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Tag: "material" at biology news

Study reveals new technique for fingerprinting environmental samples

...For example, genes involved in breaking down plant material are over represented in soil and absent in the sea water, while in sea water, genes involved in the passage of sodium, a major chemical component of salt water, were particularly abundant. As light is a major energy source for microbes living in surf...

Used in a new way, RNA interference permanently silences key breast cancer gene

...achieved with RNAi before the tiny bits of genetic material are become inactive as the cell population continues to expand. "We are a long way from using this technique in patients, but this study shows that that it may be possible to use RNAi in more than just experiments that silence genes temporarily," sa...

New tumor-suppressor gene discovered

...to different locations along the DNA. The inserted material disrupted the gene's function, which is to make a ...e--this time with a huge missing pie ce of genetic material caused by another transposable element jumping out and dragging lots of material along with it. "Wit...

Biomarkers isolated from saliva successfully predict oral and breast cancer

...to identify, collect, preserve and amplify genetic material and proteins. In this study, the UCLA team found they could isolate messenger RNA from saliva and blood sera that might have diagnostic value for detecting early cancer. In the cell, messenger RNA or mRNA carries a copy of the genetic code or DNA, h...

Novel gene-silencing nanoparticles shown to inhibit Ewing's sarcoma

...uding the ability to deliver these bits of genetic material in high concentrations to specific tumor sites, while avoiding degradation. To overcome these hurdles, the scientists employed a sugar-containing polymer invented by chemical engineers at the California Institute of Technology. For this experiment, ...

Chromosome Deletion Predicts Aggressive Neuroblastoma

...ut having amplified MYCN. "The deletion of genetic material on chromosome 11 may account for a significant per... designated chromosome 11q23. However, the loss of material at that site apparently removes the protective effect of a tumor suppressor gene, and thereby allows...

Double triumph in stem cell quest

...e sure that the stembrids contain only the genetic material of the adult donors? Verlinsky's response was that he fused male adult cells with a female ESC line, and the resulting cells were male. However, Verlinsky's team has not yet tested the HLA proteins on the cell surface to prove that the stembrids are ...

Marine sponge yields nanoscale secrets

...hemical reactions to form the glass or a rock-like material of a biomineral. From that discovery, the researchers learned that this enzyme actively promotes the formation of the glass while simultaneously serving as a template to guide the shape of the growing mineral (glass) that it produces. These discover...

NIAID begins clinical trial of West Nile virus vaccine

... or disease because it does not contain infectious material from the virus. For more information on the WNV vaccine trial, call the Vaccine Research Center's toll free number 1-866-833-LIFE, or visit the VRC Web site http://www.niaid.nih.gov/vrc/clintrials/clinstudies.htm. The vaccine in this study builds up...

UCLA scientists store materials in cells natural vaults

..., scientists often aim to safely deliver and leave material in the human body without causing harm. A big chal...sociate dean of research; Bruce Dunn, professor of material science and engineering; Jeffrey Zink, professor of chemistry and biochemistry and Valerie Kickhoefe...

Oldest cranial, dental and postcranial fossils of early modern European humans confirmed

...ut in the present attempt by using teeth as dating material reliable results were obtained. The findings are documented in the May 19 issue of Nature. "The dating results document that these samples are as old as we thought they should be," agree Maria Teschler-Nicola from the Natural History Museum in Vien...

UCSD medical/bioengineering reseachers show titanium debris satobtage artificial joints

...a team in using nano-technology to improve implant material which has three to five times higher wear resistance and fatigue properties to reduce particle generation from implants. In addition to Sung, additional authors were first author Moon G. Choi, M.D., UCSD Department of Orthopedic Surgery; and Hae S. ...

Doing a spin with DNA

... genetic information. During cell division genetic material is copied and the enzymes responsible for this must be able to transcribe the base sequences. This is only possible if the portion of DNA to be transcribed is unwound. This winding and unwinding of the DNA gives rise to torsional forces in the DNA, t...

Scientists generate patient-specific stem cells, Science study says

...es was created by transferring the nuclear genetic material from a non-reproductive cell of a patient into a d... or SCNT. Next, oocytes with the patient's genetic material were allowed to grow to the blastocyst stage, an early stage of embryo development. Stem cells were ...

SuperLigands - a database of ligand structures derived from the Protein Data Bank

...es was created by transferring the nuclear genetic material from a non-reproductive cell of a patient into a d... or SCNT. Next, oocytes with the patient's genetic material were allowed to grow to the blastocyst stage, an early stage of embryo development. Stem cells were ...

Nature provides inspiration for important new adhesive

...ood decayed by brown rot fungus. Regardless of the material used to produce the adhesives, they are renewable and may reduce the need for the currently used urea-formaldehyde wood adhesives that have health concerns, and are based on increasingly expensive petroleum. "This technology looks extremely promisin...

Making Sure Sacred Sheep Don't Become Extinct

...and embryos -- to make sure there's enough genetic material to reintroduce a species if necessary. Much of his collection deals with important livestock such as Holstein cattle and Yorkshire pigs. But one of the collections Blackburn, who is the coordinator of the animal section at ARS's National Center for ...

Future diabetes drugs may target new protein interaction

...of a chemical called pyruvate, which is a starting material for making glucose, and then accumulated high levels of sirtuin1 protein. (Rodgers will receive the Nupur Dinesh Thekdi Research Award on April 14 for this work as part of the School of Medicine's 28th annual Young Investigators' Day celebration.) "...

PHACCS, an online tool for estimating the structure and diversity of uncultured viral communities using metagenomic information

...of a chemical called pyruvate, which is a starting material for making glucose, and then accumulated high levels of sirtuin1 protein. (Rodgers will receive the Nupur Dinesh Thekdi Research Award on April 14 for this work as part of the School of Medicine's 28th annual Young Investigators' Day celebration.) "...

Computational verification of protein-protein interactions by orthologous co-expression

...of a chemical called pyruvate, which is a starting material for making glucose, and then accumulated high levels of sirtuin1 protein. (Rodgers will receive the Nupur Dinesh Thekdi Research Award on April 14 for this work as part of the School of Medicine's 28th annual Young Investigators' Day celebration.) "...

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