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Tag: "altering" at biology news

CU, USDA team to curb two invasive, poisonous vines

...ing vigor in some maize and soybean fields and are altering forest regeneration patterns. Native populations of pale swallow-wort ( Vincetoxicum rossicum ) in Ukraine and black swallow-wort ( V. nigrum ) in southwestern Europe are kept in check, though, by native natural enemies. Natural enemies to plants of...

MIT: Oceans are a major gene swap-meet for plankton

... as a system, meaning you can't change one without altering the other two." Such work is based on the discovery that seawater is absolutely loaded with invisible microbes. In trying to understand how this microbial system works, the MIT team has focused on Prochlorococcus as a model. The team's studies are...

Ernst Mayr's theory illustrated in genetic epidemiology studies

...at LDLR ?the common component. However, simply by altering the frequencies of the interacting genes, the apparent importance of these two genes in influencing cholesterol levels can be totally reversed. Such alterations, Templeton said, are the fundamental basis of genetic revolution. A school of biologis...

Pain killer fights breast cancer by targeting key enzyme

...nual meeting of the American Chemical Society. By altering the drug's basic chemical structure, the researchers could create several variations, or analogs, of nimesulide. Nimesulide has been around since 1985, but was banned from clinical and over-the-counter use in the United States due to rare cases of li...

Technique offers new view of dynamic biological landscape

...ty of one gene affects that of another -- involved altering single genes and analyzing their impact on growth in combination with all other genes in the yeast genome. "The one-to-one method has been an extremely powerful way of studying biological systems," said Weissman. "But we wanted to approach such analy...

From one cell, many possible cures

...lar to what they are used to within the body." By altering that flow of nutrients to the stem cells, researchers also hope to control what type of cell they ultimately will become, Ma said. "The perfusion bioreactor can be used to reproduce mesenchymal stem cells and to direct their differentiation into bo...

How Fruitflies Know It's Time for Lunch

...d expressed in only the subesophageal ganglion. By altering hug expression, the researchers uncovered the gene's behavioral influence: hug-expressing neurons influence a fly's decision to sample new food sources. The researchers also proposed that hug proteins play a role in hormone-triggered growth, an impor...

Membrane research opens window to benefits for plants, humans

... such proteins respond to cellular signals such as altering pH (acidity and alkalinity) or phosphorylation, a common cellular chemical process that controls protein activity. Surprisingly, the simulations clearly showed that specific residues that sit far away from a water pore control the opening of the cha...

Stem cells' electric abilities might help their safe clinical use

...ymphocytes, potassium channels are responsible for altering the membrane voltage of cells," says Li. "This in turn is required for the progression of certain cells into the next phase of a cell cycle." Li hopes the targeting of specific potassium channels will give scientists more understanding and control i...

Biotechnology's newest chemical tool

...mes to add various chemical groups to DNA, thereby altering its function. The work was published in an early online publication on November 27, 2005 in Nature Chemical Biology. The enzymes at the heart of the study, known as DNA methyltransferases, are one of the tools cells use to turn genes on and off. By...

How 'Dirt' Could Educate The Immune System And Help Treat Asthma

...e injected into the deep ocean, thereby indirectly altering oceanic carbon storage and atmospheric carbon dioxide concentration," said Atul Jain, a professor of atmospheric sciences. "Where the carbon dioxide is injected turns out to be a very important issue." Developed by Jain and graduate student Long Cao...

Climate change will affect carbon sequestration in oceans, model shows

...e injected into the deep ocean, thereby indirectly altering oceanic carbon storage and atmospheric carbon dioxide concentration," said Atul Jain, a professor of atmospheric sciences. "Where the carbon dioxide is injected turns out to be a very important issue." Developed by Jain and graduate student Long Cao...

Newly recognized gene mutation may reduce seeds, resurrect plants

... clue that changes in lipid synthesis were somehow altering seed development. Scientists already know that lipids play an important role in signaling developmental changes in plants and animals, and that other plants and animals, including humans, have genes similar to RST1. Jenks and his team now want to de...

NASA satellite data provides rapid analysis of Amazon deforestation

...stant or have increased over the past two decades, altering global carbon and climate while elevating the need for frequent and accurate assessment of forest loss. In the Brazilian Amazon alone, where the growth of cattle ranching and cropland agriculture are the primary causes of forest clearing, annual clea...

Promising therapies for haemophilia & heart disease

...led P-selectin is important for blood clotting and altering its levels in the bloodstream by infusion appears to have great therapeutic potential." Infusion of P-selectin could provide an affordable and more effective means of achieving clotting to stop bleeding incidents in haemophiliacs. Because they carry...

Vaccine targets tumors where they live

...any other therapy. This approach may be useful for altering the tumor environment in order to induce anti-tumor immunity and provides a foundation upon which other vaccine strategies can be contemplated for local delivery. ...

Learning how SARS spikes its quarry

...umans. Such mutations enable viral transmission by altering the shape of the spike protein, which affects how well it binds to the ACE2 receptor, explained Harrison. In particular, he said, the new structure shows how mutation at one of the two sites can enable the animal SARS virus to infect humans, but by i...

Molecular mechanism of feather formation found

...eving that Bmp2 was signaling them continuously by altering receptors in the cells. The over-expression of Bmp2 signaling via the altered receptors led to ongoing down-regulation of normal Shh expression needed to form the barbs. Harris and colleagues used a similar experiment to test whether Shh could up-re...

UCSD discovery may provide novel method to generate medically useful proteins

... In their paper, the researchers describe how by altering the amino acids at one or more of just 12 sites on...ey proteins, because microorganisms are constantly altering proteins on their surfaces to evade the immune system. Unlike the phage protein, antibodies have a ...

Tadpole soon to help in the fight against cancer and lymphedema

...ce and humans. A second part of their research was altering tadpoles in such a way that they make much less Prox1 than normal tadpoles. This resulted in a badly developed lymphatic vessel system, because of which the tadpoles showed signs of lymphedema. It did not have any effect on the blood vessel system. ...

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