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Tag: "homing" at biology news

Mayo Clinic Researchers Create 'Obedient Virus'; First Step To Use Measles Virus Against Cancer

...on viruses have to certain cells and using it as a homing device to seek and enter cancer cells. The measles virus became the focus of this vision several years ago when the surprising finding was made that the measles strain used internationally for vaccinations has natural anticancer activity. "But we h...

Turning viruses into allies against cancer

...t" protein attached to the virus acts as a kind of homing beacon for radioactive iodine, providing a second line of attack against the cancer cells, technically known as radio-virotherapy. "These results clearly demonstrate the high potential of this modified virus to serve as a novel vector for cancer gen...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

...." From an evolutionary perspective, a mixture of homing and straying by offspring is a way that parents can spread the risk because offspring don't spawn in the same place. One of Quinn's hypotheses is that adults spawning in less predictable streams and rivers ?ones where conditions are good some years a...

UCLA scientists store materials in cells natural vaults

...s, including: * Therapeutic delivery, such as homing cancer drugs directly to a tumor cell without harming healthy tissue * Enzyme delivery to replace missing or defective enzymes, such as those that cause Tay Sachs disease * DNA delivery to correct genetic mutations * Timed release of drug...

Mouse with designer liver has enhanced glucose tolerance, insulin response

...m conducted biochemical analyses on the LGKO mice, homing in on enzymatic pathways critical to insulin response in cells. Upon stimulation with insulin, they found an elevated level of Akt/PkB kinase, an enzyme needed for insulin signaling, and elevated activity of IRS proteins. There was no activation of a...

Bacteria which sense the Earth's magnetic field

...s that certain animals -- like migratory salmon or homing pigeons -- have magnetite crystal chains in particular tissue. These chains are astoundingly similar to those in bacteria, and possibly develop through a related mechanism. ...

Animals can change genes quickly to keep up with viral ingenuity

...rticipate in molecular defenses against viruses by homing in on viral genetic material and directing its enzymatic destruction. Viruses can evolve quickly to out-maneuver RNAi mechanisms, but hosts would be expected to rapidly evolve countermeasures of their own to resist new viral strategies. The new resea...

Rare Chinese frogs communicate by means of ultrasonic sound

...eng said. "The electromagnetic sense in fishes and homing pigeons, polarized light vision in ants, chemical sensing of pheromones in insects and rodents, echolocation by ultrasound in bats and dolphins, are just a few examples. "That frogs can communicate with ultrasound adds to that list and represents a ...

Ecologists home in on how sperm whales find their prey

...buzzes" of sound. This pattern reflects the whales homing in on cephalopods such as squid, with the buzzes reflecting the animals' final approach when detailed information on the squid's position and movement are required, the researchers believe. Dr Stephanie Watwood and colleagues found that sperm whales...

Light guides flight of migratory birds

... mid 1980s, he was doing research to determine how homing pigeons navigated. There was a theory that wind-borne odors provide pigeons with information about the locations of odor sources, which could then be used to determine their position relative to the home loft when they were released at an unfamiliar ...

Drug dials down the energy within cells, UM researchers find

...disease-causing cells, Bz-423 is highly selective, homing in on disease-causing cells. In an attempt to better exploit its therapeutic properties, the researchers have been studying the details of Bz-423's activity. They learned that the compound targets an enzyme inside mitochondria, the energy factories ...

Drug can quickly mobilize an army of cells to repair injury

...n mobilized they can circulate in the bloodstream, homing to sites of injury and helping repair and regrow blood vessels that bring oxygen and nutrients to tissues. "Like AMD3100, G-CSF can bring these beneficial cells from the bone marrow into the bloodstream, but with G-CSF you don't see an increase in a...

Nanoparticles can track cells deep within living organisms

...eir business and do what they're supposed to do by homing in on targeted regions of the body." Laboratory tests showed that the cells retained their usual surface markers and that they were still functional after the labeling process. The labeled cells were shown to migrate to and incorporate into blood...

Homing pigeons get their bearings from their beaks

...very of iron-containing structures in the beaks of homing pigeons in a new study (1) by Gerta Fleissner and ...ry dendrites² of the skin lining the upper beak of homing pigeons. This research project found that these dendrites are arranged in a complex three-dimension...

Cloning the smell of the seaside

...irds such as shearwaters and petrels. It acts as a homing scent ?like Brussels sprouts at the Christmas dinner table! - and the birds sniff out their plankton food in the lonely oceans at astonishingly low concentrations. Scientists have known about DMS for many years but the genes responsible for its pr...

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