Osteoarthritis in a dish: the effects of pro-inflammatory cytokines on cartilage derived from induced pluripotent stem cells V.P. Willard, B.O. Diekman, J. Sanchez-Adams, S.K. O'Connor, N. Christoforou, K.W. Leong, F. Guilak Osteoarthritis and Cartilage Volume 21, Pages S281-S282 (April 2013) DOI: 10.1016/j.joca.2013.02.590 Copyright © 2013 Terms and Conditions
Figure 1 Release of MMPs and GAGs from iPSC-derive cartilage in an in vitro model of OA. (A) All three IL-1α doses resulted in a significant increase in MMP release from iPSC neocartilage. (B) IL-1 α doses above 100 pg/ml resulted in an increased loss of GAG from the pellets and into the media. Groups not connected by the same letter as statistically different with P < 0.05, Mean ± SEM. Osteoarthritis and Cartilage 2013 21, S281-S282DOI: (10.1016/j.joca.2013.02.590) Copyright © 2013 Terms and Conditions
Figure 2 IL-1α induced degeneration of iPSC neocartilage. (A) Safranin-0 staining confirmed GAG loss from iPSC pellets at high IL-1α doses (positive staining is red, scale bar = 100 μm). (B) The compressive stiffness of iPSC-derived cartilage significantly decreased following IL-1α treatments above 100 pg/ml. Groups not connected by the same letter as statistically different with P < 0.05. Mean ±SEM. Osteoarthritis and Cartilage 2013 21, S281-S282DOI: (10.1016/j.joca.2013.02.590) Copyright © 2013 Terms and Conditions