DNA News and Research

RSS

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).

Genomic disorders occur more frequently than previously thought

Research published today in Nature Genetics shows that some rearrangements of the human genome occur more frequently than previously thought.

3 Dec 2007

Discovery of key lupus gene

Wellcome Trust researchers have identified a key gene involved in the disease Lupus, which affects around 50,000 people in the UK, mostly women.

3 Dec 2007

Genetic testing over the net a waste of money say experts

According to a panel of top British scientists people who buy genetic tests from private companies are usually wasting their money.

3 Dec 2007

First map of imprinted genes in human genome

Scientists at Duke University have created the first map of imprinted genes throughout the human genome, and they say a modern-day Rosetta stone – a form of artificial intelligence called machine learning – was the key to their success.

2 Dec 2007

DNA methylation shown to promote development of colon tumors

Damaged or defective genes have long been known to be the cause of some cancers.

2 Dec 2007

Direct-to-consumer advertising for commercial genetic testing is on the rise and may be problematic

Direct-to-consumer advertising for commercial genetic testing is on the rise and may be problematic, according to a Massachusetts General Hospital (MGH) physician. In the December issue of Obstetrics & Gynecology, Erin Tracy, MD, MPH, warns that such testing is poorly regulated and may present potential pitfalls for patients and physicians.

2 Dec 2007

MicroRNA switches off tumor protection

The microRNA miR-21 suppresses the production of tumor suppressor Pdcd4, which protects cells from cancer development.

29 Nov 2007

Scientists observe gene activity outside the body

Researchers at Jefferson Medical College and Jefferson's Kimmel Cancer Center in Philadelphia have used PET imaging to see hyperactive cancer genes inside breast tumors in laboratory animals, marking the first time such gene activity has been observed from outside the body.

29 Nov 2007

Genetic differences point to ethnic and racial disparities in colorectal cancer risk

Risk of developing colorectal cancer is known to differ across ethnic and racial groups, and now an analysis of 26 studies, involving over 25,000 participants shows that some of these disparities might be explained by distinct patterns of genetic inheritance.

29 Nov 2007

Stem cells train heart following heart attack

Following a heart attack, part of the heart tissue dies. It is still not possible to restore the scar tissue arising as a result of this. The majority of stem cell researchers attempt to make new heart muscle cells from stem cells.

27 Nov 2007

RNA polymerase III mutation disrupts organ growth

The cellular mechanism that turns DNA into all of the thousands of proteins that make up a human body is itself both intricate and interesting.

27 Nov 2007

Scientists examine eons-old water for microorganisms

Researchers from the University of Delaware and the University of California at Riverside have thawed ice estimated to be at least a million years old from above Lake Vostok, an ancient lake that lies hidden more than two miles beneath the frozen surface of Antarctica.

27 Nov 2007

New disease model for Huntington's

Huntington's disease is a genetic time bomb: Programmed in the genes, it appears at a predictable age in adulthood, causing a progressive decline in mental and neurological function and finally death.

27 Nov 2007

New genetic evidence supports theory migration from Siberia gave rise to native peoples of North and South America

Did a relatively small number of people from Siberia who trekked across a Bering Strait land bridge some 12,000 years ago give rise to the native peoples of North and South America?

27 Nov 2007

Alcohol and second-hand smoke a deadly combo

According to a new study the combination of alcohol and second-hand smoke can cause damage to the heart.

26 Nov 2007

Tiny DNA molecules show liquid crystal phases, pointing to new scenario for first life on earth

A team led by the University of Colorado at Boulder and the University of Milan has discovered some unexpected forms of liquid crystals of ultrashort DNA molecules immersed in water, providing a new scenario for a key step in the emergence of life on Earth.

22 Nov 2007

First genome sequence of XDR strain of the bacterium Mycobacterium tuberculosis

An international collaboration led by researchers in the US and South Africa today announced the first genome sequence of an extensively drug resistant (XDR) strain of the bacterium Mycobacterium tuberculosis, one linked to more than 50 deaths in a recent tuberculosis (TB) outbreak in KwaZulu-Natal, South Africa.

21 Nov 2007