Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A universal Ebola drug target

08.10.2014

New study reports design, characterization of universally conserved drug target for current, future strains of virus

University of Utah biochemists have reported a new drug discovery tool against the Ebola virus. According to a study published in this week's online edition of Protein Science, they have produced a molecule, known as a peptide mimic, that displays a functionally critical region of the virus that is universally conserved in all known species of Ebola. This new tool can be used as a drug target in the discovery of anti-Ebola agents that are effective against all known strains and likely future strains.

The University of Utah (U of U) work, which was funded by the National Institutes of Health, was conducted by a large collaborative team led by Debra Eckert, Ph.D., (research assistant professor of biochemistry) and Michael Kay, M.D., Ph.D., (professor of biochemistry).

Key contributions to this work were provided by Dr. John Dye's laboratory at the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID), the lab of Christopher P. Hill, D.Phil., professor and co-chair of the U of U Department of Biochemistry, and a group led by Brett Welch, Ph.D. at Navigen, Inc., a Salt Lake City pharmaceutical discovery and development company. (Navigen has licensed exclusive rights to the technology from the U of U and is currently screening for drugs against the target.)

The Utah scientists designed peptide mimics of a highly conserved region in the Ebola protein that controls entry of the virus into the human host cell, initiating infection. Importantly, the researchers were able to demonstrate this peptide target is suitable for use in high-throughput drug screens. These kinds of screens allow rapid identification of potential new drugs from billions of possible candidates.

Current experimental drugs generally target only one of Ebola's five species. "The current growing epidemic demonstrates the need for effective broad-range Ebola virus therapies," says Dr. Tracy R. Clinton, lead author on the study. "Importantly, viral sequence information from the epidemic reveals rapid changes in the viral genome, while our target sequence remains the same. Therefore, our target will enable the discovery of drugs with the potential to treat any future epidemic, even if new Ebola virus strains emerge."

Ebola is a lethal virus that causes severe hemorrhagic fever with a 50 percent to 90 percent mortality rate. There are five known species of the virus. Outbreaks have been occurring with increasing frequency in recent years, and an unprecedented and rapidly expanding Ebola outbreak is currently spreading through several countries in West Africa with devastating consequences.

The development of an effective anti-Ebola agent to protect against natural outbreaks and potential bioterror exposures is an urgent global health need. There are no approved anti-Ebola agents, but a number of promising experimental drugs are being aggressively advanced to clinical trials to address the current crisis.

Dr. Eckert notes, "Although the current push of clinical trials will hopefully lead to an effective treatment for the Zaire species causing the present epidemic, the same treatments are unlikely to be effective against future outbreaks of a different or new Ebola species. Development of a broadly acting therapy is an important long-term goal that would allow cost-effective stockpiling of a universal Ebola treatment."

Of particular interest, this target was shown to be suitable for the discovery of mirror-image peptide inhibitors (D-peptides), which are promising drug candidates. Unlike natural peptides, they are not digested by enzymes in the blood. D-peptides are also much simpler and less expensive to produce compared to the current most promising approach, antibodies.

The Utah group has previously developed highly potent and broadly acting D-peptide inhibitors of HIV entry, currently in preclinical studies, and is now adapting this approach to Ebola using the mimics developed in this study. In collaboration with Navigen, several promising lead D-peptide inhibitors have already been identified. U of U and Navigen are now seeking additional funding to optimize these inhibitors and advance them into clinical trials in humans.

Phil Sahm | Eurek Alert!
Further information:
http://healthcare.utah.edu/publicaffairs/

Further reports about: Ebola Ebola virus Health Health Sciences clinical trials developed epidemic experimental sequence strains

More articles from Life Sciences:

nachricht The birth of a new protein
20.10.2017 | University of Arizona

nachricht Building New Moss Factories
20.10.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>