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Human embryonic stem cells developed from 4-cell embryo; world first may lessen ethical concerns
For the first time in the world scientists have succeeded in developing human embryonic stem cells (hESCs) from a single cell, or blastomere, of a 4-cell stage embryo.   view more (2008-07-09)

Finding suggests novel ways to boost vaccination or natural defenses
Our bodies rely on the production of potent, or 'high affinity', antibodies to fight infection. The process is very complex, yet Sydney scientists have discovered that it hinges on a single molecule, a growth factor, without which it cannot function.   view more (2008-07-08)

Novel hydrogel systems for dentin regeneration
Dental caries, or tooth decay, continues to be the most prevalent infectious disease in the world, presenting significant public health challenges and socio-economic consequences.   view more (2008-07-07)

Statins have unexpected effect on pool of powerful brain cells
Cholesterol-lowering drugs known as statins have a profound effect on an elite group of cells important to brain health as we age, scientists at the University of Rochester Medical Center have found. The new findings shed light on a long-debated potential role for statins in the area of dementia.   view more (2008-07-07)

Counting tumor cells in blood predicts treatment benefit in prostate cancer
Counting the number of tumor cells circulating in the bloodstream of patients with castration-resistant prostate cancer can accurately predict how well they are responding to treatment, new results show.   view more (2008-07-07)

Asthma risk increases in children treated for HIV
Children whose immune systems rebound after treatment with potent anti-viral drugs for HIV infection face an increased risk of developing asthma, said a federally funded consortium of researchers led by those from Baylor College of Medicine in a report that appears online in the Journal of Allergy... view more (2008-07-02)

Small protein may have big role in making more bone and less fat
A small protein may have a big role in helping you make more bone and less fat, researchers say.   view more (2008-07-02)

Researchers link early stem cell mutation to autism
In a breakthrough scientific study published today in the Proceedings of the National Academy of Sciences, scientists at the Burnham Institute for Medical Research have shown that neural stem cell development may be linked to Autism.   view more (2008-07-01)

New efficiency benchmark for dye-sensitized solar cells
In a paper published online June 29 in the journal Nature Materials, EPFL professor Michael Graetzel, Shaik Zakeeruddin and colleagues from the Changchun Institute of Applied Chemistry at the Chinese Academy of Sciences have achieved a record light conversion efficiency of 8.2% in solvent-free... view more (2008-06-30)

Cellular self-eating promotes pancreatitis
To survive tough times, cells sometimes resort to a form of self-cannibalism called autophagy. But as Hashimoto et al. reveal, autophagy can have a down side, destroying the pancreas by prematurely activating a digestive enzyme.    view more (2008-06-30)

How to build a plant
Walking through a tropical or temperate forest immediately impresses us with the myriad forms and soaring structures of the plant world, but our knowledge of how plants are actually built, cell by cell, is still incomplete.   view more (2008-06-26)

Weizmann Institute scientists discover how an injured embryo can regenerate itself
More than 80 years have passed since the German scientist Hans Spemann conducted his famous experiment that laid the foundations for the field of embryonic development.   view more (2008-06-26)

Researchers identify promising cancer drug target in prostate tumors
Scientists at Dana-Farber Cancer Institute report they have blocked the development of prostate tumors in cancer-prone mice by knocking out a molecular unit they describe as a "powerhouse" that drives runaway cell growth.   view more (2008-06-26)

Umbilical cord blood cell transplants may help ALS patients
A study at the University of South Florida has shown that transplants of mononuclear human umbilical cord blood (MNChUCB) cells may help patients suffering from Amyotrophic Lateral Sclerosis (ALS), also known as Lou Gehrig's disease.   view more (2008-06-25)

Nerve cells derived from stem cells and transplanted into mice may lead to improved brain treatments
Scientists at the Burnham Institute for Medical Research have, for the first time, genetically programmed embryonic stem (ES) cells to become nerve cells when transplanted into the brain, according to a study published today in The Journal of Neuroscience.   view more (2008-06-25)

Anti-inflammatory drug blocks brain plaques
Brain destruction in Alzheimer's disease is caused by the build-up of a protein called amyloid beta in the brain, which triggers damaging inflammation and the destruction of nerve cells.   view more (2008-06-24)

Refusal of suicide order: Why tumor cells become resistant
Cells with irreparable DNA damage normally induce programmed cell death, or apoptosis. However, this mechanism often fails in tumor cells so that transformed cells are able to multiply and spread throughout the body.   view more (2008-06-24)

Understanding the migration of cancer cells
Lamellipodia are veil-shaped protrusions of the plasma membrane, that can turn into upward-curled ruffles if they fail to adhere to the substrate.   view more (2008-06-23)

New source of heart stem cells discovered
Researchers at Children's Hospital Boston are continuing to document the heart's earliest origins. Now, they have pinpointed a new, previously unrecognized group of stem cells that give rise to cardiomyocytes, or heart muscle cells.   view more (2008-06-23)

Systems properties of insulin signaling revealed
A team of Swedish researchers has characterized novel systems properties of insulin signaling in human fat cells. Their mathematical modeling, described in an article published June 20th in the open-access journal PLoS Computational Biology, provides further insight into energy level maintenance... view more (2008-06-20)

Yale researchers discover Legionnaire microbe's tricks
Yale University researchers have shed new light how bacteria like the ones that cause Legionnaires' disease and Q-fever raise such havoc in human patients.   view more (2008-06-20)

Gene mutation improves leukemia drug's effect
Gene mutations that make cells cancerous can sometimes also make them more sensitive to chemotherapy. A new study led by cancer researchers at Ohio State University shows that a mutation present in some cases of acute leukemia makes the disease more susceptible to high doses of a particular... view more (2008-06-18)

Penn researchers find key developmental pathway activates lung stem cells
Researchers from the University of Pennsylvania School of Medicine found that the activation of a molecular pathway important in stem cell and developmental biology leads to an increase in lung stem cells. Harnessing this knowledge could help develop therapies for lung-tissue repair after injury or... view more (2008-06-18)

Weight loss after gastric bypass surgery may protect against infection and cancer
Another health benefit of bariatric weight-loss surgery may be a heightened immune defense against cancer and infections, a new study suggests. The results will be presented at The Endocrine Society's 90th Annual Meeting in San Francisco.   view more (2008-06-18)

Ability to track stem cells in tumors could advance cancer treatments
Using noninvasive molecular imaging technology, a method has been developed to track the location and activity of mesenchymal stem cells (MSCs) in the tumors of living organisms.   view more (2008-06-17)

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