1
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Merchand-Reyes G, Santhanam R, Robledo-Avila FH, Weigel C, Ruiz-Rosado JDD, Mo X, Partida-Sánchez S, Woyach JA, Oakes CC, Tridandapani S, Butchar JP. Disruption of Nurse-like Cell Differentiation as a Therapeutic Strategy for Chronic Lymphocytic Leukemia. J Immunol 2022; 209:1212-1223. [PMID: 35995507 PMCID: PMC9492647 DOI: 10.4049/jimmunol.2100931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 07/11/2022] [Indexed: 01/04/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is the most common adult leukemia, but, despite advances in treatment, many patients still experience relapse. CLL cells depend on interactions with supportive cells, and nurse-like cells (NLCs) are the major such cell type. However, little is known about how NLCs develop. Here, we performed DNA methylation analysis of CLL patient-derived NLCs using the 850K Illumina array, comparing CD14+ cells at day 1 (monocytes) versus day 14 (NLCs). We found a strong loss of methylation in AP-1 transcription factor binding sites, which may be driven by MAPK signaling. Testing of individual MAPK pathways (MEK, p38, and JNK) revealed a strong dependence on MEK/ERK for NLC development, because treatment of patient samples with the MEK inhibitor trametinib dramatically reduced NLC development in vitro. Using the adoptive transfer Eµ-TCL1 mouse model of CLL, we found that MEK inhibition slowed CLL progression, leading to lower WBC counts and to significantly longer survival time. There were also lower numbers of mouse macrophages, particularly within the M2-like population. In summary, NLC development depends on MEK signaling, and inhibition of MEK leads to increased survival time in vivo. Hence, targeting the MEK/ERK pathway may be an effective treatment strategy for CLL.
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Affiliation(s)
| | - Ramasamy Santhanam
- Division of Hematology, The Ohio State University College of Medicine, Columbus, OH
| | | | - Christoph Weigel
- Division of Hematology, The Ohio State University College of Medicine, Columbus, OH
| | | | - Xiaokui Mo
- Center for Biostatistics, The Ohio State University College of Medicine, Columbus, OH
| | | | - Jennifer A Woyach
- Division of Hematology, The Ohio State University College of Medicine, Columbus, OH
| | - Christopher C Oakes
- Division of Hematology, The Ohio State University College of Medicine, Columbus, OH
| | | | - Jonathan P Butchar
- Division of Hematology, The Ohio State University College of Medicine, Columbus, OH;
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2
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Eltobgy MM, Zani A, Kenney AD, Estfanous S, Kim E, Badr A, Carafice C, Daily K, Whitham O, Pietrzak M, Webb A, Kawahara J, Eddy AC, Denz P, Lu M, Mahesh KC, Peeples ME, Li J, Zhu J, Que J, Robinson R, Mejia OR, Rayner RE, Hall-Stoodley L, Seveau S, Gavrilin MA, Zhang X, Thomas J, Kohlmeier JE, Suthar MS, Oltz E, Tedeschi A, Robledo-Avila FH, Partida-Sanchez S, Hemann EA, Abdelrazik E, Forero A, Nimjee SM, Boyaka PN, Cormet-Boyaka E, Yount JS, Amer AO. Caspase-4/11 exacerbates disease severity in SARS-CoV-2 infection by promoting inflammation and immunothrombosis. Proc Natl Acad Sci U S A 2022; 119:e2202012119. [PMID: 35588457 PMCID: PMC9173818 DOI: 10.1073/pnas.2202012119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/11/2022] [Indexed: 02/07/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS–CoV-2) is a worldwide health concern, and new treatment strategies are needed. Targeting inflammatory innate immunity pathways holds therapeutic promise, but effective molecular targets remain elusive. Here, we show that human caspase-4 (CASP4) and its mouse homolog, caspase-11 (CASP11), are up-regulated in SARS–CoV-2 infections and that CASP4 expression correlates with severity of SARS–CoV-2 infection in humans. SARS–CoV-2–infected Casp11−/− mice were protected from severe weight loss and lung pathology, including blood vessel damage, compared to wild-type (WT) mice and mice lacking the caspase downstream effector gasdermin-D (Gsdmd−/−). Notably, viral titers were similar regardless of CASP11 knockout. Global transcriptomics of SARS–CoV-2–infected WT, Casp11−/−, and Gsdmd−/− lungs identified restrained expression of inflammatory molecules and altered neutrophil gene signatures in Casp11−/− mice. We confirmed that protein levels of inflammatory mediators interleukin (IL)-1β, IL-6, and CXCL1, as well as neutrophil functions, were reduced in Casp11−/− lungs. Additionally, Casp11−/− lungs accumulated less von Willebrand factor, a marker for endothelial damage, but expressed more Kruppel-Like Factor 2, a transcription factor that maintains vascular integrity. Overall, our results demonstrate that CASP4/11 promotes detrimental SARS–CoV-2–induced inflammation and coagulopathy, largely independently of GSDMD, identifying CASP4/11 as a promising drug target for treatment and prevention of severe COVID-19.
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Affiliation(s)
- Mostafa M. Eltobgy
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Neuroscience graduate program, The Ohio State University, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Ashley Zani
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Adam D. Kenney
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Shady Estfanous
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Faculty of Pharmacy, Helwan University, Cairo,11731 Egypt
| | - Eunsoo Kim
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210
| | - Asmaa Badr
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Cierra Carafice
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Kylene Daily
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Owen Whitham
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Maciej Pietrzak
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH 43210
| | - Amy Webb
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH 43210
| | - Jeffrey Kawahara
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Adrian C. Eddy
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Parker Denz
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Mijia Lu
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210
| | - KC Mahesh
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Center for Vaccines and Immunity, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205
| | - Mark E. Peeples
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Center for Vaccines and Immunity, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205
| | - Jianrong Li
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210
| | - Jian Zhu
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Pathology, The Ohio State University, Columbus, OH 43210
| | - Jianwen Que
- Division of Digestive and Liver Diseases and Center for Human Development, Department of Medicine, Columbia University, New York, NY 10027
| | - Richard Robinson
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Oscar Rosas Mejia
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Rachael E. Rayner
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210
| | - Luanne Hall-Stoodley
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Stephanie Seveau
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Mikhail A. Gavrilin
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Xiaoli Zhang
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH 43210
| | - Jeronay Thomas
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322
| | - Jacob E. Kohlmeier
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322
| | - Mehul S. Suthar
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322
- Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30322
| | - Eugene Oltz
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Andrea Tedeschi
- Department of Neuroscience, Chronic Brain Injury Discovery Theme, The Ohio State University, Columbus, OH 43210
| | - Frank H. Robledo-Avila
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205
| | - Santiago Partida-Sanchez
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205
| | - Emily A. Hemann
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Eman Abdelrazik
- Center for Informatics Science, Nile University, Giza, 12525, Egypt
| | - Adriana Forero
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Shahid M. Nimjee
- Department of Neurological Surgery, The Ohio State University, Columbus, OH 43210
| | - Prosper N. Boyaka
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210
| | - Estelle Cormet-Boyaka
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210
| | - Jacob S. Yount
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
| | - Amal O. Amer
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH 43210
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210
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3
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Devaraj A, Novotny LA, Robledo-Avila FH, Buzzo JR, Mashburn-Warren L, Jurcisek JA, Tjokro NO, Partida-Sanchez S, Bakaletz LO, Goodman SD. The extracellular innate-immune effector HMGB1 limits pathogenic bacterial biofilm proliferation. J Clin Invest 2021; 131:e140527. [PMID: 34396989 DOI: 10.1172/jci140527] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/01/2021] [Indexed: 12/11/2022] Open
Abstract
Herein, we describe an extracellular function of the vertebrate high-mobility group box 1 protein (HMGB1) in the proliferation of bacterial biofilms. Within host cells, HMGB1 functions as a DNA architectural protein, similar to the ubiquitous DNABII family of bacterial proteins; despite that, these proteins share no amino acid sequence identity. Extracellularly, HMGB1 induces a proinflammatory immune response, whereas the DNABII proteins stabilize the extracellular DNA-dependent matrix that maintains bacterial biofilms. We showed that when both proteins converged on extracellular DNA within bacterial biofilms, HMGB1, unlike the DNABII proteins, disrupted biofilms both in vitro (including the high-priority ESKAPEE pathogens) and in vivo in 2 distinct animal models, albeit with induction of a strong inflammatory response that we attenuated by a single engineered amino acid change. We propose a model where extracellular HMGB1 balances the degree of induced inflammation and biofilm containment without excessive release of biofilm-resident bacteria.
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Affiliation(s)
- Aishwarya Devaraj
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Laura A Novotny
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Frank H Robledo-Avila
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - John R Buzzo
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Lauren Mashburn-Warren
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Joseph A Jurcisek
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Natalia O Tjokro
- Division of Periodontology, Diagnostic Sciences, and Dental Hygiene, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California, USA
| | - Santiago Partida-Sanchez
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA.,Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
| | - Lauren O Bakaletz
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA.,Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
| | - Steven D Goodman
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA.,Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
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4
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Robledo-Avila FH, Ruiz-Rosado JDD, Partida-Sanchez S, Brockman KL. A Bacterial Epigenetic Switch in Non-typeable Haemophilus influenzae Modifies Host Immune Response During Otitis Media. Front Cell Infect Microbiol 2020; 10:512743. [PMID: 33194779 PMCID: PMC7644868 DOI: 10.3389/fcimb.2020.512743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 09/15/2020] [Indexed: 01/15/2023] Open
Abstract
Non-typeable Haemophilus influenzae (NTHi) causes multiple diseases of the human airway and is a predominant bacterial pathogen of acute otitis media and otitis media in which treatment fails. NTHi utilizes a system of phase variable epigenetic regulation, termed the phasevarion, to facilitate adaptation and survival within multiple sites of the human host. The NTHi phasevarion influences numerous disease-relevant phenotypes such as biofilm formation, antibiotic resistance, and opsonization. We have previously identified an advantageous selection for a specific phasevarion status, which significantly affects severity and chronicity of experimental otitis media. In this study, we utilized pure cultures of NTHi variants in which modA was either locked ON or locked OFF, and thus modA was unable to phase vary. These locked variants were used to assess the progression of experimental otitis media and define the specific immune response induced by each subpopulation. Although the initial disease caused by each subpopulation was similar, the immune response elicited by each subpopulation was unique. The modA2 OFF variant induced significantly greater activation of macrophages both in vitro and within the middle ear during disease. In contrast, the modA2 ON variant induced a greater neutrophil extracellular trap response, which led to greater killing of the modA2 ON variant. These data suggest that not only does the NTHi phasevarion facilitate adaptation, but also allows the bacteria to alter immune responses during disease. Understanding these complex bacterial-host interactions and the regulation of bacterial factors responsible is critical to the development of better diagnostic, treatment, and preventative strategies for these bacterial pathogens.
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Affiliation(s)
- Frank H Robledo-Avila
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States
| | - Juan de Dios Ruiz-Rosado
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.,Department of Biochemistry and Immunology, National Technological Institute of Oaxaca, Oaxaca, Mexico
| | - Santiago Partida-Sanchez
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.,Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Kenneth L Brockman
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.,Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, OH, United States.,Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, United States
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5
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Yang C, Ruiz-Rosado JDD, Robledo-Avila FH, Li Z, Jennings RN, Partida-Sanchez S, Montgomery CP. Antibody-Mediated Protection against Staphylococcus aureus Dermonecrosis: Synergy of Toxin Neutralization and Neutrophil Recruitment. J Invest Dermatol 2020; 141:810-820.e8. [PMID: 32946878 DOI: 10.1016/j.jid.2020.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 01/25/2023]
Abstract
The staphylococcal α-hemolysin is critical for the pathogenesis of Staphylococcus aureus skin and soft tissue infection. Vaccine and infection-elicited α-hemolysin-specific antibodies protect against S. aureus‒induced dermonecrosis, a key feature of skin and soft tissue infection. Many interactions between α-hemolysin and host cells have been identified that promote tissue damage and modulate immune responses, but the mechanisms by which protective adaptive responses cross talk with innate responses at the tissue level are not clear. Using an established mouse model of skin and soft tissue infection and a newly developed histopathologic scoring system, we observed pathologic correlates early after infection, predicting protection against dermonecrosis by anti-α-hemolysin antibody. Protection was characterized by robust neutrophilic inflammation and compartmentalization of bacteria into discrete abscesses, which led to the attenuation of dermonecrosis and enhancement of bacterial clearance later in the infection. The ultimate outcome of infection was driven by the recruitment of neutrophils within the first day after infection but not later. Antibody-mediated protection was dependent on toxin neutralization rather than on enhanced opsonophagocytic killing by neutrophils or protection against toxin-mediated neutrophil lysis. Together, these findings advance our understanding of the mechanisms by which the early synergism between antibody-mediated toxin neutralization and tissue-specific neutrophilic inflammation preserve tissue integrity during infection.
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Affiliation(s)
- Ching Yang
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, USA.
| | - Juan de Dios Ruiz-Rosado
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Immunology and Biochemistry, National Technological Institute of Mexico, Oaxaca, Mexico
| | - Frank H Robledo-Avila
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Zhaotao Li
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Ryan N Jennings
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Santiago Partida-Sanchez
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Christopher P Montgomery
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio, USA
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6
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Robledo-Avila FH, Ruiz-Rosado JDD, Brockman KL, Partida-Sánchez S. The TRPM2 Ion Channel Regulates Inflammatory Functions of Neutrophils During Listeria monocytogenes Infection. Front Immunol 2020; 11:97. [PMID: 32117251 PMCID: PMC7010865 DOI: 10.3389/fimmu.2020.00097] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/14/2020] [Indexed: 12/23/2022] Open
Abstract
During infection, phagocytic cells pursue homeostasis in the host via multiple mechanisms that control microbial invasion. Neutrophils respond to infection by exerting a variety of cellular processes, including chemotaxis, activation, phagocytosis, degranulation and the generation of reactive oxygen species (ROS). Calcium (Ca2+) signaling and the activation of specific Ca2+ channels are required for most antimicrobial effector functions of neutrophils. The transient receptor potential melastatin-2 (TRPM2) cation channel has been proposed to play important roles in modulating Ca2+ mobilization and oxidative stress in neutrophils. In the present study, we use a mouse model of Listeria monocytogenes infection to define the role of TRPM2 in the regulation of neutrophils' functions during infection. We show that the susceptibility of Trpm2−/− mice to L. monocytogenes infection is characterized by increased migration rates of neutrophils and monocytes to the liver and spleen in the first 24 h. During the acute phase of L. monocytogenes infection, Trpm2−/− mice developed septic shock, characterized by increased serum levels of TNF-α, IL-6, and IL-10. Furthermore, in vivo depletion of neutrophils demonstrated a critical role of these immune cells in regulating acute inflammation in Trpm2−/− infected mice. Gene expression and inflammatory cytokine analyses of infected tissues further confirmed the hyperinflammatory profile of Trpm2−/− neutrophils. Finally, the increased inflammatory properties of Trpm2−/− neutrophils correlated with the dysregulated cytoplasmic concentration of Ca2+ and potentiated membrane depolarization, in response to L. monocytogenes. In conclusion, our findings suggest that the TRPM2 channel plays critical functional roles in regulating the inflammatory properties of neutrophils and preventing tissue damage during Listeria infection.
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Affiliation(s)
- Frank H Robledo-Avila
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States
| | - Juan de Dios Ruiz-Rosado
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States
| | - Kenneth L Brockman
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.,Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Santiago Partida-Sánchez
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.,Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, OH, United States
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7
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Merchand-Reyes G, Robledo-Avila FH, Buteyn NJ, Gautam S, Santhanam R, Fatehchand K, Mo X, Partida-Sanchez S, Butchar JP, Tridandapani S. CD31 Acts as a Checkpoint Molecule and Is Modulated by FcγR-Mediated Signaling in Monocytes. J Immunol 2019; 203:3216-3224. [PMID: 31732534 DOI: 10.4049/jimmunol.1900059] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 10/05/2019] [Indexed: 12/13/2022]
Abstract
Monocytes and macrophages express FcγR that engage IgG immune complexes such as Ab-opsonized pathogens or cancer cells to destroy them by various mechanisms, including phagocytosis. FcγR-mediated phagocytosis is regulated by the concerted actions of activating FcγR and inhibitory receptors, such as FcγRIIb and SIRPα. In this study, we report that another ITIM-containing receptor, PECAM1/CD31, regulates FcγR function and is itself regulated by FcγR activation. First, quantitative RT-PCR and flow cytometry analyses revealed that human monocyte FcγR activation leads to a significant downregulation of CD31 expression, both at the message level and at surface expression, mainly mediated through FcγRIIa. Interestingly, the kinetics of downregulation between the two varied, with surface expression reducing earlier than the message. Experiments to analyze the mechanism behind this discrepancy revealed that the loss of surface expression was because of internalization, which depended predominantly on the PI3 kinase pathway and was independent of FcγR internalization. Finally, functional analyses showed that the downregulation of CD31 expression in monocytes by small interfering RNA enhanced FcγR-mediated phagocytic ability but have little effect on cytokine production. Together, these results suggest that CD31 acts as a checkpoint receptor that could be targeted to enhance FcγR functions in Ab-mediated therapies.
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Affiliation(s)
- Giovanna Merchand-Reyes
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Frank H Robledo-Avila
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205; and
| | - Nathaniel J Buteyn
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Shalini Gautam
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Ramasamy Santhanam
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Kavin Fatehchand
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Xiaokui Mo
- Center for Biostatistics, Department of Bioinformatics, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Santiago Partida-Sanchez
- Center for Biostatistics, Department of Bioinformatics, The Ohio State University College of Medicine, Columbus, OH 43210
| | - Jonathan P Butchar
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210;
| | - Susheela Tridandapani
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH 43210;
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8
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Robledo-Avila FH, Ruiz-Rosado JDD, Brockman KL, Kopp BT, Amer AO, McCoy K, Bakaletz LO, Partida-Sanchez S. Dysregulated Calcium Homeostasis in Cystic Fibrosis Neutrophils Leads to Deficient Antimicrobial Responses. J Immunol 2018; 201:2016-2027. [PMID: 30120123 DOI: 10.4049/jimmunol.1800076] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 07/23/2018] [Indexed: 12/21/2022]
Abstract
Cystic fibrosis (CF), one of the most common human genetic diseases worldwide, is caused by a defect in the CF transmembrane conductance regulator (CFTR). Patients with CF are highly susceptible to infections caused by opportunistic pathogens (including Burkholderia cenocepacia), which induce excessive lung inflammation and lead to the eventual loss of pulmonary function. Abundant neutrophil recruitment into the lung is a key characteristic of bacterial infections in CF patients. In response to infection, inflammatory neutrophils release reactive oxygen species and toxic proteins, leading to aggravated lung tissue damage in patients with CF. The present study shows a defect in reactive oxygen species production by mouse Cftr-/- , human F508del-CFTR, and CF neutrophils; this results in reduced antimicrobial activity against B. cenocepacia Furthermore, dysregulated Ca2+ homeostasis led to increased intracellular concentrations of Ca2+ that correlated with significantly diminished NADPH oxidase response and impaired secretion of neutrophil extracellular traps in human CF neutrophils. Functionally deficient human CF neutrophils recovered their antimicrobial killing capacity following treatment with pharmacological inhibitors of Ca2+ channels and CFTR channel potentiators. Our findings suggest that regulation of neutrophil Ca2+ homeostasis (via CFTR potentiation or by the regulation of Ca2+ channels) can be used as a new therapeutic approach for reestablishing immune function in patients with CF.
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Affiliation(s)
- Frank H Robledo-Avila
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205
| | - Juan de Dios Ruiz-Rosado
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205
| | - Kenneth L Brockman
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205
| | - Benjamin T Kopp
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205.,Section of Pediatric Pulmonology, Nationwide Children's Hospital, Columbus, OH 43205
| | - Amal O Amer
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH 43210; and
| | - Karen McCoy
- Section of Pediatric Pulmonology, Nationwide Children's Hospital, Columbus, OH 43205.,Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, OH 43210
| | - Lauren O Bakaletz
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205.,Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, OH 43210
| | - Santiago Partida-Sanchez
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205; .,Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, OH 43210
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García-Hernández U, Robledo-Avila FH, Alvarez-Jiménez VD, Rodríguez-Cortés O, Wong-Baeza I, Serafín-López J, Aguilar-Anguiano LM, Estrada-Parra S, Estrada-García I, Pérez-Tapia SM, Chacón-Salinas R. Dialyzable leukocyte extracts activate TLR-2 on monocytes. Nat Prod Commun 2014; 9:853-856. [PMID: 25115098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
Dialyzable leukocyte extracts (DLE) transfer specific cell-mediated immune responses from sensitized donors to non-immune recipients. In addition, DLE have several immunomodulatory effects and are used for the treatment of several infectious and non-infectious diseases. Previous studies showed that human DLE obtained from virus-infected leukocytes and bovine DLE decrease the production of the pro-inflammatory cytokine TNF-alpha in response to bacterial lipopolysaccharide, in vitro and in vivo. In the present work, we inquire as to whether DLE from uninfected human leukocytes have the ability to regulate cytokine production in peripheral blood mononuclear cells (PBMC) in vitro. We observed that PBMC from healthy individuals were able to produce TNF-alpha, IL-12 and IL-10 after stimulation with DLE. Moreover, we identified monocytes as the main cell population that produced TNF-alpha after DLE stimulation. Interestingly, we found that DLE contain unidentified ligands that activate Toll-like receptor (TLR)-2. Finally, we observed that DLE directly activated monocytes through TLR-2. These results reveal a new biological activity of DLE, and suggest that part of the immunomodulatory properties of DLE could be attributed to TLR-2 activation on monocytes and to the induction of a pro-inflammatory environment that is crucial for control of infectious diseases.
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