نتایج جستجو برای: tp53 mutation and expression
تعداد نتایج: 16973495 فیلتر نتایج به سال:
Although it is known that chronic hepatitis C virus (HCV) infection may contribute to tumor initiation and development, the molecular processes causing hepatocellular carcinoma (HCC) remain unclear. Microindels are unique, infrequent mutations that result in inserted and deleted sequences at the same nucleotide position, and are important contributors to cancer. To date, microindels in the p53 ...
OBJECTIVE In undifferentiated-type gastric carcinoma (UGC), inactivation of TP53 is infrequent at early stages and comparable to tubular adenocarcinomas (TUBs) at advanced stages. To clarify how TP53 inactivation relates to histogenesis of UGCs, we examined p53 alterations in multiple samples of individual UGCs. METHODS We used 27 UGCs including 12 mixed types with minor tubular component (TC...
Mutation of the tumor suppressor p53 plays a major role in human carcinogenesis. Here we describe gene-targeted porcine mesenchymal stem cells (MSCs) and live pigs carrying a latent TP53(R167H) mutant allele, orthologous to oncogenic human mutant TP53(R175H) and mouse Trp53(R172H), that can be activated by Cre recombination. MSCs carrying the latent TP53(R167H) mutant allele were analyzed in vi...
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,...
BACKGROUND Li-Fraumeni syndrome (LFS) is a rare autosomal dominant cancer predisposition syndrome. Most families fulfilling the classical diagnostic criteria harbour TP53 germline mutations. However, TP53 germline mutations may also occur in less obvious phenotypes. As a result, different criteria are in use to decide which patients qualify for TP53 mutation analysis, including the LFS, Li-Frau...
Li-Fraumeni syndrome (LFS) is a rare, autosomal dominant, hereditary cancer predisposition disorder. In Brazil, the p.R337H TP53 founder mutation causes the variant form of LFS, Li-Fraumeni-like syndrome. The occurrence of cancer and age of disease onset are known to vary, even in patients carrying the same mutation, and several mechanisms such as genetic and epigenetic alterations may be invol...
Cooperative dysregulation of gene sequence and expression may contribute to cancer formation and progression. The Cancer Genome Atlas (TCGA) Network recently catalogued gene sequence and expression data for a collection of glioblastoma multiforme (GBM) tumors. We developed an automated, model-free method to rapidly and exhaustively examine the correlation among somatic mutation and gene express...
In the United States, breast cancer is the second leading cause of cancer death in women. Over the past 20 years, breast cancer incidence and mortality rates increased rapidly in developing regions. We aimed to identify the gene mutation patterns that associated with the clinical patterns, including survival status, histo-pathological classes and so forth, of breast cancer. We retrieved 1098 ca...
We have shown that prostate cancer occurring in men with germline BRCA1 and BRCA2 mutations is more aggressive. In an attempt to identify an associated immunohistochemical phenotype, we have studied TP53 immunostaining in prostate cancers in mutation carriers versus prostate cancers occurring in a control group of men. There was a significantly higher expression of TP53 protein in prostate canc...
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