EMBO/SourceData huggingface dataset:
Figure 2(B) Representative fluorescent micrographs of RPE1 cells of the indicated genotypes, either transduced with the indicated lentiviral vectors or left untransduced (mock). Cells were co-stained with the indicated antibodies. Blow-ups without Hoechst 33342 are magnified 2.5X. Scale bar: 5 μm.(C) Dot plot showing the average pixel intensities of the Myc signal at individual parent centrioles in RPE1 cells of the indicated genotypes, either transduced with the indicated lentiviral vectors or left untransduced (mock). Mean values (red lines) ± s.e.m. are reported. N > 50 centrosomes were assessed for each condition in as many individual cells; a.u. = arbitrary units. Kruskal-Wallis test (****P < 0.0001; n.s. = non-significant).(D) Dot plot showing the average pixel intensities of the PIDD1 signal at individual parent centrioles in RPE1 cells of the indicated genotypes, either transduced with the indicated lentiviral vectors or left untransduced (mock). Mean values (red lines) ± s.e.m. are reported. N > 50 centrosomes were assessed for each condition in as many individual cells; a.u. = arbitrary units. Kruskal-Wallis test (****P < 0.0001; n.s. = non-significant).(E) Representative fluorescent micrographs of RPE1 cells of the indicated genotypes, either transduced with the indicated lentiviral vectors or left untransduced (mock). Cells were co-stained with the indicated antibodies. Blow-ups without Hoechst 33342 are magnified 2.5X. Scale bar: 5 μm.
Figure 3(A) RPE1 cells of the indicated genotypes were treated either with DMSO or with DHCB for 24h. A fraction of DHCB treated cells were released into fresh medium for other 24h (release). Samples were subjected to immunoblotting; n = 3 independent experiments.(B) Fluorescence micrographs of RPE1 cells of the indicated genotypes, either treated for 24h with DHCB or with vehicle alone (DMSO). Blow-up without Hoechst 33342 is magnified 2.5X. Scale bar: 5 μm. (C) Immunofluorescence micrographs of RPE1 as in (B) were used to visually assess the percentage of cells presenting one or two nuclei. N = 3, ≥ 50 cells from each independent experiment. Mean values ± s.e.m. are reported. The increase in the number of binucleated cells between the wild type sample and all the other genotypes was assessed (ANOVA test; *P < 0.05). (D) Immunofluorescence micrographs of RPE1 as in (B) were used to visual score the number of centrosomes per cell by counting the number of γ-tubulin-positive centrioles. N = 3, ≥ 50 cells from each independent experiment. Mean values ± s.e.m. are reported. The increase in the number of cells with > 2 centrosomes between the wild type sample and all the other genotypes was assessed (ANOVA test; **P < 0.01). (E) Quantitative assessment of the fraction of RPE1 cells undergoing cytokinesis failure upon DHCB treatment, inferred on the basis of the increase of ploidies ≥ 4C (upper panel), and of the fraction of the abovementioned cells undergoing genome reduplication upon release after DHCB treatment (lower panel). Individual values of biological replicates, their mean and standard deviations are reported.(F) RPE1 cells were either left untransduced (mock) or transduced with lentiviral vectors expressing the indicated Myc-ANKRD26 constructs. Subsequently, cells were treated either with DMSO or ZM447439 for 24h and subjected to immunoblotting; n = 3 independent experiments.
Figure 4(B) A549 cells of the indicated genotypes were either left untransduced (mock) or transduced with lentiviral vectors expressing the indicated PIDD1-V5 derivatives and subjected to immunoblotting. N = 2 independent experiments.(C) Fluorescence micrographs of A549 cells of the indicated genotypes either left untransduced (mock), or transduced with PIDD1-V5 lentiviral vectors and co- stained with the indicated antibodies. Blow-ups without Hoechst 33342 are magnified 2.5X. Scale bar: 5 μm.(D) Dot plot showing the average V5 pixel intensities at individual parent centrioles in A549 cells of the indicated genotypes, either transduced with the indicated lentiviral vectors or left untransduced (mock). N > 50 centrosomes were assessed for each condition in as many individual cells; a.u. = arbitrary units. (E) Dot plot showing the average V5 pixel intensities at individual parent centrioles in A549 cells of the indicated genotypes, either transduced with the indicated lentiviral vectors or left untransduced (mock). N > 50 centrosomes were assessed for each condition in as many individual cells; a.u. = arbitrary units.(F) Representative fluorescence micrographs of A549 cells of the indicated genotypes. Cells were either left untransduced (mock) or transduced with PIDD1-V5 lentiviral vectors expressing the PIDD1 non-cleavable derivative (PIDD1S446A-S588A) or truncations thereof. Blow-ups without Hoechst 33342 are magnified 2.5X. Scale bar: 5 μm.
Figure 5(A) A549 cells of the indicated genotypes were either left untransduced or transduced with a lentiviral vector expressing PIDD1-V5 in its wild type form. Cells were treated either with DMSO or with ZM447439 for 24h and subjected to immunoblotting. N = 2 independent experiments.(B,C) A549 cells of the indicated genotypes were either left untransduced (mock), or transduced with lentiviral vectors expressing PIDD1-V5 in its wild type form or carrying the indicated point mutations. Cells were treated either with DMSO or with ZM447439 for 24h and subjected to immunoblotting. N = 2 independent experiments.(D) Fluorescence micrographs of A549 cells of the indicated genotypes. Cells were either left untransduced (mock) or transduced with PIDD1-V5 lentiviral vectors carrying the indicated point mutations, and stained with the indicated antibodies. Blow-ups without Hoechst 33342 are magnified 2.5X. Scale bar: 5 μm.
Figure 6(A) Representative fluorescence micrographs across the indicated cell cycle phases from RPE1 cells stably expressing CETN1-GFP. Centrosomal antigens were stained with the indicated antibodies. Blow-ups without Hoechst 33342 are magnified 2.5X. Scale bar: 5 μm.The centrioles subjected to fluorescence intensity measurement in (B) are labelled with numbers. (B) Quantification of the PIDD1 average pixel intensity at individual centrioles across the indicated cell cycle phases of RPE1 cells stained N > 50 centrioles were assessed for each phase, a.u. = arbitrary units.(C) Fluorescence micrographs of RPE1 cells stably expressing CETN1-GFP treated either with DMSO or with DHCB for 24h. Blow-ups 33342 are magnified 2.5X. Scale bar: 5 μm. (D) Dot plot showing PIDD1 average pixel intensities at individual parent centrioles calculated from images as in (C). Mean values (red lines) ± s.e.m. are reported. N > 50 centrosomes were assessed for each condition, a.u. = arbitrary units. (E) Movie stills of a representative RPE1 cell stably expressing CETN1-GFP treated with DHCB and subjected to time-lapse video microscopy in the presence of SiR-DNA. Time is expressed in minutes, relative to anaphase onset. The dashed line indicates the plasma membrane of the cell of interest, arrowheads indicate the centrosomes' position.(F) Centrosomal distance over time in RPE1 cells stably expressing CETN1-GFP and treated with DHCB. Time zero corresponds to the frame preceding anaphase onset. Coloured dots (lower panel) summarize the clustering time for each cell, mean ± standard deviation in black. Data calculated from four-dimensional imaging as in (E). N = 10 cells.
Figure 7(A) Dot plot showing the distance between parent centrioles pairs in A549 cells following the indicated treatments (ZM = ZM447439; REV = reversine). Nocodazole concentrations are 0.03 μM, 0.1 μM, 0.33 μM, 1 μM, 3.3 μM. Median (red) and 95% confidence interval thereof (black) are shown. N > 50 cells were analysed. (B) Immunoblot of A549 cells subjected to the indicated treatments for 24h as in (A). N = 3 independent experiments. (C) DNA content analysis of A549 cells subjected to the indicated treatments as in (A) either for 24h (left panels) or 48h (right panels). N = 2 independent experiments. (E) Immunoblots of RPE1 cells synchronized(F) Representative fluorescence micrographs of RPE1 cells synchronized Centrosomal antigens were stained with the indicated antibodies. Blow-ups without Hoechst 33342 are magnified 2X. Scale bar: 5 μm.
Figure 8(A) A549 cells of the indicated genotypes were treated for 24h as indicated (CPT = camptothecin, ZM = ZM447439). Samples were subjected to immunoblotting; n = 3 independent experiments. (B) A549 cells treated as in (A) were subjected to fluorescence microscopy and centrosome abundance was assessed by visually scoring γ-tubulin-positive centrioles per cell. N = 3, ≥ 50 cells from each independent experiment.(C) RT-qPCR analysis of PIDD1 mRNA expression in A549 cells upon treatment with increasing doses of Nutlin 3a (i.e. 3.3 μM or 10 μM) using two independent probes. The average fold of induction ± standard deviation is shown. N = 3 biological replicates with two technical replicates each. Comparisons were performed between treatments of every genotype and the corresponding treatment of wild type (WT) cellswith increasing doses of Nutlin 3a (i.e. 3.3 μM or 10 μM) using two independent probes. (D) Immunoblot analysis of samples treated N = 3 independent experiments.
Figure 2(B) The N-lobe kinase linker of PI4KB can be efficiently phosphorylated by PKA. Recombinant PKA at different concentrations (0, 7, 34, 168, or 840 ng) was incubated with recombinant (E. coli) wild-type PI4KB (20 μg) for 1 hour with 200 μM ATP and the amount of phosphorylation was followed using mass spectrometry. Relative abundance of Ser496 phosphorylated PI4KB was calculated using the relative intensity (total area) of the phosphorylated vs non-phosphorylated peptide (486-506).(C) PI4KB phosphorylation by PKA alters the affinity for c10orf76. The kinase activity of different variants of PI4KB (15 nM) was measured in the presence of varying amounts of c10orf76 (23 nM-1.5μM) with 100% PI lipid substrate (0.5 mg/L) and 100 μM ATP. The data was normalized to the kinase activity of PI4KB alone Error bars represent standard deviation of independent technical replicates (n=3).(D) PI4KB has the same kinase activity when Ser496 is phosphorylated or mutated to alanine. Kinase assay of PI4KB non-phosphorylated, phos-Ser496 or S496A (15 nM) on pure PI lipid vesicles (0.5 mg/L) with 100 μM ATP. The data was normalized to the kinase activity of WT PI4KB. Error bars represent standard deviation of independent technical replicates (n=3).(E) Engineered RL494EA PI4KB mutant shows decreased binding to c10orf76. His-pulldown assays of 6xHis-c10orf76 (3 μM) with wild-type or RL494EA PI4KB (1-2 μM).(F) RL494EA PI4KB activity is not inhibited by c10orf76. Kinase assays of either wild type or mutant RL494EA PI4KB (40 nM) were carried out with varying concentrations of c10orf76 (3.9 nM-2μM) with 100% PI lipid vesicles (0.5 mg/L) and 100 μM ATP. The data was normalized to the kinase activity of PI4KB alone. Error bars represent standard deviation of independent technical replicates (n=3).(G) Wild-type PI4KB and RL494EA PI4KB mutant have the same lipid kinase activity. Kinase assays of either wild-type and mutant PI4KB (10 nM) were carried out with 100% PI lipid vesicles (0.5 mg/L), 100 μM ATP, and PI4KB (300 nM) on Golgi-mimic vesicles (0.5 mg/mL) with 10 μM ATP. The data was normalized to the kinase activity of WT PI4KB. Error bars represent standard deviation of independent technical replicates (n=3).(H) FLH409AAA-c10orf76 mutant shows decreased affinity for PI4KB. His-pulldown assays of 6xHis-c10orf76 (1 μM) with wild-type PI4KB (1 μM). Samples washed a total of 4 times.(I) Kinase assay shows FLH409AAA c10orf76 inhibition of PI4KB is greatly reduced. Kinase assay of PI4KB (40 nM) and a concentration curve of c10orf76 (3.9 nM-2μM) on pure PI lipid vesicles (0.5 mg/L) with 100 μM ATP. The data was normalized to the kinase activity of PI4KB alone. Error bars represent standard deviation of independent technical replicates (n=3).
Figure 3(A) Transfections of HEK293 cells revealed that both wild-type GFP-PI4KB and RL494EA GFP-PI4KB localize to the Golgi.(B) WT c10orf76 also localized to the Golgi, however, the PI4KB binding deficient mutant of c10orf76 (FLH409AAA) predominantly localized to the cytosol.(D) Mitochondria recruitment experiment with wild-type PI4KB and c10orf76. Left: AKAP1-FRB-CFP is localized to the mitochondria before (top) and 5 minutes after rapamycin (100 nM) treatment (bottom). Middle: mRFP-FKBP12-PI4KB at high expression level is located in the cytosol before rapamycin (top) and translocates to the mitochondria after rapamycin induction (bottom). Right: eGFP-c10orf76 at a high expression level is located in the cytosol before rapamycin (top) and translocates to the mitochondria after rapamycin induction (bottom).(F) Mitochondria recruitment experiment with mutant PI4KB and WT c10orf76. Left: AKAP1-FRB-CFP is localized to the mitochondria before (top) and 5 minutes after (bottom) rapamycin treatment. Middle: mRFP-FKBP12-PI4KB(RL494EA) is located in the cytosol before rapamycin (top) and translocates to the mitochondria after rapamycin induction (bottom). Right: eGFP-c10orf76 is located in the cytosol before (top) and after (bottom) rapamycin induction.
Figure 4(A HAP1 cells were fixed and stained with antibodies examining PI4P and PI4KB Data information: Nuclei were stained with DAPI (blue). Scale bars represent 10 μm.B) HAP1 cells were fixed and stained with antibodies examining Golgi morphology markers (B). (C) Western blot of GBF1, PI4KB and B-Actin levels in both wild-type and c10orf76 KO HAP1 cells. Data information: Nuclei were stained with DAPI (blue). Scale bars represent 10 μm.(D) Markers of Arf1 activation - the coatomer proteins COPIα/γ and βCOP act as a readout for GTP-bound Arf1, while the native coatomer was detected with the CM1 antibody. Data information: Nuclei were stained with DAPI (blue). Scale bars represent 10 μm.
Figure 5(A) Viral infection assays determining viral titers by end-point titration at 0 hours and 8 hours in HAP1 wild-type or c10orf76 knockout cells. Left: Coxsackievirus A10 infection. Middle: Poliovirus-1 infection. Right: Coxsackievirus B3 infection. Titre values for c10orf76 knockout cells at 8 hours were statistically evaluated compared to c10orf76 knockout titres at 0 hours and wild-type titres at 8 hours using a one-way ANOVA. **, P<0.01; N.S., P>0.05.(B) Viral infection assays determining virus titers by end point titration at 8 hours in HeLa wild-type and PI4KB knockout cells upon transfection of wild-type PI4KB, the complex-disrupting RL494EA PI4KB mutant or the kinase dead D674A PI4KB mutant. Left: Coxsackievirus A10 infection. Middle: Poliovirus-1 infection. Right: Coxsackievirus B3 infection. Values were statistically evaluated compared to the GalT control using a one-way ANOVA. **, P<0.01; *, P<0.05; N.S., P>0.05.
Fig. 1Overall structure of 2019-nCoV RBD bound with ACE2. ACE2 is colored green. 2019-nCoV RBD core is colored cyan and RBM is colored red. Disulfide bonds in the 2019-nCoV RBD are shown as stick and indicated by yellow arrows. The N-terminal helix of ACE2 responsible for binding is labeled.
Fig. 2Alignment of the 2019-nCoV RBD (core in cyan and RBM in red) and SARS-CoV RBD (core in orange and RBM in blue) structures.Structural alignment of 2019-nCoV RBD/ACE2 and SARS-CoV RBD/ACE2 complexes. 2019-nCoV RBD is colored cyan and red, its interacting ACE2 is colored green. SARS-CoV RBD is colored orange and blue, its interacting ACE2 is colored salmon. The PDB code for SARS-CoV RBD/ACE2 complex: 2AJF.
Fig. 3Contacting residues shown as stick at the 2019-nCoV RBD/ACE2 and SARS-CoV RBD/ACE2 interfaces. Positions in both RBDs involved in ACE2 binding are indicated by red labels.
Figure 1(B-K') The Drosophila posterior midguts containing Su(H)-Gal4>UAS-CD8:GFP (Su(H)>GFP) with sucrose (Suc, control) (B-C'), P.e for 36 h (D-F'), Ecc15 for 36 h (G-I') and DSS for 36 h (J-K') were immunostained for GFP (green), PH3 (red) and DAPI (blue). (C-C', E-E', H-H' and K-K') Magnification of selected areas containing PH3+GFP─ cells from B, D, G and J. The EB cell close to the PH3+ cell (white arrow) in C-C' is out of focus. (F-F' and I-I') Magnification of selected areas containing PH3+ EBs (GFP+) from D and G. White arrowheads and red arrows indicate PH3 in GFP─ and GFP+ cells, respectively. (L and M) Quantification of PH3 GFP─ ISCs (L) and PH3+GFP+ EBs (M) with given treatments. n = 21 guts for each treatment.
Figure 2(D-F'') When the ISCs were marked by esgGal4, su(H)-Gal80>UAS-GFP, PH3 expression was found in GFP+ ISCs with feeding of Suc (control) (D-D''), P.e (E-E'') and Dss (F-F''). However, PH3 expression is present in EBs with GFP─Pros─ and small nuclei upon P.e infection (E-E'', red arrows). The white arrows indicate GFP+ cells with PH3 expression. (G) Quantification of PH3+GFP─Pros─ EBs with given treatments. n = 11 guts for each treatment. Data information: Three independent experiments were performed, and error bars are ± SEM. ***, P < 0.001 (Student's t-test) (G).
Figure 4(D-N') The Drosophila midguts expressing Su(H)ts>GFP with control (D-E'), UAS-RasV12 for 6 days (F-H'), EGFRA887T for 4 days (I-K') and UAS−λTop for 5 days (L-N') were immunostained for GFP (green), PH3 (red) and DAPI (blue). (E-E', G-G', J-J' and M-M') Magnification of selected areas containing PH3+GFP─ cells from D, F, I and L. (H-H', K-K' and N-N') Magnification of selected areas containing PH3+GFP+ cells from F, I and L. White arrowheads and red arrows indicate PH3 in GFP─ ISCs and GFP+ EBs, respectively. (O, P) Quantification of PH3+GFP─ (P) and PH3+GFP+ (O) in midguts with indicated genotypes. n = 13 guts for each genotype. (Q) Quantification of PH3+ EBs (GFP+) with the given genotypes in response to P. e infection. n = 11 guts for each genotype.
Figure 6(B-C''') Flies expressing UAS-Flp; Su(H)ts UAS-CD8:GFP; ActP>Stop>LacZ were fed with Suc (B-B''') or P.e (C-C''') for 36h and their midguts were dissected and immunostained with antibodies against GFP, β-gal and Dl. Blue arrowheads indicate Dl+ ISCs; white arrows indicate GFP+ EBs; and red arrowheads indicate EB progeny cells (LacZ+GFP─). (D) Quantification of Dl+ ISC-like cells from EBs (GFP─LacZ+Dl+) in the control, P. e infected midguts, n=50. (E) Quantification of Dl+ ISC-like cells from EBs (GFP─LacZ+Dl+) in the control with Suc or P. e, or knockdown of EGFR with Suc or P. e infection, n=50.
Figure 7(A-C''') The midguts from adult female flies expressing UAS-Flp; Su(H)ts UAS-CD8:GFP; ActP>Stop>LacZ with (B-B''') or without (A-A''') UAS-RasV12 or with UAS-RasV12 and UAS-stg-RNAi (C-C''') were dissected and immunostained with antibodies against GFP, β-gal and Dl. The bigger GFP─ nucleus with LacZ expression (only red arrowheads) indicate differentiating or mature ECs. Blue arrowheads indicate Dl+ ISCs; white arrows indicate GFP+ EBs; and red arrowheads indicate EB progeny cells (LacZ+GFP─). (D) Quantification of Dl+ ISC-like cells from EBs (GFP─LacZ+Dl+) in the indicated genotypes, n=50.
Figure 8(C-E'') The representative twin clones from midguts when EGFRA887T is overexpressed in EBs (D-D'', red and green arrows) or adult flies were fed with P.e for 36h (E-E'', red and green arrows), but no twin clone is found in the control (C-C''). (F) Quantification of different types of twin clones in the control midguts, or in the midguts with EGFRA887T overexpression or P.e infection. n = 10 guts for each genotype.
Figure 9(A-C'') ISCs from EBs upon RasV12 expression or P. e infection could differentiate to generate EE or pre-EE cells (B-C'', LacZ+Pros+GFP─, blue arrowheads), but no EE or pre-EE cells from EBs are found in the control (A-A'', white arrowheads). (D) Quantification of EE cells from progenies of EBs with indicated genotypes or treatments. n = 9 guts for each genotype or treatment.
Figure 1Flow cytometric analysis of γδ T cells in RORγtCRE-STAT3F/F (Cre+) and littermate control mice (Cre−). In graphs, each symbol represents a mouse and line the median. *p < 0.05, **p < 0.01, ***p < 0.001 using Mann-Whitney test. Numbers of γδT17 cells in the LN (A) and skin (B) before (steady-state) and after (IMQ) IMQ-induced psoriasis. Steady-state: n = 8; 4 experiments, IMQ: n = 11-12; 4 experiments.Representative micrographs indicating ear skin sections stained for H&E before and after IMQ-induced psoriasis (scale bar = 100μm). Quantification of epidermal thickening from H&E stained sections. Steady-state: n = 8; 4 experiments, IMQ: n = 11-12; 4 experiments. Each symbol is the average thickening from 5 micrographs measured in μm.
Figure 2Flow cytometric analysis of γδ T cells in STAT4−/− (−/−) and littermate control mice (+/−). In graphs, each symbol represents a mouse and line the median. Numbers of γδT17 cells in the LN and skin (staining as in Fig EV1) before (steady-state) and after (IMQ) IMQ-induced psoriasis. Steady-state: n = 6; 3 experiments, IMQ: n = 11; 4 experiments.Representative micrographs indicating ear skin sections stained for H&E before and after IMQ-induced psoriasis (scale bar = 100μm). Quantification of epidermal thickening from H&E stained sections. Steady-state: n = 6; 3 experiments, IMQ: n = 8; 3 experiments. Each symbol is the average thickening from 5 micrographs measured in μm.
Figure 3Flow cytometric analysis of lymph node γδ T cells in RORγtCRE-STAT3F/F (Cre+) and littermate control mice (Cre−). In graphs, each symbol represents a mouse or experiment and line the median. Representative dot plots showing IL-17A (A) or IL-17F (D) and IFNγ production in γδ T cells before (steady-state) and after IMQ-induced psoriasis. Numbers in gate indicate % positive cells; numbers outside the gate indicate mean fluorescence intensity of IL-17A or IL-17F. (B, E) Frequency of IL-17A+ (B) and IL-17F+ (E) γδ T cells before (steady-state) and after (IMQ) IMQ-induced psoriasis. (C, F) Quantification of mean fluorescence intensity (MFI) of IL-17A (C) and IL-17F (F) staining in γδ T cells after IMQ-induced psoriasis (each color represents a different experiment).Frequency of IL-17A+ and IL-17F+ γδ T cells or IL-17A (G) and IL-17F (H) MFI following culture with IL-1β, IL-23 or nothing. Each symbol represents one experiment.
Figure 4Flow cytometric analysis of lymph node γδ T cells in RORγtCRE-STAT3F/F (Cre+) and littermate control mice (Cre−). In graphs, each symbol represents a mouse or experiment and line the median. Representative dot plots showing IL-22 and IL-17A production in γδ T cells (A) and frequency of IL-22+ γδ T cells (B) before (steady-state) and after (IMQ) IMQ-induced psoriasis. Steady-state: n = 6; 3 experiments, IMQ: n = 8-9; 3 experiments.Flow cytometric analysis of lymph node γδ T cells in RORγtCRE-STAT3F/F (Cre+) and littermate control mice (Cre−). In graphs, each symbol represents a mouse or experiment and line the median. Representative dot plots showing IL-22 and IL-17A production in γδ T cells (C) and frequency of IL-22+ γδ T cells (D) following culture without (−) or with 40ng/ml recombinant IL-23 (n = 9-10, 3 experiments).Frequency of IL-22+ γδ T cells following culture with IL-1β, IL-23 or nothing. Each symbol represents one experiment. Open circles = Cre+ (each color represents a different culture condition).
Figure 5Flow cytometric analysis of lymph node γδ T cells in STAT4−/− (−/−) and littermate control mice (+/−). (A, ) Frequency of IL-17A+ (A) γδ T cells before (steady-state) and after (IMQ) IMQ-induced psoriasis. (B) Frequency of IL-17F+ γδ T cells before (steady-state) and after (IMQ) IMQ-induced psoriasis. (C) Quantification of mean fluorescence intensity (MFI) of IL-17A staining in γδ T cells after IMQ-induced psoriasis (D) Quantification of mean fluorescence intensity (MFI) of IL-17F staining in γδ T cells after IMQ-induced psoriasis.Flow cytometric analysis of lymph node γδ T cells in STAT4−/− (−/−) and littermate control mice (+/−). Frequency of IL-22+ γδ T cells before (steady-state) and after (IMQ) IMQ-induced psoriasis.Flow cytometric analysis of lymph node γδ T cells in STAT4−/− (−/−) and littermate control mice (+/−). Frequency of IL-22+ γδ T cells following culture without (−) or with 40ng/ml recombinant IL-23