Abstract
Chemokine CXCL12 and its receptors CXCR4/CXCR7 play a pivotal role in many physiological and pathological situations, while the expression and function in human term trophoblast cells remain largely unknown. In the study, the expression and function of CXCL12 and its receptors CXCR4/CXCR7 in human term trophoblast cells were investigated. Immunocytochemistry and flow cytometry showed that the expression of CXCL12/CXCR4/CXCR7 could be detected in term trophoblast cells while expression level differed. The secretion of CXCL12 in human term trophoblast cells was confirmed by enzyme-linked immunosorbent assay (ELISA). In order to reveal the function of CXCL12, exogenetic recombinant human CXCL12 protein (rhCXCL12) was added to the cultured term trophoblast cells; results showed that cell proliferation ability was increased while cell apoptosis rate was decreased. Moreover, the effects of rhCXCL12 on term trophoblast cells could be diminished or attenuated by antibodies against CXCL12, CXCR4, or CXCR7, respectively. Therefore, these results revealed the important role of CXCL12 on human term trophoblast cells. Our study will provide new insights into understanding the role of CXCL12 on human term trophoblast cells.
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