نتایج جستجو برای: tp53
تعداد نتایج: 8206 فیلتر نتایج به سال:
BACKGROUND TP53 defects, i.e., 17p13 deletion and/or nucleotide mutations, associate with short survival and chemorefractoriness in chronic lymphocytic leukemia (CLL). In this context, since direct sequencing of the TP53 gene does not evaluate TP53 functionality, a functional assessment of TP53 pathway may be of interest to identify high risk CLL. By taking advantage of a training cohort of 100...
Background: Molecular marker based cancer diagnosis gaining more attention in the current genomics era. So, Hspb1 and Tp53 gene characterization and their mRNA expression might be helpful in diagnosis andprognosis ofcat mammary adenocarcinoma. It will also add informationin comparative cancer genetics and genomics. Objectives: Eight tumors of Siamese cats were analyzed to ascertain germ-line an...
Gastric cancer (GC) is one of the leading causes of cancer mortality, worldwide. Molecular understanding of GC’s different subtypes is still dismal and it is necessary to develop new subtype-specific diagnostic and therapeutic approaches. Therefore developing comprehensive research in this area is demanding to have a deeper insight into molecular processes, underlying these subtypes. In this st...
PURPOSE To determine the nature and potential pharmacologic reversibility of deficient TP53 expression and function in head and neck squamous cell carcinomas (HNSCC) with wild-type TP53, previously associated with decreased sensitivity to cisplatin therapy. EXPERIMENTAL DESIGN TP53 genotype, mRNA and protein expression, TP53-induced p21 expression, and TP53 DNA-binding and reporter gene funct...
سرطان پوست یکی از شایع ترین انواع سرطان ها در سراسر جهان می باشد که بیش از 50% از تمام سرطان ها را شامل می شود. سه نوع اصلی سرطان پوست وجود دارد. فراوان ترین فرم آن، کارسینومای سلول پایه می باشد (bcc)، کارسینومای سلول پوششی (scc) و ملانوما (cmm) انواع دیگر آن می باشند. پرتو فرابنفش خورشید که منجر به آسیب dna می شود، مهم ترین فاکتور خطر برای تمام انواع سرطان پوست است. ژن tp53 یکی از ژن های کلیدی...
BACKGROUND Non-melanoma skin cancers are one of the most common human malignancies accounting for 2-3% of tumors in the US and represent a significant health burden. Epidemiology studies have implicated Tp53 mutations triggered by UV exposure, and human papilloma virus (HPV) infection to be significant causes of non-melanoma skin cancer. However, the relationship between Tp53 and cutaneous HPV ...
A number of TP53-MDM2 inhibitors are currently under investigation as therapeutic agents in a variety of clinical trials in patients with TP53 wild type tumors. Not all wild type TP53 tumors are sensitive to such inhibitors. In an attempt to improve selection of patients with TP53 wild type tumors, an mRNA expression signature based on 13 TP53 transcriptional target genes was recently developed...
TP53 Binding to BRCA1 and RAD51 in MCF7 and MDA-MB-468 Breast Cancer Cell Lines In vivo and In vitro
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 ...
TP53 mutations occur in half of all human tumours. Mutagen-induced or spontaneous TP53 mutagenesis can be studied in vitro using the human TP53 knock-in (Hupki) mouse embryo fibroblast (HUF) immortalisation assay (HIMA). TP53 mutations arise in up to 30% of mutagen-treated, immortalised HUFs; however, mutants are not identified until TP53 sequence analysis following immortalisation (2-5 months)...
Recent reports have indicated that KRAS and TP53 mutations predict response to therapy in colorectal cancer. However, little is known about the relationship between these two common genetic alterations. Micro-RNAs (miRNAs), a class of noncoding RNA implicated in cellular processes, have been increasingly linked to KRAS and TP53. We hypothesized that lethal-7a (let-7a) miRNA regulates KRAS throu...
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