Navigation Links
Newly Discovered Compound Blocks Known Cancer-Causing Protein

of the cell, but mutations in the gene can cause it to become stuck in an "on" position, promoting uncontrolled cell growth. Mutations in Ras that permanently activate it have been found in half of all colon cancer and 90 percent of pancreatic cancers, among other cancers.

Casey and his colleagues in Duke's Department of Pharmacology and Cancer Biology have already discovered and developed another class of cancer drugs aimed at inhibiting the processing pathway --the prenylation pathway ?that regulates Ras.

Several years ago, Casey's laboratory was one of a handful to unravel how the prenylation pathway works. This accomplishment led pharmaceutical companies to test compounds that block another key player in the pathway, a protein called farnesyltransferase. Blocking this protein inhibits Ras' ability to send growth-promoting signals inside cells. Several such compounds have shown promise in treating leukemias and lymphomas and are now under consideration for final approval by the U.S. Food and Drug Administration.

Since that time, Casey and his colleagues have been studying another key player in the pathway, the Icmt enzyme. Icmt adds a chemical tag called a "methyl group" to Ras. This methyl tag enables Ras to be directed to its final destination in the cell, from where it can send signals for unchecked growth.

"Ras needs to be at the plasma membrane in order to function," he said. "By preventing Icmt from adding a methyl group, we can effectively shut down Ras' ability to function, stopping it from sending signals for uncontrolled growth."

Initial experiments showed that knocking out the Icmt protein using genetic targeting also inhibited Ras, so the scientists decided to search for an effective and specific molecule that could inhibit Icmt function.

"We were looking for a small molecule that inhibited this enzyme specifically, without interfering with the normal regulation of the cell," said Casey. "What we found
'"/>

Source:DukeMedNews


Page: 1 2 3

Related biology news :

1. Newly-discovered class of genes determines ?and restricts ?stem cell fate
2. Newly discovered virus linked to childhood lung disorders and Kawasaki disease
3. Newly discovered pathway might help in design of cancer drugs
4. Newly Discovered Branding Process Helps Immune System Cells Pick Their Fights
5. Newly discovered protein an important tool for sleeping sickness research
6. Newly discovered genetic disease sheds light on bodys water balance
7. Newly Discovered Role for Heart Response Enzyme May Yield Better Heart Failure Therapy
8. Newly recognized gene mutation may reduce seeds, resurrect plants
9. Newly discovered birdlike dinosaur is oldest raptor ever found in South America
10. Fitting in: Newly evolved genes adopt a variety of strategies to remain in the gene pool
11. Newly identified mechanism helps explain why people of African descent are more vulnerable to TB
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Newly Discovered Compound Blocks Known Cancer Causing Protein

(Date:1/22/2015)... and POINT ROBERTS, Washington , January ... covering leading sectors including technology and tech stocks, releases video ... featuring master pickpocket and security consultant Apollo Robbins . ... and talks about the Wocket™ biometric smart wallet, a product ...
(Date:1/22/2015)... Jan. 22, 2015 Infinisource has launched its new NXG ... model. The G2 sets a higher standard for collecting attendance ... management solution. With plug-and-play installation, touch screen interface and seamless ... a robust time collection solution for the small to mid-size ...
(Date:12/19/2014)... and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ) has announced ... - Apple/AuthenTec TMDR92 & Sapphire - Technology Report" ... http://photos.prnewswire.com/prnh/20130307/600769 Following the acquisition of AuthenTec ... with the iPhone 5S. It is currently the only ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
... Down syndrome (DS) is the most common genetic disorder ... a chromosomal abnormality. It occurs as a result of ... usual two. It causes substantial physical and behavioral abnormalities, ... to severe but which further deteriorates as individuals with ...
... Tropical Research Institute and University of Costa Rica asked ... webs. Repeating old, widely quoted but poorly documented studies ... legs are protected by a covering of branching hairs ... published online in the journal, Naturwissenschaften . , ...
... in size over time, they haven,t necessarily grown in ... according to a recently published study appearing in the ... scientists from the USDA Forest Service and the University ... of wildfires on four national forestsKlamath, Mendocino, Shasta-Trinity and ...
Cached Biology News:Understanding and treating the cognitive dysfunction of Down syndrome and Alzheimer's disease 2Study of wildfire trends in Northwestern California shows no increase in severity over time 2
(Date:1/22/2015)... 22, 2015 Diagenode, Inc., a ... the Bioruptor® and complete solutions for epigenetics research, ... immunoprecipitation, alleviating the need for manual processing. The ... for ChIP of histones or transcription factors and ...
(Date:1/22/2015)... 22, 2015  Derma Sciences, Inc. (Nasdaq: ... advanced wound care, announces that AMNIOEXCEL® and AMNIOMATRIX®, ... added to the Premier, Inc. Regenerative Skin Grafting ... the AMNIOEXCEL® and AMNIOMATRIX® product lines, which continue ...
(Date:12/24/2014)... , Dec. 24, 2014   BioLife Solutions , Inc. ... marketer of proprietary clinical grade hypothermic storage and ... products for cells and tissues  ("BioLife" or the "Company"), ... of Stockholders on May 4, 2015 (the "Annual Meeting"). ...
(Date:12/24/2014)... 23, 2014 On Friday, December 19, ... Omnibus and Continuing Resolution Appropriations Act of 2015, which ... to receive funding through the Congressionally Directed Medical Research ... The Hydrocephalus Association (HA), working in conjunction with its ...
Breaking Biology Technology:Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5BioLife Solutions Sets Date for Annual Meeting of Stockholders 2Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2
... - Before Congress takes its traditional August break, the ... human embryonic stem cell research. Let's hope a scientifically sound ... as Wisconsin follow the lead. , ,Just as Republicans in ... are GOP leaders in Washington, where President Bush suffered a ...
... Companies that are trying to justify RFID investment wholly ... efficiencies, and shrinkage in their supply chain are merely ... significant opportunities in these areas, it means that gross ... can achieve major improvements even without applying RFID. , ...
... MILWAUKEE - A group of business and technology ... $2.6 million in pledged state funds for the ... collaboration between academic researchers and private industry in southeastern ... Finance Committee by a margin of 15-1, and endorsed ...
Cached Biology Technology:Stem cell debate in Washington grows hotter as summer recess nears 2Stem cell debate in Washington grows hotter as summer recess nears 3The key to finding RFID's ROI 2The key to finding RFID's ROI 3The key to finding RFID's ROI 4Budget axe could cut SE Wisconsin tech alliance funding 2Budget axe could cut SE Wisconsin tech alliance funding 3