Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (50): 8037-8042.doi: 10.3969/j.issn.2095-4344.2015.50.001

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Bone marrow mesenchymal stem cells from multiple myeloma patients aberrantly affect chemotactic function of myeloma cell lines

Fei Xiao-ming1, Li Jun-xia2, Tang Yu1, Lei Fang1, Lu Hua2   

  1. 1Department of Hematology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China; 2First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • Received:2015-11-09 Online:2015-12-03 Published:2015-12-03
  • Contact: Lu Hua, Chief physician, Professor, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • About author:Fei Xiao-ming, M.D., Associate chief physician, Department of Hematology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
  • Supported by:

    Multiple Myeloma; Bone Marrow; Mesenchymal Stem Cells; Chemotaxis; Tissue Engineering
    Funding: the National Natural Science Foundation of China, No. 81202358, 81571582; Jiangsu Province Health Research Fund, No. Z201512

Abstract:

BACKGROUND: Although bone marrow mesenchymal stem cells from multiple myeloma patients present a variety of abnormalities, it is unclear how these abnormal mesenchymal stem cells influence the chemotactic function of myeloma cell lines.
OBJECTIVE: To investigate the in vitro effects of bone marrow mesenchymal stem cells from normal donors versus multiple myeloma patients on the chemotactic capacity of myeloma cell lines.
METHODS: In vitro cultured bone marrow mesenchymal stem cells derived from either normal donors (N-MSCs group) or newly-diagnosed multiple myeloma patients (MN-MSCs group) were directly co-cultured with U266 cells, in the presence or absence of bortezomib; and then harvested U266 cells were assayed for Transwell migration 
and mRAN expression of chemotaxis-related genes. U266 Transwell migration to conditioned medium derived from either N-MSCs or MN-MSCs was also tested.
RESULTS AND CONCLUSION: After co-cultured with N-MSCs or MN-MSCs, U266 cells harvested from MN-MSCs group showed increased spontaneous Transwell migration and up-regulated CCR1 mRNA level than those from N-MSCs group (P < 0.05), whatever bortezomib was present or not. However, there was no evident difference between U266 cell Transwell migration to conditioned medium derived from either MM-MSCs group or N-MSCs group. Our study implies that there may be some intrinsic aberrance in bone marrow mesenchymal stem cells derived from multiple myeloma patients, which can modulate the chemotactic migration of myeloma cell lines when they directly interact with each other.
 

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