Transgenerational Impact of Environmental Change

Area of Science:

• Developmental Biology
• Environmental Health
• Genetics

Background:

• Species survival depends on adaptation to environmental changes, which often occur too rapidly for genomic adaptation.
• Phenotypic plasticity in parents or offspring can provide an advantage in adapting to future environmental conditions.
• Environmental factors like diet, temperature, stress, and pollutants can negatively impact gamete quality, embryonic development, and offspring health across generations.

Purpose of the Study:

• To examine the transgenerational effects of maternal and paternal environmental factors on offspring development and well-being.
• To investigate the role of epigenetic modifications in transmitting environmental impacts across generations.
• To focus on the influence of parental and grandparental diet on epigenetic transgenerational inheritance and offspring phenotype.

Main Methods:

• Review of animal model studies and human epidemiological data sets.
• Analysis of environmental factors affecting parental gametes and preimplantation embryos.
• Investigation of epigenetic changes in gametes as a mechanism for transgenerational inheritance.

Main Results:

• Environmental factors can adversely affect parental gametes, embryonic development, and offspring health over multiple generations.
• Epigenetic modifications in parental or grandparental gametes are a potential mechanism for transgenerational inheritance of environmental impacts.
• Parental and grandparental diet significantly influences epigenetic transgenerational inheritance and offspring phenotype.

Conclusions:

• Environmental exposures can have lasting effects on offspring health and well-being, extending beyond immediate generations.
• Epigenetic mechanisms are crucial for mediating the transgenerational transmission of environmental influences.
• Interventions targeting parental and grandparental diet may be key in mitigating adverse transgenerational health outcomes.