Journal of Dali University ›› 2022, Vol. 7 ›› Issue (10): 39-46.

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

Zhou Wen,Tang Ziyun,He Siyue,Liu Xiaohu,Zhou Yue*   

  1. (Pre-clinical College, Dali University, Dali,Yunnan  671000, China)

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

Abstract:

〔Abstract〕 Objective: To explore the mechanism of mouse bone marrow mesenchymal stem cell(BMMSC) inducing K562 cells aging through p16INK4a protein. Methods:Mesenchymal 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. Results: BMMSC showed fibroblast-like adherent growth, with 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 cells, block K562 cell cycle in G0/G1 phase, and improve SA-β-Gal activity and p16INK4a protein expression. Conclusion: BMMSC 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

CLC Number: