大理大学学报 ›› 2022, Vol. 7 ›› Issue (10): 39-46.

• 基础医学 • 上一篇    下一篇

骨髓间充质干细胞靶向p16INK4a蛋白诱导慢性髓细胞性白血病细胞K562衰老的分子机制

周 雯,唐紫云,何思悦,刘小虎,周 玥*   

  1. (大理大学基础医学院,云南大理 671000

  • 收稿日期:2022-02-25 修回日期:2022-03-20 出版日期:2022-10-15 发布日期:2022-11-15
  • 通讯作者: 周玥,教授,博士,E-mail:zhouyue_120@ sina.com。
  • 作者简介:周雯,硕士研究生,主要从事中药药理学研究。
  • 基金资助:

    国家自然科学基金项目(8186003881660731

Moleecular Mechanism of K562 Senescence in Chronic Myeloigenous Leukemia Cells Induced by Targeting of P16INK4a Protein by Bone Marrow Mesenchymal Stem Cells

Zhou WenTang ZiyunHe SiyueLiu XiaohuZhou Yue*   

  1. Pre-clinical CollegeDali UniversityDaliYunnan  671000China

  • Received:2022-02-25 Revised:2022-03-20 Online:2022-10-15 Published:2022-11-15

摘要:

[摘要] 目的:探究小鼠骨髓间充质干细胞通过p16INK4a蛋白诱导K562细胞衰老的作用机制。方法:从小鼠骨髓中分离、纯化间充质干细胞,使用流式细胞术鉴定表面标志物、检测K562细胞周期变化;油红O和茜素红染色鉴定其成脂、成骨分化能力;CCK-8法检测K562细胞增殖能力;SA-β-Gal染色检测K562细胞衰老情况;蛋白印迹法检测p16INK4a蛋白的表达。结果:骨髓间充质干细胞呈成纤维样贴壁生长,低表达造血干细胞标志物CD45,高表达干细胞表面标志物CD29CD44;具有成骨、成脂分化能力。骨髓间充质干细胞能够抑制K562细胞的增殖;阻滞K562细胞周期于G0/G1期;提高SA-β-Gal的活性和p16INK4a蛋白的表达。结论:骨髓间充质干细胞能够通过上调p16INK4a蛋白的水平诱导K562细胞衰老。

关键词:

"> font-size:10.5pt, ">骨髓间充质干细胞, 衰老, 白血病, K562细胞, p16INK4a蛋白

Abstract:

AbstractObjectiveTo explore the mechanism of mouse bone marrow mesenchymal stem cellBMMSCinducing K562 cells aging through p16INK4a protein. MethodsMesenchymal stem cells were isolated and purified from mouse bone marrow. The changes of the K562 cell cycle were detected and the surface markers were identified by flow cytometry. The ability of adipogenic and osteogenic differentiation was identified by oil red O and alizarin red staining. The proliferation of K562 cells was detected by CCK-8 method. The senescence of K562 cells was detected by SA-β-Gal staining. The expression of p16INK4a protein was detected by Western blot. ResultsBMMSC showed fibroblast-like adherent growthwith low expression of hematopoietic stem cell marker CD45 and high expression of stem cell surface markers CD29 and CD44 which had osteogenic and adipogenic differentiation ability. BMMSC could inhibit the proliferation of K562 cellsblock K562 cell cycle in G0/G1 phaseand improve SA-β-Gal activity and p16INK4a protein expression. ConclusionBMMSC can induce the senescence of K562 cells by up-regulating the level of p16INK4a protein.

Key words:

"> font-size:10.5pt, ">bone marrow mesenchymal stem cell, senescence, leukemia, K562 cells, p16INK4a protein

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