DNA News and Research

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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).

Smallpox evolved earlier than believed

Smallpox is older than thought, according to results of a new technique reported in the Sept. 24 issue of the Proceedings of the National Academy of Sciences by researchers from Lawrence Livermore National Laboratory and the Centers for Disease Control (CDC).

27 Sep 2007

The jury is in: microRNAs can cause tumors to metastasize

These tiny molecules fine-tune protein production and play a powerful role in biological processes ranging from development to aging. Now scientists have proved that they can prompt otherwise sedentary cancer cells to move and invade other tissues.

27 Sep 2007

Transposons could make for safer gene delivery system

To move a gene from point A to point B, scientists and gene therapists have two proven options: a virus, which can effectively ferry genes of interest into cells, and a plasmid, an engineered loop of DNA that can do the same thing, albeit usually only on a short-term basis.

27 Sep 2007

Snake venom composition may change according to the victim

A snake's intended prey might affect the type and evolution of toxins in their venom, research published in the online open access journal BMC Evolutionary Biology shows.

27 Sep 2007

HPV is related to bladder cancer

The Human Papillomavirus (HPV) is considered the cause of one of the most important sexually transmitted diseases nowadays, and affects both men and women.

26 Sep 2007

Mutation of the COX2 gene can double or treble a woman's risk of ovarian cancer

Researchers in Portugal have discovered that a specific mutation of the COX2 gene seems to play a role in the onset of ovarian cancer, increasing women's susceptibility to developing the disease.

26 Sep 2007

New bioengineered antimicrobials help cystic fibrosis patients breathe easier

By better understanding how antimicrobials bind and thereby get inactivated in the mucus of air passages, researchers at the University of Illinois may have found a way to help cystic fibrosis patients fight off deadly infections.

25 Sep 2007

Scientists capture first optical images of carbon nanotubes inside a living organism

Using fruit flies, the researchers confirmed that a technique developed at Rice -- near-infrared fluorescent imaging -- was capable of detecting DNA-sized nanotubes inside living fruit flies.

25 Sep 2007

The cell size problem

For more than 100 years, scientists have tried to figure out the cell size problem: How does a cell know when it is big enough to divide?

25 Sep 2007

Experts discuss pioneering non-invasive test to determine the blood type of unborn babies

Experts from across the world will meet to discuss the implementation of a pioneering non-invasive test to determine the blood type of unborn babies at an event hosted by the University of Warwick.

25 Sep 2007

Trop-2 new target for anti-tumour therapy in cancer

Italian scientists announced (Monday September 24) that they have found a new and promising target for anti-tumour therapy in cancer.

25 Sep 2007

BioNanomatrix issued new nanofluidics patent

The patent covers a novel technique for the integration of nanofluidic channels with sample delivery systems, enabling single molecules of DNA, RNA or other proteins to be separated out from standard laboratory samples for direct imaging and analysis.

25 Sep 2007

Nano device provides quick test for bird flu

A team of scientists from Singapore's Institute of Bioengineering and Nanotechnology have come up with a new test which can quickly detect the deadly H5N1 bird flu virus.

24 Sep 2007

Scientists say fewer calories equals longer life

Even though scientists already knew at least as far as animals are concerned, that reducing the calorie intake was linked to longevity, they never really knew why.

24 Sep 2007

Researchers pinpoint when a cell is ready to reproduce

For more than 100 years, scientists have tried to figure out the cell size problem: How does a cell know when it is big enough to divide, In research conducted in budding yeast ( Saccharomyces cerevisiae ), scientists at Rockefeller University have now identified the cellular event that marks the moment when a cell knows it is big enough to commit to cell division and spawn genetic replicas of itself.

24 Sep 2007

Genetic cause discovered for systemic lupus erythematosus

Mutations in a gene researchers call TREX1 is one cause for systemic lupus erythematosus (SLE), a severe and incurable autoimmune disease.

24 Sep 2007

Framingham Heart Study 100K result published

BioMed Central has announced that 17 research articles carried out using genetic data from the Framingham Heart Study (FHS), are being published as a supplement to BMC Medical Genetics.

23 Sep 2007

When biological molecules kiss, a new kind of biosensor can tell

A new and deceptively simple technique has been developed by chemists at Vanderbilt University that can measure the interactions between free-floating, unlabeled biological molecules including proteins, sugars, antibodies, DNA and RNA.

21 Sep 2007

Process of necrosis redefined in landmark study

A new study led by investigators from the University of Pittsburgh School of Medicine demonstrates that the process of necrosis, long thought to be a chaotic, irreversible pathway to cell death, may actually be triggered as part of a regulated response to stress by a powerful protein, SRP-6, that can potentially halt necrosis in its path.

21 Sep 2007

Genes for osteoporosis

Researchers at Hebrew SeniorLife's Institute for Aging Research (IFAR) have examined close to 100,000 genetic markers for low bone mass and aging to help determine which genes are responsible for the development of osteoporosis and longevity.

21 Sep 2007