Analysis of Mutations in the Human HPRT Gene Induced by Accelerated Heavy-Ion Irradiation
スポンサーリンク
概要
- 論文の詳細を見る
Multiplex PCR analysis of HPRT(-) mutations in human embryo (HE) cells induced by 230 keV/μm carbon-ion irradiation showed no large deletion around the exon regions of the locus gene in contrast to the irradiations at different LETs. To identify these mutations, the sequence alterations in a cDNA of hprt gene were determined for 18 mutant clones in this study. Missing of exon 6 was the most frequent mutational event (10 clones), and missing of both exons 6 and 8 was next most frequent event (6 clones), then base substitutions (2 clones). These characteristics were not seen in a similar analysis of spontaneous mutations, which showed base substitution (5 clones), frameshift (2 clones), missing of both exons 2 and 3 (2 clones), and a single unidentified clone. Direct sequencing and restriction enzyme digestion of the genomic DNA of the mutants which showed missing of exons 6 and 8 in the cDNA, supports the possibility that they were induced by aberrant mRNA splicing.
- 日本放射線影響学会の論文
著者
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谷田貝 文夫
理化学研究所戎崎計算宇宙物理研究室
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WATANABE Masami
Nagasaki Univ.
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Suzuki Masao
National Institute of Radiological Science
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Hanaoka Fumio
理化学研究所放射線生物学研究室
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Kato Takesi
School Of Medicine Osaka University
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Kato Tomohisa
関西外国語大学
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Kato Tomohisa
Radiation Biology Center Kyoto University
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Kase Youko
National Institute Of Radiological Sciences
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KAGAWA YASUHIRO
理化学研究所放射線生物学研究室
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KOBAYASHI AKIKO
Toray Research Center Inc.
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HIRANO MASAHIKO
Toray Research Center Inc.
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谷田貝 文夫
理化学研究所放射線生物学研究室
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谷田貝 文夫
理化学研究所
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Suzuki Masao
National Inst. Radiological Sci. Chiba Jpn
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Kato Tomohisa
Radiat. Biol. Center Kyoto University
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Kase Yoko
Space And Particle Radiation Science Research Group National Institute Of Radiological Sciences
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Hirano Masahiko
Toray Res. Center
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Kase Yoko
Research Center Of Charged Particle Therapy Natl Inst Radiol Sci.
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Kobayashi A
Pola Chemical Ind. Inc. Kanagawa Jpn
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Watanabe Masami
Nagasaki University
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Suzuki Masao
National Institute Of Radiological Sciences
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