Abstract
The main aim of this research was to design a MCL-1 siRNA and dexamethasone (DEX)-loaded folate modified poly(lactide-co-glycolide) (PLGA)-based polymeric micelles with an eventual goal to improve the therapeutic outcome in the rheumatoid arthritis (RA). Polymeric micelles encapsulating the MCL-1 siRNA and DEX was successfully developed and observed to be stable. Physicochemical characteristics such as particle size and particle morphology were ideal for the systemic administration. Folate-conjugated DEX/siRNA-loaded polymeric micelles (DS-FPM) significantly lowered the MCL-1 mRNA expression compared to either DEX/siRNA-loaded polymeric micelles (DS-PM) or free siRNA in Raw264.7 cells and macrophage cells suggesting the importance of targeted nanocarriers. Most importantly, DS-FPM exhibited a greatest decrease in the hind paw volume with lowest clinical score compared to any other treated group indicating a superior anti-inflammatory activity. DS-FPM showed significantly lower levels of the TNF-α and IL-1β compared to AIA model and free groups. The folate receptor (FR)-targeting property of DS-FPM has been demonstrated to be a promising delivery platform for the effective delivery of combination therapeutics (siRNA and DEX) toward the treatment of rheumatoid arthritis.
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28 May 2024
A Correction to this paper has been published: https://doi.org/10.1007/s13346-024-01640-8
Abbreviations
- DEX:
-
Dexamethasone
- DS-FPM:
-
DEX/siRNA-loaded folate-conjugated polymeric micelles
- DS-PM:
-
DEX/siRNA-loaded polymeric micelles
- FR:
-
Folate receptors
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Li, Y., Wei, S., Sun, Y. et al. Nanomedicine-based combination of dexamethasone palmitate and MCL-1 siRNA for synergistic therapeutic efficacy against rheumatoid arthritis. Drug Deliv. and Transl. Res. 11, 2520–2529 (2021). https://doi.org/10.1007/s13346-021-01037-x
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DOI: https://doi.org/10.1007/s13346-021-01037-x