中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (31): 6616-6624.doi: 10.12307/2025.686

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

干扰和过表达端粒酶卡哈尔体蛋白1小鼠骨髓间充质干细胞的生物学特性对比

林书倩1,2,3,赵玺龙1,2,3,高  景1,2,3,潘兴华1,2,3,李自安1,2,3,阮光萍1,2,3   

  1. 1解放军联勤保障部队第九二〇医院基础医学实验室,云南省昆明市  650032;2干细胞与免疫细胞生物医药技术国家地方联合工程研究中心,云南省昆明市  650032;3云南省细胞治疗技术转化医学重点实验室,云南省昆明市  650032
  • 收稿日期:2024-07-08 接受日期:2024-08-27 出版日期:2025-11-08 发布日期:2025-02-18
  • 通讯作者: 阮光萍,博士,副主任医师,解放军联勤保障部队第九二〇医院基础医学实验室,云南省昆明市 650032;干细胞与免疫细胞生物医药技术国家地方联合工程研究中心,云南省昆明市 650032;云南省细胞治疗技术转化医学重点实验室,云南省昆明市 650032
  • 作者简介:林书倩,女,1998年生,河南省南阳市人,汉族,昆明医科大学在读硕士,技师,主要从事细胞衰老的研究。
  • 基金资助:
    云南省科技计划项目重大科技专项(2018ZF007),项目负责人:潘兴华;云南省重点项目资助课题(202101AS070039),项目负责人:阮光萍

Comparison of biological characteristics of mouse bone marrow mesenchymal stem cells after interference and overexpression of telomere Cajal body protein-1

Lin Shuqian1, 2, 3, Zhao Xilong1, 2, 3, Gao Jing1, 2, 3, Pan Xinghua1, 2, 3, Li Zian1, 2, 3, Ruan Guangping1, 2, 3   

  1. 1Basic Medical Laboratory of 920 Hospital of Joint Logistics Support Force of Chinese PLA, Kunming 650032, Yunnan Province, China; 2Integrated Engineering Research Center of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China; 3Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunnan Province, Kunming 650032, Yunnan Province, China
  • Received:2024-07-08 Accepted:2024-08-27 Online:2025-11-08 Published:2025-02-18
  • Contact: Ruan Guangping, MD, Associate chief physician, Basic Medical Laboratory of 920 Hospital of Joint Logistics Support Force of Chinese PLA, Kunming 650032, Yunnan Province, China; Integrated Engineering Research Center of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China; Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunnan Province, Kunming 650032, Yunnan Province, China
  • About author:Lin Shuqian, Master candidate, Technician, Basic Medical Laboratory of 920 Hospital of Joint Logistics Support Force of Chinese PLA, Kunming 650032, Yunnan Province, China; Integrated Engineering Research Center of Cell Biological Medicine of State and Regions, Kunming 650032, Yunnan Province, China; Transfer Medicine Key Laboratory of Cell Therapy Technology of Yunnan Province, Kunming 650032, Yunnan Province, China
  • Supported by:
    Major Science and Technology Project of Yunnan Science and Technology Plan Project, No. 2018ZF007 (to PXH); Key Project of Yunnan Province Applied Basic Research Program, No. 202101AS070039 (to RGP)

摘要:

文题释义:

端粒酶卡哈尔体蛋白1:是近年来发现的与细胞寿命息息相关的一种新型蛋白,是端粒酶的关键核心蛋白,在调节端粒酶活性与延长端粒长度方面发挥着重要的作用。端粒酶卡哈尔体蛋白1也被证实与肿瘤的发病和预后有关。大量研究表明在多种类型的癌症中均发现端粒酶卡哈尔体蛋白1上调的现象,端粒酶卡哈尔体蛋白1表达量上升增强了细胞的增殖、分化以及侵袭、迁移的能力,使肿瘤细胞的转移能力增强。
骨髓间充质干细胞:间充质干细胞最初是一类成纤维细胞样细胞,易于贴附于塑料培养板表面,在机体内间充质干细胞存在于骨髓、胎盘、脐带、羊膜、脂肪等组织中,尤以骨髓中数量较多、分化能力最强。目前发现骨髓间充质干细胞具有向骨、软骨、脂肪、肌肉、肌腱、神经等组织分化的潜能。骨髓间充质干细胞在组织损伤及退行性病变的治疗中前景巨大。

摘要
背景:随着年龄的增长,骨髓间充质干细胞的功能逐渐降低,延缓骨髓间充质干细胞自身衰老成为一项重要课题。
目的:通过改变端粒酶卡哈尔体蛋白1(telomerase cajal body protein 1,TCAB1)基因的表达,探讨延缓骨髓间充质干细胞衰老的途径。
方法:细胞贴壁法培养小鼠骨髓间充质干细胞,应用重组慢病毒技术过表达或干扰骨髓间充质干细胞中的TCAB1基因,采用qPCR检测衰老相关基因P16、P21、P53、P27的表达,qPCR检测Telomere的表达判断端粒的相对长度;Western blot检测衰老蛋白P16、P21、P53、P27的表达;CCK-8法检测细胞增殖情况;Annexin V-PE/7-AAD细胞凋亡试剂盒检测细胞凋亡情况。
结果与结论:过表达TCAB1基因骨髓间充质干细胞中衰老相关基因及蛋白的表达量下降,端粒相对长度增加,细胞增殖能力较强,细胞凋亡数量较少,细胞呈现年轻状态;干扰TCAB1基因骨髓间充质干细胞中衰老相关基因及蛋白的表达量上升,端粒相对长度缩短,细胞增殖能力较弱,细胞凋亡数量较多,细胞呈现衰老状态。以上结果表明,在适当范围内增加TCAB1的表达量,可以延缓细胞衰老的速度。

关键词: 骨髓间充质干细胞, 端粒酶卡哈尔体蛋白1, 衰老, 过表达, 干扰, 细胞增殖, 细胞凋亡, 工程化干细胞

Abstract: BACKGROUND: With the increase of age, the function of bone marrow-derived mesenchymal stem cells is gradually reduced, and delaying the aging of bone marrow-derived mesenchymal stem cells itself has become an important topic. 
OBJECTIVE: To explore ways to delay the aging of bone marrow-derived mesenchymal stem cells by changing the expression of telomerase Cajal body protein 1 (TCAB1) gene. 
METHODS: Mouse bone marrow-derived mesenchymal stem cells were cultured by cell adhesion method. TCAB1 gene in bone marrow-derived mesenchymal stem cells was overexpressed and interfered by recombinant lentivirus technique. The expression of aging related genes P16, P21, P53, and P27 was detected by qPCR. The relative length of telomeres was detected by qPCR. The expression of aging proteins P16, P21, P53, and P27 was detected by western blot assay. Cell proliferation was detected by CCK-8 assay. Annexin V-PE/7-AAD apoptosis kit was used to detect the degree of cell apoptosis. 
RESULTS AND CONCLUSION: Bone marrow-derived mesenchymal stem cell lines overexpressing TCAB1 gene had decreased expression of senescence related genes and proteins, increased Telomere relative length, stronger cell proliferation, less apoptosis, and a youthful state. The expression of age-related genes and proteins in bone marrow mesenchymal stem cells interfering with TCAB1 gene increased, and the relative telomere length decreased; cell proliferation ability was weak; cell apoptosis was more, and cells showed senescence. These results indicate that increasing the expression of TCAB1 in an appropriate range can delay the rate of cell senescence.

Key words: bone marrow mesenchymal stem cell, telomerase Cajal body protein 1, aging, overexpression, interference, cell proliferation, cell apoptosis, engineered stem cell

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