Nanomedicine platform for targeting activated neutrophils and neutrophil-platelet complexes using an α1-antitrypsin-derived peptide motif

Michelle A Cruz, Dillon Bohinc, Elizabeth A Andraska, Jurgis Alvikas, Shruti Raghunathan, Nicole A Masters, Nadine D van Kleef, Kara L Bane, Kathryn Hart, Kathryn Medrow, Michael Sun, Haitao Liu, Shannon Haldeman, Ankush Banerjee, Emma M Lessieur, Kara Hageman, Agharnan Gandhi, Maria de la Fuente, Marvin T Nieman, Timothy S KernCoen Maas, Steven de Maat, Keith B Neeves, Matthew D Neal, Anirban Sen Gupta, Evi X Stavrou

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Targeted drug delivery to disease-associated activated neutrophils can provide novel therapeutic opportunities while avoiding systemic effects on immune functions. We created a nanomedicine platform that uniquely utilizes an α 1-antitrypsin-derived peptide to confer binding specificity to neutrophil elastase on activated neutrophils. Surface decoration with this peptide enabled specific anchorage of nanoparticles to activated neutrophils and platelet-neutrophil aggregates, in vitro and in vivo. Nanoparticle delivery of a model drug, hydroxychloroquine, demonstrated significant reduction of neutrophil activities in vitro and a therapeutic effect on murine venous thrombosis in vivo. This innovative approach of cell-specific and activation-state-specific targeting can be applied to several neutrophil-driven pathologies.

Original languageEnglish
Pages (from-to)1004-1014
Number of pages11
JournalNature nanotechnology
Volume17
Issue number9
DOIs
Publication statusPublished - Sept 2022

Keywords

  • Animals
  • Humans
  • Hydroxychloroquine/pharmacology
  • Leukocyte Elastase/metabolism
  • Mice
  • Nanomedicine
  • Neutrophils
  • alpha 1-Antitrypsin Deficiency

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