Innovative Lipid Nanoparticles Co-Delivering Hydroxychloroquine and siRNA for Enhanced Rheumatoid Arthritis Therapy

<b>Background:</b> Rheumatoid arthritis (RA) is a debilitating autoimmune disorder characterized by chronic inflammation and joint damage. Despite advancements in treatment, complete remission remains elusive. <b>Methods:</b> In this study, we introduce a novel lipid nanopart...

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Main Authors: Yanru Feng, Xintong Pan, Ziqian Li, Yue Li, Ya’nan Sun, Shaokun Yang, Chaoxing He, Yunjie Dang, Lu Huang, Bai Xiang
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Pharmaceutics
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Online Access:https://www.mdpi.com/1999-4923/17/1/45
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Summary:<b>Background:</b> Rheumatoid arthritis (RA) is a debilitating autoimmune disorder characterized by chronic inflammation and joint damage. Despite advancements in treatment, complete remission remains elusive. <b>Methods:</b> In this study, we introduce a novel lipid nanoparticle formulation co-delivering hydroxychloroquine (HCQ) and siRNA targeting TNF-α (si<i>TNF-α</i>) using microfluidic technology, marking the first use of such a combination for RA therapy. <b>Results:</b> In LPS-stimulated RAW 264.7 cells, the nanoparticles effectively reduced inflammatory markers. When administered via an intra-articular injection in a rat model, they significantly decreased joint inflammation and demonstrated good biological safety. <b>Conclusions:</b> This pioneering approach highlights the potential of lipid nanoparticles as a dual-delivery platform for enhanced RA treatment through targeted intra-articular administration.
ISSN:1999-4923