DNA Methylation Age Clock
Aging, Environment, & DiseaseDevelopmental Biology & Stem CellsDNA Methylation and Hydroxymethylation

Wanna Be Forever 21? It May Be Possible By Resetting Your DNA Methylation Age Clock

As an organism ages, cells and tissues differentiate and change. These changes can include accumulation of DNA mutations, alterations to telomeres, decay of cellular and tissue structures, and changes in gene expression. Both differentiation of tissues and age effects are at least partially caused by epigenetic modifications of the genome, …

Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Does Loss of DNA Methylation and Hydroxymethylation in the Brain Lead to Loss of Memory?

5-methylcytosine (5-mC) and 5-hydroxymethycytosine (5-hmC) are two major epigenetic modifications of DNA.  Dynamic changes in 5-mC and 5-hmC levels are tightly regulated and impact neural cell development, differentiation, and other biological functions. Deregulation of 5-mC and 5-hmC has also been implicated in various human diseases. However, whether 5-mC and 5-hmC …

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Aging, Environment, & DiseaseChromatin StructureDNA Methylation and HydroxymethylationHistone ModificationsRegulatory RNATools & Technology

Summary of Keystone Symposium: Epigenetic Marks and Cancer Drugs

In order for each of the cells of our bodies to stay healthy, gene expression must be controlled in a tightly regulated fashion. DNA is packaged around histone proteins, and a diverse set of enzymes are responsible for adding or removing specific post-translational modifications, or epigenetic marks, to histone tails. …

Aging, Environment, & DiseaseDNA Methylation and HydroxymethylationTools & Technology

A new web-based tool for high-throughput DNA methylation pathway analysis of multiple cancer types

Global cytosine hypomethylation and promoter hypermethylation are characteristic in cancer, but how DNA methylation targets biological pathways and gene sets is unclear. It is hypothesized that during tumorigenesis certain pathways and gene sets are commonly dysregulated via DNA methylation across cancer types. A logistic regression-based gene set enrichment method called …

Cognitive decline in the brain
Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Don’t forget about Dnmt’s

There is not a lot of knowledge about the enzymes that influence the molecular pathways underlying the normal aging process. A recent publication in Nature Neuroscience showed that the DNA methyltransferase Dnmt3a2 is critically involved in age-associated cognitive decline in mice. Oliveira et al.  found that up regulating Dnmt3a2 can …

Aging, Environment, & DiseaseDNA Methylation and Hydroxymethylation

Does Epigenetics Control Aging? New study finds DNA methylation patterns change with age

Aging is a natural part of life, but many of the molecular details that contribute to the aging process remain unclear and cannot be explained by classical genetics.  There are several age-related DNA methylation biomarkers, suggesting that epigenetics is involved in aging, but until recently there has not been a …