TY - JOUR
T1 - Novel nfκb inhibitor sc75741 mitigates chondrocyte degradation and prevents activated fibroblast transformation by modulating mir‐21/gdf‐5/sox5 signaling
AU - Weng, Pei Wei
AU - Yadav, Vijesh Kumar
AU - Pikatan, Narpati Wesa
AU - Fong, Iat Hang
AU - Lin, I. Hsin
AU - Yeh, Chi Tai
AU - Lee, Wei Hwa
N1 - Funding Information:
Funding: This study was also supported by grants from and Taipei Medical University (102TMU‐ SHH‐02) to Chi‐Tai Yeh.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/10/1
Y1 - 2021/10/1
N2 - Osteoarthritis (OA) is a common articular disease manifested by the destruction of cartilage and compromised chondrogenesis in the aging population, with chronic inflammation of syn-ovium, which drives OA progression. Importantly, the activated synovial fibroblast (AF) within the synovium facilitates OA through modulating key molecules, including regulatory microRNAs (miR’s). To understand OA associated pathways, in vitro co‐culture system, and in vivo papain-induced OA model were applied for this study. The expression of key inflammatory markers both in tissue and blood plasma were examined by qRT‐PCR, western blot, immunohistochemistry, en-zyme‐linked immunosorbent assay (ELISA) and immunofluorescence assays. Herein, our result demonstrated, AF‐activated human chondrocytes (AC) exhibit elevated NFκB, TNF‐α, IL‐6, and miR‐21 expression as compared to healthy chondrocytes (HC). Importantly, AC induced the apop-tosis of HC and inhibited the expression of chondrogenesis inducers, SOX5, TGF‐β1, and GDF‐5. NFκB is a key inflammatory transcription factor elevated in OA. Therefore, SC75741 (an NFκB in-hibitor) therapeutic effect was explored. SC75741 inhibits inflammatory profile, protects AC‐edu-cated HC from apoptosis, and inhibits miR‐21 expression, which results in the induced expression of GDF‐5, SOX5, TGF‐β1, BMPR2, and COL4A1. Moreover, ectopic miR‐21 expression in fibroblast-like activated chondrocytes promoted osteoblast‐mediated differentiation of osteoclasts in RW264.7 cells. Interestingly, in vivo study demonstrated SC75741 protective role, in controlling the destruction of the articular joint, through NFκB, TNF‐α, IL‐6, and miR‐21 inhibition, and inducing GDF‐5, SOX5, TGF‐β1, BMPR2, and COL4A1 expression. Our study demonstrated the role of NFκB/miR‐ 21 axis in OA progression, and SC75741′s therapeutic potential as a small‐molecule inhibitor of miR‐ 21/NFκB‐driven OA progression.
AB - Osteoarthritis (OA) is a common articular disease manifested by the destruction of cartilage and compromised chondrogenesis in the aging population, with chronic inflammation of syn-ovium, which drives OA progression. Importantly, the activated synovial fibroblast (AF) within the synovium facilitates OA through modulating key molecules, including regulatory microRNAs (miR’s). To understand OA associated pathways, in vitro co‐culture system, and in vivo papain-induced OA model were applied for this study. The expression of key inflammatory markers both in tissue and blood plasma were examined by qRT‐PCR, western blot, immunohistochemistry, en-zyme‐linked immunosorbent assay (ELISA) and immunofluorescence assays. Herein, our result demonstrated, AF‐activated human chondrocytes (AC) exhibit elevated NFκB, TNF‐α, IL‐6, and miR‐21 expression as compared to healthy chondrocytes (HC). Importantly, AC induced the apop-tosis of HC and inhibited the expression of chondrogenesis inducers, SOX5, TGF‐β1, and GDF‐5. NFκB is a key inflammatory transcription factor elevated in OA. Therefore, SC75741 (an NFκB in-hibitor) therapeutic effect was explored. SC75741 inhibits inflammatory profile, protects AC‐edu-cated HC from apoptosis, and inhibits miR‐21 expression, which results in the induced expression of GDF‐5, SOX5, TGF‐β1, BMPR2, and COL4A1. Moreover, ectopic miR‐21 expression in fibroblast-like activated chondrocytes promoted osteoblast‐mediated differentiation of osteoclasts in RW264.7 cells. Interestingly, in vivo study demonstrated SC75741 protective role, in controlling the destruction of the articular joint, through NFκB, TNF‐α, IL‐6, and miR‐21 inhibition, and inducing GDF‐5, SOX5, TGF‐β1, BMPR2, and COL4A1 expression. Our study demonstrated the role of NFκB/miR‐ 21 axis in OA progression, and SC75741′s therapeutic potential as a small‐molecule inhibitor of miR‐ 21/NFκB‐driven OA progression.
KW - MiR‐21/GDF‐5/SOX5 signaling
KW - NFκB inflammatory circuit
KW - NFκB inhibitor
KW - Osteoarthritis (OA)
KW - Therapeutics
UR - http://www.scopus.com/inward/record.url?scp=85117036795&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85117036795&partnerID=8YFLogxK
U2 - 10.3390/ijms222011082
DO - 10.3390/ijms222011082
M3 - Article
AN - SCOPUS:85117036795
SN - 1661-6596
VL - 22
JO - International journal of molecular sciences
JF - International journal of molecular sciences
IS - 20
M1 - 11082
ER -