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Tag: "stem" at biology news

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

... miniscule niches of the body where the futures of stem cells are determined. Stem cells require these ni...nds. The niches also help maintain a supply of stem cells for later use. Inside your body, for example, there are separate niches for stem cells that wi...

Harvard scientists identify compounds that stimulate stem cell growth in the brain

...rsity have identified key compounds that stimulate stem cell growth in the brain, which may one day lead t...tors of proliferation of several cell types. When stem cells isolated from the brains of mouse embryos were exposed to LTB4 they proliferated and different...

Molecular 'marker' on stem cells aids research, perhaps therapies

A sugar molecule present on embryonic stem cells also has been found on the surface of a type of adult stem cell, a discovery that may help researchers isolate and purify adult stem cells for use in therapies...

Lost in the labyrinth

...defects in such pathways and in the development of stem cells frequently lead to leukemia and other diseas...all animal species. It also helps organisms manage stem cells, by keeping them on hold and preventing their differentiation until the right time. Such pathw...

Transplanted brain cells hold promise for Parkinson's disease

Transplanted neural stem cells hold promise for reducing the destruction of...f The Journal of Neuroscience shows a human neural stem cell transplant essentially enables an animal model for Parkinson’s to continue functioning normally...

Transplanted photoreceptor precursor cells restore visual function in mice with retinal degeneration

...er than injecting undifferentiated and uncommitted stem cells into the retina in hopes they would develop ...s that scientists may need to introduce changes in stem cells in order for them to become highly specialized neurons. Although the experiment has impl...

Newts which regrow their hearts

... newt heart regenerates without the involvement of stem cells. It also seems that the heart regeneration d...esearchers in Bad Nauheim found no indication that stem cells were involved in repairing newt hearts. he process of regenerating lost extremities is dif...

A valuable fly for research into disease

...ález, from IRB Barcelona, will discuss his work on stem cells and cancer; and Ginés Morata, from the Universidad Autónoma de Madrid, will address apoptosis and tumourous transformation. Heart disease is another topic that has recently been added to the list of diseases studied using Drosophila. Rolf Bodm...

Comments, experts and background on the 2006 Nobel Prize in chemistry

...mation, and will help scientists better understand stem cells and their potential for therapeutic applications. "This Nobel Prize also underscores the key role of chemistry in the scientific research into genetics. In order to take the first actual pictures revealing how the genetic information stored in...

Vaccination with embryonic stem cells prevents lung cancer in mice

...ve discovered that vaccinating mice with embryonic stem cells prevented lung cancer in those animals that ...est that it could be possible to develop embryonic stem cell vaccines that prevent cancers in humans, such as hereditary breast and colon cancer and lung ca...

The power of one: A simpler, cheaper method for cell fusion

...cally fuse cells - a vital technology for studying stem cells, creating clones and finding disease antibod...hnology and medicine. The technique is integral to stem cell research, where it affords researchers greater insight into how genes guide protein synthesis. ...

Who gives stem cells their marching orders?

... seemingly contradictory activities -- maintaining stem cells after the embryo has implanted in the mother...opment of an embryo from a few seemingly identical stem cells is a truly awesome feat of nature. As they bathe in a chemical soup they've manufactured thems...

Fantastic Voyage: A new nanoscale view of the biological world

...ck molecules. For example, researchers could track stem cells by labelling DNA with 15N. "These stable isotopes do not alter the DNA and are not toxic to people; with MIMS and stable isotope labelling we could track these cells, where they are and how they have changed several years later," says Lechene. ...

Researchers identify a key regulator for skin stem cells

...ing on a single gene, researchers can prevent skin stem cells from maturing into the three types of adult ...portant implications for scientists trying to grow stem cells in the lab, for both research and potential therapies. As researchers seek ways to manipulate...

Scientists crack genetic secrets of human egg

... coaxed to produce other specific cells, including stem cells, which can be directed to grow into new tiss...ases. Cibelli said his team's mission is to grow stem cells without using fertilized embryos, which can be controversial. This work used onlyunfertilized ...

Novel pathway regulates timing of brain cell development

...uction of different types of nerve cells by neural stem cells: neurons are produced first, then astrocytes...B4 that straddles the outer membrane of the neural stem cell. Corfas's team showed that mice lacking erbB4 produced astrocytes earlier in embryonic developm...

To slow AIDS in Russia, treat HIV-positive addicts, Stanford study says

... in antiretroviral therapies have the potential to stem the spread of the virus in Russia, but in 2005 less than 1 percent of HIV-infected Russians - 5,000 people - received the life-extending drugs. The situation is worse among drug users. "Almost no injection drug users in Russia are getting antire...

Rearing an army to save wheat

With wheat stem sawfly natural enemies in demand, Montana State Un...ved mass-rearing parasitic wasps that attack wheat stem sawfly larvae that tunnel the interior of developing wheat plants. The team includes entomologists D...

Natural protein stops deadly human brain cancer in mice

...s in the activity of cells that behave like cancer stem cells. The report is published this week in Nature...cause neural stem-cell-like clusters to lose their stem cell properties, which in turn stops their ability to divide. First they pretreated human glioblas...

Studies find general mechanism of cellular aging

...ults in pancreatic islet cells and brain and blood stem cells. The results show disparate cell types shar...ol of Medicine. "The studies indicate that certain stem cells lose their ability to divide and replace themselves with age as the expression of p16INK4a in...

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