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DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

US-German team studies genome mutations

"While the long term effects of genome mutations are quite well understood, we did not know how often new mutations arise in the first place," said Detlef Weigel, director at the Max Planck Institute in Germany. It is routine today to compare the genomes of related animal or plant species.

3 Jan 2010

Final results of Maxygen's modified "Dutch Auction" tender offer announced

Maxygen, Inc., a biopharmaceutical company focused on the development of improved versions of protein drugs, today announced the final results of its modified "Dutch Auction" tender offer, which expired at 5:00 p.m., New York City time, on December 23, 2009.

31 Dec 2009

Scientists discover a new family of giant virus

After Mimivirus, Mamavirus and the virophage, the group of giant viruses now has a new member called Marseillevirus. Discovered in an amoeba by the team led by Didier Raoult at the Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes research group (CNRS/Université Aix-Marseille 2), a description of this new virus was published this week on the website of the Proceedings of the National Academy of Sciences (PNAS).

31 Dec 2009

Study suggests genetic variations predispose African-Americans to diabetes

For years, scientists have tried to determine the basis for discrepancies between race and the predisposition for development of diseases such as type II diabetes and cardiovascular disease. Could factors such as differences in lifestyle or access to health care play a role, or is there something else in play?

29 Dec 2009

CtIP protein plays a critical role in DNA repair

La Jolla, CA-In order to preserve our DNA, cells have developed an intricate system for monitoring and repairing DNA damage. Yet precisely how the initial damage signal is converted into a repair response remains unclear. Researchers at the Salk Institute for Biological Studies have now solved a crucial piece of the complex puzzle.

28 Dec 2009

Study suggests Fanconi Anemia and Bloom's Syndrome proteins may act in common DNA repair pathway

A new study establishes a molecular link that bridges two rare inherited disorders and explains why these diseases result in genetic instability. The research, published by Cell Press in the December 24th issue of the journal Molecular Cell, may lead to a better understanding of the complex mechanisms that enable cells to repair damaged DNA.

28 Dec 2009

Disinfectants can promote growth of antibiotic-resistant bacteria

Using disinfectants could cause bacteria to become resistant to antibiotics as well as the disinfectant itself, according to research published in the January issue of Microbiology.

28 Dec 2009

Researchers at Stanford University School of Medicine identify a critical component, Jarid2

Like a child awaiting the arrival of Christmas, embryonic stem cells exist in a state of permanent anticipation. They must balance the ability to quickly become more specialized cell types with the cellular chaos that could occur should they act too early (stop shaking those presents, kids!).

28 Dec 2009

Test tube experiments show slight changes in protein chemistry can eliminate Huntington's disease in mice

In Huntington's disease, a mutated protein in the body becomes toxic to brain cells. Recent studies have demonstrated that a small region adjacent to the mutated segment plays a major role in the toxicity. Two new studies supported by the National Institutes of Health show that very slight changes to this region can eliminate signs of Huntington's disease in mice.

28 Dec 2009

Bacterial DNA reveals a rise in antibiotic resistant genes

Antibiotic resistance in the natural environment is rising despite tighter controls over our use of antibiotics in medicine and agriculture, Newcastle University scientists have found.

24 Dec 2009

Gene's role in immune system may suggest new treatments for childhood asthma

Pediatric researchers have identified a novel gene involved in childhood asthma, in one of the largest gene studies to date of the common respiratory disease. Because the gene, called DENND1B, affects cells and signaling molecules thought to be instrumental in the immune system overreaction that occurs in asthma, the discovery may have singled out an important target for new treatments.

23 Dec 2009

Scientists use DNA sequence to characterize genome rearrangement in breast cancer samples

The first detailed search of breast cancer genomes to uncover genomic rearrangements is published today. The team characterised the ways in which the human genome is broken and put back together in 24 cases of breast cancer.

23 Dec 2009

Nationwide Children's Hospital chosen as a BCR for TCGA

Nationwide Children's Hospital recently was awarded an initial $5.5 million contract from the National Cancer Institute (NCI) to serve as a Biospecimen Core Resource (BCR) for The Cancer Genome Atlas (TCGA), a program co-managed by the NCI and the National Human Genome Research Institute (NHGRI), both part of the National Institutes of Health (NIH).

23 Dec 2009

Autism study and gene therapy in vision are top scientific achievements in 2009

A landmark autism study and a dramatic success for gene therapy in reversing inherited blindness, both at The Children's Hospital of Philadelphia, were recognized among the top scientific achievements in 2009, according to three national publications: Time magazine, Discover magazine and the journal Science.

23 Dec 2009

Study on cyanobacteria helps understand anesthetic actions

Experiments in one of the oldest forms of life on Earth are helping to answer basic questions about how general anesthesia works, according to a study in the January issue of Anesthesia & Analgesia, official journal of the International Anesthesia Research Society (IARS).

23 Dec 2009

Enzyme dCK plays a profound role in normal lymphocyte development

Mice without the deoxycytidine kinase (dCK) enzyme have defects in their adaptive immune system, producing very low levels of both T and B lymphocytes, the major players involved in immune response, according to a study by researchers with UCLA's Jonsson Comprehensive Cancer Center.

23 Dec 2009

NHLBI grant for identifying genetic and epigenetic causes of human congenital heart disease

Researchers at Children's Hospital Boston and Brigham and Women's Hospital have received funding from the National Heart, Lung, and Blood Institute (NHLBI) to support their search for undiscovered gene defects that cause congenital heart disease. The $4.19 million, 6-year grant is part of the Pediatric Cardiac Genomics Consortium (PCGC), which seeks to identify genetic and epigenetic causes of human congenital heart disease, and relate genetic variants present in the congenital heart disease patient population to clinical outcomes.

23 Dec 2009

Trabectedin now available for patients with advanced soft tissue sarcoma

Patients with a rare form of cancer called advanced soft tissue sarcoma could now benefit from a new drug called trabectedin, after the National Institute for Health and Clinical Excellence (NICE) approved the drug for NHS use.

23 Dec 2009

LadaTech files patent infringement lawsuit against Illumina

LadaTech announced today that it has served its complaint upon Illumina, Inc. in its lawsuit for patent infringement in the United States District Court for the District of Delaware. LadaTech is jointly owned by GlaxoSmithKline and IP Finance Holdings.

From Illumina, Inc. 22 Dec 2009

New project analyzes genetic sequence and variations of every gene expressed by 1,000 tumors

No two tumors are alike, but analyzing the genetics of cancers from different parts of the body may reveal surprising details useful for treatment and prevention.

22 Dec 2009