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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).

Silent fungus metabolism awakened for source of new drugs

U.S. scientists have re-awakened 'silent' metabolic pathways in fungi to reveal a new range of natural products. The research could provide not only a source of new drugs, but a way to "listen to what fungi are saying" to organisms around them.

30 Apr 2008

Mothers and offspring can share cells throughout life - with positive and negative effects

Cutting the umbilical cord doesn't necessarily sever the physical link between mother and child. Many cells pass back and forth between the mother and fetus during pregnancy and can be detected in the tissues and organs of both even decades later. This mixing of cells from two genetically distinct individuals is called microchimerism. The phenomenon is the focus of an increasing number of scientists who wonder what role these cells play in the body.

30 Apr 2008

First sequence-based map of large-scale structural variation across the human genome

A nationwide team of researchers, funded in part by the National Human Genome Research Institute (NHGRI), part of the National Institutes of Health (NIH), has produced the first sequence-based map of large-scale structural variation across the human genome. The work, published today in the journal Nature, provides a starting point to examine how such DNA variation contributes to human health and disease.

30 Apr 2008

Making GNA for nanotechnology

In the rapid and fast-growing world of nanotechnology, researchers are continually on the lookout for new building blocks to push innovation and discovery to scales much smaller than the tiniest speck of dust.

29 Apr 2008

Scientists discover 4th major set of common genetic variants linked to risk of estrogen receptor-positive breast cancer

Scientists from deCODE genetics report the discovery of two common single-letter variants (SNPs) on chromosome 5 of the human genome that are associated with risk of estrogen receptor-positive (ER+) breast cancer.

27 Apr 2008

Epigenetic research uncovers new targets for modification enzymes

Enzymes regulating genetic expression can be just as important as the genome itself, increasing evidence shows.

27 Apr 2008

DNA vaccines may offer hope in multiple sclerosis

Authors from the VA North Texas Health Care System Neurology Section and the Department of Neurology at the University of Texas Southwestern Medical Center at Dallas have highlighted the potential benefits for DNA-based vaccine administration in patients with multiple sclerosis (MS).

24 Apr 2008

New insights into early history of human populations before they moved out of Africa

A team of Genographic researchers and their collaborators have published the most extensive survey to date of African mitochondrial DNA (mtDNA).

24 Apr 2008

FSU research may speed new malaria treatments, vaccines for children

April 25 is World Malaria Day 2008 and despite the grim statistics out of Africa there's cause for celebration. Florida State University biologists have discovered an autoimmune-like response in blood drawn from malaria-infected African children that helps to explain why existing DNA-based anti-malaria vaccines have repeatedly failed to protect them.

23 Apr 2008

Researchers unravel heparin death mystery

An international team of researchers led by MIT has explained how contaminated batches of the blood-thinner heparin were able to slip past traditional safety screens and kill dozens of patients recently in the United States and Germany.

23 Apr 2008

Rethink needed on how communities affected with trachoma are treated

One or two rounds of high coverage mass treatment with azithromycin, rather than the annual treatment recommended by the World Health Organisation, may be enough to eliminate the eye disease trachoma in communities with moderate levels of infection.

23 Apr 2008

Scientists determine molecular structures of bacterial AlkB protein and its corresponding human protein, ABH2

A team of University of Chicago scientists has shown how two proteins locate and repair damaged genetic material inside cells.

23 Apr 2008

Discovery of gene behind clefting disorder Branchio-Oculo-Facial syndrome

In a collaborative effort, researchers from Boston University School of Medicine (BUSM) have discovered that deletions or mutations within the TFAP2A gene (Activating Enhancer-Binding Protein) result in the distinctive clefting disorder Branchio-Oculo-Facial syndrome (BOFS).

23 Apr 2008

Scientists solve mystery about critical mechanism of gene expression

Although letters representing the three billion pairs of molecules that form the "rungs" of the helical DNA "ladder" are routinely called the human "genetic code," the DNA they comprise transmits traits across generations in a variety of ways, not all of which depend on the sequence of letters in the code.

22 Apr 2008

Mechanism discovered that can send cells on the road to cancer

Using a common virus as a tool for investigating abnormal cell proliferation, a team led by scientists at Cold Spring Harbor Laboratory (CSHL) has succeeded in clarifying an intricate series of biochemical steps that shed light on a way that cancer can begin.

22 Apr 2008

New advance in use of oncolytic viruses as novel cancer treatments

Combining a herpes virus genetically altered to express a drug-enhancing enzyme with a chemotherapy drug effectively and safely reduced the size of highly malignant human sarcoma grafted into mice.

22 Apr 2008

Discovery of gene that may influence metastasis risk in breast cancer

Researchers have identified a pattern of gene activity in mice that may help to predict individual risk for breast cancer metastasis and survival in humans. A single gene, called bromodomain 4 (Brd4), regulates the expression of this pattern, also called a signature.

22 Apr 2008

Lorus initiates development program exploring novel route of administration for LOR-2040

Lorus Therapeutics Inc. today announced the start of a development program aimed at expanding the therapeutic application of its lead clinical-stage drug LOR-2040 for the treatment of superficial bladder cancer.

22 Apr 2008

Cancer could return unless stored ovarian tissue undergoes adequate testing before re-implantation

Cancer patients who have been successfully treated for their disease face the prospect of its return if stored ovarian (or testicular) tissue is transplanted back into their bodies without adequate checks, according to researchers at two university hospitals in Israel.

21 Apr 2008