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Tag: "create" at biology news

Creating new life forms that may help eradicate cancer affecting women

...associated protein, HER-2/Neu, to immune cells, to create a vaccine called Lovaxin B. What these cells do is enlist killer T cells to seek and destroy tumor cells that over-express the HER-2/Neu molecule. This is significant because HER-2/Neu is over- expressed in 20%- 40% of all breast cancers. As Dr....

New science of metagenomics 'will transform modern microbiology'

...n laboratory bacteria. These bacteria are used to create a "library" that includes the genomes of all the microbes found in a habitat, the natural environment of the organisms. Although the genomes are fragmented, new DNA sequencing technology and more powerful computers are allowing scientists to begin m...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

... alone are overtly toxic, but combining the two to create water-soluble nanoparticles has a completely different effect," said Pisanic, who carried out the studies as a part of a Ph.D. thesis project at UCSD. Iron oxide nanoparticles are considered promising because they are maneuverable by remote magnet...

Virtual duck bills demonstrate species coexistence

...ign complex machinery. "The software allowed me to create exact, three-dimensional replicas of duck bills complete with articulating joints" said Gurd. "The replicas allowed me to determine the particle sizes each duck could ingest and the rate at which they could ingest them." D. Brent Gurd, "Predicting...

Reversing cancer cells to normal cells

...ction in melanoma cell invasiveness and ability to create new tumors. In fact, with inhibition of Nodal, the metastatic melanoma cells are reverted to a more benign skin cell without the ability to form tumors. Findings from the zebrafish study were further confirmed in the human embryonic stem cell mod...

Researcher examines polymers created with poultry feathers

...neering at Virginia Tech, is investigating ways to create biodegradable plastics from agricultural byproduct...it doesn't biodegrade. The challenge is how can we create a simpler plastic bag or bottle that will biodegrade?" According to Barone, the technology to cre...

'Exercise pill' switches on gene that tells cells to burn fat

...n mice through genetic engineering, he was able to create a mouse with an innate resistance to weight gain and twice the physical endurance of normal mice. Because they were able to run an hour longer than a normal mouse, they were dubbed "marathon mice." Subsequent work in the Evans laboratory found ...

Cholera pathogen reveals how bacteria generate energy to live

...this very basic mechanism charging this battery to create energy," she said. In order to learn how the enzyme works, researchers are trying to get an idea of its three-dimensional structure. "The enzyme is like two machines together ?imagine the turbine and generator of a hydroelectric dam. One is the so...

Virginia Tech's System X supercomputer provides super tool for simulation of cell division

... used the university's supercomputer, System X, to create models and algorithms that make it possible to sim...€˜parameters’ in the model equations in order to create an accurate representation of what is going on inside the cell. A simple example is the conversion b...

Plant studies reveal how, where seeds store iron

...rotein) with a powerful X-ray imaging technique to create a map of where iron is localized in the seed. Guerinot was surprised by the finding because most studies on iron storage focus on another protein called ferritin. "This project is a wonderful example of the power of using new combinations of tools...

Penn researcher shows that DNA gets kinky easily at the nanoscale

...ip across the contours of the molecule in order to create a picture of its structure. With this tool, Nelson and his colleagues measured the energies required to make various bends in DNA at lengths of five to 50 nanometers --- about a thousand times smaller than the diameter of a typical human cell. ''...

Living view in animals shows how cells decide to make proteins

...cal process to dice and splice genetic material to create unique and varied proteins. The scientists say the findings, made in mice, help explain a key wonder of human biology: how the same genes found in every cell of an individual’s body can produce different proteins in different tissues and organs. The...

Stem cells engage in dialogue with the cells that regulate their futures

...ne: tapping into the ways cells repair the body to create therapies to fix or replace injured tissues. She mentioned that it is thought that most, if not all, adult tissues contain stem cells. Through self-renewing division," she explained, "stem cells replenish the stem cell pool. They also produce prog...

Genetically engineered blood protein can be used to split water into oxygen and hydrogen

...s molecular complex can use energy from the sun to create hydrogen gas, providing an alternative to electrolysis, the method typically used to split water into its constituent parts. The breakthrough may pave the way for the development of novel ways of creating hydrogen gas for use as fuel in the future. ...

Science researchers genetically transform immune cells into tumor fighters

...s, so the researchers had to come up with a way to create these types of T cells from scratch. T cells carry a receptor protein on their surface that recognizes specific molecules called antigens on tumor cells. The receptor's genetic makeup determines the antigen types that the T cell can recognize, so t...

Math model predicts cancer behavior

...e nice thing about computer simulations is you can create ‘what if' scenarios: what if we make the oxygen ve...suggest that current chemotherapy approaches which create a harsh microenvironment in the tumor may leave behind the most aggressive and invasive tumor cells....

Protein structure initiative launches new resources for the scientific community

...erials repository in September. Next year, it will create an information hub where researchers can search fo... Enhanced software to analyze structural data and create higher-resolution images; More accurate screening processes to detect crystals suitable for imagin...

Plant studies reveal how, where seeds store iron

...rotein) with a powerful X-ray imaging technique to create a map of where iron is localized in the seed. Guerinot was surprised by the finding because most studies on iron storage focus on another protein called ferritin. "This project is a wonderful example of the power of using new combinations of tools...

Cracking the egg

...o unleash the dazzling cascade of events needed to create a viable organism. What's already in the egg that enables it to make the transition? How is it the same and how is it different across species? And what changes occur when the egg is fertilized? Scientists led by Drs Barbara Knowles and Alexei Evsiko...

Two nerve cells in direct contact

Movements in space create in humans and animals so-called optical flow fields which are characteristic for the movement in question. In a forward movement, the objects flow by laterally, objects at the front increase in size and objects further away hardly change at all. At a...

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