Epigenetic effects of nano-sized materials

Area of Science:

• Environmental Science
• Toxicology
• Molecular Biology

Background:

• Epigenetics involves DNA methylation, histone modifications, and microRNAs, influencing gene expression without changing DNA sequence.
• Environmental factors and nano-sized materials are increasingly recognized for their potential epigenetic effects.
• Epigenetic deregulation is linked to various human diseases, including cancer and neurodegeneration.

Purpose of the Study:

• To review existing studies on the epigenetic properties of nano-sized materials.
• To assess the impact of nanomaterials on epigenetic mechanisms like DNA methylation, histone modifications, and microRNA expression.
• To discuss methodologies for evaluating the epigenetic potential of nanomaterials.

Main Methods:

• Literature review of studies investigating nanomaterial effects on epigenetic modifications.
• Analysis of findings related to DNA methylation, histone acetylation/methylation, and microRNA expression changes induced by nanomaterials.
• Description of current methodologies for assessing epigenetic changes.

Main Results:

• Certain nano-sized compounds can impair genes involved in DNA methylation, leading to global and gene-specific changes.
• Nanomaterials can alter tumor suppressor genes, inflammatory genes, and DNA repair genes, potentially contributing to cancer.
• Some nanomaterials induce changes in histone tail modifications and microRNA expression.

Conclusions:

• Nano-sized materials possess the potential to induce significant epigenetic alterations.
• There is a lack of standardized protocols for evaluating the epigenetic effects of nanomaterials.
• Further research is crucial to understand the health risks associated with nanomaterial-induced epigenetic changes given their environmental prevalence.