Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (1): 54-59.doi: 10.3969/j.issn.2095-4344.2017.01.010

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Interleukin-1beta regulates stem cell gene and chemokine receptor gene expression of myeloma cell lines via pretreatment on bone marrow mesenchymal stem cells

Wu Yu-jiao1, Fei Xiao-ming1, Ye Wei1, Tang Yu2, Lei Fang1, Zhu Yan1   

  1. 1Department of Hematology, 2Department of Rheumatism, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
  • Revised:2016-11-04 Online:2017-01-08 Published:2017-03-15
  • Contact: Fei Xiao-ming, M.D., Associate chief physician, Department of Hematology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
  • About author:Wu Yu-jiao, Studying for master’s degree, Department of Hematology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81202358, 81571582; Jiangsu Provincial Health Planning and Research Project, No. Z201512

Abstract:

BACKGROUND: Many studies have showed that mesenchymal stem cells derived from multiple myeloma patients display a wide range of abnormal biological features, including cytokine secretion, immune regulation and osteogenic differentiation.
OBJECTIVE: To investigate the expression of stem cell-associated proteins and chemotaxis-related receptors genes in myeloma cells when co-cultured with pulsed or sustained interleukin-1β treated bone marrow mesenchymal stem cells.
METHODS: There were three groups in the experiment: untreated normal bone marrow mesenchymal stem cells as control, bone marrow mesenchymal stem cells only treated with interleukin-1β for 1 day as 1-day group or once a day for 7 days as 7-day group. After 7 days of culture, treated or untreated bone marrow mesenchymal stem cells were employed as coating feeder for the direct co-culture with H929 cells for 3 days. At the end of co-culture, H929 myeloma cells were harvested, the expression of NANOG, SOX2 and OCT-4 was measured by western blot, and mRNA levels of CCR1, CCR2, CCR6 and CXCR4 were detected by real-time PCR.
RESULTS AND CONCLUSION: The SOX2 protein levels in H929 cells were significantly higher in both 1-day and 7-day groups than that of control group (P < 0.05). In the respective of chemotaxis-related receptors, the mRNA levels of CCR1 and CCR2 in myeloma cells in 7-day group were significantly higher than those in both control and 1-day groups (P < 0.05). Our in vitro results impose inflammatory cytokine interleukin-1β in bone marrow microenvironment has direct effect on myeloma cells, but also regulates myeloma cells indirectly via non-myeloma cells such as mesenchymal stem cells; besides, sustained elevated interleukin-1β level in the bone marrow has more profound effects on myeloma cells through mesenchymal stem cells. Mesenchymal stem cells act an important cellular component involved in myeloma progression.

 

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

Key words: Multiple Myeloma, Mesenchymal Stem Cells, Tumor Microenvironment, Interleukin-1beta

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