HOME >> BIOLOGY >> NEWS
Researchers discover why mutant gene causes colon cancer

Mutations in the adenomatous polyposis coli (APC) tumor suppressor gene have been found to cause 85 percent of colon cancers. Now researchers at the University of Utah's Huntsman Cancer Institute know why. In a paper published on-line Sept. 9 in the Journal of Biological Chemistry, they explain that APC controls the conversion of dietary vitamin A into retinoic acid. If this process is impaired, colon cancer can result.

"For a long time, scientists believed they knew what the APC gene did that it regulated cell growth and division but now we know we've been missing a big piece of the picture," reports David Jones, Ph.D., principal investigator of the study and leader of HCI's Colon Cancer Scientific Program. "What we didn't know was that it converts vitamin A into retinoic acid, which is vital for normal colon cell development."

Jones' lab had recently demonstrated that lack of retinoic acid, induced by mutating the APC gene, led to cancerous tumors in human colon cell lines. The new study blocked APC function in zebrafish and demonstrated that when the APC gene was blocked, the fish embryos lacked normal intestinal lining cells. When the embryos were treated with retinoic acid, normal cell development was restored. Because zebrafish and humans share many genes, including the APC gene, researchers often use the little black-and-white striped fish as models to study various aspects of human development.

"Implications of this study are far reaching," Jones says. "We have long suspected that vitamin A was helpful in preventing certain cancers, including colon cancer. With this new understanding, it may be possible to bypass a non-functioning APC gene by introducing retinoids as a form of chemoprevention, and thus control the undifferentiated and uncontrolled growth of colon cells that results in colon cancer."

Several years ago, University of Utah researchers identified the APC gene, as well as an inherited colon ca
'"/>


9-Sep-2004


Page: 1 2

Related biology news :

1. Researchers determine genetic cause of Timothy syndrome
2. Researchers find color sensitive atomic switch in bacteria
3. Researchers identify protein promoting vascular tumor growth
4. Researchers devise potent new tools to curb ivory poaching
5. Researchers create nanotubes that change colors, form nanocarpet and kill bacteria
6. Researchers ID chlorophyll-regulating gene
7. Researchers develop fast track way to discover how cells are regulated
8. Researchers identify distinctive signature for metastatic prostate cancer
9. Researchers report new gene test for isolated cleft lip and palate
10. Researchers identify the genomes controlling elements
11. Researchers improve detection of diverse anthrax strains

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/23/2017)... , Mar. 23, 2017 Research and Markets ... Market Analysis & Trends - Industry Forecast to 2025" report ... ... at a CAGR of around 8.8% over the next decade to ... report analyzes the market estimates and forecasts for all the given ...
(Date:3/20/2017)... Germany , March 20, 2017 At this ... Hamburg -based biometrics manufacturer DERMALOG. The Chancellor came to the DERMALOG ... is this year,s CeBIT partner country. At the largest German ... biometrics in use: fingerprint, face and iris recognition as well as DERMALOG´s ... ...
(Date:3/9/2017)... Australia , March 9, 2017 4Dx ... prestigious World Lung Imaging Workshop at the University of ... was invited to deliver the latest data to world ... recognised event brings together leaders at the forefront of ... in lung imaging. "The quality of ...
Breaking Biology News(10 mins):
(Date:4/20/2017)... ... April 20, 2017 , ... USDM Life Sciences , the leading ... healthcare industries, is pleased to announce Holger Braemer as Vice President of ... GmbH” based in Germany. , Braemer is an integral part of USDM’s expansion ...
(Date:4/20/2017)... ... April 20, 2017 , ... NetDimensions appoints Bill Mastin, a learning ... 20 years of experience in the learning technologies industry, Mastin joins NetDimensions from the ... Technologies Group plc (LTG). At LEO, Mastin served as SVP of the North America ...
(Date:4/20/2017)... ... 2017 , ... Energetiq Technology , a world leader ... Executive Officer (CEO) Debbie Gustafson has been appointed to the SEMI North America ... the electronics manufacturing supply chain. The mission of the SEMI NAAB is to ...
(Date:4/20/2017)... ... April 20, 2017 , ... Open Therapeutics and ... (IP) sharing and commercialization model. , The Center for Advancing Innovation helps institutions ... this effort is bringing the IP to the attention of the entrepreneurial community ...
Breaking Biology Technology:
Cached News: