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Kumar B, Singh A, Basar R, Uprety N, Li Y, Fan H, Cortes AKN, Kaplan M, Acharya S, Shaim H, Xu AC, Wu M, Ensley E, Fang D, Banerjee PP, Garcia LM, Tiberti S, Lin P, Rafei H, Munir MN, Moore M, Shanley M, Mendt M, Kerbauy LN, Liu B, Biederstädt A, Gokdemir E, Ghosh S, Kundu K, Reyes-Silva F, Jiang XR, Wan X, Gilbert AL, Dede M, Mohanty V, Dou J, Zhang P, Liu E, Muniz-Feliciano L, Deyter GM, Jain AK, Rodriguez-Sevilla JJ, Colla S, Garcia-Manero G, Shpall EJ, Chen K, Abbas HA, Rai K, Rezvani K, Daher M. BATF is a major driver of NK cell epigenetic reprogramming and dysfunction in AML. Sci Transl Med 2024; 16:eadp0004. [PMID: 39259809 DOI: 10.1126/scitranslmed.adp0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 06/10/2024] [Accepted: 08/08/2024] [Indexed: 09/13/2024]
Abstract
Myelodysplastic syndrome and acute myeloid leukemia (AML) belong to a continuous disease spectrum of myeloid malignancies with poor prognosis in the relapsed/refractory setting necessitating novel therapies. Natural killer (NK) cells from patients with myeloid malignancies display global dysfunction with impaired killing capacity, altered metabolism, and an exhausted phenotype at the single-cell transcriptomic and proteomic levels. In this study, we identified that this dysfunction was mediated through a cross-talk between NK cells and myeloid blasts necessitating cell-cell contact. NK cell dysfunction could be prevented by targeting the αvβ-integrin/TGF-β/SMAD pathway but, once established, was persistent because of profound epigenetic reprogramming. We identified BATF as a core transcription factor and the main mediator of this NK cell dysfunction in AML. Mechanistically, we found that BATF was directly regulated and induced by SMAD2/3 and, in turn, bound to key genes related to NK cell exhaustion, such as HAVCR2, LAG3, TIGIT, and CTLA4. BATF deletion enhanced NK cell function against AML in vitro and in vivo. Collectively, our findings reveal a previously unidentified mechanism of NK immune evasion in AML manifested by epigenetic rewiring and inactivation of NK cells by myeloid blasts. This work highlights the importance of using healthy allogeneic NK cells as an adoptive cell therapy to treat patients with myeloid malignancies combined with strategies aimed at preventing the dysfunction by targeting the TGF-β pathway or BATF.
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Affiliation(s)
- Bijender Kumar
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anand Singh
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rafet Basar
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Nadima Uprety
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ye Li
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Huihui Fan
- Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Ana Karen Nunez Cortes
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mecit Kaplan
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sunil Acharya
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hila Shaim
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anna C Xu
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Manrong Wu
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Emily Ensley
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dexing Fang
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Pinaki P Banerjee
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Luciana Melo Garcia
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Silvia Tiberti
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Paul Lin
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hind Rafei
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Maliha Nuzhat Munir
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Madison Moore
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mayra Shanley
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mayela Mendt
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lucila N Kerbauy
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Stem Cell Transplantation and Hemotherapy/Cellular Therapy, Hospital Israelita Albert Einstein, Sao Paulo 05652-900, Brazil
| | - Bin Liu
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alexander Biederstädt
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Elif Gokdemir
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Susmita Ghosh
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kiran Kundu
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Francia Reyes-Silva
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xin Ru Jiang
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xinhai Wan
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - April L Gilbert
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Merve Dede
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Vakul Mohanty
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jinzhuang Dou
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Patrick Zhang
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Enli Liu
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Luis Muniz-Feliciano
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Gary M Deyter
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Abhinav K Jain
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | - Simona Colla
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Guillermo Garcia-Manero
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Elizabeth J Shpall
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ken Chen
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hussein A Abbas
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kunal Rai
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- MD Anderson Cancer Center Epigenetics Therapy Initiative, Houston, TX 77030, USA
| | - Katayoun Rezvani
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - May Daher
- Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Reed AE, Peraza J, van den Haak F, Hernandez ER, Gibbs RA, Chinn IK, Lupski JR, Marchi E, Reshef R, Alobeid B, Mace EM, Orange JS. β-Actin G342D as a Cause of NK Cell Deficiency Impairing Lytic Synapse Termination. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:962-973. [PMID: 38315012 PMCID: PMC11337350 DOI: 10.4049/jimmunol.2300671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/09/2024] [Indexed: 02/07/2024]
Abstract
NK cell deficiency (NKD) occurs when an individual's major clinical immunodeficiency derives from abnormal NK cells and is associated with several genetic etiologies. Three categories of β-actin-related diseases with over 60 ACTB (β-actin) variants have previously been identified, none with a distinct NK cell phenotype. An individual with mild developmental delay, macrothrombocytopenia, and susceptibility to infections, molluscum contagiosum virus, and EBV-associated lymphoma had functional NKD for over a decade. A de novo ACTB variant encoding G342D β-actin was identified and was consistent with the individual's developmental and platelet phenotype. This novel variant also was found to have direct impact in NK cells because its expression in the human NK cell line YTS (YTS-NKD) caused increased cell spreading in lytic immune synapses created on activating surfaces. YTS-NKD cells were able to degranulate and perform cytotoxicity, but they demonstrated defective serial killing because of prolonged conjugation to the killed target cell and thus were effectively unable to terminate lytic synapses. G342D β-actin results in a novel, to our knowledge, mechanism of functional NKD via increased synaptic spreading and defective lytic synapse termination with resulting impaired serial killing, leading to overall reductions in NK cell cytotoxicity.
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Affiliation(s)
- Abigail E Reed
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY
| | - Jackeline Peraza
- Department of Biology, Barnard College of Columbia University, New York, NY
| | - Frederique van den Haak
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY
| | - Evelyn R Hernandez
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
| | - Richard A Gibbs
- Department of Molecular and Human Genetics, Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX
| | - Ivan K Chinn
- Division of Immunology, Allergy and Retrovirology, Department of Pediatrics, Texas Children's Hospital and Baylor College of Medicine, Houston, TX
| | - James R Lupski
- Department of Molecular and Human Genetics, Human Genome Sequencing Center, Texas Children's Hospital and Baylor College of Medicine, Houston, TX
- Department of Pediatrics, Texas Children's Hospital and Baylor College of Medicine, Houston, TX
| | - Enrica Marchi
- Division of Hematology-Oncology, Department of Medicine, NCI Designated Cancer Center, University of Virginia, Charlottesville, VA
| | - Ran Reshef
- Blood and Marrow Transplantation and Cell Therapy Program, Columbia University Irving Medical Center, New York, NY
| | - Bachir Alobeid
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY
| | - Emily M Mace
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
| | - Jordan S Orange
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
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R P, Shanmugam G, Rakshit S, Sarkar K. Role of Wiskott Aldrich syndrome protein in haematological malignancies: genetics, molecular mechanisms and therapeutic strategies. Pathol Res Pract 2024; 253:155026. [PMID: 38118219 DOI: 10.1016/j.prp.2023.155026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/07/2023] [Accepted: 12/07/2023] [Indexed: 12/22/2023]
Abstract
As patients continue to suffer from lymphoproliferative and myeloproliferative diseases known as haematopoietic malignancies can affect the bone marrow, blood, lymph nodes, and lymphatic and non-lymphatic organs. Despite advances in the current treatment, there is still a significant challenge for physicians to improve the therapy of HMs. WASp is an important regulator of actin polymerization and the involvement of WASp in transcription is thought to be linked to the DNA damage response and repair. In some studies, severe immunodeficiency and lymphoid malignancy are caused by WASp mutations or the absence of WASp and these mutations in WAS can alter the function and/or expression of the intracellular protein. Loss-of-function and Gain-of-function mutations in WASp have an impact on cancer malignancies' incidence and onset. Recent studies suggest that depending on the clinical or experimental situation, WASPs and WAVEs can operate as a suppressor or enhancers for cancer malignancy. These dual functions of WASPs and WAVEs in cancer likely arose from their multifaceted role in cells that could be targeted for anticancer drug development. The significant role and their association of WASp in Chronic myeloid leukaemia, Juvenile myelomonocytic leukaemia and T-cell lymphoma is discussed. In this review, we described the structure and function of WASp and its family mechanism, analysing major regulatory effectors and summarising the clinical relevance and drugs that specifically target WASp in disease treatment in various hematopoietic malignancies by different approaches.
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Affiliation(s)
- Pradeep R
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India
| | - Geetha Shanmugam
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India
| | - Sudeshna Rakshit
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India
| | - Koustav Sarkar
- Department of Biotechnology, SRM Institute of Science and Technology, Katangulathur, Tamil Nadu 603203, India.
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Wong DCP, Ding JL. The mechanobiology of NK cells- 'Forcing NK to Sense' target cells. Biochim Biophys Acta Rev Cancer 2023; 1878:188860. [PMID: 36791921 DOI: 10.1016/j.bbcan.2023.188860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 02/16/2023]
Abstract
Natural killer (NK) cells are innate immune lymphocytes that recognize and kill cancer and infected cells, which makes them unique 'off-the-shelf' candidates for a new generation of immunotherapies. Biomechanical forces in homeostasis and pathophysiology accrue additional immune regulation for NK immune responses. Indeed, cellular and tissue biomechanics impact NK receptor clustering, cytoskeleton remodeling, NK transmigration through endothelial cells, nuclear mechanics, and even NK-dendritic cell interaction, offering a plethora of unexplored yet important dynamic regulation for NK immunotherapy. Such events are made more complex by the heterogeneity of human NK cells. A significant question remains on whether and how biochemical and biomechanical cues collaborate for NK cell mechanotransduction, a process whereby mechanical force is sensed, transduced, and translated to downstream mechanical and biochemical signalling. Herein, we review recent advances in understanding how NK cells perceive and mechanotransduce biophysical cues. We focus on how the cellular cytoskeleton crosstalk regulates NK cell function while bearing in mind the heterogeneity of NK cells, the direct and indirect mechanical cues for NK anti-tumor activity, and finally, engineering advances that are of translational relevance to NK cell biology at the systems level.
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Affiliation(s)
- Darren Chen Pei Wong
- Department of Biological Sciences, National University of Singapore, 117543, Singapore.
| | - Jeak Ling Ding
- Department of Biological Sciences, National University of Singapore, 117543, Singapore; Integrative Sciences and Engineering Programme, National University of Singapore, 119077, Singapore.
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5
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Ham H, Medlyn M, Billadeau DD. Locked and Loaded: Mechanisms Regulating Natural Killer Cell Lytic Granule Biogenesis and Release. Front Immunol 2022; 13:871106. [PMID: 35558071 PMCID: PMC9088006 DOI: 10.3389/fimmu.2022.871106] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/29/2022] [Indexed: 11/22/2022] Open
Abstract
NK cell-mediated cytotoxicity is a critical element of our immune system required for protection from microbial infections and cancer. NK cells bind to and eliminate infected or cancerous cells via direct secretion of cytotoxic molecules toward the bound target cells. In this review, we summarize the current understanding of the molecular regulations of NK cell cytotoxicity, focusing on lytic granule development and degranulation processes. NK cells synthesize apoptosis-inducing proteins and package them into specialized organelles known as lytic granules (LGs). Upon activation of NK cells, LGs converge with the microtubule organizing center through dynein-dependent movement along microtubules, ultimately polarizing to the cytotoxic synapse where they subsequently fuse with the NK plasma membrane. From LGs biogenesis to degranulation, NK cells utilize several strategies to protect themselves from their own cytotoxic molecules. Additionally, molecular pathways that enable NK cells to perform serial killing are beginning to be elucidated. These advances in the understanding of the molecular pathways behind NK cell cytotoxicity will be important to not only improve current NK cell-based anti-cancer therapies but also to support the discovery of additional therapeutic opportunities.
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Affiliation(s)
- Hyoungjun Ham
- Division of Oncology Research, Mayo Clinic, Rochester, MN, United States
| | - Michael Medlyn
- Department of Immunology College of Medicine, Mayo Clinic, Rochester, MN, United States
| | - Daniel D Billadeau
- Division of Oncology Research, Mayo Clinic, Rochester, MN, United States.,Department of Immunology College of Medicine, Mayo Clinic, Rochester, MN, United States
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Brauning A, Rae M, Zhu G, Fulton E, Admasu TD, Stolzing A, Sharma A. Aging of the Immune System: Focus on Natural Killer Cells Phenotype and Functions. Cells 2022; 11:cells11061017. [PMID: 35326467 PMCID: PMC8947539 DOI: 10.3390/cells11061017] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/10/2022] [Accepted: 03/14/2022] [Indexed: 02/01/2023] Open
Abstract
Aging is the greatest risk factor for nearly all major chronic diseases, including cardiovascular diseases, cancer, Alzheimer’s and other neurodegenerative diseases of aging. Age-related impairment of immune function (immunosenescence) is one important cause of age-related morbidity and mortality, which may extend beyond its role in infectious disease. One aspect of immunosenescence that has received less attention is age-related natural killer (NK) cell dysfunction, characterized by reduced cytokine secretion and decreased target cell cytotoxicity, accompanied by and despite an increase in NK cell numbers with age. Moreover, recent studies have revealed that NK cells are the central actors in the immunosurveillance of senescent cells, whose age-related accumulation is itself a probable contributor to the chronic sterile low-grade inflammation developed with aging (“inflammaging”). NK cell dysfunction is therefore implicated in the increasing burden of infection, malignancy, inflammatory disorders, and senescent cells with age. This review will focus on recent advances and open questions in understanding the interplay between systemic inflammation, senescence burden, and NK cell dysfunction in the context of aging. Understanding the factors driving and enforcing NK cell aging may potentially lead to therapies countering age-related diseases and underlying drivers of the biological aging process itself.
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Affiliation(s)
- Ashley Brauning
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
| | - Michael Rae
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
| | - Gina Zhu
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
| | - Elena Fulton
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
| | - Tesfahun Dessale Admasu
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
| | - Alexandra Stolzing
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
- Centre for Biological Engineering, Wolfson School of Electrical, Material and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK
- Correspondence: (A.S.); (A.S.)
| | - Amit Sharma
- SENS Research Foundation, Mountain View, CA 94041, USA; (A.B.); (M.R.); (G.Z.); (E.F.); (T.D.A.)
- Correspondence: (A.S.); (A.S.)
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Cassioli C, Baldari CT. Lymphocyte Polarization During Immune Synapse Assembly: Centrosomal Actin Joins the Game. Front Immunol 2022; 13:830835. [PMID: 35222415 PMCID: PMC8873515 DOI: 10.3389/fimmu.2022.830835] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Interactions among immune cells are essential for the development of adaptive immune responses. The immunological synapse (IS) provides a specialized platform for integration of signals and intercellular communication between T lymphocytes and antigen presenting cells (APCs). In the T cell the reorganization of surface molecules at the synaptic interface is initiated by T cell receptor binding to a cognate peptide-major histocompatibility complex on the APC surface and is accompanied by a polarized remodelling of the cytoskeleton and centrosome reorientation to a subsynaptic position. Although there is a general agreement on polarizing signals and mechanisms driving centrosome reorientation during IS assembly, the primary events that prepare for centrosome repositioning remain largely unexplored. It has been recently shown that in resting lymphocytes a local polymerization of filamentous actin (F-actin) at the centrosome contributes to anchoring this organelle to the nucleus. During early stages of IS formation centrosomal F-actin undergoes depletion, allowing for centrosome detachment from the nucleus and its polarization towards the synaptic membrane. We recently demonstrated that in CD4+ T cells the reduction in centrosomal F-actin relies on the activity of a centrosome-associated proteasome and implicated the ciliopathy-related Bardet-Biedl syndrome 1 protein in the dynein-dependent recruitment of the proteasome 19S regulatory subunit to the centrosome. In this short review we will feature our recent findings that collectively provide a new function for BBS proteins and the proteasome in actin dynamics, centrosome polarization and T cell activation.
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Degranulation enhances presynaptic membrane packing, which protects NK cells from perforin-mediated autolysis. PLoS Biol 2021. [DOI: 10.1371/journal.pbio.3001328
expr 949426982 + 863878017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Natural killer (NK) cells kill a target cell by secreting perforin into the lytic immunological synapse, a specialized interface formed between the NK cell and its target. Perforin creates pores in target cell membranes allowing delivery of proapoptotic enzymes. Despite the fact that secreted perforin is in close range to both the NK and target cell membranes, the NK cell typically survives while the target cell does not. How NK cells preferentially avoid death during the secretion of perforin via the degranulation of their perforin-containing organelles (lytic granules) is perplexing. Here, we demonstrate that NK cells are protected from perforin-mediated autolysis by densely packed and highly ordered presynaptic lipid membranes, which increase packing upon synapse formation. When treated with 7-ketocholesterol, lipid packing is reduced in NK cells making them susceptible to perforin-mediated lysis after degranulation. Using high-resolution imaging and lipidomics, we identified lytic granules themselves as having endogenously densely packed lipid membranes. During degranulation, lytic granule–cell membrane fusion thereby further augments presynaptic membrane packing, enhancing membrane protection at the specific sites where NK cells would face maximum concentrations of secreted perforin. Additionally, we found that an aggressive breast cancer cell line is perforin resistant and evades NK cell–mediated killing owing to a densely packed postsynaptic membrane. By disrupting membrane packing, these cells were switched to an NK-susceptible state, which could suggest strategies for improving cytotoxic cell-based cancer therapies. Thus, lipid membranes serve an unexpected role in NK cell functionality protecting them from autolysis, while degranulation allows for the inherent lytic granule membrane properties to create local ordered lipid “shields” against self-destruction.
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9
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Li Y, Orange JS. Degranulation enhances presynaptic membrane packing, which protects NK cells from perforin-mediated autolysis. PLoS Biol 2021; 19:e3001328. [PMID: 34343168 PMCID: PMC8330931 DOI: 10.1371/journal.pbio.3001328&set/a 870330320+893642561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Natural killer (NK) cells kill a target cell by secreting perforin into the lytic immunological synapse, a specialized interface formed between the NK cell and its target. Perforin creates pores in target cell membranes allowing delivery of proapoptotic enzymes. Despite the fact that secreted perforin is in close range to both the NK and target cell membranes, the NK cell typically survives while the target cell does not. How NK cells preferentially avoid death during the secretion of perforin via the degranulation of their perforin-containing organelles (lytic granules) is perplexing. Here, we demonstrate that NK cells are protected from perforin-mediated autolysis by densely packed and highly ordered presynaptic lipid membranes, which increase packing upon synapse formation. When treated with 7-ketocholesterol, lipid packing is reduced in NK cells making them susceptible to perforin-mediated lysis after degranulation. Using high-resolution imaging and lipidomics, we identified lytic granules themselves as having endogenously densely packed lipid membranes. During degranulation, lytic granule-cell membrane fusion thereby further augments presynaptic membrane packing, enhancing membrane protection at the specific sites where NK cells would face maximum concentrations of secreted perforin. Additionally, we found that an aggressive breast cancer cell line is perforin resistant and evades NK cell-mediated killing owing to a densely packed postsynaptic membrane. By disrupting membrane packing, these cells were switched to an NK-susceptible state, which could suggest strategies for improving cytotoxic cell-based cancer therapies. Thus, lipid membranes serve an unexpected role in NK cell functionality protecting them from autolysis, while degranulation allows for the inherent lytic granule membrane properties to create local ordered lipid "shields" against self-destruction.
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Affiliation(s)
- Yu Li
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, United States of America.,Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, United States of America
| | - Jordan S Orange
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, United States of America
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10
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Li Y, Orange JS. Degranulation enhances presynaptic membrane packing, which protects NK cells from perforin-mediated autolysis. PLoS Biol 2021; 19:e3001328. [PMID: 34343168 PMCID: PMC8330931 DOI: 10.1371/journal.pbio.3001328] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 06/16/2021] [Indexed: 12/27/2022] Open
Abstract
Natural killer (NK) cells kill a target cell by secreting perforin into the lytic immunological synapse, a specialized interface formed between the NK cell and its target. Perforin creates pores in target cell membranes allowing delivery of proapoptotic enzymes. Despite the fact that secreted perforin is in close range to both the NK and target cell membranes, the NK cell typically survives while the target cell does not. How NK cells preferentially avoid death during the secretion of perforin via the degranulation of their perforin-containing organelles (lytic granules) is perplexing. Here, we demonstrate that NK cells are protected from perforin-mediated autolysis by densely packed and highly ordered presynaptic lipid membranes, which increase packing upon synapse formation. When treated with 7-ketocholesterol, lipid packing is reduced in NK cells making them susceptible to perforin-mediated lysis after degranulation. Using high-resolution imaging and lipidomics, we identified lytic granules themselves as having endogenously densely packed lipid membranes. During degranulation, lytic granule-cell membrane fusion thereby further augments presynaptic membrane packing, enhancing membrane protection at the specific sites where NK cells would face maximum concentrations of secreted perforin. Additionally, we found that an aggressive breast cancer cell line is perforin resistant and evades NK cell-mediated killing owing to a densely packed postsynaptic membrane. By disrupting membrane packing, these cells were switched to an NK-susceptible state, which could suggest strategies for improving cytotoxic cell-based cancer therapies. Thus, lipid membranes serve an unexpected role in NK cell functionality protecting them from autolysis, while degranulation allows for the inherent lytic granule membrane properties to create local ordered lipid "shields" against self-destruction.
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Affiliation(s)
- Yu Li
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, United States of America
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, United States of America
| | - Jordan S. Orange
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, United States of America
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11
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Kopf A, Kiermaier E. Dynamic Microtubule Arrays in Leukocytes and Their Role in Cell Migration and Immune Synapse Formation. Front Cell Dev Biol 2021; 9:635511. [PMID: 33634136 PMCID: PMC7900162 DOI: 10.3389/fcell.2021.635511] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/18/2021] [Indexed: 01/13/2023] Open
Abstract
The organization of microtubule arrays in immune cells is critically important for a properly operating immune system. Leukocytes are white blood cells of hematopoietic origin, which exert effector functions of innate and adaptive immune responses. During these processes the microtubule cytoskeleton plays a crucial role for establishing cell polarization and directed migration, targeted secretion of vesicles for T cell activation and cellular cytotoxicity as well as the maintenance of cell integrity. Considering this large spectrum of distinct effector functions, leukocytes require flexible microtubule arrays, which timely and spatially reorganize allowing the cells to accommodate their specific tasks. In contrast to other specialized cell types, which typically nucleate microtubule filaments from non-centrosomal microtubule organizing centers (MTOCs), leukocytes mainly utilize centrosomes for sites of microtubule nucleation. Yet, MTOC localization as well as microtubule organization and dynamics are highly plastic in leukocytes thus allowing the cells to adapt to different environmental constraints. Here we summarize our current knowledge on microtubule organization and dynamics during immune processes and how these microtubule arrays affect immune cell effector functions. We particularly highlight emerging concepts of microtubule involvement during maintenance of cell shape and physical coherence.
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Affiliation(s)
- Aglaja Kopf
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Eva Kiermaier
- Life and Medical Sciences Institute, Immune and Tumor Biology, University of Bonn, Bonn, Germany
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12
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Ben-Shmuel A, Sabag B, Biber G, Barda-Saad M. The Role of the Cytoskeleton in Regulating the Natural Killer Cell Immune Response in Health and Disease: From Signaling Dynamics to Function. Front Cell Dev Biol 2021; 9:609532. [PMID: 33598461 PMCID: PMC7882700 DOI: 10.3389/fcell.2021.609532] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/11/2021] [Indexed: 01/13/2023] Open
Abstract
Natural killer (NK) cells are innate lymphoid cells, which play key roles in elimination of virally infected and malignant cells. The balance between activating and inhibitory signals derived from NK surface receptors govern the NK cell immune response. The cytoskeleton facilitates most NK cell effector functions, such as motility, infiltration, conjugation with target cells, immunological synapse assembly, and cytotoxicity. Though many studies have characterized signaling pathways that promote actin reorganization in immune cells, it is not completely clear how particular cytoskeletal architectures at the immunological synapse promote effector functions, and how cytoskeletal dynamics impact downstream signaling pathways and activation. Moreover, pioneering studies employing advanced imaging techniques have only begun to uncover the architectural complexity dictating the NK cell activation threshold; it is becoming clear that a distinct organization of the cytoskeleton and signaling receptors at the NK immunological synapse plays a decisive role in activation and tolerance. Here, we review the roles of the actin cytoskeleton in NK cells. We focus on how actin dynamics impact cytolytic granule secretion, NK cell motility, and NK cell infiltration through tissues into inflammatory sites. We will also describe the additional cytoskeletal components, non-muscle Myosin II and microtubules that play pivotal roles in NK cell activity. Furthermore, special emphasis will be placed on the role of the cytoskeleton in assembly of immunological synapses, and how mutations or downregulation of cytoskeletal accessory proteins impact NK cell function in health and disease.
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Affiliation(s)
- Aviad Ben-Shmuel
- Laboratory of Molecular and Applied Immunology, The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel
| | - Batel Sabag
- Laboratory of Molecular and Applied Immunology, The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel
| | - Guy Biber
- Laboratory of Molecular and Applied Immunology, The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel
| | - Mira Barda-Saad
- Laboratory of Molecular and Applied Immunology, The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Israel
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13
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Gunesch JT, Dixon AL, Ebrahim TAM, Berrien-Elliott MM, Tatineni S, Kumar T, Hegewisch-Solloa E, Fehniger TA, Mace EM. CD56 regulates human NK cell cytotoxicity through Pyk2. eLife 2020; 9:e57346. [PMID: 32510326 PMCID: PMC7358009 DOI: 10.7554/elife.57346] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 06/07/2020] [Indexed: 12/12/2022] Open
Abstract
Human natural killer (NK) cells are defined as CD56+CD3-. Despite its ubiquitous expression on human NK cells the role of CD56 (NCAM) in human NK cell cytotoxic function has not been defined. In non-immune cells, NCAM can induce signaling, mediate adhesion, and promote exocytosis through interactions with focal adhesion kinase (FAK). Here we demonstrate that deletion of CD56 on the NK92 cell line leads to impaired cytotoxic function. CD56-knockout (KO) cells fail to polarize during immunological synapse (IS) formation and have severely impaired exocytosis of lytic granules. Phosphorylation of the FAK family member Pyk2 at tyrosine 402 is decreased in NK92 CD56-KO cells, demonstrating a functional link between CD56 and signaling in human NK cells. Cytotoxicity, lytic granule exocytosis, and the phosphorylation of Pyk2 are rescued by the reintroduction of CD56. These data highlight a novel functional role for CD56 in stimulating exocytosis and promoting cytotoxicity in human NK cells.
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Affiliation(s)
| | - Amera L Dixon
- Baylor College of MedicineHoustonUnited States
- Rice UniversityHoustonUnited States
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
| | - Tasneem AM Ebrahim
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
- Barnard CollegeNew YorkUnited States
| | | | | | | | - Everardo Hegewisch-Solloa
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
| | - Todd A Fehniger
- Washington University School of MedicineSt. LouisUnited States
| | - Emily M Mace
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
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14
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Lam MT, Mace EM, Orange JS. A research-driven approach to the identification of novel natural killer cell deficiencies affecting cytotoxic function. Blood 2020; 135:629-637. [PMID: 31945148 PMCID: PMC7046607 DOI: 10.1182/blood.2019000925] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/13/2019] [Indexed: 12/17/2022] Open
Abstract
Natural killer cell deficiencies (NKDs) are an emerging phenotypic subtype of primary immune deficiency. NK cells provide a defense against virally infected cells using a variety of cytotoxic mechanisms, and patients who have defective NK cell development or function can present with atypical, recurrent, or severe herpesviral infections. The current pipeline for investigating NKDs involves the acquisition and clinical assessment of patients with a suspected NKD followed by subsequent in silico, in vitro, and in vivo laboratory research. Evaluation involves initially quantifying NK cells and measuring NK cell cytotoxicity and expression of certain NK cell receptors involved in NK cell development and function. Subsequent studies using genomic methods to identify the potential causative variant are conducted along with variant impact testing to make genotype-phenotype connections. Identification of novel genes contributing to the NKD phenotype can also be facilitated by applying the expanding knowledge of NK cell biology. In this review, we discuss how NKDs that affect NK cell cytotoxicity can be approached in the clinic and laboratory for the discovery of novel gene variants.
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Affiliation(s)
- Michael T Lam
- Department of Pediatrics, Columbia University Medical Center, New York, NY; and
- Medical Scientist Training Program, and
- Translational Biology and Molecular Medicine Graduate Program, Baylor College of Medicine, Houston, TX
| | - Emily M Mace
- Department of Pediatrics, Columbia University Medical Center, New York, NY; and
| | - Jordan S Orange
- Department of Pediatrics, Columbia University Medical Center, New York, NY; and
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15
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Banerjee PP, Pang L, Soldan SS, Miah SM, Eisenberg A, Maru S, Waldman A, Smith EA, Rosenberg-Hasson Y, Hirschberg D, Smith A, Ablashi DV, Campbell KS, Orange JS. KIR2DL4-HLAG interaction at human NK cell-oligodendrocyte interfaces regulates IFN-γ-mediated effects. Mol Immunol 2019; 115:39-55. [PMID: 30482463 PMCID: PMC6543535 DOI: 10.1016/j.molimm.2018.09.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 09/11/2018] [Accepted: 09/30/2018] [Indexed: 12/12/2022]
Abstract
Interactions between germline-encoded natural killer (NK) cell receptors and their respective ligands on tumorigenic or virus-infected cells determine NK cell cytotoxic activity and/or cytokine secretion. NK cell cytokine responses can be augmented in and can potentially contribute to multiple sclerosis (MS), an inflammatory disease of the central nervous system focused upon the oligodendrocytes (OLs). To investigate mechanisms by which NK cells may contribute to MS pathogenesis, we developed an in vitro human model of OL-NK cell interaction. We found that activated, but not resting human NK cells form conjugates with, and mediate cytotoxicity against, human oligodendrocytes. NK cells, when in conjugate with OLs, rapidly synthesize and polarize IFN-γ toward the OLs. IFN-γ is capable of reducing myelin oligodendrocyte and myelin associated glycoproteins (MOG and MAG) content. This activity is independent of MHC class-I mediated inhibition via KIR2DL1, but dependent upon the interaction between NK cell-expressed KIR2DL4 and its oligodendrocyte-expressed ligand, HLA-G. NK cells from patients with MS express higher levels of IFN-γ following conjugation to OLs, more actively promote in vitro reduction of MOG and MAG and have higher frequencies of the KIR2DL4 positive population. These data collectively suggest a mechanism by which NK cells can promote pathogenic effects upon OLs.
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Affiliation(s)
- P P Banerjee
- Baylor College of Medicine, 1 Baylor Plaza, Houston, TX-77030, USA; Center for Human Immunobiology, Texas Children's Hospital, 1102 Bates St, Houston, TX, 77030, USA.
| | - L Pang
- Center for Human Immunobiology, Texas Children's Hospital, 1102 Bates St, Houston, TX, 77030, USA
| | - S S Soldan
- The Wistar Institute, 3601 Spruce St., Philadelphia, PA 19104, USA
| | - S M Miah
- Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
| | - A Eisenberg
- The Children's Hospital of Philadelphia Research Institute, 3401 Civic Center Blvd, Philadelphia, PA 19104, USA
| | - S Maru
- The Children's Hospital of Philadelphia Research Institute, 3401 Civic Center Blvd, Philadelphia, PA 19104, USA
| | - A Waldman
- The Children's Hospital of Philadelphia Research Institute, 3401 Civic Center Blvd, Philadelphia, PA 19104, USA
| | - E A Smith
- Baylor College of Medicine, 1 Baylor Plaza, Houston, TX-77030, USA; Center for Human Immunobiology, Texas Children's Hospital, 1102 Bates St, Houston, TX, 77030, USA
| | - Y Rosenberg-Hasson
- Human Immune Monitoring Center, Stanford School of Medicine, 291 Campus Drive, Stanford, CA, 94305, USA
| | - D Hirschberg
- Human Immune Monitoring Center, Stanford School of Medicine, 291 Campus Drive, Stanford, CA, 94305, USA
| | - A Smith
- Baylor College of Medicine, 1 Baylor Plaza, Houston, TX-77030, USA; Center for Human Immunobiology, Texas Children's Hospital, 1102 Bates St, Houston, TX, 77030, USA
| | - D V Ablashi
- Human Herpes Virus 6 Foundation, 1482 East Valley Road, Suite 619 Santa Barbara, CA 93108, USA
| | - K S Campbell
- Blood Cell Development and Function Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
| | - J S Orange
- Baylor College of Medicine, 1 Baylor Plaza, Houston, TX-77030, USA; Center for Human Immunobiology, Texas Children's Hospital, 1102 Bates St, Houston, TX, 77030, USA
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16
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Human signal transducer and activator of transcription 5b (STAT5b) mutation causes dysregulated human natural killer cell maturation and impaired lytic function. J Allergy Clin Immunol 2019; 145:345-357.e9. [PMID: 31600547 DOI: 10.1016/j.jaci.2019.09.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Patients with signal transducer and activator of transcription 5b (STAT5b) deficiency have impairment in T-cell homeostasis and natural killer (NK) cells which leads to autoimmunity, recurrent infections, and combined immune deficiency. OBJECTIVE In this study we characterized the NK cell defect in STAT5b-deficient human NK cells, as well as Stat5b-/- mice. METHODS We used multiparametric flow cytometry, functional NK cell assays, microscopy, and a Stat5b-/- mouse model to elucidate the effect of impaired and/or absent STAT5b on NK cell development and function. RESULTS This alteration generated a nonfunctional CD56bright NK cell subset characterized by low cytokine production. The CD56dim NK cell subset had decreased expression of perforin and CD16 and a greater frequency of cells expressing markers of immature NK cells. We observed low NK cell numbers and impaired NK cell maturation, suggesting that STAT5b is involved in terminal NK cell maturation in Stat5b-/- mice. Furthermore, human STAT5b-deficient NK cells had low cytolytic capacity, and fixed-cell microscopy showed poor convergence of lytic granules. This was accompanied by decreased expression of costimulatory and activating receptors. Interestingly, granule convergence and cytolytic function were restored after IL-2 stimulation. CONCLUSIONS Our results show that in addition to the impaired terminal maturation of NK cells, human STAT5b mutation leads to impairments in early activation events in NK cell lytic synapse formation. Our data provide further insight into NK cell defects caused by STAT5b deficiency.
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17
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Sarkar A, Rieger H, Paul R. Search and Capture Efficiency of Dynamic Microtubules for Centrosome Relocation during IS Formation. Biophys J 2019; 116:2079-2091. [PMID: 31084903 DOI: 10.1016/j.bpj.2019.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 04/08/2019] [Indexed: 11/29/2022] Open
Abstract
Upon contact with antigen-presenting cells, cytotoxic T lymphocytes (T cells) establish a highly organized contact zone denoted as the immunological synapse (IS). The formation of the IS implies relocation of the microtubule organizing center (MTOC) toward the contact zone, which necessitates a proper connection between the MTOC and the IS via dynamic microtubules (MTs). The efficiency of the MTs finding the IS within the relevant timescale is, however, still illusive. We investigate how MTs search the three-dimensional constrained cellular volume for the IS and bind upon encounter to dynein anchored at the IS cortex. The search efficiency is estimated by calculating the time required for the MTs to reach the dynein-enriched region of the IS. In this study, we develop simple mathematical and numerical models incorporating relevant components of a cell and propose an optimal search strategy. Using the mathematical model, we have quantified the average search time for a wide range of model parameters and proposed an optimized set of values leading to the minimal capture time. Our results show that search times are minimal when the IS formed at the nearest or at the farthest sites on the cell surface with respect to the perinuclear MTOC. The search time increases monotonically away from these two specific sites and is maximal at an intermediate position near the equator of the cell. We observed that search time strongly depends on the number of searching MTs and distance of the MTOC from the nuclear surface.
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Affiliation(s)
- Apurba Sarkar
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal, India.
| | - Heiko Rieger
- Department of Theoretical Physics and Center for Biophysics, Saarland University, Saarbrücken, Germany.
| | - Raja Paul
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal, India.
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18
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Ben-Shmuel A, Joseph N, Sabag B, Barda-Saad M. Lymphocyte mechanotransduction: The regulatory role of cytoskeletal dynamics in signaling cascades and effector functions. J Leukoc Biol 2019; 105:1261-1273. [DOI: 10.1002/jlb.mr0718-267r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 12/19/2018] [Accepted: 01/21/2019] [Indexed: 12/20/2022] Open
Affiliation(s)
- Aviad Ben-Shmuel
- Laboratory of Molecular and Applied Immunology; Bar-Ilan University; The Mina and Everard Goodman Faculty of Life Sciences; Ramat-Gan Israel
| | - Noah Joseph
- Laboratory of Molecular and Applied Immunology; Bar-Ilan University; The Mina and Everard Goodman Faculty of Life Sciences; Ramat-Gan Israel
| | - Batel Sabag
- Laboratory of Molecular and Applied Immunology; Bar-Ilan University; The Mina and Everard Goodman Faculty of Life Sciences; Ramat-Gan Israel
| | - Mira Barda-Saad
- Laboratory of Molecular and Applied Immunology; Bar-Ilan University; The Mina and Everard Goodman Faculty of Life Sciences; Ramat-Gan Israel
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19
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Wilton KM, Billadeau DD. VASP Regulates NK Cell Lytic Granule Convergence. THE JOURNAL OF IMMUNOLOGY 2018; 201:2899-2909. [PMID: 30282752 DOI: 10.4049/jimmunol.1800254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 09/07/2018] [Indexed: 11/19/2022]
Abstract
NK cells eliminate viral-infected and malignant cells through a highly orchestrated series of cytoskeletal rearrangements, resulting in the release of cytolytic granule contents toward the target cell. Central to this process is the convergence of cytolytic granules to a common point, the microtubule-organizing center (MTOC), before delivery to the synapse. In this study, we show that vasodialator-stimulated phosphoprotein (VASP), an actin regulatory protein, localizes to the cytolytic synapse, but surprisingly, shows no impact on conjugate formation or synaptic actin accumulation despite being required for human NK cell-mediated killing. Interestingly, we also find that a pool of VASP copurifies with lytic granules and localizes with lytic granules at the MTOC. Significantly, depletion of VASP decreased lytic granule convergence without impacting MTOC polarization. Using the KHYG-1 cell line in which lytic granules are in a constitutively converged state, we find that either VASP depletion or F-actin destabilization promoted spreading of formerly converged granules. Our results demonstrate a novel requirement for VASP and actin polymerization in maintaining lytic granule convergence during NK cell-mediated killing.
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Affiliation(s)
- Katelynn M Wilton
- Department of Immunology, College of Medicine, Mayo Clinic, Rochester, MN 55905.,Medical Scientist Training Program, College of Medicine, Mayo Clinic, Rochester, MN 55905; and
| | - Daniel D Billadeau
- Department of Immunology, College of Medicine, Mayo Clinic, Rochester, MN 55905; .,Division of Oncology, College of Medicine, Mayo Clinic, Rochester, MN 55905
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20
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Moghadam AR, Patrad E, Tafsiri E, Peng W, Fangman B, Pluard TJ, Accurso A, Salacz M, Shah K, Ricke B, Bi D, Kimura K, Graves L, Najad MK, Dolatkhah R, Sanaat Z, Yazdi M, Tavakolinia N, Mazani M, Amani M, Ghavami S, Gartell R, Reilly C, Naima Z, Esfandyari T, Farassati F. Ral signaling pathway in health and cancer. Cancer Med 2017; 6:2998-3013. [PMID: 29047224 PMCID: PMC5727330 DOI: 10.1002/cam4.1105] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 04/10/2017] [Accepted: 04/14/2017] [Indexed: 12/12/2022] Open
Abstract
The Ral (Ras-Like) signaling pathway plays an important role in the biology of cells. A plethora of effects is regulated by this signaling pathway and its prooncogenic effectors. Our team has demonstrated the overactivation of the RalA signaling pathway in a number of human malignancies including cancers of the liver, ovary, lung, brain, and malignant peripheral nerve sheath tumors. Additionally, we have shown that the activation of RalA in cancer stem cells is higher in comparison with differentiated cancer cells. In this article, we review the role of Ral signaling in health and disease with a focus on the role of this multifunctional protein in the generation of therapies for cancer. An improved understanding of this pathway can lead to development of a novel class of anticancer therapies that functions on the basis of intervention with RalA or its downstream effectors.
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Affiliation(s)
- Adel Rezaei Moghadam
- Department of Human Anatomy and Cell ScienceUniversity of ManitobaWinnipegCanada
| | - Elham Patrad
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Elham Tafsiri
- Department of Pediatrics, Columbia Presbyterian Medical CenterNew YorkNew York
| | - Warner Peng
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Benjamin Fangman
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Timothy J Pluard
- Saint Luke's HospitalUniversity of Missouri at Kansas CityKansas CityMissouri
| | - Anthony Accurso
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Michael Salacz
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Kushal Shah
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Brandon Ricke
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Danse Bi
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Kyle Kimura
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Leland Graves
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Marzieh Khajoie Najad
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Roya Dolatkhah
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Zohreh Sanaat
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Mina Yazdi
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Naeimeh Tavakolinia
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Mohammad Mazani
- Pasteur Institute of IranTehranIran
- Ardabil University of Medical Sciences, BiochemistryArdabilIran
| | - Mojtaba Amani
- Pasteur Institute of IranTehranIran
- Ardabil University of Medical Sciences, BiochemistryArdabilIran
| | - Saeid Ghavami
- Department of Human Anatomy and Cell ScienceUniversity of ManitobaWinnipegCanada
| | - Robyn Gartell
- Department of Pediatrics, Columbia Presbyterian Medical CenterNew YorkNew York
| | - Colleen Reilly
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Zaid Naima
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Tuba Esfandyari
- Department of Medicine, Molecular Medicine LaboratoryThe University of Kansas Medical SchoolKansas CityKansas
| | - Faris Farassati
- Research Service (151)Kansas City Veteran Affairs Medical Center & Midwest Biomedical Research Foundation4801 E Linwood BlvdKansas CityMissouri64128‐2226
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21
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Hsu HT, Mace EM, Carisey AF, Viswanath DI, Christakou AE, Wiklund M, Önfelt B, Orange JS. NK cells converge lytic granules to promote cytotoxicity and prevent bystander killing. J Cell Biol 2016; 215:875-889. [PMID: 27903610 PMCID: PMC5166499 DOI: 10.1083/jcb.201604136] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 09/04/2016] [Accepted: 10/28/2016] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cell activation triggers sequential cellular events leading to destruction of diseased cells. We previously identified lytic granule convergence, a dynein- and integrin signal-dependent movement of lysosome-related organelles to the microtubule-organizing center, as an early step in the cell biological process underlying NK cell cytotoxicity. Why lytic granules converge during NK cell cytotoxicity, however, remains unclear. We experimentally controlled the availability of human ligands to regulate NK cell signaling and promote granule convergence with either directed or nondirected degranulation. By the use of acoustic trap microscopy, we generated specific effector-target cell arrangements to define the impact of the two modes of degranulation. NK cells with converged granules had greater targeted and less nonspecific "bystander" killing. Additionally, NK cells in which dynein was inhibited or integrin blocked under physiological conditions demonstrated increased nondirected degranulation and bystander killing. Thus, NK cells converge lytic granules and thereby improve the efficiency of targeted killing and prevent collateral damage to neighboring healthy cells.
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Affiliation(s)
- Hsiang-Ting Hsu
- Center for Human Immunobiology, Texas Children's Hospital, Houston, TX 77030
- Department of Pediatrics, Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030
| | - Emily M Mace
- Center for Human Immunobiology, Texas Children's Hospital, Houston, TX 77030
- Department of Pediatrics, Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030
| | - Alexandre F Carisey
- Center for Human Immunobiology, Texas Children's Hospital, Houston, TX 77030
- Department of Pediatrics, Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030
| | - Dixita I Viswanath
- Center for Human Immunobiology, Texas Children's Hospital, Houston, TX 77030
- Rice University, Houston, TX 77005
| | - Athanasia E Christakou
- Department of Applied Physics, KTH Royal Institute of Technology, 106 91 Stockholm, Sweden
| | - Martin Wiklund
- Department of Applied Physics, KTH Royal Institute of Technology, 106 91 Stockholm, Sweden
| | - Björn Önfelt
- Department of Applied Physics, KTH Royal Institute of Technology, 106 91 Stockholm, Sweden
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, 171 77 Stockholm, Sweden
| | - Jordan S Orange
- Center for Human Immunobiology, Texas Children's Hospital, Houston, TX 77030
- Department of Pediatrics, Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030
- Rice University, Houston, TX 77005
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22
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Mace EM, Bigley V, Gunesch JT, Chinn IK, Angelo LS, Care MA, Maisuria S, Keller MD, Togi S, Watkin LB, LaRosa DF, Jhangiani SN, Muzny DM, Stray-Pedersen A, Coban Akdemir Z, Smith JB, Hernández-Sanabria M, Le DT, Hogg GD, Cao TN, Freud AG, Szymanski EP, Savic S, Collin M, Cant AJ, Gibbs RA, Holland SM, Caligiuri MA, Ozato K, Paust S, Doody GM, Lupski JR, Orange JS. Biallelic mutations in IRF8 impair human NK cell maturation and function. J Clin Invest 2016; 127:306-320. [PMID: 27893462 DOI: 10.1172/jci86276] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 10/18/2016] [Indexed: 12/12/2022] Open
Abstract
Human NK cell deficiencies are rare yet result in severe and often fatal disease, particularly as a result of viral susceptibility. NK cells develop from hematopoietic stem cells, and few monogenic errors that specifically interrupt NK cell development have been reported. Here we have described biallelic mutations in IRF8, which encodes an interferon regulatory factor, as a cause of familial NK cell deficiency that results in fatal and severe viral disease. Compound heterozygous or homozygous mutations in IRF8 in 3 unrelated families resulted in a paucity of mature CD56dim NK cells and an increase in the frequency of the immature CD56bright NK cells, and this impairment in terminal maturation was also observed in Irf8-/-, but not Irf8+/-, mice. We then determined that impaired maturation was NK cell intrinsic, and gene expression analysis of human NK cell developmental subsets showed that multiple genes were dysregulated by IRF8 mutation. The phenotype was accompanied by deficient NK cell function and was stable over time. Together, these data indicate that human NK cells require IRF8 for development and functional maturation and that dysregulation of this function results in severe human disease, thereby emphasizing a critical role for NK cells in human antiviral defense.
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23
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A major secretory defect of tumour-infiltrating T lymphocytes due to galectin impairing LFA-1-mediated synapse completion. Nat Commun 2016; 7:12242. [PMID: 27447355 PMCID: PMC4961845 DOI: 10.1038/ncomms12242] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 06/15/2016] [Indexed: 12/20/2022] Open
Abstract
Surface galectin has been shown to contribute to dysfunctions of human tumour-infiltrating lymphocytes (TILs). We show here that galectin-covered CD8 TILs produce normal amounts of intracellular cytokines, but fail to secrete them because of defective actin rearrangements at the synapse. The non-secreting TILs also display reduced adhesion to their targets, together with defective LFA-1 recruitment and activation at the synapse. These defects are relieved by releasing surface galectin. As mild LFA-1 blockade on normal blood T cells emulate the defects of galectin-covered TILs, we conclude that galectin prevents the formation of a functional secretory synapse by preventing optimal LFA-1 triggering. Our results highlight a major secretory defect of TILs that is not revealed by widely used intracellular cytokine immunomonitoring assays. They also provide additional insights into the T-cell response, by showing that different thresholds of LFA-1 triggering are required to promote the intracellular production of cytokines and their secretion. Galectin-3 is a sugar-binding protein that can inhibit antitumour cytotoxic immunity. Here the authors show that Galectin-3 expressed by tumour cells inhibits LFA-1 on cytotoxic lymphocytes, impairing immunological synapse formation, IFNg secretion, and target cell killing.
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24
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Barker AR, McIntosh KV, Dawe HR. Centrosome positioning in non-dividing cells. PROTOPLASMA 2016; 253:1007-1021. [PMID: 26319517 DOI: 10.1007/s00709-015-0883-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 08/22/2015] [Indexed: 06/04/2023]
Abstract
Centrioles and centrosomes are found in almost all eukaryotic cells, where they are important for organising the microtubule cytoskeleton in both dividing and non-dividing cells. The spatial location of centrioles and centrosomes is tightly controlled and, in non-dividing cells, plays an important part in cell migration, ciliogenesis and immune cell functions. Here, we examine some of the ways that centrosomes are connected to other organelles and how this impacts on cilium formation, cell migration and immune cell function in metazoan cells.
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Affiliation(s)
- Amy R Barker
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
- Centre for Microvascular Research, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, EC1M 6BQ, London
| | - Kate V McIntosh
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
| | - Helen R Dawe
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK.
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25
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Ueda H, Zhou J, Xie J, Davis MM. Distinct Roles of Cytoskeletal Components in Immunological Synapse Formation and Directed Secretion. THE JOURNAL OF IMMUNOLOGY 2015; 195:4117-25. [PMID: 26392461 DOI: 10.4049/jimmunol.1402175] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 08/25/2015] [Indexed: 01/01/2023]
Abstract
A hallmark of CD4(+) T cell activation and immunological synapse (IS) formation is the migration of the microtubule organization center and associated organelles toward the APCs. In this study, we found that when murine CD4(+) T cells were treated with a microtubule-destabilizing agent (vinblastine) after the formation of IS, the microtubule organization center dispersed and all of the major cellular organelles moved away from the IS. Cytokines were no longer directed toward the synapse but were randomly secreted in quantities similar to those seen in synaptic secretion. However, if the actin cytoskeleton was disrupted at the same time with cytochalasin D, the organelles did not shift away from the IS. These findings suggest that there is a complex interplay between the microtubules and actin cytoskeleton, where microtubules are important for directing particular cytokines into the synapse, but they are not involved in the amount of cytokines that are produced for at least 1 h after IS formation. In addition, we found that they play a critical role in mobilizing organelles to reorient toward the synapse during T cell activation and in stabilizing organelles against the force that is generated through actin polymerization so that they move toward the APCs. These findings show that there is a complex interplay between these major cytoskeletal components during synapse formation and maintenance.
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Affiliation(s)
- Hironori Ueda
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; and Department of Molecular Endocrinology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Jie Zhou
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; and
| | - Jianming Xie
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; and
| | - Mark M Davis
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; and
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26
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Cdc42-Interacting Protein 4 Represses E-Cadherin Expression by Promoting β-Catenin Translocation to the Nucleus in Murine Renal Tubular Epithelial Cells. Int J Mol Sci 2015; 16:19170-83. [PMID: 26287173 PMCID: PMC4581292 DOI: 10.3390/ijms160819170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/13/2015] [Accepted: 07/29/2015] [Indexed: 01/09/2023] Open
Abstract
Renal fibrosis is an inevitable outcome of end-stage chronic kidney disease. During this process, epithelial cells lose E-cadherin expression. β-Catenin may act as a mediator by accumulation and translocation to the nucleus. Studies have suggested that CIP4, a Cdc42 effector protein, is associated with β-catenin. However, whether CIP4 contributes to E-cadherin loss in epithelial cells by regulating β-catenin translocation is unclear. In this study, we investigated the involvement of CIP4 in β-catenin translocation. Expression of CIP4 was upregulated in renal tissues of 5/6 nephrectomized rats and mainly distributed in renal tubular epithelia. In TGF-β1-treated NRK-52E cells, upregulation of CIP4 expression was accompanied by reduced expression of E-cadherin. CIP4 overexpression promoted the translocation of β-catenin to the nucleus, which was accompanied by reduced expression of E-cadherin even without TGF-β1 stimulation. In contrast, CIP4 depletion by using siRNA inhibited the translocation of β-catenin to the nucleus and reversed the decrease in expression of E-cadherin. The interaction between CIP4 and β-catenin was detected. We also show that β-catenin depletion could restore the expression of E-cadherin that was suppressed by CIP4 overexpression. In conclusion, these results suggest that CIP4 overexpression represses E-cadherin expression by promoting β-catenin translocation to the nucleus.
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27
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Tonucci FM, Hidalgo F, Ferretti A, Almada E, Favre C, Goldenring JR, Kaverina I, Kierbel A, Larocca MC. Centrosomal AKAP350 and CIP4 act in concert to define the polarized localization of the centrosome and Golgi in migratory cells. J Cell Sci 2015. [PMID: 26208639 DOI: 10.1242/jcs.170878] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The acquisition of a migratory phenotype is central in processes as diverse as embryo differentiation and tumor metastasis. An early event in this phenomenon is the generation of a nucleus-centrosome-Golgi back-to-front axis. AKAP350 (also known as AKAP9) is a Golgi and centrosome scaffold protein that is involved in microtubule nucleation. AKAP350 interacts with CIP4 (also known as TRIP10), a cdc42 effector that regulates actin dynamics. The present study aimed to characterize the participation of centrosomal AKAP350 in the acquisition of migratory polarity, and the involvement of CIP4 in the pathway. The decrease in total or in centrosomal AKAP350 led to decreased formation of the nucleus-centrosome-Golgi axis and defective cell migration. CIP4 localized at the centrosome, which was enhanced in migratory cells, but inhibited in cells with decreased centrosomal AKAP350. A decrease in the CIP4 expression or inhibition of the CIP4-AKAP350 interaction also led to defective cell polarization. Centrosome positioning, but not nuclear movement, was affected by loss of CIP4 or AKAP350 function. Our results support a model in which AKAP350 recruits CIP4 to the centrosome, providing a centrosomal scaffold to integrate microtubule and actin dynamics, thus enabling centrosome polarization and ensuring cell migration directionality.
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Affiliation(s)
- Facundo M Tonucci
- Instituto de Fisiología Experimental, Consejo de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario 2000, Argentina
| | - Florencia Hidalgo
- Instituto de Fisiología Experimental, Consejo de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario 2000, Argentina
| | - Anabela Ferretti
- Instituto de Fisiología Experimental, Consejo de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario 2000, Argentina
| | - Evangelina Almada
- Instituto de Fisiología Experimental, Consejo de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario 2000, Argentina
| | - Cristián Favre
- Instituto de Fisiología Experimental, Consejo de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario 2000, Argentina
| | - James R Goldenring
- Department of Surgery, Epithelial Biology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center and the Nashville VA Medical Center, Nashville, TN 37232, USA Department of Cell and Developmental Biology, Epithelial Biology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center and the Nashville VA Medical Center, Nashville, TN 37232, USA
| | - Irina Kaverina
- Department of Cell and Developmental Biology, Epithelial Biology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center and the Nashville VA Medical Center, Nashville, TN 37232, USA
| | - Arlinet Kierbel
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde (IIB-INTECH), Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín 1650, Buenos Aires, Argentina
| | - M Cecilia Larocca
- Instituto de Fisiología Experimental, Consejo de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario 2000, Argentina
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28
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Ham H, Huynh W, Schoon RA, Vale RD, Billadeau DD. HkRP3 is a microtubule-binding protein regulating lytic granule clustering and NK cell killing. THE JOURNAL OF IMMUNOLOGY 2015; 194:3984-96. [PMID: 25762780 DOI: 10.4049/jimmunol.1402897] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 02/05/2015] [Indexed: 11/19/2022]
Abstract
NK cells provide host defense by killing viral-infected and cancerous cells through the secretion of preformed lytic granules. Polarization of the lytic granules toward the target cell is dependent on an intact microtubule (MT) network as well as MT motors. We have recently shown that DOCK8, a gene mutated in a primary immunodeficiency syndrome, is involved in NK cell killing in part through its effects on MT organizing center (MTOC) polarization. In this study, we identified Hook-related protein 3 (HkRP3) as a novel DOCK8- and MT-binding protein. We further show that HkRP3 is present in lytic granule fractions and interacts with the dynein motor complex and MTs. Significantly, depletion of HkPR3 impaired NK cell cytotoxicity, which could be attributed to a defect in not only MTOC polarity, but also impaired clustering of lytic granules around the MTOC. Our results demonstrate an important role for HkRP3 in regulating the clustering of lytic granules and MTOC repositioning during the development of NK cell-mediated killing.
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Affiliation(s)
- Hyoungjun Ham
- Department of Immunology, Mayo Graduate School, College of Medicine, Mayo Clinic, Rochester, MN 55905
| | - Walter Huynh
- Department of Cellular and Molecular Pharmacology, Howard Hughes Medical Institute, University of California San Francisco, San Francisco, CA 94158; and
| | - Renee A Schoon
- Department of Immunology, Mayo Graduate School, College of Medicine, Mayo Clinic, Rochester, MN 55905; Division of Oncology Research, Schulze Center for Novel Therapeutics, College of Medicine, Mayo Clinic, Rochester, MN 55905
| | - Ronald D Vale
- Department of Cellular and Molecular Pharmacology, Howard Hughes Medical Institute, University of California San Francisco, San Francisco, CA 94158; and
| | - Daniel D Billadeau
- Department of Immunology, Mayo Graduate School, College of Medicine, Mayo Clinic, Rochester, MN 55905; Division of Oncology Research, Schulze Center for Novel Therapeutics, College of Medicine, Mayo Clinic, Rochester, MN 55905
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29
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Briercheck EL, Trotta R, Chen L, Hartlage AS, Cole JP, Cole TD, Mao C, Banerjee PP, Hsu HT, Mace EM, Ciarlariello D, Mundy-Bosse BL, Garcia-Cao I, Scoville SD, Yu L, Pilarski R, Carson WE, Leone G, Pandolfi PP, Yu J, Orange JS, Caligiuri MA. PTEN is a negative regulator of NK cell cytolytic function. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2015; 194:1832-40. [PMID: 25595786 PMCID: PMC4319309 DOI: 10.4049/jimmunol.1401224] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 12/05/2014] [Indexed: 12/11/2022]
Abstract
Human NK cells are characterized by their ability to initiate an immediate and direct cytolytic response to virally infected or malignantly transformed cells. Within human peripheral blood, the more mature CD56(dim) NK cell efficiently kills malignant targets at rest, whereas the less mature CD56(bright) NK cells cannot. In this study, we show that resting CD56(bright) NK cells express significantly more phosphatase and tensin homolog deleted on chromosome 10 (PTEN) protein when compared with CD56(dim) NK cells. Consistent with this, forced overexpression of PTEN in NK cells resulted in decreased cytolytic activity, and loss of PTEN in CD56(bright) NK cells resulted in elevated cytolytic activity. Comparable studies in mice showed PTEN overexpression did not alter NK cell development or NK cell-activating and inhibitory receptor expression yet, as in humans, did decrease expression of downstream NK activation targets MAPK and AKT during early cytolysis of tumor target cells. Confocal microscopy revealed that PTEN overexpression disrupts the NK cell's ability to organize immunological synapse components including decreases in actin accumulation, polarization of the microtubule organizing center, and the convergence of cytolytic granules. In summary, our data suggest that PTEN normally works to limit the NK cell's PI3K/AKT and MAPK pathway activation and the consequent mobilization of cytolytic mediators toward the target cell and suggest that PTEN is among the active regulatory components prior to human NK cells transitioning from the noncytolytic CD56(bright) NK cell to the cytolytic CD56(dim) NK cells.
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Affiliation(s)
- Edward L. Briercheck
- Medical Scientist Training Program and Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH 43210
| | - Rossana Trotta
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
- Department of Microbiology and Immunology and Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Li Chen
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
| | - Alex S. Hartlage
- Medical Scientist Training Program and Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH 43210
| | - Jordan P. Cole
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
| | - Tyler D. Cole
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
| | - Charlene Mao
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
| | - Pinaki P. Banerjee
- Center for Human Immunobiology, Baylor College of Medicine Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030
- Department of Pediatrics, Baylor College of Medicine Texas Children’s Hospital, Houston, TX 77030
| | - Hsiang-Ting Hsu
- Center for Human Immunobiology, Baylor College of Medicine Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030
| | - Emily M. Mace
- Center for Human Immunobiology, Baylor College of Medicine Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030
| | - David Ciarlariello
- The Molecular, Cellular, and Developmental Biology Program, The Ohio State University, Columbus, OH 43210
| | - Bethany L. Mundy-Bosse
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
| | - Isabel Garcia-Cao
- Cancer Genetics Program, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Steven D. Scoville
- Medical Scientist Training Program and Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH 43210
| | - Lianbo Yu
- Center for Biostatistics, The Ohio State University, Columbus, OH 43210
| | - Robert Pilarski
- Division of Human Genetics, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210
| | - William E. Carson
- Medical Scientist Training Program and Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH 43210
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
- Department of Surgery, The Ohio State University, Columbus, OH 43210
| | - Gustavo Leone
- Medical Scientist Training Program and Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH 43210
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
- Department of Molecular Genetics, The Ohio State University, Columbus, OH 43210
- Department of Molecular Virology, Immunology, and Medical Genetics, The Ohio State University, Columbus, OH 43210; and
| | - Pier Paolo Pandolfi
- The Molecular, Cellular, and Developmental Biology Program, The Ohio State University, Columbus, OH 43210
- Cancer Genetics Program, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Jianhua Yu
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210
| | - Jordan S. Orange
- Center for Human Immunobiology, Baylor College of Medicine Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030
- Department of Pediatrics, Baylor College of Medicine Texas Children’s Hospital, Houston, TX 77030
| | - Michael A. Caligiuri
- Medical Scientist Training Program and Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH 43210
- The Comprehensive Cancer Center and Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH 43210
- Department of Molecular Virology, Immunology, and Medical Genetics, The Ohio State University, Columbus, OH 43210; and
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210
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30
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Abstract
Natural killer (NK) cells are effector cells of the innate immune system that can lyse target cells without prior sensitization and have an important role in host defense to pathogens and transformed cells. A balance between negative and positive signals transmitted via germ line-encoded inhibitory and activating receptors controls the function of NK cells. Although the concept of "missing-self" would suggest that NK cells could target foreign allografts, the prevailing dogma has been that NK cells are not active participants in the mechanisms that culminate in the rejection of solid organ allografts. Recent studies, however, challenge this conclusion and instead implicate NK cells in contributing to both graft rejection and tolerance to an allograft. In this review, we highlight recent studies with the goal of understanding the complex NK cell interactions that impact alloimmunity.
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Affiliation(s)
- Uzi Hadad
- Division of Abdominal Transplantation, Department of Surgery and Stanford Immunology, Stanford University School of Medicine, Stanford, CA, USA
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31
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Braun CJ, Boztug K, Paruzynski A, Witzel M, Schwarzer A, Rothe M, Modlich U, Beier R, Göhring G, Steinemann D, Fronza R, Ball CR, Haemmerle R, Naundorf S, Kühlcke K, Rose M, Fraser C, Mathias L, Ferrari R, Abboud MR, Al-Herz W, Kondratenko I, Maródi L, Glimm H, Schlegelberger B, Schambach A, Albert MH, Schmidt M, von Kalle C, Klein C. Gene therapy for Wiskott-Aldrich syndrome--long-term efficacy and genotoxicity. Sci Transl Med 2014; 6:227ra33. [PMID: 24622513 DOI: 10.1126/scitranslmed.3007280] [Citation(s) in RCA: 388] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Wiskott-Aldrich syndrome (WAS) is characterized by microthrombocytopenia, immunodeficiency, autoimmunity, and susceptibility to malignancies. In our hematopoietic stem cell gene therapy (GT) trial using a γ-retroviral vector, 9 of 10 patients showed sustained engraftment and correction of WAS protein (WASP) expression in lymphoid and myeloid cells and platelets. GT resulted in partial or complete resolution of immunodeficiency, autoimmunity, and bleeding diathesis. Analysis of retroviral insertion sites revealed >140,000 unambiguous integration sites and a polyclonal pattern of hematopoiesis in all patients early after GT. Seven patients developed acute leukemia [one acute myeloid leukemia (AML), four T cell acute lymphoblastic leukemia (T-ALL), and two primary T-ALL with secondary AML associated with a dominant clone with vector integration at the LMO2 (six T-ALL), MDS1 (two AML), or MN1 (one AML) locus]. Cytogenetic analysis revealed additional genetic alterations such as chromosomal translocations. This study shows that hematopoietic stem cell GT for WAS is feasible and effective, but the use of γ-retroviral vectors is associated with a substantial risk of leukemogenesis.
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Affiliation(s)
- Christian Jörg Braun
- Dr. von Hauner Children's Hospital, Ludwig Maximilians University Munich, 80337 Munich, Germany
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32
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Braun CJ, Witzel M, Paruzynski A, Boztug K, von Kalle C, Schmidt M, Klein C. Gene therapy for Wiskott-Aldrich Syndrome-Long-term reconstitution and clinical benefits, but increased risk for leukemogenesis. Rare Dis 2014; 2:e947749. [PMID: 26942098 PMCID: PMC4755244 DOI: 10.4161/21675511.2014.947749] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/06/2014] [Accepted: 07/16/2014] [Indexed: 01/14/2023] Open
Abstract
Wiskott-Aldrich-Syndrome (WAS) is a rare X-linked recessive disease caused by mutations of the WAS gene. It is characterized by immunodeficiency, autoimmunity, low numbers of small platelets (microthrombocytopenia) and a high risk of cancer, especially B cell lymphoma and leukemia.
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Affiliation(s)
- Christian Joerg Braun
- Dr. von Hauner Children's Hospital; Ludwig Maximilians University Munich ; Munich, Germany
| | - Maximilian Witzel
- Dr. von Hauner Children's Hospital; Ludwig Maximilians University Munich ; Munich, Germany
| | - Anna Paruzynski
- Department of Translational Oncology; National Center for Tumor Diseases and German Cancer Research Center; Heidelberg, Germany; New address: BioNTech AG; Mainz, Germany
| | - Kaan Boztug
- Department of Pediatric Hematology/Oncology; Hannover Medical School; Hannover, Germany; Present address: CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences/Department of Pediatrics and Adolescent Medicine, Medical University of Vienna; Vienna, Austria
| | - Christof von Kalle
- Department of Translational Oncology; National Center for Tumor Diseases and German Cancer Research Center ; Heidelberg, Germany
| | - Manfred Schmidt
- Department of Translational Oncology; National Center for Tumor Diseases and German Cancer Research Center ; Heidelberg, Germany
| | - Christoph Klein
- Dr. von Hauner Children's Hospital; Ludwig Maximilians University Munich ; Munich, Germany
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33
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Lagrue K, Carisey A, Oszmiana A, Kennedy PR, Williamson DJ, Cartwright A, Barthen C, Davis DM. The central role of the cytoskeleton in mechanisms and functions of the NK cell immune synapse. Immunol Rev 2014; 256:203-21. [PMID: 24117823 DOI: 10.1111/imr.12107] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Natural killer (NK) cells discriminate between healthy and unhealthy target cells through a balance of activating and inhibitory signals at direct intercellular contacts called immune synapses. Rearrangements in the cellular cytoskeleton have long been known to be critical in assembly of immune synapses. Here, through bringing together the vast literature on this subject, the number of different ways in which the cytoskeleton is important becomes evident. The dynamics of filamentous actin are critical in (i) creating the nanometer-scale organization of NK cell receptors, (ii) establishing cellular polarity, (iii) coordinating immune receptor and integrin-mediated signaling, and (iv) directing secretion of lytic granules and cytokines. The microtubule network also is important in the delivery of lytic granules and vesicles containing cytokines to the immune synapse. Together, these data establish that the cytoskeleton acts as a central regulator of this complex and dynamic process - and an enormous amount of NK cell biology is controlled through the cytoskeleton.
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Affiliation(s)
- Kathryn Lagrue
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, UK; Division of Cell and Molecular Biology, Imperial College, London, UK
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Roybal KT, Sinai P, Verkade P, Murphy RF, Wülfing C. The actin-driven spatiotemporal organization of T-cell signaling at the system scale. Immunol Rev 2014; 256:133-47. [PMID: 24117818 DOI: 10.1111/imr.12103] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
T cells are activated through interaction with antigen-presenting cells (APCs). During activation, receptors and signaling intermediates accumulate in diverse spatiotemporal distributions. These distributions control the probability of signaling interactions and thus govern information flow through the signaling system. Spatiotemporally resolved system-scale investigation of signaling can extract the regulatory information thus encoded, allowing unique insight into the control of T-cell function. Substantial technical challenges exist, and these are briefly discussed herein. While much of the work assessing T-cell spatiotemporal organization uses planar APC substitutes, we focus here on B-cell APCs with often stark differences. Spatiotemporal signaling distributions are driven by cell biologically distinct structures, a large protein assembly at the interface center, a large invagination, the actin-supported interface periphery as extended by smaller individual lamella, and a newly discovered whole-interface actin-driven lamellum. The more than 60 elements of T-cell activation studied to date are dynamically distributed between these structures, generating a complex organization of the signaling system. Signal initiation and core signaling prefer the interface center, while signal amplification is localized in the transient lamellum. Actin dynamics control signaling distributions through regulation of the underlying structures and drive a highly undulating T-cell/APC interface that imposes substantial constraints on T-cell organization. We suggest that the regulation of actin dynamics, by controlling signaling distributions and membrane topology, is an important rheostat of T-cell signaling.
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Affiliation(s)
- Kole T Roybal
- Department of Immunology, UT Southwestern Medical Center, Dallas, TX, USA
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Mace EM, Orange JS. Lytic immune synapse function requires filamentous actin deconstruction by Coronin 1A. Proc Natl Acad Sci U S A 2014; 111:6708-13. [PMID: 24760828 PMCID: PMC4020046 DOI: 10.1073/pnas.1314975111] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Lytic immune effector function depends upon directed secretion of cytolytic granules at the immunological synapse (IS) and requires dynamic rearrangement of filamentous (F)-actin. Coronin 1A (Coro1A) is the hematopoietic-specific member of the Coronin family of actin regulators that promote F-actin disassembly. Here, we show that Coro1A is required for natural killer (NK) cell cytotoxic function in two human NK cell lines and ex vivo cells from a Coro1A-deficient patient. Using superresolution nanoscopy to probe the IS, we demonstrate that Coro1A promotes the deconstruction of F-actin density that facilitates effective delivery of lytic granules to the IS. Thus, we show, for the first time to our knowledge, a critical role for F-actin deconstruction in cytotoxic function and immunological secretion and identify Coro1A as its mediator.
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Affiliation(s)
- Emily M. Mace
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children’s Hospital, Houston, TX 77030
| | - Jordan S. Orange
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children’s Hospital, Houston, TX 77030
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Mace EM, Orange JS. Visualization of the immunological synapse by dual color time-gated stimulated emission depletion (STED) nanoscopy. J Vis Exp 2014:51100. [PMID: 24686478 PMCID: PMC4157735 DOI: 10.3791/51100] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Natural killer cells form tightly regulated, finely tuned immunological synapses (IS) in order to lyse virally infected or tumorigenic cells. Dynamic actin reorganization is critical to the function of NK cells and the formation of the IS. Imaging of F-actin at the synapse has traditionally utilized confocal microscopy, however the diffraction limit of light restricts resolution of fluorescence microscopy, including confocal, to approximately 200 nm. Recent advances in imaging technology have enabled the development of subdiffraction limited super-resolution imaging. In order to visualize F-actin architecture at the IS we recapitulate the NK cell cytotoxic synapse by adhering NK cells to activating receptor on glass. We then image proteins of interest using two-color stimulated emission depletion microscopy (STED). This results in <80 nm resolution at the synapse. Herein we describe the steps of sample preparation and the acquisition of images using dual color STED nanoscopy to visualize F-actin at the NK IS. We also illustrate optimization of sample acquisition using Leica SP8 software and time-gated STED. Finally, we utilize Huygens software for post-processing deconvolution of images.
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Affiliation(s)
- Emily M Mace
- Center for Human Immunobiology, Texas Children's Hospital and Baylor College of Medicine;
| | - Jordan S Orange
- Center for Human Immunobiology, Texas Children's Hospital and Baylor College of Medicine
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Mace EM, Dongre P, Hsu HT, Sinha P, James AM, Mann SS, Forbes LR, Watkin LB, Orange JS. Cell biological steps and checkpoints in accessing NK cell cytotoxicity. Immunol Cell Biol 2014; 92:245-55. [PMID: 24445602 PMCID: PMC3960583 DOI: 10.1038/icb.2013.96] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 11/06/2013] [Indexed: 12/11/2022]
Abstract
Natural killer (NK) cell-mediated cytotoxicity is governed by the formation of a lytic immune synapse in discrete regulated steps, which give rise to an extensive array of cellular checkpoints in accessing NK cell-mediated cytolytic defense. Appropriate progression through these cell biological steps is critical for the directed secretion of specialized secretory lysosomes and subsequent target cell death. Here we highlight recent discoveries in the formation of the NK cell cytolytic synapse as well as the molecular steps and cell biological checkpoints required for this essential host defense process.
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Affiliation(s)
- Emily M Mace
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Prachi Dongre
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Hsiang-Ting Hsu
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Papiya Sinha
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | | | - Shaina S Mann
- Case Western Reserve Medical School, Cleveland, OH, USA
| | - Lisa R Forbes
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Levi B Watkin
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Jordan S Orange
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
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Ham H, Billadeau DD. Human immunodeficiency syndromes affecting human natural killer cell cytolytic activity. Front Immunol 2014; 5:2. [PMID: 24478771 PMCID: PMC3896857 DOI: 10.3389/fimmu.2014.00002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 01/03/2014] [Indexed: 12/30/2022] Open
Abstract
Natural killer (NK) cells are lymphocytes of the innate immune system that secrete cytokines upon activation and mediate the killing of tumor cells and virus-infected cells, especially those that escape the adaptive T cell response caused by the down regulation of MHC-I. The induction of cytotoxicity requires that NK cells contact target cells through adhesion receptors, and initiate activation signaling leading to increased adhesion and accumulation of F-actin at the NK cell cytotoxic synapse. Concurrently, lytic granules undergo minus-end directed movement and accumulate at the microtubule-organizing center through the interaction with microtubule motor proteins, followed by polarization of the lethal cargo toward the target cell. Ultimately, myosin-dependent movement of the lytic granules toward the NK cell plasma membrane through F-actin channels, along with soluble N-ethylmaleimide-sensitive factor attachment protein receptor-dependent fusion, promotes the release of the lytic granule contents into the cleft between the NK cell and target cell resulting in target cell killing. Herein, we will discuss several disease-causing mutations in primary immunodeficiency syndromes and how they impact NK cell-mediated killing by disrupting distinct steps of this tightly regulated process.
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Affiliation(s)
- Hyoungjun Ham
- Department of Immunology, College of Medicine, Mayo Clinic , Rochester, MN , USA
| | - Daniel D Billadeau
- Department of Immunology, College of Medicine, Mayo Clinic , Rochester, MN , USA ; Division of Oncology Research and Schulze Center for Novel Therapeutics, College of Medicine, Mayo Clinic , Rochester, MN , USA
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Galandrini R, Capuano C, Santoni A. Activation of Lymphocyte Cytolytic Machinery: Where are We? Front Immunol 2013; 4:390. [PMID: 24312097 PMCID: PMC3832890 DOI: 10.3389/fimmu.2013.00390] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 11/06/2013] [Indexed: 11/13/2022] Open
Abstract
Target cell recognition by cytotoxic lymphocytes implies the simultaneous engagement and clustering of adhesion and activating receptors followed by the activation of an array of signal transduction pathways. The cytotoxic immune synapse represents the highly specialized dynamic interface formed between the cytolytic effector and its target that allows temporal and spatial integration of signals responsible for a defined sequence of processes culminating with the polarized secretion of lytic granules. Over the last decades, much attention has been given to the molecular signals coupling receptor ligation to the activation of cytolytic machinery. Moreover, in the last 10 years the discovery of genetic defects affecting cytotoxic responses greatly boosted our knowledge on the molecular effectors involved in the regulation of discrete phases of cytotoxic process at post-receptor levels. More recently, the use of super resolution and total internal reflection fluorescence imaging technologies added new insights on the dynamic reorganization of receptor and signaling molecules at lytic synapse as well as on the relationship between granule dynamics and cytoskeleton remodeling. To date we have a solid knowledge of the molecular mechanisms governing granule movement and secretion, being not yet fully unraveled the machinery that couples early receptor signaling to the late stage of synapse remodeling and granule dynamics. Here we highlight recent advances in our understanding of the molecular mechanisms acting in the activation of cytolytic machinery, also discussing similarities and differences between Natural killer cells and cytotoxic CD8+ T cells.
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Affiliation(s)
- Ricciarda Galandrini
- Department of Experimental Medicine, Istituto Pasteur-Fondazione Cenci-Bolognetti, Fondazione Eleonora Lorillard Spencer Cenci, Sapienza University , Rome , Italy
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Voigt J, Hünniger K, Bouzani M, Jacobsen ID, Barz D, Hube B, Löffler J, Kurzai O. Human natural killer cells acting as phagocytes against Candida albicans and mounting an inflammatory response that modulates neutrophil antifungal activity. J Infect Dis 2013; 209:616-26. [PMID: 24163416 DOI: 10.1093/infdis/jit574] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Natural killer (NK) cells are innate lymphocytes with potent cytotoxic activity. Whereas activity of NK cells has been demonstrated against the fungal pathogens Aspergillus fumigatus and Cryptococcus neoformans, little was known about their interaction with Candida albicans. METHODS Primary human NK cells were isolated from buffy coats, primed with a cytokine cocktail and used for confrontation assays with C. albicans. Interaction was monitored and quantified using live cell imaging, confocal microscopy, flow cytometry, and enzyme-linked immunosorbent assay. RESULTS Human NK cells actively recognized C. albicans, resulting in degranulation and secretion of granulocyte-macrophage colony-stimulating factor, interferon γ, and tumor necrosis factor α . Uniquely, activation of NK cells was triggered by actin-dependent phagocytosis. Antifungal activity of NK cells against C. albicans could be detected and mainly attributed to secreted perforin. However, NK cells were unable to inhibit filamentation of C. albicans. Human polymorphonuclear neutrophils (PMNs) counteracted the proinflammatory reaction of NK cells by preventing direct contact between NK cells and the fungal pathogen. Activation of PMNs was enhanced in the presence of NK cells, resulting in increased fungicidal activity. CONCLUSIONS Our results show a unique pattern of NK cell interaction with C. albicans, which involves direct proinflammatory activation and modulation of PMN activity. For the first time, phagocytosis of a pathogen is shown to contribute to NK cell activation.
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Affiliation(s)
- Jessica Voigt
- Septomics Research Centre, Friedrich Schiller University and Leibniz Institute for Natural Product Research and Infection Biology-Hans Knoell Institute
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Matalon O, Reicher B, Barda-Saad M. Wiskott-Aldrich syndrome protein - dynamic regulation of actin homeostasis: from activation through function and signal termination in T lymphocytes. Immunol Rev 2013; 256:10-29. [DOI: 10.1111/imr.12112] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Omri Matalon
- The Mina and Everard Goodman Faculty of Life Sciences; Bar-Ilan University; Ramat-Gan Israel
| | - Barak Reicher
- The Mina and Everard Goodman Faculty of Life Sciences; Bar-Ilan University; Ramat-Gan Israel
| | - Mira Barda-Saad
- The Mina and Everard Goodman Faculty of Life Sciences; Bar-Ilan University; Ramat-Gan Israel
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Loss of the F-BAR protein CIP4 reduces platelet production by impairing membrane-cytoskeleton remodeling. Blood 2013; 122:1695-706. [PMID: 23881916 DOI: 10.1182/blood-2013-03-484550] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Megakaryocytes generate platelets through extensive reorganization of the cytoskeleton and plasma membrane. Cdc42 interacting protein 4 (CIP4) is an F-BAR protein that localizes to membrane phospholipids through its BAR domain and interacts with Wiskott-Aldrich Syndrome Protein (WASP) via its SRC homology 3 domain. F-BAR proteins promote actin polymerization and membrane tubulation. To study its function, we generated CIP4-null mice that displayed thrombocytopenia similar to that of WAS(-) mice. The number of megakaryocytes and their progenitors was not affected. However, the number of proplatelet protrusions was reduced in CIP4-null, but not WAS(-), megakaryocytes. Electron micrographs of CIP4-null megakaryocytes showed an altered demarcation membrane system. Silencing of CIP4, not WASP, expression resulted in fewer proplatelet-like extensions. Fluorescence anisotropy studies showed that loss of CIP4 resulted in a more rigid membrane. Micropipette aspiration demonstrated decreased cortical actin tension in megakaryocytic cells with reduced CIP4 or WASP protein. These studies support a new biophysical mechanism for platelet biogenesis whereby CIP4 enhances the complex, dynamic reorganization of the plasma membrane (WASP independent) and actin cortex network (as known for WASP and cortical actin) to reduce the work required for generating proplatelets. CIP4 is a new component in the highly coordinated system of megakaryocytic membrane and cytoskeletal remodeling affecting platelet production.
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James AM, Hsu HT, Dongre P, Uzel G, Mace EM, Banerjee PP, Orange JS. Rapid activation receptor- or IL-2-induced lytic granule convergence in human natural killer cells requires Src, but not downstream signaling. Blood 2013; 121:2627-37. [PMID: 23380740 PMCID: PMC3617630 DOI: 10.1182/blood-2012-06-437012] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 01/20/2013] [Indexed: 12/20/2022] Open
Abstract
Natural killer (NK) cells participate in host defense by surveying for and ultimately killing virally infected or malignant target cells. NK cell cytotoxicity is a tightly regulated process that proceeds stepwise from adhesion and activation to the secretion of preformed lytic granule contents onto a diseased or stressed cell. We previously characterized rapid dynein-dependent lytic granule convergence to the microtubule-organizing center (MTOC) as an early, prerequisite step in NK cell cytotoxicity. Although multiple activating receptors can trigger granule convergence, the specific signal or signals responsible remained unknown. Using live cell confocal microscopy, NK cell lytic granule movement after NK cell activation was captured and measured. Using inhibitors of common early signaling mediators, we show that Src kinases are required for lytic granule convergence, but downstream signals that promote actin rearrangement, MTOC polarization, and calcium mobilization are not. Exposure to interleukin 2 was also sufficient to induce lytic granule convergence, which required noncanonical Src-dependent signaling. Thus, NK cell lytic granule convergence, prompted by specific receptor-mediated and soluble cytokine signals, depends on a directly downstream early Src kinase-dependent signal and emphasizes the importance of this step in readying NK cells for cytotoxicity.
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Affiliation(s)
- Ashley Mentlik James
- Graduate Program in Cell Biology and Physiology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
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Massaad MJ, Ramesh N, Geha RS. Wiskott-Aldrich syndrome: a comprehensive review. Ann N Y Acad Sci 2013; 1285:26-43. [DOI: 10.1111/nyas.12049] [Citation(s) in RCA: 229] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Michel J. Massaad
- Division of Immunology, Boston Children's Hospital, and Department of Pediatrics; Harvard Medical School; Boston; Massachusetts
| | - Narayanaswamy Ramesh
- Division of Immunology, Boston Children's Hospital, and Department of Pediatrics; Harvard Medical School; Boston; Massachusetts
| | - Raif S. Geha
- Division of Immunology, Boston Children's Hospital, and Department of Pediatrics; Harvard Medical School; Boston; Massachusetts
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Ham H, Guerrier S, Kim J, Schoon RA, Anderson EL, Hamann MJ, Lou Z, Billadeau DD. Dedicator of cytokinesis 8 interacts with talin and Wiskott-Aldrich syndrome protein to regulate NK cell cytotoxicity. THE JOURNAL OF IMMUNOLOGY 2013; 190:3661-9. [PMID: 23455509 DOI: 10.4049/jimmunol.1202792] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Recently, patients with mutations in DOCK8 have been reported to have a combined immunodeficiency characterized by cutaneous viral infections and allergies. NK cells represent a first-line defense against viral infections, suggesting that DOCK8 might participate in NK cell function. In this study, we demonstrate that DOCK8-suppressed human NK cells showed defects in natural cytotoxicity as well as specific activating receptor-mediated NK cytotoxicity. Additionally, compared with control NK cells, NK cells depleted of DOCK8 showed defective conjugate formation, along with decreased polarization of LFA-1, F-actin, and cytolytic granules toward the cytotoxic synapse. Using a proteomic approach, we found that DOCK8 exists in a macromolecular complex with the Wiskott-Aldrich syndrome protein, an actin nucleation-promoting factor activated by CDC42, as well as talin, which is required for integrin-mediated adhesion. Taken together, our results demonstrate an important role for DOCK8 in NK cell effector function and provide important new mechanistic insight into how DOCK8 regulates F-actin and integrin-mediated adhesion in immune cells.
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Affiliation(s)
- Hyoungjun Ham
- Department of Immunology, College of Medicine, Mayo Clinic, Rochester, MN 55905, USA
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46
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Mizesko MC, Banerjee PP, Monaco-Shawver L, Mace EM, Bernal WE, Sawalle-Belohradsky J, Belohradsky BH, Heinz V, Freeman AF, Sullivan KE, Holland SM, Torgerson TR, Al-Herz W, Chou J, Hanson IC, Albert MH, Geha RS, Renner ED, Orange JS. Defective actin accumulation impairs human natural killer cell function in patients with dedicator of cytokinesis 8 deficiency. J Allergy Clin Immunol 2013; 131:840-8. [PMID: 23380217 PMCID: PMC3646579 DOI: 10.1016/j.jaci.2012.12.1568] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/21/2012] [Accepted: 12/27/2012] [Indexed: 11/23/2022]
Abstract
BACKGROUND Dedicator of cytokinesis 8 (DOCK8) mutations are responsible for a rare primary combined immunodeficiency syndrome associated with severe cutaneous viral infections, increased IgE levels, autoimmunity, and malignancy. Natural killer (NK) cells are essential for tumor surveillance and defense against virally infected cells. NK cell function relies on Wiskott-Aldrich syndrome protein for filamentous actin (F-actin) accumulation at the lytic NK cell immunologic synapse. DOCK8 activates cell division cycle 42, which, together with Wiskott-Aldrich syndrome protein, coordinates F-actin reorganization. Although abnormalities in T- and B-cell function have been described in DOCK8-deficient patients, the role of NK cells in this disease is unclear. OBJECTIVES We sought to understand the role of DOCK8 in NK cell function to determine whether NK cell abnormalities explain the pathogenesis of the clinical syndrome of DOCK8 deficiency. METHODS A cohort of DOCK8-deficient patients was assembled, and patients' NK cells, as well as NK cell lines with stably reduced DOCK8 expression, were studied. NK cell cytotoxicity, F-actin content, and lytic immunologic synapse formation were measured. RESULTS DOCK8-deficient patients' NK cells and DOCK8 knockdown cell lines all had decreased NK cell cytotoxicity, which could not be restored after IL-2 stimulation. Importantly, DOCK8 deficiency impaired F-actin accumulation at the lytic immunologic synapse without affecting overall NK cell F-actin content. CONCLUSIONS DOCK8 deficiency results in severely impaired NK cell function because of an inability to form a mature lytic immunologic synapse through targeted synaptic F-actin accumulation. This defect might underlie and explain important attributes of the DOCK8 deficiency clinical syndrome, including the unusual susceptibility to viral infection and malignancy.
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Affiliation(s)
- Melissa C. Mizesko
- Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Hospital, Houston, TX, USA
| | - Pinaki P. Banerjee
- Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Hospital, Houston, TX, USA
| | | | - Emily M. Mace
- Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Hospital, Houston, TX, USA
| | - William E. Bernal
- Children’s Hospital of Philadelphia Research Institute, Philadelphia, PA, USA
| | | | | | - Valerie Heinz
- University Children’s Hospital, Ludwig Maximilian University, Munich, Germany
| | - Alexandra F. Freeman
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | | | - Steven M. Holland
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Troy R. Torgerson
- University of Washington and Seattle Children’s Hospital, Seattle, WA, USA
| | - Waleed Al-Herz
- Pediatrics Department, Faculty of Medicine, Kuwait University, Kuwait
| | - Janet Chou
- Boston Children’s Hospital, Boston, MA, USA
| | - Imelda C. Hanson
- Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Hospital, Houston, TX, USA
| | - Michael H. Albert
- University Children’s Hospital, Ludwig Maximilian University, Munich, Germany
| | | | - Ellen D. Renner
- University Children’s Hospital, Ludwig Maximilian University, Munich, Germany
| | - Jordan S. Orange
- Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Hospital, Houston, TX, USA
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Chen Y, Aardema J, Corey SJ. Biochemical and functional significance of F-BAR domain proteins interaction with WASP/N-WASP. Semin Cell Dev Biol 2013; 24:280-6. [PMID: 23384583 DOI: 10.1016/j.semcdb.2013.01.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Accepted: 01/16/2013] [Indexed: 01/17/2023]
Abstract
The Bin-Amphiphysin-Rvs (BAR) domain family of proteins includes groups which promote positive (classical BAR, N-BAR, and F-BAR) and negative (I-BAR) membrane deformation. Of these groups, the F-BAR subfamily is the most diverse in its biochemical properties. F-BAR domain proteins dimerize to form a tight scaffold about the membrane. The F-BAR domain provides a banana-shaped, alpha-helical structure that senses membrane curvature. Different types of F-BAR domain proteins contain tyrosine kinase or GTPase activities; some interact with phosphatases and RhoGTPases. Most possess an SH3 domain that facilitates the recruitment and activation of WASP/N-WASP. Thus, F-BAR domain proteins affect remodeling of both membrane and the actin cytoskeleton. The purpose of this review is to highlight the role of F-BAR proteins in coupling WASP/N-WASP to cytoskeletal remodeling. A role for F-BAR/WASP interaction in human diseases affecting nervous, blood, and neoplastic tissues is discussed.
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Affiliation(s)
- Yolande Chen
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, United States
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48
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Long EO, Kim HS, Liu D, Peterson ME, Rajagopalan S. Controlling natural killer cell responses: integration of signals for activation and inhibition. Annu Rev Immunol 2013; 31:227-58. [PMID: 23516982 PMCID: PMC3868343 DOI: 10.1146/annurev-immunol-020711-075005] [Citation(s) in RCA: 885] [Impact Index Per Article: 80.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Understanding how signals are integrated to control natural killer (NK) cell responsiveness in the absence of antigen-specific receptors has been a challenge, but recent work has revealed some underlying principles that govern NK cell responses. NK cells use an array of innate receptors to sense their environment and respond to alterations caused by infections, cellular stress, and transformation. No single activation receptor dominates; instead, synergistic signals from combinations of receptors are integrated to activate natural cytotoxicity and cytokine production. Inhibitory receptors for major histocompatibility complex class I (MHC-I) have a critical role in controlling NK cell responses and, paradoxically, in maintaining NK cells in a state of responsiveness to subsequent activation events, a process referred to as licensing. MHC-I-specific inhibitory receptors both block activation signals and trigger signals to phosphorylate and inactivate the small adaptor Crk. These different facets of inhibitory signaling are incorporated into a revocable license model for the reversible tuning of NK cell responsiveness.
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Affiliation(s)
- Eric O. Long
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852
| | - Hun Sik Kim
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852
- Department of Medicine, Graduate School, University of Ulsan, Seoul 138-736, Korea;
| | - Dongfang Liu
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852
- Center for Human Immunobiology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas 77030;
| | - Mary E. Peterson
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852
| | - Sumati Rajagopalan
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852
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49
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Mace EM, Wu WW, Ho T, Mann SS, Hsu HT, Orange JS. NK cell lytic granules are highly motile at the immunological synapse and require F-actin for post-degranulation persistence. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2012; 189:4870-80. [PMID: 23066148 PMCID: PMC3558996 DOI: 10.4049/jimmunol.1201296] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The formation of a dynamic, actin-rich immunological synapse (IS) and the polarization of cytolytic granules toward target cells are essential to the cytotoxic function of NK cells. Following polarization, lytic granules navigate through the pervasive actin network at the IS to degranulate and secrete their toxic contents onto target cells. We examined lytic granule motility and persistence at the cell cortex of activated human NK cells, using high-resolution total internal reflection microscopy and highly quantitative analysis techniques. We illustrate that lytic granules are dynamic and observe substantial motility at the plane of the cell cortex prior to, but not after, degranulation. We also show that there is no significant change in granule motility in the presence of Latrunculin A (which induces actin depolymerization), when added after granule polarization, but that there is a significant decrease in lytic granule persistence subsequent to degranulation. Thus, we show that lytic granules are highly dynamic at the cytolytic human NK cell IS prior to degranulation and that the persistence of granules at the cortex following exocytosis requires the integrity of the synaptic actin network.
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Affiliation(s)
- Emily M. Mace
- Baylor College of Medicine, Houston, Texas, United States of America
| | - Winona W. Wu
- University of Pennsylvania College of Arts and Science, Philadelphia, Pennsylvania, United States of America
| | - Tina Ho
- University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Shaina S. Mann
- University of Pennsylvania College of Arts and Science, Philadelphia, Pennsylvania, United States of America
| | - Hsiang-Ting Hsu
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, USA
| | - Jordan S. Orange
- Baylor College of Medicine, Houston, Texas, United States of America
- Texas Children’s Hospital, Houston, Texas, United States of America
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Krzewski K, Coligan JE. Human NK cell lytic granules and regulation of their exocytosis. Front Immunol 2012; 3:335. [PMID: 23162553 PMCID: PMC3494098 DOI: 10.3389/fimmu.2012.00335] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 10/22/2012] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells form a subset of lymphocytes that play a key role in immuno-surveillance and host defense against cancer and viral infections. They recognize stressed cells through a variety of germline-encoded activating cell surface receptors and utilize their cytotoxic ability to eliminate abnormal cells. Killing of target cells is a complex, multi-stage process that concludes in the directed secretion of lytic granules, containing perforin and granzymes, at the immunological synapse. Upon delivery to a target cell, perforin mediates generation of pores in membranes of target cells, allowing granzymes to access target cell cytoplasm and induce apoptosis. Therefore, lytic granules of NK cells are indispensable for normal NK cell cytolytic function. Indeed, defects in lytic granule secretion lead or are related to serious and often fatal diseases, such as familial hemophagocytic lymphohistiocytosis (FHL) type 2–5 or Griscelli syndrome type 2. A number of reports highlight the role of several proteins involved in lytic granule release and NK cell-mediated killing of tumor cells. This review focuses on lytic granules of human NK cells and the advancements in understanding the mechanisms controlling their exocytosis.
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Affiliation(s)
- Konrad Krzewski
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health Rockville, MD, USA
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