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Murine Model of Epicutaneously-Induced Immunomodulation

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Immunomodulation with Self-Crosslinked Polyelectrolyte Multilayer-Based Coatings.

Helena Knopf-Marques^1,2, Sonali Singh³, Su Su Htwe³

¹INSERM UMR 1121 , 11 rue Humann, 67085 Strasbourg, France.

Biomacromolecules

|May 17, 2016

Summary

This summary is machine-generated.

Researchers developed a self-cross-linked poly-l-lysine (PLL) and hyaluronic acid (HA) film that reduces inflammation. This innovative material promotes pro-healing macrophages, decreasing implant failure caused by immune responses.

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Fabrication of Anisotropic Polymeric Artificial Antigen Presenting Cells for CD8+ T Cell Activation

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Published on: October 12, 2018

Area of Science:

Biomaterials Science
Immunology
Regenerative Medicine

Background:

Implant failure is often caused by adverse immune reactions.
Developing materials that can modulate the immune response is crucial for improving implant success.

Purpose of the Study:

To design an optimal polyelectrolyte multilayer film using poly-l-lysine (PLL) and hyaluronic acid (HA) as an anti-inflammatory cytokine release system.
To enhance the film's mechanical properties and self-cross-linking capabilities.
To investigate the film's potential to reduce implant failure due to immune reactions.

Main Methods:

Chemically modified hyaluronic acid (HA) with aldehyde moieties for self-cross-linking.
Fabrication of polyelectrolyte multilayer films of PLL and HA-aldehyde.
Seeding primary human monocytes onto the films to assess macrophage differentiation and cytokine release.
Analysis of pro- and anti-inflammatory cytokine profiles (IL-4, IL1-RA, CCL18, IL-12, TNF-α, IL-1β).

Main Results:

Self-cross-linking of PLL/HA-aldehyde films improved mechanical properties.
Films induced monocyte differentiation into pro-healing macrophages, releasing anti-inflammatory cytokines (IL1-RA, CCL18) and reducing pro-inflammatory ones (IL-12, TNF-α, IL-1β).
Cross-linked PLL/HA-aldehyde films demonstrated inherent effectiveness in limiting inflammatory processes.

Conclusions:

Functionalized, self-cross-linked PLL/HA-aldehyde films are effective for immunomodulation.
These films represent an innovative approach to reduce implant-associated inflammation.
The developed material is a promising candidate for enhancing the success of various types of implants.