Journal: Investigative Ophthalmology & Visual Science
Article Title: Fc? Receptor Upregulation Is Associated With Immune Complex Inflammation in the Mouse Retina and Early Age-Related Macular Degeneration
doi: 10.1167/iovs.13-11821
Figure Lengend Snippet: Deposition of IgG and C1q and complement activation are observed in the choriocapillaris of patients with early AMD. (a) Immunohistochemical detection of IgG (green) and U. europaeus agglutinin I (red) (n = 9–11 per group) revealed IgG deposition in close proximity to choriocapillaris in both control and early AMD eyes. (b) Immunohistochemical detection of IgG (green) and C1q (red) (n = 9 per group) in aged-matched controls and patients with early AMD showed colocalization of IgG and C1q (arrows) in blood vessel lumens, indicating formation of immune complexes but not in drusen (star) (c) Immunohistochemical detection of IgG (green) and MAC (C5b-9, red) in aged-matched controls and patients with early AMD (n = 9 per group) revealed MAC and IgG colocalization around the choriocapillaris (arrowheads) and in drusen (star) in early AMD (inset). Note the intense autofluorescence of the RPE due to lipofuscin autofluorescence. CC, choriocapillaris. Scale bars: 50 μm and 25 μm (inset).
Article Snippet: The primary antibodies used were the following: FITC-labeled donkey F(ab′) 2 fragment anti-human IgG (Jackson ImmunoResearch Laboratories), polyclonal rabbit anti-C1q (Dako, Cambridge, UK), monoclonal mouse anti-MAC-C5b-9 (aE11; Dako), monoclonal mouse anti-human CD45 (HI30; BD Biosciences, Oxford, UK), monoclonal rabbit anti-FcγRIIb (EP888Y; Abcam), monoclonal rabbit anti-FcγRIIa (EPR6658; Epitomics–an Abcam Company, Burlingame, CA), monoclonal mouse anti-FcγRIII (2h7; Abcam), polyclonal goat anti-FcγRI (R&D Systems), and biotinylated Ullex europaeus agglutinin I (UEA1; Vector Laboratories).
Techniques: Activation Assay, Immunohistochemical staining