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3D Printed Tissue Models: Present and Future.

Jinah Jang1, Hee-Gyeong Yi1, Dong-Woo Cho1

  • 1Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Kyungbuk 37673, Korea.

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Summary
This summary is machine-generated.

Three-dimensional (3D) printing enables the creation of advanced tissue models for studying diseases and testing drugs. These 3D tissue models offer a more realistic environment than traditional methods, improving drug development and toxicology testing.

Keywords:
3D cell culture3D printingbioinksin vitro tissue modelorgan-on-a-chip

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Area of Science:

  • Biotechnology and Biomedical Engineering
  • Tissue Engineering and Regenerative Medicine
  • 3D Bioprinting and In Vitro Modeling

Background:

  • Current in vitro tissue models often fail to accurately mimic the complex microenvironments of natural tissues.
  • Existing methods using 2D substrates or simple hydrogel encapsulation limit the recapitulation of in vivo tissue behavior and arrangement.
  • There is a critical need for advanced models that can replicate physiological conditions for accurate disease and drug response studies.

Purpose of the Study:

  • To review recent advancements in 3D printed in vitro tissue models.
  • To highlight the capabilities of 3D printed models in supporting tissue differentiation, integration, and dynamic responses.
  • To discuss the potential of 3D printed tissue models as alternatives in drug development and toxicology testing.

Main Methods:

  • Review of current literature on 3D printing technologies for tissue engineering.
  • Analysis of methods for precise localization of cells, biomolecules, and materials in 3D constructs.
  • Evaluation of studies demonstrating the use of 3D printed models for disease and drug response investigations.

Main Results:

  • 3D printing enables the fabrication of complex, spatially controlled tissue models that closely mimic native tissue microenvironments.
  • These advanced models can support normal and diseased tissue development, integration, and spatiotemporal reactions to stimuli like drugs or metastasis.
  • 3D printed in vitro tissue models provide a more physiologically relevant platform for studying complex human physiology.

Conclusions:

  • 3D printed in vitro tissue models represent a significant leap forward in recapitulating human tissue complexity.
  • These models hold great promise for advancing our understanding of disease mechanisms and improving the accuracy of drug development and toxicology testing.
  • The development of sophisticated 3D printing techniques offers a potential alternative to animal testing in biomedical research.