Tag: "fate" at biology news

Programmable Cells Open Window Of Opportunity For Gene Therapy

...subset of genes from thegenome for expression. The fate of the cell, then, is determined by therepertoire of these readied, or "potentiated" genes. Dr. Krawetz's main task was to determine how this mechanism "potentiation"arises. He began to look at several genes that he could show were exclusivelyactivat...

Offshore DDT Deposit Spreading, Research Suggests

...ts and Sciences, are now looking into the chemical fate of DDT and PCBs in offshore sediments and seawater. The research was funded by the University of Southern California Sea Grant program, a partnership between USC and the National Oceanic and Atmospheric Administration....

Gene Orchestrates Heart Chamber Development

...les, Bao and Cepko reasoned that itmight guide the fate of ventricular precursor cells. To test this hypothesis, Bao and Cepko collaborated with Benoit Bruneau andHHMI investigators <AHREF="http://www.hhmi.org/science/genetics/seidmanjg.htm">JonathanSeidman , also at Harvard Medical School,and ...

Knockout Mouse Reveals Genetic Mechanism In Defective Mammalian Ear Development

... amolecular signaling pathway known to direct cell fate in many differentorganisms, including fish and insects. This control mechanism, which involves the genes Jagged2 and Notch1, wasidentified in a collaborative effort by research teams headed by Dr. MatthewKelley at the Georgetown University Sc...

Researchers Track Path Of Safer Gene Delivery Method

...e very basicquestions we have to address about the fate of the polymer itself and also intrying to understand the mechanism before this system reaches the clinic," hecautioned....

New marking system gives scientists first real view of immune memory cells

... first time,visualize memory T cells, follow their fate in vivo and study their normalphysiology in health, autoimmune disease and organ transplantation," says Jacob. Although the existence of immune memory has been recognized and documented formore than 2,000 years, Dr. Jacob says, research has lagged be...

Heat damage to "photosynthesis engine" in symbiotic algae may be among major causes of coral bleaching

... coral appearnecrotic or rotten but their ultimate fate is not yet known. There is some evidence that in terms of coral bleaching "good" algae mayremain in place in the coral while the "bad" are expelled, allowing algalnatural selection to occur at increased water temperatures. Coral reefshave more than o...

Groundwater impacted by fire-fighting foams

...S. Environmental Protection Agency. Until now, the fate of AFFF released to the environment at fire-trainingfacilities and emergency response sites was unknown, says Jennifer A. Field,Ph.D., of Oregon State University. Commercial AFFF mixtures are proprietary innature, Field says, but they are known to co...

Ethnic clustering of male genes in India

...eculate that this skewed sharingreflects a typical fate of high-disparity unions between upper caste men andlower caste women. In such unions, they propose, the couple may frequentlyleave their home, settle in a new region, and merge into a lower, rather thanupper, caste. Such movements could provide wh...

Mountain Lake Hotel places environmental book in rooms

...rudence inthe behavior of those who can change the fate of the world. Wallace has earned many awards, including a Senior U.S. Scientist Award from theAlexander von Humboldt Foundation and a Fulbright award to lecture in Egypt andYugoslavia. He was an advisor to the U.S. Delegation at the First Conference ...

Learning how organs tell left from right

...d responding to instructions about theirpositional fate during the earliest stages of development, when the embryoresembles little more than a flat sheet of cells. Two proteins in particular,called Nodal and Pitx2, are produced predominantly on the left side of the mouseembryo and they appear to direct th...

Scientists identify novel component of cell-fate pathway

...molecular and biochemical details that controlcell fate and growth and may permit scientists to influence developmentalprocesses, like those that lead to cancer. The new component, casein kinase I (CKI), adds another step to thepreliminary outline of how the Wnt-signaling cascade functions. Dr. Jon ...

Virginia Tech microbe-minerals group launches new field of study

...acting such diverse environmental processes as the fate andtransport of heavy metals, biodegradation of en...-mineral interactions impact or play a role in the fate andtransport of energy-related contaminants, such as contaminants generated duringthe production of ...

How a gene tells plant to reject its own pollen

...itself, it is called "self-incompatible." The fate of pollen in self-incompatible plants can be thought of as the opposite of the fate of organ transplants in animals. A transplanted organ will be rejected if its genetic makeup is dif...

Fall Meeting: updated press conferences and special events

...he latest from Mars. As this advisory is sent, the fate of the Mars Polar Lander and the Deep Space 2 probe has not been determined. We will present the latest available information at this press conference. New Mars Global Surveyor results will also be highlighted. Panel: Richard Zurek, Project Scientis...

Zebrafish's powerful heart gene could lead to transplant therapy

...ebrafish so powerful it can be used toredirect the fate of cells in the developing embryo to become beating heartcells, suggesting that a similar gene in humans could be used to generate heartcells in culture for transplant in ailing people. The finding, the first discovery of a so-called "master" gene fo...

For a fish, there's no place like home, say major studies, offering key information for fisheries management

...d conserve any marine population, we must know the fate of the young produced by that population, and we must know something about the sources of young recruiting to that population," said Warner. The study of the otolith holds great promise, according to Warner. "Previous researchers have assumed that a...

Mouse embryo hints at how mammalian body forms

...yo. They made their discovery by tracing the fate and behavior of a key group of cells in the early embryo, known as the inner cell mass, from its origin in the so-called blastocyst stage -- when the embryo is a free-floating, hollow ball of cells -- through to its progression into the later embryo,...

Photoreceptor gene mutations cause degenerative eye disease

...t it might imply for how photoreceptor pattern and fate gets set up in the eye," says Contance Cepko , an HHMI investigator at Harvard Medical School, who authored an accompanying News & Views article in Nature Genetics . "The discovery of any mutation that affects that process is important." Dis...

Chinese 'dragon' nears extinction, biologists warn

... "Losing the Chinese alligator would be an ironic fate for an animal with such a rich, cultural significance in China." Celebrated every 12 years, the Year of the Dragon is considered to be particularly prosperous since dragons symbolize authority, courage and good fortune among Asians. The year 2000 i...

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