Bouin's fixed 5-μm thick sections were processed for immunohistochemistry. Staining was carried out using a Lab Vision PT module (Thermo Fisher Scientific) and Autostainer 480S (medac) as described previously (Umer et al., 2021 (link)). Primary antibodies against HOOK1 (1:200; 10871-1-AP) (Zhou et al., 2009 (link)), LC3B (1:100; ab58610, Abcam), ARL3 (1:200; 10961-1-AP) (Qi et al., 2013 (link)), GOPC (1:200; 12163-1-AP, Thermo Fisher Scientific), COPA (1:200; BS-12464R, Thermo Fisher Scientific), PICK1 (1:200; PA5-76084, Thermo Fisher Scientific), SP56 (1:200; MA1-10866, Thermo Fisher Scientific), acrosin (1:200; BS-5151R, Thermo Fisher Scientific), AKT1 (1:100; 4060, Cell Signaling Technology), SQSTM1 (1:200; 5114, Cell Signaling Technology) and ARF3 (1:200; 10800-1-AP, Proteintech) were used.
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