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생쥐 생식소 및 배아의 프로케스테론 수용체 막성분 1과 2의 발현에 관한 연구

Expression of progesterone receptor membrane component 1 and 2 in the mouse gonads and embryos

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주제분류생물학

초록

본 연구진은 선행 연구에서 progesterone receptor membrane component 2 (pgrmc2) 유전자가 미성숙 난자에서 높게 발현하는 것을 발견하였다. 본 연구는 pgrmc2와 pgrmc1 유전자가 쥐의 생식소와 배아의 발달 단계에 따라 어떻게 발현하는지 알아 보기 위해 수행하였다. 이들 유전자는 난소, 정소, 배아, 그리고 난자의 다양한 발달 단계에서 발현하는 것을 알 수 있었다. 쥐 난자 세포막에 프로게스테론 수용체가 존재하는 것은 progesterone-3-O-carboxymethyl oxime-BSA-fluorescein isothiocyanate (P4-BSA-FITC)의 결합을 이용하여 확인하였다. 본 결과는 프로게스테론 수용체의 세포막 구성 요소들이 생쥐의 난자, 배아, 그리고 생식소에서 발현함을 최초로 확인한 연구결과다. 스테로이드 수용체의 세포막 구성 요소들의 기능, 특히 프로게스테론 수용체의 세포막 구성 요소들의 기능을 알아 보기 위해 추후 연구가 계속되어야 할 것이다.

Abstract

Previously, we found progesterone receptor membrane component 2 (pgrmc2) was highly expressed in germinal vesicle (GV) stage oocytes. The present study was conducted to characterize the expression of pgrmc2, as well as pgrmc1, in the mouse gonads and embryos according to their developmental stages. We found that these membrane components were expressed in ovaries, testes, and embryos at various developmental stages in addition to oocytes. Progesterone-3-O-carboxymethyl oxime-BSA-fluorescein isothiocyanate (P4-BSA-FITC) was applied to visualize the presence of the progesterone receptor on mouse oocyte membrane, and we confirmed that immobilized progesterone is localized at surface of the oocyte. This is, at our knowledge, the first report regarding the expression of membrane component of progesterone receptor in the mouse oocytes, embryos, and gonads. The function and signal transduction pathway of progesterone receptor membrane components in oocytes requires further studies.

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