The keratinocyte-targeted lipid-polymer nanohybrids attenuate IMQ-induced mouse psoriatic skin inflammation. The mice were subcutaneously application with different nanoparticles for three times on Day 1, 3, and 5, then the psoriasis-like skin were induced by IMQ cream from Day 1 to Day 5. Mouse back skin was collected on Day 6. (A) The gross images of mouse back skin were represented on Day 6 by digital camera. (B) The close-up images by hand-held digital microscopy. (C) Skin sections were represented by H&E staining. Scale bars, 100 µm. (D) Quantification of mouse skin histology using the PASI score. (E) Epidermal thickness quantified by H&E staining. (F) Total counts of abscesses by Ly6G and MPO IHC staining. (G) TEWL measurement. Data are expressed as mean ± SEM (n=6). * P < 0.05, ** P < 0.01, *** P < 0.001.