Air pollution associated epigenetic modifications: Transgenerational inheritance and underlying molecular mechanisms

Area of Science:

• Environmental Health
• Epigenetics
• Toxicology

Background:

• Air pollution is a major cause of death in Southeast Asia, linked to chronic diseases.
• Airborne particulate matter damages cellular mitochondria and the epigenome.
• Mitochondrial reactive oxygen species can induce irreversible epigenomic changes.

Purpose of the Study:

• To explore the link between air pollution and epigenetic modifications.
• To investigate the potential for transgenerational epigenetic inheritance due to air pollution exposure.
• To highlight the need for further research into air pollution's long-term health effects.

Main Methods:

• Review of existing literature on air pollution, epigenetics, and cellular mechanisms.
• Analysis of how air pollutants affect mitochondrial function and DNA methylation.
• Discussion of potential mechanisms for transgenerational epigenetic inheritance.

Main Results:

• Air pollution exposure alters DNA methylation and histone modifications.
• Mitochondrial dysfunction and reactive oxygen species play a role in epigenomic damage.
• Epigenetic changes may be heritable across generations via germ cells.

Conclusions:

• Air pollution may contribute to transgenerational epigenetic inheritance through various mechanisms.
• Mitochondrial DNA, imprinting, histone modifications, and non-coding RNAs are implicated.
• Larger prospective epigenome-wide metabolomic studies are essential to confirm these findings and assess health impacts.