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Epigenetics of Aging (Paperback, 2010 ed.)
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Epigenetics of Aging (Paperback, 2010 ed.)
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Recent studies have indicated that epigenetic processes may play a
major role in both cellular and organismal aging. These epigenetic
processes include not only DNA methylation and histone
modifications, but also extend to many other epigenetic mediators
such as the polycomb group proteins, chromosomal position effects,
and noncoding RNA. The topics of this book range from fundamental
changes in DNA methylation in aging to the most recent research on
intervention into epigenetic modifications to modulate the aging
process. The major topics of epigenetics and aging covered in this
book are: 1) DNA methylation and histone modifications in aging; 2)
Other epigenetic processes and aging; 3) Impact of epigenetics on
aging; 4) Epigenetics of age-related diseases; 5) Epigenetic
interventions and aging: and 6) Future directions in epigenetic
aging research. The most studied of epigenetic processes, DNA
methylation, has been associated with cellular aging and aging of
organisms for many years. It is now apparent that both global and
gene-specific alterations occur not only in DNA methylation during
aging, but also in several histone alterations. Many epigenetic
alterations can have an impact on aging processes such as stem cell
aging, control of telomerase, modifications of telomeres, and
epigenetic drift can impact the aging process as evident in the
recent studies of aging monozygotic twins. Numerous age-related
diseases are affected by epigenetic mechanisms. For example, recent
studies have shown that DNA methylation is altered in Alzheimer's
disease and autoimmunity. Other prevalent diseases that have been
associated with age-related epigenetic changes include cancer and
diabetes. Paternal age and epigenetic changes appear to have an
effect on schizophrenia and epigenetic silencing has been
associated with several of the progeroid syndromes of premature
aging. Moreover, the impact of dietary or drug intervention into
epigenetic processes as they affect normal aging or age-related
diseases is becoming increasingly feasible.
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