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).

Animal eggs no source for embryonic stem cells

Stem cell researchers in the U.S. say that eggs from cows, rabbits and other animals are not a good source for creating embryonic stem cells.

3 Feb 2009

Scientists unlock secrets of gene regulatory networks

A quartet of studies by researchers at the California Institute of Technology (Caltech) highlight a special feature on gene regulatory networks recently published in the Proceedings of the National Academy of Sciences ( PNAS ).

3 Feb 2009

Researcher proposes statistical method to enhance secondary security screenings

A researcher at The University of Texas at Austin has found that secondary security screening at airports is mathematically flawed, and has identified a way to select people for screenings more efficiently and fairly.

2 Feb 2009

New vaccine developed for preventing human adenovirus type-3d virus

Common colds typically cause a week of sneezing, aches and pains and then fade away leaving only a sore nose and a few used sick days behind.

2 Feb 2009

Genetic change prevents cell death in mouse model of Parkinson's disease

By shifting a normal protective mechanism into overdrive, a University of Wisconsin-Madison scientist has completely shielded mice from a toxic chemical that would otherwise cause Parkinson's disease.

2 Feb 2009

Discovery fleshes out metabolism of key environmental and energy bacteria

An international collaboration of researchers has discovered a new enzyme in a species of bacteria with potential environmental cleanup and energy roles.

2 Feb 2009

Shortened gene region linked to breast cancer

Reza Zarnegar and colleagues, at the University of Pittsburgh, Pittsburgh, have determined that genetic variation in a piece of DNA that regulates activity of the HGF gene might be a useful marker to identify individuals with an increased risk of developing breast cancer.

2 Feb 2009

Discovery of new class of non-protein coding genes in mammals with key functions

A research team at the Broad Institute of Harvard and MIT and Beth Israel Deaconess Medical Center has uncovered a vast new class of previously unrecognized mammalian genes that do not encode proteins, but instead function as long RNA molecules.

2 Feb 2009

Discovery could lead to a new animal model for hepatitis C

During its career, the potentially fatal hepatitis C virus has banked its success on a rather unusual strategy: its limitations.

2 Feb 2009

You are what your parents ate!

According to Australian scientists we are what our parents ate - scientists at the Baker IDI Heart and Diabetes Institute say that very specific molecular events occur after the consumption of food high in glucose, causing chemical changes to our genetic controls.

2 Feb 2009

Sociability traced to region of brain called amygdala

People with a genetic condition called Williams syndrome are famously gregarious. Scientists, looking carefully at brain function in individuals with Williams syndrome, think they may know why this is so.

29 Jan 2009

New insights into a avian pathogenic E. coli and its risks to human health

Biodesign Institute at Arizona State University associate research scientist Melha Mellata, a member of professor Roy Curtiss' team, is leading a USDA funded project to develop a vaccine against a leading poultry disease called avian pathogenic E. coli (APEC).

29 Jan 2009

HPV18 DNA levels are not prognostic for precancerous cervical lesions

Perhaps surprisingly, the number of copies of the carcinogenic human papillomavirus type 18 (HPV18) relative to cellular DNA is not associated with the likelihood of progression to advanced precancerous lesions of the cervix, according to a study in the January 27 online issue of the Journal of the National Cancer Institute.

29 Jan 2009

Component of DNA stimulates and suppresses the immune response

A component of DNA that can both stimulate and suppress the immune system, depending on the dosage, may hold hope for treating cancer and infection, Medical College of Georgia researchers say.

29 Jan 2009

Medarex announces allowance of IND application for antibody-drug conjugate, MDX-1203

Medarex, Inc. has announced the allowance of an investigational new drug (IND) application filed with the U.S. Food & Drug Administration (FDA) for MDX-1203, the Company's first Antibody-Drug Conjugate (ADC) candidate generated from its proprietary technology.

29 Jan 2009

Sleeping with dogs!

According to new research from the U.S. dog owners are more likely to share germs with pets by not washing their hands than by sleeping with the dog.

28 Jan 2009

New understanding of genetic basis of psoriasis

Two international teams of researchers have made significant gains in understanding the genetic basis of psoriasis, a chronic skin condition that can be debilitating in some patients.

27 Jan 2009

New study looks at childhood leukaemia, caffeine intake and pregnancy

A study led by Dr Marcus Cooke at the University of Leicester and funded by World Cancer Research Fund (WCRF) UK is looking at whether consuming caffeine during pregnancy might affect the unborn baby's risk of developing leukaemia in childhood.

27 Jan 2009

Scientists discover new class of small RNAs

Researchers at Cold Spring Harbor Laboratory (CSHL) announced today the discovery of a new class of small RNAs. At the same time, they reported that their discovery suggests the presence of a strikingly novel biochemical pathway for RNA processing in which these and possibly other small RNAs are produced.

27 Jan 2009

Although our genetics differ significantly, we all look alike...

The genetic variation within a species can be significant, but very little of that variation results in clear differences in morphology or other phenotypes.

27 Jan 2009