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AuthorMohamed, Nura A.
AuthorAbou-Saleh, Haissam
AuthorKameno, Yu
AuthorMarei, Isra
Authorde Nucci, Gilberto
AuthorAhmetaj-Shala, Blerina
AuthorShala, Fisnik
AuthorKirkby, Nicholas S.
AuthorJennings, Lewis
AuthorAl-Ansari, Dana E.
AuthorDavies, Robert P.
AuthorLickiss, Paul D.
AuthorMitchell, Jane A.
Available date2023-11-01T07:06:00Z
Publication Date2021-12-01
Publication NameScientific Reports
Identifierhttp://dx.doi.org/10.1038/s41598-021-83423-6
CitationMohamed, N.A., Abou-Saleh, H., Kameno, Y. et al. Studies on metal–organic framework (MOF) nanomedicine preparations of sildenafil for the future treatment of pulmonary arterial hypertension. Sci Rep 11, 4336 (2021). https://doi.org/10.1038/s41598-021-83423-6
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85101424130&origin=inward
URIhttp://hdl.handle.net/10576/48947
AbstractPulmonary arterial hypertension (PAH) is an incurable disease, although symptoms are treated with a range of dilator drugs. Despite their clinical benefits, these drugs are limited by systemic side-effects. It is, therefore, increasingly recognised that using controlled drug-release nanoformulation, with future modifications for targeted drug delivery, may overcome these limitations. This study presents the first evaluation of a promising nanoformulation (highly porous iron-based metal–organic framework (MOF); nanoMIL-89) as a carrier for the PAH-drug sildenafil, which we have previously shown to be relatively non-toxic in vitro and well-tolerated in vivo. In this study, nanoMIL-89 was prepared and charged with a payload of sildenafil (generating Sil@nanoMIL-89). Sildenafil release was measured by Enzyme-Linked Immunosorbent Assay (ELISA), and its effect on cell viability and dilator function in mouse aorta were assessed. Results showed that Sil@nanoMIL-89 released sildenafil over 6 h, followed by a more sustained release over 72 h. Sil@nanoMIL-89 showed no significant toxicity in human blood outgrowth endothelial cells for concentrations up to100µg/ml; however, it reduced the viability of the human pulmonary artery smooth muscle cells (HPASMCs) at concentrations > 3 µg/ml without inducing cellular cytotoxicity. Finally, Sil@nanoMIL-89 induced vasodilation of mouse aorta after a lag phase of 2–4 h. To our knowledge, this study represents the first demonstration of a novel nanoformulation displaying delayed drug release corresponding to vasodilator activity. Further pharmacological assessment of our nanoformulation, including in PAH models, is required and constitutes the subject of ongoing investigations.
SponsorOpen Access funding enabled and organized by Projekt DEAL.
Languageen
Publishernature
SubjectDrug delivery
Nanomedicine
Nanoscience and technology
TitleStudies on metal–organic framework (MOF) nanomedicine preparations of sildenafil for the future treatment of pulmonary arterial hypertension
TypeArticle
Issue Number1
Volume Number11
ESSN2045-2322
dc.accessType Open Access


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