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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).

Researchers identify new genetic regions associated with heart attacks

In the largest genetic study of Coronary Artery Disease (CAD) to date, researchers from the CARDIoGRAMplusC4D Consortium report the identification of 15 genetic regions newly associated with the disease, bringing to 46 the number of regions associated with CAD risk.

3 Dec 2012

Childhood trauma can leave permanent epigenetic marks on DNA

Abused children are at high risk of anxiety and mood disorders, as traumatic experience induces lasting changes to their gene regulation. Scientists from the Max Planck Institute of Psychiatry in Munich have now documented for the first time that genetic variants of the FKBP5 gene can influence epigenetic alterations in this gene induced by early trauma.

3 Dec 2012

Scientists identify 15 new genetic regions associated with coronary artery disease

Fifteen new genetic regions associated with coronary artery disease have been identified by a large, international consortium of scientists - including researchers at the Stanford University School of Medicine - taking a significant step forward in understanding the root causes of this deadly disease. The new research brings the total number of validated genetic links with heart disease discovered through genome-wide association studies to 46.

3 Dec 2012

Children with changes in bully genes have poor survival

In a genome sequencing study of 74 neuroblastoma tumors in children, scientists at the Johns Hopkins Kimmel Cancer Center and the Children's Hospital of Philadelphia (CHOP) found that patients with changes in two genes, ARID1A and ARID1B, survive only a quarter as long as patients without the changes. The discovery could eventually lead to early identification of patients with aggressive neuroblastomas who may need additional treatments.

3 Dec 2012

Scientists sequence DNA of biopsied tissue from colon polyps

The causes underlying the development of certain types of common cancers have not yet been elucidated. In order to better determine the origin and the sequence of events responsible for the onset of colon cancer, the teams led by Thanos Halazonetis and Stylianos Antonarakis, professors at the University of Geneva (UNIGE), Switzerland, have sequenced the DNA of biopsied tissue from colon polyps.

2 Dec 2012

Researchers uncover molecular structure of master regulator central to melanoma

With the X-ray vision of DESY's light source DORIS, a research team from Hamburg and Iceland has uncovered the molecular structure of a master regulator central to the most deadly form of skin cancer, melanoma.

1 Dec 2012

New genetic study defines biology behind brain developmental disorder in children

This study describes how a combination of sequencing and mouse models were used to identify the gene responsible for a brain developmental disorder seen in four patients.

1 Dec 2012

Reduced production of myelin may play role in development of mental illness: Study

Reduced production of myelin, a type of protective nerve fiber that is lost in diseases like multiple sclerosis, may also play a role in the development of mental illness, according to researchers at the Graduate School of Biomedical Sciences at Mount Sinai School of Medicine.

1 Dec 2012

New insights into relationship between autoimmunity and brain function

A study published in the current issue of Psychotherapy and Psychosomatics by a group of French investigators of the University of Paris unravels new insights as to the relationship between autoimmunity and brain function.

30 Nov 2012

New insights into POT-1/TTP-1 protein complex

New insights into a protein complex that regulates the very tips of chromosomes could improve methods of screening anti-cancer drugs.

30 Nov 2012

New detection method can identify genetic switches associated with breast cancer

Physicians may now be better at detecting breast cancer than ever before, but much more work remains to ensure accurate diagnosis is possible and especially to assess future risk. That's why researchers from Germany have been working to develop a new test of gene action to predict cancer risk both at first diagnosis and into the future.

30 Nov 2012

UBE3B gene linked to brain development disorder in children

Researchers have defined the gene responsible for a rare developmental disorder in children. The team showed that rare variation in a gene involved in brain development causes the disorder. This is the first time that this gene, UBE3B, has been linked to a disease.

30 Nov 2012

Ponatinib thwarts T315I gene mutation in chronic myeloid leukemia

A previously invincible mutation in chronic myeloid leukemia (CML) has been thwarted by an investigational drug in a phase I clinical trial reported in the current edition of The New England Journal of Medicine.

29 Nov 2012

Combination of blood test and whole-genome sequencing technology could screen cancers

Scientists at the Johns Hopkins Kimmel Cancer Center have combined the ability to detect cancer DNA in the blood with genome sequencing technology in a test that could be used to screen for cancers, monitor cancer patients for recurrence and find residual cancer left after surgery.

29 Nov 2012

DLKI-DIO3 miRNA cluster suppresses spread of cancer from its primary site

Scientists from the Florida campus of The Scripps Research Institute (TSRI) have uncovered a group of what have been considered relatively minor regulators in the body that band together to suppress the spread of cancer from its primary site.

29 Nov 2012

Majority of parents with autistic child show interest in having genetic tests

The vast majority (80 percent) of parents with at least one child with Autism Spectrum Disorder (ASD) would pursue genetic testing if a test were available that could identify risk in a younger sibling, citing the desire for earlier identification of children at risk, earlier evaluation and intervention, closer monitoring and lessened anxiety.

29 Nov 2012

New antifungal drugs could be developed based on substance bacteria use to decompose mushrooms

Soft rot diseases cause a great deal of damage in agriculture, and turn fruits, vegetables, and mushrooms to mush. By using imaging mass spectrometry together with genetic and bioinformatic techniques (genome mining), German researchers have now discovered the substance the bacteria use to decompose mushrooms.

29 Nov 2012