Development of a PHBV nanoparticle as a peptide vehicle for NOD1 activation

Mauricio Cabaña-Brunod, Pablo A. Herrera, Valeria Márquez-Miranda, Felipe M. Llancalahuen, Yorley Duarte, Danilo González-Nilo, Juan A. Fuentes, Cristián Vilos, Luis Velásquez, Carolina Otero

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


NOD1 is an intracellular receptor that, when activated, induces gene expression of pro-inflammatory factors promoting macrophages and neutrophils recruitment at the infection site. However, iE-DAP, the dipeptide agonist that promotes this receptor's activation, cannot permeate cell membranes. To develop a nanocarrier capable of achieving a high and prolonged activation over time, iE-DAP was encapsulated in nanoparticles (NPs) made of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). The physicochemical properties, colloidal stability, encapsulation efficiency, and cellular uptake of iE-DAP-loaded PHVB NPs were analyzed. Results evidenced that physicochemical properties of iE-DAP-loaded NPs remained stable over time, and NPs were efficiently internalized into cells, a process that depends on time and concentration. Moreover, our results showed that NPs elicited a controlled cargo release in vitro, and the encapsulated agonist response was higher than its free form, suggesting the possibility of activating intracellular receptors triggering an immune response through the release of NOD1 agonist.

Original languageEnglish
Pages (from-to)1020-1030
Number of pages11
JournalDrug Delivery
Issue number1
Publication statusPublished - 2021


  • innate immunity
  • macrophage
  • Nanoparticles
  • Nod1 agonist
  • PHBV

ASJC Scopus subject areas

  • Pharmaceutical Science


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