EMMPRIN Is Secreted by Human Uterine Epithelial Cells in Microvesicles and Stimulates Metalloproteinase Production by Human Uterine Fibroblast Cells

Endometrial remodeling is a physiological process involved in the gynecological disease, endometriosis. Tissue remodeling is directed by uterine fibroblast production of matrix metalloproteinases (MMPs). Several MMPs are regulated directly by the protein extracellular matrix metalloproteinase induce...

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Published in:	Reproductive sciences (Thousand Oaks, Calif.) Calif.), 2012-12, Vol.19 (12), p.1292-1301
Main Authors:	Braundmeier, A. G., Dayger, C. A., Mehrotra, P., Belton, R. J., Nowak, R. A.
Format:	Article
Language:	eng
Subjects:	Basigin - metabolism Basigin - pharmacology Biological and medical sciences Cells, Cultured Culture Media, Conditioned Cytoplasmic Vesicles - metabolism Embryology Enzyme Induction Epithelial Cells - drug effects Epithelial Cells - metabolism Epithelial Cells - ultrastructure Estradiol - pharmacology Female Fibroblasts - enzymology Gynecology. Andrology. Obstetrics Humans Interleukin-1 - pharmacology Matrix Metalloproteinase 1 - genetics Matrix Metalloproteinase 2 - genetics Matrix Metalloproteinase 3 - genetics Medical sciences Medicine & Public Health Metalloproteases - biosynthesis Metalloproteases - genetics Obstetrics/Perinatology/Midwifery Original Original Articles Protein Kinase C - metabolism Reproductive Medicine RNA, Messenger - analysis Tetradecanoylphorbol Acetate - pharmacology Uterus - cytology Uterus - enzymology
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Summary:	Endometrial remodeling is a physiological process involved in the gynecological disease, endometriosis. Tissue remodeling is directed by uterine fibroblast production of matrix metalloproteinases (MMPs). Several MMPs are regulated directly by the protein extracellular matrix metalloproteinase inducer (EMMPRIN) and also by proinflammatory cytokines such as interleukin (IL)1-α/β. We hypothesized that human uterine epithelial cells (HESs) secrete intact EMMPRIN to stimulate MMPs. Microvesicles from HES cell-conditioned medium (CM) expressed intact EMMPRIN protein. Treatment of HES cells with estradiol or phorbyl 12-myristate-13-acetate increased the release of EMMPRIN-containing microvesicles. The HES CM stimulated MMP-1, -2, and -3 messenger RNA levels in human uterine fibroblasts (HUFs) and EMMPRIN immunodepletion from HES-cell concentrated CM reduced MMP stimulation (P < .05). Treatment of HUF cells with low concentrations of IL-1β/α stimulated MMP production (P < .05). These results indicate that HES cells regulate MMP production by HUF cells by secretion of EMMPRIN, in response to ovarian hormones, proinflammatory cytokines as well as activation of protein kinase C.
ISSN:	1933-7191 1933-7205