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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).

Common gene disorder doubles risk of lung cancer, even among nonsmokers

Mayo Clinic researchers have found that carrying a common genetic disorder doubles the risk of developing lung cancer in smokers and nonsmokers.

26 May 2008

Link between HPV and cervical cancer

Scientists in the United States have carried out a review of research to determine the link between persistent HPV (human papillomavirus) infection and cervical cancer.

25 May 2008

The emerging role of infection in Alzheimer’s

A number of chronic diseases are in fact caused by one or more infectious agents. For example, stomach ulcers are caused by Helicobacter pylori, chronic lung disease in newborns and chronic asthma in adults are both caused by Mycoplasmas and Chlamydia pneumonia, while some other pathogens have been associated with atherosclerosis. The realization that pathogens can produce slowly progressive chronic diseases has opened new lines of research into Alzheimer's disease.

25 May 2008

An alternative strategy for HIV vaccine research

Today, Advanced BioScience Laboratories, Inc. (ABL) and the University of Massachusetts Medical School (UMMS) report that their unique HIV vaccine formulation was effective in eliciting strong and balanced immune responses in healthy human volunteers.

22 May 2008

Research shows protecting p53 from degradation also defends metastasis-promoter

Efforts to protect the tumor-suppressor p53 could just as easily shelter a mutant version of the protein, causing cancer cells to thrive and spread rather than die, according to research by scientists at The University of Texas M. D. Anderson Cancer Center reported in the current issue of the journal Genes and Development.

22 May 2008

Yerkes researchers develop first transgenic nonhuman primate model of Huntington's disease

In the first study of its kind, researchers at the Yerkes National Primate Research Center, Emory University, in collaboration with researchers from the Department of Human Genetics at Emory's School of Medicine, have developed the first transgenic nonhuman primate model of Huntington's disease (HD), one of the most devastating human neurodegenerative diseases.

22 May 2008

Real-time observation of the DNA-repair mechanism

For the first time, researchers at Delft University of Technology have witnessed the spontaneous repair of damage to DNA molecules in real time.

22 May 2008

NCI scientists visualize gene regulation in living cells

A research team led by scientists at the National Cancer Institute (NCI), part of the National Institutes of Health (NIH), has applied advanced imaging methods and computer simulations to be able to glance at the regulation of a cancer-related gene in a living cell. They found that the efficiency with which the components of the cell's gene reading machinery come together has an impact on gene expression, the process by which a gene translates its information into a new protein. The findings, published in the May 23, 2008 issue of Molecular Cell, shed new light on the means by which living cells regulate gene activity.

22 May 2008

DNA modification seen in colorectal tumors helps predict outcomes, John Wayne Cancer Institute researchers find

An international study led by researchers at the John Wayne Cancer Institute at Saint John's Health Center has found that modifications to DNA found on multiple chromosomes in tumors can help to predict outcomes in patients with early-stage rectal cancer.

21 May 2008

New prognostic markers for gastric cancer patients

In standard clinical settings, DNA microarrays are currently unsuitable for routine use. Prognostic classification on formalin-fixed paraffin-embedded tissues is required. In this study, we looked for new molecular markers for identifying the prognosis of gastric cancer patients.

20 May 2008

Plant flavonoid luteolin reduces inflammatory response in the brain

Researchers at the University of Illinois report this week that a plant compound found in abundance in celery and green peppers can disrupt a key component of the inflammatory response in the brain. The findings have implications for research on aging and diseases such as Alzheimer's and multiple sclerosis.

20 May 2008

First-born children are at higher risk of developing asthma and allergies due to pregnancy conditions

First-born children are at higher risk of developing asthma and allergy because of different conditions they experience in the uterus, according to new research from the Isle of Wight in the United Kingdom, which will be presented at the American Thoracic Society's 2008 International Conference in Toronto on Wednesday, May 21.

20 May 2008

Extinct Tasmanian tiger genes shown to function in a mouse

Researchers from the University of Melbourne, Australia, and the University of Texas, USA, have extracted genes from the extinct Tasmanian tiger (thylacine), inserted it into a mouse and observed a biological function - this is a world first for the use of the DNA of an extinct species to induce a functional response in another living organism.

20 May 2008

Genes may control risk of contracting deadly skin cancer

A study carried out by an international team of scientists has revealed that a person's genes may control their risk of contracting a deadly skin cancer.

19 May 2008

A transgenic monkey model of Huntington's disease developed

Scientists have developed the first genetically altered monkey model that replicates some symptoms observed in patients with Huntington's disease, according to a new study funded by the National Institutes of Health. Researchers are now able to better understand this complex, devastating and incurable genetic disorder affecting the brain.

19 May 2008

DNA vaccines boosted by dendritic cells

The concept sounds ideal: vaccines made of DNA that could be taken in by other cells and give instructions for how to fight off different diseases. The reality, however, has fallen short. Although DNA vaccines have been around for about 15 years and shown lots of promise for HIV, SARS and influenza vaccines during preclinical testing in mice, researchers have yet to make them potent enough to be helpful in humans.

18 May 2008

Study implicates 350 gene regions in cancer development in the mouse

A large genetic study in mice has identified hundreds of genes involved in the development of cancer by examining the DNA of more than 500 lymphomas to find the cancer causing mutations.

15 May 2008

Discovery of 250 new genes potentially involved in leukemia

Researchers have found over 250 new genes that are potentially involved in the development of leukemia. The research was performed in close collaboration between the Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital (Amsterdam, The Netherlands) and the Wellcome Trust Institute (Cambridge, UK) and will be published in the Friday May 16th issue of the scientific journal Cell.

15 May 2008

Australian scientists use gene technology to improve IVF treatment

Research by a team of Australian scientists promises to improve the fertility treatment in vitro fertilisation (IVF).

15 May 2008

Scientists unravel how smoking causes cancer

Scientists have for the first time pinpointed a protein that explains how smoking can directly lead to genetic changes that cause cancer - research published in the British Journal of Cancer reveals.

15 May 2008