ARPE-19 cells were planted into 6-well plates for immunoblotting, and were grown on 8-well chamber slides (Millipore, Billerica, MA, USA) for immunofluorescence. Cells were maintained in complete medium, and were harvested at 72 h post transfection. Immunoblotting and immunofluorescence were conducted using a previously described protocol60 (link),61 (link). Antibodies were detailed in Supplementary Table S3. ImageJ software (https://imagej.nih.gov/ij/index.html) was applied to determine and quantify protein expressions.
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