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자료유형
학술저널
저자정보
Paik, Kee-Joo (Department of Pharmacy, Pusan National University) Jeon, Seong-Sill (Department of Pharmacy, Pusan National University) Chung, Hae-Young (Department of Pharmacy, Pusan National University) Lee, Kyung-Hee (Department of Pharmacy, Pusan National University) Kim, Kyu-Won (Department of Molecular Biology and Pusan Cancer Research Center, Pusan National University) Chung, Joon-Ki (Department of Aquatic Life Medicine, College of Fisheries Sciences, Pukyong National University) Kim, Nam-Deuk (Department of Pharmacy, Pusan National 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 제21권 제4호
발행연도
1998.1
수록면
398 - 405 (8page)

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We investigated the effects of triterpene acids (TAs), ursolic acid (UA) and oleanolic acid (OA), on the induction of proliferation and differentiation of normal rat mammary epithelial cells (RMEC) or organoids cultured in Matrigel or primary culture system. To elucidate the effects, we tested their differentiation inducing activities with intercellular communication ability, cell cycle patterns, induction of apoptosis, and morphological differentiation in the three dimensional extracellular culture system. To study the changes of RMEC subpopulation in culture, the cultured cells were isolated, immunostained with peanut lectin (PNA) and anti-Thy-1.1 antibody and then analyzed with flow cytometry. Four different subpopulations, such as PNA and Thy-1.1 negative cells (B-), PNA positive cells (PNA+), Thy-1.1 positive cells (Thy-1.1+), PNA and Thy-1.1 positive cells (B+), were obtained and the size of each subpopulation was changed in culture with time in the presence of TAs. Intercellular communication was observed in culture for 7 days in TAs-treated cells, but not in culture for 4 days with scrape-loading dye transfer technique. $G_2$/M phase cells and the number of apoptotic population were increased in TAs-treated groups in cell cycle analyses. S phase fractions were reduced and the change of $G_1$ phase cells was not observed. The colonies with distinct multicelfular structures, such as stellate, ductal, webbed, squamous, lobulo-ductal colonies, were observed in Matrigel culture and the frequencies of each colony were changed in the presence of TAs. These results suggest that UA and OA have differentiation inducing effects on rat mammary epithelial cells in primary or in Matrigel culture.

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