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Tag: "cell" at biology news

Corals -- More complex than you?

...ve developed hundreds, even thousands of different cell types. A possible explanation for this, Prof. Miller believes, is that coral genes may interact with each other in far less complex ways. Humans, on the other hand, are the product of a continuous and complicated dialogue between thousands of gen...

Brain's white matter -- More 'talkative' than once thought

... me with myelin because we need to replace another cell that has been damaged.?...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

...e first to explain how anthrax can short-circuit a cell signal to block neutrophil movement, a realization...proach to tease out the anthrax toxin's effects on cell migration: They allowed the immune cells to be hijacked by another bacterium, Listeria monocytogenes...

How to steer a moving cell

...ive network of the signaling proteins that control cell movement. Their work, providing the first comprehensive profile of cell movement, could lead to a better understanding of cell migration in cancer metastasis and inflammato...

Students invent protective pouch to enhance cell therapy

...s undergraduates have invented a device to improve cell therapy for diabetes patients by anchoring transpl...e inventors say the same approach could be used in cell therapy for other ailments, including liver disease. "I think it's a brilliant idea," said one of...

New technique will produce a better chromosome map

...ds relate to the underlying genetic sequence, said cell and developmental biology research specialist Dmitri Novikov, who developed the new technique. The genome of the fruit fly, Drosophila melanogaster, was sequenced in 2000, and yet its relationship to chromosome structure remains unclear. "Since w...

Fat screen delivers plant-derived chemical with antidiabetic effects

...s and, more generally, provides validation for fat cell screens as a promising strategy for identifying ne...example of a small molecule that both promotes fat cell differentiation in vitro and improves glucose tolerance in vivo," Tontonoz's team concluded. The bio...

Molecule that destroys bone also protects it, new research shows

...ange in 2005 with the discovery of a new type of T cell that produces IL-17, now called TH-17," she said. "We know now that almost all autoimmune diseases, at least in the mouse model, are caused by TH-17 cells. This new information has forced scientists to revise completely how they view their favorite d...

DNA repair proteins monitored at double-strand break

...ment of these repair proteins can cause mutations, cell death or cancer, and the ability to track the process so closely will give researchers critical insights into what can go wrong with DNA repair. This could lead to novel ways to make cancer cells more sensitive to therapy by blocking their ability to...

LIAI scientists make important finding on cytomegalovirus transmission

...ssenger molecule which suppresses the protective T cell response that would normally attack the cytomegalovirus," he said. "By blocking the ability of the IL-10 molecule to bind to its receptor, then you allow these T cells to do their job and reduce or eliminate this virus." Croft said the scientists...

Toxoplasmosis infection trick revealed by scientists

... and interactions of the parasite protein and host cell sugars. This means that the team have a more detai... on the parasite’s surface and sugars on the human cell which lead to the cell’s invasion, there is potential to develop therapeutics that are targeted at d...

Dealing deadly cancers a knockout punch

...ir particular cancer, leading to additional cancer cell killing. It is through this second "inflammatory" ...thousands of copies of itself, and then causes the cell to burst, which releases viruses that infect and kill adjacent cancer cells. Normal cells are not ha...

Scientists develope a new model of artificial canine skin

... membrane. A study of the interactions between the cell populations of the various layers is of vital impo...e investigated adequately by means of conventional cell cultures. Researchers at the UAB and UNIVET, in cooperation with Affinity Petcare, have developed...

Slowing the racing heart

...ight-or-flight" reaction to adrenaline. A single cell in the upper right chamber is responsible for sett...ts neighbor cells to beat. In the human heart, one cell -- the pacemaker cell -- beats faster or slower to induce a rhythmic heartbeat that varies to increa...

DNA-damage test could aid drug development

...echnology and Whitehead Institute have developed a cell culture test for assessing a compound's genetic to...ly lose their nucleus during the last stage of red cell formation, and DNA-damaged precursors generate red blood cells containing an easily detected "micron...

Researchers develop way to calculate speed of bacterial sex

...wait times associated with conjugations, bacterial cell motion and transport in ground water, and the colonization of soil surfaces by bacterial cells. Using a previously established conceptual framework of conjugation processes in an isolated environment, researchers created a new mathematical model o...

Effect on breast tumors of DNA alternations in 3 genes described

...is a process that causes genes that promote normal cell growth to produce proteins that cause malignant behavior, or unregulated cell growth. Until now, data has been very limited regarding the mechanism and causes of hypermethylation...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

... period of time. The procedure involved implanting cell fragments extracted from the carotid body in the s...l experiments and in humans. The advantage of this cell type with respect to others is the possibility of carrying out autoimplants, thus avoiding tissue re...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

...uccessfully used nanotechnology to penetrate plant cell walls and simultaneously deliver a gene and a chem...logy to deliver imaging agents or chemicals inside cell walls. This would provide plant biologists with a window into intracellular events. The Iowa Stat...

Gene thought to assist chemo may help cancer thrive

...ientist at the Ovarian Cancer Institute. When a cell is malfunctioning or injured, the gene p53 is call...d into action and tries to repair the cell. If the cell can't be repaired, p53 starts a process known as apoptosis that kills the cell. It's p53's role as o...

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