RGD Reference Report - Genetic polymorphisms in OGG1 and their association with angiomyolipoma, a benign kidney tumor in patients with tuberous sclerosis. - Rat Genome Database

Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

Genetic polymorphisms in OGG1 and their association with angiomyolipoma, a benign kidney tumor in patients with tuberous sclerosis.

Authors: Habib, SL  Danial, E  Nath, S  Schneider, J  Jenkinson, CP  Duggirala, R  Abboud, HE  Thameem, F 
Citation: Habib SL, etal., Cancer Biol Ther. 2008 Jan;7(1):23-7. Epub 2007 Oct 8.
RGD ID: 8657155
Pubmed: (View Article at PubMed) PMID:17932460

The enzyme 8-oxoguanine glycosylase 1 (OGG1) repairs 8-oxo-2-deoxyguanosine residue (8-oxodG) an oxidatively damaged promutagenic base. Genetic variations in OGG1 gene have been shown to modulate DNA repair capacity and are related risk of tumor development. However, epidemiologic findings have been inconsistent. The purpose of this study is to determine whether genetic variants in OGG1 play a role in susceptibility to angiomyolipoma, a benign kidney tumor associated with tuberous sclerosis complex (TSC) patients. To identify genetic variations, all seven exons of the OGG1 gene were amplified by PCR and sequenced in 22 TSC patients with angiomyolipoma (cases) and 18 controls. By direct sequencing, we identified four missense mutations in OGG1: Arg(45)Gln, Ala(85)Ser, Arg(229)Gln and Ser(326)Cys. Genotypic association with angiomyolipoma was performed using the measured genotype approach as implemented in the variance component analytical tools. Association analysis showed the presence of significant association (p = 0.01) only between the Ser(326)Cys polymorphism of OGG1 and angiomyolipoma. We also assessed the presence of oxidative DNA damage in kidney section from normal healthy subjects, normal kidney tissue from TSC patients and kidney angiomyolipoma tissue from TSC patients by immunostaining for 8-oxodG. 8-OxodG staining was highly abundant in kidney angiomyolipoma tissue from TSC patients compared to weak staining in uninvolved tissue from the same TSC patients or normal kidney from healthy subjects. Taken together, our findings suggest that Ser(326)Cys variant of OGG1 may confer risk for development of angiomyolipomas by increasing oxidative DNA damage.

Annotation

Disease Annotations    
angiomyolipoma  (IAGP,ISO)

Objects Annotated

Genes (Rattus norvegicus)
Ogg1  (8-oxoguanine DNA glycosylase)

Genes (Mus musculus)
Ogg1  (8-oxoguanine DNA-glycosylase 1)

Genes (Homo sapiens)
OGG1  (8-oxoguanine DNA glycosylase)


Additional Information