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논문 기본 정보

자료유형
학술저널
저자정보
Ju Eun-Jin (Department of Biological Science, Wonkwang University) Kwak Dong-Hoon (Department of Biological Science, Wonkwang University) Lee Dae-Hoon (Department of Biological Science, Wonkwang University) Kim Sung-Min (Department of Biological Science, Wonkwang University) Kim Ji-Su (Department of Biological Science, Wonkwang University) Kim Sun-Mi (Department of Biological Science, Wonkwang University) Choi Han-Gil (Department of Biological Science, Wonkwang University) Jung Kyu-Yong (Department of Pharmacology, Wonkwang University School of Medicine) Lee Seo-ul (Department of Pharmacology, Wonkwang University School of Medicine) Do Su-Il (Department of Life Science, Ajou University) Park Young-Il (Department of Biotechnology, Catholic University) Choo Young-Kug (Department of Biological Science, Wonkwang University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제28권 제9호
발행연도
2005.1
수록면
1,057 - 1,064 (8page)

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Apoptosis may occur in early embryos where the execution of essential developmental events has failed, and gangliosides, sialic acid-conjugated glycosphingolipids, are proposed to regulate cell differentiation and growth. To evaluate the regulatory roles of ganglioside GM3 in early embryonic development, this study examined its expressional patterns in apoptotic cells during early embryonic development in mice. Pre-implanted embryos were obtained by in vitro fertilization, which were treated at the 4-cell stage with three the apoptosis inducers, actinomycin D, camptothecin and cycloheximide, for 15 h. All three inducers significantly increased the percentage of apoptotic cells, as measured using a TUNEL method, but remarkably reduced the total cell numbers. The numbers of morula and blastocyst stages were significantly decreased by treatment of the embryos with the three apoptosis inducers compared with the control, with a similar result also observed in the number of blastomeres. Staining of early embryos with Hoechst 33342 revealed a significant percentage of apoptotic nuclei. Prominent immunofluo­rescence microscopy revealed a significant difference in the ganglioside GM3 expression in apoptotic embryos compared with the control, and RT-PCR also demonstrated a dramatic increase in ganglioside GM3 synthase mRNA in the apoptotic embryos. These results suggest that ganglioside GM3 may be pathophysiologically implicated in the regulation of early embryonic development through an apoptotic mechanism.

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