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Author Spotlight: Patient-Informed 3D Model for Studying Glioblastoma Invasion via Interstitial Fluid Flow
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Hydrogel-Based Tumor Tissue Microarchitecture Reshapes Dendritic Cell Metabolic Profile and Functions.

Brian Chesney Quartey1,2, Jiranuwat Sapudom1, Paul Sean Tipay3

  • 1Laboratory for Immuno Bioengineering Research and Applications, Division of Engineering, New York University Abu Dhabi, Abu Dhabi, 129188, UAE.

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Summary

Extracellular matrix alignment impacts dendritic cell (DC) function, impairing immature DC migration and T-cell activation. Mature DCs remain unaffected, suggesting stage-specific roles in immune modulation for cancer therapy.

Keywords:
cellular migrationdendritic cell metabolismextracellular matrix alignmentimmune modulationtumor microenvironment

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Area of Science:

  • Immunology
  • Biomaterials Science
  • Cell Biology

Background:

  • The extracellular matrix (ECM) is crucial for immune cell function and its remodeling is implicated in diseases like cancer.
  • Fibrillar alignment within the ECM is a key feature of pathological conditions, influencing immune responses.

Purpose of the Study:

  • To investigate the impact of extracellular matrix (ECM) alignment on dendritic cell (DC) behavior and function.
  • To understand how controlled ECM anisotropy affects DC immunomodulatory properties and T-cell interactions.

Main Methods:

  • Utilized 3D biomimetic collagen matrices with controlled fibril anisotropy to mimic ECM alignment.
  • Analyzed immature and mature DC responses, including surface marker expression, chemokine secretion, transcriptomics, and metabolomics.
  • Performed T-cell coculture experiments to assess the effect of ECM alignment on T-cell activation.

Main Results:

  • Immature DCs in aligned matrices showed enhanced CD86 and HLA-DR expression and increased chemokine secretion but reduced oxidative phosphorylation and ATP production, leading to impaired migration.
  • Mature DCs exhibited minimal sensitivity to ECM alignment, maintaining consistent functional profiles.
  • ECM alignment dampened T-cell activation and proliferation in coculture experiments.

Conclusions:

  • Extracellular matrix alignment differentially affects dendritic cell (DC) function based on their maturation state.
  • ECM alignment can impair DC migration and T-cell responses, highlighting its role in immunomodulation within pathological contexts.
  • These findings offer insights for developing therapies targeting cancer and inflammatory diseases by modulating the tumor microenvironment.