gene expression tagged posts

A chromosome pulled from the flowers of Arabidopsis thaliana (green and white) unspools to reveal DNA (blue) coiled around packaging-proteins called histones (purple). The direction of epigenetic changes by genetic features begins as the RIM transcription factor (pink) docks on a corresponding DNA sequence (pink). Once docked, the RIM transcription factor directs methylation machinery to tack methyl groups (orange) onto specific nearby cytosines (orange).
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Credit: Salk Institute

All the cells in an organism have the exact same genetic sequence. What differs across cell types is their epigenetics—meticulously placed chemical tags that influence which genes are expressed in each cell...

Amid much speculation and research about how our genetics affect the way we age, a University of California, Berkeley, study now shows that individual differences in our DNA matter less as we get older and become prone to diseases of aging, such as diabetes and cancer.

In a study of the relative effects of genetics, aging and the environment on how some 20,000 human genes are expressed, the researchers found that aging and environment are far more important than genetic variation in af...

A Mount Sinai research team has identified one of the mechanisms that establish the skin as a protective barrier, a breakthrough that is critical to understanding and treating common skin conditions including eczema and psoriasis, according to a study published Thursday, May 28, in the scientific journal Genes & Development.

One of the most important roles of the skin is to act as a barrier that prevents water loss and protects the skin from pathogens. Failure of this protective function contributes to dermatological diseases. The research team led by Sarah E...

Researchers from the Stowers Institute for Medical Research have discovered a new function of ribosomes in human cells that may show the protein-making particle’s role in destroying healthy mRNAs, the messages that decode DNA into protein.

“For a long time, many people have viewed ribosomes as a passive player in the cell – a molecular machine that’s just producing proteins,” says Stowers Assistant Investigator Ariel Bazzini, PhD. “Now there’s growing evidence that ribosomes regulate gene expression, including in human cells.”

These findings, which were rece...