Neuroscience

Permanent changes in brain genes may not be so permanent after all

In normal development, all cells turn off genes they don't need, often by attaching a chemical methyl group to the DNA, a process called methylation. Historically, scientists believed methyl groups could only stick to a particular ...

Oncology & Cancer

New way to identify brain tumor aggressiveness

A comprehensive analysis of the molecular characteristics of gliomas—the most common malignant brain tumor—explains why some patients diagnosed with slow-growing (low-grade) tumors quickly succumb to the disease while ...

Medical research

Hopkins team discovers how DNA changes

Using human kidney cells and brain tissue from adult mice, Johns Hopkins scientists have uncovered the sequence of steps that makes normally stable DNA undergo the crucial chemical changes implicated in cancers, psychiatric ...

Genetics

Epigenetic factors linked to obesity-related disease

Obesity has been linked to "letter" changes at many different sites in the genome, yet these differences do not fully explain the variation in people's body mass index (BMI) or why some overweight people develop health complications ...

Diseases, Conditions, Syndromes

Huntington's Disease: Neural traffic could help understand the disease

Huntington's disease is a genetic neurodegenerative disorder caused by mutations in the protein huntingtin and characterized by involuntary dance-like movements, severe behavioral changes and cognitive impairment. That neuronal ...

Gerontology & Geriatrics

Bolstering the reliability of epigenetic clocks

Epigenetic clocks are powerful biomarkers based on DNA methylation that were developed to track aging in population studies, clinical trials, and personal health applications. Intended to measure biological age, they strongly ...

Oncology & Cancer

Scientists crack structure of enzyme complex linked to cancer

A research team led by a biochemist at the University of California, Riverside has solved the crystal structure for an enzyme that plays a key role in DNA methylation, the process by which methyl groups are added to the DNA ...

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