G Protein News and Research

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Protein unfolding key to understanding blood clot mechanics

Fibrin, the chief ingredient of blood clots, is a remarkably versatile polymer. On one hand, it forms a network of fibers -- a blood clot -- that stems the loss of blood at an injury site while remaining pliable and flexible. On the other hand, fibrin provides a scaffold for thrombi, clots that block blood vessels and cause tissue damage, leading to myocardial infarction, ischemic stroke, and other cardiovascular diseases. How does fibrin manage to be so strong and yet so extensible under the stresses of healing and blood flow?

6 Aug 2009

Celera and Aurora to collaborate on cardiovascular genetics

Aurora Health Care, Wisconsin's largest health care provider, and Celera Corporation announced today that they have entered into an agreement to collaborate on the integration of genetic testing aimed at optimizing heart care for Aurora patients

6 Aug 2009

Importance of increased funding for molecular diagnostics

On July 9, 2009, the Society for Women’s Health Research convened experts on Capitol Hill to educate lawmakers on the importance of increased funding for new medical tests, called molecular diagnostics.

6 Aug 2009

Unstable proteins can cause premature ageing

The normal ageing process has long been linked to problems with cell respiration, the process through which the cells extract energy from nutrients.

6 Aug 2009

Scientists isolate protein that affects both the expression of genes and the transport of proteins

Scientists at UC Santa Barbara have isolated a unique protein that appears to have a dual function and could lead to a "boon in medicine." The findings are published in the August issue of the Journal of Cell Biology.

6 Aug 2009

Sensitizing tumor response to cancer treatment

Two forms of skin and brain cancer respond very poorly to chemotherapy and radiation: melanoma and glioblastoma multiforme brain cancer.

5 Aug 2009

Discovery of new gene mutations linked to leukemia

Decoding the complete DNA of cancer patients is giving scientists at Washington University School of Medicine in St. Louis a clearer picture of the complexity of the disease and allowing them to see intriguing and unexpected genetic relationships among patients.

5 Aug 2009

Research looks at cellular stress response to low oxygen

Gary Chiang, Ph.D., and colleagues at Burnham Institute for Medical Research (Burnham) have elucidated how the stability of the REDD1 protein is regulated. The REDD1 protein is a critical inhibitor of the mTOR signaling pathway, which controls cell growth and proliferation.

5 Aug 2009

Epigenetic alterations may serve as markers for chronic leukemia

A new study shows that certain genes are turned off early, before clinical signs of the disease appear, in the development of chronic leukemia.

5 Aug 2009

Aptamers offer unique therapeutic advantages

A novel class of drugs composed of single strands of DNA or RNA, called aptamers, can bind protein targets with a high strength and specificity and are currently in clinical development as treatments for a broad range of common diseases, as described in a comprehensive review article published online ahead of print in Oligonucleotides.

5 Aug 2009

Protein DNA repair complex key to avoiding DNA repair mistakes

As the body creates antibodies to fight invaders, a three-protein DNA repair complex called MRN is crucial for a normal gene-shuffling process to proceed properly, University of Michigan research shows.

5 Aug 2009

New insight into human ciliopathy

In the September 1st issue of G&D, Dr. Karen Oegema (UCSD) and colleagues identify the molecular basis of the lethal developmental disorder, hydrolethalus syndrome, and reveal that hydrolethalus syndrome actually belongs to the emerging class of human ciliopathy diseases.

4 Aug 2009

Clinical trial to test gene therapy for Alzheimer’s disease

Researchers at the Shiley-Marcos Alzheimer's Disease Research Center at the University of California San Diego are about to launch a Phase 2 clinical trial to test a gene therapy treatment for Alzheimer’s disease (AD) called CERE-110.

4 Aug 2009

Depression and inflammation linked to rheumatoid arthritis pain

Researchers at Nagoya City University and Nagoya University Graduate Schools of Medicine in Japan studied the interrelationship between levels of depression symptoms, C-reactive protein (CRP) level, and pain, confirming a significant positive association between depressive symptoms and CRP level in RA.

4 Aug 2009

Discovery of potential candidate protein for cancer vaccines

Researchers at the University of Pittsburgh School of Medicine have learned that some healthy people naturally developed an immune response against a protein that is made in excess levels in many cancers, including breast, lung, and head and neck cancers. The finding suggests that a vaccine against the protein might prevent malignancies in high-risk individuals.

4 Aug 2009

Flaw in bone's material leads to disease

The weak tendons and fragile bones characteristic of osteogenesis imperfecta, or brittle bone disease, stem from a genetic mutation that causes the incorrect substitution of a single amino acid in the chain of thousands of amino acids making up a collagen molecule, the basic building block of bone and tendon.

4 Aug 2009

Viral RNA linked to human immune response

In its fight against an intruding virus, an enzyme in our immune system may sense certain types of viral RNA pairs, according to scientists.

4 Aug 2009

New method selectively kills metastatic melanoma

An international team of researchers has identified a new method for selectively killing metastatic melanoma cells, which may lead to new areas for drug development in melanoma – a cancer that is highly resistant to current treatment strategies.

4 Aug 2009

Discovery of novel tumor suppressor

La Jolla Institute for Allergy & Immunology researchers studying an enzyme believed to play a role in allergy onset, instead have discovered its previously unknown role as a tumor suppressor that may be important in myeloproliferative diseases and some types of lymphoma and leukemia.

4 Aug 2009

Divers who hold breath for several minutes elevate a marker for brain damage

Divers who held their breath for several minutes had elevated levels of a protein that can signal brain damage, according to a new study from the Journal of Applied Physiology. However, the appearance of the protein, S100B, was transient and leaves open the question of whether lengthy apnea (breath-holding) can damage the brain over the long term.

4 Aug 2009