نتایج جستجو برای: brca2
تعداد نتایج: 4162 فیلتر نتایج به سال:
مقدمه: جهشهای ژنی BRCA1 و BRCA2 در سلولهای رده زایا، باعث خطر ابتلاء به سرطان پستان و تخمدان میشوند. ژنهای BRCA1 و BRCA2، عامل 20% از موارد سرطان پستان ارثی هستند. اکثریت جهشهای موجود در ژنهای BRCA1 و BRCA2 باعث اتمام زودرس پروتئین میشوند. مطالعه حاضر با هدف بررسی نقش جهشهای BRCA1/2 در ابتلاء به سرطان پستان و معرفی برخی جهشهای مرتبط با این ژنها انجام شد. روش‌کار: در این مطالعه مروری س...
Background and purpose: Breast Cancer is one of the health problems in every population. The aim of this study was to determine the frequency of BRCA1 and BRCA2 common mutations in women whose mothers were diagnosed with breast cancer. Materials and methods: A case–control study was performed in 109 females (less than 40 years of age) who had mothers with breast cancer. For scanning of...
background ovarian cancer is the most common fatal gynecologic malignancy in women. the brca2 gene has a role in regulation of cell cycle during proliferation, differentiation and dna repair. changes in the methylation of brca2 may be an effective mechanism for ovarian cancer. objectives the aim of the present study was to evaluate the association between ovarian cancer and methylation status o...
BRCA1, BRCA2, and PALB2 are key players in cellular tolerance to chemotherapeutic agents, including camptothecin, cisplatin, and PARP inhibitor. The N-terminal segment of BRCA2 interacts with PALB2, thus contributing to the formation of the BRCA1-PALB2-BRCA2 complex. To understand the role played by BRCA2 in this complex, we deleted its N-terminal segment and generated BRCA2(Δ)(N) mutant cells....
BACKGROUND Inherited mutations in the tumour suppressor gene BRCA2 greatly increase the risk of developing breast, ovarian and other types of cancers. So far, most studies have focused on the role of BRCA-pathways in the maintenance of genomic stability. In this study we investigated the potential role of the BRCA2 protein in cytokinesis in unmodified primary human fibroblast carrying a heteroz...
مقدمه: جهشهای ژنی brca1 و brca2 در سلولهای رده زایا، باعث خطر ابتلاء به سرطان پستان و تخمدان میشوند. ژنهای brca1 و brca2، عامل 20% از موارد سرطان پستان ارثی هستند. اکثریت جهشهای موجود در ژنهای brca1 و brca2 باعث اتمام زودرس پروتئین میشوند. مطالعه حاضر با هدف بررسی نقش جهشهای brca1/2 در ابتلاء به سرطان پستان و معرفی برخی جهشهای مرتبط با این ژنها انجام شد. روش کار: در این مطالعه مروری س...
BACKGROUND Although BRCA1 and BRCA2 play important roles in hereditary ovarian cancers, the extent of their role in sporadic ovarian cancers and their mechanisms of inactivation are not yet well understood. Our goal was to characterize BRCA2 mutations and mRNA expression in a group of ovarian tumors previously evaluated for BRCA1 mutations and mRNA expression. METHODS The tumors of 92 unrelat...
Poly (ADP-ribose) polymerase (PARP) inhibitor (PARPi) olaparib has been approved for treatment of advanced ovarian cancer associated with BRCA1 and BRCA2 mutations. BRCA1- and BRCA2-mutated cells, which are homologous recombination (HR) deficient, are hypersensitive to PARPi through the mechanism of synthetic lethality. Here we examine the effect of PARPi on HR-proficient cells. Olaparib pretre...
Acquired platinum resistance is a serious problem in the treatment of ovarian carcinomas. However, the mechanism of the drug resistance has not been elucidated. Here, we show functional significance of restoration of BRCA2 protein by secondary BRCA2 mutations in acquired drug resistance of BRCA2-mutated ovarian carcinoma. Three ovarian cancer cell lines (PEO1, PEO4, and PEO6) were derived from ...
Background: Breast cancer is the most common female malignancy and the main cause of death in mid-aged women. Genetic germ line mutations in BRCAI/BRCA2 in Iranian women with breast or ovarian cancer have not been yet reported. Materials and methods: Clinical data, family history and blood samples were obtained from 83 females aged less than 45 years with primary breast cancer in order to su...
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