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Success of Embryo Transfer Depends on Tight Junction Biogenesis and Assembly of Blastocyst
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/325113
Establishment of the Adherens junction (AJ) and Tight junction (TJ) are important steps in terms of morphological formation during preimplantation develoment. Particularly, TJ complex is crucial for cavitation in blastocyst. So far, many TJ protein/genes are revealed. However, the biological function and regulation of TJ were not elucidated during post implantation. We depleted several TJ and TJ associated genes using RNA interference, and examined preimplantation development with TJ. We tested functionality of paracellular sealing to determine integrity of TJ formation and examined TE differentiation indirectly using outgrowth assay in vitro. We observed defect of paracellular permeability in the TJ related genes knockdown(KD) blastocyst and abnormal outgrowth. Particularly, trophoblast cells were not stretched out in the KD groups. Finally, we did embryo transfer using the TJ genes KD and control blastocysts into surrogate mothers. We found lower of the implantation rates/ maintenance of pregnancy in the TJ KD groups (less than 40%) than in the controls (about 80%). In conclusion, TJ integrity is can be used as a selective marker for developmentally competent embryos and successful pregnancy.
