Figure 9.
ATG37/ACBD5 is essential for pexophagy in human cells. (A and C) ACBD5 is needed for the delivery of peroxisomes to the lysosomes in HeLa (A) and Ntera-2 (C) cells expressing peroxisomally targeted mRFP-EGFP-SKL. Arrows point to the autolysosomes with acid-resistant mRFP fluorescence. Bars, 10 µm. (B) Quantitation of data in A. The percentage of cells with mRFP-labeled autolysosomes is shown as the mean + SD (error bars; n ≥ 50; *, P < 0.05 vs. control siRNA). (D) Quantitation of data in C. The ratio of mRFP and EGFP intensities per cell reflects the occurrence of pexophagy and is presented as the mean + SD (error bars; n ≥ 10 images; *, P < 0.05 vs. control siRNA).