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Tag: "replicate" at biology news

Wisconsin scientists grow critical nerve cells

...mise of embryonic stem cells with their ability to replicate indefinitely and develop into any of the 220 different types of cells and tissues in the body. But researchers have struggled to convert blank-slate embryonic stem cells into motor neurons, says Zhang. The goal proved elusive even in simpler vertebr...

Scientists Replicate Hepatitis C Virus in Laboratory

...is C virus (HCV) in the laboratory. The ability to replicate HCV in cell culture will allow researchers to better study the life cycle and biology of this virus and to test potential antiviral compounds, which may lead to new therapies for the liver disease that results from infection with HCV. Scientists at t...

Studies reveal methods viruses use to sidestep immune system

...desteps the immune response, allowing the virus to replicate unchecked. Dr. Michael Gale, associate professor ...-I conferred permissiveness to HCV, allowing it to replicate "like gangbusters" in those cells with the mutation, Dr. Gale said. He and his group determined that...

Transgenic plants remove more selenium from polluted soil than wild plants, new tests show

...med up for the six-week trial to see if they could replicate in field conditions the results of prior studies in laboratory greenhouses. Those previous tests showed that transgenic plants performed up to three times as well as wild plants in cleaning up selenium-polluted soil. "Field conditions involve a mill...

Researchers identify protein crucial for survival of Lyme-disease bacterium

...he nutrient is present, triggering the bacteria to replicate in large numbers and migrate to the tick's salivary glands, where they are transmitted into animals or humans during the tick's feeding process. The energy for replication is believed to come from the proteins and nutrients made available as the tick...

Buying Time Through Hibernation on Demand

...ative effects. If Roth and colleagues are able to replicate these findings in larger animal models, they foresee the first clinical use of this technology in humans could involve treating people suffering from severe fevers of unknown origin. Currently, when a person comes to an ER with such a fever they run ...

U-M team recovers ancient whale in Egyptian desert

...ative effects. If Roth and colleagues are able to replicate these findings in larger animal models, they foresee the first clinical use of this technology in humans could involve treating people suffering from severe fevers of unknown origin. Currently, when a person comes to an ER with such a fever they run ...

Mystery Blood Vessel Disorder Implicated In 'Mini' Strokes

...tribute to the syndrome. They will also attempt to replicate their MRI data in an autopsy study of patients who died with dolichoectasia. ### Article: "Intracranial Arterial Dolichoectasia and Small-Vessel Disease in Stroke Patients," by Fernando Pico, Julien Labreuche, Pierre-Jean Touboul, Didier Leys, and ...

Turning viruses into allies against cancer

...their natural abilities to infiltrate, commandeer, replicate and destroy, but only in tumor cells and not surrounding healthy tissue. Several of these "oncolytic" (cancer-killing) viruses are in varying stages of development, including modifications of the virus that causes measles and another, the herpes sim...

Study reveals candidate targets for anti-retroviral therapeutics

...del to help scientists understand how cancer cells replicate out of control. The Sandmeyer laboratory, which has expertise in genetics and biochemistry, screened a collection of over 4457 mutant yeast strains representing most of the known genes in yeast. They then solicited the help of computer scientist Pie...

Measles Deaths Worldwide Drop By Nearly 40% Over Five Years

...m other diseases. “We now have the opportunity to replicate this successful model as we tackle other child killers such as malaria,?Bellamy said, noting that in late 2004, Togo’s children received four life-saving interventions at once. The landmark campaign reached over 95% of the children under-five with va...

Two chemicals boost immune cells' ability to fight HIV without gene therapy

...immune cells to remain youthful and active as they replicate under HIV's attack. Drugs that activate telomerase also offer therapeutic potential for a wide spectrum of degenerative diseases and chronic conditions in which cellular aging plays a role. "I'm really excited by our findings. This progress moves us...

Software Tool for Converting Scientific Text into a Database of Functional Relationships

...ency is incomparable, and it is easy to verify and replicate the results of MedScan work." The new version of MedScan adds flexibility on the level of entity recognition and information extraction. It has become simple to customize dictionaries, and extract new types of relationships by adding or editing ling...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

... The machinery inside our cells has the ability to replicate our genomes extremely well, and the "polymerase" enzymes that replicate our DNA rarely make mistakes. Even when they do, we have multiple, redundant repair and proofreading...

How A Latent Virus Eludes Immune Defenses

...ivides, the latent gamma-herpes virus episome must replicate and segregate into daughter cells along with the cell’s genome. Viral replication and segregation requires the services of a protein called the episome maintenance protein—a potentially recognizable target for immune cells. Gamma-herpesviruses, incl...

Touching Molecules With Your Bare Hands

...ivides, the latent gamma-herpes virus episome must replicate and segregate into daughter cells along with the cell’s genome. Viral replication and segregation requires the services of a protein called the episome maintenance protein—a potentially recognizable target for immune cells. Gamma-herpesviruses, incl...

Chemical Engineer Kao Explores Antibiotic Synthesis With DNA Chips

...roup uses transposons--small DNA segments that can replicate on their own and insert their copies into new positions anywhere in the genome. Mutations induced by transposons are significantly easier to identify. A technique called DNA shuffling, recently developed by the Redwood City-based company Maxygen, pr...

Cancer drug slows poxvirus in mice

... cellular molecules and processes to enter a cell, replicate and then spread to uninfected cells. Using lab-grown cells, Dr. Kalman and his colleagues identified specific cell proteins vaccinia uses to detach from an infected cell and move toward an uninfected cell. The proteins, members of the Abl-family (pro...

Researchers grow stem cells from human skin

... to develop into specialized types of cells and to replicate themselves. Scientists hope to harness the potential of stem cells and use them to replace damaged cells and tissue in conditions such as spinal cord injuries, diabetes, Alzheimer's disease, stroke and burns. Most scientists believe that stem cells ...

Researchers discover mechanism for multiplying adult stem cells

...ther words, with Oct4 active, the stem cells could replicate themselves indefinitely, but could not produce mat...the adult stem cells in those tissues continued to replicate without forming mature tissue. In a mammal's body, this type of cell behavior causes tumors. But und...

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