HOME >> BIOLOGY >> NEWS
University Of Pittsburgh Scientist Discovers How A Novel Vitamin K Stops Cancer Cell Growth

PITTSBURGH, June 1 -- Scientists at the University of Pittsburgh have discovered how a novel form of vitamin K exerts its cancer-killing effects in primary liver cancers, which are notoriously resistant to chemotherapy. The research results, published in the May issue of The Journal of Biological Chemistry, describe an important new way to treat, and possibly prevent, cancer by triggering programmed cell death.

"Our finding is extremely important if we are to maximize the use of vitamin K compounds against cancer," noted Brian Carr, M.D., Ph.D., FRCP, professor of surgery in the Thomas E. Starzl Transplantation Institute and director of the Liver Cancer Center at the University of Pittsburgh Cancer Institute (UPCI). "Through our ongoing research, we now know that the vitamin K compounds not only can kill liver cancers, but also can destroy other types of cancer in tissue cultures, including breast cancer and melanoma. They do so by a quite novel growth-regulating mechanism."

"One of the attractive features of this unique compound is that it appears to stop cancer cell growth without producing toxicity. We now are testing this compound against cancers in rats, and given positive results, we hope to begin clinical trials of this agent within two years."

The Pitt research team found that a vitamin K analog, Compound 5 (Cpd 5), causes an imbalance in the normal activity of enzymes that control the addition or removal of small molecules called phosphate groups from selected proteins inside cells. Specifically, Cpd 5 blocks the activity of enzymes called protein-tyrosine phosphatases, which normally remove phosphate groups from selected proteins inside liver cancer cells. However, Cpd 5 does not interfere with another group of enzymes called protein tyrosine-kinases, which add phosphate groups to these same proteins. The result is an excess of what are called tyrosine phosphorylated proteins, which trigger a variet
'"/>

Contact: Lauren Ward
wardla@a1.isd.upmc.edu
412-624-2607
University of Pittsburgh Medical Center
1-Jun-1998


Page: 1 2 3

Related biology news :

1. Indiana University, EPA to study airborne PCBs
2. University of Alberta researcher looks for clues to mysterious disease
3. Northeastern University receives $12.4 million NSF grant for creation of nanomanufacturing institute
4. Washington University in St. Louis leads group studying aging process
5. Tufts University establishes $4 million dollar tissue engineering resource center
6. Case for IBD combination therapy comes from research at Baylor, MIT and Hebrew University
7. As informatics grows, Indiana University helps set research agenda
8. University of Arizona licenses patent for natural fungicide
9. Washington University in St. Louis plays key role in sequencing moss genome
10. University of Pittsburgh receives $10 million grant for head and neck cancer
11. Clemson University spin-off uses corn to make plastics, provide cleaner air

Post Your Comments:
(Date:10/18/2014)... Berlin, 19th October 2014 Psychological stress and stress-related ... for aging-related diseases, but the molecular mechanisms ... mechanisms may contribute to the development of ... treatments for these devastating diseases. This work ... Neuropsychopharmacology congress in Berlin., Now an international ...
(Date:10/18/2014)... suspected genetic conditions, a certain type of exome sequencing ... than traditional molecular diagnostic methods, according to a study ... released to coincide with the American Society of Human ... protein­coding region of the genome (the complete set of ... organism), has been rapidly applied in research settings and ...
(Date:10/17/2014)... German . ... in order to reproduce? And why are there two sexes ... latest issue of the research journal Molecular Human Reproduction ... Ramm from Bielefeld University Bielefeld has compiled this special issue ... a female to copulate with several males in quick succession ...
Breaking Biology News(10 mins):Researchers find why depression and aging linked to increased disease risk 2Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3Sperm wars 2
(Date:10/25/2014)... Moines, Iowa (PRWEB) October 24, 2014 ... that Perdue plans to more than double the ... 2015 in geographies supplying its soybean crush facility ... produced from this program will target several markets ... oil alternatives with good performance. , For the ...
(Date:10/25/2014)... Today, Nerium International, a leader in ... its “Reflect Your Youth” contest, an effort launched to ... difference in their skin since using Nerium’s product line, ... life as a result of their newfound confidence. , ... by Nerium International to inspire conversations focused on the ...
(Date:10/25/2014)... MA (PRWEB) October 25, 2014 ... products, is pleased to announce the release of ... the highest level of contamination containment in critical ... Class 3 and higher cleanroom environments, ValuSeal® IonX™ ... polyester knit laundered wiper that continues Berkshire’s innovative ...
(Date:10/25/2014)... Biopharmaceuticals, Inc. (OTCBB: RGRX) ("the Company" or "RegeneRx") today ... on Thymosins in Health and Disease in ... beta 4 (TB4) linked with rhodamine (a fluorescent tracer ... rodent model of stroke, it was visualized outside of ... tissue of the brain).   The leakage of TB4 in ...
Breaking Biology Technology:DuPont Pioneer, Perdue AgriBusiness Announce Plans to Double Acreage for the 2015 Plenish® High Oleic Soybean Program 2DuPont Pioneer, Perdue AgriBusiness Announce Plans to Double Acreage for the 2015 Plenish® High Oleic Soybean Program 3DuPont Pioneer, Perdue AgriBusiness Announce Plans to Double Acreage for the 2015 Plenish® High Oleic Soybean Program 4Nerium International™ Inspires Conversation About the Journey of Aging with “Reflect Your Youth” Contest 2Ions Are Bygones, Berkshire Announces the Release of New Innovative Cleanroom Wipers 2Researchers Report Thymosin Beta 4 Crosses Blood-Brain Barrier In Animal Stroke Model 2
Cached News: