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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).

New findings establish connection between microRNAs and cellular metabolism

New findings establish a connection between microRNAs and cellular metabolism, suggesting that a drug designed to inhibit these tiny molecules -- once considered to be "junk" DNA -- would have a positive effect against obesity.

7 Sep 2012

Clathrin protein plays a key role in cell division

A protein called "clathrin," which is found in every human cell and plays a critical role in transporting materials within them, also plays a key role in cell division, according to new research at the University of California, San Francisco.

7 Sep 2012

Researchers discover genetic cause of hereditary spastic ataxia

Researchers from the Guy Rouleau Laboratory affiliated with the CHUM Research Centre and the CHU-Sainte-Justine Research Centre have discovered the genetic cause of a rare disease reported only in patients originating from Newfoundland: hereditary spastic ataxia (HSA).

7 Sep 2012

Reduced NF-κB expression linκed to postradiation oral mucosa vulnerability

The fragility of oral mucosa after radiotherapy for oral squamous cell carcinoma may be due to the inhibition of the DNA transcriptor protein nuclear factor κappa-light-chain-enhancer of activated B cells, show study findings.

6 Sep 2012

Harvard experts create biocompatible hydrogel

A team of experts in mechanics, materials science, and tissue engineering at Harvard have created an extremely stretchy and tough gel that may pave the way to replacing damaged cartilage in human joints.

6 Sep 2012

Scientists complete comprehensive map of genetic mutations linked to small cell lung cancers

Scientists have completed a comprehensive map of genetic mutations linked to an aggressive and lethal type of lung cancer.

6 Sep 2012

New approach can help researchers study genetic variations associated with disease

With the ability to sequence human genes comes an onslaught of raw material about the genetic characteristics that distinguish us, and wading through these reserves of data poses a major challenge for life scientists. Researchers at Roswell Park Cancer Institute (RPCI) and the Center for Human Genome Variation at Duke University Medical Center (DUMC) have developed an approach for analyzing data that can help researchers studying genetic factors in disease to quickly cull out relevant genetic patterns and identify variants that lead to particular disorders.

6 Sep 2012

Researchers identify HIF2α gene mutation in cancer tumor cells

For the first time, a mutation in HIF2α, a specific group of genes known as transcription factors that is involved in red blood cell production and cell metabolism, has been identified in cancer tumor cells.

6 Sep 2012

CSHL publishes genome-wide analysis of transcripts produced within human cells

Most people understand genes to be specific segments of DNA that determine traits or diseases that are inherited. Textbooks suggest that genes are copied into RNA molecules, which are then used as templates for making protein - the highly diverse set of molecules that act as building blocks and engines of our cells. The truth, it now appears, is not so simple.

6 Sep 2012

Study sheds new light on why most bone marrow transplant patients suffer acute GVHD

A team of scientists led by a bone marrow transplant researcher at Fred Hutchinson Cancer Research Center has shed new light on why most bone marrow transplant patients who receive tissue-matched cells from unrelated donors still suffer acute graft-versus-host disease (GVHD).

6 Sep 2012

Researchers discover two gene variants that raise risk of pediatric cancer neuroblastoma

Researchers have discovered two gene variants that raise the risk of the pediatric cancer neuroblastoma. Using automated technology to perform genome-wide association studies on DNA from thousands of subjects, the study broadens understanding of how gene changes may make a child susceptible to this early childhood cancer, as well as causing a tumor to progress.

5 Sep 2012

BioReliance introduces Reconstructed Skin Micronucleus Assay to detect DNA damage

Sigma-Aldrich Corporation today announced that its recent acquisition, BioReliance, the biopharma and early development services business under SAFC, will introduce a new assay to detect DNA damage from products with dermal routes of exposure. The Reconstructed Skin Micronucleus (RSMN) Assay represents the first commercial offering of a Genetic Toxicology assay using three-dimensional tissue models.

5 Sep 2012

Fusion-negative prostate tumours display more aberrant DNA methylations

In about half of all prostate tumours, there are two genetic areas that are fused with one another. When this is not the case, the exact way cancer cells originate in prostate tumours was not clear until now.

5 Sep 2012

Regular Fanconi anemia cells aren't sensitive to resveratrol

Fanconi anemia is a recessive genetic disorder affecting 1 in 350,000 babies, which leaves cells unable to repair damaged DNA. This lack of repair puts Fanconi anemia patients at high risk for developing a variety of cancers, especially leukemias and head and neck cancer.

5 Sep 2012

Converting blood cells to a stem cell state: an interview with Elias Zambidis, M.D., Ph.D.

The primitive stem cell state we created is called an “induced pluripotent stem cell” (iPSC). iPSC are a new, unique, and artificially-created type of stem cell that were first described in 2006 by a Japanese scientist named Shinya Yamanaka.

4 Sep 2012

Whole-genome sequencing can track origin and movement of TB pathogens

Reconstructing the spread of killer diseases such as tuberculosis (TB) from person to person using DNA sequencing quickly identifies the origin and movement of pathogens. This approach is directly informing public health strategies to control infectious disease outbreaks, says a scientist speaking at the Society for General Microbiology's Autumn Conference at the University of Warwick.

4 Sep 2012

Eat your greens for healthy sperm genes

Men who consume a high amount of certain nutrients may produce healthier sperm than men who do not, an effect that appears to be more pronounced in older men, report US researchers.

3 Sep 2012

Scientists restore sense of smell in mice through gene therapy

Scientists have restored the sense of smell in mice through gene therapy for the first time -- a hopeful sign for people who can't smell anything from birth or lose it due to disease.

3 Sep 2012

Longer looks: Too many pills for dad; Genetic secrets; A supermarket's dietitian

Job burnout can strike workers in nearly any field, but a new study finds that doctors are at special risk. Nearly 1 in 2 U.S. physicians report at least one symptom of burnout, with doctors at the front line of care particularly vulnerable, the study found -- a significantly higher rate than among the general working population.

1 Sep 2012

Seven antibiotic-resistance genes swapped between human and soil bacteria

Soil bacteria and bacteria that cause human diseases have recently swapped at least seven antibiotic-resistance genes, researchers at Washington University School of Medicine in St. Louis report Aug. 31 in Science.

1 Sep 2012