Featured Research

from universities, journals, and other organizations

Bacteria communicate to help each other resist antibiotics

Date:
July 4, 2013
Source:
University of Western Ontario
Summary:
New research unravels a novel means of communication that allows bacteria such as Burkholderia cenocepacia (B. cenocepacia) to resist antibiotic treatment. B. cenocepacia is an environmental bacterium that causes devastating infections in patients with cystic fibrosis.

Artist's 3-D rendering of bacteria (stock image).
Credit: fotoliaxrender / Fotolia

New research from Western University unravels a novel means of communication that allows bacteria such as Burkholderia cenocepacia (B. cenocepacia) to resist antibiotic treatment. B. cenocepacia is an environmental bacterium that causes devastating infections in patients with cystic fibrosis (CF) or with compromised immune systems.

Related Articles


Dr. Miguel Valvano and first author Omar El-Halfawy, PhD candidate, show that the more antibiotic resistant cells within a bacterial population produce and share small molecules with less resistant cells, making them more resistant to antibiotic killing. These small molecules, which are derived from modified amino acids (the building blocks used to make proteins), protect not only the more sensitive cells of B. cenocepacia but also other bacteria including a highly prevalent CF pathogen, Pseudomonas aeruginosa, and E. coli. The research is published in PLOS ONE.

"These findings reveal a new mechanism of antimicrobial resistance based on chemical communication among bacterial cells by small molecules that protect against the effect of antibiotics," says Dr. Valvano, adjunct professor in the Department of Microbiology and Immunology at Western's Schulich School of Medicine & Dentistry, currently a Professor and Chair at Queen's University Belfast. "This paves the way to design novel drugs to block the effects of these chemicals, thus effectively reducing the burden of antimicrobial resistance."

"These small molecules can be utilized and produced by almost all bacteria with limited exceptions, so we can regard these small molecules as a universal language that can be understood by most bacteria," says El-Halfawy, who called the findings exciting. "The other way that Burkholderia communicates its high level of resistance is by releasing small proteins to mop up, and bind to lethal antibiotics, thus reducing their effectiveness." The next step is to find ways to inhibit this phenomenon.

The research, conducted at Western, was funded by a grant from Cystic Fibrosis Canada and also through a Marie Curie Career Integration grant.


Story Source:

The above story is based on materials provided by University of Western Ontario. Note: Materials may be edited for content and length.


Journal Reference:

  1. Omar M. El-Halfawy, Miguel A. Valvano. Chemical Communication of Antibiotic Resistance by a Highly Resistant Subpopulation of Bacterial Cells. PLoS ONE, 2013; 8 (7): e68874 DOI: 10.1371/journal.pone.0068874

Cite This Page:

University of Western Ontario. "Bacteria communicate to help each other resist antibiotics." ScienceDaily. ScienceDaily, 4 July 2013. <www.sciencedaily.com/releases/2013/07/130704095130.htm>.
University of Western Ontario. (2013, July 4). Bacteria communicate to help each other resist antibiotics. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2013/07/130704095130.htm
University of Western Ontario. "Bacteria communicate to help each other resist antibiotics." ScienceDaily. www.sciencedaily.com/releases/2013/07/130704095130.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
The Hottest Food Trends for 2015

The Hottest Food Trends for 2015

Buzz60 (Dec. 17, 2014) Urbanspoon predicts whicg food trends will dominate the culinary scene in 2015. Mara Montalbano (@maramontalbano) has the story. Video provided by Buzz60
Powered by NewsLook.com
Rover Finds More Clues About Possible Life On Mars

Rover Finds More Clues About Possible Life On Mars

Newsy (Dec. 17, 2014) NASA's Curiosity rover detected methane on Mars and organic compounds on the surface, but it doesn't quite prove there was life ... yet. Video provided by Newsy
Powered by NewsLook.com
Ivory Trade Boom Swamps Law Efforts

Ivory Trade Boom Swamps Law Efforts

Reuters - Business Video Online (Dec. 17, 2014) Demand for ivory has claimed the lives of tens of thousands of African elephants and now a conservation report says the illegal trade is overwhelming efforts to enforce the law. Amy Pollock reports. Video provided by Reuters
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


Plants & Animals

Earth & Climate

Fossils & Ruins

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