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Tuning Cellular Biological Functions Through the Controlled Release of NO from a Porous Ti‐MOF
Author(s) -
Pinto Rosana V.,
Wang Sujing,
Tavares Sergio R.,
Pires João,
Antunes Fernando,
Vimont Alexandre,
Clet Guillaume,
Daturi Marco,
Maurin Guillaume,
Serre Christian,
Pinto Moisés L.
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201913135
Subject(s) - biocompatibility , chemistry , biocompatible material , controlled release , adsorption , nitric oxide , wound healing , cytotoxicity , drug delivery , degradation (telecommunications) , titanium , biophysics , chemical engineering , nanotechnology , materials science , biomedical engineering , biochemistry , surgery , organic chemistry , computer science , medicine , engineering , in vitro , biology , telecommunications
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 −1 solid ), (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.