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Tag: "killing" at biology news

Gene key to taste bud development identified

... cells that are dividing, making them effective in killing cancer cells but also causing the unwanted side effect of killing taste buds. When the cancer treatments end, the taste buds gradually return, Hogan said....

White blood cells of cancer-resistant mice overwhelm natural defenses of cancer cells

...nd surrounding them, forming a "rosette," and then killing them. "Apparently, the mutation in the cancer-re...cted cancer cells. Cui and Willingham said the killing of the cancer cells in the cancer-resistant mouse requires three distinct steps: First, the white...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

...e, alternating magnetic field, thereby selectively killing cancer cells in a process called magnetic hyperthermia. Many researchers throughout the world are also studying the use of iron-containing nanoparticles in gene therapy, magnetic resonance imaging (MRI), and other medically important applications...

Turning a cellular sentinel into a cancer killer

...sco reported that p53 restoration was effective in killing lymphoma tumor cells. In a News & Views commentary published in Nature, Norman Sharpless and Ronald DePinho wrote that "these three papers provide reason for cautious optimism that reactivation of p53, and possibly of other tumour-suppressor ge...

How T lymphocytes attack

...ocytes which were then occupied by recognising and killing their adversaries. Furthermore, by analysing the distribution of T lymphocytes throughout the respective tumours, the scientists noted that these defenders were always present at the periphery, but that the presence of the antigen was essential to ...

Reminding doctors which antibiotics to prescribe cuts C. difficile infection rates

...ia---damage normal intestinal flora in addition to killing disease-causing microbes. This damage gives CD the opportunity to spread in the guts of patients recently treated with antibiotics. Infected patients can develop diarrhoea, colitis, and other conditions associated with intestinal inflammation. Rarely...

Targeting tumors the natural way

...dy's natural antibodies and immune responses. "The killing agent we chose is already in us," says UW-Madison chemistry professor Laura Kiessling, who led the work with postdoctoral researcher Coby Carlson. "It's just not usually directed toward tumor cells." In a series of cell-based experiments, the rese...

Viral protein is an effective preventative against infection

...lysins to punch holes in the bacteria’s cell wall, killing the bacteria, in order to escape. Fischetti’s lab has studied many different lysins and found that they work even from outside the bacterial cell as well as from the inside. In addition, unlike antibiotics, which kill many of the body’s beneficial ba...

Update on census of world's most endangered cat -- Female Amur leopard found dead

...then beaten to death with a heavy object. “The killing of even one female is a huge loss for a cat on the brink of extinction,?said Darron Collins, managing director of the Amur-Heilong Program, World Wildlife Fund. “This year’s census showed a desperate situation, with just seven female Amur leopards le...

Cellulosic ethanol: Fuel of the future?

...gh in the winter to kill the beetles, and they are killing the forest.'' Achievable goals The president's target of 35 billion gallons of alternative fuels by 2017 ''is very substantive, but Bush did not provide any insights into what he is going to do to make that happen,'' Somerville said, adding t...

Custom-made cancer cell attacks

...gh in the winter to kill the beetles, and they are killing the forest.'' Achievable goals The president's target of 35 billion gallons of alternative fuels by 2017 ''is very substantive, but Bush did not provide any insights into what he is going to do to make that happen,'' Somerville said, adding t...

Scientists find potential 'off-switch' for HIV virus

...l into a factory for making other viral particles, killing the cell in the process. Without these T cells, the body loses its ability to repel other infectious bacteria and viruses, and eventually dies from assaults from these other "opportunistic" infectious invaders. On rare occasions, however, a virus...

Mechanisms involved with tumor relapse identified

...ew polypeptide vaccine approach that induces tumor killing without causing HER-2/neu loss. Loss of HER-2/neu is a mechanism that tumors utilize to escape the immune-mediated destruction," he said. Since 2000, Manjili and his colleagues have been employing animal models of breast cancer to evaluate anti-tu...

Antifungal drug kills TB bug

... types of these azole drugs were also very good at killing the TB bacterium, and also that they bind very tightly to a number of the TB P450 enzymes that we have isolated ?inactivating their function." ...

Cancer-killing invention also harvests stem cells

...implanted for many weeks, continually removing and killing cancer cells. King's first targets are colorectal cancer and blood malignancies such as leukemia....

Scientists learn the origin of rogue B cells

...c Integrity and Immunity Group. Often, rather than killing off the cell, the body edits ?or corrects ?the receptor, like one might edit a paper, he says. In normal circumstances, this new, good receptor replaces the bad one, but what Casellas and Dr. Patrick C. Wilson of the Oklahoma Medical Research Foundat...

Nanotextured implant materials: blending in, not fighting back

...nd materials that accept good cells, as opposed to killing off bad cells." Normal healthy blood vessels have a thin lining of specialized cells called the endothelium, surrounded by a thicker layer of smooth muscle cells that make up the arterial wall. The proteins collagen and elastin make up much of thi...

Penn researchers show how nanocylinders deliver medicine better than nanospheres

...r injection, they delivered a more effective dose, killing more cancer cells and shrinking the tumors to a much greater extent. Spherical nanoparticles typically only stay in circulation for a few hours. The research team used nanoparticles that contained one water-loving chain of a common polymer called ...

Gene thought to assist chemo may help cancer thrive

...sful chemotherapy. The idea is that p53 assists in killing the cancerous cells that the chemo treatment injur... in helping chemo patients because it turns on the killing mechanism for the cells that were damaged by chemo. But McDonald points out that p53 can also help r...

Scientists seek useful traits in wild cottons

...orces them to move to neighboring cotton plants by killing the wheat with herbicide. "This produces massive thrips pressure on the cotton plants, and results in a lot of damage to those first four true seedling leaves," he said. "We measure the leaf damage, identify cottons that show thrips resistance...

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