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Tag: "kinds" at biology news

DNA Molecules Used To Assemble Nanoparticles

...o build a single dendrimer carrying many different kinds of molecules such as contrast agents and drugs, bu...nthesized by Choi. In a solution of two different kinds of single dendrimers, these dangling lengths of DNA, typically 34-66 bases long, found complementary...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

...that broadens our insight intothe cause of certain kinds of UV-induced skin cancer, researchers atErasmus University Medical Center (Rotterdam, The Netherlands) haveemployed an evolutionarily ancient enzyme-repair system to identify theprincipal type of DNA damage responsible for the onset of skin-tumordev...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

...n in the gut. It makes me wonder howmany different kinds of microbes out there are metabolizing hydrogen in...d. "It's partspeculation, but given the number and kinds of bacteria that aremetabolizing hydrogen, it's probably a very old form of metabolism.That's import...

Priming embryonic stem cells to fulfill their promise

...teins - including laminin,fibronectin, and several kinds of collagen - that function as theextracellular matrix, or scaffolding, of most mammalian tissues. Untilnow, there has been no practical way to evaluate the daunting number ofpossible combinations of these proteins, any one of which could formthe opt...

Neuronal 'traffic jam' marks early Alzheimer's disease

...ges of Alzheimer's disease. They detected the same kinds of swelling in those samples that they had seen in the mice. "This was a small, initial neuropathological study, but we believe that it is significant," said Goldstein. "We found in the early cases a very strong, statistically meaningful swelling in ...

U-M scientist to talk about tissue engineering at AAAS

...gin to generate to fill in the wound. "In certain kinds of defects, the body cannot heal itself and the bo...ic proteins help cells differentiate into specific kinds of bone, and encouraging cells to make more BMPs during tissue engineering also can ramp up the effe...

Spider Venom Could Yield Eco-Friendly Insecticides

... agricultural pests. As researchers inventory more kinds of venom and uncover insecticide leads, they may be able to target insects that transmit new and emerging human diseases, such as Lyme disease and Rocky Mountain spotted fever (ticks) and dengue and yellow fever (mosquitoes). "One could envision spe...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...led machine. It may also give us insights into the kinds of disease states that can happen when clathrin-regulated endocytosis goes wrong. The findings, already published online, will appear in the April print edition of Molecular Biology of the Cell, whose editors have chosen to highlight the Weill Corne...

New Study from Affymetrix Laboratories Points to Changing View of How Genome Works

...protein-coding genes. The team found many diverse kinds of RNAs transcribed from distinct regions of the genome, creating a complex pool of overlapping transcription. While the team validated many known protein-coding transcripts that contribute to this complex pool, they also discovered that: Seventy-f...

Probing The Promise And Perils Of Nanoparticles

...essing those concerns by investigating how certain kinds of nanoparticles damage cell membranes—enough to cause cell death in some cases—and how the damage can be prevented. "If you're inventing these sorts of materials, you need to be concerned about their impact," said Mark Banaszak Holl, a U-M professo...

Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimer's, Parkinson's Disease

...ssor of chemistry. In the brain, "monomers of all kinds are suspended in a soup in equilibrium," he said. Given that the components of amyloid fibrils measure only billionths of a meter and are floating in a disordered mix, "the initial stages of amyloid aggregation are not fully understood," he said. "W...

New RNA polymerase discovered in plants

...rectly in the cell. Biologists have studied three kinds of RNA polymerase for decades in organisms ranging from brewer's yeast to humans. In all eukaryotes, the RNA polymerases Pol I, II, and III perform the same distinct , though separate, functions in different species. But then along came Pol IV. Pika...

RNA project to create language for scientists worldwide

...with one another as well as to integrate different kinds of information they obtain about RNA molecules," explained Dr. Neocles Leontis, a Bowling Green State University chemistry professor chosen by the RNA Society to head the consortium. "This," he added, "will make it easier to turn molecular informati...

Falling ants glide back to trunk to avoid dangers of forest floor

...s, but it does give us good information about what kinds of morphologies are involved in the transition from just parachuting, or just falling uncontrolled, to being able to control where you land," Yanoviak said. The gliding behavior would be a definite advantage for ants, like Cephalotes, that forage at...

New Insights Into HIV Immunity Suggest Alternative Approach to Vaccines

...g antibodies to bind to, and we vaccinated several kinds of animals. In none did we get any of the good antibodies. That frustrating result led me to ask if something was preventing these good antibodies from being made," Haynes said. "A light went on when I saw that the rare human monoclonal antibodies h...

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

... was done on laboratory animals implanted with two kinds of human cancer cells -- ovarian cancer and lymphoma -- and is probably still years away from use as a human therapy. But the concept has at last been proved in mice with human cancer tumors -- and that's an essential step toward using this approach ...

Probing the promise and perils of nanoparticles

...essing those concerns by investigating how certain kinds of nanoparticles damage cell membranes---enough to cause cell death in some cases---and how the damage can be prevented. "If you're inventing these sorts of materials, you need to be concerned about their impact," said Mark Banaszak Holl, a U-M prof...

Viral protein influences key cell-signaling pathway

...tor of gene activity in lymphocytes and many other kinds of cells," says Michael Lairmore, professor and chair of veterinary biosciences and a member of the OSU Comprehensive Cancer Center ?Arthur G. James Cancer Hospital and Richard J. Solove Research Institute. "We were surprised to see p300 show-up amon...

50-year-old Mystery Solved: Protein Tags Regulate Key Ion Channel

... where it regulates at least one and possibly many kinds of proteins, providing a novel target for the development of new drugs. The discovery, published in the 8 April 2005 issue of the journal Cell, answers a question dating back to the 1950s: How do cells control the background movement of potassium io...

Gene Therapy Cures Inherited Liver Disease In Rats

...g-term alleviations of the toxic symptoms of these kinds of diseases. The treatment could be repeated when needed. The treatment used a specially developed adenovirus to carry the gene into the animal's cells. This viral vector, as it is called, was manipulated so that it minimized toxic side effects. Thi...

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