Related Experiment Video
Updated: Jul 7, 2026

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells
Published on: April 7, 2017
erbB-2 gene expression in colorectal cancer
G J Tsioulias1, T Muto, Y Morioka
11st Department of Surgery, Faculty of Medicine, University of Tokyo, Japan.
Abstract:
The expression of the erbB-2 gene product was studied immunohistochemically on 38 normal colonic mucosae, 14 adenomas and 44 colon cancers, with the use of two anti-erbB-2 antibodies, a rabbit polyclonal antibody specific for the intracellular domain and a mouse monoclonal antibody specific for the extracellular domain. Normal mucosae and adenomas were not stained. Five cases (11%) of colon cancer were positive with the polyclonal anti-erbB-2 antibody, while only one case was positive with the monoclonal antibody. Most of the positive cases were in Dukes C stage. The rare overexpression of the erbB-2 protein in colon cancer seems to indicate a minor role for the gene in colorectal tumorigenesis.
Related Concept Videos
Mitogens and the Cell Cycle
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal

