Background: Rad51 is a protein with critical role in double strand break repair. Down-regulation of this protein has a significant effect in radiosensitivity of some cell lines like prostate carcinoma. Compared to monolayer cell culture model, the spheroids are more resistant to radiation. The aim of the current study was to determine the Rad51 protein level in DU145 spheroids, and monol...

background: rad51 is a protein with critical role in double strand break repair. down-regulation of this protein has a significant effect in radiosensitivity of some cell lines like prostate carcinoma. compared to monolayer cell culture model, the spheroids are more resistant to radiation. the aim of the current study was to determine the rad51 protein level in du145 spheroids, and monolayer ce...

background: tumour suppressor genes such as tp53, brca1 and rad51 are involved in dna repair and their malfunctions result in genomic instability and cancer. wild type (wt) tp53 binds to brca1and rad51 in vivo and in vitro. however, mutated tp53 in tumours can interfere with wt tp53 function. we studied how mutation of tp53 in mda-mb-468 cell line could affect its binding capacity and interfere...

Background: Overexpression of Rad51 protein in many tumor cells has been proven to increase radioresistance and can be related to the resistance of chemosensitivity of tumor cells. This preliminary study was conducted to determine the relationship between the Rad51 expression level in nasopharyngeal carcinoma and the response of the treatment based on the measurement o...

background: overexpression of rad51 protein in many tumor cells has been proven to increase radioresistance and can be related to the resistance of chemosensitivity of tumor cells. this preliminary study was conducted to determine the relationship between the rad51 expression level in nasopharyngeal carcinoma and the response of the treatment based on the measurement of the tumor reduction. met...

Rad51 is essential for efficient repair of DNA double-strand breaks (DSBs) and recombination in Saccharomyces cerevisiae. Here, we examine Rad51 protein-protein interactions and their biological significance. GAL4 two-hybrid fusion analysis demonstrated that the amino-terminal region of Rad51 mediates both a strong Rad51:Rad51 self-association and a Rad51:Rad52 interaction. Several Rad51 varian...

Poly ADP-ribose polymerase inhibitors (PARPi) have revolutionized the treatment of high grade serous ovarian carcinoma (HGSOC), especially those harbouring BRCA1/2 mutations. Emerging preclinical evidence suggest a potential relationship between BRCA specific-domain defects and sensitivity to PARPi. In particular, ring-less BRCA1 protein, characterized by residual activity in RAD51 foci formati...

Gefitinib (Iressa, ZD1839) is a selective epidermal growth factor receptor tyrosine kinase inhibitor that can block growth factor-mediated cell proliferation and extracellular signal-regulated kinases 1/2 (ERK1/2) activation. High-level Rad51 expression has been reported in chemoresistant or radioresistant carcinomas. In this study, we examined the role of Rad51 in regulating the response to ge...

The Rad51 protein from the methylotrophic yeast Pichia angusta (Rad51(Pa)) of the taxonomic complex Hansenula polymorpha is a homolog of the RecA-RadA-Rad51 protein superfamily, which promotes homologous recombination and recombination repair in prokaryotes and eukaryotes. We cloned the RAD51 gene from the cDNA library of the thermotolerant P. angusta strain BKM Y1397. Induction of this gene in...

Recombination is important for the repair of DNA damage and for chromosome segregation during meiosis; it has also been shown to participate in the regulation of cell proliferation. In the yeast Saccharomyces cerevisiae, recombination requires products of the RAD52 epistasis group. The Rad51 protein associates with the Rad51, Rad52, Rad54, and Rad55 proteins to form a dynamic complex. We descri...