Research Advances in Gametogenesis and Embryogenesis Using Pluripotent Stem Cells

Area of Science:

• Reproductive Biology
• Developmental Biology
• Stem Cell Research

Background:

• Human gametogenesis and embryogenesis remain poorly understood due to ethical and material limitations.
• Animal models, particularly mice, show species-specific differences, limiting direct application to human physiology and pathology.
• Organoid technology provides a promising in vitro system to simulate these complex developmental processes.

Purpose of the Study:

• To review the development and applications of organoid systems for studying human gametogenesis and embryogenesis.
• To discuss the generation of primordial stem cell-like cells (PGCLCs), in vitro-induced gametes, and embryoids from pluripotent stem cells (PSCs).
• To analyze the potential and limitations of these organoid models in research and clinical settings.

Main Methods:

• Establishment of organoid systems, often starting from mouse models and adapting them for human studies.
• Utilizing pluripotent stem cells (PSCs) to generate primordial stem cell-like cells (PGCLCs).
• In vitro induction of gametes and embryoids using established organoid platforms.

Main Results:

• Successful establishment of organoid systems simulating key aspects of gametogenesis and embryogenesis.
• Demonstration of generating PGCLCs, in vitro gametes, and embryoids from PSCs.
• Organoid models facilitate the study of underlying signaling pathways, molecular mechanisms, genetics, and epigenetics.

Conclusions:

• Organoid models are crucial for advancing the understanding of human reproductive biology and developmental processes.
• These models hold significant potential for clinical applications, including disease diagnosis and drug screening.
• Further research is needed to address the limitations and fully harness the capabilities of human organoids in reproductive science.