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Vanadium carbide MXene (V4C3) shows biocompatibility and suppresses immune responses by downregulating antigen presentation genes. This discovery supports V4C3 as a potential treatment for inflammatory and autoimmune diseases.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Immunology

Background:

  • Vanadium-based drugs show anti-inflammatory potential but cause side effects.
  • Two-dimensional (2D) nanomaterials called MXenes are promising biomedical platforms.
  • Vanadium's immune properties may be transferable to MXene compounds.

Purpose of the Study:

  • Synthesize vanadium carbide MXene (V4C3) to evaluate its biocompatibility and immunomodulatory effects.
  • Investigate V4C3's impact on immune cell functions, including hemolysis, apoptosis, necrosis, activation, and cytokine production.
  • Explore V4C3's potential as a negative modulator of immune responses for treating inflammatory and autoimmune diseases.

Main Methods:

  • In vitro and ex vivo experiments on human primary immune cells.
  • Assessment of hemolysis, apoptosis, necrosis, activation, and cytokine production.
  • Single-cell mass cytometry on 17 human immune cell subpopulations.
  • Analysis of T cell-dendritic cell interactions and CD40-CD40 ligand modulation.
  • Exploration of molecular mechanisms, including antigen presentation-associated gene expression.

Main Results:

  • V4C3 demonstrates biocompatibility across 17 human immune cell subpopulations.
  • V4C3 inhibits T cell-dendritic cell interactions by modulating CD40-CD40 ligand.
  • V4C3 downregulates antigen presentation-associated genes in primary human immune cells.
  • No significant impact on hemolysis, apoptosis, or necrosis observed.

Conclusions:

  • V4C3 is biocompatible and possesses intrinsic immunomodulatory effects.
  • V4C3 acts as a negative modulator of the immune response.
  • V4C3 holds promise for applications in inflammatory and autoimmune diseases.