نتایج جستجو برای: p53 genes
تعداد نتایج: 459506 فیلتر نتایج به سال:
Mutant p53 impacts the expression of numerous genes at the level of transcription to mediate oncogenesis. We identified vascular endothelial growth factor receptor 2 (VEGFR2), the primary functional VEGF receptor that mediates endothelial cell vascularization, as a mutant p53 transcriptional target in multiple breast cancer cell lines. Up-regulation of VEGFR2 mediates the role of mutant p53 in ...
Chemotherapy induces apoptosis and tumor regression primarily through activation of p53-mediated transcription. Neuroblastoma is a p53 wild type malignancy at diagnosis and repression of p53 signaling plays an important role in its pathogenesis. Recently developed small molecule inhibitors of the MDM2-p53 interaction are able to overcome this repression and potently activate p53 dependent apopt...
Tumor suppressor p53 plays a pivotal role in tumor suppression. p53 is the most frequently mutated gene in cancer. As a transcription factor, p53 mainly exerts its role in tumor suppression through transcriptional regulation of its downstream target genes. Thus, p53 and its target genes form a complex p53 signaling pathway to regulate a wide variety of biological processes to prevent tumorigene...
Objective: Phenolic compounds have been considered inhibitors of various cancers. Material and Methods: In this study, caffeic acid and gallic acid were appraised for their possible effects on apoptotic genes expression in a breast cancer cell line in vitro. We also evaluated ligand interaction and ligand binding with estrogen receptor alpha by m...
Background & Aims: Ovarian cancer is the third most common cancer in women. Artemisia is one of the most commonly used medicinal plants, and Artemisia absinthium is one of the important species of this genus. The aim of this study was to evaluate the effect of cytotoxicity and the ability to induce apoptosis methanolic extract of A. absinthium in A2780 cell line (human ovarian cancer). Materia...
Introduction: Pancreatic cancer is one of the deadliest cancers of the digestive system in the world. Due to the increasing resistance of cancer cells to chemotherapy and its side effects, there is a need for drugs with fewer side effects and natural origin. Methods: In this study, the effect of harmine and its concomitant use with fluorouracil to induce apoptosis in pancreatic cancer cells, A...
Human U1 and U6 snRNA genes are transcribed by RNA polymerases II and III, respectively. While the p53 tumor suppressor protein is a general repressor of RNA polymerase III transcription, whether p53 regulates snRNA gene transcription by RNA polymerase II is uncertain. The data presented herein indicate that p53 is an effective repressor of snRNA gene transcription by both polymerases. Both U1 ...
Biomarkers for patient selection are essential for the successful and rapid development of emerging targeted anti-cancer therapeutics. In this study, we report the discovery of a novel patient selection strategy for the p53-HDM2 inhibitor NVP-CGM097, currently under evaluation in clinical trials. By intersecting high-throughput cell line sensitivity data with genomic data, we have identified a ...
Cellular senescence is defined as permanent cell cycle arrest induced by various stresses. Although the p53 transcriptional activity is essential for senescence induction, the downstream genes that are crucial for senescence remain unsolved. Here, by using a developed experimental system in which cellular senescence or apoptosis is induced preferentially by altering concentration of etoposide, ...
conclusions the study results showed that p53 expression increased in im, dys and gc cases with h. pylori infection compared to those without h. pylori infection. the results also suggested that, ki-67 expression was different in precancerous stages of gastric carcinogenesis, based on the infection with h. pylori. background helicobacter pylori (h. pylori) infection is considered as a carcinoge...
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