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Loss-of-function mutations with circadian rhythm regulator Per1/Per2 lead to premature ovarian insufficiency†.


ABSTRACT: The mechanism underlying premature ovarian insufficiency remains incompletely understood. Here we report that mice with Per1m/m; Per2m/m double mutations display a decrease in female fertility starting approximately at 20 weeks old, with significantly less pups born from 32 weeks old onwards. Histological analysis revealed that a significant reduction of ovarian follicles was observed in the Per1/Per2 mutants compared with the littermate controls examined at 26 and 52 weeks old, while the difference was not statistically significant between the two groups at 3 and 8 weeks old. We further showed that vascular development including the ovarian follicle associated vascular growth appeared normal in the Per1/Per2 mutant mice, although clock genes were reported to regulate angiogenesis in zebrafish. The findings imply that loss-of-function mutations with Per1/Per2 result in a premature depletion of ovarian follicle reserve leading to the decline of reproductive capacity.

SUBMITTER: Zheng Y 

PROVIDER: S-EPMC6483055 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Loss-of-function mutations with circadian rhythm regulator Per1/Per2 lead to premature ovarian insufficiency†.

Zheng Yating Y   Liu Chao C   Li Yan Y   Jiang Haijuan H   Yang Peixin P   Tang Jing J   Xu Ying Y   Wang Han H   He Yulong Y  

Biology of reproduction 20190401 4


The mechanism underlying premature ovarian insufficiency remains incompletely understood. Here we report that mice with Per1m/m; Per2m/m double mutations display a decrease in female fertility starting approximately at 20 weeks old, with significantly less pups born from 32 weeks old onwards. Histological analysis revealed that a significant reduction of ovarian follicles was observed in the Per1/Per2 mutants compared with the littermate controls examined at 26 and 52 weeks old, while the differ  ...[more]

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