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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nanomedicine 2021 ; 34 (ä): 102388 Nephropedia Template TP
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Cerium oxide nanoparticle delivery of microRNA-146a for local treatment of acute lung injury #MMPMID33753282
Niemiec SM; Hilton SA; Wallbank A; Azeltine M; Louiselle AE; Elajaili H; Allawzi A; Xu J; Mattson C; Dewberry LC; Hu J; Singh S; Sakthivel TS; Sea S; Nozik-Grayck E; Smith B; Zgheib C; Liechty KW
Nanomedicine 2021[Jun]; 34 (ä): 102388 PMID33753282show ga
Acute respiratory distress syndrome (ARDS) is a devastating pulmonary disease with significant in-hospital mortality and is the leading cause of death in COVID-19 patients. Excessive leukocyte recruitment, unregulated inflammation, and resultant fibrosis contribute to poor ARDS outcomes. Nanoparticle technology with cerium oxide nanoparticles (CNP) offers a mechanism by which unstable therapeutics such as the anti-inflammatory microRNA-146a can be locally delivered to the injured lung without systemic uptake. In this study, we evaluated the potential of the radical scavenging CNP conjugated to microRNA-146a (termed CNP-miR146a) in preventing acute lung injury (ALI) following exposure to bleomycin. We have found that intratracheal delivery of CNP-miR146a increases pulmonary levels of miR146a without systemic increases, and prevents ALI by altering leukocyte recruitment, reducing inflammation and oxidative stress, and decreasing collagen deposition, ultimately improving pulmonary biomechanics.