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. 2020 Apr 16;11(4):233. doi: 10.1038/s41419-020-2426-z

Fig. 5. HCP5/miR-3619-5p induced PPARGC1A and PGC1α interacted with CEBPB to induce CPT1 transcription.

Fig. 5

a According to KEGG pathway analysis by DAVID6.8, 39 miR-3619-5p target genes related to AMPK pathway were sort out. RT-qPCR results of 39 gene levels under miR-3619-5p overexpression versus control in GC cells. b Western blot results of the levels of p-AMPK and PGC1α in GC cells with or without MSC co-culture. c MiR-3619-5p, PPARGC1A mRNA, and HCP5 were all enriched in the immunoprecipitated products of Ago2. d MiR-3619-5p sites on PPARGC1A were predicted by starBase3.0, the mutated sites were designed for luciferase reporter assay. Luciferase activity of PPARGC1A WT/Mut was assessed in 293T cells under overexpression of miR-3619-5p versus control. e, f RT-qPCR results of PPARCG1A level and western blot results of PGC1α and CPT1 level in GC cells with indicated transfection. g Luciferase activity of CPT1 promoter reporter in 293T cells under indicated transfection. h RT-qPCR data showed the levels of PPARGC1A mRNA in GC cells of each group. i ChIP assay revealed that overexpression of HCP5 led to increased enrichment of CPT1 promoter in PGC1α precipitates. j CoIP analysis demonstrated that PGC1α protein in CEBPB precipitates was enhanced by enhancing HCP5, with the expression of CEBPB unchanged. **P < 0.01. Error bars indicate SD. Each assay was conducted for three times.