Neutralizing goat antibody (10 μg) against mouse flt-1 (R&D Systems), isotype control goat IgG (10 μg; Jackson Immunoresearch), shRNAs (4 μg) against mbflt-1 or sflt-1, psflt-1 (4 μg), psflt-1* (4 μg), pCre (4 μg; gift of R.K. Nordeen, University of Colorado), pNull (4 μg), rmVEGF-A164 (20–500 ng; R&D Systems), sflt-1/Fc (5 μg; R&D Systems), or isotype control IgG1/Fc (5 μg; Jackson Immunoresearch) were injected (2 μl) into the cornea with a 33-gauge needle, as previously reported18 (
link). The efficiency of corneal transfection by naked plasmid of pGFP (gift of X. Li, University of Kentucky) or placZ (gift of B.T. Spear, University of Kentucky) exceeded 70%, as gauged by flow cytometry and X-gal staining (
Supplementary Fig. 11). We performed tail-vein injection of clodronate liposomes (200 μl) and intraperitoneal injection of anti-Gr-1 antibodies (200 μg; eBioscience) on each of the two days before and after corneal injection of pshRNA–sflt-1 to deplete peripheral monocytes/macrophages and neutrophils.
Ambati B.K., Nozaki M., Singh N., Takeda A., Jani P.D., Suthar T., Albuquerque R.J., Richter E., Sakurai E., Newcomb M.T., Kleinman M.E., Caldwell R.B., Lin Q., Ogura Y., Orecchia A., Samuelson D.A., Agnew D.W., Leger J.S., Green W.R., Mahasreshti P.J., Curiel D.T., Kwan D., Marsh H., Ikeda S., Leiper L.J., Collinson J.M., Bogdanovich S., Khurana T.S., Shibuya M., Baldwin M.E., Ferrara N., Gerber H.P., Falco S.D., Witta J., Baffi J.Z., Raisler B.J, & Ambati J. (2006). Corneal avascularity is due to soluble VEGF receptor-1. Nature, 443(7114), 993-997.