P53 is a recognized tumor suppressor gene, which mainly depends on the activity of its transfer factor to realize effect. Mouse two-minute 2 (MDM2) an important inhibitor p53. When combined with MDM2, p53 will be reduced, and anti-cancer effect weakened. According mechanism between researchers focus inhibitors inhibit their binding. Through large number drug screening methods means, this articl...

A p53 yeast functional assay, which cannot only detect p53 gene mutations but also can assess p53 gene function, was used to screen for p53 gene dysfunction in human esophageal squamous cell carcinomas. Surgically resected frozen tissues of esophageal squamous cell carcinomas from 57 patients were examined for p53 gene mutation. Because the mean age of the patients diagnosed with esophageal squ...

Abstract. The p53 gene— “the guardian of the genome”—is responsible for maintaining integrity genome, along with cell cycle regulation, apoptosis, and differentiation. New analytical devices are needed to recognize main alterations this gene could suffer, since it is one most frequent in human cancer. For reason, we developed an electrochemical DNA biosensor high sensitivity specificity monitor...

Objective: This study aimed to explore ultrasound-guided injections of Ultrasound Contrast Agents (UCAs) and p53 gene for the treatment of rats with breast cancer. Methods: With the construction of p53 expression vector and rat model with breast cancer, 160 rats that modeled successfully were randomly divided into 4 groups: p53 gene introduction group, p53 gene introduction+ultrasound irradiati...

Objective(s) P53 is an important tumor suppressor, which is mutated in later stages of many cancers and leads to resistance to chemotherapy. The aim of this study was to reveal mutations of TP53 in colorectal cancer in Kerman province. Materials and Methods A total of Forty-three colon cancer specimens as paraffin block or fresh tissues, which passed stage IIIA, were selected. Three exons 5,...

biomolecular behavior of tumor cells has become attractive to investigators. p53 as an oncosuppresor gene has been core of various studies and ki67 is a nuclear protein involved in proliferation process. stopping of onco-suppressor function theoretically allows proliferative system to get out of any control. in this case-control study we evaluated 50 patients with non small cell lung cancer, co...

background:non-melanoma skin cancer (nmsc), the most prevalent types being squamous cell carcinoma (scc) and basal cell carcinoma (bcc), is the most common type of malignancy in human beings. these neoplasms are more frequent in the elderly and fair skinned people and mainly occur on sun-exposed sites of the body. ultraviolet b (uvb) has a well-known effect in induction and promotion of growth ...

The bax gene promoter region contains four motifs with homology to consensus p53-binding sites. In cotransfection assays using p53-deficient tumor cell lines, wild-type but not mutant p53 expression plasmids transactivated a reporter gene plasmid that utilized the bax gene promoter to drive transcription of chloramphenicol acetyltransferase. In addition, wild-type p53 transactivated reporter ge...

Evidence supporting a broad role for the inactivation of the p53 gene in human tumorigenesis has been provided by studies showing that the p53 gene is mutated in many human cancers. In this study, we report on the mutational status of the p53 gene in prostate cancer cells and provide functional evidence that the wild-type p53 gene may have a role in suppressing prostatic tumorigenesis. Sequence...