1998
DOI: 10.1038/sj.onc.1201872
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Genetic polymorphisms and alternative splicing of the hOGG1 gene, that is involved in the repair of 8-hydroxyguanine in damaged DNA

Abstract: The hOGG1 gene encodes a DNA glycosylase that excises 8-hydroxyguanine (oh 8 Gua) from damaged DNA. Structural analyses of the hOGG1 gene and its transcripts were performed in normal and lung cancer cells. Due to a genetic polymorphism at codon 326, hOGG1-Ser 326 and hOGG1-Cys 326 proteins were produced in human cells. Activity in the repair of oh 8 Gua was greater in hOGG1-Ser 326 protein than in hOGG1-Cys 326 protein in the complementation assay of an E. coli mutant defective in the repair of oh 8 Gua. Two i… Show more

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Cited by 386 publications
(318 citation statements)
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References 24 publications
(38 reference statements)
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“…23 However, it remains unclear whether the codon 326 polymorphism influences hOGG1 enzyme activity. Kohno et al 37 showed that the hOGG1 326Ser protein had substantially higher DNA repair activity than the 326Cys variant in an in vitro bacterial complementation activity assay. However, another detailed biochemical study showed that both the purified hOGG1 326Ser and hOGG1 326Cys proteins did not differ appreciably in their enzymatic activities or in their capacity to reduce the frequency of induced mutations in an E. coli strain defective in the repair of 8-OH-G. 38 Similarly, Janssen et al 39 also evaluated OGG1 activity in an 8-oxoG oligonucleotide assay and showed no difference in enzyme activity due to the codon 326 polymorphism.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…23 However, it remains unclear whether the codon 326 polymorphism influences hOGG1 enzyme activity. Kohno et al 37 showed that the hOGG1 326Ser protein had substantially higher DNA repair activity than the 326Cys variant in an in vitro bacterial complementation activity assay. However, another detailed biochemical study showed that both the purified hOGG1 326Ser and hOGG1 326Cys proteins did not differ appreciably in their enzymatic activities or in their capacity to reduce the frequency of induced mutations in an E. coli strain defective in the repair of 8-OH-G. 38 Similarly, Janssen et al 39 also evaluated OGG1 activity in an 8-oxoG oligonucleotide assay and showed no difference in enzyme activity due to the codon 326 polymorphism.…”
Section: Discussionmentioning
confidence: 99%
“…In contrast, 3 studies have not demonstrated a significant association between the hOGG1 codon 326 polymorphism and lung cancer risk. 28,29,37 However, only one of these studies (Kohno et al 37 ) was adequately powered to identify an effect among Cys/Cys (n ϭ 38) homozygotes. In a recent review of DNA repair gene polymorphisms in human cancer, the hOGG1 codon 326 polymorphism was 1 of 3 gene polymorphisms associated with an effect on human cancer risk.…”
Section: Discussionmentioning
confidence: 99%
“…Among the 65 papers identified through this process, 7 were considered eligible. 5,[7][8][9][10][11]17 Two investigators (TO and KM) abstracted the data independently. We used OR from a random-effect model as a summary statistic for association.…”
Section: Meta-analysismentioning
confidence: 99%
“…4 Genetic polymorphisms of hOGG1 have been documented, and the polymorphism Ser326Cys (rs1052133) is associated with complementation activity for Escherichia coli mutants that are defective in the repair of 8-hydroxyguanine. Activity in the repair of 8-hydroxyguanine is greater with the hOGG1-Ser326 protein than the hOGG1-Cys326 protein, 5 and the possible contribution of this locus to the risk of a variety of human cancers has been reported. 6 A number of studies [7][8][9][10][11][12][13][14] and systematic approaches [15][16][17] have examined the role of the Ser326Cys polymorphism in lung cancer susceptibility.…”
Section: Introductionmentioning
confidence: 99%
“…Mutation screening of the full seven exons of TGF-bRII gene was also performed by PCR-SSCP analysis (Lu et al, 1996). For mutational analysis of hOGG1 gene, PCR primer pairs and conditions were described previously (Kohno et al, 1998).…”
Section: Cell Culturementioning
confidence: 99%