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. 2020 May 18;123(2):298–306. doi: 10.1038/s41416-020-0872-0

Fig. 4. KSHV activates UPR and up-regulates PD-L1 on KSHV- infected macrophages.

Fig. 4

a Ire1α and XBP1s expression in mock- and KSHV-infected macrophages was evaluated by western blot analysis; b ATF4, CHOP and BIP expression in mock- and KSHV-infected macrophages was evaluated by western blot analysis. β-actin (β-ACT) was used as loading control. A representative experiment out of three is shown. Histograms represent the mean plus S.D. of the densitometric analysis of the ratio of each protein/β-ACT. *p-value < 0.05. c PD-L1 expression on mock- and KSHV-infected macrophages was evaluated by FACS analysis. A representative experiment is shown, and the mean of fluorescence intensity is indicated. Grey peaks represent the isotype controls. d Histograms representing the mean plus SD of PD-L1 MFI (Mean fluorescence Intensity) are also reported. *p-value < 0.05.