Histone deacetylase inhibitor-polymer conjugate nanoparticles for acid-responsive drug delivery - Centre de recherche en cancérologie Nantes-Angers Unité Mixte de Recherche 892 Inserm - 6299 CNRS Access content directly
Journal Articles European Journal of Medicinal Chemistry Year : 2015

Histone deacetylase inhibitor-polymer conjugate nanoparticles for acid-responsive drug delivery

Abstract

We report the synthesis of acid responsive polymeric nanoparticles (NPs) consisting of a polymerhistone deacetylase inhibitor conjugate. An innovative aspect of this drug delivery particle lies in the NP conjugation of a histone deacetylase (HDAC) inhibitor, CI-994 (Tacedinaline), introduced with a clickable acid-responsive prodrug during monomer synthesis, prior to polymerization. Another novelty lies in the selected norbornene (NB)-polyethylene oxide (PEO) macromonomer allowing standardization of the polymerization process by Ring-Opening Metathesis Polymerization (ROMP) and functionalization through azide-allcyne click chemistry. Herein we demonstrate that the synthesized polymer gave 300 nm core-shell spherical nanoparticles with low dispersity (0.04), high water dispersability thanks to the PEO shell and well controlled HDAC inhibitor prodrug loading. Bioluminescence Resonance Energy Transfer (BRET) assay in living cells and viability experiments demonstrated efficient cellular internalization without additional chemistry, drug release inside cells with restoration of the HDAC inhibition and induction of apoptosis. Such NPs should minimize drug release in vivo during blood circulation and trigger intracellular delivery after endocytosis, holding promises for improved efficacy of this class of epigenetic inhibitors. This standardized synthesis paves the way for multifunctional nanoparticles synthesis.
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Dates and versions

hal-01368838 , version 1 (20-09-2016)

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Iza Denis, Fatima El Bahhaj, Floraine Collette, Régis Delatouche, Fabien Gueugnon, et al.. Histone deacetylase inhibitor-polymer conjugate nanoparticles for acid-responsive drug delivery. European Journal of Medicinal Chemistry, 2015, 95, pp.369-376. ⟨10.1016/j.ejmech.2015.03.037⟩. ⟨hal-01368838⟩
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