Protein was isolated from cell culture and human tissue (retina, RPE, and choroid) and total protein was determined using the Pierce BCA Protein Assay Kit (Thermo Fisher Scientific, Waltham, MA), as previously described55 (link). The death to preservation time for the human donor tissue was <8 h. Western blotting was performed as previously described with the housekeeping protein, beta-actin (Table 2), serving as a loading control58 (link).

Antibodies/stains used for western blot, immunofluorescence, and histology.

Antibody/stainSourceDilutionCatalog#
Alpha-Smooth muscle actin (αSMA)Sigma-Aldrich1:5000A5228
Apolipoprotein E (APOE)Millipore1:500AB947
Beta-ActinSCBT1:5000sc-47778
CD31Dako1:50M0823
Complement factor H (CFH)Quidel1:200A312
Hoechst 33258 pentahydrateInvitrogen2 μg/mlH3569
Iba1Wako1:200019-19741
Osteopontin (OPN)Sigma-Aldrich1:200O7264
Vitronectin (VTN)Santa-Cruz1:500SC-74484
Von-Kossa method for calcium kitPolysciences24633-1
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