Navigation Links
CU researchers discover target for treating dengue fever

AURORA, Colo. (April 17, 2014) Two recent papers by a University of Colorado School of Medicine researcher and colleagues may help scientists develop treatments or vaccines for Dengue fever, West Nile virus, Yellow fever, Japanese encephalitis and other disease-causing flaviviruses.

Jeffrey S. Kieft, PhD, associate professor of biochemistry and molecular genetics at the School of Medicine and an early career scientist with the Howard Hughes Medical Institute, and colleagues recently published articles in the scholarly journals eLife and Science that explain how flaviviruses produce a unique RNA molecule that leads to disease.

More than 40 percent of people around the world are at risk of being bitten by mosquitoes infected with the virus that causes Dengue fever and more than 100 million people are infected, according to eLife. Many develop headaches, pain and fever, but some develop a life-threatening condition where tiny blood vessels in the body begin to leak. Other flaviviruses, such as West Nile virus, are rapidly spreading around the globe. Flaviviruses are considered dangerous emerging pathogens.

The eLife paper shows that the virus causing Dengue fever and other closely related viruses like West Nile and Japanese encephalitis use instructions encoded on a single strand of RNA to take over an infected cell and reproduce. The viruses also exploit an enzyme that cells use to destroy RNA to instead produce short stretches of RNA that, among other things, may help the virus avoid the immune system of its host. Ironically, these viruses use a structured RNA molecule to resist an enzyme that normally "chews up" RNA.

The Science paper reveals the discovery that the resistant RNA folds up into an unprecedented "knot-like" structure. The enzyme, normally adept at breaking up RNA structure, encounters this particular structured RNA and cannot "untangle" it; thus the enzyme is thwarted. This is the first time this sort of RNA structure has been observed and it has characteristics that may be amenable to targeting by new drugs. To discover this structure, the researchers used a technique called x-ray crystallography, which allowed them to determine the structures of individual molecules.

This understanding of how an RNA found in many different flaviviruses thwarts a powerful enzyme may help scientists develop treatments or vaccines.


Contact: Mark Couch
University of Colorado Denver

Related medicine news :

1. NIH awards $20 million over 5 years to train next generation of global health researchers
2. Researchers develop a new cell and animal model of inflammatory breast cancer
3. Researchers uncover a viable way for colorectal cancer patients to overcome drug resistance
4. Researchers Find Gene Mutations That May Be a Key to Autism
5. Researchers find evidence of banned antibiotics in poultry products
6. NJ stroke researchers report advances in spatial neglect research at AAN Conference
7. Autism by the numbers: Yale researchers examine impact of new diagnostic criteria
8. Researchers Map Brain Regions Linked to Intelligence
9. Researchers ID Genes That May Determine Mental Illness
10. Researchers Develop Blood Test for Depression
11. University of Cincinnati researchers win $3.7M grant from US Department of Defense
Post Your Comments:
(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... ... for mental health professionals, announced today its affiliation with Tennessee Counseling Association. ... solutions to the network of the Tennessee Counseling Association, adding exclusive benefits and ...
(Date:6/26/2016)... ... June 26, 2016 , ... On June 10-11, 2016, A ... 2016 Cereal Festival and World’s Longest Breakfast Table in Battle Creek, MI, where the ... history as home to some of the world’s leading providers of cereal and other ...
(Date:6/25/2016)... ... June 25, 2016 , ... Experts from the American Institutes ... Research Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. , ... advance care planning, healthcare costs and patient and family engagement. , AIR researchers ...
(Date:6/25/2016)... , ... June 25, 2016 , ... As a lifelong ... Cum Laude and his M.D from the David Geffen School of Medicine at UCLA. ... to Los Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced ... feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, as a ... has released tools for healthy coping following a traumatic event. , Trauma sufferers tend ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... Story Highlights: ... the health care industry is causing providers to review ... Deloitte offers a suite of solutions for health care ... cost optimization: labor resource analysis, revenue cycle optimization and ... outcomes and better economics ...
(Date:6/24/2016)... SOUTH SAN FRANCISCO, Calif. , June 24, ... GBT ), a biopharmaceutical company developing novel ... with significant unmet needs, today announced the closing ... 6,400,000 shares of common stock, at the public ... the shares in the offering were offered by ...
(Date:6/24/2016)... 24, 2016 Research and ... "Structural Electronics 2015-2025: Applications, Technologies, Forecasts" report ... In-Mold Electronics, Smart Skin, Structural Health Monitoring, ... Structural electronics involves electronic and/or electrical components ... replacing dumb structures such as vehicle bodies or ...
Breaking Medicine Technology: