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. 2022 Aug 2;26(4):297. doi: 10.3892/mmr.2022.12813

Figure 6.

Figure 6.

NAT8L promotes SP-induced autophagy in PAECs. (A) Transfection efficiency of siRNA-NAT8L in PAECs. (B) Protein expression of LC3B, Beclin-1 and ATG7 in PAECs transfected with siRNA-NAT8L and the combination of siRNA-NAT8L and pcDNA3.1-GAS5, as assessed by Western blotting. (C) The abundance of LC3B in PAECs, as assessed by immunofluorescence assays (scale bar, 25 µm; magnification, ×20). (D) Autophagic vacuoles in the cellular cytoplasm of PAECs, as evaluated by transmission electron microscopy (scale bar, 2 µm; magnification, ×10,000). Red arrows indicate the autophagic vacuoles. *P<0.05; **P<0.01. There were at least three replicates in each group available for analysis. SP, spermidine; PAECs, pulmonary artery endothelial cells; siRNA, small interfering RNA.