Scientists discover new method of gene identification
Findings will help our genetic understanding of dangerous new viruses
2012-11-12
(Press-News.org) Scientists studying the genes and proteins of human cells infected with a common cold virus have identified a new gene identification technique that could increase the genetic information we hold on animals by around 70 to 80 per cent. The findings, published in Nature Methods, could revolutionise our understanding of animal genetics and disease, and improve our knowledge of dangerous viruses such as SARS that jump the species barrier from animals to humans.
Modern advances in genome sequencing — the process of determining the genetic information and variation controlling everything from our eye colour to our vulnerability to certain diseases — has enabled scientists to uncover the genetic codes of a wide range of animals, plants and insects.
Until now, correctly identifying the genes and proteins hidden inside the genetic material of a newly sequenced species has been a monumental undertaking requiring the careful observation and cataloguing of vast amounts of data about the thousands of individual genes that make up any given animal, plant or insect.
Dr David Matthews, the study's lead author and a Senior Lecturer in Virology at the University of Bristol's School of Cellular and Molecular Medicine, said: "Gene identification is mainly led by computer programmes which search the genome for regions that look like genes already identified in other animals or humans. However, this type of analysis is not always effective."
The Bristol team has now discovered a more effective way of detecting the genetic information present in animals, plants and insects using cutting-edge analysis tools to directly observe the genes and all the proteins they make.
To prove their technique worked, the researchers conducted an experiment to see how good their process was at gene discovery. Human cells were infected with a well-understood common cold bug to mimic a newly discovered virus. These infected cells were then analysed using the technique as if they were cells from a newly sequenced organism infected with a newly discovered virus.
The resulting list of "discovered" genes and proteins, when compared to the genetic information already known about humans and cold virus, proved extremely successful and demonstrated the power of this method.
A similar analysis of hamster cells provided directly observed evidence for the existence of thousands of genes and proteins in hamsters in a single relatively inexpensive experiment. Direct evidence for the existence of almost all of theses genes and proteins in hamsters is not available in the 'official' lists of hamster genes and proteins.
Dr Matthews added: "These findings open up the potential to take powerful analysis tools currently used to study human diseases and apply them to study any animal, insect or even plants – something previously either very challenging or simply not possible. This technique will also make it easier and much more efficient for scientists to study anything from farm animals and their diseases to insect pests that damage crops.
"In recent years, a number of dangerous new viruses have been transmitted from animals to humans including Influenza, SARS, Ebola, Hendra and Nipah viruses. Earlier this year three people became seriously ill and two of them died when they contracted a new SARS-like virus in the Middle East which is thought to have come directly from bats.
"Why bats harbour these viruses with limited ill effect is a mystery as the genetic make-up of these creatures is poorly understood. We are starting to apply our technique to laboratory grown bat cells to analyse the genetic and protein content of bats to gain more insight into their genetics and to understand how they are able to apparently co-exist with these viruses which all too often prove fatal in humans."
### END
ELSE PRESS RELEASES FROM THIS DATE:
2012-11-12
The impact of climate change on many aspects of cultural life for people all over the world is not being sufficiently accounted for by scientists and policy-makers. University of Exeter-led research by an international team, published on 11th November in Nature Climate Change, shows that cultural factors are key to making climate change real to people and to motivating their responses.
From enjoying beaches or winter sports and visiting iconic natural spaces to using traditional methods of agriculture and construction in our daily lives, the research highlights the cultural ...
2012-11-12
DURHAM, N.C. -- The first functional "cloaking" device reported by Duke University electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of that laboratory has developed a new design that ties up one of the major loose ends from the original device.
These new findings could be important in transforming how light or other waves can be controlled or transmitted. Just as traditional wires gave way to fiber optics, the new meta-material could revolutionize the transmission of light and waves.
Because the goal of this type of research involves ...
2012-11-12
New York, NY (November 11, 2012) — Although schizophrenia is highly genetic in origin, the genes involved in the disorder have been difficult to identify. In the past few years, researchers have implicated several genes, but it is unclear how they act to produce the disorder. A new study by researchers at Columbia University Medical Center identifies affected gene networks and provides insight into the molecular causes of the disease.
The paper was published today in the online edition of the journal Nature Neuroscience.
Using an unbiased collection of hundreds of mutations ...
2012-11-12
BUFFALO, N.Y. -- Animals that are socially isolated for prolonged periods make less myelin in the region of the brain responsible for complex emotional and cognitive behavior, researchers at the University at Buffalo and Mt. Sinai School of Medicine report in Nature Neuroscience online.
The research sheds new light on brain plasticity, the brain's ability to adapt to environmental changes. It reveals that neurons aren't the only brain structures that undergo changes in response to an individual's environment and experience, according to one of the paper's lead authors, ...
2012-11-12
Among patients with the most common form of kidney cancer, whites consistently have a survival advantage over blacks, regardless of patient and tumor characteristics or surgical treatment. That is the conclusion of a new study published early online in CANCER, a peer-reviewed journal of the American Cancer Society. The study's results suggest that additional efforts are needed to prolong the survival of all patients with kidney cancer.
Since the mid-1990s, black Americans have had a higher incidence of renal cell carcinoma, the most common form of kidney cancer, than ...
2012-11-12
While general pediatricians and pediatric emergency physicians value their role in concussion management, a study of their self-reported knowledge, practices and attitudes points to the need for improved concussion-specific training and infrastructure to support optimal patient care. The study, released today in the journal Pediatrics, served as a catalyst for The Children's Hospital of Philadelphia (CHOP) to create a new "medical home" model for managing pediatric and adolescent concussion.
The study surveyed 145 emergency medicine and primary care providers, among whom ...
2012-11-12
The use of helmets by skiers and snowboarders decreases the risk and severity of head injuries and saves lives, new Johns Hopkins-led research suggests. The findings debunk long-held beliefs by some that the use of helmets gives athletes a false sense of security and promotes dangerous behavior that might increase injuries.
"There really is a great case to be made for wearing helmets," says Adil H. Haider, M.D., M.P.H., an associate professor of surgery at the Johns Hopkins University School of Medicine and the leader of the study published in the November issue of the ...
2012-11-12
VIDEO:
First approved for use in the 1950s, beta blockers have been called the first "blockbuster " drug ever developed in the US. Today, millions of people take them for everything from...
Click here for more information.
(COLUMBUS, Ohio) November 2012 - First developed in the 1950s, beta blockers have been a mainstay in medicine for decades, used to treat everything from heart disease to stage fright to glaucoma. But some older classes of beta blockers are causing ...
2012-11-12
After emerging sometime before 1000 BC, the Maya rose to become the most advanced Pre-Columbian society in the Americas, thriving in jungle cities of tens of thousands of people, such as the one in Guatemala's Tikal National Park. But after reaching its peak between 250 and 900 AD, the Maya civilization began to wane and exactly why has been an enduring mystery to scientists.
Writing in the Nov.-Dec. issue of the Soil Science of America Journal (SSSA-J), an interdisciplinary team led by Richard Terry, a Brigham Young University soil scientist, now describes its analysis ...
2012-11-12
San Diego Self Storage (SDSS) is matching all financial donations from the 2012 "Bottles for Babies" collection campaign to benefit deserving military families. The campaign collected baby bottles and $5.00 to $20.00 donations to purchase baby bottles at 18 SDSS facilities through the non-profit organization MOM4USA. MOM4USA is a 501 c 3 non-profit organization that provides baby care packages to first-time active-duty parents, wounded warrior veterans and active-duty reservists. MOM4USA also offers assistance to military families through their mobile food pantry ...
LAST 30 PRESS RELEASES:
[Press-News.org] Scientists discover new method of gene identification
Findings will help our genetic understanding of dangerous new viruses
