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Environmentally damaged DNA may contribute to human genetic diversity

In this month's issue of the leading scientific journal Genome Research, scientists from Kyushu University report how environmentally damaged DNA may contribute to human genetic diversity.

2 May 2006

Enzyme discovery could reduce Kaposi sarcoma tumour growth and lead to drugs suitable for treating other viral cancers

A report in the Journal of Biological Chemistry shows that inhibition of heme oxygenase-1, an enzyme involved in iron metabolism, reduces Kaposi sarcoma tumor growth. This discovery could result in the production of new drugs to treat this and other viral cancers.

28 Apr 2006

Researchers figure out how nuclear pores duplicate before cells divide

Researchers have long wondered how nuclear pores - the all-important channels that control the flow of information in and out of a cell's nucleus - double in number to prepare for the split to come when a cell divides. Now, for the first time, scientists at the Salk Institute for Biological Studies watched as new funnel-like pore structures formed from scratch, and inserted themselves into the nuclear membrane.

28 Apr 2006

Polycomb proteins key factors in influencing the direction of embryonic stem cell development

Embryonic stem cells may one day provide a means to treat disease, but according to two new reports, they are already revealing remarkable insights into the mysteries of human biology. How humans manage to develop from a single fertilized egg into the trillions of cells that make up a mature adult remains a poorly understood process. Now, using both human and mouse embryonic stem cells, researchers have mapped how a key developmental ingredient controls the genome.

28 Apr 2006

Discovery brings embryonic stem cell medicine a step closer

A team of scientists announced a critical step on the path of realizing the promise of embryonic stem (ES) cells for medicine. The researchers have discovered unique molecular imprints coupled to DNA in mouse ES cells that help explain the cells' rare ability to form almost any body cell type. These imprints, or "signatures," appear near the master genes that control embryonic development and probably coordinate their activity in the early stages of cell differentiation. Not only do these findings help to unlock the basis for ES cells' seemingly unlimited potential, they also suggest ways to understand why ordinary cells are so limited in their abilities to repair or replace damaged cells.

26 Apr 2006

Four subtypes of blood cancer identified

Scientists at Dana-Farber Cancer Institute and collaborators have identified four distinct genetic subtypes of multiple myeloma, a deadly blood cancer, that have different prognoses and might be treated most effectively with drugs specifically targeted to those subtypes.

26 Apr 2006

Cancer found grow by switching off DNA - may lead to new generation treatments

Cancer researchers have formulated a new concept for how cancer cells can escape normal growth controls by turning off DNA. These findings may have far-reaching implications for the new generation of cancer therapies.

25 Apr 2006

Penn researchers discover gene that creates "second skeleton" bone disorder

Researchers at the University of Pennsylvania School of Medicine have located the "skeleton key," a gene that, when damaged, causes the body's skeletal muscles and soft connective tissue to undergo a metamorphosis into bone, progressively locking joints in place and rendering movement impossible.

23 Apr 2006

WRN exonuclease structure and molecular mechanism imply an editing role in DNA end processing

A team of scientists from Lawrence Berkeley National Laboratory and the Scripps Research Institute has determined the crystal structure and molecular mechanisms of a key part of WRN, a protein that protects humans from premature aging and cancer.

23 Apr 2006

Genetic data from an island population proves to be a useful tool in understanding disease

With fewer than 4,000 residents, the genetically isolated Micronesian island of Kosrae, in the West Pacific, provides an ideal population in which to research heritability of disease.

20 Apr 2006

New method designed to analyze the genes that regulate the immune system

Seattle scientists have developed a new method for analyzing the Major Histocompatibility Complex (MHC) of the human genome.

20 Apr 2006

Important new global mechanism for gene repression

Most of the time in most cells of the body, the great majority of genes are silenced, locked away within the compacted but orderly material that makes up chromosomes.

18 Apr 2006

217 new targets for anti-cancer drugs

By identifying novel genes critical to cancer progression, biologists at the U.S. Department of Energy's Argonne National Laboratory have expanded the number of drug targets researchers have available for study to find ways to stop tumors in their tracks.

18 Apr 2006

Active ingredient in soy may explain why Asians have lower rates of obesity and cancer

A single nutrient found in soy products elicits changes in gene behavior that permanently reduce an embryo's risk of becoming obese later in life, according to an animal study at Duke University Medical Center.

13 Apr 2006

Researchers identify the role of a protein in hemoglobin gene silencing

Virginia Commonwealth University Massey Cancer Center researchers have identified the role of a protein in hemoglobin gene silencing that may one day be a potential target for the treatment of genetic blood disorders like sickle-cell anemia and beta-thalassemia on the molecular level.

11 Apr 2006

Losartan can prevent progression of Marfan syndrome

A commonly prescribed blood pressure medication may provide the first ray of hope in preventing potentially deadly complications of Marfan syndrome, a genetic disease that weakens the structural meshwork of blood vessels.

11 Apr 2006

Genetic variants in estrogen-related genes linked to Parkinson's disease in women

Mayo Clinic researchers have discovered a possible connection between increased risk for Parkinson's disease and variants in three genes that control estrogen production and activity in the body.

11 Apr 2006

Important advance in understanding the complex interactions between proteins

Interactions between proteins are the engines that drive the lives of cells, and a better understanding of these relationships -- and the structures that enable them -- are the next great frontier in the biological sciences.

10 Apr 2006

Whole genome analysis of the protein kinases from Dictyostelium

The journal PLoS Genetics has published the findings of a team of scientists at the nonprofit Boston Biomedical Research Institute that provides a whole genome analysis of the protein kinases from a scientifically valuable model organism known as Dictyostelium.

10 Apr 2006

Discovery of new human retrovirus

Howard Hughes Medical Institute researchers and their colleagues have discovered a new retrovirus in humans that is closely related to a cancer-causing virus found in mice. Their findings describe the first documented cases of human infection with a retrovirus that is native to rodents.

10 Apr 2006