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Zhang A, Gaffney RG, Merola JF. Treatment of recalcitrant lupus erythematosus tumidus with deucravacitinib. JAAD Case Rep 2024; 45:110-112. [PMID: 38439766 PMCID: PMC10909655 DOI: 10.1016/j.jdcr.2023.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024] Open
Affiliation(s)
- Arianna Zhang
- School of Medicine, Tufts University, Boston, Massachusetts
- Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Rebecca G. Gaffney
- Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Joseph F. Merola
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
- Division of Rheumatology, Department of Medicine, UT Southwestern Medical Center, Dallas, Texas
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2
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Abstract
Among various tyrosine kinases, a family of Janus kinases (JAK) has been elucidated as key players in signal transduction from vital cytokine receptors, such as interleukins and interferons. Indeed, recent rapid progress in JAK inhibitors in addition to biological agents provided therapeutic options for various diseases, including immune-mediated inflammatory diseases and hematological disorders. Efforts have culminated in the approval of nine JAK inhibitors in Japan in the recent decade. The safety profiles of JAK inhibitors seem to largely depend on patient populations and drug dosing, rather than on JAK selectivity. Thus, the comparison of various disease indications is pivotal for the understanding and proper use of JAK inhibitors.
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Affiliation(s)
- Hideto Kameda
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Toho University, Tokyo, Japan
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3
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Chen X, Wu Q, Cao X, Yang Y, Gong Z, Ren T, Du Q, Yuan Y, Zuo Y, Miao Y, He J, Qiao C, Zheng Z, Zhang T, Xu Y, Wu D, Wang Q, Huang L, Xie Z, Lv H, Wang J, Gong F, Liu Z, Wen C, Zheng H. Menthone inhibits type-I interferon signaling by promoting Tyk2 ubiquitination to relieve local inflammation of rheumatoid arthritis. Int Immunopharmacol 2022; 112:109228. [PMID: 36095947 DOI: 10.1016/j.intimp.2022.109228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/05/2022]
Abstract
Rheumatoid arthritis (RA) is an inflammatory autoimmune disease. RA development is mediated by the abnormal activation of multiple signaling pathways. Recent studies have revealed that type-I interferon (IFN-I) signaling plays an essential role in the occurrence and development of RA. However, how to target IFN-I signaling to develop anti-rheumatoid arthritis drugs remains largely unexplored. Here, our study showed that IFN-I signaling was over-activated in articular synovial cells from collagen II-induced arthritis (CIA) mice. Interestingly, we found that a small molecule compound, menthone, strongly inhibited the activation of the IFN-I signaling pathway. Further studies revealed that menthone promoted K48-linked polyubiquitination of Tyk2, thus lowering the protein level and stability of Tyk2. Importantly, menthone administration in the local articulus of CIA mice significantly attenuated the local inflammation in CIA mice. This study could promote our understanding of rheumatoid arthritis, and also suggests a potential strategy to develop anti-RA drugs.
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Affiliation(s)
- Xiangjie Chen
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Qiuyu Wu
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Xinhua Cao
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Yunshan Yang
- Medical College of Soochow University, Suzhou 215123, Jiangsu, China
| | - Zheng Gong
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Tengfei Ren
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Qian Du
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Yukang Yuan
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Yibo Zuo
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Ying Miao
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Jiuyi He
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Caixia Qiao
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Zhijin Zheng
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Tingting Zhang
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Yang Xu
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou 215123, Jiangsu, China
| | - Depei Wu
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou 215123, Jiangsu, China
| | - Qiao Wang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Lin Huang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Zhijun Xie
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Haitao Lv
- Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou 215123, Jiangsu, China
| | - Jun Wang
- Department of Intensive Care Medicine, the First Affiliated Hospital of Soochow University, Suzhou 215123, Jiangsu, China
| | - Fangyuan Gong
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China
| | - Zhichun Liu
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Soochow University, Suzhou 215123, Jiangsu, China
| | - Chengping Wen
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Hui Zheng
- Institutes of Biology and Medical Sciences, Jiangsu Key Laboratory of Infection and Immunity, Soochow University, Suzhou 215123, Jiangsu, China.
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Liu X, Sadaoka T, Krogmann T, Cohen JI. Epstein-Barr Virus (EBV) Tegument Protein BGLF2 Suppresses Type I Interferon Signaling To Promote EBV Reactivation. J Virol 2020; 94:e00258-20. [PMID: 32213613 DOI: 10.1128/JVI.00258-20] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/14/2020] [Indexed: 12/27/2022] Open
Abstract
Interferon alpha (IFN-α) and IFN-β are type I IFNs that are induced by virus infection and are important in the host's innate antiviral response. EBV infection activates multiple cell signaling pathways, resulting in the production of type I IFN which inhibits EBV infection and virus-induced B-cell transformation. We reported previously that EBV tegument protein BGLF2 activates p38 and enhances EBV reactivation. To further understand the role of BGLF2 in EBV infection, we used mass spectrometry to identify cellular proteins that interact with BGLF2. We found that BGLF2 binds to Tyk2 and confirmed this interaction by coimmunoprecipitation. BGLF2 blocked type I IFN-induced Tyk2, STAT1, and STAT3 phosphorylation and the expression of IFN-stimulated genes (ISGs) IRF1, IRF7, and MxA. In contrast, BGLF2 did not inhibit STAT1 phosphorylation induced by IFN-γ. Deletion of the carboxyl-terminal 66 amino acids of BGLF2 reduced the ability of the protein to repress type I IFN signaling. Treatment of gastric carcinoma and Raji cells with IFN-α blocked BZLF1 expression and EBV reactivation; however, expression of BGLF2 reduced the ability of IFN-α to inhibit BZLF1 expression and enhanced EBV reactivation. In summary, EBV BGLF2 interacts with Tyk2, inhibiting Tyk2, STAT1, and STAT3 phosphorylation and impairs type I IFN signaling; BGLF2 also counteracts the ability of IFN-α to suppress EBV reactivation.IMPORTANCE Type I interferons are important for controlling virus infection. We have found that the Epstein-Barr virus (EBV) BGLF2 tegument protein binds to a protein in the type I interferon signaling pathway Tyk2 and inhibits the expression of genes induced by type I interferons. Treatment of EBV-infected cells with type I interferon inhibits reactivation of the virus, while expression of EBV BGLF2 reduces the ability of type I interferon to inhibit virus reactivation. Thus, a tegument protein delivered to cells during virus infection inhibits the host's antiviral response and promotes virus reactivation of latently infected cells. Therefore, EBV BGLF2 might protect virus-infected cells from the type I interferon response in cells undergoing lytic virus replication.
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Hirashima K, Muromoto R, Minoguchi H, Matsumoto T, Kitai Y, Kashiwakura JI, Shimoda K, Oritani K, Matsuda T. The mechanism of Tyk2 deficiency-induced immunosuppression in mice involves robust IL-10 production in macrophages. Cytokine 2020; 130:155077. [PMID: 32208335 DOI: 10.1016/j.cyto.2020.155077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 03/18/2020] [Accepted: 03/18/2020] [Indexed: 01/12/2023]
Abstract
Macrophages are highly plastic in their pro-inflammatory/anti-inflammatory roles. Type I and II interferons (IFNs) are known to modulate macrophage activation. Tyrosine kinase 2 (Tyk2) has an intimate relationship with type I and II IFN signaling. Animal studies have shown that Tyk2 knock-out (KO) in mice is associated with reduced inflammatory responses in various mouse models of diseases. To investigate the role of Tyk2 in inflammation in more detail, we intraperitoneally injected heat-killed Propionibacterium acnes (P. acnes) to Tyk2 KO mice. P. acnes-induced acute peritoneal inflammation, assessed by neutrophil infiltration, was reduced in Tyk2 KO mice. The reduction was accompanied with diminished productions of inflammatory cytokines and an enhanced production of anti-inflammatory IL-10. Unexpectedly, pre-treatment of wild-type mice with the neutralizing antibodies for IFNs did not affect P. acnes-induced neutrophil infiltration. A neutralizing antibody for the IL-10 receptor in Tyk2 KO mice restored P. acnes-induced peritoneal inflammation. Enhanced production of IL-10 from Tyk2 KO peritoneal cells was suppressed by either the cyclooxygenase inhibitor diclofenac or protein kinase A inhibitor H-89. The level of prostaglandin E2 (PGE2) in the steady-state peritoneal cavity in Tyk2 KO mice was higher than that in wild-type mice. Tyk2 KO macrophages showed an enhanced CREB phosphorylation induced by P. acnes plus PGE2. Taken together, these results showed that Tyk2 deficiency potentiates the PGE2-protein kinase A-IL-10 pathway in macrophages, and thereby contributes to potentiation of the immunosuppressive phenotype.
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Affiliation(s)
- Koki Hirashima
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Ryuta Muromoto
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Hiroya Minoguchi
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tomohiro Matsumoto
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yuichi Kitai
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Jun-Ichi Kashiwakura
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Kazuya Shimoda
- Department of Internal Medicine II, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan
| | - Kenji Oritani
- Department of Hematology, International University of Health and Welfare, 4-3 Kouzunomori, Narita, Chiba 286-8686, Japan
| | - Tadashi Matsuda
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
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6
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Sasaki Y, Tokuhara H, Ohba Y, Okabe A, Nakayama M, Nakagawa H, Skene R, Hoffman I, Zou H, Yoshida M. Efficient synthesis of tert-butyl 3-cyano-3-cyclopropyl-2-oxopyrrolidine-4-carboxylates: Highly functionalized 2-pyrrolidinone enabling access to novel macrocyclic Tyk2 inhibitors. Bioorg Med Chem Lett 2020; 30:126963. [PMID: 31980341 DOI: 10.1016/j.bmcl.2020.126963] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 12/17/2022]
Abstract
Herein we report an efficient method for the synthesis of a highly functionalized 2-pyrrolidinone, tert-butyl 3-cyano-3-cyclopropyl-2-oxopyrrolidine-4-carboxylate, from readily available starting materials. Utility of this compound was demonstrated in the synthesis of a novel series of macrocyclic Tyk2 inhibitors, leading to the identification of a potent and selective macrocyclic Tyk2 inhibitor (26).
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Affiliation(s)
- Yusuke Sasaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan.
| | - Hidekazu Tokuhara
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan
| | - Yusuke Ohba
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan
| | - Atsutoshi Okabe
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan
| | - Masaharu Nakayama
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan
| | - Hideyuki Nakagawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan
| | - Robert Skene
- Takeda California, Inc., 10410 Science Center Drive, San Diego, CA 92121, United States
| | - Isaac Hoffman
- Takeda California, Inc., 10410 Science Center Drive, San Diego, CA 92121, United States
| | - Hua Zou
- Takeda California, Inc., 10410 Science Center Drive, San Diego, CA 92121, United States
| | - Masato Yoshida
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26‑1, Muraoka‑Higashi 2‑chome, Fujisawa, Kanagawa 251‑8555, Japan
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7
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Al-Shaikhly T, Ochs HD. Hyper IgE syndromes: clinical and molecular characteristics. Immunol Cell Biol 2018; 97:368-379. [PMID: 30264496 DOI: 10.1111/imcb.12209] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 09/20/2018] [Accepted: 09/24/2018] [Indexed: 01/18/2023]
Abstract
Hyper IgE syndromes comprise a group of rare primary immunodeficiency disorders characterized by a triad of atopic dermatitis, recurrent skin and lung infections along with elevated IgE levels. Job syndrome or autosomal dominant hyper IgE syndrome because of heterozygous loss-of-function mutations with dominant negative effect in signal transducer and activator of transcription-3 is the prototype of these disorders. However, several other genetically characterized immunodeficiency disorders have been identified over the past decade and joined the umbrella of hyper IgE syndromes including autosomal recessive mutations in the DOCK8, ZNF431 and PGM3 genes and heterozygous mutations with dominant negative effect in the CARD11 gene. Moreover, a number of phenotypically distinct immunodeficiency disorders can mimic hyper IgE syndromes, adding to the diagnostic challenge. Herein, we will concisely review these disorders, their molecular bases, highlighting key distinguishing clinical and laboratory findings and therapeutic options.
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Affiliation(s)
- Taha Al-Shaikhly
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Hans D Ochs
- Seattle Children's Research Institute, Seattle, Washington, USA.,Department of Pediatrics, University of Washington, Seattle, Washington, USA
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Chivero ET, Bhattarai N, McLinden JH, Xiang J, Stapleton JT. Human Pegivirus (HPgV; formerly known as GBV-C) inhibits IL-12 dependent natural killer cell function. Virology 2015; 485:116-27. [PMID: 26245365 DOI: 10.1016/j.virol.2015.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 07/02/2015] [Accepted: 07/13/2015] [Indexed: 02/06/2023]
Abstract
Human Pegivirus (HPgV, formally GB virus C) infects lymphocytes and NK cells in vivo, and infection is associated with reduced T cell and NK cell activation in HIV-infected individuals. The mechanism by which HPgV inhibits NK cell activation has not been assessed. Following IL-12 stimulation, IFNγ expression was lower in HIV-HPgV co-infected subjects compared to HIV mono-infected subjects (p=0.02). In addition, HPgV positive human sera, extracellular vesicles containing E2 protein, recombinant E2 protein and synthetic E2 peptides containing a predicted Tyk2 interacting motif inhibited NK cell IL-12-mediated IFNγ release. E2 protein also inhibited Tyk2 activation following IL-12 stimulation. In contrast, cytolytic NK cell function was not altered by HPgV. Inhibition of NK cell-induced proinflammatory/antiviral cytokines may contribute to both HPgV persistence and reduced immune activation during HIV-coinfection. Understanding mechanisms by which HPgV alters immune activation may contribute towards novel immunomodulatory therapies to treat HIV and inflammatory diseases.
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Affiliation(s)
- Ernest T Chivero
- The Iowa City Veterans Affairs Medical Center The University of Iowa, Iowa City, IA 52242, USA; Interdisciplinary program in Molecular and Cellular Biology, The University of Iowa, Iowa City, IA 52242, USA
| | - Nirjal Bhattarai
- The Iowa City Veterans Affairs Medical Center The University of Iowa, Iowa City, IA 52242, USA; Department of Internal Medicine, The University of Iowa, Iowa City, IA 52242, USA
| | - James H McLinden
- The Iowa City Veterans Affairs Medical Center The University of Iowa, Iowa City, IA 52242, USA; Department of Internal Medicine, The University of Iowa, Iowa City, IA 52242, USA
| | - Jinhua Xiang
- The Iowa City Veterans Affairs Medical Center The University of Iowa, Iowa City, IA 52242, USA; Department of Internal Medicine, The University of Iowa, Iowa City, IA 52242, USA
| | - Jack T Stapleton
- The Iowa City Veterans Affairs Medical Center The University of Iowa, Iowa City, IA 52242, USA; Interdisciplinary program in Molecular and Cellular Biology, The University of Iowa, Iowa City, IA 52242, USA; Department of Internal Medicine, The University of Iowa, Iowa City, IA 52242, USA; Department of Microbiology, The University of Iowa, Iowa City, IA 52242, USA.
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Ishizaki M, Muromoto R, Akimoto T, Sekine Y, Kon S, Diwan M, Maeda H, Togi S, Shimoda K, Oritani K, Matsuda T. Tyk2 is a therapeutic target for psoriasis-like skin inflammation. Int Immunol 2014; 26:257-67. [PMID: 24345760 DOI: 10.1093/intimm/dxt062] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Tyrosine kinase 2 (Tyk2), a member of the Jak kinase family, mediates signals triggered by various cytokines, which are related to the pathogenesis of psoriasis. In this study, we investigated the role of Tyk2 in IL-23-induced psoriasis-like skin inflammation. Tyk2(-/-) mice when injected with IL-23 showed significantly reduced ear skin swelling with epidermal hyperplasia and inflammatory cell infiltration compared with wild-type mice. In addition, Tyk2 deficiency reduced production of pro-inflammatory cytokines and psoriasis-relevant anti-microbial peptides. More noteworthy is that Tyk2 directly regulated IL-22-dependent inflammation and epidermal hyperplasia. Taken together with the inhibition of IL-23-induced inflammation by treatment with neutralizing antibodies against IL-17 or IL-22, Tyk2 participates in both IL-23 and IL-22 signal transduction to mediate psoriasis-like skin inflammation. On the basis of these findings, we demonstrated for the first time that a small-molecule Tyk2 inhibitor significantly inhibited IL-23-induced inflammation and cytokine production in the skin. These observations demonstrate the important role of Tyk2 in experimental skin inflammation and indicate the therapeutic potential of Tyk2 inhibition in human psoriasis.
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Affiliation(s)
- Masayuki Ishizaki
- Department of Immunology, Graduate School of Pharmaceutical Sciences Hokkaido University, Sapporo 060-0812, Japan
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Sobhkhez M, Hansen T, Iliev DB, Skjesol A, Jørgensen JB. The Atlantic salmon protein tyrosine kinase Tyk2: molecular cloning, modulation of expression and function. Dev Comp Immunol 2013; 41:553-563. [PMID: 23872231 DOI: 10.1016/j.dci.2013.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 07/09/2013] [Accepted: 07/11/2013] [Indexed: 06/02/2023]
Abstract
Tyk2, a member of the Janus Kinase (JAK) family of protein tyrosine kinases, is required for interferon-α/β binding and signaling in higher vertebrates. Currently, little is known about the role of the different JAKs in signaling responses to interferon (IFN) in lower vertebrates including fish. In this paper we report the identification and characterization of Atlantic salmon (Salmo salar) Tyk2. Four cDNA sequences, two containing an open reading frame encoding full-length Tyk protein and two with an up-stream in frame stop codon, were identified. The deduced amino acid sequences of the salmon full-length Tyk2 proteins showed highest identity with Tyk2 from other species and their transcripts were ubiquitously expressed. Like in mammals the presented data suggests that salmon Tyk2 is auto-phosporylated when ectopically expressed in cells. In our experiments, full-length salmon Tyk2 overexpressed in CHSE-cells phosphorylated itself, while both a kinase-deficient mutant and the truncated Tyk2 (Tyk-short) were inactive. Interestingly, the overexpression of full length Tyk2 was shown to up-regulate the transcript levels of the IFN induced gene Mx, thus indicating the involvement of salmon Tyk2 in the salmon IFN I pathway.
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Affiliation(s)
- Mehrdad Sobhkhez
- Norwegian College of Fisheries Science, University of Tromsø, N-9037 Tromsø, Norway
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Futosi K, Fodor S, Mócsai A. Reprint of Neutrophil cell surface receptors and their intracellular signal transduction pathways. Int Immunopharmacol 2013; 17:1185-97. [PMID: 24263067 DOI: 10.1016/j.intimp.2013.11.010] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 12/07/2012] [Accepted: 06/09/2013] [Indexed: 12/13/2022]
Abstract
Neutrophils play a critical role in the host defense against bacterial and fungal infections, but their inappropriate activation also contributes to tissue damage during autoimmune and inflammatory diseases. Neutrophils express a large number of cell surface receptors for the recognition of pathogen invasion and the inflammatory environment. Those include G-protein-coupled chemokine and chemoattractant receptors, Fc-receptors, adhesion receptors such as selectins/selectin ligands and integrins, various cytokine receptors, as well as innate immune receptors such as Toll-like receptors and C-type lectins. The various cell surface receptors trigger very diverse signal transduction pathways including activation of heterotrimeric and monomeric G-proteins, receptor-induced and store-operated Ca(2+) signals, protein and lipid kinases, adapter proteins and cytoskeletal rearrangement. Here we provide an overview of the receptors involved in neutrophil activation and the intracellular signal transduction processes they trigger. This knowledge is crucial for understanding how neutrophils participate in antimicrobial host defense and inflammatory tissue damage and may also point to possible future targets of the pharmacological therapy of neutrophil-mediated autoimmune or inflammatory diseases.
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Affiliation(s)
- Krisztina Futosi
- Department of Physiology, Semmelweis University School of Medicine, 1094 Budapest, Hungary
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Futosi K, Fodor S, Mócsai A. Neutrophil cell surface receptors and their intracellular signal transduction pathways. Int Immunopharmacol 2013; 17:638-50. [PMID: 23994464 PMCID: PMC3827506 DOI: 10.1016/j.intimp.2013.06.034] [Citation(s) in RCA: 414] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 12/07/2012] [Accepted: 06/09/2013] [Indexed: 12/29/2022]
Abstract
Neutrophils play a critical role in the host defense against bacterial and fungal infections, but their inappropriate activation also contributes to tissue damage during autoimmune and inflammatory diseases. Neutrophils express a large number of cell surface receptors for the recognition of pathogen invasion and the inflammatory environment. Those include G-protein-coupled chemokine and chemoattractant receptors, Fc-receptors, adhesion receptors such as selectins/selectin ligands and integrins, various cytokine receptors, as well as innate immune receptors such as Toll-like receptors and C-type lectins. The various cell surface receptors trigger very diverse signal transduction pathways including activation of heterotrimeric and monomeric G-proteins, receptor-induced and store-operated Ca2 + signals, protein and lipid kinases, adapter proteins and cytoskeletal rearrangement. Here we provide an overview of the receptors involved in neutrophil activation and the intracellular signal transduction processes they trigger. This knowledge is crucial for understanding how neutrophils participate in antimicrobial host defense and inflammatory tissue damage and may also point to possible future targets of the pharmacological therapy of neutrophil-mediated autoimmune or inflammatory diseases. Neutrophils are crucial players in innate and adaptive immunity. Neutrophils also participate in autoimmune and inflammatory diseases. Various neutrophil receptors recognize pathogens and the inflammatory environment. The various cell surface receptors trigger diverse intracellular signaling. Neutrophil receptors and signaling are potential targets in inflammatory diseases.
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Affiliation(s)
- Krisztina Futosi
- Department of Physiology, Semmelweis University School of Medicine, 1094 Budapest, Hungary
| | - Szabina Fodor
- Department of Computer Science, Corvinus University of Budapest, 1093 Budapest, Hungary
| | - Attila Mócsai
- Department of Physiology, Semmelweis University School of Medicine, 1094 Budapest, Hungary
- Corresponding author at: Department of Physiology, Semmelweis University School of Medicine, Tűzoltó utca 37–47, 1094 Budapest, Hungary. Tel.: + 36 1 459 1500x60 409; fax: + 36 1 266 7480.
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Pan D, Das A, Lala W, Kenway-Lynch CS, Liu DX, Veazey RS, Pahar B. Interleukin-10 prevents epithelial cell apoptosis by regulating IFNγ and TNFα expression in rhesus macaque colon explants. Cytokine 2013; 64:30-4. [PMID: 23867612 DOI: 10.1016/j.cyto.2013.06.312] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 05/09/2013] [Accepted: 06/16/2013] [Indexed: 11/18/2022]
Abstract
Interleukin-10 (IL-10) is an important immunomodulatory cytokine that plays an obligate role in regulating inflammatory responses. Here we demonstrated the role of IL-10 in regulating crypts length and breadth as well as maintaining the survival of epithelial cells using rhesus colon explant cultures. Anti-IL-10 antibody treatment of colon explant cultures induced increased production of inflammatory cytokines/molecules like IFNγ, TNFα, CD107a and perforin as well as increased epithelial cell apoptosis compared to media controls tested. Our results suggest that IL-10 plays a crucial role in maintaining mucosal homeostasis by regulating mucosal IFNγ and TNFα cytokine production.
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Affiliation(s)
- Diganta Pan
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA, USA
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Richard AJ, Stephens JM. The role of JAK-STAT signaling in adipose tissue function. Biochim Biophys Acta Mol Basis Dis 2014; 1842:431-9. [PMID: 23735217 DOI: 10.1016/j.bbadis.2013.05.030] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 05/20/2013] [Accepted: 05/22/2013] [Indexed: 01/14/2023]
Abstract
Adipocytes play important roles in lipid storage, energy homeostasis and whole body insulin sensitivity. The JAK-STAT (Janus Kinase-Signal Transducer and Activator of Transcription) pathway mediates a variety of physiological processes including development, hematopoiesis, and inflammation. Although the JAK-STAT signaling pathway occurs in all cells, this pathway can mediate cell specific responses. Studies in the last two decades have identified hormones and cytokines that activate the JAK-STAT signaling pathway. These cytokines and hormones have profound effects on adipocytes. The content of this review will introduce the types of adipocytes and immune cells that make up adipose tissue, the impact of obesity on adipose cellular composition and function, and the general constituents of the JAK-STAT pathway and how its activators regulate adipose tissue development and physiology. A summary of the identification of STAT target genes in adipocytes reveals how these transcription factors impact various areas of adipocyte metabolism including insulin action, modulation of lipid stores, and glucose homeostasis. Lastly, we will evaluate exciting new data linking the JAK-STAT pathway and brown adipose tissue and consider the future outlook in this area of investigation. This article is part of a Special Issue entitled: Modulation of Adipose Tissue in Health and Disease.
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