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Related Experiment Video

Updated: May 29, 2025

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Engineered Shape-Tunable Copper-Coordinated Nanoparticles for Macrophage Reprogramming.

Han Gao1,2, Ruoyu Cheng1,2, Inês Cardoso1,3

  • 1Department of Biomaterials and Biomedical Technology, The Personalized Medicine Research Institute (PRECISION), University Medical Center Groningen, University of Groningen, Ant. Deusinglaan 1, 9713 AV Groningen, The Netherlands.

Nano Letters
|February 6, 2025
PubMed
Summary
This summary is machine-generated.

Copper nanoparticles (CuCNPs) show shape-dependent immune effects. Needle-shaped CuCNPs enhance immune cell populations, suggesting potential for immunotherapy applications.

Keywords:
Copper coordination nanocomplexesImmune responseMacrophage reprogrammingNanoparticlesShape-tunable

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Area of Science:

  • Nanomaterial science
  • Immunology
  • Biomedical engineering

Background:

  • The immune system's recognition of nanomaterials is crucial for homeostasis and immunotherapy.
  • Copper's coordination properties enable the formation of diverse metal-organic frameworks and complexes.

Purpose of the Study:

  • To develop shape-tunable copper-coordinated nanoparticles (CuCNPs).
  • To investigate the shape-dependent biocompatibility and immunomodulatory effects of CuCNPs.
  • To explore the potential of CuCNPs in immunotherapy.

Main Methods:

  • Synthesis of four distinct CuCNP morphologies: cuboctahedron, needle, octahedron, and plate.
  • Assessment of CuCNP biocompatibility across RAW264.7, THP-1, HEK 293, and HeLa cell lines.
  • Evaluation of immunomodulatory effects, including CD206+ subpopulation changes.

Main Results:

  • CuCNP biocompatibility varied significantly with shape across cell lines.
  • Needle-shaped CuCNPs exhibited notable cytotoxicity (IC50: 104.3 μg mL⁻¹ at 24 h).
  • Needle-shaped CuCNPs significantly increased CD206+ subpopulations (8.47% at 24h, 77% enhancement at 48h).

Conclusions:

  • CuCNP immunomodulatory effects are strongly shape-dependent.
  • Rational design of nanoscale metal complexes, like needle-shaped CuCNPs, holds promise for immunotherapy.
  • Understanding nanomaterial-immune interactions can reshape immunotherapy paradigms.