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Fig. 3 | Arthritis Research & Therapy

Fig. 3

From: Anabolic role of lysyl oxidase like-2 in cartilage of knee and temporomandibular joints with osteoarthritis

Fig. 3

LOXL2 promotes a differentiated phenotype and inhibits apoptosis in human articular chondrocytes from cartilage affected by osteoarthritis (OA). a Human articular OA chondrocytes (HAC-OA) transduced with adenoviruses for transient expression of LOXL2 (Ad-RFP-LOXL2) compared to cells transduced with its empty vector (EV) control (Ad-FP-EV) did not affect chondrocyte proliferation after 24 h. b Lentiviral cytomegalovirus (CMV)-LOXL2 transduction of HAC-OA compared to CMV-EV increased the mRNA levels of collagen type II α1 (COL2A1) (P = 0.043), sex determining region Y-box containing gene 9 (SOX9) (*P < 0.001), and aggrecan (ACAN) (P = 0.002). c Ad-RFP-LOXL2 transduction inhibited caspase 3/7 activity induced by TNF-α or IL-1β (*P = 0.006) compared to Ad-RFP-EV in HAC-normal (HAC-N) and HAC-OA cells in serum-free medium after 24 h. d Adenoviral transduction (Ad-RFP-LOXL2) HAC-OA in serum-free medium increased COL2A1 mRNA levels (*P < 0.001) compared to control (Ad-RFP-EV) in the presence of TNF-α (*P = 0.001)

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