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Programmatic features of aging originating in development: aging mechanisms beyond molecular damage?

João Pedro de Magalhães1

  • 1Integrative Genomics of Ageing Group, Institute of Integrative Biology, University of Liverpool, Liverpool, UK. jp@senescence.info

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|September 12, 2012
PubMed

Insights

Aging may be driven by genetic programs, not just molecular damage. These developmental processes can persist into adulthood, influencing aging through regulated mechanisms like microRNAs and epigenetics.

Area of Science:

  • Genetics
  • Developmental Biology
  • Aging Research

Background:

  • Aging is traditionally viewed as accumulating molecular damage.
  • The concept of aging as a programmed process has been largely dismissed.
  • Recent research challenges this view by exploring genetic influences on aging.

Purpose of the Study:

  • To investigate whether mammalian aging involves predetermined patterns encoded in the genome.
  • To explore the link between developmental processes and aging.
  • To determine if aging is primarily due to stochastic damage or regulated processes.

Main Methods:

  • Functional genomics to analyze genetic influences on aging.
  • Examination of microRNA and epigenetic mechanisms.
  • Comparative analysis of aging in different organisms, including worms and mammals.

Main Results:

  • Evidence suggests certain aspects of mammalian aging follow genomic patterns linked to development.
  • Genetic programs for growth and development may persist into adulthood, becoming detrimental.
  • Aging changes appear to be products of regulated processes, not solely stochastic damage accumulation.

Conclusions:

  • The genome contains specific instructions that drive aging in animals.
  • Aging may be influenced by the persistence of developmental genetic programs.
  • This suggests a paradigm shift in understanding aging from damage accumulation to regulated processes, potentially explained by antagonistic pleiotropy.

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