What impact does oocyte vitrification have on epigenetics and gene expression?

Area of Science:

• Reproductive biology
• Epigenetics
• Developmental biology

Background:

• Children conceived via assisted reproductive technologies (ART) face increased risks.
• The source of these risks—ART procedures or underlying infertility—remains unclear.
• ART procedures coincide with critical epigenetic reprogramming periods in gametes and embryos.

Purpose of the Study:

• To review the impact of oocyte vitrification on epigenetic regulation.
• To examine consequences on gene expression in animals and humans.
• To highlight knowledge gaps in ART's epigenetic effects.

Main Methods:

• Literature review of epigenetic reprogramming.
• Analysis of studies on oocyte vitrification and epigenetics.
• Synthesis of data on gene expression changes.

Main Results:

• Oocyte vitrification may induce modifications to epigenetic marks.
• Evidence suggests altered epigenetic and transcriptomic profiles due to vitrification stress.
• Impacts on gene expression have been observed in both animal models and human studies.

Conclusions:

• Oocyte vitrification can influence epigenetic regulation and gene expression.
• Further research is crucial to fully understand the long-term consequences of ART on epigenetics.
• Improving knowledge in this field is essential for ART safety and efficacy.