关节中心,广东省广州市 510378
  • 作者简介:韦雨柔,女,1996年生,贵州省兴义市人,广州中医药大学在读硕士,主要从事骨与关节的临床与基础研究。
  • 基金资助:
    国家自然科学基金面上项目(81873327),项目负责人:何伟;国家自然科学基金面上项目 (82274544),项目负责人:魏秋实;国家自然科学基金青年科学基金(82004392),项目负责人:何敏聪;广东省教育厅普通高校重点领域专项(2021ZDZX2005),项目负责人:魏秋实;广州中医药大学“双一流”与高水平大学学科协同创新团队重大项目(2021XK05),项目负责人:何伟;广州中医药大学“双一流”与高水平大学学科协同创新团队培育项目(2021XK41),项目负责人:魏秋实;广州市科学技术重点研发计划农业和社会发展科技项目专题(202206010184),项目负责人:魏秋实;广东省中医药局科研项目(20221199),项目负责人:魏秋实;广东省中医骨伤研究院开放课题重点项目(GYH202101-01),项目负责人:何伟;广东省中医骨伤研究院开放课题重点项目(GYH202101-04),项目负责人:魏秋实;广东省新黄埔中医药联合创新研究院2022年度第一批联合创新研究项目(2022IR012),项目负责人:魏秋实;毕节市科学技术局2022 年度“揭榜挂帅”项目(毕科合重大专项〔2022〕1号),项目负责人:魏秋实

Effect of lentiviral silencing of Piezo1 on osteogenic differentiation and TAZ expression in human bone marrow mesenchymal stem cells

Wei Yurou1, 2, Tian Jiaqing1, 2, He Xianshun1, 2, Zhan Zhiwei1, 2, Wei Tengfei1, 2, Lin Tianye2, 3, He Wei2, 3, Wei Qiushi2, 3   

  1. 1Third Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510378, Guangdong Province, China; 2Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou 510378, Guangdong Province, China; 3Joint Center, Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510378, Guangdong Province, China
  • Received:2022-11-18 Accepted:2023-01-29 Online:2024-01-08 Published:2023-06-28
  • Contact: Wei Qiushi, MD, Doctoral supervisor, Associate chief physician, Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou 510378, Guangdong Province, China; Joint Center, Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510378, Guangdong Province, China
  • About author:Wei Yurou, Master candidate, Third Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510378, Guangdong Province, China; Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou 510378, Guangdong Province, China
  • Supported by:
    National Natural Science Foundation of China (General Program), No. 81873327 (to HW); National Natural Science Foundation of China (General Program), No. 82274544 (to WQS); Young Science Foundation of the National Natural Science Foundation of China, No. 82004392 (to HMC); General University Key Fields Special Project of Guangdong Provincial Department of Education, No. 2021ZDZX2005 (to WQS); Major Project of "Double First-Class" and High-Level University Discipline Collaborative Innovation Team of Guangzhou University of Chinese Medicine, No. 2021XK05 (to HW); The Cultivation Project of "Double First-Class" and High-Level University Discipline Collaborative Innovation Team of Guangzhou University of Chinese Medicine, No. 2021XK41 (to WQS); Special Topic of Agricultural and Social Development Science and Technology Project of the Key Research and Development Plan of Guangzhou Science and Technology, No. 202206010184 (to WQS); Scientific Research Project of Guangdong Provincial Bureau of Traditional Chinese Medicine, No. 20221199 (to WQS); Key Open Project of Guangdong Academy of Traditional Chinese Medicine Osteopathy, No. GYH202101-01 (to HW); Key Open Project of Guangdong Academy of Traditional Chinese Medicine Osteopathy, No. GYH202101-04 (to WQS); The First Batch of Joint Innovation Research Project of Guangdong New Huangpu Joint Innovation Institute of Traditional Chinese Medicine in 2022, No. 2022IR012 (to WQS); the "Unveiling and Commanding" Project of Bijie Municipal Bureau of Science and Technology in 2022, No. [2022]1 (to WQS) 

摘要:


文题释义:

Piezo1:是一种非选择性机械传感离子通道,可对外界机械刺激做出反应激活细胞内信号传导,参与了如骨质疏松、心血管疾病、癌细胞转移等疾病的发生和发展进程。

TAZ:是具有PDZ结合基序的转录共激活因子,也被称为含有WW结构域的转录调节子1。它作为Hippo信号通路的一个核心成员,通过感知生物结构力学参与调节细胞增殖、组织发育等过程。


背景:Piezo1作为机械敏感蛋白与成骨分化密切相关,TAZ也被证明参与调节成骨分化,但Piezo1调控人骨髓间充质干细胞成骨分化时TAZ是否参与其中目前尚不明确,故研究其具体机制对防治股骨头坏死具有重要意义。
目的:探讨Piezo1对人骨髓间充质干细胞成骨分化及TAZ表达的影响。
方法:构建靶向Piezo1的siRNA,转染至293T细胞,通过RT-qPCR检测其沉默效率并筛选出Piezo1-Homo-2337进行包装,使用荧光染色检测其最佳感染复数值。Piezo1沉默重组慢病毒进一步被转染至人骨髓间充质干细胞中,通过RT-qPCR、Western blot检测其沉默效果;通过茜素红染色、碱性磷酸酶活性分析、免疫荧光染色、RT-qPCR及Western blot检测分析沉默Piezo1对人骨髓间充质干细胞成骨分化能力及TAZ表达的影响。

结果与结论:①与正常组、阴性对照组比较,转染si-Piezo1后人骨髓间充质干细胞中Piezo1的mRNA及蛋白水平明显降低;②与阴性对照组比较,si-Piezo1组碱性磷酸酶活性明显降低,钙沉积明显减少;③与阴性对照组比较,si-Piezo1组成骨相关基因Runx2、OPN、DLX5、osteocalcin、β-catenin及TAZ的mRNA水平明显降低。si-Piezo1组TAZ、β-catenin的蛋白表达明显降低;相反,si-Piezo1组p-TAZ、p-β-catenin的蛋白表达明显增加;④与阴性对照组比较,免疫荧光染色结果提示si-Piezo1组人骨髓间充质干细胞中TAZ、β-catenin的表达较少;⑤结果表明Piezo1可促进人骨髓间充质干细胞的成骨分化,沉默Piezo1后人骨髓间充质干细胞的成骨能力明显降低,同时TAZ的表达也同样降低。

https://orcid.org/0000-0003-0088-9893(韦雨柔);https://orcid.org/0000-0002-1274-9997(魏秋实) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 股骨头坏死, 人骨髓间充质干细胞, Piezo1, TAZ, 成骨分化

Abstract: BACKGROUND: Piezo1, a mechanosensitive protein, is tightly connected to osteogenic differentiation, and it has been demonstrated that TAZ has a role in regulating osteogenic differentiation. It is unclear whether TAZ participates in the regulation of osteogenic differentiation of human bone marrow mesenchymal stem cells by Piezo1, so it is crucial to investigate its unique mechanism to prevent osteonecrosis of the femoral head.
OBJECTIVE: To elucidate what function Piezo1 plays in osteogenic differentiation and TAZ expression in human bone marrow mesenchymal stem cells. 
METHODS: The siRNA targeting Piezo1 was constructed and transfected into 293T cells. The silencing efficiency was detected by RT-qPCR. The selected Piezo1-Home-2337 was packaged according to the silencing efficiency, and its optimal multiplicity of infection value was assayed by immunofluorescence staining. The packaged Piezo1 silencing recombinant lentivirus was transfected into human bone marrow mesenchymal stem cells, and its silencing effect was detected by RT-qPCR and western blot assay. Alizarin red staining, alkaline phosphatase activity analysis, immunofluorescence staining, RT-qPCR and western blot assay were utilized to analyze the effect of silencing Piezo1 on the osteogenic differentiation of human bone marrow mesenchymal stem cells.
RESULTS AND CONCLUSION: (1) The mRNA and protein levels of Piezo1 in human bone marrow mesenchymal stem cells transfected by si-Piezo1 were decreased significantly, with a statistically significant difference compared with normal and negative control groups. (2) The alkaline phosphatase activity in the si-Piezo1 group was much lower and the calcium deposition in the si-Piezo1 group was significantly reduced compared with the negative control group. (3) The mRNA levels of osteogenesis-related genes including Runt-related transcription factor 2 (Runx2), osteopontin (OPN), distal-less homeobox 5 (DLX5), osteocalcin, β-catenin and Tafazzin (TAZ) in the si-Piezo1 group were significantly decreased compared with the negative control group. Afterward, the expression levels of TAZ and β-catenin protein in the si-Piezo1 group were down-regulated significantly compared with the negative control group, whereas the expression levels of p-TAZ and p-β-catenin protein in the si-Piezo1 group had the opposite condition. (4) The results of immunofluorescence staining showed that the expression of TAZ and β-catenin in human bone marrow mesenchymal stem cells in the si-Piezo1 group was less compared with the negative control group. (5) These findings indicate that Piezo1 can promote the osteogenic differentiation of human bone marrow mesenchymal stem cells. The osteogenic ability of human bone marrow mesenchymal stem cells is significantly reduced after silencing Piezo1, and the expression of TAZ is also reduced.

Key words: osteonecrosis of the femoral head, human bone marrow mesenchymal stem cell, Piezo1, TAZ, osteogenic differentiation

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