Transgenerational Impact of Environmental Change

Area of Science:

• Environmental Science
• Developmental Biology
• Genetics

Background:

• Species survival depends on adapting to environmental changes, which can occur too rapidly for genomic adaptation.
• Environmental factors like diet, temperature, stress, and pollutants can negatively affect parental gametes, embryo 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 changes in transgenerational inheritance of environmental impacts.

Main Methods:

• Review of animal models and human epidemiological data sets.
• Analysis of studies focusing on parental and grandparental environmental exposures.
• Examination of epigenetic modifications in gametes.

Main Results:

• Environmental factors can adversely affect gamete quality, preimplantation embryo development, and multi-generational offspring health.
• Epigenetic changes in parental or grandparental gametes are a potential mechanism for passing environmental influences across generations.

Conclusions:

• Parental and grandparental environmental factors significantly impact offspring phenotype and well-being.
• Epigenetic transgenerational inheritance is a key mechanism mediating these effects, highlighting the importance of environmental exposures for long-term health.