The circadian clock is a finely tuned genetic mechanism that regulates our sleep cycle and key metabolic changes during the 24-hour cycle. It also may help determine whether we get sick or not, according to a new Yale School of Medicine study published online Feb 16 in the journal Immunity.
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Fruit flies infected with a blood-borne parasite consume alcohol to self-medicate, a behavior that greatly increases their survival rate, an Emory University study finds.
"We believe our results are the first to show that alcohol consumption can have a protective effect against infectious disease, and in particular against blood-borne parasites," says Todd Schlenke, the evolutionary geneticist who led the research.
Writing in the February 17, 2012 issue of the journal Cell, researchers at the Ludwig Institute for Cancer Research, the University of California, San Diego School of Medicine and the Toronto Western Research Institute peel away some of the enduring mystery of how zygotes or fertilized eggs determine which copies of parental genes will be used or ignored.
PROVIDENCE, R.I. [Brown University] — The evolution of plants and animals generally has been thought to occur through the passing of genes from parent to offspring and genetic modifications that happen along the way. But evolutionary biologists from Brown University and the University of Sheffield have documented another avenue, through the passing of genes from plant to plant between species with only a distant ancestral kinship.
Researchers have sequenced the genome of a contagious cancer that is threatening the Tasmanian devil, the world's largest carnivorous marsupial, with extinction. Cataloguing the mutations present in the cancer has led to clues about where the cancer came from and how it became contagious.
Researchers from the Massachusetts General Hospital (MGH) Cancer Center have identified a new potential strategy for treating colon tumors driven by mutations in the KRAS gene, which usually resist both conventional and targeted treatments. In a paper appearing in the Feb. 17 issue of Cell, the team reports that targeting a later step in the pathway leading from KRAS activation to tumor growth may be able to halt the process.
Understanding how RNA binding proteins control the genetic splicing code is fundamental to human biology and disease – much like editing film can change a movie scene. Abnormal variations in splicing are often implicated in cancer and genetic neurodegenerative disorders.
In a step toward deciphering the "splicing code" of the human genome, researchers at the University of California, San Diego School of Medicine have comprehensively analyzed six of the more highly expressed RNA binding proteins collectively known as heterogeneous nuclear ribonucleoparticle (hnRNP) proteins.
Vancouver, B.C. -- Marine protected areas (MPAs) may turn out to be in the wrong place at the wrong time. As a result of changing conditions, marine species have been on the move with observed shifts of as much as three kilometres per year over the past 50 years, and forecasts of shifts of as much as 300 kilometres in the coming 50 years.
Decisions on where to put MPAs weren't always made with a changing climate in mind. That has researchers asking how these areas—meant to protect biodiversity—can stand the test of time.
Walter and Eliza Hall Institute scientists have revealed new details about how cell signalling is controlled in the immune system, identifying in the process potential new therapeutic targets for treating severe blood disorders.
Dr Jeff Babon and Professor Nick Nicola, from the institute's Structural Biology and Cancer and Haematology divisions respectively, study interactions between internal cell signalling proteins called JAKs (Janus kinases) and SOCS (Suppressors of Cytokine Signalling).
Like a shredder, the immunoproteasome cuts down proteins into peptides that are subsequently presented on the cellular surface. The immune system can distinguish between self and nonself peptides and selectively kills cells that due to a viral infection present non-self peptides at their surface. In autoimmune diseases this mechanism is deregulated and the immune system also eliminates uninfected cells by mistake. However, inhibition of the immunoproteasome may alleviate disease symptoms and progression.
Scientists have found a way to generate and maintain stem cells much more efficiently by amplifying the effect of an essential protein.
Researchers from Denmark, Scotland and the USA have created synthetic versions of a protein, which manipulates adult cells – such as skin cells – so that they can subsequently revert to an earlier, embryonic like state. These reverted cells have the potential to become any cell in the body.
Researchers have long been fascinated by the secrets of Ramat Rahel, located on a hilltop above modern-day Jerusalem. The site of the only known palace dating back to the kingdom of Biblical Judah, digs have also revealed a luxurious ancient garden. Since excavators discovered the garden with its advanced irrigation system, they could only imagine what the original garden might have looked like in full bloom — until now.
COLLEGE PARK, Md. - U.S. corporations have far less cash on hand to invest than popularly believed - but enough to provide a significant economic stimulus and renewed employment growth in the midst of a tepid economic recovery, concludes a new study by University of Maryland economic researchers.
The study projects that if corporations invested their "excess" cash reserves in capital projects, it could generate as many as 2.4 million jobs over the next three years.
AMARILLO – Wheat streak mosaic resistance bred into several wheat varieties might be negated by the producer practice in the High Plains of planting wheat early and using it for both winter forage for cattle and grain, according to a Texas AgriLife Research scientist.
Dr. Charlie Rush, AgriLife Research plant pathologist in Amarillo, began a study in December that he "started out of necessity" after working for several years on the wheat streak mosaic virus.
A mixture of current drugs and carbon nanoparticles shows potential to enhance treatment for head-and-neck cancers, especially when combined with radiation therapy, according to new research by Rice University and the University of Texas MD Anderson Cancer Center.
The work blazes a path for further research into therapy customized to the needs of individual patients. The therapy uses carbon nanoparticles to encapsulate chemotherapeutic drugs and sequester them until they are delivered to the cancer cells they are meant to kill.