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논문 기본 정보

자료유형
학술저널
저자정보
김진회 (건국대학교 동물자원연구센터) 차수경 (건국대학교 동물자원연구센터) 노민경 (건국대학교 동물자원연구센터) 송상진 (건국대학교 동물자원연구센터) 구덕본 (건국대학교 동물자원연구센터) 이훈택 (건국대학교 동물자원연구센터) 정길생 (건국대학교 동물자원연구센터)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제19권 제1호
발행연도
1995.1
수록면
55 - 63 (9page)

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The putative totipotency germ cells has a relative abundance of alkaline phosphatases. Thus, histological staining of AP activity offers a new route to isolate totipotent cells and also provides insights into culture systems of these cells. Furthermore, the AP staining technique is simple and fast, requires only the napthol AS/MS substrate in combination with trapping diazonium salts such as fast red or fast blue. However, our unexpected finding was that AP staining of mouse ES cells were detected in the undifferentiaed epiblast-derived cells as well as several types of differentiating cells. This findings are different from results of Talbot et al. (1993) reported usefulness of the AP staining and implies that histological staining of AP may not by useful to determine undifferentiaed state or totipotency of ES cells. Thus, we have investigated the patterns of AP expression by RT-PCR in order to identify a marker of undifferentiated ES/primordial germ (PG) cells. In RT-PCR analysis, embryonic (E)-AP was detected only in undifferentiated ES cells, but intestinal(I)-AP was not detected in all of the examined ES and PG cells. In addition, nonspecific (NS)-AP wasdetected in undifferentiated PG cell from day 7, 5 to 13 of gestation. Histological activity of AP in ES cells was completely suppressed by addition of L-phenylalanine (Phe), L-homoarginine (Har), and L-phenylalanylglycylglycine (PheGlyGly) as an inhibitor, but RT-PCR showed the same results as in the absence of an inhibitors. Our findings suggested that expression of E-AP and NS-AP may use as a marker to determine the undifferentiated status in ES and PG cells.

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