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3D printed controllable microporous scaffolds support embryonic development in vitro.

Jia Guo1,2,3, Yuanyuan Li1,2,3,4, Zili Gao1,2,3

  • 1The State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.

Journal of Cellular Physiology
|June 14, 2022
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Summary

3D printed scaffolds support embryo development in vitro, mimicking natural implantation conditions. Specific scaffold angles promote cell migration and development, highlighting the importance of 3D architecture in early embryonic research.

Keywords:
3D printinganisotropic microporous scaffoldsembryo implantationin vitro culture

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Area of Science:

  • Developmental Biology
  • Biomaterials Engineering
  • Reproductive Science

Background:

  • Embryo implantation is crucial for pregnancy but poorly understood at the molecular and cellular levels.
  • Traditional 2D cell cultures are insufficient for studying post-implantation embryonic development.
  • Three-dimensional (3D) culture systems offer a more physiologically relevant environment for embryo development.

Purpose of the Study:

  • To develop and evaluate 3D printed anisotropic microporous scaffolds for in vitro embryo culture.
  • To investigate the impact of scaffold architecture on embryonic development and cell behavior.
  • To explore the role of 3D environments in recapitulating key events of early embryonic development.

Main Methods:

  • Utilized 3D printing technology to fabricate anisotropic microporous scaffolds with varying layer advancing angles (e.g., 30°, 60°).
  • Cultured post-implantation embryos on these 3D printed scaffolds.
  • Assessed embryo development, embryo-scaffold attachment, and cell differentiation (T-positive and FOXA2-positive cells) over time.

Main Results:

  • 3D printed scaffolds successfully supported in vitro embryo development.
  • Scaffolds with 30° and 60° advancing angles promoted embryo development and moderate embryo-scaffold attachments.
  • Observed specific cell populations (T-positive and FOXA2-positive cells) migrating from posterior to anterior regions of the embryo by day 7.

Conclusions:

  • 3D printed scaffolds provide a versatile platform for supporting embryonic development in vitro.
  • The 3D architecture of scaffolds plays a critical role in regulating embryonic development and cell migration during implantation.
  • Additive manufacturing is a valuable tool for creating biomimetic environments for reproductive biology research.