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Updated: May 30, 2025

Tissue Engineering of a Human 3D in vitro Tumor Test System
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A 3D Self-Assembly Platform Integrating Decellularized Matrix Recapitulates In Vivo Tumor Phenotypes and

Michael J Buckenmeyer1, Elizabeth A Brooks1, Madison S Taylor1

  • 1Cancer Biomaterials Engineering Laboratory, Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland.

Cancer Research
|January 31, 2025
PubMed
Summary
This summary is machine-generated.

We developed ECM-rich MatriSpheres, a novel 3D cancer model that mimics tumor extracellular matrix interactions. This platform enhances disease modeling and drug discovery by improving the correlation with in vivo tumor cells.

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Area of Science:

  • Biomedical Engineering
  • Cancer Biology
  • Tissue Engineering

Background:

  • Three-dimensional (3D) cell culture models are crucial for studying the tumor microenvironment.
  • Analyzing the role of extracellular matrix (ECM) in cancer remains challenging.
  • Existing models often lack the complex ECM interactions found in vivo.

Purpose of the Study:

  • To develop a hydrogel-free platform for creating ECM-rich 3D cancer models.
  • To investigate cancer cell-ECM interactions in a controlled environment.
  • To improve the fidelity of in vitro models for cancer research and drug discovery.

Main Methods:

  • Established a hydrogel-free self-assembly platform to create ECM-rich 3D "MatriSpheres".
  • Incorporated decellularized small intestine submucosa ECM into colorectal cancer MatriSpheres.
  • Analyzed MatriSphere composition, cell organization, gene expression, and cytokine profiles.
  • Benchmarked MatriSpheres against traditional spheroids using single-cell RNA sequencing.

Main Results:

  • MatriSpheres incorporated ECM that proteomically mimicked colorectal cancer tumor ECM.
  • Colorectal cancer cells organized solubilized ECM into stroma-like regions within 5 days.
  • MatriSpheres exhibited ECM-dependent transcriptional and cytokine profiles linked to malignancy and immunoregulation.
  • MatriSpheres showed enhanced correlation with in vivo tumor cells compared to ECM-poor spheroids.

Conclusions:

  • MatriSpheres offer a hydrogel-free 3D platform for decoupling ECM influences on tumor biology.
  • This model promotes cell-ECM communication, enhancing disease modeling fidelity.
  • The platform has broad applications for high-throughput drug discovery and screening.