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Supramolecular Heterodimer Peptides Assembly for Nanoparticles Functionalization.

Clélia Mathieu1,2,3, Shayamita Ghosh1,2,3, Julien Draussin1,2,3

  • 1Institut de Cancérologie Strasbourg Europe, Strasbourg, 67000, France.

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|March 6, 2024
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Summary
This summary is machine-generated.

A new peptide-based method enables precise nanoparticle (NP) functionalization for enhanced tumor targeting and immune cell interaction. This supramolecular assembly approach improves NP delivery and retention in HER2+ breast cancer models.

Keywords:
auto‐assemblybiofunctionalizationnanomedicinepeptide

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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Immunology

Background:

  • Nanoparticle (NP) surface functionalization with proteins like antibodies enhances tumor targeting but often lacks control over protein orientation and quantity.
  • Existing methods rely on complex chemistry, leading to batch-dependent outcomes and limited specificity.

Purpose of the Study:

  • To develop a novel, controllable method for NP biofunctionalization using supramolecular peptide assembly.
  • To create heterotetramers displaying VHHs for simultaneous targeting of tumor-associated antigens (TAAs) and immune cell antigens.

Main Methods:

  • Supramolecular assembly of two peptides to form a heterotetramer for displaying VHHs on NP surfaces.
  • Biofunctionalization of diverse NP types (liposomes, PLGA NPs, silica NPs) with VHHs targeting HER2, CD38, and NKG2D.
  • In vitro evaluation of VHH targeting specificity and in vivo studies in a HER2+ breast cancer mouse model.

Main Results:

  • Demonstrated versatility in functionalizing various nanoparticle platforms.
  • Successful targeting of specific TAAs (HER2, CD38) and an immune cell antigen (NKG2D).
  • In vivo studies showed significantly enhanced tumor uptake, retention, and penetration in a HER2+ breast cancer model compared to non-targeted NPs.

Conclusions:

  • The peptide-based supramolecular assembly offers a controllable and versatile platform for NP biofunctionalization.
  • This approach holds significant potential for improving cancer therapy by enhancing targeted delivery and immune cell engagement.
  • The method's efficacy in vivo highlights its promise for diverse nanomedicine applications.