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Ca2+-Mediated Surface Polydopamine Engineering to Program Dendritic Cell Maturation.

Yiqiong Liu1, Yi Han1, Haiqing Dong1

  • 1Shanghai Tenth People's Hospital, The Institute for Biomedical Engineering & Nano Science , Tongji University School of Medicine , Shanghai 200092 , China.

ACS Applied Materials & Interfaces
|January 1, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel cell surface engineering technique using polydopamine nanostructures. This method allows for controlled manipulation of dendritic cell (DC) maturation via chemical suppression and laser-induced activation.

Keywords:
Ca2+ bridgeROS scavengeron-demand DC maturationphotoheatsurface polydopamine engineering

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Area of Science:

  • Biomaterials Science
  • Cellular Engineering
  • Immunology

Background:

  • Cell surface engineering offers physicochemical control over cellular functions.
  • Existing methods require complex biological or chemical approaches.
  • Dendritic cells (DCs) play a crucial role in immune responses and their maturation is a key target.

Purpose of the Study:

  • To develop a rapid, cytocompatible method for engineering dendritic cell surfaces.
  • To demonstrate bidirectional control over DC maturation using surface-modified DCs.
  • To explore the potential of polydopamine nanostructures for cell surface modification.

Main Methods:

  • In situ growth of polydopamine nanostructures on dendritic cell surfaces within 10 minutes, mediated by Ca2+.
  • Utilizing Ca2+ as a physical bridge to ensure cell viability during surface engineering.
  • Investigating the effect of polydopamine surface engineering on DC maturation, including suppression and laser-induced activation.

Main Results:

  • Polydopamine surface engineering effectively controlled dendritic cell (DC) maturation.
  • The engineered DCs showed suppressed activation due to polydopamine's reactive oxygen species scavenging.
  • Remote activation of DC maturation was achieved using 808 nm laser irradiation via polydopamine's photo-thermal effect.

Conclusions:

  • A straightforward and efficient cell surface engineering approach was established using polydopamine nanostructures.
  • This method provides bidirectional control over dendritic cell maturation, enabling suppression and activation.
  • The technique holds promise for applications in immunology and regenerative medicine requiring precise control of immune cells.