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Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells
Published on: January 11, 2019
Parallel mechanisms of epigenetic reprogramming in the germline
Jamie A Hackett1, Jan J Zylicz, M Azim Surani
1Wellcome Trust/Cancer Research UK Gurdon Institute and Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 1QN, UK.
Trends in Genetics : TIG
|March 6, 2012
Summary
Primordial germ cells (PGCs) undergo crucial epigenetic reprogramming to achieve totipotency. This process involves DNA demethylation and parallel mechanisms ensuring robust and flexible development for future generations.
Area of Science:
- Developmental Biology
- Epigenetics
- Cell Biology
Background:
- Germ cells are unique cells capable of forming a new organism.
- Primordial germ cells (PGCs) must achieve a totipotent state.
- Epigenetic reprogramming is essential for PGC development.
Purpose of the Study:
- To explore the epigenetic mechanisms enabling PGC totipotency.
- To understand the role of DNA demethylation in germ cell development.
- To elucidate the robustness and flexibility of PGC epigenetic programming.
Main Methods:
- Analysis of genome-wide DNA demethylation pathways.
- Investigation of epigenetic reprogramming events in PGCs.
- Study of molecular mechanisms underlying cell-fate determination.
Main Results:
- PGCs undergo extensive epigenetic reprogramming, including DNA demethylation.
- Multiple overlapping pathways, such as conversion to 5-hydroxymethylcytosine, contribute to demethylation.
- The epigenetic program in PGCs utilizes parallel mechanisms for robustness and functional redundancy.
Conclusions:
- Epigenetic reprogramming is fundamental for establishing totipotency in PGCs.
- Understanding these mechanisms is key to advancing regenerative medicine.
- This knowledge can inform strategies for manipulating epigenetic memory and cell-fate decisions.
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