Acta Anatomica Sinica ›› 2020, Vol. 51 ›› Issue (1): 32-39.doi: 10.16098/j.issn.0529-1356.2020.01.006

• Cancer Biology • Previous Articles     Next Articles

Anti-apoptotic effect of human acute myeloid leukemia cell line HL-60 stimulated by interleukin-6 from bone marrow stromal cells HS-5

CHEN Ya-lin BAI Tian-ge LI Yao-yao WANG Wen-qiang WEI Hong*   

  1. Key Laboratory for Xinjiang Endemic and Ethnic Disease School of Medicine, Shihezi University, Xinjiang Shihezi 832000, China
  • Received:2019-05-14 Revised:2019-10-07 Online:2020-02-06 Published:2020-04-21
  • Contact: WEI Hong E-mail:weihong-2@163.com

Abstract:

Objective To investigate the effect of interleukin(IL)-6 secreted by bone marrow stromal cells HS-5 on activity and apoptosis of human acute myeloid leukemia(AML) cells HL-60 and its possible mechanism.  Methods HL-60 cells and HS-5 cells were cultured in vitro, and the co-culture system was established. Scanning electron microscope, ELISA, cell counting kit-8(CCK-8), AnnexinV-FITC/PI, double-staining flow cytometry, Real-time PCR and Western blotting techniques were used to detect the changes of viability and apoptosis of HL-60 cells, respectively. HL-60 cells from different groups were inoculated into BALB/c nude mice to observe and record tumorigenesis.  Results IL-6 secreted by bone marrow stromal cells HS-5 could enhance the viability and inhibit the apoptosis of HL-60 cells, and down-regulate the expression of pro-apoptotic gene Bax and and up-regulate the expression of anti-apoptotic gene Bcl-2 in HL-60 cells. HL-60 cells in co-culture group had the strongest tumorigenicity in BALB/c nude mice, while HL-60 cells alone had the weakest tumorigenicity.  Conclusion Part of the mechanism by which bone marrow stromal cells HS-5 promote the proliferation of HL-60 cells and inhibit their apoptosis may be through the secretion of IL-6.

Key words: Human acute myeloid leukemia, Bone marrow stromal cells, Interleukin-6, Western blotting, Nude mice

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