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Full-Text Articles in Medicine and Health Sciences
Oogenesis Defects In A Mutant Mouse Model Of Oculodentodigital Dysplasia, Dan Tong, Deanne Colley, Renee Thoo, Tony Y. Li, Isabelle Plante, Dale W. Laird, Donglin Bai, Gerald M. Kidder
Oogenesis Defects In A Mutant Mouse Model Of Oculodentodigital Dysplasia, Dan Tong, Deanne Colley, Renee Thoo, Tony Y. Li, Isabelle Plante, Dale W. Laird, Donglin Bai, Gerald M. Kidder
Physiology and Pharmacology Publications
The essential role of connexin43 (Cx43) during oogenesis has been demonstrated by the severe germ cell deficiency and arrested folliculogenesis observed in Cx43 knockout mice. Recently, another mutant mouse strain became available (Gja1Jrt/+) that carries the dominant loss-of-function Cx43 mutation, Cx43G60S. Gja1Jrt/+ mice display features of the human disease, oculodentodigital dysplasia (ODDD), caused by mutations in the GJA1 gene. We have used this new mutant strain to study how a disease-linked Cx43 mutant affects oogenesis. We found that female mutant mice are subfertile with significantly reduced mating success and small litters. The phosphorylated species of the Cx43 protein are reduced …
Identification Of Wnt/Β-Catenin Signaling Pathway Components In Human Cumulus Cells, Hong-Xing Wang, Francis R. Tekpetey, Gerald M. Kidder
Identification Of Wnt/Β-Catenin Signaling Pathway Components In Human Cumulus Cells, Hong-Xing Wang, Francis R. Tekpetey, Gerald M. Kidder
Physiology and Pharmacology Publications
Signaling via the conserved WNT/β-CATENIN pathway controls diverse developmental processes. To explore its potential role in the ovary, we investigated the expression of WNTs, frizzled (FZD) receptors and other pathway components in human cumulus cells obtained from oocytes collected for in vitro fertilization. Proteins were detected in cultured cells using immunofluorescence microscopy. Protein–protein interactions were analyzed by means of immunoprecipitation. WNT2, FZD2, FZD3 and FZD9 were identified but WNT1, WNT4 and FZD4 were not detected. WNT2 is co-expressed with FZD2, FZD3 and FZD9. Co-immunoprecipitation using WNT2 antibody demonstrated that WNT2 interacts with both FZD3 and FZD9, but only FZD9 antibody …