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Scientists discover molecular structure related to cell growth and cancer

Researchers discovered a special type of molecular structure that helps keep genes properly turned off until the structure is ejected from those genes in a regulated manner to help turn the genes on.

23 Oct 2005

Spliceosome crucial for processing non-coding RNA

The discovery in 1977 that the coding regions of a gene could appear in separate segments along the DNA won the 1993 Nobel Prize in Physiology or Medicine for Richard J. Roberts and Phillip A. Sharp. The active segments of a gene were termed exons, separated from each other within the gene by inactive introns.

20 Oct 2005

"Junk" DNA not important to an organism's evolutionary survival

Genetic material derisively called "junk" DNA because it does not contain the instructions for protein-coding genes and appears to have little or no function is actually critically important to an organism's evolutionary survival, according to a study conducted by a biologist at the University of California, San Diego.

19 Oct 2005

Yeast cells help show how GSAO (glutathionarsenoxide) angiogenesis inhibitor drug works

The humble yeast has revealed the molecular workings of an anti-cancer drug that stops the growth and spread of tumours in humans by starving their blood supply.

18 Oct 2005

Significant step forward in the genome era

In what promises to be a significant step forward in the genome era, the National Human Genome Research Institute (NHGRI) today announced plans to devote a portion of its large-scale sequencing capacity to efforts aimed at identifying the genetic roots of specific diseases that have long eluded gene hunters.

17 Oct 2005

First gene mutation associated with Tourette syndrome

Researchers have identified the first gene mutation associated with Tourette syndrome - opening a new avenue for understanding the complex disorder that causes muscle and vocal tics.

13 Oct 2005

Chromosomes in the nucleus of the cell carry the material of heredity, or genes

Abnormal cell division that yields cells with an extra set of chromosomes can initiate the development of tumors in mice, researchers at Dana-Farber Cancer Institute have shown, validating a controversial theory about cancer causation put forth by a scientific visionary nearly 100 years ago.

12 Oct 2005

Personalized medicine to improve the outcome for breast cancer patients

As cancer remains a leading cause of death in the United States, early detection and treatment are critical keys to improving the survival rate. Yet, an individual's response to treatment varies considerably, even among cancers of the same histological type.

12 Oct 2005

Protein called CPSF73 performs a necessary step in the production of human chromosomes

The study found that a protein called CPSF73 acts like scissors to cut strands of histone messenger RNA (mRNA) in the cell nucleus. This cutting action produces the mRNA needed to create histone proteins that combine with DNA to form chromosomes.

12 Oct 2005

Technique for inserting genes into specific sites on the genome in liver cells

The genes are inserted into non-coding regions of the genome so there is no danger of interfering with the functioning of other genes. Once inserted, the gene remains a permanent part of the cell's genome.

10 Oct 2005

Scientists genetically modify male mosquitoes to express a glowing protein in their gonads - may help control the mosquito population

By providing a way to quickly sex mosquitoes, the advance paves the way for pooling large numbers of sterile males which could be used to control the mosquito population.

9 Oct 2005

Particular versions of the TGFb1 gene are largely responsible for how badly the illness affects patients' lungs

Subtle differences in other genes -- besides the defective gene known to cause the illness cystic fibrosis -- can significantly modify the inherited disease's severity, a large new multi-center national study has concluded.

5 Oct 2005

Most comprehensive picture to date of how influenza viruses evolve and are transmitted

In the first large-scale effort of its kind, researchers have determined the full genetic sequence of more than 200 distinct strains of human influenza virus.

5 Oct 2005

Influenza evolution in action

On the eve of the 2005-06 flu season, scientists at The Institute for Genomic Research (TIGR) have captured influenza evolution in action. In a study published in this week's journal Nature, the researchers report the first large-scale project to sequence the influenza virus.

5 Oct 2005

PET imaging with FDG represents one of the most promising tools for diagnosis of Alzheimer's

Positron emission tomography (PET) imaging--with the radiotracer fluorodeoxyglucose (FDG)--is a promising tool in detecting Alzheimer's disease in patients who have mild cognitive impairment (MCI), according to a study reported in the October issue of the Society of Nuclear Medicine's Journal of Nuclear Medicine.

5 Oct 2005

Largest systematic analysis of duplicated gene function to date

When Mother Nature creates an identical copy of a gene in an organism's genome, the duplicated copy is usually deleted, inactivated, or otherwise rendered nonfunctional in order to prevent genetic redundancy and to preserve biological homeostasis. In some cases, however, gene duplicates are maintained in a functional state.

4 Oct 2005

Discovery establishes a role for the gene Rsf-1 in ovarian cancer

Johns Hopkins Kimmel Cancer Center researchers have linked alterations in a gene, called Rsf-1, to the most deadly ovarian cancers. The scientists say the discovery is the first to establish a role for the gene in ovarian cancer and may lead to a test that can predict, early on, which patients will develop aggressive disease.

3 Oct 2005

New genes tied to lifespan extension

Drastically reducing calorie intake, or caloric restriction, is known to extend the lifespan of species including yeast, worms and rodents. Previous research linked a gene called Sir2 with lifespan extension due to caloric restriction, but worms and yeast that lack Sir2 also live longer when put on a tough diet, showing that some other genes must be at work.

3 Oct 2005

Equine flu virus jumps to dogs

A Cornell University virologist has isolated a highly contagious equine flu virus that is spreading a sometimes-fatal respiratory flu among dogs, and is responsible for a major dog-flu outbreak in New York state. There is no evidence that the virus could infect people.

27 Sep 2005