Featured Research

from universities, journals, and other organizations

Promising target to block Staphylococcus infection discovered

Date:
February 10, 2013
Source:
NIH/National Institute of Allergy and Infectious Diseases
Summary:
Scientists have identified a promising lead for developing a new type of drug to treat infection caused by Staphylococcus aureus, a bacterium that frequently resists traditional antibiotics. The researchers discovered a system used by S. aureus to transport toxins that are thought to contribute to severe staph infections. These toxins -- called phenol-soluble modulins -- have gained much attention in recent years, but their multitude and diversity have hindered efforts to target them for drug development.

National Institutes of Health (NIH) scientists have identified a promising lead for developing a new type of drug to treat infection caused by Staphylococcus aureus, a bacterium that frequently resists traditional antibiotics. The researchers discovered a system used by S. aureus to transport toxins that are thought to contribute to severe staph infections. These toxins -- called phenol-soluble modulins (PSMs) -- have gained much attention in recent years, but their multitude and diversity have hindered efforts to target them for drug development.

Related Articles


Expanding on work that first described S. aureus PSMs in 2007, scientists at the NIH's National Institute of Allergy and Infectious Diseases found that the transport system, which they call Pmt, is common to all S. aureus PSMs and critical for bacterial proliferation and disease development in a mouse model. Their experiments suggest that a drug interfering with Pmt's function could not only prevent production of the PSM toxins, but also directly lead to bacterial death.

Although their study focused on S. aureus, the scientists suspect that Pmt performs the same role in other staphylococci, such as S. epidermidis, the leading cause of hospital-associated infections involving indwelling medical devices such as catheters, pacemakers and prosthetics. They plan to continue their studies to improve the understanding of how PSMs function and to learn how to interfere with the Pmt transport system to block disease.


Story Source:

The above story is based on materials provided by NIH/National Institute of Allergy and Infectious Diseases. Note: Materials may be edited for content and length.


Journal References:

  1. S Chatterjee et al. Essential Staphylococcus aureus toxin export system. Nature Medicine, 2013 DOI: 10.1038/nm3047
  2. Rong Wang, Kevin R Braughton, Dorothee Kretschmer, Thanh-Huy L Bach, Shu Y Queck, Min Li, Adam D Kennedy, David W Dorward, Seymour J Klebanoff, Andreas Peschel, Frank R DeLeo, Michael Otto. Identification of novel cytolytic peptides as key virulence determinants for community-associated MRSA. Nature Medicine, 2007; 13 (12): 1510 DOI: 10.1038/nm1656

Cite This Page:

NIH/National Institute of Allergy and Infectious Diseases. "Promising target to block Staphylococcus infection discovered." ScienceDaily. ScienceDaily, 10 February 2013. <www.sciencedaily.com/releases/2013/02/130210143254.htm>.
NIH/National Institute of Allergy and Infectious Diseases. (2013, February 10). Promising target to block Staphylococcus infection discovered. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2013/02/130210143254.htm
NIH/National Institute of Allergy and Infectious Diseases. "Promising target to block Staphylococcus infection discovered." ScienceDaily. www.sciencedaily.com/releases/2013/02/130210143254.htm (accessed October 31, 2014).

Share This



More Health & Medicine News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Fauci Says Ebola Risk in US "essentially Zero"

Fauci Says Ebola Risk in US "essentially Zero"

AP (Oct. 30, 2014) NIAID Director Anthony Fauci said the risk of Ebola becoming an epidemic in the U.S. is essentially zero Thursday at the Washington Ideas Forum. He also said an Ebola vaccine will be tested in West Africa in the next few months. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Nurse Defies Ebola Quarantine With Bike Ride

Nurse Defies Ebola Quarantine With Bike Ride

AP (Oct. 30, 2014) A nurse who vowed to defy Maine's voluntary quarantine for health care workers who treated Ebola patients followed through on her promise Thursday, leaving her home for an hour-long bike ride. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Pot-Infused Edibles Raise Concerns in Colorado

Pot-Infused Edibles Raise Concerns in Colorado

AFP (Oct. 30, 2014) Colorado may have legalized marijuana for recreational use, but the debate around the decision still continues, with a recent - failed - attempt to ban cannabis-infused edibles. Duration: 01:53 Video provided by AFP
Powered by NewsLook.com
British Navy Ship Arrives in Sierra Leone With Ebola Aid

British Navy Ship Arrives in Sierra Leone With Ebola Aid

AFP (Oct. 30, 2014) The British ship RFA ARGUS arrived in Sierra Leone to deliver supplies and equipment to help the fight against Ebola. Duration: 00:42 Video provided by AFP
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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