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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Jeong-Eun (Departments of Neurosurgery, Seoul National University College of Medicine) Paek, Sun-Ha (Departments of Neurosurgery, Seoul National University College of Medicine) Kim, Dong-Gyu (Departments of Neurosurgery, Seoul National University College of Medicine) Chung, Hyun-Tai (Departments of Neurosurgery, Seoul National University College of Medicine) Kim, Young-Yim (Departments of Clinical Research Institute, Seoul National University College of Medicine) Jung, Hee-Won (Departments of Neurosurgery, Seoul National University College of Medicine)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제37권 제1호
발행연도
2005.1
수록면
48 - 53 (6page)

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Objective: The purpose of this study is to elucidate in vitro responses to combined gamma knife irradiation and p53 gene transfection on human malignant glioma cell lines. Methods: Two malignant human glioma cell lines, U87MG (p53-wild type) and U373MG (p53-mutant) were transfected with an adenoviral vector containing p53 (MOI of 50) before and after applying 20Gy of gamma irradiation. Various assessments were performed, including, cell viability by MTT assay; apoptosis by annexin assay; and cell cycle by flow cytometry, for the seven groups: mock, p53 only, gamma knife (GK) only, GK after LacZ, LacZ after GK, GK after p53, p53 after GK. Results: Cell survival decreased especially, in the subgroup transfected with p53 after gamma irradiation. Apoptosis tended to increase in p53 transfected U373 MG after gamma irradiation (apoptotic rate, 38.9%). The G2-M phase cell cycle arrest markedly increased by transfecting with p53, 48 hours after gamma knife irradiation in U373 MG (G2-M phase, 90.8%). Conclusion: These results suggest that the in vitro effects of combined gamma knife irradiation and p53 gene transfection is an augmentation of apoptosis and G2-M phase cell cycle arrest, which are more exaggerated in U373 MG with p53 transfection after gamma knife irradiation.

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