Navigation Links
MIT: Bacteria may readily swap beneficial genes
Date:11/1/2011

Much as people can exchange information instantaneously in the digital age, bacteria associated with humans and their livestock appear to freely and rapidly exchange genetic material related to human disease and antibiotic resistance through a mechanism called horizontal gene transfer (HGT).

In a paper appearing in Nature online Oct. 30, researchers led by Eric Alm of MIT's Department of Civil and Environmental Engineering and Department of Biological Engineering say they've found evidence of a massive network of recent gene exchange connecting bacteria from around the world: 10,000 unique genes flowing via HGT among 2,235 bacterial genomes.

HGT is an ancient method for bacteria from different lineages to acquire and share useful genetic information they didn't inherit from their parents. Scientists have long known about HGT and known that when a transferred gene confers a desirable trait, such as antibiotic resistance or pathogenicity, that gene may undergo positive selection and be passed on to a bacterium's own progeny, sometimes to the detriment of humans. (For example, the proliferation of antibiotic-resistant strains of bacteria is a very real threat, as seen in the rise of so-called "superbugs.")

But until now, scientists didn't know just how much of this information was being exchanged, or how rapidly. The MIT team's work illustrates the vast scale and rapid speed with which genes can proliferate across bacterial lineages.

"We are finding [completely] identical genes in bacteria that are as divergent from each other as a human is to a yeast," says Alm, the Karl Van Tassel Associate Professor. "This shows that the transfer is recent; the gene hasn't had time to mutate."

"We were surprised to find that 60 percent of transfers among human-associated bacteria include a gene for antibiotic resistance," adds computational systems biology graduate student Chris Smillie, one of the lead authors of the paper.
'/>"/>

Contact: Kimberly Allen
allenkc@mit.edu
617-253-2702
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Hey, bacteria, get off of my boat!
2. VTT identified specific bacteria which precede autoimmune diabetes
3. Do bacteria age? Biologists discover the answer follows simple economics
4. Researchers generate first complete 3-D structures of bacterial chromosome
5. Study proves new technology kills bacteria
6. New bacteria toxins against resistant insect pests
7. Bacteria forge nitrogen from nitric oxide
8. University of California Santa Barbara study reveals how gas, temperature controlled bacterial response to Deepwater Horizon spill
9. Study: Residential washers may not kill hospital-acquired bacteria
10. Bionic bacteria may help fight disease and global warming
11. UTHealth student earns fellowships to research major source of bacterial infections
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/24/2015)... , Aug. 24, 2015  Based on its recent analysis ... with the 2015 African Biometrics Company of the Year Award. ... substantial commercial success in Africa . It ... where it has implemented one of the largest biometric mass ... well as the Central Bank of Nigeria ...
(Date:8/20/2015)... 20, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... focused on the growing mobile commerce market and creator ... The Smart Card Alliance and the EMV Migration Forum.  ... the Smart Card Alliance Latin America (SCALA) Chapter provides ... and thought leaders promoting adoption of smart card technology. ...
(Date:8/18/2015)... 17, 2015 Research and Markets ( ... "Global Biometric Authentication & Identification Market: Focus ... Forecast, 2015-2020" report to their offering. ... systems market is expected to grow at an ... and generate over $25 billion (approximately) by 2020 ...
Breaking Biology News(10 mins):Frost & Sullivan Applauds DERMALOG's Rise as the Supplier of Best-in-class Biometric Solutions in Africa 2Frost & Sullivan Applauds DERMALOG's Rise as the Supplier of Best-in-class Biometric Solutions in Africa 3Frost & Sullivan Applauds DERMALOG's Rise as the Supplier of Best-in-class Biometric Solutions in Africa 4Frost & Sullivan Applauds DERMALOG's Rise as the Supplier of Best-in-class Biometric Solutions in Africa 5Frost & Sullivan Applauds DERMALOG's Rise as the Supplier of Best-in-class Biometric Solutions in Africa 6NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 2NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 3NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 4Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2
... dwelling at deep-sea hydrothermal vents opt for temperatures of ... choice of conditions, giving them the highest thermal preference ... for extreme temperatures may be the undersea worms' meal ... to access -- and feast on -- lush mats ...
... for measuring blood levels of specialized cells that circulate ... lining has been discovered by Duke University Medical Center ... are produced in the bone marrow and travel to ... that tests for EPCs could be used to assess ...
... for Biophysical Chemistry and other German and French ... with special protein synthesis procedures to uncover how ... structure. This work could make it possible to ... other diseases connected to potassium channel failure (Nature, ...
Cached Biology News:Some like it hot: Worms at deep-sea vents favor a fiery 45-55°C 2Measuring artery repair cells could become new heart disease test 2Measuring artery repair cells could become new heart disease test 3Unraveling the mysteries of poison 2
(Date:9/2/2015)... CHARLOTTESVILLE, Virginia , September 2, 2015 /PRNewswire/ ... Sponsoring der Gewinner des Wettbewerbs BeHEARD von 2015 ... einen internationalen vom Rare Genomics Institute. ... Wirksamkeit von Medikamenten für die Behandlung anderer Krankheiten ... wurde, Steven Laffoon und sein Team ...
(Date:9/2/2015)... ... September 02, 2015 , ... ... to creating professional commercial video content, to analysis of athletic performance. Producing ... that go by too quickly to process with the naked eye. , ...
(Date:9/1/2015)... The American Brain Tumor Association (ABTA) is now accepting ... program. LOIs are due no later than Wednesday, October ... Discovery Grants are one-year, $50,000 grants that fund high risk/high ... or treatment paradigms for adults and children with brain ... earliest stages, in the hopes that it spurs additional ...
(Date:9/1/2015)... ... September 01, 2015 , ... In her thought provoking debut novel ‘ Ebola ... not-so-distant future faced with an Ebola pandemic that is on the cusp of wiping ... enter the world of counterterrorism, and who continues to appear in this series of ...
Breaking Biology Technology:Biovista sponsert die Forschung von Wylder Nation Foundation zum Thema Mangel an saurer Sphingomyelinase 2Fastec Introduces the Quad-HD TS5-Q High-Speed Camera 2Fastec Introduces the Quad-HD TS5-Q High-Speed Camera 3American Brain Tumor Association Seeks Innovative Concepts For Discovery Research Grants 2Alexi Venice’s Debut Novel Takes on the Human Testing of a Vaccine for Ebola and Revenge by an Anti-Big Pharma Terrorist Group in ‘Ebola Vaccine Wars' 2Alexi Venice’s Debut Novel Takes on the Human Testing of a Vaccine for Ebola and Revenge by an Anti-Big Pharma Terrorist Group in ‘Ebola Vaccine Wars' 3
... 5, 2012  Nabsys, Inc., has initiated its transition ... the appointment of Stan Rose, Ph.D., as the ... announcing that Jeffrey Sklar, M.D., Ph.D., has agreed ... Nabsys is pioneering the development of a ...
... are getting smaller and smaller, flirting with new devices ... the shrinking of our technology is reaching an end. ... our electronics will stop. One promising alternative is graphene ... is not a semiconductor, but it can be altered ...
... 2012  Halozyme Therapeutics, Inc. (NASDAQ: HALO) will be presenting ... San Francisco on Wednesday, January 11, 2012 at 2:00 ... I. Frost, Ph.D., president and chief executive officer of ... (Logo: http://photos.prnewswire.com/prnh/20100302/LA63139LOGO ) The presentation will ...
Cached Biology Technology:Nabsys Expands Leadership Team to Prepare for Commercialization of Novel DNA Positional Sequencing Technology 2Nabsys Expands Leadership Team to Prepare for Commercialization of Novel DNA Positional Sequencing Technology 3Nabsys Expands Leadership Team to Prepare for Commercialization of Novel DNA Positional Sequencing Technology 4'Nanowiggles:' Scientists discover graphene nanomaterials with tunable functionality in electronics 2'Nanowiggles:' Scientists discover graphene nanomaterials with tunable functionality in electronics 3