17β-estradiol promotes bone marrow mesenchymal stem cell migration mediated by chemokine upregulation

Wenbi Zhang, Li X, Li Xiong, Xiong Li, He Li, Li H, Lu X, Xiang Lu, Chen J, Junling Chen, Lu Li, Li L, Sun X, Xiaoxi Sun, Congjian Xu, Xu C
Biochemical and biophysical research communications · 2020 · vol. 530(2) , pp. 381–388 · doi:10.1016/j.bbrc.2020.07.135 · PMID:32800343 · W3048657172
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This study investigates how 17β-estradiol enhances bone marrow mesenchymal stem cell migration by upregulating chemokines.

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Abstract

Bone marrow-derived cells engraft to the uterine endometrium and contribute to endometriosis. This study sought to further confirm that estrogen can promote the migration of bone marrow mesenchymal stem cells (BMSCs) and to investigate the function of estrogen on the secretion of chemokines during BMSC migration. BMSCs were treated with or without 17β-estradiol, cultured with or without endometrial stromal cells (ESCs), or pretreated with or without AMD 3100 (an antagonist of the SDF-1α receptor) before co-culture. A migration assay was used to investigate the changes in the migration of BMSCs. The secretion of chemokines in the co-culture medium was detected by chemokine analysis, and the mRNA expression of SDF-1α in cells was tested using quantitative real-time PCR. The results revealed that the migration of BMSCs was promoted by ESC, and the migration ability of BMSCs was enhanced after treatment with 17β-estradiol (p < 0.05). Through chemokine analysis, we further showed that 17β-estradiol promoted the secretion of chemokines especially for SDF-1α (p < 0.05). Gene Ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that these chemokines were mainly linked to the cytokine signaling pathway and interaction with cytokines receptors. Furthermore, the expression of SDF-1α mRNA was significantly increased in the 17β-estradiol treatment group (p < 0.001), and the migration of BMSCs was blocked by the use of our SDF-1α antagonist (p < 0.01). Our results indicate that 17β-estradiol could promote the chemotaxis and migration of BMSCs by up-regulating the secretion of chemokines, especially SDF-1α. Our study provides additional evidence to support and supplement the stem cell theory of endometriosis.

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MeSH descriptors

Cell Movement Cell Movement Chemokines Estradiol Mesenchymal Stem Cells Up-Regulation Up-Regulation Animals Cells, Cultured Chemokine CXCL12 Chemokine CXCL12 Chemokine CXCL12 Chemokines Chemokines Estradiol Estradiol Estrogens Estrogens Estrogens Mesenchymal Stem Cells

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