The interplay between homologous DNA recombination and mitotic progression is poorly understood. The five RAD51 paralogs (RAD51B, RAD51C, RAD51D, XRCC2 and XRCC3) are key enzymes for DNA double-strand break repair. In our search for specific functions of the various RAD51 paralogs, we found that inhibition of XRCC3 elicits checkpoint defects, while inhibition of RAD51B or RAD51C induces G2/M ce...

AIM Genetic polymorphism in XRCC1 and XRCC3 genes may influence DNA repair capacity and, in turn, confer predisposition to breast cancer. MATERIAL AND METHODS In the present work the distribution of genotypes and frequency of alleles of the Arg194Trp and Arg399Gln polymorphism of XRCC1 and Trp241 Met polymorphism in XRCC3 in breast cancer women were analysed. Blood samples were obtained from ...

The study utilized molecular-genetic, cytogenetic, and statistical analyzes methods. A cytogenetic molecular genetic analysis of the inhabitants villages Amangeldy, Belbulak, in whose territory warehouses unused pesticides are located, was carried out. Residents Basshi village, on which there no products disposal pesticides, were taken as control. Cytogenetic showed a high level chromosomal abe...

among the lesions induced by chemotherapeutic drugs, dna double-strand breaks (dsb) are considered the most serious ones that can result in cell death, if it is not properly repaired. homologous recombination (hr) pathway is the main system for dsb repair and xrcc3 has a key role in this pathway. protein activity can be affected by the xrcc3 polymorphism. thus, in this study, the association be...

Background: The x-ray repair cross-complementing group 3 (XRCC3) encodes a protein involved in the homologous recombination repair (HRR) pathway for double-strand DNA repair. Associations of the XRCC3 Thr241Met polymorphism with various cancers have been widely reported. However, published data on links between XRCC3 Thr241Met and gastrointestinal (GI) cancer risk are inconsistent. Objective an...

Regular aspirin intake is associated with a reduction in the incidence of colorectal cancer. Aspirin has been shown to be cytotoxic to colorectal cancer cells in vitro. The molecular basis for this cytotoxicity is controversial, with a number of competing hypotheses in circulation. One suggestion is that the protective effect is related to the induction of expression of the DNA mismatch repair ...

BACKGROUND To evaluate the role of the X-ray repair cross complementing group 3 (XRCC3) T241M polymorphism in head and neck cancer susceptibility. MATERIALS AND METHODS We performed a meta-analysis of all available studies, which included 3,191 cases and 5,090 controls. RESULTS Overall, a significant risk effect of the T241M polymorphism was not found under homologous contrast (MM vs TT: OR...

Several polymorphisms in DNA repair genes have been reported to be associated with lung cancer risk including XPA (-4G/A), XPD (Lys751Gln and Asp312Asn), XRCC1 (Arg399Gln), APE1 (Asp148Glu) and XRCC3 (Thr241Met). As there is little information on the combined effects of these variants, polymorphisms were analyzed in a case-control study including 463 lung cancer cases [among them 204 adenocarci...

We studied the prevalence of polymorphisms in genes XRCC2 and XRCC3 in stomach cancer patients who lived in North Eastern Turkey. A total of 61 cancer patients and 78 controls were included in this study. Single nucleotide changes were studied in XRCC2 and XRCC3 genes at locus Arg188His and Thr241Met. Blood samples were taken from the patients and controls, and DNA was isolated. The regions of ...