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. 2023 Feb 2;13:1890. doi: 10.1038/s41598-023-28830-7

Figure 4.

Figure 4

DNase pre-treatment reduces immune responses induced by “immunogenic” AAV8-CMV-eGFP and AAV2-CMV-eGFP vector lots. Human pDCs were stimulated with DNase-treated “immunogenic” AAV8 vector lots for 18 h (MOI: 1:1 × 106 vg). (a) Representative bright field images of purified pDCs stimulated with “immunogenic” AAV vector lots (upper image) and “immunogenic” AAV vector lots pre-treated with 100 μg/ml of DNase I (lower image). Scale bar is 500 μm. (b) Cytokine release of IP-10, MIP-1β, TNF-α and IFN-α2 by AAV8-stimulated pDCs. (c) Cytokine release by AAV2-stimulated pDCs. Since in the IFN-α2 measurements (b and c) and TNF-α measurement (b) some values fell below the assay range, the constant 1 was added to all measured IFN-α2 and TNF-α values for presentation in a semi-logarithmic plot. Shown are means and standard deviations. Statistical significance was determined using one-way ANOVA and Holm–Sidak’s post hoc analysis. P values: ≤ 0.05: *; ≤ 0.01: **; ≤ 0.001: ***.