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논문 기본 정보

자료유형
학술저널
저자정보
Jang, Su Jin (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences [KIRAMS]) Kang, Joo Hyun (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences [KIRAMS]) Moon, Byung Seok (Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine) Lee, Yong Jin (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences [KIRAMS]) Kim, Kwang Il (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences [KIRAMS]) Lee, Tae Sup (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences [KIRAMS]) Choe, Jae Gol (Department of Nuclear Medicine, Korea University Anam Hospital, Korea University College of Medicine) Lim, Sang Moo (Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences [KIRAMS])
저널정보
대한방사성의약품학회 대한방사성의약품학회지 대한방사성의약품학회지 제1권 제2호
발행연도
2015.1
수록면
118 - 122 (5page)

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Suicidal gene therapy is based on the transduction of tumor cells with "suicide" genes encoding for prodrug-activating enzymes that render target cells susceptible to prodrug treatment. Suicidal gene therapy results in the death of tumor with the expression of gene encoding enzyme that converts non-toxic prodrug into cytotoxic product. Cytochrome P450 4B1 (CYP4B1) activates 4-ipomeanol (4-IPO) or 2-aminoanthracene (2-AA) to cytotoxic furane epoxide and unsaturated dialdehyde intermediate.In this study, therapeutic effects of suicidal gene therapy with rabbit CYP4B1/2-AA or 4-IPO system were evaluated in HT-29 (human colon cancer cell). pcDNA-CYP4B1 vector was transfected into HT-29 by lipofection and stable transfectant was selected by treatment of hygromycin ($500{\mu}g/mL$) for 3 weeks. Reverse transcription polymerase chain reaction (RT-PCR) analysis was performed for confirmation of CYP4B1 expression in CYP4B1 gene transduced cell. The cytotoxic effects of CYP4B1 transduced cell were determined using dye-exclusion assay after treatment of 2-AA or 4-IPO for 96 hrs. Dye-exclusion assay showed that $IC_{50}$ of HT-29 and CYP4B1 transduced HT-29 was 0.01 mM and 0.003 mM after 4-IPO or 2-AA treatment at 96 hrs exposure, respectively. In conclusion, CYP4B1 based prodrug gene therapy probably have the potential for treatment of colorectal adenocarcinoma.

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