CD147 is required for matrix metalloproteinases-2 production and germ cell migration during spermatogenesis.

Abstract:

:Spermatogenesis is a highly programmed process that requires the degradation of the extracellular matrix and the remodeling of tight junctions (TJ) to facilitate differentiating germ cell migration. Matrix metalloproteinases (MMPs) are essential in regulating Sertoli cell TJ in the testis. CD147 is known to stimulate the production of MMPs in tumor metastasis and its knockout mice are infertile. However, the functional relationship between CD147 and MMPs in spermatogenesis has not been investigated. In the present study, we examined the expression profile of CD147 and MMPs during mouse testicular development by RT-PCR, western blot and immunofluorescence staining. We also examined CD147 involvement in the production of MMP-2 and the migration of germ cells (GC-1 and GC-2 cells) using CD147 antibody or synthetic microRNA mimics-mediated knockdown. The results showed that CD147 was present at all stages of testicular development from 7 to 56 days post-partum (dpp). CD147 expression was found to increase after 21 days from moderate levels in 7 and 14 days. Of the eight MMPs studied, MMP-2, MMP-7, MMP-9 and MMP-23 were detected to have changes in expression during testicular development, with MMP-2 showing the largest change. CD147 and MMP-2 were co-localized in spermatogonia, spermatocytes and round spermatids in mouse testis, while in human testis, they were co-localized in spermatocytes and round spermatids. MMP-2 expression and migration of GC-1 and GC-2 cells were reduced by interfering with CD147 expression and function in vitro. These data suggest that CD147 regulates migration of spermatogonia and spermatocytes via induction of MMP-2 production during spermatogenesis.

journal_name

Mol Hum Reprod

authors

Chen H,Fok KL,Yu S,Jiang J,Chen Z,Gui Y,Cai Z,Chan HC

doi

10.1093/molehr/gar013

subject

Has Abstract

pub_date

2011-07-01 00:00:00

pages

405-14

issue

7

eissn

1360-9947

issn

1460-2407

pii

gar013

journal_volume

17

pub_type

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