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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Subtilisin proprotein convertase-6 expression in the mouse uterus during implantation and artificially induced decidualization.

During implantation, a balance of factors regulates the invasive properties of the embryo and the anti-invasive properties of uterine decidua. Although antiproteinases such as the metalloproteinase inhibitor TIMP-3 are thought to play critical roles in preventing the overaggressive invasion of trophoblasts, the mechanism of antiproteinase regulation is unknown. Recently, the prohormone convertase SPC-6 has been found to be co-expressed in embryo-proximal decidua in association with TIMP-3. As members of this serine proteinase family are known to activate latent TGFbeta family members which regulate decidual TIMP-3 levels, we sought to characterize the expression of SPC-6 during pregnancy and artificial decidualization. In this study, we demonstrate that the zone of SPC-6 gene expression exhibits a great degree of temporal and spatial overlap with TIMP-3 gene expression in uterine decidua from E5.5 through to E8. 5. Like TIMP-3, we demonstrate that SPC-6 expression is induced during the decidual cell response using an in vivo model of artificial decidualization. Both the secreted and membrane bound forms of SPC-6 are expressed throughout the period of decidualization, suggesting that SPC-6 may play multiple roles during this developmental period. This is confirmed by our observation of the movement of SPC-6 expression to the presumptive placental region, as TIMP-3 expression regresses at the implantation site.[1]


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