Journal: Journal of Virology
Article Title: Midnolin inhibits coronavirus proliferation by degrading viral proteins
doi: 10.1128/jvi.00366-25
Figure Lengend Snippet: PEDV S1/S2/M/E proteins are degraded by autophagy via interaction with MARCH8 and Tollip. ( A and B ) HEK-293T cells were subjected to transfection with plasmids encoding Flag-Catch and MYC-MARCH8 or HA-Tollip for 24 h and subsequently explored with Co-IP assay. β-Actin was used as the sample loading control. ( C and D ) The MARCH8 and Tollip were cloned into pCold TF plasmid and Catch was cloned into pCold GST plasmid, respectively. Recombinant proteins were indicated in bacterial strain BL21 (DE3) and purified for the GST pulldown analysis. ( E–H ) HEK-293T cells were transfected with plasmids encoding Flag-Tollip and HA-S1/S2/M/E for 24 h and subsequently explored with Co-IP assay. β-Actin served as the sample loading control. ( I ) HeLa cells were exposed to transfection with plasmids encoding Flag-Tollip and HA-S1/S2/M/E, Flag-Catch and MYC-MARCH8, or Flag-Catch and HA-Tollip. Additionally, the cell nuclei were stained with 4′,6-diamidino-2-phenylindole (DAPI). Meanwhile, the colocalization of Tollip and S1/S2/M/E, Catch and MARCH8, or Catch and Tollip was observed with the use of confocal immunofluorescence microscopy; scale bars: 100 µm.
Article Snippet: The full-length MIDN , PEDV S1/S2/M/E , MARCH8, and Tollip were cloned into pCold GST plasmid (Clontech Laboratories, Inc., 3372) or pCold TF plasmid (Clontech Laboratories, Inc., 3365), respectively.
Techniques: Transfection, Co-Immunoprecipitation Assay, Control, Clone Assay, Plasmid Preparation, Recombinant, Purification, Staining, Immunofluorescence, Microscopy