Oncogenesis and the clinical significance of K-ras in pancreatic adenocarcinoma.
نویسندگان
چکیده
The RAS family genes encode small GTP-binding cytoplasmic proteins. Activated KRAS engages multiple effector pathways, notably the RAF-mitogen-activated protein kinase, phosphoinositide-3-kinase (PI3K) and RalGDS pathways. In the clinical field, K-ras oncogene activation is frequently found in human cancers and thus may serve as a potential diagnostic marker for cancer cells in circulation. This mini-review aims to summarise information on Ras-induced oncogenesis and the clinical significance of K-ras.
منابع مشابه
The Significance of Ras Activity in Pancreatic Cancer Initiation
The genetic landscape of pancreatic cancer shows nearly ubiquitous mutations of K-RAS. However, oncogenic K-Ras(mt) alone is not sufficient to lead to pancreatic ductal adenocarcinoma (PDAC) in either human or in genetically modified adult mouse models. Many stimulants, such as high fat diet, CCK, LPS, PGE2 and others, have physiological effects at low concentrations that are mediated in part t...
متن کاملDetection of c-K-ras mutations in fine needle aspirates from human pancreatic adenocarcinomas.
Formalin-fixed paraffin-embedded tissue specimens obtained by fine needle aspiration of pancreatic masses from 47 patients were examined retrospectively for cytology and the presence of mutant c-K-ras oncogenes. Point mutations of c-K-ras in codon 12 were detected by RNA-DNA RNAse A mismatch cleavage after in vitro DNA amplification of the cellular c-K-ras sequences by the polymerase chain reac...
متن کاملExocrine pancreatic adenocarcinoma in a toy breed dog
A 4-year-old female miniature pincher with a 40-day history of weight loss, lethargy and vomiting was referred to Small Animal Hospital, Faculty of Veterinary Medicine, University of Tehran. The case also had severe jaundice, chronic diarrhoea and steatorrhoea. The efforts for saving the life of the case were not successful and finally the animal died of hypovolaemic shock and electrolyte imbal...
متن کاملIER3 supports KRASG12D-dependent pancreatic cancer development by sustaining ERK1/2 phosphorylation.
Activating mutations in the KRAS oncogene are prevalent in pancreatic ductal adenocarcinoma (PDAC). We previously demonstrated that pancreatic intraepithelial neoplasia (PanIN) formation, which precedes malignant transformation, associates with the expression of immediate early response 3 (Ier3) as part of a prooncogenic transcriptional pathway. Here, we evaluated the role of IER3 in PanIN form...
متن کاملMutant K-RAS Promotes Invasion and Metastasis in Pancreatic Cancer Through GTPase Signaling Pathways
Pancreatic ductal adenocarcinoma is one of the most aggressive malignancies, characterized by the local invasion into surrounding tissues and early metastasis to distant organs. Oncogenic mutations of the K-RAS gene occur in more than 90% of human pancreatic cancers. The goal of this study was to investigate the functional significance and downstream effectors of mutant K-RAS oncogene in the pa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Asian Pacific journal of cancer prevention : APJCP
دوره 14 5 شماره
صفحات -
تاریخ انتشار 2013