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. 2011 Nov 6;2(10):845–854. doi: 10.1007/s13238-011-1097-z

SDF-1/CXCR4 axis modulates bone marrow mesenchymal stem cell apoptosis, migration and cytokine secretion

Xiaolei Liu 1, Biyan Duan 2, Zhaokang Cheng 1, Xiaohua Jia 1, Lina Mao 1,4, Hao Fu 1, Yongzhe Che 3, Lailiang Ou 1,✉, Lin Liu 1, Deling Kong 1,✉
PMCID: PMC4875294  PMID: 22058039

Abstract

Bone marrow mesenchymal stem cells (MSCs) are considered as a promising cell source to treat the acute myocardial infarction. However, over 90% of the stem cells usually die in the first three days of transplantation. Survival potential, migration ability and paracrine capacity have been considered as the most important three factors for cell transplantation in the ischemic cardiac treatment. We hypothesized that stromal-derived factor-1 (SDF-1)/CXCR4 axis plays a critical role in the regulation of these processes. In this study, apoptosis was induced by exposure of MSCs to H2O2 for 2 h. After re-oxygenation, the SDF-1 pretreated MSCs demonstrated a significant increase in survival and proliferation. SDF-1 pretreatment also enhanced the migration and increased the secretion of pro-survival and angiogenic cytokines including basic fibroblast growth factor and vascular endothelial growth factor. Western blot and RT-PCR demonstrated that SDF-1 pretreatment significantly activated the pro-survival Akt and Erk signaling pathways and up-regulated Bcl-2/Bax ratio. These protective effects were partially inhibited by AMD3100, an antagonist of CXCR4.We conclude that the SDF-1/CXCR4 axis is critical for MSC survival, migration and cytokine secretion.

Keywords: SDF-1/CXCR4, bone marrow mesenchymal stem cells, survival, migration, secretion

Footnotes

These authors contributed equally to the work.

Contributor Information

Lailiang Ou, Email: ouyll@nankai.edu.cn.

Deling Kong, Email: kongdeling@nankai.edu.cn.

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