Functional features of gene expression profiles differentiating gastrointestinal stromal tumours according to KIT mutations and expression.

ABSTRACT:

Background

Gastrointestinal stromal tumours (GISTs) represent a heterogeneous group of tumours of mesenchymal origin characterized by gain-of-function mutations in KIT or PDGFRA of the type III receptor tyrosine kinase family. Although mutations in either receptor are thought to drive an early oncogenic event through similar pathways, two previous studies reported the mutation-specific gene expression profiles. However, their further conclusions were rather discordant. To clarify the molecular characteristics of differentially expressed genes according to GIST receptor mutations, we combined microarray-based analysis with detailed functional annotations.

Methods

Total RNA was isolated from 29 frozen gastric GISTs and processed for hybridization on GENECHIP HG-U133 Plus 2.0 m

SUBMITTER: Ostrowski J 

PROVIDER: S-EPMC2794290 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature