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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

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

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

Genome sequencing may help identify new targets to treat Pneumocystis pneumonia

Scientists have sequenced the genome of the fungus Pneumocystis jirovecii, an advancement that could help identify new targets for drugs to treat and prevent Pneumocystis pneumonia, a common and often deadly infection in immunocompromised patients.

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

Genetic innovations for pneumonia diagnosis in children

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

24 Dec 2012

Parkinson’s: an interview with Steve Ford, CEO of Parkinson’s UK

Parkinson’s disease is a neurological condition that is caused when brain cells, that produce the chemical messenger dopamine, start to die.

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

Protein complex plays critical role in development of Alzheimer's disease

The Bonn site of the German Center for Neurodegenerative Diseases (DZNE) and the University of Bonn are leading contributors.

21 Dec 2012

UAB research succeeds in testing a vaccine against leishmaniasis

A research coordinated by the UAB has succeeded in testing a vaccine against leishmaniasis. The vaccine was tested with the best animal model existing, the golden hamster, and can be produced at low costs by using insect larvae.

21 Dec 2012

New technique may prevent inheritance of mitochondrial diseases in children

A joint team of scientists from The New York Stem Cell Foundation (NYSCF) Laboratory and Columbia University Medical Center (CUMC) has developed a technique that may prevent the inheritance of mitochondrial diseases in children.

21 Dec 2012

Researchers reveal genetic basis for fundamental differences between humans and other vertebrates

University of Toronto Faculty of Medicine researchers have uncovered a genetic basis for fundamental differences between humans and other vertebrates that could also help explain why humans are susceptible to diseases not found in other species.

21 Dec 2012

Oscillation of gene activity may underlie how embryos grow in proportion

From a single-cell egg to a fully functional body: as embryos develop and grow, they must form organs that are in proportion to the overall size of the embryo. The exact mechanism underlying this fundamental characteristic, called scaling, is still unclear. However, a team of researchers from EMBL Heidelberg is now one step closer to understanding it.

21 Dec 2012

Study examines role of race and ethnicity in stem cell donation

New research examining the role of race and ethnicity in an individual's decision to become a donor for hematopoietic cell transplantation (HCT) identifies several factors associated with varied participation rates in national donor registries across racial/ethnic groups. Results of this first-of-its-kind study are published online today in Blood, the Journal of the American Society of Hematology (ASH).

21 Dec 2012

Melanoma patients may benefit from microRNA-26a replacement therapy

A University of Colorado Cancer Center study in this month's edition of the Journal of Investigative Dermatology describes a new target and potential treatment for melanoma, the most dangerous form of skin cancer. MicroRNA can decide which genes in a cell's DNA are expressed and which stay silent. Melanoma tends to lack microRNA-26a, which makes the gene SODD go silent.

21 Dec 2012

New work on Akt's role in cancer stem cell biology

The protein kinase Akt is a key regulator of cell growth, proliferation, metabolism, survival, and death. New work on Akt's role in cancer stem cell biology from the lab of senior author Honglin Zhou, MD, PhD and Weihua Li, co-first author, both from the Center for Resuscitation Sciences, Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, and Xiaowei Xu, Department of Pathology and Laboratory Medicine, appears in Molecular Cell.

21 Dec 2012

Ebselen effectively inhibits thioredoxin reductase system in H. pylori, M. tuberculosis

A drug currently being used to treat ischemic strokes may prove to be a significant advance in the treatment of tuberculosis and ulcers. In a new research report appearing online in The FASEB Journal, a compound called ebselen effectively inhibits the thioredoxin reductase system in a wide variety of bacteria, including Helicobacter pylori which causes gastric ulcers and Mycobacterium tuberculosis which causes tuberculosis.

21 Dec 2012

Two recent experimental treatments improve visual function in mouse models of retinitis pigmentosa

Two recent experimental treatments - one involving skin-derived induced pluripotent stem (iPS) cell grafts, the other gene therapy - have been shown to produce long-term improvement in visual function in mouse models of retinitis pigmentosa (RP), according to the Columbia University Medical Center (CUMC) scientists who led the studies. At present, there is no cure for RP, the most common form of inherited blindness.

20 Dec 2012

Study finds new signaling pathway involved in development of chronic inflammation of brain cells

The number of Alzheimer's patients will continue to dramatically increase in the next several decades. Various teams of researchers worldwide are feverishly investigating precisely how the illness develops. A

20 Dec 2012