PCSK9Qβ‐003 vaccine upregulated FAO‐related factors and ameliorated renal fibrosis–related molecules in the UUO model. A, PCSK9Qβ‐003 increased the expression level of LDLR, VLDLR, and SREBP2. B and C, PCSK9Qβ‐003 remarkably upregulated the levels of fatty acid metabolism–related factors. D, The PCSK9Qβ‐003 vaccine obviously reduced the level of TGF‐β and Smad3. E through I, PCSK9Qβ‐003 treatment improved the protein expression of SREBP2, PPARα, ACOX1, TGF‐β, and pSmad3. n=6 per group. Data are expressed as means±SEM. ACOX1 indicates acyl‐CoA oxidase 1; CD36, cluster of differentiation 36; Cpt1a, carnitine palmitoyl transferase 1α; LDLR, low‐density lipoprotein receptor; LPL, lipoprotein lipase; PBS, the phosphate‐buffered saline group; PGC‐1, PPARγ coactivator‐1a; PPARα, peroxisome proliferator‐activated receptor α; PPARγ, peroxisome proliferator‐activated receptor γ; Sham, the sham group; SREBP2, sterol regulatory element–binding protein 2; TGF‐β, transforming growth factor‐β; Vac, the PCSK9Qβ‐003 vaccine group; VLDLR, very‐low‐density lipoprotein receptor; VLP, the Qβ virus‐like particles group.