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. 2022 Jun 2;18:569–582. doi: 10.1016/j.bioactmat.2022.05.026

Fig. 2.

Fig. 2

Macrophage phenotype regulation based on RA@BSA@Cur NPs. (a) The schematic illustration of RA@BSA@Cur NPs regulated macrophage polarization under LPS. (b) The immunofluorescence and quantification results of RAW264.7 cultured different BSA-related NPs in LPS condition. CD86+ M1 macrophage (yellow arrow) and CD206+ M2 macrophage (white arrow), nuclei (DAPI: blue). Scale bar, 50 μm. (c&d) The flow cytometry analysis and quantification results of RAW264.7 (gated on F4/80+) cultured different BSA-related NPs in LPS condition. (e) The macrophages' M1 inhibition and M2 promotion regulated by RA@BSA@Cur NPs may be through the NF-κB pathway. (f) The inflammatory factors IL-6, TNF-α, and IL-4 changes after RA@BSA@Cur treatment. (n = 3 independent samples). Statistical differences were determined by using the Analysis of Variance (ANOVA) with Bonferroni's multiple comparison test (*p < 0.05, **p < 0.01, ***p < 0.001, ns: no significant; a.u. means arbitrary unit).