Genetic News and Research

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Researchers study response of living cells to artificial protein

One approach to understanding components in living organisms is to attempt to create them artificially, using principles of chemistry, engineering and genetics. A suite of powerful techniques-collectively referred to as synthetic biology-have been used to produce self-replicating molecules, artificial pathways in living systems and organisms bearing synthetic genomes.

28 Dec 2012

Model-independent way to study ion channel gating

Two studies in The Journal of General Physiology (JGP) help pave the way for a "shortcut" model-free approach to studying activation of "polymodal" ion channels-channels that open in response to multiple stimuli. Transmembrane ion channels respond to various physiological stimuli to regulate numerous cellular functions. Different classes of channels respond to different types of stimuli; some channels, for instance, respond to changes in membrane potential whereas others are activated by ligand binding.

28 Dec 2012

New light on how epigenetic signals may function together to determine fate of stem cell

Long-standing research efforts have been focused on understanding how stem cells, cells capable of transforming into any type of cell in the body, are capable of being programmed down a defined path to contribute to the development of a specific organ like a heart, lung, or kidney. Research from the University of North Carolina at Chapel Hill School of Medicine has shed new light on how epigenetic signals may function together to determine the ultimate fate of a stem cell.

28 Dec 2012

Researchers sequence entire gene to identify mutations that cause hyperinsulinism

Congenital hyperinsulinism is a genetic condition where a baby's pancreas secretes too much insulin. It affects approximately one in 50,000 live births and in severe cases requires the surgical removal of all or part of the pancreas.

28 Dec 2012

Novel approach to sort out good or bad mutations associated with lymphoma

As anyone familiar with the X-Men knows, mutants can be either very good or very bad - or somewhere in between. The same appears true within cancer cells, which may harbor hundreds of mutations that set them apart from other cells in the body; the scientific challenge has been to figure out which mutations are culprits and which are innocent bystanders.

28 Dec 2012

Immune-promoting drugs may control recurrent disease

Nearly half of the 700,000 cancer patients who undergo surgical removal of a primary tumor each year suffer a recurrence of their disease at some point, and many of those patients will eventually die from their disease.

28 Dec 2012

New cost-effective, less invasive MRI method for diagnosis of dementia

A new way to use MRI scans may help determine whether dementia is Alzheimer's disease or another type of dementia, according to new research published in the December 26, 2012, online issue of Neurology®, the medical journal of the American Academy of Neurology.

27 Dec 2012

Researchers reveal critical role of BRCA1 gene in maintenance of hair follicle stem cells

Our DNA, which stores our genetic information, is constantly submitted to damage. If not properly repaired, DNA damage can lead to cell death, which may in turn lead to tissue exhaustion and ageing, or induce mutations resulting in uncontrolled cell proliferation and cancer. Brca1 is a key gene that mediates DNA repair. Mutations in Brca1 lead to familial and sporadic breast and ovarian cancer in humans.

27 Dec 2012

Genetic differences in enzyme CYP2D6 play a key role in effectiveness of tamoxifen for breast cancer

For nearly a decade, breast cancer researchers studying the hormone therapy tamoxifen have been divided as to whether genetic differences in a liver enzyme affect the drug's effectiveness and the likelihood breast cancer will recur.

27 Dec 2012

Whole Genome Mapping and NGS deliver high-quality reference genome of domestic goat

OpGen, Inc. today announced its ARGUS Whole Genome Mapping System technology was used in combination with next-generation sequencing (NGS) to produce the first, high-quality reference genome of the domestic goat.

26 Dec 2012

Study reveals body's food clock on a molecular level

If the sinful excess of holiday eating sends your system into butter-slathered, brandy-soaked overload, you are not alone: People who are jet-lagged, people who work graveyard shifts and plain-old late-night snackers know just how you feel.

25 Dec 2012

Study suggests genetic component in pain response among children

At least two common gene variants are linked to "clinically meaningful" differences in pain scores in children after major surgery, reports a study in the January issue of Anesthesia & Analgesia, official journal of the International Anesthesia Research Society (IARS).

25 Dec 2012

BRCA testing impact on ovarian cancer prevention revealed

Research shows that women without a confirmed BRCA mutation are choosing to undergo screening or surgery to prevent ovarian cancer, despite little evidence to support their use in this population.

24 Dec 2012

Cause of recurrent infections in MECP2 duplication syndrome identified

US study results show that the genetic abnormality underlying the pediatric condition methyl-CpG binding protein 2 duplication syndrome also causes immune dysfunction.

24 Dec 2012

Genetic innovations for pneumonia diagnosis in children

Polymerase chain reaction could help diagnose Mycoplasmia pneumonia infection in children, researchers say.

24 Dec 2012

Autism genome not shy about tinkering with important genes

An international team, led by researchers from the University of California, San Diego School of Medicine, has discovered that "random" mutations in the genome are not quite so random after all. Their study, to be published in the journal Cell on December 21, shows that the DNA sequence in some regions of the human genome is quite volatile and can mutate ten times more frequently than the rest of the genome. Genes that are linked to autism and a variety of other disorders have a particularly strong tendency to mutate.

21 Dec 2012

Gene therapy shows promise for severe coronary artery disease

Diagnosed with severe coronary artery disease, a group of patients too ill for or not responding to other treatment options decided to take part in a clinical trial testing angiogenic gene therapy to help rebuild their damaged blood vessels.

21 Dec 2012

Cholera strain from Guinea identified as more toxic, contagious

"Scientists say the cholera outbreak that struck more than 7,000 people in Guinea this year was caused by a more toxic and more contagious generation of the bacteria," and they "suspect the same strain killed nearly 300 people and struck more than 22,000 others in neighboring Sierra Leone," VOA News reports.

21 Dec 2012

Molecule imitating a virus may trigger inappropriate immune response

Why would our immune system turn against our own cells? This is the question that the combined Inserm/CNRS/ Pierre and Marie Curie University/Association Institut de Myologie have strived to answer in their "Therapies for diseases of striated muscle", concentrating in particular on the auto-immune disease known as myasthenia gravis.

21 Dec 2012

Novel virus-based gene therapy holds promise for Canavan disease

Research led by Paola Leone, PhD, of the University of Medicine and Dentistry of New Jersey-School of Osteopathic Medicine (UMDNJ-SOM), demonstrates the long term safety and benefit of a virus-based gene therapy that has been applied for the first time in a clinical setting.

21 Dec 2012