Suppression of early experimental osteoarthritis by in vivo delivery of the adenoviral vector-mediated NF-κBp65-specific siRNA L.X. Chen, Ph.D., L. Lin,

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Presentation transcript:

Suppression of early experimental osteoarthritis by in vivo delivery of the adenoviral vector-mediated NF-κBp65-specific siRNA L.X. Chen, Ph.D., L. Lin, Ph.D., H.J. Wang, Ph.D., X.L. Wei, Ph.D., X. Fu, J.Y. Zhang, C.L. Yu, Ph.D., M.D. Osteoarthritis and Cartilage Volume 16, Issue 2, Pages 174-184 (February 2008) DOI: 10.1016/j.joca.2007.06.006 Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 1 The β-gal staining of adenovirus foci. After infection with recombination adenovirus 48h, HEK-293 cells were stained withβ-gal for 24h and a comet-shaped adenovirus foci appeared (×400). Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 2 The effect of Ad-siRNA on expression of NF-κBp65 in chondrocytes. The chondrocytes were infected with Ad-siRNA at 100 MOI for 72h, total RNA was isolated and RT-PCR of NF-κBp65 was performed, the expression of NF-κBp65 was evidently decreased. Lanes 1, 2, 3, 4: infection with Ad-siRNA and lanes 5, 6, 7, 8: control. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 3 Production of TNF-α in vivo following intra-articular injection of various amount of the Ad-siRNANF-κBp65: after induction of OA, the expression of TNF-α in synovial fluid increased. And intra-articular injection of the Ad-siRNANF-κBp65 leads to dose-depended decrease in the concentration of TNF-α in synovial fluid aspirates, the lowest TNF-α concentration occurred with 1.6×108pfu/ml (A). The marked, acute synovial fluid leukocytosis was not seen at any viral loads (B). Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 4 β-gal staining of joint: after injection of Ad-lacZ for 3days, the joint was stained with β-gal, cartilage and synovium of joint were stained with blue. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 5 The effect of Ad- siRNANF-κBp65 on NF-κB DNA binding in cartilage: The protein of NF-κBp65 in cartilage of OA had an obvious DNA binding (lane 4) in comparison with the protein in normal cartilage (lane 2). Ad-siRNANF-κBp65 could significantly inhibit the NF-κB binding (lane 6), but Ad-siRNAscrambled had no effect on NF-κB binding (lane 5). This binding reaction was prevented with a 200-fold excess unlabeled NF-κB probe (lane 3). Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 6 The effects of Ad-siRNA and aspirin on the expression of IL-1β in the synovial fluid of OA at 1 and 2 weeks after surgery. #P<0.01 vs OA without treatment, *P<0.01 vs OA without treatment, and +P<0.01 vs treatment with aspirin. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 7 The effects of Ad-siRNA and aspirin on the expression of TNF-α in the synovial fluid of OA at 1 and 2 weeks after surgery. #P<0.01 vs OA without treatment, *P<0.01 vs OA without treatment, and +P<0.01 vs treatment with aspirin. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 8 The effects of Ad-siRNA on the expression of NF-κBp65 in cartilage. The cartilage was collected at 2 weeks after surgery, the expression of NF-κBp65 was assessed at the level of protein by Western blot. The densitometric quantification of NF-κBp65 was normalized to glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and expressed as arbitrary units (AU). Representative Western blot analysis of NF-κBp65 and GAPDH is shown and graph shows the mean±s.e.m. of the three independent experiments. *P<0.01 vs control. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 9 The effects of Ad-siRNA on the expression of NF-κBp65 in synovium. The synovium was collected at 2 weeks after surgery, the expression of NF-κBp65 was assessed at the level of protein by Western blot. The densitometric quantification of NF-κBp65 was normalized to GAPDH and expressed as AU. Representative Western blot analysis of NF-κBp65 and GAPDH is shown and graph shows the mean±s.e.m. of the three independent experiments. *P<0.01 vs control. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 10 Representative sections of articular cartilage from the medial femoral condyle of OA at 2 weeks after surgery were stained with H and E (left pane) and toluidine blue staining (right pane) of [(A) and (B)] OA without treatment, [(C) and (D)] OA that injected with Ad-lacZ, [(E) and (F)] OA that injected with Ad-siRNAscrambled, [(G) and (H)] OA that treated with aspirin, [(I) and (J)] OA that received injection of Ad-siRNANF-κBp65, and [(K) and (L)] rats that neither induced with arthritis nor treatment (×100). Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 11 Histologic grading of cartilage from femoral condyles of OA joints of rats at 2 weeks after surgery. Values are the mean±s.e.m. total score (0–6 scale) of lesions from OA rats without treatment; OA rats with intra-articular injection of Ad-lacZ; OA rats with intra-articular injection of Ad-siRNAscrambled; OA rats treated with aspirin; OA rats treated with intra-articular injection of Ad-siRNANF-κBp65 and rats that neither induced with arthritis nor treatment. Asterisks (*) denote values which differ at P<0.01. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 12 The representative sections of synovium from normal (A), OA (B), OA injected with Ad-lacZ (C), OA injected with Ad-siRNAscrambled (D), OA treated with aspirin (E) and OA treated with Ad-siRNANF-κBp65 (F) at 2 weeks after surgery with H and E staining (×200). Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

Fig. 13 Histologic grading of synovial membrane from OA joints of rats at 2 weeks after surgery. The samples were quantitatively classified according to synovium hypercellularity and the extent of synovitis. Values are the mean±s.e.m. total score (0–3 scale) of lesions from OA rats without treatment; OA rats with intra-articular injection of Ad-lacZ; OA rats with intra-articular injection of Ad-siRNAscrambled; OA rats treated with aspirin; OA rats treated with intra-articular injection of Ad-siRNANF-κBp65 and rats that neither induced with arthritis nor treatment. Asterisks (*) denote values which differ at P<0.01. Osteoarthritis and Cartilage 2008 16, 174-184DOI: (10.1016/j.joca.2007.06.006) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions