by Helen M. Lazear, Brian P. Daniels, Amelia K. Pinto, Albert C

Slides:



Advertisements
Similar presentations
Volume 70, Issue 1, Pages (July 2006)
Advertisements

IFN-γ Primes Keratinocytes for HSV-1–Induced Inflammasome Activation
Volume 165, Issue 5, Pages (May 2016)
Local Inflammatory Cues Regulate Differentiation and Persistence of CD8+ Tissue- Resident Memory T Cells  Tessa Bergsbaken, Michael J. Bevan, Pamela J.
by Silke Huber, Reinhard Hoffmann, Femke Muskens, and David Voehringer
Macrophages from C3-deficient mice have impaired potency to stimulate alloreactive T cells by Wuding Zhou, Hetal Patel, Ke Li, Qi Peng, Marie-Bernadette.
Control of coronavirus infection through plasmacytoid dendritic-cell–derived type I interferon by Luisa Cervantes-Barragan, Roland Züst, Friedemann Weber,
Aryl Hydrocarbon Receptor Regulates Pancreatic IL-22 Production and Protects Mice From Acute Pancreatitis  Jing Xue, David T.C. Nguyen, Aida Habtezion 
Accelerated Migration of Respiratory Dendritic Cells to the Regional Lymph Nodes Is Limited to the Early Phase of Pulmonary Infection  Kevin L Legge,
Volume 14, Issue 4, Pages (February 2016)
Volume 18, Issue 5, Pages (May 2010)
Fig. 1 DMF promotes viral infection.
Fig. 1 ZIKV-related flaviviruses cause fetal demise in mice that can be prevented by mAb treatment. ZIKV-related flaviviruses cause fetal demise in mice.
Activation of the Innate Signaling Molecule MAVS by Bunyavirus Infection Upregulates the Adaptor Protein SARM1, Leading to Neuronal Death  Piyali Mukherjee,
IFN-γ antagonizes TGF-β in vivo.
Volume 16, Issue 12, Pages (September 2016)
Volume 146, Issue 6, Pages (September 2011)
Volume 140, Issue 2, Pages e4 (February 2011)
Gestational Stage and IFN-λ Signaling Regulate ZIKV Infection In Utero
Innate immune system plays a critical role in determining the progression and severity of acetaminophen hepatotoxicity  Zhang-Xu Liu, Sugantha Govindarajan,
Volume 46, Issue 6, Pages e4 (June 2017)
Volume 7, Issue 2, Pages (February 2010)
Volume 21, Issue 8, Pages (November 2017)
CD169+ macrophages play a critical role in mediating innate immune cell reorganization. CD169+ macrophages play a critical role in mediating innate immune.
A Mouse Model of Zika Virus Pathogenesis
Volume 4, Issue 3, Pages (September 2008)
Volume 17, Issue 8, Pages (August 2009)
Volume 33, Issue 1, Pages (July 2010)
Volume 15, Issue 8, Pages (May 2016)
TAM Receptors Are Not Required for Zika Virus Infection in Mice
Volume 70, Issue 1, Pages (July 2006)
Volume 21, Issue 6, Pages (November 2017)
Volume 18, Issue 9, Pages (September 2010)
Fig. 1 BX795 suppresses HSV-1 infection.
Volume 48, Issue 4, Pages e4 (April 2018)
Volume 29, Issue 6, Pages (December 2008)
Volume 22, Issue 1, Pages (January 2014)
Incorporation of the B18R Gene of Vaccinia Virus Into an Oncolytic Herpes Simplex Virus Improves Antitumor Activity  Xinping Fu, Armando Rivera, Lihua.
Volume 21, Issue 11, Pages (November 2013)
Exosomal regulation of lymphocyte homing to the gut
Fig. 1 CpG induces the expression of OX40 on CD4 T cells.
Volume 33, Issue 4, Pages (October 2010)
Volume 22, Issue 2, Pages (February 2005)
Volume 30, Issue 2, Pages (February 2009)
Melissa B. Uccellini, Adolfo García-Sastre  Cell Reports 
Volume 22, Issue 1, Pages (January 2014)
Immune Response in Stat2 Knockout Mice
Lukxmi Balathasan, Vera A
Volume 19, Issue 9, Pages (May 2017)
Volume 21, Issue 1, Pages (January 2017)
Volume 26, Issue 2, Pages (February 2018)
Javed Mohammed, Andrew Ryscavage, Rolando Perez-Lorenzo, Andrew J
Volume 16, Issue 12, Pages (September 2016)
Figure 4 Increased susceptibility of MIF−/− CD4+ T cells to immunosuppression by Dex in EAE (A) MOG35-55 peptide-activated donor cells from wild-type (Wt)
IFN-γ antagonizes TGF-β in vivo.
Volume 26, Issue 6, Pages e4 (February 2019)
Volume 17, Issue 10, Pages (October 2009)
Fig. 5 A competent Fc is required for the antitumor immune response.
Sindbis Viral Vectors Transiently Deliver Tumor-associated Antigens to Lymph Nodes and Elicit Diversified Antitumor CD8+ T-cell Immunity  Tomer Granot,
Figure 1 EAE severity and CNS pathology in Dex-treated MIF−/− and Wt mice Wild-type (Wt) and macrophage migration inhibitory factor (MIF)−/− mice were.
Fig. 4 Administration of BMS to mice inhibits autoimmune-relevant pharmacodynamic endpoints driven by IL-12 and IFNα. Administration of BMS
by Yu Miyazaki, Xiaofei Du, Shin-ichi Muramatsu, and Christopher M
Volume 20, Issue 4, Pages (April 2012)
Volume 25, Issue 6, Pages (June 2017)
by Gonghua Huang, Yanyan Wang, Peter Vogel, and Hongbo Chi
Fig. 2 NDR2-deficient mice are more vulnerable to RNA viral infection.
Plasmacytoid dendritic cells promote systemic sclerosis with a key role for TLR8 by Marie Dominique Ah Kioon, Claudio Tripodo, David Fernandez, Kyriakos.
Targeting p53-dependent stem cell loss for intestinal chemoprotection
Volume 23, Issue 12, Pages (June 2018)
Volume 11, Issue 6, Pages (June 2012)
Presentation transcript:

Interferon-λ restricts West Nile virus neuroinvasion by tightening the blood-brain barrier by Helen M. Lazear, Brian P. Daniels, Amelia K. Pinto, Albert C. Huang, Sarah C. Vick, Sean E. Doyle, Michael Gale, Robyn S. Klein, and Michael S. Diamond Sci Transl Med Volume 7(284):284ra59-284ra59 April 22, 2015 Copyright © 2015, American Association for the Advancement of Science

Fig. 1. IFN-λ produces cell type–restricted induction of ISGs Fig. 1. IFN-λ produces cell type–restricted induction of ISGs. (A to D) Expression of Ifnar1, Ifnlr1, and Il10rb was measured by qRT-PCR from uninfected mouse keratinocytes, DCs, macrophages, or cortical neurons. IFN-λ produces cell type–restricted induction of ISGs. (A to D) Expression of Ifnar1, Ifnlr1, and Il10rb was measured by qRT-PCR from uninfected mouse keratinocytes, DCs, macrophages, or cortical neurons. Gene expression was normalized to 18S ribosomal RNA (rRNA). Dotted lines indicate the sensitivity of the assay. WT, wild type. (E to G) Mouse keratinocytes and DCs were treated with murine IFN-λ3 or IFN-β for 6 hours. Expression of Ifit1, Rsad2, and Irf7 was measured by qRT-PCR. Gene expression was normalized to 18S rRNA and to mock-treated cells. Results represent means ± SEM of nine samples from three independent experiments. Dotted lines indicate gene expression in mock-treated cells. (H) Mouse keratinocytes were treated with IFN-λ3 for 6 hours, and expression of Ifit1 was measured by qRT-PCR. Gene expression was normalized to Gapdh. The dotted line represents gene expression in mock-treated cells. Results represent means ± SEM of 2 to 10 samples from three independent experiments. (I) Mouse DCs were treated with IFN-λ3 (10 ng/ml) or IFN-β (20 ng/ml) for 6 hours. Total RNA was analyzed by RNA-seq. Genes that were induced or repressed by more than threefold (relative to mock-treated) are shown in a heatmap representation. Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 2. IFN-λ does not directly inhibit WNV infection. IFN-λ does not directly inhibit WNV infection. (A to C) Mouse keratinocytes and DCs were pretreated with murine IFN-λ3 or IFN-β for 6 hours and then infected with WNV at a multiplicity of infection (MOI) of 0.1. Viral infection was measured by focus-forming assay and expressed as focus-forming units (FFU) per milliliter. (D to F) Primary cells prepared from WT or Ifnlr1−/− mice were infected with WNV. Results represent means ± SEM of nine samples from three independent experiments. Dotted lines indicate the sensitivity of the assay. Viral titers in IFN- treated cells were compared to mock-treated cells [two-way analysis of variance (ANOVA)]. (A) **P = 0.0057. (B) ***P = 0.0004, ****P < 0.0001. (C) **P = 0.0075, ****P < 0.0001. (D to F) The differences between WT and Ifnlr1−/− cells were not statistically significant (two-way ANOVA). Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 3. Viral burden in WT and Ifnlr1−/− mice. Viral burden in WT and Ifnlr1−/− mice. (A to I) Nine- to 12-week-old mice were infected with 102 plaque-forming units (PFU) of WNV via subcutaneous injection (A to F) or 101 PFU via intracranial injection (G to I). (A and B) Viral RNA was measured by qRT-PCR. (C to F) Viral titers were measured by plaque assay. Symbols represent individual mice from several independent experiments; bars indicate the mean of 5 to 15 mice per group. (G to I) Viral infection in CNS tissues was measured by plaque assay. Bars indicate the mean of five to six mice per group from two independent experiments. Dotted lines represent the limit of sensitivity of the assay. Viral titers in WT and Ifnlr1−/− mice were compared by the Mann-Whitney test (A to F) or t test (G to I). (E) *P = 0.0124, **P = 0.0045. (F) **P = 0.0031. Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 4. Cellular immune responses in WT and Ifnlr1−/− mice. Cellular immune responses in WT and Ifnlr1−/− mice. (A to T) Leukocytes were harvested from the spleen (A to J) and brain (K to T) 8 days after WNV infection. Cells were stained with antibodies against CD45, CD19, CD11b, CD11c, CD3, CD4, CD8, and granzyme B. Cells were either stained with a tetramer displaying the immunodominant WNV peptide (Db-NS4B) (E and O) or restimulated with NS4B peptide and then stained with antibodies against IFN-γ and TNF-α (G, H, Q, and R). Total numbers of the indicated cell populations are shown. IFN-γ and TNF-α production is expressed as geometric mean fluorescence intensity (GMFI). Symbols represent individual mice, and data are combined from two independent experiments. The differences between WT and Ifnlr1−/− mice were not significant (Mann-Whitney test). Representative flow cytometry plots showing CD8+ and NS4B+ cells (I and S) or CD8+ and IFN-γ+ cells (J and T). Numbers indicate the percentage of cells in each quadrant, and the results are representative of two independent experiments. Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 5. BBB permeability in infected WT and Ifnlr1−/− mice. BBB permeability in infected WT and Ifnlr1−/− mice. WT and Ifnlr1−/− mice were infected via a subcutaneous route with WNV or diluent (mock). (A to C) BBB permeability was assessed at 4 days after infection by measuring the accumulation of sodium fluorescein dye in CNS tissues after intraperitoneal administration. Symbols represent individual animals from two independent experiments. ****P < 0.0001 (t test). (D and E) Brain sections were stained to detect endogenous IgG leakage into the CNS parenchyma (shown in green); nuclei are shown in blue. Representative images were taken at ×40 magnification (scale bars, 100 μm). (E) IgG staining was quantified from two fields from three mice per group and compared by t test. Cortex: *P = 0.0263; cerebellum: *P = 0.0241. Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 6. IFN-λ increases TEER in BMECs Fig. 6. IFN-λ increases TEER in BMECs. (A and B) Expression of Ifnar1, Ifnlr1, and Il10rb was measured by qRT-PCR from WT uninfected BMECs and astrocytes. IFN-λ increases TEER in BMECs. (A and B) Expression of Ifnar1, Ifnlr1, and Il10rb was measured by qRT-PCR from WT uninfected BMECs and astrocytes. Gene expression was normalized to 18S rRNA. (C and D) BMECs and astrocytes prepared from WT and Ifnlr1−/− mice were infected with WNV, and viral replication was measured by focus-forming assay (expressed as focus-forming units per milliliter). Results represent means ± SEM of nine samples from three experiments. The differences between WT and Ifnlr1−/− cells were not significant (two-way ANOVA). (E to I) WT or Ifnlr1−/− BMECs were cultured on Transwell inserts with astrocytes prepared from WT (E, left; and F to I) or Ifnlr1−/− (E, right) mice. Results represent means ± SEM of nine samples from two experiments. (E) BMECs were infected with WNV, and TEER was measured 6 hours later. WNV-infected WT BMECs were compared to Ifnlr1−/− BMECs (t test). ****P < 0.0001, ***P = 0.0006. (F) BMECs were treated with murine IFN-β or IFN-λ3, and TEER was measured 6 hours later. WT BMECs were compared to Ifnlr1−/− BMECs (t test). IFN-β and IFN-λ (10 ng/ml): ****P < 0.0001. IFN-λ (100 ng/ml): ***P = 0.0003. (G) BMECs were pretreated with an IFNAR-blocking or isotype control monoclonal antibody (MAb) and then infected with WNV. TEER was measured 6 hours after infection. WT BMECs were compared to Ifnlr1−/− BMECs (t test). ****P < 0.0001. (H) WT BMECs were pretreated with cycloheximide (CHX) (20 μg/ml) for 18 hours and then infected with WNV or treated with murine IFN-β (10 ng/ml) or IFN-λ3 (100 ng/ml). TEER was measured 6 hours later. CHX-treated BMECs were compared to media-treated cells (t test). ****P < 0.0001, *P = 0.009. (I) BMECs were prepared from WT and Stat1−/− mice and treated with murine IFN-β or IFN-λ3, and TEER was measured 2, 6, and 12 hours after treatment. Results represent means ± SEM of six samples from two experiments. IFN-treated BMECs were compared to vehicle-treated cells of the same genotype at 2 hours after treatment (t test). IFN-β: ***P = 0.0005 (WT), ***P < 0.0001 (Stat1−/−). IFN-λ: *P = 0.0204 (WT), *P = 0.0347 (Stat1−/−). WT and Stat1−/− cells were compared by two-way ANOVA. IFN-β: *P = 0.0311. (J) HCMEC/D3 cells were cultured on Transwell inserts and treated with human IFN-β (10 ng/ml) or pegylated human IFN-λ1 (100 ng/ml), and TEER was measured. Results represent means ± SEM of eight samples from two experiments. IFN-treated cells were compared to vehicle-treated cells at 2 hours after treatment (t test). IFN-β: ****P < 0.0001. IFN-λ: **P = 0.0011. IFN-β– and IFN-λ–treated cells were compared by two-way ANOVA. ***P = 0.0006. (K and L) HCMEC/D3 cells were pretreated for 18 hours with LPS (100 ng/ml) or media as control, followed by pegylated human IFN-λ1 (100 ng/ml) for 6 hours (or media). The cells were then infected with WNV at an MOI of 0.01 from the upper chamber. TEER was measured over the course of the experiment (K); at 6 hours after infection, virus crossing into the lower chamber was measured by qRT-PCR (L). Results represent means ± SEM of 12 samples from three experiments. (K) IFN-λ treatment was compared to media or LPS treatment by two-way ANOVA (K) or t test (L). ****P < 0.0001, **P = 0.0047. Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 7. Cell junction protein localization in endothelial cells. Cell junction protein localization in endothelial cells. (A and B) WT BMECs were pretreated for 18 hours with LPS (100 ng/ml) and subsequently treated with murine IFN-λ3 (100 ng/ml) for 6 hours. (C) WT mice were treated with LPS (3 mg/kg via an intraperitoneal route), LPS and pegylated murine IFN-λ2 (25 μg via intravenous route), or phosphate-buffered saline (PBS) alone. (A to C) Cells and brain sections were costained for the cell junction proteins ZO-1 (green) and claudin-5 (red); nuclei are shown in blue. Images were taken by confocal microscopy at ×63 magnification (scale bars, 20 μm). Arrows indicate ZO-1 and claudin-5 colocalization at intact tight junctions. Results are representative of two independent experiments. (B) Colocalization of ZO-1 and claudin-5 staining was determined using ImageJ software and compared by t test. Media versus IFN-λ: **P = 0.0033. LPS versus LPS + IFN-λ: **P = 0.0014. Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science

Fig. 8. IFN-λ enhances BBB tightness and restricts WNV neuroinvasion. IFN-λ enhances BBB tightness and restricts WNV neuroinvasion. (A to C) Eight-week-old WT mice were treated with LPS, LPS and pegylated murine IFN-λ2 (25 μg via intravenous route), or PBS alone. BBB permeability was assessed 24 hours later by fluorescein or IgG permeation as described for Fig. 5. Symbols represent individual animals from two independent experiments. Values for LPS-treated mice were compared to mice receiving LPS + IFN-λ (t test). (A) Cortex: ****P < 0.0001, cerebellum: **P = 0.0096, spinal cord: **P = 0.0082. (C) Cortex: *P = 0.0348, cerebellum: *P = 0.0168. (D and E) Five-week-old WT mice were infected with 102 PFU of WNV via a subcutaneous route. On the day of infection and at days 2 and 4 afterward, 20 μg of pegylated murine IFN-λ2 protein (or PBS) was administered via an intravenous route. (D) Viral RNA in the plasma was measured on days 2 and 4 after infection. (E) Survival was monitored for 21 days after infection. n = 22 mice, *P = 0.0264 (log-rank test). (F and G) Nine-week-old WT mice were infected with 102 PFU of WNV via a subcutaneous route. At days 2, 3, and 4, 25 μg of pegylated murine IFN-λ2 protein (or PBS) was administered via an intravenous route. (F) Viral RNA in the plasma was measured on days 3, 4, and 5. (G) Viral burden in the CNS was measured by plaque assay at day 8. Symbols represent individual animals. Dotted lines represent the limit of sensitivity of the assay. ***P = 0.0009 (Mann-Whitney test). Helen M. Lazear et al., Sci Transl Med 2015;7:284ra59 Copyright © 2015, American Association for the Advancement of Science