Intrauterine Pressures Adjusted by Reichert's Membrane Are Crucial for Early Mouse Morphogenesis.
Fiche publication
Date publication
mai 2020
Journal
Cell reports
Auteurs
Membres identifiés du Cancéropôle Est :
Dr LEFEBVRE Olivier
Tous les auteurs :
Ueda Y, Kimura-Yoshida C, Mochida K, Tsume M, Kameo Y, Adachi T, Lefebvre O, Hiramatsu R, Matsuo I
Lien Pubmed
Résumé
Mammalian embryogenesis proceeds in utero with the support of nutrients and gases from maternal tissues. However, the contribution of the mechanical environment provided by the uterus to embryogenesis remains unaddressed. Notably, how intrauterine pressures are produced, accurately adjusted, and exerted on embryos are completely unknown. Here, we find that Reichert's membrane, a specialized basement membrane that wraps around the implanted mouse embryo, plays a crucial role as a shock absorber to protect embryos from intrauterine pressures. Notably, intrauterine pressures are produced by uterine smooth muscle contractions, showing the highest and most frequent periodic peaks just after implantation. Mechanistically, such pressures are adjusted within the sealed space between the embryo and uterus created by Reichert's membrane and are involved in egg-cylinder morphogenesis as an important biomechanical environment in utero. Thus, we propose the buffer space sealed by Reichert's membrane cushions and disperses intrauterine pressures exerted on embryos for egg-cylinder morphogenesis.
Mots clés
Reichert's membrane, atomic force microscopy, basement membrane, early mouse morphogenesis, egg-cylinder morphogenesis, extracellular matrix, intrauterine pressures, micro-computed tomography, uterine mechanical environment, uterine uterine smooth muscle contractions
Référence
Cell Rep. 2020 May 19;31(7):107637