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New method to evaluate variations identified in breast cancer susceptibility genes

Using mouse embryonic stem cells, researchers at the National Cancer Institute (NCI), part of the National Institutes of Health, have developed a new method to evaluate which mutations, or changes, in a gene known to increase breast cancer susceptibility, may lead to cancer. The new test, called a functional assay, is more comprehensive and reliable than most current methods.

7 Jul 2008

Protein thought to promote cancer instead functions as a tumor suppressor

A protein previously thought to promote colorectal cancer instead suppresses the growth of human cancer cells in culture, researchers at UT Southwestern Medical Center have found.

7 Jul 2008

Resveratrol shown to reduce age related health problems

Researchers in the U.S. have found that a compound found in grapes and red wine can significantly reduce age related health problems.

7 Jul 2008

RNAs emerge as major players in gene regulation

Tiny strands of genetic material called RNA - a chemical cousin of DNA - are emerging as major players in gene regulation, the process inside cells that drives all biology and that scientists seek to control in order to fight disease.

6 Jul 2008

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.

6 Jul 2008

Researchers reveal types of genes necessary for brain development

Researchers from Harvard Medical School and Brandeis University have successfully completed a full-genome RNAi screen in neurons, showing what types of genes are necessary for brain development. Details of the screen and its novel methodology are published July 4th in the open-access journal PLoS Genetics.

4 Jul 2008

Breast cancer: How tumor cells break free and form metastases

When tumor cells acquire the capacity to move around and invade other tissues, there is a risk of metastases and cancer treatment becomes more difficult. At the Institut Curie, CNRS Director of Research Philippe Chavrier and his group have just discovered how breast cancer cells break the bonds that tether them to the tumor. The basement membrane around the mammary gland is a barrier to the spread of cancer cells. Three proteins in the tumor cells transport enzymes needed to perforate this barrier, and another protein puts these enzymes in the right place.

4 Jul 2008

Gene technique that alters CCR5-producing gene increases resistance to HIV in mice

Altering the gene that produces CCR5 protein on the surface of immune cells using a harmless virus was found to significantly increase resistance to HIV in mice, according to a study published Sunday in the journal Nature Biotechnology, the Press Trust of India reports (Press Trust of India, 7/1).

4 Jul 2008

New target for the potential treatment of tuberculosis

Scientists have uncovered a new target for the potential treatment of tuberculosis (TB), finally resolving a long-running debate about how the bacterial cell wall is built.

3 Jul 2008

Resveratrol mimics the beneficial effects of eating fewer calories

Large doses of a red wine ingredient can ward off many of the vagaries of aging in mice who begin taking it at midlife, according to a new report published online on July 3rd in Cell Metabolism, a Cell Press publication.

3 Jul 2008

Scientists shed new light into early mechanisms governing cardiovascular specification

The mature heart is composed by different cell types, including contractile cardiac cells, vascular cells, smooth muscle cells as well as pacemaker cells.

3 Jul 2008

Funding boost in fight against leukaemia

University of Manchester researchers have been awarded £1.6 million to study a group of genes identified as playing a key role in leukaemia.

From The University of Manchester 3 Jul 2008

Resveratrol improves health, but not longevity in aging mice

Scientists have found that the compound resveratrol slows age-related deterioration and functional decline of mice on a standard diet, but does not increase longevity when started at middle age.

3 Jul 2008

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.

3 Jul 2008

Microchip-based device determines the genetic signature of lung tumors

Massachusetts General Hospital (MGH) investigators have shown that an MGH-developed, microchip-based device that detects and analyzes tumor cells in the bloodstream can be used to determine the genetic signature of lung tumors, allowing identification of those appropriate for targeted treatment and monitoring genetic changes that occur during therapy. A pilot study of the device called the CTC-chip will appear in the July 24 New England Journal of Medicine and is receiving early online release.

3 Jul 2008