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| http://purl.uniprot.org/citations/33338549 | http://www.w3.org/2000/01/rdf-schema#comment | "Cumulus expansion is essential for ovulation and oocyte maturation in mammals. Previous studies suggest that this process requires certain cumulus expansion enabling factors, induced by LH surge, that activate SMAD signaling locally. However, their identities remain uncertain. Using a superovulated rat model, we showed that Bmp8 transcripts were abundant in cumulus cell-oocyte complexes (COCs) and their levels can be further induced during ovulation. By analyzing human COC-related transcriptomic datasets, BMP8 transcripts in cumulus cells were also found to be significantly elevated along with the maturation status and developmental competence of enclosed oocytes. In cultured rat COCs, treatment with recombinant BMP8A protein activated both SMAD1/5/8 and SMAD2/3 pathways; the resulting SMAD2/3 signaling induced COC expansion as well as the expression of COC expansion-related genes, whereas the resulting SMAD2/3 and SMAD1/5/8 activations were both required for protecting expanded cumulus cells from apoptosis. Taken together, our data demonstrated that addition of BMP8 protein in the in vitro rat COC cultures not only promotes cumulus expansion but also sustains survival of expanded cumulus cells via different SMAD downstreams. With these capabilities, BMP8 may have clinical applications to ameliorate the fertilizability and subsequent developmental competence of the enclosed oocytes when doing in vitro COC maturation."xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.mce.2020.111121"xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/author | "Luo C.W."xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/author | "Wang Y.W."xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/author | "Wu F.J."xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/date | "2021"xsd:gYear |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/name | "Mol Cell Endocrinol"xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/pages | "111121"xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/title | "Human bone morphogenetic protein 8A promotes expansion and prevents apoptosis of cumulus cells in vitro."xsd:string |
| http://purl.uniprot.org/citations/33338549 | http://purl.uniprot.org/core/volume | "522"xsd:string |
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