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Tag: "killing" at biology news

DNA Molecules Used To Assemble Nanoparticles

... are small enough to enter a diseased cell, either killing it from within or sending out a signal to identify it. But making the particles is notoriously difficult and time-consuming. The nanoparticle system used by Baker's lab is based on dendrimers, star-like synthetic polymers that can carry a vast array...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...' amoeba genomes." Named for its effectiveness in killing other cells, E. histolytica was long considered to...on, gene expression, motility, metabolism, and the killing of host cells." ### The Institute for Genomic Research (TIGR) is a not-for-profit research institu...

Critical role in programmed cell death identified

...ns. "Now it seems that there is really one way of killing cells and it involves these mitochondria. Using ge...et that mitochondrial fragmentation is critical in killing cells. C. elegans worms are a convenient model system, Conradt explained, with a well documented ce...

Genetically modified natural killer immune cells attack, kill leukemia cells

...ells, it set off a reaction that super-charged the killing activity of the NK cell. "By developing a technique for cultivating large numbers of NK cells from a small blood sample, we made it practical to consider them a potential treatment against many different types of cancer," Campana said. "By genetical...

Probing The Promise And Perils Of Nanoparticles

...ations, they can completely destroy the membranes, killing cells in the process. But the damage can be prevented by engineering dendrimers in particular ways, such as modifying their surfaces to make them neutral instead of charged, the scientists found. And, added Banaszak Holl, "not only does engineering m...

Researchers trace evolution to relatively simple genetic changes

...the mechanisms are surprisingly simple. Instead of killing the protein (with mutations), you merely adjust the way it is normally regulated. That allows you to make a major change in a particular body region ?and produces a new type of body armor without otherwise harming the fish." ...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...the mechanisms are surprisingly simple. Instead of killing the protein (with mutations), you merely adjust the way it is normally regulated. That allows you to make a major change in a particular body region ?and produces a new type of body armor without otherwise harming the fish." ...

Researchers add new tool to tumor-treatment arsenal

...he cell" (a protein called p53) responds by either killing the cell, if the damage is too severe, or allowing... blocking p53's DNA-repair function, automatically killing the cancer cells when agents like cisplatin are introduced. "These findings provide the rationale f...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...-adapted trees, in which aquatic birds nest, while killing swamp deer and other animals. (The Pantanal's other fauna includes giant anteaters, armadillos, capybara, the Brazilian tapir and jaguar, and endangered species like the howler and capuchin monkeys, caiman, and giant black eagle.) Moreover, several ...

Probing the promise and perils of nanoparticles

...ations, they can completely destroy the membranes, killing cells in the process. But the damage can be prevented by engineering dendrimers in particular ways, such as modifying their surfaces to make them neutral instead of charged, the scientists found. And, added Banaszak Holl, "not only does engineering m...

Buying Time Through Hibernation on Demand

..."Right now in most forms of cancer treatment we're killing off the normal cells long before we're killing off the tumor cells. By inducing metabolic hibernation in healthy tissue we'd at least level the pla...

Anti cancer virotherapy well tolerated in first human administration, research finds

... that showed success in specifically targeting and killing melanoma cells in mice . The virotherapy technique involves the specific targeting and killing of cancer cells through the introduction into the body of the appropriate viral material which then ...

U-M team recovers ancient whale in Egyptian desert

..."Right now in most forms of cancer treatment we're killing off the normal cells long before we're killing off the tumor cells. By inducing metabolic hibernation in healthy tissue we'd at least level the pla...

Researchers uncover sequence of major rice pathogen

...g cause of rice loss, is responsible each year for killing enough rice to feed 60 million people worldwide. In the Nature paper, Dean and his co-authors shed some light on the adaptations required by a fungus to cause disease. The researchers identify novel receptors that allow the fungus to recognize its e...

Solutions that reduce death of marine life reeled in by International Smart Gear Competition

...ng solutions to prevent the accidental maiming and killing of marine mammals, juvenile fish, and sea turtles that become ensnared by fishing nets and longlines--a problem known as bycatch--while also improving the efficiency of commercial fishing. "These solutions safeguard our living oceans," said Carter R...

Researchers report new pro-inflammatory role for anti-inflammatory enzyme

...of NO," says Dr. Hobbs. "This aids host defense by killing the invading organism, but in excessive quantities starts to lead to host-damage. In sepsis, this is manifested predominantly as a profound hypotension, inadequate tissue perfusion and organ failure. This often results in death." Previously, Dr. Hob...

Discovery may lead to better Candidiasis drug

...e channel open, causing even better and more rapid killing of the fungus," said Edgerton. "In addition, many other pathogenic fungi that cause disease in elderly individuals or AIDS patients also should be able to be killed by histatins or drugs designed to target their potassium channels." ...

Genetically Modified Natural Killer Immune Cells Attack, Kill Leukemia Cells

...ells, it set off a reaction that super-charged the killing activity of the NK cell. "By developing a technique for cultivating large numbers of NK cells from a small blood sample, we made it practical to consider them a potential treatment against many different types of cancer," Campana said. "By genetical...

Plant Sacrifices Cells to Fight Invaders

...hogen from spreading. But how the plants keep from killing themselves after they turn on the cell-suicide process was a mystery. Now, in the May 20 issue of the journal Cell, Yale University's Savithramma Dinesh-Kumar and his colleagues report finding a gene that normally propagates a "pro-survival" signal ...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

...idely used chemotherapy drug Taxol are effectively killing tumor cells. They say that with further refinement, the test may make it possible to accurately assess whether patients are responding to these agents, as well as potentially others, within days of beginning therapy. In two different studies being ...

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