Total cell lysate and ECM were isolated and resolved by SDS-PAGE in 4% to 20% gels as previously described.17 (link) Resolved gels were transferred to polyvinylidene difluoride membranes (Bio-Rad, Hercules, CA, USA) and probed with the following primary antibodies: ACTN (1:750; Santa Cruz Biotechnology, Dallas, TX, USA), BEST1 (1:500; Millipore, Billerica, MA, USA), COL4 (1:1000; Abcam, Cambridge, MA, USA), CRALBP (1:10000),25 (link) EZR (1:1000, Cell Signaling Technology, Danvers, MA, USA), LAM (1:1000; Abcam), OCLN (1:1000; Thermo Fisher Scientific), RPE65 (1:500; Millipore), RHO (1:500; Millipore), and TIMP3 (1:250; Abcam). Secondary antibodies were host-specific near-infrared (1:12,500) (LiCor, Lincoln, NE, USA) or horseradish peroxidase conjugated (1:10,000) (Jackson ImmunoResearch, West Grove, PA, USA) and signals were detected on the LiCor Odyssey or the Azure C500 (Azure Biosystems, Dublin, CA, USA) imaging systems. After image acquisition, Western blot data were analyzed quantitatively using LiCor Odyssey 3.0 and/or Image Studio Lite version 5.2 (LiCor) and Microsoft Excel (Redmond, WA, USA).