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Related Experiment Video

Updated: Jul 12, 2025

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Engineering Mesoscopic 3D Tumor Models with a Self-Organizing Vascularized Matrix.

Federica De Lorenzi1,2, Nadja Hansen3, Benjamin Theek1

  • 1Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, 52074, Aachen, Germany.

Advanced Materials (Deerfield Beach, Fla.)
|October 22, 2023
PubMed
Summary

A novel bioprinted artificial tumor model enables self-organization of vascular networks, enhancing tumor growth and mimicking disease characteristics for improved in vitro cancer research and drug testing.

Keywords:
3D bioprinting3D multicellular tumor spheroidbioengineeringhydrogelsmetastasis

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Area of Science:

  • Biomedical Engineering
  • Cancer Research
  • Tissue Engineering

Background:

  • Current in vitro models like spheroids and lab-on-a-chip devices struggle to replicate human disease complexity at the tissue scale.
  • Advanced models are needed to study tumor pathophysiology, cellular interactions, and drug responses more accurately.

Purpose of the Study:

  • To develop a bioprinted artificial tumor model that self-organizes into functional vascular structures.
  • To investigate the interplay between tumor spheroids and engineered vasculature.
  • To create a platform for studying cancer cell migration and drug testing.

Main Methods:

  • Embedding multicellular tumor spheroids in 3D hydrogel matrices with endothelial and stromal cells.
  • Utilizing bioprinting techniques to create perfusable and functional vascular networks.
  • Analyzing tumor growth, vascularization, cell migration, and preservation of patient-specific tumor characteristics.

Main Results:

  • The bioprinted model successfully formed self-organizing, perfusable vascular structures within mesoscopic tumor spheroids.
  • Engineered vascular networks promoted tumor spheroid growth and were infiltrated by cancer cells.
  • The model preserved key tumor characteristics like desmoplasia, angiogenesis, and metastatic propensity from patient-derived samples.
  • Cancer cells demonstrated spontaneous migration through the vascular network into the fluid flow.

Conclusions:

  • The modular bioprinted tumor model offers a more physiologically relevant in vitro system for studying tumor development and interactions.
  • This platform facilitates advanced drug testing and reduces reliance on in vivo experimentation.
  • The model's ability to mimic patient-specific tumor behaviors opens new avenues for personalized medicine research.