1
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Potter SJ, Zhang L, Kotliar M, Wu Y, Schafer C, Stefan K, Boukas L, Qu’d D, Bodamer O, Simpson BN, Barski A, Lindsley AW, Bjornsson HT. KMT2D regulates activation, localization, and integrin expression by T-cells. Front Immunol 2024; 15:1341745. [PMID: 38765012 PMCID: PMC11099208 DOI: 10.3389/fimmu.2024.1341745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 03/26/2024] [Indexed: 05/21/2024] Open
Abstract
Individuals with Kabuki syndrome present with immunodeficiency; however, how pathogenic variants in the gene encoding the histone-modifying enzyme lysine methyltransferase 2D (KMT2D) lead to immune alterations remain poorly understood. Following up on our prior report of KMT2D-altered integrin expression in B-cells, we performed targeted analyses of KMT2D's influence on integrin expression in T-cells throughout development (thymocytes through peripheral T-cells) in murine cells with constitutive- and conditional-targeted Kmt2d deletion. Using high-throughput RNA-sequencing and flow cytometry, we reveal decreased expression (both at the transcriptional and translational levels) of a cluster of leukocyte-specific integrins, which perturb aspects of T-cell activation, maturation, adhesion/localization, and effector function. H3K4me3 ChIP-PCR suggests that these evolutionary similar integrins are under direct control of KMT2D. KMT2D loss also alters multiple downstream programming/signaling pathways, including integrin-based localization, which can influence T-cell populations. We further demonstrated that KMT2D deficiency is associated with the accumulation of murine CD8+ single-positive (SP) thymocytes and shifts in both human and murine peripheral T-cell populations, including the reduction of the CD4+ recent thymic emigrant (RTE) population. Together, these data show that the targeted loss of Kmt2d in the T-cell lineage recapitulates several distinct features of Kabuki syndrome-associated immune deficiency and implicates epigenetic mechanisms in the regulation of integrin signaling.
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Affiliation(s)
- Sarah J. Potter
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Li Zhang
- McKusick-Nathans Department of Genetics, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Michael Kotliar
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Yuehong Wu
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Caitlin Schafer
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Kurtis Stefan
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Leandros Boukas
- McKusick-Nathans Department of Genetics, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Dima Qu’d
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Olaf Bodamer
- Division of Genetics and Genomics, Boston Children’s Hospital, Boston, MA, United States
- The Roya Kabuki Program, Boston Children’s Hospital, Boston, MA, United States
- Division of Genetics and Genomics, Broad Institute of MIT and Harvard University, Cambridge, MA, United States
| | - Brittany N. Simpson
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Artem Barski
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Andrew W. Lindsley
- Division of Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Hans T. Bjornsson
- McKusick-Nathans Department of Genetics, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Faculty of Medicine, The University of Iceland, Reykjavik, Iceland
- Department of Genetics and Molecular Medicine, Landspitali University Hospital, Reykjavik, Iceland
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2
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WASP and Mst1 coregulate B-cell development and B-cell receptor signaling. Blood Adv 2021; 4:573-585. [PMID: 32045478 DOI: 10.1182/bloodadvances.2018027870] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 12/11/2019] [Indexed: 12/25/2022] Open
Abstract
Mst1 is a serine/threonine kinase involved in cell survival, proliferation, apoptosis, and tumorigenesis. In mice, Mst1 regulates actin dynamics required for T-cell adhesion and migration, which correlate with thymic egress and entry into lymphatic tissue. The role of Mst1 in B cells and how it may control actin-dependent processes has not been well characterized. Wiskott-Aldrich syndrome protein (WASP) deficiency only moderately affects development and B-cell receptor (BCR) signaling, suggesting WASP likely associates with other molecules. We investigated whether Mst1 associates with WASP to regulate B-cell development and activation. Experimenting on Mst1/WASP double knockout (DKO) mice, we found a severe defect in the bone marrow B-cell development, and BCR signaling in the DKO mice was severely reduced. Even though WASP or Mst1 could influence the early B-cell activation, we found that the early activation events such as B-cell spreading, BCR clustering, and BCR signaling were much more impaired in the B cells from DKO mice. Furthermore, reciprocal regulation between Mst1 and WASP was observed in WASP and Mst1 KO mice, whereby the localization and function of phosphorylated WASP were affected in Mst1 KO mice. Most importantly, Mst1 inhibits the expression of WASP by decreasing the expression of WASP-interacting protein. Interestingly, we also found that WASP deficiency in patients and mice interferes with phosphorylated Mst1 localization and therefore function in B cells. Overall, our study provides a partner for WASP to regulate B-cell development and BCR signaling, as well as the reciprocal regulating molecular mechanism of one another.
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3
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Hills LB, Abdullah L, Lust HE, Degefu H, Huang YH. Foxo1 Serine 209 Is a Critical Regulatory Site of CD8 T Cell Differentiation and Survival. THE JOURNAL OF IMMUNOLOGY 2020; 206:89-100. [PMID: 33229443 DOI: 10.4049/jimmunol.2000216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 10/26/2020] [Indexed: 11/19/2022]
Abstract
Foxo1 is an essential transcription factor required for the survival and differentiation of memory CD8 T cells, yet it is unclear whether these Foxo1-dependent functions are inherently coupled. To address this question, we examined the effects of different Foxo1 posttranslational modifications. Phosphorylation of Foxo1 by Akt kinases at three distinct residues is well characterized to inhibit Foxo1 transcriptional activity. However, the effect of Foxo1 phosphorylation within its DNA-binding domain at serine 209 by Mst1 kinase is not fully understood. In this study, we show that an S209A phospho-null Foxo1 exhibited Akt-dependent nuclear trafficking in mouse CD8 T cells and augmented the expression of canonical Foxo1 target genes such as Il7r and Sell In contrast, an S209D phosphomimetic Foxo1 (SD-Foxo1) was largely excluded from the nucleus of CD8 T cells and failed to transactivate these genes. RNA sequencing analysis revealed that SD-Foxo1 was associated with a distinct Foxo1-dependent transcriptional profile, including genes mediating CD8 effector function and cell survival. Despite defective transactivation of canonical target genes, SD-Foxo1 promoted IL-15-mediated CD8 T cell survival in vitro and survival of short-lived effector cells in vivo in response to Listeria monocytogenes infection. However, SD-Foxo1 actively repressed CD127 expression and failed to generate memory precursors and long-lived memory T cells. Together, these data indicate that S209 is a critical residue for the regulation of Foxo1 subcellular localization and for balancing CD8 T cell differentiation and survival.
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Affiliation(s)
- Leonard Benjamin Hills
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756; and
| | - Leena Abdullah
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756; and
| | - Hannah E Lust
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756; and
| | - Hanna Degefu
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756; and
| | - Yina H Huang
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756; and .,Department of Pathology and Laboratory Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756
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4
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Jørgensen SE, Al-Mousawi A, Assing K, Hartling U, Grosen D, Fisker N, Nielsen C, Jakobsen MA, Mogensen TH. STK4 Deficiency Impairs Innate Immunity and Interferon Production Through Negative Regulation of TBK1-IRF3 Signaling. J Clin Immunol 2020; 41:109-124. [PMID: 33078349 DOI: 10.1007/s10875-020-00891-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/07/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND STK4 deficiency due to homozygous mutations in the STK4 gene encoding the STK4/MST1 kinase was first described in 2012. STK4/MST1 kinase regulates cell proliferation, survival, differentiation, and immune responses through canonical and non-canonical Hippo signaling pathways. OBJECTIVE We describe an 11-year-old girl with a clinical presentation consisting of severe recurrent herpes zoster, chronic warts, and recurrent pneumonias, as well as a somatic phenotype with hypothyroidism and low stature. Whole exome sequencing revealed STK4 deficiency due to homozygosity for a novel frameshift variant in STK4, c.523dupA, p.(L174fsTer45), resulting in a premature stop codon within the kinase domain. METHODS We performed a thorough investigation of the genetics and innate and adaptive immunological abnormalities in STK4 deficiency. RESULTS We show significantly impaired type I, II, and III interferon (IFN) responses and partly reduced proinflammatory cytokine responses to ligands of Toll-like receptor (TLR)3, TLR9, and the cytosolic RNA and DNA sensors as well as to microorganisms. Impaired IFN responses could be attributed to reduced phosphorylation of TBK1 and IRF3. Moreover, virus infection induced enhanced cell death by apoptosis. Importantly, autophagy pathways were slightly disturbed, with enhanced LC3B-Ito LCB3-II conversion at the single cell level but normal overall formation of LCB3 punctae. Finally, the patient displayed some indicators of impaired adaptive immunity in the form of insufficient vaccination responses, T cell lymphopenia, and reduced Treg fractions, although with largely normal T cell proliferation and normal IFNg production. CONCLUSION Here, we demonstrate disturbances in various immune cell populations and pathways involved in innate immune responses, cell death, autophagy, and adaptive immunity in a patient homozygous for a novel STK4 frameshift mutation.
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Affiliation(s)
- Sofie E Jørgensen
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Ali Al-Mousawi
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Kristian Assing
- Department of Clinical Immunology, Odense University Hospital, Odense, Denmark
| | - Ulla Hartling
- Department of Pediatrics, Odense University Hospital, Odense, Denmark
| | - Dorthe Grosen
- Department of Pediatrics, Odense University Hospital, Odense, Denmark
| | - Niels Fisker
- Department of Pediatrics, Odense University Hospital, Odense, Denmark
| | - Christian Nielsen
- Department of Clinical Immunology, Odense University Hospital, Odense, Denmark
| | - Marianne A Jakobsen
- Department of Clinical Immunology, Odense University Hospital, Odense, Denmark
| | - Trine H Mogensen
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark. .,Department of Biomedicine, Aarhus University, Aarhus, Denmark. .,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
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5
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Bouchard A, Witalis M, Chang J, Panneton V, Li J, Bouklouch Y, Suh WK. Hippo Signal Transduction Mechanisms in T Cell Immunity. Immune Netw 2020; 20:e36. [PMID: 33163244 PMCID: PMC7609160 DOI: 10.4110/in.2020.20.e36] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 12/25/2022] Open
Abstract
Hippo signaling pathways are evolutionarily conserved signal transduction mechanisms mainly involved in organ size control, tissue regeneration, and tumor suppression. However, in mammals, the primary role of Hippo signaling seems to be regulation of immunity. As such, humans with null mutations in STK4 (mammalian homologue of Drosophila Hippo; also known as MST1) suffer from recurrent infections and autoimmune symptoms. Although dysregulated T cell homeostasis and functions have been identified in MST1-deficient human patients and mouse models, detailed cellular and molecular bases of the immune dysfunction remain to be elucidated. Although the canonical Hippo signaling pathway involves transcriptional co-activator Yes-associated protein (YAP) or transcriptional coactivator with PDZ motif (TAZ), the major Hippo downstream signaling pathways in T cells are YAP/TAZ-independent and they widely differ between T cell subsets. Here we will review Hippo signaling mechanisms in T cell immunity and describe their implications for immune defects found in MST1-deficient patients and animals. Further, we propose that mutual inhibition of Mst and Akt kinases and their opposing roles on the stability and function of forkhead box O and β-catenin may explain various immune defects discovered in mutant mice lacking Hippo signaling components. Understanding these diverse Hippo signaling pathways and their interplay with other evolutionarily-conserved signaling components in T cells may uncover molecular targets relevant to vaccination, autoimmune diseases, and cancer immunotherapies.
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Affiliation(s)
- Antoine Bouchard
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada.,Molecular Biology Program, Department of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Mariko Witalis
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada.,Molecular Biology Program, Department of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Jinsam Chang
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada.,Molecular Biology Program, Department of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Vincent Panneton
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Joanna Li
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada.,Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G4, Canada
| | - Yasser Bouklouch
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada
| | - Woong-Kyung Suh
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, QC H2W 1R7, Canada.,Molecular Biology Program, Department of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, Montreal, QC H3T 1J4, Canada.,Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G4, Canada
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6
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Ueda Y, Kondo N, Kinashi T. MST1/2 Balance Immune Activation and Tolerance by Orchestrating Adhesion, Transcription, and Organelle Dynamics in Lymphocytes. Front Immunol 2020; 11:733. [PMID: 32435241 PMCID: PMC7218056 DOI: 10.3389/fimmu.2020.00733] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 03/31/2020] [Indexed: 01/15/2023] Open
Abstract
The STE20-like serine/threonine kinases MST1 and MST2 (MST1/2) are mammalian homologs of Hippo in flies. MST1/2 regulate organ size by suppressing the transcription factor YAP, which promotes proliferation. MST1 is predominantly expressed in immune cells, where it plays distinct roles. Here, we review the functions of MST1/2 in immune cells, uncovered by a series of recent studies, and discuss the connection between MST1/2 function and immune responses. MST1/2 regulate lymphocyte development, trafficking, survival, and antigen recognition by naive T cells. MST1/2 also regulate the function of regulatory T cells and effector T cell differentiation, thus acting to balance immune activation and tolerance. Interestingly, MST1/2 elicit these functions not by the “canonical” Hippo pathway, but by the non-canonical Hippo pathway or alternative pathways. In these pathways, MST1/2 regulates cellular processes relating to immune response, such as chemotaxis, cell adhesion, immunological synapse, gene transcriptions. Recent advances in our understanding of the molecular mechanisms of these processes have revealed important roles of MST1/2 in regulating cytoskeleton remodeling, integrin activation, and vesicular transport in lymphocytes. We discuss the significance of the MST1/2 signaling in lymphocytes in the regulation of organelle dynamics.
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Affiliation(s)
- Yoshihiro Ueda
- Department of Molecular Genetics, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Naoyuki Kondo
- Department of Molecular Genetics, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
| | - Tatsuo Kinashi
- Department of Molecular Genetics, Institute of Biomedical Science, Kansai Medical University, Hirakata, Japan
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7
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Ye X, Ong N, An H, Zheng Y. The Emerging Roles of NDR1/2 in Infection and Inflammation. Front Immunol 2020; 11:534. [PMID: 32265942 PMCID: PMC7105721 DOI: 10.3389/fimmu.2020.00534] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/09/2020] [Indexed: 12/28/2022] Open
Abstract
The nuclear Dbf2-related (NDR) kinases NDR1 and NDR2 belong to the NDR/LATS (large tumor suppressor) subfamily in the Hippo signaling pathway. They are highly conserved from yeast to humans. It is well-known that NDR1/2 control important cellular processes, such as morphological changes, centrosome duplication, cell proliferation, and apoptosis. Recent studies revealed that NDR1/2 also play important roles in the regulation of infection and inflammation. In this review, we summarized the roles of NDR1/2 in the modulation of inflammation induced by cytokines and innate immune response against the infection of bacteria and viruses, emphasizing on how NDR1/2 regulate signaling transduction through Hippo pathway-dependent and -independent manners.
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Affiliation(s)
- Xiaolan Ye
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Naomi Ong
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huazhang An
- Center for Translational Medicine, Clinical Cancer Institute, Second Military Medical University, Shanghai, China
| | - Yuejuan Zheng
- Center for Traditional Chinese Medicine and Immunology Research, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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8
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Bednarczyk M, Stege H, Grabbe S, Bros M. β2 Integrins-Multi-Functional Leukocyte Receptors in Health and Disease. Int J Mol Sci 2020; 21:E1402. [PMID: 32092981 PMCID: PMC7073085 DOI: 10.3390/ijms21041402] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 12/25/2022] Open
Abstract
β2 integrins are heterodimeric surface receptors composed of a variable α (CD11a-CD11d) and a constant β (CD18) subunit and are specifically expressed by leukocytes. The α subunit defines the individual functional properties of the corresponding β2 integrin, but all β2 integrins show functional overlap. They mediate adhesion to other cells and to components of the extracellular matrix (ECM), orchestrate uptake of extracellular material like complement-opsonized pathogens, control cytoskeletal organization, and modulate cell signaling. This review aims to delineate the tremendous role of β2 integrins for immune functions as exemplified by the phenotype of LAD-I (leukocyte adhesion deficiency 1) patients that suffer from strong recurrent infections. These immune defects have been largely attributed to impaired migratory and phagocytic properties of polymorphonuclear granulocytes. The molecular base for this inherited disease is a functional impairment of β2 integrins due to mutations within the CD18 gene. LAD-I patients are also predisposed for autoimmune diseases. In agreement, polymorphisms within the CD11b gene have been associated with autoimmunity. Consequently, β2 integrins have received growing interest as targets in the treatment of autoimmune diseases. Moreover, β2 integrin activity on leukocytes has been implicated in tumor development.
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Affiliation(s)
| | | | | | - Matthias Bros
- Department of Dermatology, University Medical Center Mainz, Langenbeckstraße 1, 55131 Mainz, Germany; (M.B.); (H.S.); (S.G.)
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9
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White SM, Murakami S, Yi C. The complex entanglement of Hippo-Yap/Taz signaling in tumor immunity. Oncogene 2019; 38:2899-2909. [PMID: 30617303 PMCID: PMC7567008 DOI: 10.1038/s41388-018-0649-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 10/23/2018] [Indexed: 12/18/2022]
Abstract
The Hippo-Yap/Taz pathway, originally identified as a central developmental regulator of organ size, has been found perturbed in many types of human tumors, and linked to tumor growth, survival, evasion, metastasis, stemness, and drug resistance. Beside these tumor-cell-intrinsic functions, Hippo signaling also plays important immune-regulatory roles. In this review, we will summarize and discuss recent breakthroughs in our understanding of how various components of the Hippo-Yap/Taz pathway influence the tumor immune microenvironment, including their effects on the tumor secretome and immune infiltrates, their roles in regulating crosstalk between tumor cells and T cells, and finally their intrinsic functions in various types of innate and adaptive immune cells. While further research is needed to integrate and reconcile existing findings and to discern the overall effects of Hippo signaling on tumor immunity, it is clear that Hippo signaling functions as a key bridge connecting tumor cells with both the adaptive and innate immune systems. Thus, all future therapeutic development against the Hippo-Yap/Taz pathway should take into account their multi-faceted roles in regulating tumor immunity in addition to their growth-regulatory functions. Given that immune therapies have become the mainstay of cancer treatment, it is also important to pursue how to manipulate Hippo signaling to boost response or overcome resistance to existing immune therapies.
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Affiliation(s)
- Shannon M White
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Shigekazu Murakami
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Chunling Yi
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA.
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10
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Tangye SG, Bucciol G, Casas‐Martin J, Pillay B, Ma CS, Moens L, Meyts I. Human inborn errors of the actin cytoskeleton affecting immunity: way beyond WAS and WIP. Immunol Cell Biol 2019; 97:389-402. [DOI: 10.1111/imcb.12243] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 02/09/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Stuart G Tangye
- Immunology Division Garvan Institute of Medical Research Sydney NSW Australia
- Faculty of Medicine St Vincent's Clinical School UNSW Sydney Sydney NSW Australia
| | - Giorgia Bucciol
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
- Department of Pediatrics University Hospitals Leuven Leuven Belgium
| | - Jose Casas‐Martin
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - Bethany Pillay
- Immunology Division Garvan Institute of Medical Research Sydney NSW Australia
- Faculty of Medicine St Vincent's Clinical School UNSW Sydney Sydney NSW Australia
| | - Cindy S Ma
- Immunology Division Garvan Institute of Medical Research Sydney NSW Australia
- Faculty of Medicine St Vincent's Clinical School UNSW Sydney Sydney NSW Australia
| | - Leen Moens
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - Isabelle Meyts
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
- Department of Pediatrics University Hospitals Leuven Leuven Belgium
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11
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Kurz ARM, Catz SD, Sperandio M. Noncanonical Hippo Signalling in the Regulation of Leukocyte Function. Trends Immunol 2018; 39:656-669. [PMID: 29954663 DOI: 10.1016/j.it.2018.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 05/03/2018] [Accepted: 05/28/2018] [Indexed: 01/06/2023]
Abstract
The mammalian sterile 20-like (MST) kinases are central constituents of the evolutionary ancient canonical Hippo pathway regulating cell proliferation and survival. However, perhaps surprisingly, MST1 deficiency in human patients leads to a severe combined immunodeficiency syndrome with features of autoimmune disease. In line with this, Mst1-deficient mice exhibit severe defects in lymphocyte and neutrophil functions as well as disturbed intracellular vesicle transport. These findings spurred research on the noncanonical functions of MST1 in leukocytes. Here, we summarise the latest findings on this topic and discuss MST1 as a critical regulator of various leukocyte functions.
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Affiliation(s)
- Angela R M Kurz
- Walter Brendel Center of Experimental Medicine, BMC, Klinikum der Universität, LMU Munich, Germany; The Centenary Institute, Camperdown, New South Wales, Australia
| | - Sergio D Catz
- The Scripps Research Institute, La Jolla, California, USA
| | - Markus Sperandio
- Walter Brendel Center of Experimental Medicine, BMC, Klinikum der Universität, LMU Munich, Germany; DZHK Munich, Germany.
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12
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Taha Z, Janse van Rensburg HJ, Yang X. The Hippo Pathway: Immunity and Cancer. Cancers (Basel) 2018; 10:cancers10040094. [PMID: 29597279 PMCID: PMC5923349 DOI: 10.3390/cancers10040094] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 12/21/2022] Open
Abstract
Since its discovery, the Hippo pathway has emerged as a central signaling network in mammalian cells. Canonical signaling through the Hippo pathway core components (MST1/2, LATS1/2, YAP and TAZ) is important for development and tissue homeostasis while aberrant signaling through the Hippo pathway has been implicated in multiple pathologies, including cancer. Recent studies have uncovered new roles for the Hippo pathway in immunology. In this review, we summarize the mechanisms by which Hippo signaling in pathogen-infected or neoplastic cells affects the activities of immune cells that respond to these threats. We further discuss how Hippo signaling functions as part of an immune response. Finally, we review how immune cell-intrinsic Hippo signaling modulates the development/function of leukocytes and propose directions for future work.
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Affiliation(s)
- Zaid Taha
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON K7L 3N6, Canada.
| | | | - Xiaolong Yang
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON K7L 3N6, Canada.
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13
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Cheng J, Jing Y, Kang D, Yang L, Li J, Yu Z, Peng Z, Li X, Wei Y, Gong Q, Miron RJ, Zhang Y, Liu C. The Role of Mst1 in Lymphocyte Homeostasis and Function. Front Immunol 2018; 9:149. [PMID: 29459865 PMCID: PMC5807685 DOI: 10.3389/fimmu.2018.00149] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 01/17/2018] [Indexed: 12/15/2022] Open
Abstract
The Hippo pathway is an evolutionarily conserved pathway crucial for regulating tissue size and for limiting cancer development. However, recent work has also uncovered key roles for the mammalian Hippo kinases, Mst1/2, in driving appropriate immune responses by directing T cell migration, morphology, survival, differentiation, and activation. In this review, we discuss the classical signaling pathways orchestrated by the Hippo signaling pathway, and describe how Mst1/2 direct T cell function by mechanisms not seeming to involve the classical Hippo pathway. We also discuss why Mst1/2 might have different functions within organ systems and the immune system. Overall, understanding how Mst1/2 transmit signals to discrete biological processes in different cell types might allow for the development of better drug therapies for the treatments of cancers and immune-related diseases.
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Affiliation(s)
- Jiali Cheng
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yukai Jing
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Danqing Kang
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lu Yang
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingwen Li
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ze Yu
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zican Peng
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xingbo Li
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yin Wei
- Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China.,Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Richard J Miron
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yufeng Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Chaohong Liu
- Department of Microbiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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14
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Fan Z, Ley K. Leukocyte arrest: Biomechanics and molecular mechanisms of β2 integrin activation. Biorheology 2016; 52:353-77. [PMID: 26684674 DOI: 10.3233/bir-15085] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Integrins are a group of heterodimeric transmembrane receptors that play essential roles in cell-cell and cell-matrix interaction. Integrins are important in many physiological processes and diseases. Integrins acquire affinity to their ligand by undergoing molecular conformational changes called activation. Here we review the molecular biomechanics during conformational changes of integrins, integrin functions in leukocyte biorheology (adhesive functions during rolling and arrest) and molecules involved in integrin activation.
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Affiliation(s)
- Zhichao Fan
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Klaus Ley
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.,Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
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15
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Xu X, Wang X, Todd EM, Jaeger ER, Vella JL, Mooren OL, Feng Y, Hu J, Cooper JA, Morley SC, Huang YH. Mst1 Kinase Regulates the Actin-Bundling Protein L-Plastin To Promote T Cell Migration. THE JOURNAL OF IMMUNOLOGY 2016; 197:1683-91. [PMID: 27465533 DOI: 10.4049/jimmunol.1600874] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 06/27/2016] [Indexed: 12/31/2022]
Abstract
Exploring the mechanisms controlling lymphocyte trafficking is essential for understanding the function of the immune system and the pathophysiology of immunodeficiencies. The mammalian Ste20-like kinase 1 (Mst1) has been identified as a critical signaling mediator of T cell migration, and loss of Mst1 results in immunodeficiency disease. Although Mst1 is known to support T cell migration through induction of cell polarization and lamellipodial formation, the downstream effectors of Mst1 are incompletely defined. Mice deficient for the actin-bundling protein L-plastin (LPL) have phenotypes similar to mice lacking Mst1, including decreased T cell polarization, lamellipodial formation, and cell migration. We therefore asked whether LPL functions downstream of Mst1. The regulatory N-terminal domain of LPL contains a consensus Mst1 phosphorylation site at Thr(89) We found that Mst1 can phosphorylate LPL in vitro and that Mst1 can interact with LPL in cells. Removal of the Mst1 phosphorylation site by mutating Thr(89) to Ala impaired localization of LPL to the actin-rich lamellipodia of T cells. Expression of the T89A LPL mutant failed to restore migration of LPL-deficient T cells in vitro. Furthermore, expression of T89A LPL in LPL-deficient hematopoietic cells, using bone marrow chimeras, failed to rescue the phenotype of decreased thymic egress. These results identify LPL as a key effector of Mst1 and establish a novel mechanism linking a signaling intermediate to an actin-binding protein critical to T cell migration.
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Affiliation(s)
- Xiaolu Xu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Xinxin Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Elizabeth M Todd
- Division of Infectious Diseases, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110
| | - Emily R Jaeger
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Jennifer L Vella
- Department of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03756
| | - Olivia L Mooren
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110; Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Yunfeng Feng
- Department of Pathology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03756
| | - Jiancheng Hu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - John A Cooper
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110; Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Sharon Celeste Morley
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; Division of Infectious Diseases, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110;
| | - Yina H Huang
- Department of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03756; Department of Pathology, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03756
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16
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Du X, Yu A, Tao W. The non-canonical Hippo/Mst pathway in lymphocyte development and functions. Acta Biochim Biophys Sin (Shanghai) 2015; 47:60-4. [PMID: 25487919 DOI: 10.1093/abbs/gmu112] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The canonical Hippo/Mst pathway, originally discovered in Drosophila, is famous for its function in promoting apoptosis, inhibiting cell proliferation and tumorigenesis, and regulating tissue regeneration. However, emerging evidence shows that multiple non-canonical Hippo signaling pathways are also implicated in the regulation of various other biological processes. Recent studies have revealed that Mst1/2, the core kinases of Hippo/Mst pathway are required for T cell development, function, survival, trafficking, and homing, and also involved in regulation of autoimmunity. In this review, we discuss the roles of non-canonical Hippo/Mst signaling pathways in lymphocyte development and functions.
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Affiliation(s)
- Xingrong Du
- State Key Laboratory of Genetic Engineering and Institute of Developmental Biology and Molecular Medicine, Scholl of Life Sciences, Fudan University, Shanghai 200433, China
| | - Alan Yu
- University of Toronto, Toronto, Ontario M5S2J7, Canada
| | - Wufan Tao
- State Key Laboratory of Genetic Engineering and Institute of Developmental Biology and Molecular Medicine, Scholl of Life Sciences, Fudan University, Shanghai 200433, China
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