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A gene regulation network orchestrates processes ensuring the maintenance of cellular identity and genome integrity. Small RNAs generated by the RNAse III DICER have emerged as central players in this network. Moreover, deletion of in mice leads to early embryonic lethality. To better understand the underlying mechanisms leading to this phenotype, we generated -deficient mouse embryonic stem cells (mESCs). Their detailed characterization revealed an impaired differentiation potential, and incapacity to exit from the pluripotency state. We also observed a strong accumulation of LINE-1 (L1s) transcripts, which was translated at protein level and led to an increased L1s retrotransposition. Our findings reveal as a new essential player that sustains mESCs self-renewal and genome integrity by controlling L1s regulation.
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http://dx.doi.org/10.1002/2211-5463.12174 | DOI Listing |
PLoS One
September 2025
Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan.
In adult mammals and other highly developed animals, incomplete wound healing, scar formation, and fibrosis occur. No treatment for complete tissue regeneration is currently available. However, in mice, at up to 13 days of gestation, early embryonic wounds regenerate without visible scarring.
View Article and Find Full Text PDFCell
August 2025
Department of Cardiac Surgery, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Key Laboratory of Developmental Genes and Human Disease, State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, School of Life Science and
Early organogenesis is a crucial stage in embryonic development, characterized by extensive cell fate specification to initiate organ formation but also by a high susceptibility to developmental defects. Here, we profiled 285 serial sections from six E7.5-E8.
View Article and Find Full Text PDFCleft Palate Craniofac J
September 2025
School and Hospital of Stomatology, Zunyi Medical University, Zunyi, China.
ObjectiveTo investigate the effects of zinc concentration on palatal development in fetal mice and its association with the aryl hydrocarbon receptor (AhR) signaling pathway.MethodsPregnant C57BL/6J mice were fed diets with varying zinc concentrations and randomly divided into a zinc-rich (ZR) group, a normal-zinc (NZ) group, and a zinc-deficient (ZD) group. Embryonic development was observed, and the expression levels of AhR signaling pathway-related factors were examined.
View Article and Find Full Text PDFJ Cell Sci
September 2025
Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Suite 301, Atlanta, GA 30322, USA.
ARL13B is a regulatory GTPase enriched in cilia, making it a popular marker for this organelle. Arl13bhnn/hnn mice lack ARL13B expression, die during midgestation, and exhibit defects in ciliogenesis. The R26Arl13b-Fucci2aR biosensor mouse line directs the expression of fluorescently tagged full-length Arl13b cDNA upon Cre recombination.
View Article and Find Full Text PDFJ Genet Genomics
September 2025
Institute of Pediatrics, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China; Sh
Chromodomain helicase DNA binding protein 7 (CHD7), an ATP-dependent chromatin remodeler, plays versatile roles in neurodevelopment. However, the functional significance of its ATPase/nucleosome remodeling activity remains incompletely understood. Here, we generate genetically engineered mouse embryonic stem cell lines harboring either an inducible Chd7 knockout or an ATPase-deficient missense variant identified in individuals with CHD7-related disorders.
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