Alterations in the Hippo Signaling Pathway During Adenogenesis Impairment in Postnatal Mouse Uterus

The mouse uterus, which consists of single-layered epithelium and undifferentiated mesenchyme at birth, begins to differentiate in the postnatal period. The process of adenogenesis, defined as gland development, begins on the Postnatal (PN) Day 5, and this process is very evident on the PN Day 10. Although various signaling pathways effective in the adenogenesis process but the mechanism underlying this progress have not been clarified yet. Hippo signaling pathway have roles in many cellular functions, such as proliferation, differentiation and cell death. But the relationship between the Hippo signaling pathway and uterus adenogenesis is unknown. The objective of this study has been to determine if there is a change in the Hippo signaling pathway in mice with impaired gland development during the adenogenesis process. To that aim, we use mouse uterus with normal gland development (control group) and gland development inhibited by progesterone (experimental group). Animals were sacrificed on the PN Days 5, 10 and 15. YAP and p-YAP by immunohistochemistry and immunoblotting techniques to identify the main components of Hippo Signaling Pathway. YAP, LATS1, LATS 2, MST1, NF2 and TAZ used for the RT-qPCR methods. In conclusion, Hippo signaling pathway components were reduced during the adenogenesis process in mouse with impaired gland development.