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:7/11/2014)... of kidney injury related to the use of hydroxyethyl ... HES molecules, according to a report in Anesthesia ... Research Society (IARS). , The "total mass of HES ... human renal proximal tubule cells (PTCs), concludes the laboratory ... Hospital Wrzburg, Austria. Other factorssuch as differences in ...
(Date:7/11/2014)... normal circumstances, astrocytes participate in normal physiological ... exhibit therapeutic and repairing effects on brain ... found that nerve cells differentiated from adipose-derived ... viability, which produces influences on subsequent studies ... Hospital, Hebei United University, China demonstrated that ...
(Date:7/11/2014)... to study the proteins that let nerve cells send ... stumbled upon a biological tactic that may offer a ... a safe and environmentally responsible way. , Their ... one species and harmless for a closely related onesuggests ... without harming beneficial species like bees. A summary of ...
Breaking Biology News(10 mins):In lab studies, hydroxyethyl starch has direct harmful effects on kidney cells 2Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3
... in the world to have survived exposure to the vacuum ... Ingemar Jnsson, a researcher at Kristianstad University in Sweden. ... Jnsson had some 3,000 microscopic water bears sent up on ... project, which was supported by the European Space Agency, was ...
... September, in the context of France,s presidency of the ... at the Grand Palais. The GMES (Global Monitoring ... to provide services relating to the environment, climate change, ... on data - mainly Earth observation data - from ...
... clear skies and smooth sailing for oceanic vessels has ... to air pollution and greenhouse gas emissions that impact ... James Winebrake and James Corbett examines "Emission Tradeoffs among ... Oil, Marine Gas Oil, and Marine Diesel Oil," in ...
Cached Biology News:Major European program for the environment under the spotlight in Lille, France 2Fuel emissions from marine vessels remain a global concern 2
(Date:7/11/2014)... Fla. , July 11, 2014 /PRNewswire-iReach/ -- Maxim ... high-quality peptides that are used solely in scientific experiments, ... two successful years in business, Maxim Peptide, which was ... just launched a new and updated website that now ... blog section has been updated with fascinating articles about ...
(Date:7/11/2014)... , July 11, 2014 /CNW/ - Sunovion Pharmaceuticals Canada ... TM (eslicarbazepine acetate) for use as a once-daily ... patients with epilepsy who are not satisfactorily controlled with ... use in patients under 18 years of age. ... neurological disorders and according to Epilepsy Canada, it affects ...
(Date:7/10/2014)... UK (PRWEB) July 10, 2014 ... 21st Century Medicine Forum on ‘Commercialising Longevity Research’ ... and entrepreneurs to the London Bioscience Innovation Center ... Research Foundation and Aging Analytics Ltd. The meeting ... investment in translational research for age-related disease, as ...
(Date:7/10/2014)... July 10, 2014 OMICS Group’s 5th ... during 18-20 August, 2014 at Double Tree by Hilton ... recent developments in Analytical & Bioanalytical research methods only ... Speaking on this occasion, Dr. Srinubabu Gedela, MD of ... conference is a remarkable one in bringing a unique ...
Breaking Biology Technology:Maxim Peptide Celebrates Second Anniversary Online with an Updated Website and Special Deals Section 2Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 2Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 3Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4
... Optimer Pharmaceuticals, Inc. (Nasdaq: OPTR ) today ... Genuity Annual Growth Conference on August 10, 2011 at ... Boston. (Logo:   http://photos.prnewswire.com/prnh/20090413/LA97352LOGO ) ... accessible in the Investors section of the Company,s website ...
... of bacteria in hospitals is increasing. Bacteria acquire resistance ... incorporating new genes, either from the surrounding environment or ... Portuguese CBA research (University of Lisbon) and the Instituto ... mechanisms of resistance are playing out in the bacterium ...
... tiny hair-like structures that perform feats such as clearing ... location of organs during development, move in mysterious ways. ... similar in appearance to "the wave" created in large ... a pattern of movement around the entire stadium. ...
Cached Biology Technology:Bacterial resistance to antibiotics: The more they resist, the more they divide 2Brandeis lab's artificial cilia spur new thinking in nanotechnology 2
... The mini incubation trays ... used to screen antigens that ... membrane. Each tray has eight ... channels that accommodate strips cut ...
... analysis and experiment control software. Records ... on-line and off-line analysis. powerful stimulus ... language allowing the user to customize ... Applications range from basic data logging ...
... • Small design specifically for western ... ,Trays are specifically designed for staining western ... x 25 mm) of the disposable tray ... a significant cost savings to the user. ...
... a direct antibiotic-based selection ... Recombinant selection depends solely ... the need for costly ... and inexpensive process provides ...
Biology Products: