EMBO/soda-nel huggingface dataset:
Serendipita indica E5′NT modulates extracellular nucleotide levels in the plant apoplast and affects fungal colonization (2018)
Figure 2

Figure 2. S. indica colonization leads to increased eATP levels in barley and Arabidopsis roots.

A. eATP levels in APF from S. indica inoculated and mock-treated barley root samples collected at the predominantly biotrophic phase (3 and 5 dpi) as well as the predominantly cell death associated phase (7 and 10 dpi). Error bars show the standard error of the mean obtained from three independent biological replicates at p< 0.05 (*), 0.01 (**) analyzed by Student's t-test.

B. eATP levels measured from culture medium collected from mock treated and S. indica colonized Arabidopsis seedlings at 3, 5, 7 and 10 dpi. Error bars represent ±SE of the mean from three independent biological replicates. RLU: relative light units. Asterisks indicate significance at p< 0.05 (*), 0.01 (**) analyzed by Student's t-test.

C. S. indica colonization of Arabidopsis dorn1-3 mutant and the parental Col-0aq lines quantified by qPCR at 3, 5, 7 and 10 dpi. The ratio of fungal (SiTEF) to plant (AtUBI) amplicons representing fungal colonization levels in plant root tissue was calculated using gDNA as template and the 2-ΔCT method. Error bars represent standard error of the mean of three technical replicates. The experiment was repeated 3 times for 3, 5 and 7 dpi with similar outcomes.

D. Transcript levels of S. indica E5′NT during colonization of barley and Arabidopsis at different symbiotic stages and in axenic culture. Error bars represent standard error of the mean of three independent biological replicates. CM = complex medium.
Serendipita indica E5′NT modulates extracellular nucleotide levels in the plant apoplast and affects fungal colonization (2018)
Figure 4

Figure 4. The ecto-5′-nucleotidase activity of SiE5′NT in the apoplast of Arabidopsis leads to enhanced S. indica colonization similar to that of the dorn1-3 (ATP receptor) mutant line.

A. Ecto-5′-nucleotidase activity measured in membrane protein preparations of Arabidopsis plants expressing Pro35S::E5′NT (#303), Pro35S::SPE5′NT:mCherry:E5′NTwoSP (#304) or Pro35S::mCherry (#305). E5′NT activity was measured after incubation with 100 µM of either ATP, ADP or AMP. In the membrane protein preparations from Pro35S::E5′NT (#303) lines phosphate release was specifically increased upon incubation with purines. Error bars represent the standard error of the mean from three technical repetitions. The coomassie stained SDS-PAGE shows the protein pattern of the membrane fractions for the individual transgenic lines. Equal volumes were loaded. The experiment was repeated two times with similar results.

B. Confocal microscopy images of Arabidopsis roots expressing either cytosolic mCherry (#305) or Pro35S::SPE5′NT:mCherry:E5′NTwoSP (#304) showing secretion of the E5′NT fusion protein. mCherry images show z-stacks of 14 image planes of 1 µm each. Scale bar=20 µm.

C. The transgenic Arabidopsis line Pro35S::E5′NT (#303) expressing untagged full length SiE5′NT was better colonized by S. indica. Error bars of the qPCR data represent ±SE of the mean from three independent biological replicates. Asterisks indicate significance (Student's t-test, * p< 0.05).

D. S. indica induced eATP release in different Arabidopsis transgenic lines. Culture medium was collected from mock treated or S. indica inoculated seedlings growing in liquid medium at 5 dpi and released eATP was measured. RLU: relative light units. Error bars represent ±SE of the mean from three biological replicates. Asterisks indicate significance to all other samples within the same treatment group (ANOVA, p<0.05).

E. S. indica colonization of transgenic lines at 5 dpi. Error bars represent ±SE of the mean from three biological replicates. Asterisks indicate significance to all other samples within the same treatment group (ANOVA, p<0.05).

F. Expression analysis of the eATP responsive gene At1g58420 measured by qRT-PCR. Error bars represent ±SE of the mean from three independent biological replicates (independent from those shown in Fig. 2C). Letters indicate significant groups (ANOVA, p<0.01, for the line 305 p<0.05).
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 1

Figure 1 - Prom1 is expressed in mouse primary hepatocytes and its deficiency prevents glucagon-induced gluconeogenesis

A-I. Correlative light electron microscopy (CLEM) showing Prom1 at the plasma membrane of primary hepatocytes. Primary hepatocytes were isolated from 12-week-old male WT (Prom1+/+) or KO ( Prom1cre-ert2-nlacz) mice. The boxed areas in panel (A, D, G) and (B, E, H) were magnified and presented as panel (B, E, H) and (C, F, I), respectively. Scale bar; 5 μm (A, D and G), 1 μm (B, E and H), and 0.2 μm (C, F and I).

J. Immunofluorescent staining of Prom1, CK19 and HNF4α in two serial cryosections of mouse liver. The boxed area in the top panel was magnified and presented as the bottom panel. Asterisks (*) in the top panel indicate cholangiocytes of the bile bucts and triangles (Γ) in the bottom panel indicate hepatocytes. Scale bar, 100 μm.

K-N. Primary hepatocytes were isolated from 12-week-old male Prom1+/+ (WT) or Prom1-/- (KO) mice and serum-starved. (K) Differentially expressed genes showing more than a 2-fold change with P < 0.05 (118 DEGs) induced (n=55) or repressed (n=63) by Prom1 knockout (n = 2/group). G6pc, glucose-6-phosphatase catalytic subunit; Pck1, phosphoenolpyruvate carboxykinase 1. (L) Relative expression levels of G6pc and Pck1 mRNAs after serum starvation for 16 hours were determined by qRT-PCR (n = 3/group). (M) Levels of the Prom1, PCK, G6PC and GAPDH proteins were determined by immunoblotting. (N) Prom1+/+ or Prom1-/- hepatocytes serum-starved for 8 hours were incubated with 2-[3H]deoxyglucose for 10 minutes. Glucose uptake was assessed by calculating the amount of cell-associated radioactivity normalized to the amount of protein (n = 3 mice/group).

Data information: Data are presented as mean values ± SEM. Two-tailed Student's t-test was used for statistical analysis. *P < 0.05, ***P < 0.001.
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 2

Figure 2 - Prom1 deficiency defects glucagon-induced gluconeogenesis

A. Levels of G6pc and Pck1 mRNAs in the liver of mice after 18 hours fasting were determined by qRT-PCR. The level of each mRNA was normalized to the level of 18s rRNA (n = 3/fed, 7 or 8/fasted).

B. Levels of phospho-PKA substrates (p-PKA substrates), phospho-CREB (p-CREB), CREB, G6pc Pck, Prom1 and GAPDH were determined after 18 hours fasting. Band intensity for p-CREB was quantified using Photoshop software.

C. Blood glucose levels (mg/dL) of mice after fasted for 24 hours (n = 12 or 14/group).

D. Serum glucagon level in the fed or fasted mice (n = 3/fed, 7 or 8/fasted).

E. Glycogen contents in the liver of mouse in each condition was shown by PAS (periodic acid schiff) staining. Scale bar, 500 μm.

F-J. Primary hepatocytes were isolated from 12-week-old male Prom1+/+ (WT) or Prom1-/- (KO) mice, serum-starved and stimulated with glucagon.

F. Levels of the G6pc and Pck1 mRNAs 2 hours after glucagon stimulation (10 nM) were determined by qRT-PCR. The level of each mRNA was normalized to the level of the 18S rRNA. For these experiments, primary hepatocytes were cultured under 3D conditions using a Matrigel matrix (n = 3 mice/group).

G. Levels of phospho-PKA substrates (p-PKA substrates), phospho-CREB (p-CREB), CREB, phospho-Inositol trisphosphate receptor (p-IP3R), IP3R, phospho-Hormone-Sensitive Lipase (p-HSL), HSL, Prom1 and Gapdh 10 minutes after glucagon stimulation (10 nM) were determined by immunoblotting.

H. The nuclear localization of p-CREB 10 minutes after glucagon stimulation (10 nM) was determined by immunofluorescence staining. Scale bar, 20 μm.

I. Relative PKA activities 10 minutes after glucagon stimulation (10 nM) were determined using the PKA assay kit in the absence or presence of 10 μM IBMX (n = 3 mice/group).

J. The cAMP concentration 10 minutes after glucagon stimulation (10 nM) was determined using the cAMP assay kit in the absence or presence of 10 μM IBMX (n = 3 mice/group).

Data information: Data are presented as mean values ± SEM. Two-tailed Student's t-test was used for statistical analysis. *P < 0.05, **P < 0.01, ***P < 0.001, and NS, not significant, P > 0.05.
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 3

Figure 3 - Prom1 deficiency prevents glucagon- induced hyperglycemia in vivo and β-adrenergic receptor-mediated PKA activation.

A-D. 12-week-old male WT ( Prom1+/+) and KO (Prom1-/-) mice were fasted for 4 hours and intraperitoneally injected with glucagon. (A) Blood glucose levels (mg/dL) were measured 0, 15, 30, 60 and 120 minutes after glucagon stimulation (200 µg/kg body weight, n = 10/group). (B) Levels of p-PKA substrates, p-CREB, CREB and GAPDH in the liver after a 5 minutes glucagon treatment were determined by immunoblotting (2 mg/kg body weight). (C) Relative PKA activities in the liver after a 5 minutes glucagon treatment were determined using the PKA assay kit (2 mg/kg body weight, n = 3/group). (D) The cAMP concentration in the liver after a 5 minutes glucagon treatment was determined using the cAMP assay kit (2 mg/kg body weight, n = 3/group).

E, F. Glucose disposal rates were measured in 12-week-old male mice using glucose, pyruvate (E) and insulin (F) tolerance tests (n = 10 mice/group).

G. Levels of p-AKT, AKT, p-ERK, ERK, IRβ and GAPDH were determined by immunoblotting after insulin stimulation (10 nM).

H-J. Primary hepatocytes were isolated from 12-week-old male WT ( Prom1+/+) and KO (Prom1-/-) mice, serum-starved for 16 hours and stimulated with isoprenaline. (H) The nuclear localization of p-CREB after isoprenaline stimulation (10 μM) for 10 minutes was determined by immunofluorescence staining. Scale bar, 20 μm. (I) Levels of p-PKA substrates, p-CREB, CREB, Prom1 and GAPDH after isoprenaline stimulation (10 μM) for 0, 10 or 20 minutes were determined by immunoblotting. (J) The cAMP concentration after isoprenaline stimulation (10 μM) for 10 minutes was determined using the cAMP assay kit in the presence of 10 μM IBMX (n = 3/group).

K, L. WT (Prom1+/+) and KO (Prom1-/-) mice were fasted for 4 hours and intraperitoneally injected with epinephrine (3µg/10g). (K) Blood glucose levels (mg/dL) were measured 0, 15, 30, 60 and 120 minutes after epinephrine stimulation (n = 13 or 14/group). (L) Levels of p-PKA substrates, p-CREB, CREB and GAPDH in the liver 15 minutes after epinephrine treatment were determined by immunoblotting.

M-O. WT (Prom1+/+) and KO (Prom1-/-) mice were fasted for 4 hours and subjected to immobilization test. (M) Blood glucose levels (mg/dL) were measured 0, 60 and 120 minutes after immobilization (n = 10/group). (N) Levels of p-PKA substrates, p-CREB, CREB and GAPDH in the liver after a 30 minutes-immobilization were determined by immunoblotting. (O) Serum epinephrine level of mice after a 30 minutes-immobilization was determined (n = 3/control group, 7 or 8/immobilized group).

Data information: Data are presented as mean values ± SEM. Two-tailed Student's t-test was used for statistical analysis. *P < 0.05, **P < 0.01, ***P < 0.001, and NS, not significant, P > 0.05.
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 4

Figure 4 - Radixin is the AKAP required for glucagon-induced PKA activation and hyperglycemia in vivo.

A. The expression of Prom1, radixin, AKAP7, AKAP8, AKAP8I, AKAP9, AKAP10, AKAP12 or AKAP13 was silenced in WT hepatocytes using siRNAs. Hepatocytes were then serum-starved for 18 hours and stimulated with glucagon (10 nM) for 10 minutes. The phosphorylation of PKA substrates was determined by immunoblotting.

B, C. Prom1 and radixin expression were silenced in WT (Prom1+/+) and KO (Prom1-/-) hepatocytes by infection with an adenovirus harboring sh-control (sh-Con), sh-radixin (sh-Rdx) or sh-Prom1 for 24 hours. Hepatocytes were further serum-starved for 18 hours and stimulated with glucagon (10 nM) for 10 minutes. (B) The nuclear localization of p-CREB after glucagon stimulation was determined by immunofluorescence staining. Blue; DAPI, Red; p-CREB. The percentage of cells with nuclear p-CREB staining among more than 300 cells in each group was also statistically analyzed (Figure EV3G). Scale bar, 20 μm. (C) Levels of p-PKA substrates, p-CREB, CREB, p-IP3R, IP3R, Prom1, radixin and GAPDH after glucagon stimulation (10 minutes) were determined by immunoblotting.

D. Immunofluorescence staining of Prom1 in mouse liver tranduced with adenoviral particles. Confocal microscope images of WT mouse liver infected with adenovirus harboring sh-Con or sh-Rdx linked with IRES-GFP. Scale bar, 20 μm.

E-G. 12-week-old male wild type mice were infected with an adenovirus harboring sh-control (sh-Con) or sh-radixin (sh-Rdx) for 3 days, fasted for 4 hours and intraperitoneally injected with glucagon. (E) Blood glucose levels (mg/dL) were measured 0, 15, 30, 60 and 120 minutes after glucagon administration (200 µg/kg body weight, n = 10 mice/ group). (F) Levels of p-PKA, p-CREB, CREB, radixin and GAPDH in the liver after a 10-minutes glucagon stimulation (2 mg/kg body weight) were determined by immunoblotting. (G) Glucose disposal rates in sh-Con or sh-Rdx (radixin) mice were measured using glucose, insulin and pyruvate tolerance tests (n = 10 mice/group).

Data information: Data are presented as mean values ± SEM. Two-tailed Student's t-test was used for statistical analysis. *P < 0.05, **P < 0.01, ***P < 0.001.
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 5

Figure 5 - Prom1 is required to confine radixin and actin.

A, B. Primary hepatocytes were obtained from 12-week-old male WT (Prom1+/+) and KO (Prom1-/-) mice or KO (Prom1-/-) hepatocytes infected with an adenovirus harboring LacZ (Ad-LacZ) or Prom1 (Ad-Prom1) for 24 hours. The molecular interaction between Prom1 and radixin (A) or Prom1 and PKA regulatory subunits (B) in these hepatocytes was determined by a proximity ligation assay using anti-Prom1 and anti-radixin antibodies (A) or anti-Prom1 and anti-PKA regulatory subunits (B), respectively. Scale bar, 20 μm.

C. Human liver specimens were analyzed by double immunostaining for PROM1 (red) and radixin (green). The lower panels represent the magnification of the square frame in the upper panels. Scale bar, 20 μm.

D. The molecular interaction between Prom1, radixin (RDX) and actin in WT mouse primary hepatocytes was determined by co-immunoprecipitation with an anti-Prom1 antibody or isotype control IgG. WCL; whole cell lysate.

E, F. HEK293 cells were transiently transfected with the combination of Prom1-FLAG and Myc-radixin plasmids for 24 hours. The molecular interaction between Prom1-FLAG and Myc-radixin was determined by co-immunoprecipitation using isotype control IgG, anti-Myc (E) anti-FLAG (F) antibodies.

G. The cellular localization of radixin and actin in WT (Prom1+/+) and KO (Prom1-/-) hepatocytes was determined by immunofluorescence staining for radixin and phalloidin staining. Scale bar, 20 μm.

H. Detergent-resistant lipid rafts were isolated from WT (Prom1+/+) and KO (Prom1-/-) mouse liver samples. Levels of the Prom1, radixin (RDX), flotillin and transferrin receptor (TfR) proteins were determined in each fraction after sucrose gradient ultracentrifugation using immunoblotting.

I. Detergent-resistant lipid rafts were isolated from WT (Prom1+/+) and KO (Prom1-/-) mouse primary hepatocytes after cholesterol depletion by methyl-β-cyclodextrin (mβCD, 30 mM) for 30 minutes at 4 oC. Levels of the Prom1, radixin, flotillin and transferrin receptor proteins were determined in each fraction after sucrose gradient ultracentrifugation using immunoblotting.
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 6

Figure 6 - Overexpression of radixin mutant mitigates glucagon-elicited hyperglycemia.

A, B. The molecular interactions between PROM1 and radixin mutants were determined by co-immunoprecipitation with an anti-FLAG antibody. HEK293 cells were co-transfected with plasmids expressing Myc-radixin and various deletion mutants of PROM1-FLAG (A) or with plasmids expressing PROM1-FLAG and various deletion mutants of Myc-radixin (B) for 24 hours.

C. The molecular interaction between PROM1-FLAG and Myc-radixin in the presence of increasing amounts of Myc-FERM was determined by co-immunoprecipitation with an anti-FLAG antibody.

D-F. WT primary hepatocytes were infected with an adenovirus harboring FERM-Myc (Ad-FERM-Myc) or LacZ (Ad-LacZ) for 48 hours. The cellular localization of radixin (D) and the nuclear localization of p-CREB after glucagon stimulation for 10 minutes (E) was determined by immunofluorescence staining. Scale bar, 20 μm. (F) Ad-FERM-Myc- or Ad-LacZ-expressing WT hepatocytes were serum-starved for 16 hours and stimulated with glucagon (10 nM) for 10 minutes. Levels of p-PKA substrates, p-CREB, CREB, FERM-Myc and GAPDH were determined by immunoblotting.

G-I. Twelve-week-old male wild type mice were infected with an adenovirus harboring GFP or FERM for 3 days, fasted for 4 hours and intraperitoneally injected with glucagon. (G) Blood glucose levels (mg/dL) were measured 0, 15, 30, 60 and 120 minutes after glucagon stimulation (0.2 mg/kg body weight, n = 10 mice/ group). (H) Levels of p-CREB, CREB, p-PKA substrates, and FERM in the liver 10 minutes after glucagon stimulation (2 mg/kg body weight) were determined by immunoblotting (n = 3 mice/ group). (I) Glucose disposal rates in GFP- or FERM-overexpressing mice were measured using glucose, pyruvate and insulin tolerance tests (n = 10 mice/group).

Data information: Data are presented as mean values ± SEM. Two-tailed Student's t-test was used for statistical analysis. *P < 0.05, **P < 0.01, ***P < 0.001.
Prominin-1-Radixin Axis controls hepatic gluconeogenesis by regulating PKA activity (2020)
Figure 7

Figure 7 - Prom1 disruption ameliorates glucagon-induced hyperglycemia in DIO mice.

A, B. (A) Wild type primary hepatocytes were infected with an adenovirus harboring sh-control (sh-Con), sh-radixin (sh-Rdx), GFP (Ad-GFP), and/or sh-resistant wildtype radixin (Ad-RdxR) or AKAP-dead LPTD mutant of radixin (Ad-LPTDR) for 24 hours. (B) Increasing amount of Ad-RdxR or Ad-LPTDR were infected to WT primary hepatocytes for 24 hours. Hepatocytes were further serum-starved for 18 hours and stimulated with glucagon (10 nM) for 10 minutes. Levels of p-PKA substrates, p-CREB, CREB, radixin, Myc-radixin and GAPDH were determined by immunoblotting.

C-F. Four-week-old male WT (Prom1+/+) and KO (Prom1-/-) mice were fed a high-fat diet for 8 weeks (Diet-Induced Obesity; DIO), and fasted for 4 hours before experiments. (C) DIO WT (Prom1+/+) and KO (Prom1-/-) mice were intraperitoneally injected with glucagon. Blood glucose levels (mg/dL) were measured 0, 15, 30, 60 and 120 minutes after glucagon (100 µg/kg body weight) stimulation (n = 10 mice/ group). (D) Levels of p-PKA substrates, p-CREB, CREB, Prom1 and GAPDH were determined by immunoblotting 10 minutes after glucagon (2 mg/kg body weight) stimulation (n = 3 mice/group). (E) Glucose disposal rates in DIO WT (Prom1+/+) and KO (Prom1-/-) mice were measured using glucose and insulin tolerance tests (n = 10 mice/group). (F) DIO KO (Prom1-/-) mice were infected with an adenovirus harboring LacZ or Prom1 for 24 hours, fasted for 4 hours and intraperitoneally injected with glucagon (100 µg/kg body weight). Blood glucose levels (mg/dL) were measured 0, 15, 30, 60 and 120 minutes after glucagon stimulation (GST). Glucose disposal rates were measured using the pyruvate tolerance test (PTT) (n = 10 mice/group).

Data information: Data are presented as mean values ± SEM. Two-tailed Student's t-test was used for statistical analysis. *P < 0.05, **P < 0.01, ***P < 0.001.

Expanded View Figure Legends
Cell-free reconstitution of microautophagic vacuole invagination and vesicle formation. (2000)
Figure 6

In vitro uptake is independent of components involved in homotypic vacuolar fusion. (A) Standard uptake reactions were performed (60 min, 27°C) in the presence of the indicated reagents using a mixture of vacuoles from strains DBY5734-16 (Δpep4) and DBY5734-19 (Δpho8). Therefore, homotypic vacuolar fusion and luciferase uptake could be assayed simultaneously from the same sample. Four independent experiments were averaged. Error bars indicate SD. For averaging, uptake and fusion activities of the control sample without inhibitor were set at 100%. Inhibitors were used at the following concentrations: anti-Sec17p, 1 μM; anti-Sec18p, 1 μM; Gdi1p, 2.5 μM; anti-Vam3p, 1 μM; anti-Vam7p, 1 μM; and anti-Nyv1p, 1 μM. (B) Vacuoles and cytosols were prepared from sec18-1 and from corresponding wild-type (Wt) cells grown and spheroplasted at 23°C. The isolated vacuoles and the cytosols were exposed to heat treatment (10 min, 37°C). Standard uptake reactions were performed with vacuoles and cytosols in the indicated combinations. Control reactions were performed in the absence of ATP. Five independent experiments were averaged; the sample with vacuoles and cytosol from wild-type cells was used as the 100% reference. Error bars indicate SD. Mut, mutant.
Intracellular vesicle acidification promotes maturation of infectious poliovirus particles. (2012)
Figure 1

Steady state levels of p62 decrease during poliovirus infection.

(A) H1-Hela cells were mock infected or infected with poliovirus (MOI = 50 pfu/cell) and cells were lysed at the indicated hours post-infection (h.p.i.). Three independent experiments were measured for quantification of p62 levels, and the blot shown is representative. (B) H1-Hela cells were mock infected or infected with poliovirus (MOI = 50 pfu/cell) and cells were lysed at 6 h.p.i. Cycloheximide (Cy.) was added to mock infected cells at a final concentration of 50 µg/mL, for 4 hours. Cells were then pre-treated with 0.1 µM bafilomycin A1 (Baf.A1) for 14 hours prior to infection and kept under treatment throughout infection. MG132 was used at a final concentration of 20 µM and added to the media at the time of infection. The blot shown is representative of three independent experiments.
Intracellular vesicle acidification promotes maturation of infectious poliovirus particles. (2012)
Figure 2

Degradation of p62 is dependent on the induction of autophagy.

(A) Cells were transfected with scrambled (SCR) or anti-LC3 (LC3) siRNAs, and 48 h later infected with PV at an MOI of 50 pfu/cell, or mock infected. Cells were collected at 6 h.p.i., and immunoblots were performed on lysates for p62, GAPDH, and LC3. (B) Cells were treated with 10 mM 3-MA for 12 h, then infected with PV at an MOI of 50 pfu/cell, or mock infected. Cells were collected at 6 h.p.i. and lysates were used for immunoblots.
Intracellular vesicle acidification promotes maturation of infectious poliovirus particles. (2012)
Figure 3

Intracellular poliovirus yields are not affected by lysosomal protease inhibitors.

Triplicate samples of H1-Hela cells were infected with PV at an MOI of 0.1 pfu/cell (A) or MOI of 50 pfu/cell (B). Cells were pre-treated with 20 µM leupeptin for 14 hours prior to infection and kept under treatment throughout infection. Cell-associated virus was collected at the indicated times post-infection, and virus titers were determined by plaque assay. Parallel infections were collected for Western blots of LC3 (A) or p62 (B) In (B) cell-associated virus was collected at 6 h.p.i. for plaque assay. (C) Infections were performed as in (A), then 10 µg/mL each of E64d and Pepstatin A (Pep.A) were added to the media at the time of infection. Inhibition of lysosomal degradation was confirmed by immunoblot for LC3 and GAPDH. (D) Infection at an MOI of 50 pfu/cell, with E64/Pep.A as in (C).