G Protein News and Research

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UBC develops algorithm to predict how and when proteins misfold

Several neurodegenerative diseases - including Alzheimer's and ALS (Lou Gehrig's disease) - are caused when the body's own proteins fold incorrectly, recruit and convert healthy proteins to the misfolded form, and aggregate in large clumps that gum up the works of the nervous system. "For Star Trek fans, this is like the Borg, a fictional race of cyborgs that abduct and assimilate humans and other species," says Steven Plotkin, a biophysicist at the University of British Columbia in Vancouver who studies the process of protein misfolding.

24 Feb 2012

Unfolded end of Colicin N protein can kill antibiotic-resistant microbes

When bacteria wage a turf war, some of the combatants have an extra weapon. Certain strains of the bacteria E. coli produce proteins that kill competing E. coli and other like microbes, and researchers from Newcastle University in England have recently discovered something surprising about one of these lethal proteins: even after the toxic folded portion of the protein is removed, the unfolded end is still deadly.

24 Feb 2012

UA researchers identify the likely culprit of epilepsy

Only 10 years ago, deciphering the genetic information from one individual in a matter of weeks to find a certain disease-causing genetic mutation would have been written off as science fiction. It was the time of the Human Genome Project, and it had taken armies of sequencing robots working around the clock for almost a decade to unravel the complete sequence of the human genetic code - referred to as the genome - by churning out the DNA alphabet letter by letter.

24 Feb 2012

Scientists decode two new blood types

You probably know your blood type: A, B, AB or O. You may even know if you're Rhesus positive or negative. But how about the Langereis blood type? Or the Junior blood type? Positive or negative? Most people have never even heard of these.

24 Feb 2012

Scientists identify promising strategy for HIV vaccine design

HIV has eluded vaccine-makers for thirty years, in part due to the virus' extreme ability to mutate. Physical scientists and clinical virologists from the Massachusetts Institute of Technology (MIT) and the Ragon Institute in Cambridge, Mass., have identified a promising strategy for vaccine design using a mathematical technique that has also been used in problems related to quantum physics, as well as in analyses of stock market price fluctuations and studies of enzyme sequences.

24 Feb 2012

Circadian rhythm can influence a heart attack

Researchers have found that a biological clock can influence a heart attack. The risk of “sudden cardiac death” peaks in the morning and rises again in the evening as shown in lab animals.

23 Feb 2012

Pfizer responds to CDC’S ACIP discussion related to use of Prevnar 13 in adults over 50

Pfizer Inc. issued the following statement in response to today's discussion by the Centers for Disease Control and Prevention's (CDC) Advisory Committee on Immunization Practices (ACIP) regarding the use of Prevnar 13 (Pneumococcal 13-valent Conjugate Vaccine)in adults 50 years of age and older.

23 Feb 2012

New CETP blockers continue to show promise as viable heart drugs

Mindful of lessons from a failed heart drug that cost $800 million to develop, drug companies are taking another shot at new medications that boost levels of so-called "good cholesterol," which removes cholesterol from the body.

23 Feb 2012

Scientists design compounds that act against myotonic dystrophy type 1 RNA

While RNA is an appealing drug target, small molecules that can actually affect its function have rarely been found. But now scientists from the Florida campus of The Scripps Research Institute have for the first time designed a series of small molecules that act against an RNA defect directly responsible for the most common form of adult-onset muscular dystrophy.

23 Feb 2012

New kind of on-off switch for cortisol release in the brain discovered

After we sense a threat, our brain center responsible for responding goes into gear, setting off a chain of biochemical reactions leading to the release of cortisol from the adrenal glands.

23 Feb 2012

Researchers discover how mTOR protein leads to cancer metastasis

Uncovering the network of genes regulated by a crucial molecule involved in cancer called mTOR, which controls protein production inside cells, researchers at the University of California, San Francisco (UCSF) have discovered how a protein "master regulator" goes awry, leading to metastasis, the fatal step of cancer.

23 Feb 2012

Study examines abdomyosarcoma growth in mouse models of muscular dystrophy

Inflammation, cell division and cell differentiation that occur during skeletal muscle regeneration may provide an ideal environment for the highly malignant tumor, rhabdomyosarcoma to arise. These are the findings from a Nationwide Children's Hospital study that examined rhabdomyosarcoma growth in mouse models of muscular dystrophy.

23 Feb 2012

AHA Heart-Check mark for almonds

The American Heart Association (AHA) recently certified almonds based on their nutrient profile to display the signature Heart-Check mark . The Heart-Check mark is overseen by AHA to help make it easier for shoppers to identify and choose heart-healthy foods.

23 Feb 2012

Targeting versican protein may help stop breast cancer metastasis

Oncologists have known that in order for cancer cells to spread, they must transform themselves so they can detach from a tumor and spread to a distant organ. Now, scientists at Weill Cornell Medical College have revealed critical steps in what happens next -- how these cells reverse the process, morphing back into classical cancer that can now grow into a new tumor.

23 Feb 2012

People with celiac disease are at risk for osteoporosis

People with celiac disease are at risk for osteoporosis, according to physicians at Loyola University Health System (LUHS). A 2009 New England Journal of Medicine study supports this correlation. Researchers believe that people with celiac disease may develop osteoporosis because their body poorly absorbs calcium and vitamin D, which are necessary for bone health.

22 Feb 2012

Gluten-free diet more of a fad than absolute necessity for many

Many people claim that gluten sensitivity is on the rise and consequently gluten-free products are more popular than ever. A study explores whether shunning gluten is really necessary and finds that in most cases it is not.

22 Feb 2012

Some diets and diet pills may cause further kidney damage in overweight adults

With 1 in 5 overweight Americans suffering from chronic kidney disease, Cleveland Clinic researchers analyzed the nutritional and lifestyle habits of overweight adults, finding that their methods included diets and diet pills that may cause further kidney damage.

22 Feb 2012

Study reveals how mutation shuts down DJ-1 protein's neuroprotective abilities

Purdue University researchers revealed how a mutation in a protein shuts down a protective function needed to prevent the death of neurons in Parkinson's disease, possibly opening the door to new drug strategies to treat the disorder.

22 Feb 2012

Researchers discover mechanism of thermostat protein

Johns Hopkins and National Taiwan University researchers have discovered more details about how an energy sensing "thermostat" protein determines whether cells will store or use their energy reserves.

22 Feb 2012

ALS Association, AAN to honor KCL neurologist with Essey Award

The American Academy of Neurology and the ALS Association are awarding the 2012 Sheila Essey Award: An Award for ALS Research to Christopher Shaw, MBChB, MD, FRACP, with the Institute of Psychiatry at King's College London. Shaw will receive the award during the Academy's 64th Annual Meeting, April 21-28, 2012, in New Orleans.

22 Feb 2012