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논문 기본 정보

자료유형
학술저널
저자정보
Ki, Min-Hyo (Department of Pharmacy, Pusan National University) Paik, Kee-Joo (Department of Pharmacy, Pusan National University, Research Institute of Drug Development, Pusan National University) Lee, Ji-Hyeon (Department of Pharmacy, Pusan National University, Research Institute of Drug Development, Pusan National University) Chung, Hae-Young (Department of Pharmacy, Pusan National University, Research Institute of Drug Development, Pusan National University) Lee, Kyung-Hee (Department of Pharmacy, Pusan National University) Kim, Kyu-Won (Department of Molecular Biology and Research Institute of Drug Development, Pusan National University) Kim, Nam-Deuk (Department of Pharmacy, Pusan National University, Research Institute of Drug Development, 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 제3호
발행연도
1998.1
수록면
298 - 304 (7page)

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Retinoids are applied to not only cancer prevention but also cancer chemotherapy by stimulating differentiation of cells. We studied differentiation inducing effect of all-trans retinoic acid (ATRA) by studying proportion of high dense fractions of stem-like cells and the size of S phase fraction in cell cycle. From mammary organoids obtained from 7- to 8-week old F344 female rat mammary gland, we cultured rat mammary epithelial cells (RMEC) and treated physiological doses of $10^{-6}$, $10^{-7}$, and $10^{-8}$ M ATRA from the first day and then cultured for 4, 7, and 14 days. After that, immunostaining was performed using peanut agglutinin (PNA) and anti-Thy-1.1 monoclonal antibody (Thy-1.1) that can be used as markers of differentiation. We separated four different cell subpopulations by flow cytometry: cells negative to both reagents (B-), PNA-positive cells (PNA+), Thy-1.1-positive cells (Thy-1.1+), and cells positive to both reagents (B+). We observed continuous decreases of high dense fractions of stem-like cells (PNA+ subpopulations) for 14 days and as much decreases as high doses of ATRA, which were thought to be proportional to doses of ATRA. We labeled RMEC with bromodeoxyuridine and investigated cell cycle fractions that went through S phase. We observed a tendency of decrease of S phase fraction with time in culture, which, is thought to be related to continuous decreases of PNA+ subpopulations and inhibitory role of ATRA on cell cycle. These results suggest that physiological doses of ATRA could stimulate differentiation of RMEC and convert stem-like RMEC to differentiated cells in SFM for a relatively long period of 14 days.

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