| Project/Area Number |
24651052
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Risk sciences of radiation/Chemicals
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| Research Institution | Nara Medical University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MORI Toshio 奈良県立医科大学, 医学部, 研究教授 (10115280)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 修復 / DNA 損傷 / ｼｸﾛﾌﾞﾀﾝ 型 ﾀﾞｲﾏｰ / ﾓﾉｸﾛｰﾅﾙ 抗体 / CPD |
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| Research Abstract |
Cyclobutane pyrimidine dimers (CPDs) is one of the major types of DNA damage induced by solar UV and is repaired exclusively by a nucleotide excision repair system (NER) in humans. The efficiency of NER mostly depends on helix-distortion of DNA lesion. Therefore, increasing the helix-distortion by CPDs may enhance NER efficiency. We cloned VH and VL genes of anti-CPDs antibody and constructed a single-chain Fv (ScFv) containing C-terminal SV40 nulear localization signal. The binding affinity of the scFv for CPDs was significantly lower than that of original IgG. Then we constructed a Fab containing C-terminal SV40 NLS. It effectively bound to CPDs.
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