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Tag: "thought" at biology news

Genomic Analysis Uncovers New Targets for HIV Vaccine

...gnizing the virus as foreign. HLA-C however is not thought to be turned off by HIV-1. The new results suggest that for some individuals at least HLA-C is involved in controlling HIV-1. Since HIV-1 appears unable to shut off HLA-C, unlike A and B, HLA-C may represent an Achilles heel of HIV, according to Gold...

Scratch no more: Gene for itch sensation discovered

...mselves as if they had a bad itch. "That's when we thought the gene might be involved in the itch sensation," Chen says. "So we began to systematically investigate this possibility." They studied scratching behavior in two sets of mice — normal mice and GRPR knockout mice. Normal mice scratched vigorously w...

Cellular message movement captured on video

...x/Paxillin.paper.wmv.asx “It’s amazing to us. We thought the cell was so simple,” said Shu Chien, the senior author of the BBRC paper and a professor of bioengineering at UCSD’s Jacobs School of Engineering. “But it’s really very complex and I’m not sure we’re covering much as yet. We certainly don’t know ...

CSIRO scientists join fight to save 'Tassie devil'

...fy infected animals. DFTD is infectious and is thought to be passed between animals by biting when, for example, devils compete for food. Once the cancer becomes visible and spreads internally through the body, the animal usually dies within a few months from starvation and the breakdown of body function...

Research team identifies new Alzheimer's gene

...eliminary studies it increased a molecular process thought to play an important role in the development of tangles. Based on these findings, the researchers hypothesize that GAB2 might function under normal conditions to compensate for the harmful effects of APOE4 and other genes in older people and that the...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...rtant, but much smaller than what many researchers thought it would be," said Roepe. "Before the discovery of PfCRT, many thought PfMDR1 would be the primary culprit." Roepe, and his two other co-authors, Georgetown researchers...

New bacterium discovered -- related to cause of trench fever

...ecies, spread by sand flies. The researchers first thought this was causing the patient’s infection. But genetic comparisons showed that although the new bacterium is related enough to be classified with the other Bartonella bacteria, it is nevertheless distinct from all of them, the UCSF team found. Th...

Undergraduate research shows leaderless honeybee organizing

...t have large brains and are not capable of complex thought like humans. Though the bee colony is centered around the queen and her reproductive capabilities, findings by Schneider and others indicates that she does not exactly “rule.” Instead, the colony appears to be controlled by the anonymous consensus o...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...s incur costs. Testosterone, for example, has been thought of as a double-edged sword as it relates to sexual signals, because it enhances trait production but comes at a health price to the animal.” “This study shows that testosterone may not be as costly as previously thought, so long as animals can nut...

Massive herds of animals found to still exist in Southern Sudan

...alla gazelle in Southern Sudan, where wildlife was thought to have vanished as a result of decades-long confl...leagues also discovered populations of beisa oryx, thought to be extinct in the region, and the Nile lechwe, which is antelope found no where else in the world...

New findings challenge established views on human genome

...mammalian genomes. Until recently, researchers had thought that most of the DNA sequences important for biological function would be in areas of the genome most subject to evolutionary constraint – that is, most likely to be conserved as species evolve. However, the ENCODE effort found about half of function...

Herpes virus hijacks DNA repair process

... than cellular DNA," Tarakanova notes. "Many of us thought that such differences might be triggering the DNA damage response." Working in the laboratory of Herbert W. "Skip" Virgin, M.D., Ph.D., Edward Mallinckrodt Professor and head of the Department of Pathology and Immunology, Tarakanova found that murin...

Exploring the dark matter of the genome

...matin is far from mere junk. "Most researchers thought heterochromatin had little or no function, because...in-coding genes in the heterochromatin, previously thought to contain a mere 30 to 40 (the fly's total is 14,000 or more). Many of these genes were organized q...

In nature, proteins sweep up nanoparticles

...g because biomineralization has traditionally been thought of as a phenomenon that occurs within a cell, or in contact with it. But in this case, we see an intimate association of proteins and minerals that takes place as far as hundreds of microns away from the cell.” In other words, in addition to pumpi...

Potent possibilities for parasite attack

...sent from the human genome. The parasite genes are thought to have been acquired from bacterial species that have very similar sequences. "CFAS is involved in virulence and persistence in Mycobacterium, causative agent of tuberculosis, so the identification of a CFAS gene in Leishmania raises the exciting...

Researchers discover 'acquired' DNA key to certain bacterial infection

...ease. M. avium exists in the environment and is thought to infect humans when the infected environmental hosts – amoebas – are inhaled or swallowed. Incidence of M. avium as a cause of syndromes may be decreasing because of changes in treatment for HIV-infected patients, according to the Centers for D...

Endosome-mediated signaling in plants

...he paper, Dr. Niko Geldner. Endosomes were once thought to function solely in the inactivation of receptors and the down-regulation of cell signaling. Work in animal cells over the past several years has shown that receptor endocytosis can actually facilitate signaling through the cell, by bringing signal...

How 'memory' T cells curb the spread of viruses throughout the body

...n lymphoid organs such as the lymph nodes. It was thought that to protect from disease, memory CD8 T cells needed first to multiply in the lymph nodes and then migrate through the blood to kill infected cells at the site where the virus entered the body (most commonly the skin, the lungs or the gut). This ...

Human genetic 'deserts' are teeming with significant life

... Many of the areas of the human genome previously thought to be deserts are in fact teeming with life, a scientist will tell the annual conference of the European Society of Human Genetics today (Tuesday 19 June). Most known human genes in the genome map are still incompletely annotated, says Professor Ale...

Surprising origin of cell's internal highways

Scientists have long thought that microtubules, part of the microscopic scaffolding that the cell uses to move things around in order to hold its shape and divide, originated from a tiny structure near the nucleus, called the centrosome. Now, researchers at Vanderbilt Universi...

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