Featured Research

from universities, journals, and other organizations

Findings to help in design of drugs against virus causing childhood illnesses

Date:
March 21, 2013
Source:
Purdue University
Summary:
New research findings may help scientists design drugs to treat a virus infection that causes potentially fatal brain swelling and paralysis in children. The virus, called enterovirus 71, causes hand, foot and mouth disease, and is common throughout the world.

New research findings may help scientists design drugs to treat a virus infection that causes potentially fatal brain swelling and paralysis in children.

The virus, called enterovirus 71, causes hand, foot and mouth disease and is common throughout the world. Although that disease usually is not fatal, the virus has been reported to cause fatal encephalitis in infants and young children, primarily in the Asia-Pacific region.

Currently, no cure exists for the infection.

New findings show the precise structure of the virus bound to a molecule that inhibits infection. The findings are detailed in a paper appearing this week in Proceedings of the National Academy of Sciences.

"These results provide a structural basis for development of drugs to fight enterovirus 71 infection," said Michael G. Rossmann, Purdue University's Hanley Distinguished Professor of Biological Sciences.

Rossmann is co-author of a paper with Purdue postdoctoral research associate Pavel Plevka; research scientist Rushika Perera; postdoctoral research associate Moh Lan Yap; Jane Cardosa, a researcher at Sentinext Therapeutics in Malaysia; and Richard J. Kuhn, a professor and head of Purdue's Department of Biological Sciences.

The researchers had previously used a technique called X-ray crystallography to determine the virus's precise structure. A small molecule called a "pocket factor" is located within a pocket of the virus's protective shell, called the capsid. When the virus binds to a human cell, the pocket factor is squeezed out of its pocket resulting in the destabilization of the virus particle, which then disintegrates and releases its genetic material to infect the cell and replicate.

Researchers led by Rossmann have developed antiviral drugs for other enteroviruses such as rhinoviruses that cause the common cold. The drugs work by replacing the pocket factor with a molecule that binds more tightly than the real pocket factor, inhibiting infection.

In the new work, the researchers obtained a near-atomic-scale resolution three-dimensional structure of enterovirus 71 binding with an inhibitor called WIN 51711.

"We show that the compound stabilizes the virus and limits its infectivity, probably through restricting dynamics of the capsid necessary for genome release," Rossmann said. "Our results provide a structural basis for development of antienterovirus 71 capsid-binding drugs."

At a resolution of 3.2 angstrom, the images show nearly atomic-scale structural features.

Hand, foot and mouth disease, an infection most common among young children, sometimes arises in a daycare setting. Of the 427,278 cases of the disease recorded in mainland China between January and May 2010, 5,454 cases were classified as severe, with 260 deaths, according to the World Health Organization.

The research was supported by the National Institutes of Health and the U.S. Department of Energy.


Story Source:

The above story is based on materials provided by Purdue University. The original article was written by Emil Venere. Note: Materials may be edited for content and length.


Journal Reference:

  1. P. Plevka, R. Perera, M. L. Yap, J. Cardosa, R. J. Kuhn, M. G. Rossmann. Structure of human enterovirus 71 in complex with a capsid-binding inhibitor. Proceedings of the National Academy of Sciences, 2013; DOI: 10.1073/pnas.1222379110

Cite This Page:

Purdue University. "Findings to help in design of drugs against virus causing childhood illnesses." ScienceDaily. ScienceDaily, 21 March 2013. <www.sciencedaily.com/releases/2013/03/130321133227.htm>.
Purdue University. (2013, March 21). Findings to help in design of drugs against virus causing childhood illnesses. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2013/03/130321133227.htm
Purdue University. "Findings to help in design of drugs against virus causing childhood illnesses." ScienceDaily. www.sciencedaily.com/releases/2013/03/130321133227.htm (accessed April 20, 2014).

Share This



More Plants & Animals News

Sunday, April 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins