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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).

Newly diagnosed non-Hodgkin’s lymphoma linked to monkey virus DNA

Examination of tumors in patients with newly diagnosed non-Hodgkin’s lymphoma found that half of them show evidence of a monkey virus DNA that may have originated from contaminated polio vaccines.

30 Mar 2004

Extraction of RNA from Archived Formalin-Fixed, Paraffin-Embedded Tissue

For the first time, Fox Chase Cancer Center researchers have demonstrated the ability to extract RNA from formalin-fixed, paraffin-embedded tissue samples archived for up to five years. What's more, the technology used retrieves high-quality samples, allowing researchers to identify cancer-related genetic changes. Accepted as a "late-breaking" abstract, the research was presented today at the 95th Annual Meeting of the American Association for Cancer Research by Renata Coudry, M.D., a research pathologist at Fox Chase Cancer Center.

30 Mar 2004

Method of Bone Analysis May Clarify Human Origins

Bones, it is said, tell tales, but in the case of the bones of hominids or human ancestors the story has become complex and convoluted, as paleoanthropologists try to decipher relationships between a host of similar species with subtly shifting characteristics in a spotty fossil record.

30 Mar 2004

New research to predict patient response to cancer chemotherapies

Timothy J. Yeatman, M.D., Moffitt's Associate Center Director for Clinical Investigations at the H. Lee Moffitt Cancer Center & Research Institute, and the Sarasota-based DNAPrintTM genomics, Inc., have formed a joint research program to develop and implement new clinical tests for predicting patient response to cancer chemotherapies.

29 Mar 2004

Comparative genomics to cast new light on other spirochete microbes

Three centuries after a pioneering Dutch microbiologist first observed the spiral-shaped oral pathogen Treponema denticola, scientists have deciphered the bacterium’s entire DNA sequence and used comparative genomics to cast new light on other spirochete microbes.

29 Mar 2004

Earlier detection of cancer with Transgenomic's WAVE(R) system

Transgenomic Inc. has announced that during the American Association of Cancer Research annual meeting currently underway in Orlando, several of its customers from major research institutions worldwide will present results in which the Company's WAVE System has played an important role.

29 Mar 2004

Three of the world’s top women chemists visit UK to inspire young scientists

Three of the world’s top women chemists are visiting the UK this week (29 March - 2 April) to tour institutions and talk about their research with the aim of inspiring young scientists to emulate their achievements. The inaugural Rosalind Franklin International Lectureship Programme has been masterminded by Professor Susan Gibson, Imperial College London, who funded the initiative with her prize money from the Royal Society Rosalind Franklin Award.

29 Mar 2004

A simple dietary supplement may also help to prevent strokes

A simple dietary supplement may not only give relief to some of the more than 400,000 New Zealanders that suffer from the pain of migraine headaches, but may also help to prevent strokes.

28 Mar 2004

Renowned researchers, scientists share advances in prevention, diagnosis, therapy

Leading researchers are gathering today for the 95th Annual Meeting of the American Association for Cancer Research (AACR), the premier multidisciplinary assembly, which features the latest developments in basic, prevention, translational and clinical cancer research. The meeting occurs from March 27 – 31, 2004 at the Orlando Convention Center, Fla.

27 Mar 2004

p53 protein peptide stops cancer in its tracks

Researchers have dreamed of thwarting cancer by using proteins that halt cell growth and kill the tumor. In theory, the approach should work. In practice, however, scientists have not had an easy time of getting tumor suppressor proteins into cells where they can block growth effectively.

26 Mar 2004

Researchers turn off individual human genes to study their function

Researchers have produced vast libraries of short segments of ribonucleic acid (RNA) that can be used to turn off individual human and mouse genes to study their function. The libraries will be made widely available to laboratories studying human biology and disease. The researchers are optimistic that the libraries will become a powerful research tool for gene analysis and discovery.

25 Mar 2004

New Research Information on Tumor Necrosis Therapy

Researchers for Peregrine Pharmaceuticals presented today at the Strategic Research Institute’s Clinical-Stage Product Partnering Summit in La Jolla, CA a summary of clinical experience with Tumor Necrosis Therapy (TNT). The TNT technology is being developed in the U.S. and Europe by Peregrine under the trade name Cotara™. Over 200 patients have been treated with TNT world-wide and a TNT product has been approved to treat grade III or IV advanced lung cancer in the People’s Republic of China. A Cotara registration study for brain cancer has been approved by the U.S. Food and Drug Administration, and a Phase I colorectal cancer study is on-going at Stanford University Medical Center.

25 Mar 2004

Discovery of new gene sheds light on human brain development

With the identification of the gene responsible for a newly recognized type of mental retardation, researchers at Beth Israel Deaconess Medical Center (BIDMC) have also discovered what appears to be the key target in the evolution of the frontal lobes of the brain's cerebral cortex. The findings offer a key insight into the complex puzzle of human brain development - and the evolution of human behavior.

25 Mar 2004

A debate over the origins of what is sometimes called "junk" DNA has been settled

A debate over the origins of what is sometimes called "junk" DNA has been settled by research involving scientists at the Center for Advanced Research in Biotechnology (CARB) and a collaborator, who developed rigorous proof that these mysterious sections were added to DNA "late" in the evolution of life on earth, after the formation of modern-sized genes, which contain instructions for making proteins.

25 Mar 2004

Study tracks behaviour changes in Alzheimer sufferers

Alzheimer’s sufferers are having their DNA measured and behaviour monitored to pinpoint who is most at risk from developing behaviour problems from dementia.

24 Mar 2004

Tiny Ribozyme package could be future treatment of Hepatitis B virus

Penn State College of Medicine researchers have developed a tiny package that searches for and destroys up to 80 percent of hepatitis B virus in the livers of mice.

22 Mar 2004

DNA repair enzymes to fight cancer

The body has a set of DNA repair enzymes that clean up damage to the genome, to reduce potential problems. Many commonly used cancer chemotherapies work by alkylating DNA. However, the DNA repair enzymes are just as capable of repairing this alkylation as if it were damage from any other source, and so they act to overcome the effects of the therapy, reducing its effectiveness.

22 Mar 2004

Breast feeding increases choline which means more brain cells

Five years ago, University of North Carolina at Chapel Hill researchers first reported finding that the nutrient choline played a critical role in memory and brain function by positively affecting the brain’s physical development. Differences in development influenced action, the scientists and their colleagues found. In animal experiments conducted at Duke University, both young and old rats performed significantly better on memory tasks if they received enough choline before birth compared with same-age rats whose mothers were fed choline-deficient diets. The latter showed deficits in the hippocampus and septums of their brains.

22 Mar 2004

Lupus Discovery May Lead To Improved Drugs

In an important development in the treatment of lupus as well as certain cancers, scientists at the Feinberg School of Medicine at Northwestern University have discovered how autoimmune lupus T cells stave off programmed cell death and drive production of autoantibodies directed against the body’s own DNA.

22 Mar 2004

New microchip manipulates DNA and protein molecules

A Johns Hopkins undergraduate has constructed a new type of microchip that can move and isolate DNA and protein molecules. He believes that by linking the chip with analysis equipment, a user could identify medical ailments, monitor a patient's health or detect viruses and other biohazards before they spread.

22 Mar 2004