Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A new way to treat colon cancer?

11.10.2006
Possible new drug still is three to five years away

Researchers at University of Utah's Huntsman Cancer Institute have discovered a new target for possible future colon cancer treatments – a molecule that is implicated in 85 percent of colon cancer cases.

These findings were published online Oct. 6, 2006, in the Journal of Biological Chemistry.

By knocking out – that is, genetically disabling – a molecule called C-Terminal Binding Protein (CTBP) researchers were able to rescue zebrafish from the effects of a mutation in the adenomatous polyposis coli (APC) gene.

... more about:
»APC »CtBP »Mutation »colon cancer »retinoic

In humans, mutations in this gene long have been known to initiate a series of events that cause colon polyps, which eventually become cancerous. APC mutations play a role in 85 percent of colon cancers. The new findings mean CTBP also is involved in that proportion of colon cancers.

In zebrafish, APC mutations keep the intestine from developing properly. "In essence, knocking out CTPB promotes normal development of the intestine in zebrafish carrying an APC mutation," says David A. Jones, a University of Utah associate professor of oncological sciences and leader of the study.

In normal cells of both humans and zebrafish, the APC gene controls the amount of CTBP present by marking it for destruction. In tumor cells with mutated APC, CTPB is not destroyed; instead it accumulates in the cell.

One function of CTBP is to turn off the process that converts vitamin A into retinoic acid in the cell. Retinoic acid is essential in cell differentiation – the function that determines what type of cell forms and how long it lives. This study observed that in both zebrafish and human tissues with APC mutations, there are high CTBP levels and low capability to produce retinoic acid. In APC-mutated tissues in which CTBP had been "knocked out," retinoic acid production was restored.

Earlier studies in Jones' lab showed that lack of retinoic acid caused zebrafish intestines to form incorrectly, and that adding retinoic acid corrected the problems.

"Knocking out CTBP does exactly the same thing, and the logical conclusion is that it's because CTBP controls retinoic acid production," says Jones. "Since CTBP is a completely new target, we must now look for potential chemical agents that would work to block its actions. That could take three to five years."

Linda Aagard | EurekAlert!
Further information:
http://www.hci.utah.edu

Further reports about: APC CtBP Mutation colon cancer retinoic

More articles from Life Sciences:

nachricht Lethal combination: Drug cocktail turns off the juice to cancer cells
12.12.2018 | Universität Basel

nachricht Smelling the forest – not the trees
12.12.2018 | Universität Konstanz

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

Im Focus: Researchers develop method to transfer entire 2D circuits to any smooth surface

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.

Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...

Im Focus: Three components on one chip

Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.

Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

New discoveries predict ability to forecast dementia from single molecule

12.12.2018 | Health and Medicine

CCNY-Yale researchers make shape shifting cell breakthrough

12.12.2018 | Physics and Astronomy

Pain: Perception and motor impulses arise in the brain independently of one another

12.12.2018 | Health and Medicine

VideoLinks
Science & Research
Overview of more VideoLinks >>>