Dengying Wu1, ShanShan Jin2, Zeng Lin1, Rong Chen1, Tianlong Pan1, Xiaodiao Kang1, Huasong Huang2, Cong Lin2, Jun Pan3. 1. Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, 109, Xueyuanxi road, 325027 Wenzhou, China. 2. The Second Clinical Medical School, Wenzhou Medical University, 82, Xueyuanxi road, 325027 Wenzhou, China. 3. Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, 109, Xueyuanxi road, 325027 Wenzhou, China. Electronic address: panjun@wmu.edu.cn.
Abstract
BACKGROUND: Osteoarthritis (OA) is a common degenerative joint disease for which currently no anti-inflammatory therapy is available. Sauchinone (SAU), a key bioactive compound derived from Saururus chinensis, which has shown remarkable anti-inflammatory effects. METHODS: To evaluate the effect of SAU on OA progression, mouse chondrocytes were pretreated with SAU and subsequently stimulated with interleukin (IL)-1β. We found that SAU reduced the production of pro-inflammatory cytokines, such as nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor alpha (TNF-α), and IL-6. SAU also inhibited the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) at both the gene and protein level. Moreover, SAU promoted the expression of aggrecan, while inhibiting the expression of catabolic factors, such as matrix metalloproteinases (MMPs) and thrombospondin motifs 5 (ADAMTS-5) in mouse chondrocytes. Col X, vascular endothelial growth factor-A (VEGF)-A, and Runx2, major markers of hypertrophic chondrocytes, were markedly elevated following IL-1β stimulation, and were reduced by SAU treatment while having the opposite effect on Col II. Mechanistically, we found that SAU inhibited nuclear factor kappa B (NF-κB) and activated the Nrf2/HO-1 pathway. The beneficial effects of SAU were also observed in vivo using a mouse OA model. CONCLUSIONS: Our findings indicate that SAU may be a potential novel therapeutic for the treatment of OA.
BACKGROUND:Osteoarthritis (OA) is a common degenerative joint disease for which currently no anti-inflammatory therapy is available. Sauchinone (SAU), a key bioactive compound derived from Saururus chinensis, which has shown remarkable anti-inflammatory effects. METHODS: To evaluate the effect of SAU on OA progression, mouse chondrocytes were pretreated with SAU and subsequently stimulated with interleukin (IL)-1β. We found that SAU reduced the production of pro-inflammatory cytokines, such as nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor alpha (TNF-α), and IL-6. SAU also inhibited the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) at both the gene and protein level. Moreover, SAU promoted the expression of aggrecan, while inhibiting the expression of catabolic factors, such as matrix metalloproteinases (MMPs) and thrombospondin motifs 5 (ADAMTS-5) in mouse chondrocytes. Col X, vascular endothelial growth factor-A (VEGF)-A, and Runx2, major markers of hypertrophic chondrocytes, were markedly elevated following IL-1β stimulation, and were reduced by SAU treatment while having the opposite effect on Col II. Mechanistically, we found that SAU inhibited nuclear factor kappa B (NF-κB) and activated the Nrf2/HO-1 pathway. The beneficial effects of SAU were also observed in vivo using a mouse OA model. CONCLUSIONS: Our findings indicate that SAU may be a potential novel therapeutic for the treatment of OA.
Authors: Mauricio N Ferrao Blanco; Yvonne M Bastiaansen-Jenniskens; Mark G Chambers; Andrew A Pitsillides; Roberto Narcisi; Gerjo J V M van Osch Journal: Cartilage Date: 2021-06-24 Impact factor: 4.634