GRA15 enhances IFNγ-induced PVM decoration with autophagy-related proteins and endo-lysosomal-mediated vacuole destruction in HFFs A-G) HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h.Figure 2HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (A) Total ubiquitin (n=3 for RH, n=5 for Pru and n=3 for PruΔgra15), is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (B) K63-linked ubiquitin (n=3 for RH, n=3 for Pru and n=3 for PruΔgra15), is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (C) p62 (n=3 for RH, n=10 for Pru and n=7 for PruΔgra15, n=4 for Pru Δgra15+GRA15), is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (D) NDP52 (n=3 for RH, n=3 for Pru and n=3 for PruΔgra15), is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (E) LC3B (n=3 for RH, n=3 for Pru and n=3 for PruΔgra15, n=3 for Pru Δgra15+GRA15), is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (F) GABARAP (n=3 for RH, n=3 for Pru and n=3 for PruΔgra15) is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. HFFs were stimulated with for 24 h with 10U/mL IFNγ or left unstimulated and subsequently infected with RH, Pru or PruΔgra15 parasites for 3 h. The percentage of vacuoles that stained positive for (G) LAMP1 (n=3 for RH, n=3 for Pru and n=3 for PruΔgra15) is shown in the left bar diagram. On the right-hand side, a representative fluorescent image is shown for the Toxoplasma Pru strain, which expresses GFP. DNA was stained with Hoechst 33258. Scale bar is 10 µm. The yellow box inside each representative image is shown as inset pictures with magnification. H) The number of PVs per 20X objective field was counted and compared between IFNγ-stimulated and IFNγ + bafilomycin A1 (100 nM) treated HFFs 24 h p.i. with Pru strain. Images from at least 6 fields were taken for each condition (n=3).