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Lizhong Liu1, Jun Wu1,2,3

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Stem cell-based embryo models (SCBEMs) offer a window into early human development. These lab-grown structures mimic the peri-implantation stage, aiding research into complex developmental processes.

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Area of Science:

  • Developmental Biology
  • Stem Cell Research
  • Embryology

Background:

  • Stem cell-based embryo models (SCBEMs) are 3D cultures of stem cells that mimic early embryonic development.
  • These models are crucial for studying early human development, a stage difficult to access through traditional methods.
  • SCBEMs have been developed in various species, including humans, mice, livestock, and nonhuman primates.

Purpose of the Study:

  • To review recent advancements in human SCBEMs.
  • To focus on models recapitulating the peri-implantation stage of human development.
  • To highlight the developmental aspects these models illuminate.

Main Methods:

  • Generation of SCBEMs using pluripotent stem cells and their derivatives.
  • Utilizing 3D culture techniques with mechanical and/or chemical cues.
  • Analysis of lineage differentiation, self-organization, and morphogenesis within SCBEMs.

Main Results:

  • Development of human SCBEMs capable of mimicking early embryonic stages.
  • Emphasis on models representing the peri-implantation period.
  • Demonstration of SCBEMs' ability to recapitulate key aspects of human development.

Conclusions:

  • Human SCBEMs are powerful tools for studying early human embryogenesis.
  • These models provide unprecedented access to the critical peri-implantation stage.
  • SCBEMs advance our understanding of human development and related disorders.