p47phox siRNA-loaded PLGA nanoparticles suppress ROS/oxidative stress-induced chondrocyte damage in osteoarthritis

Hyo Jung Shin, Hyewon Park, Nara Shin, Hyeok Hee Kwon, Yuhua Yin, Jeong Ah Hwang, Song I. Kim, Sang Ryong Kim, Sooil Kim, Yongbum Joo, Youngmo Kim, Jinhyun Kim, Jaewon Beom, Dong Woon Kim

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Osteoarthritis (OA) is the most common joint disorder that has had an increasing prevalence due to the aging of the population. Recent studies have concluded that OA progression is related to oxidative stress and reactive oxygen species (ROS). ROS are produced at low levels in articular chondrocytes, mainly by the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, and ROS production and oxidative stress have been found to be elevated in patients with OA. The cartilage of OA-affected rat exhibits a significant induction of p47phox, a cytosolic subunit of the NADPH oxidase, similarly to human osteoarthritis cartilage. Therefore, this study tested whether siRNA p47phox that is introduced with poly (D,L-lactic-co-glycolic acid) (PLGA) nanoparticles (p47phox si_NPs) can alleviate chondrocyte cell death by reducing ROS production. Here, we confirm that p47phox si_NPs significantly attenuated oxidative stress and decreased cartilage damage in mono-iodoacetate (MIA)-induced OA. In conclusion, these data suggest that p47phox si_NPs may be of therapeutic value in the treatment of osteoarthritis.

Original languageEnglish
Article number443
Issue number2
StatePublished - 1 Feb 2020


  • Monosodium iodoacetate
  • Osteoarthritis
  • PLGA nanoparticles
  • Reactive oxygen species
  • p47phox

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