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Article Dans Une Revue Angewandte Chemie International Edition Année : 2020

Tuning Cellular Biological Functions Through the Controlled Release of NO from a Porous Ti‐MOF

João Pires
Guillaume Clet
Marco Daturi
Christian Serre
Moisés Pinto

Résumé

Materials for the controlled release of nitric oxide (NO) are of interest for therapeutic applications. However, to date, many suffer from toxicity and stability issues, as well as poor performance. Herein, we propose a new NO adsorption/release mechanism through the formation of nitrites on the skeleton of a titanium-based metal–organic framework (MOF) that we named MIP-177, featuring a suitable set of properties for such an application: (i) high NO storage capacity (3 μmol mg−1solid), (ii) excellent biocompatibility at therapeutic relevant concentrations (no cytotoxicity at 90 μg mL−1 for wound healing) due to its high stability in biological media (<9 % degradation in 72 hours) and (iii) slow NO release in biological media (≈2 hours for 90 % release). The prospective application of MIP-177 is demonstrated through NO-driven control of mitochondrial respiration in cells and stimulation of cell migration, paving the way for the design of new NO delivery systems for wound healing therapy.

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Chimie
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Dates et versions

hal-03080060 , version 1 (21-12-2020)

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Rosana Pinto, Sujing Wang, Sergio Tavares, João Pires, Fernando Antunes, et al.. Tuning Cellular Biological Functions Through the Controlled Release of NO from a Porous Ti‐MOF. Angewandte Chemie International Edition, 2020, 59 (13), pp.5135-5143. ⟨10.1002/anie.201913135⟩. ⟨hal-03080060⟩
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