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Tag: "job" at biology news

Tool developed to silence genes in specific tissues using RNAi

... by a gene they wish to silence, RNAi would do the job for them. Producing the decoy "small RNAs" that trigger RNAi has become a fairly simple process, Wilkinson says, but the difficulty has been to use these matches only in specific tissues, and to figure out a way to make this "treatment" last. The wor...

Animals can change genes quickly to keep up with viral ingenuity

...new evidence that animals in fact do an impressive job of keeping up in the ongoing evolutionary arms race between viruses and their hosts. Studying a special class of genes thought to have evolved in part as a defense system against viruses, researchers have found evidence that these genes are indeed am...

Virginia Tech scientists develop process for creating biocompatible fibers

...olecules," Long said. "Matt (McKee) did a terrific job of bringing fundamental learning to a potentially new family of fabrics and membranes." Long said that the future opportunities are vast. "Our research group continues to fabricate molecules that self organize and can be electrospun. Potential appli...

Common bacteria pirate natural mechanism to get inside cells

...lthough there are no known receptors that have the job of triggering a bad result in the body, receptors that are 'on' too much may end up instructing the cell to do bad things, he says. "The hypothesis is that in cancer, for example, the receptors get stuck on 'on'." Receptor over-stimulation also help...

Melanoma vaccine strategy shows promise in laboratory experiments

...ler T cells. Dendritic cells have as their primary job the presentation of foreign materials to the immune system, and the expectation is that dendritic cells presenting the BRAFV600E peptide would trigger the killer T cells even more effectively than the monocyte cells used in the current study. Indeed,...

Portable cocaine sensor developed at UC Santa Barbara

... my students and post-doctoral fellows did a great job of mentoring and they all got a lot out of it, both the mentors and the mentorees." First author Brian Baker, a post-doctoral fellow, was one of these mentors. Elaine Doctor, a senior at Channel Island High School in Oxnard, Calif., and McCall Wood,...

Hot-spring bacteria flip a metabolic switch

.... As the sun goes down, these cells quit their day job of photosynthesis and unexpectedly begin to fix nitrogen, converting nitrogen gas (N2) into compounds that are useful for cell growth. The study, published January 30 in the early online edition of the Proceedings of the National Academy of Sciences...

GROWing the next generation of water recycling plants

..., there will still be others there to continue the job until the dead plants can be replaced. The beauty of the system is that it is not 'high-tech' in the traditional sense. "It does not require sophisticated maintenance, just tending, like any garden," says Butler. The next aim for GROW is to see if...

Anyway you slice it, tomatoes cut through drought with new gene

...to the different plants," Hirschisaid. "Dr. Park's job was to move this gene into the tomato." Hirschi, who's main research focus is "boosting nutrients in plants tomake them more nutritional for children," said the study now may be tried on other crops. Gaxiola said he already has additional studies...

Group proves it's possible to grow new lung alveoli by growing new blood vessels

... the growth factor proteins went to work doing the job they were programmed to do. The results were striking: In microscopic images, the scientists have charted the growth of alveoli and lung capillaries. In a typically healthy lung, a complex network of capillaries encircles the alveoli. Oxygen flows f...

Johns Hopkins flu expert calls for mandatory vaccination of health care workers

...w that voluntary vaccination programs don't do the job and that each year, nearly 40,000 Americans die from influenza, many of them elderly or ill, with weakened immune systems that cannot readily fend off the disease. In an editorial to be published in the journal Infection Control and Hospital Epidemi...

Finding rewrites the evolutionary history of the origin of potatoes

...ca and throughout the world. "As a taxonomist, my job is to help determine what is a species and to classify those species into related groups," Spooner explains. "Other scientists use these results as a kind of roadmap to guide them in the use of these species based on prior knowledge of traits in oth...

Penicillin, amoxicillin: Step aside for strep throat treatment

... U.S. children every year, simply aren't doing the job and aren't as effective as newer antibiotics known as cephalosporins. In results presented today at a large infectious disease meeting, the annual Interscience Conference on Antimicrobial Agents and Chemotherapy in Washington, doctors who reviewed th...

Shorter colds, milder flu may follow from newly revealed immune mechanism

...ophages alive, which allows them to continue their job in the face of a viral onslaught. "CCL5's role is somewhat of a paradox," Holtzman says. "Ordinarily, apoptosis is a protective mechanism. Death of infected lung airway lining cells, or epithelial cells, would deprive the virus of its home and prot...

Scientists map one of biology's critical light-sensing structures

...ot may help stabilize the protein so it can do its job of capturing light and triggering the cascade of downstream events under its control. "We think that without the knot, the protein conformational changes (prompted by light) would be too floppy to be efficiently channeled to downstream proteins," Fo...

Scientists pinpoint inflammation gene

...lular 'garbage truck' that doesn't properly do its job of clearing out the misfolded proteins that lead to inflammation." As further confirmation of their study results with the Wisconsin population, the researchers looked to see if they would replicate their findings in a distinct group of Texas famil...

Dangerous tricksters: Some bacterie use immune cells to reproduce

... neutralise the intruder. Macrophages, cells whose job is to devour such intruders, are attracted by substances typical of bacteria, which surround the microbe like a cloud. As soon as the immune cells have detected the intruder, they cover the bacterium with part of their own cell membrane like a hood, ...

UT Southwestern researchers develop screening test for cells that activate immune system

...res of tissue damage or infection. "Their primary job is to present antigens to the immune system so that you develop protective immunity for infection and cancer," said Dr. Takashima. The DC biosensor system should help pharmaceutical and biotech companies sift through large numbers of chemicals for o...

Researchers discover key to human embryonic stem-cell potential

...are called "transcription factors," proteins whose job is to regulate gene expression. (Transcription factors are really the genome's primary movers, overseeing, coordinating, and controlling all gene activity.) These proteins were known to play essential roles in maintaining stem cell identity--if they...

Elusive salamanders have role in developing new sampling models

...e our models, and we should be able to do a better job of predicting the type and location of suitable habitats plus minimize unnecessary and time-consuming sampling." Of more than 1,000 seasonal ponds at the 280,000-acre military facility in southeastern Georgia, 483 have been identified as potential c...

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