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Akinsipe T, Mohamedelhassan R, Akinpelu A, Pondugula SR, Mistriotis P, Avila LA, Suryawanshi A. Cellular interactions in tumor microenvironment during breast cancer progression: new frontiers and implications for novel therapeutics. Front Immunol 2024; 15:1302587. [PMID: 38533507 PMCID: PMC10963559 DOI: 10.3389/fimmu.2024.1302587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/16/2024] [Indexed: 03/28/2024] Open
Abstract
The breast cancer tumor microenvironment (TME) is dynamic, with various immune and non-immune cells interacting to regulate tumor progression and anti-tumor immunity. It is now evident that the cells within the TME significantly contribute to breast cancer progression and resistance to various conventional and newly developed anti-tumor therapies. Both immune and non-immune cells in the TME play critical roles in tumor onset, uncontrolled proliferation, metastasis, immune evasion, and resistance to anti-tumor therapies. Consequently, molecular and cellular components of breast TME have emerged as promising therapeutic targets for developing novel treatments. The breast TME primarily comprises cancer cells, stromal cells, vasculature, and infiltrating immune cells. Currently, numerous clinical trials targeting specific TME components of breast cancer are underway. However, the complexity of the TME and its impact on the evasion of anti-tumor immunity necessitate further research to develop novel and improved breast cancer therapies. The multifaceted nature of breast TME cells arises from their phenotypic and functional plasticity, which endows them with both pro and anti-tumor roles during tumor progression. In this review, we discuss current understanding and recent advances in the pro and anti-tumoral functions of TME cells and their implications for developing safe and effective therapies to control breast cancer progress.
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Affiliation(s)
- Tosin Akinsipe
- Department of Biological Sciences, College of Science and Mathematics, Auburn University, Auburn, AL, United States
| | - Rania Mohamedelhassan
- Department of Chemical Engineering, College of Engineering, Auburn University, Auburn, AL, United States
| | - Ayuba Akinpelu
- Department of Anatomy, Physiology, and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Satyanarayana R. Pondugula
- Department of Chemical Engineering, College of Engineering, Auburn University, Auburn, AL, United States
| | - Panagiotis Mistriotis
- Department of Anatomy, Physiology, and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - L. Adriana Avila
- Department of Biological Sciences, College of Science and Mathematics, Auburn University, Auburn, AL, United States
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
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2
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Alrbyawi H, Annaji M, Fasina O, Palakurthi S, Boddu SHS, Hassan N, Tiwari AK, Suryawanshi A, Babu RJ. Rapidly Dissolving Trans-scleral Microneedles for Intraocular Delivery of Cyclosporine A. AAPS PharmSciTech 2024; 25:28. [PMID: 38302687 DOI: 10.1208/s12249-024-02738-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/27/2023] [Indexed: 02/03/2024] Open
Abstract
Cyclosporine A (CsA) is a cyclic peptide immunosuppressant drug that is beneficial in the treatment of various ocular diseases. However, its ocular bioavailability in the posterior eye is limited due to its poor aqueous solubility. Conventional CsA formulations such as a solution or emulsion permeate poorly across the eye due to various static and dynamic barriers of the eye. Dissolvable microneedle (MN)-based patches can be used to overcome barrier properties and, thus, enhance the ocular bioavailability of CsA in the posterior eye. CsA-loaded dissolvable MN patches were fabricated using polyvinylpyrrolidone (PVP) and characterized for MN uniformity and sharpness using SEM. Further characterization for its failure force, penetration force, and depth of penetration were analyzed using a texture analyzer. Finally, the dissolution time, ex vivo permeation, and ocular distribution of cyclosporine were determined in isolated porcine eyes. PVP MNs were sharp, uniform with good mechanical properties, and dissolved within 5 min. Ocular distribution of CsA in a whole porcine eye perfusion model showed a significant increase of CsA levels in various posterior segment ocular tissues as compared to a topically applied ophthalmic emulsion (Restasis®) (P < 0.001). Dissolving MNs of CsA were prepared, and the MN arrays can deliver CsA to the back of the eye offering potential for treating various inflammatory diseases.
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Affiliation(s)
- Hamad Alrbyawi
- Department of Drug Discovery and Development, Auburn University, Auburn, Alabama, USA
- Pharmaceutics and Pharmaceutical Technology Department, College of Pharmacy, Taibah University, Medina, Saudi Arabia
| | - Manjusha Annaji
- Department of Drug Discovery and Development, Auburn University, Auburn, Alabama, USA
| | - Oladiran Fasina
- Department of Biosystems Engineering, Samuel Ginn College of Engineering, Auburn University, Auburn, Alabama, 36849, USA
| | - Srinath Palakurthi
- Department of Pharmaceutical Sciences, Texas A&M University, Kingsville, Texas, USA
| | - Sai H S Boddu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, P.O. Box 346, Ajman, United Arab Emirates
| | - Nageeb Hassan
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, P.O. Box 346, Ajman, United Arab Emirates.
- Department of Clinical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman, United Arab Emirates.
| | - Amit K Tiwari
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas of Medical Sciences, Little Rock, Arkansas, USA
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, 240B Greene Hall, Auburn, Alabama, 36849, USA
| | - R Jayachandra Babu
- Department of Drug Discovery and Development, Auburn University, Auburn, Alabama, USA.
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Antony F, Pundkar C, Sandey M, Mishra A, Suryawanshi A. Role of IL-27 in HSV-1-Induced Herpetic Stromal Keratitis. J Immunol 2023; 211:474-485. [PMID: 37326494 PMCID: PMC10495105 DOI: 10.4049/jimmunol.2200420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 05/31/2023] [Indexed: 06/17/2023]
Abstract
Herpetic stromal keratitis (HSK) is a painful and vision-impairing disease caused by recurrent HSV-1 infection of the cornea. The virus replication in the corneal epithelium and associated inflammation play a dominant role in HSK progression. Current HSK treatments targeting inflammation or virus replication are partially effective and promote HSV-1 latency, and long-term use can cause side effects. Thus, understanding molecular and cellular events that control HSV-1 replication and inflammation is crucial for developing novel HSK therapies. In this study, we report that ocular HSV-1 infection induces the expression of IL-27, a pleiotropic immunoregulatory cytokine. Our data indicate that HSV-1 infection stimulates IL-27 production by macrophages. Using a primary corneal HSV-1 infection mouse model and IL-27 receptor knockout mice, we show that IL-27 plays a critical role in controlling HSV-1 shedding from the cornea, the optimum induction of effector CD4+ T cell responses, and limiting HSK progression. Using in vitro bone marrow-derived macrophages, we show that IL-27 plays an antiviral role by regulating macrophage-mediated HSV-1 killing, IFN-β production, and IFN-stimulated gene expression after HSV-1 infection. Furthermore, we report that IL-27 is critical for macrophage survival, Ag uptake, and the expression of costimulatory molecules involved in the optimum induction of effector T cell responses. Our results indicate that IL-27 promotes endogenous antiviral and anti-inflammatory responses and represents a promising target for suppressing HSK progression.
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Affiliation(s)
- Ferrin Antony
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, AL, 36849, USA
| | - Chetan Pundkar
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, AL, 36849, USA
| | - Maninder Sandey
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, AL, 36849, USA
| | - Amarjit Mishra
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, AL, 36849, USA
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, AL, 36849, USA
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Antony F, Kang X, Pundkar C, Wang C, Mishra A, Chen P, Babu RJ, Suryawanshi A. Targeting β-catenin using XAV939 nanoparticle promotes immunogenic cell death and suppresses conjunctival melanoma progression. Int J Pharm 2023; 640:123043. [PMID: 37172631 PMCID: PMC10399699 DOI: 10.1016/j.ijpharm.2023.123043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/02/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
Many tumors dysregulate Wnt/β-catenin pathway to promote stem-cell-like phenotype, tumorigenesis, immunosuppression, and resistance to targeted cancer immunotherapies. Therefore, targeting this pathway is a promising therapeutic approach to suppress tumor progression and elicit robust anti-tumor immunity. In this study, using a nanoparticle formulation for XAV939 (XAV-Np), a tankyrase inhibitor that promotes β-catenin degradation, we investigated the effect of β-catenin inhibition on melanoma cell viability, migration, and tumor progression using a mouse model of conjunctival melanoma. XAV-Nps were uniform and displayed near-spherical morphology with size stability for upto 5 days. We show that XAV-Np treatment of mouse melanoma cells significantly suppresses cell viability, tumor cell migration, and tumor spheroid formation compared to control nanoparticle (Con-Np) or free XAV939-treated groups. Further, we demonstrate that XAV-Np promotes immunogenic cell death (ICD) of tumor cells with a significant extracellular release or expression of ICD molecules, including high mobility group box 1 protein (HMGB1), calreticulin (CRT), and adenosine triphosphate (ATP). Finally, we show that local intra-tumoral delivery of XAV-Nps during conjunctival melanoma progression significantly suppresses tumor size and conjunctival melanoma progression compared to Con-Nps-treated animals. Collectively, our data suggest that selective inhibition of β-catenin in tumor cells using nanoparticle-based targeted delivery represents a novel approach to suppress tumor progression through increased tumor cell ICD.
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Affiliation(s)
- Ferrin Antony
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Xuejia Kang
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Chetan Pundkar
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Chuanyu Wang
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849, USA
| | - Amarjit Mishra
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Pengyu Chen
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849, USA
| | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA.
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5
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Pundkar C, Antony F, Kang X, Mishra A, Babu RJ, Chen P, Li F, Suryawanshi A. Targeting Wnt/β-catenin signaling using XAV939 nanoparticles in tumor microenvironment-conditioned macrophages promote immunogenicity. Heliyon 2023; 9:e16688. [PMID: 37313143 PMCID: PMC10258387 DOI: 10.1016/j.heliyon.2023.e16688] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/15/2023] Open
Abstract
The aberrant activation of Wnt/β-catenin signaling in tumor cells and immune cells in the tumor microenvironment (TME) promotes malignant transformation, metastasis, immune evasion, and resistance to cancer treatments. The increased Wnt ligand expression in TME activates β-catenin signaling in antigen (Ag)-presenting cells (APCs) and regulates anti-tumor immunity. Previously, we showed that activation of Wnt/β-catenin signaling in dendritic cells (DCs) promotes induction of regulatory T cell responses over anti-tumor CD4+ and CD8+ effector T cell responses and promotes tumor progression. In addition to DCs, tumor-associated macrophages (TAMs) also serve as APCs and regulate anti-tumor immunity. However, the role of β-catenin activation and its effect on TAM immunogenicity in TME is largely undefined. In this study, we investigated whether inhibiting β-catenin in TME-conditioned macrophages promotes immunogenicity. Using nanoparticle formulation of XAV939 (XAV-Np), a tankyrase inhibitor that promotes β-catenin degradation, we performed in vitro macrophage co-culture assays with melanoma cells (MC) or melanoma cell supernatants (MCS) to investigate the effect on macrophage immunogenicity. We show that XAV-Np-treatment of macrophages conditioned with MC or MCS significantly upregulates the cell surface expression of CD80 and CD86 and suppresses the expression of PD-L1 and CD206 compared to MC or MCS-conditioned macrophages treated with control nanoparticle (Con-Np). Further, XAV-Np-treated macrophages conditioned with MC or MCS significantly increased IL-6 and TNF-α production, with reduced IL-10 production compared to Con-Np-treated macrophages. Moreover, the co-culture of MC and XAV-Np-treated macrophages with T cells resulted in increased CD8+ T cell proliferation compared to Con-Np-treated macrophages. These data suggest that targeted β-catenin inhibition in TAMs represents a promising therapeutic approach to promote anti-tumor immunity.
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Affiliation(s)
- Chetan Pundkar
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Ferrin Antony
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Xuejia Kang
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849, USA
| | - Amarjit Mishra
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - R. Jayachandra Babu
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Pengyu Chen
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849, USA
| | - Feng Li
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
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Banerjee B, Kamale C, Suryawanshi A, Mishra A, Gupta R, Noronha S, Bhaumik P. Structural and biochemical studies on a GH5 cellulase from Aspergillus oryzae with β-glucosidase activity. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322093482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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7
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Deshmukh A, Kesari P, Pahelkar N, Suryawanshi A, Rathore I, Mishra V, Dupuis J, Xiao H, Gustchina A, Abendroth J, Labaied M, Yada R, Wlodawer A, Edwards T, Lorimer D, Bhaumik P. Structural insights of plasmepsin X from Plasmodium falciparum uncovering a novel inactivation mechanism of zymogen. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322093470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Prasad P, Mahapatra S, Mishra R, Murmu KC, Aggarwal S, Sethi M, Mohapatra P, Ghosh A, Yadav R, Dodia H, Ansari SA, De S, Singh D, Suryawanshi A, Dash R, Senapati S, Beuria TK, Chattopadhyay S, Syed GH, Swain R, Raghav SK, Parida A. Long-read 16S-seq reveals nasopharynx microbial dysbiosis and enrichment of Mycobacterium and Mycoplasma in COVID-19 patients: a potential source of co-infection. Mol Omics 2022; 18:490-505. [PMID: 35506682 DOI: 10.1039/d2mo00044j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a major global health concern. This virus infects the upper respiratory tract and causes pneumonia-like symptoms. So far, few studies have shown alterations in nasopharyngeal (NP) microbial diversity, enrichment of opportunistic pathogens and their role in co-infections during respiratory infections. Therefore, we hypothesized that microbial diversity changes, with increase in the population of opportunistic pathogens, during SARS-CoV2 infection in the nasopharynx, which may be involved in co-infection in COVID-19 patients. The 16S rRNA variable regions, V1-V9, of NP samples of control and COVID-19 (symptomatic and asymptomatic) patients were sequenced using the Oxford Nanopore™ technology. Comprehensive bioinformatics analysis for determining alpha/beta diversities, non-metric multidimensional scaling, correlation studies, canonical correspondence analysis, linear discriminate analysis, and dysbiosis index were used to analyze the control and COVID-19-specific NP microbiomes. We observed significant dysbiosis in the COVID-19 NP microbiome with an increase in the abundance of opportunistic pathogens at genus and species levels in asymptomatic/symptomatic patients. The significant abundance of Mycobacteria spp. and Mycoplasma spp. in symptomatic patients suggests their association and role in co-infections in COVID-19 patients. Furthermore, we found strong correlation of enrichment of Mycobacteria and Mycoplasma with the occurrences of chest pain and fever in symptomatic COVID-19 patients. This is the first study from India to show the abundance of Mycobacteria and Mycoplasma opportunistic pathogens in non-hospitalized COVID-19 patients and their relationship with symptoms, indicating the possibility of co-infections.
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Affiliation(s)
- Punit Prasad
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | - Soumendu Mahapatra
- Institute of Life Sciences, Bhubaneswar, Odisha, India. .,Kalinga Institute of Industrial Technology (KIIT), School of Biotechnology, Bhubaneswar, Odisha, India
| | | | | | | | - Manisha Sethi
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | | | - Arup Ghosh
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | - Rina Yadav
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | - Hiren Dodia
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | | | - Saikat De
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | - Deepak Singh
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | | | - Rupesh Dash
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | | | | | | | | | - Rajeeb Swain
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
| | | | - Ajay Parida
- Institute of Life Sciences, Bhubaneswar, Odisha, India.
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Jaiswal AK, Yadav J, Makhija S, Mazumder S, Mitra AK, Suryawanshi A, Sandey M, Mishra A. Irg1/itaconate metabolic pathway is a crucial determinant of dendritic cells immune-priming function and contributes to resolute allergen-induced airway inflammation. Mucosal Immunol 2022; 15:301-313. [PMID: 34671116 PMCID: PMC8866123 DOI: 10.1038/s41385-021-00462-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 09/29/2021] [Accepted: 10/04/2021] [Indexed: 02/04/2023]
Abstract
Itaconate is produced from the mitochondrial TCA cycle enzyme aconitase decarboxylase (encoded by immune responsive gene1; Irg1) that exerts immunomodulatory function in myeloid cells. However, the role of the Irg1/itaconate pathway in dendritic cells (DC)-mediated airway inflammation and adaptive immunity to inhaled allergens, which are the primary antigen-presenting cells in allergic asthma, remains largely unknown. House dust mite (HDM)-challenged Irg1-/- mice displayed increases in eosinophilic airway inflammation, mucous cell metaplasia, and Th2 cytokine production with a mechanism involving impaired mite antigen presentations by DC. Adoptive transfer of HDM-pulsed DC from Irg1-deficient mice into naïve WT mice induced a similar phenotype of elevated type 2 airway inflammation and allergic sensitization. Untargeted metabolite analysis of HDM-pulsed DC revealed itaconate as one of the most abundant polar metabolites that potentially suppress mitochondrial oxidative damage. Furthermore, the immunomodulatory effect of itaconate was translated in vivo, where intranasal administration of 4-octyl itaconate 4-OI following antigen priming attenuated the manifestations of HDM-induced airway disease and Th2 immune response. Taken together, these data demonstrated for the first time a direct regulatory role of the Irg1/itaconate pathway in DC for the development of type 2 airway inflammation and suggest a possible therapeutic target in modulating allergic asthma.
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Affiliation(s)
- Anil Kumar Jaiswal
- grid.252546.20000 0001 2297 8753From the Laboratory of Lung Inflammation, Auburn University, Auburn, AL USA ,grid.252546.20000 0001 2297 8753Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL USA
| | - Jyoti Yadav
- grid.252546.20000 0001 2297 8753From the Laboratory of Lung Inflammation, Auburn University, Auburn, AL USA ,grid.252546.20000 0001 2297 8753Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL USA
| | - Sangeet Makhija
- grid.252546.20000 0001 2297 8753From the Laboratory of Lung Inflammation, Auburn University, Auburn, AL USA ,grid.252546.20000 0001 2297 8753Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL USA
| | - Suman Mazumder
- grid.252546.20000 0001 2297 8753Department of Drug Discovery and Development, Auburn University, Auburn, AL USA ,grid.252546.20000 0001 2297 8753Center for Pharmacogenomics and Single-Cell Omics, Harrison School of Pharmacy, Auburn University, Auburn, AL USA
| | - Amit Kumar Mitra
- grid.252546.20000 0001 2297 8753Department of Drug Discovery and Development, Auburn University, Auburn, AL USA ,grid.252546.20000 0001 2297 8753Center for Pharmacogenomics and Single-Cell Omics, Harrison School of Pharmacy, Auburn University, Auburn, AL USA
| | - Amol Suryawanshi
- grid.252546.20000 0001 2297 8753Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL USA
| | - Maninder Sandey
- grid.252546.20000 0001 2297 8753Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL USA
| | - Amarjit Mishra
- grid.252546.20000 0001 2297 8753From the Laboratory of Lung Inflammation, Auburn University, Auburn, AL USA ,grid.252546.20000 0001 2297 8753Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL USA
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Jaiswal AK, Yadav J, Makhija S, Sandey M, Suryawanshi A, Mitra AK, Mishra A. Short Palate, Lung, and Nasal Epithelial Clone1 (SPLUNC1) level determines steroid-resistant airway inflammation in aging. Am J Physiol Lung Cell Mol Physiol 2021; 322:L102-L115. [PMID: 34851736 PMCID: PMC8759962 DOI: 10.1152/ajplung.00315.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Asthma and its heterogeneity change with age. Increased airspace neutrophil numbers contribute to severe steroid-resistant asthma exacerbation in the elderly, which correlates with the changes seen in adults with asthma. However, whether that resembles the same disease mechanism and pathophysiology in aged and adults is poorly understood. Here, we sought to address the underlying molecular mechanism of steroid-resistant airway inflammation development and response to corticosteroid (Dex) therapy in aged mice. To study the changes in inflammatory mechanism, we used a clinically relevant treatment model of house-dust mite (HDM)-induced allergic asthma and investigated lung adaptive immune response in adult (20–22 wk old) and aged (80–82 wk old) mice. Our result indicates an age-dependent increase in airway hyperresponsiveness (AHR), mixed granulomatous airway inflammation comprising eosinophils and neutrophils, and Th1/Th17 immune response with progressive decrease in frequencies and numbers of HDM-bearing dendritic cells (DC) accumulation in the draining lymph node (DLn) of aged mice as compared with adult mice. RNA-Seq experiments of the aged lung revealed short palate, lung, and nasal epithelial clone 1 (SPLUNC1) as one of the steroid-responsive genes, which progressively declined with age and further by HDM-induced inflammation. Moreover, we found increased glycolytic reprogramming, maturation/activation of DCs, the proliferation of OT-II cells, and Th2 cytokine secretion with recombinant SPLUNC1 (rSPLUNC1) treatment. Our results indicate a novel immunomodulatory role of SPLUNC1 regulating metabolic adaptation/maturation of DC. An age-dependent decline in the SPLUNC1 level may be involved in developing steroid-resistant airway inflammation and asthma heterogeneity.
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Affiliation(s)
- Anil Kumar Jaiswal
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Jyoti Yadav
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Sangeet Makhija
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Maninder Sandey
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Amit Kumar Mitra
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, United States.,Center for Pharmacogenomics and Single-Cell Omics, Harrison School of Pharmacy, Auburn University, Auburn, AL, United States
| | - Amarjit Mishra
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
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Kang X, Cai Y, Wang Q, Wang C, Chen W, Yang W, Suryawanshi A, Zhou G, Chen P, Li F. Near-infrared light triggered activation of pro-drug combination cancer therapy and induction of immunogenic cell death. Int J Pharm 2021; 607:120972. [PMID: 34363916 PMCID: PMC8567724 DOI: 10.1016/j.ijpharm.2021.120972] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/26/2021] [Accepted: 08/02/2021] [Indexed: 12/16/2022]
Abstract
Disulfiram copper complex [Cu(DDC)2] nanoparticles have been explored as promising anticancer agents but with concerns of toxic side effects. To improve tumor specificity and enhance anticancer efficacy, we developed a novel [copper sulfide nanoparticle (CuS NP) + disulfiram prodrug (DQ) micelle + near-infrared (NIR) laser] (CDL) combination therapy. DQ, a reactive oxygen species (ROS)-responsive prodrug, can be selectively activated at the tumor site with elevated ROS to release DDC and form Cu(DDC)2in situ. The CuS NP + NIR laser treatment can effectively increase the intra-tumor ROS levels and efficiently activate the DQ prodrug. The CDL therapy kills cancer cells through multiple mechanisms, including ROS amplification cascade and Cu(DDC)2 chemotherapy. NIR light-triggered tumor-specific "nontoxic-to-toxic" transition can significantly improve the specificity of anticancer effects and reduce systemic toxicity. Also, CDL therapy can effectively induce immunogenic cell death (ICD) and has the potential of eliciting antitumor immunity.
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Affiliation(s)
- Xuejia Kang
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849 USA
| | - Yuxin Cai
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849 USA
| | - Qi Wang
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849 USA
| | - Chuanyu Wang
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849 USA
| | - Wu Chen
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849 USA
| | - Wen Yang
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849 USA
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA
| | - Gang Zhou
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912 USA
| | - Pengyu Chen
- Materials Research and Education Center, Materials Engineering, Department of Mechanical Engineering, Auburn University, Auburn, AL 36849 USA
| | - Feng Li
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849 USA.
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12
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Antony F, Pundkar C, Sandey M, Jaiswal AK, Mishra A, Kumar A, Channappanavar R, Suryawanshi A. IFN-λ Regulates Neutrophil Biology to Suppress Inflammation in Herpes Simplex Virus-1-Induced Corneal Immunopathology. J Immunol 2021; 206:1866-1877. [PMID: 33811102 DOI: 10.4049/jimmunol.2000979] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 02/08/2021] [Indexed: 12/13/2022]
Abstract
HSV-1 infection of the cornea causes a severe immunoinflammatory and vision-impairing condition called herpetic stromal keratitis (SK). The virus replication in corneal epithelium followed by neutrophil- and CD4+ T cell-mediated inflammation plays a dominant role in SK. Although previous studies demonstrate critical functions of type I IFNs (IFN-α/β) in HSV-1 infection, the role of recently discovered IFN-λ (type III IFN), specifically at the corneal mucosa, is poorly defined. Our study using a mouse model of SK pathogenesis shows that HSV-1 infection induces a robust IFN-λ response compared with type I IFN production at the corneal mucosal surface. However, the normal progression of SK indicates that the endogenous IFN responses are insufficient to suppress HSV-1-induced corneal pathology. Therefore, we examined the therapeutic efficacy of exogenous rIFN-λ during SK progression. Our results show that rIFN-λ therapy suppressed inflammatory cell infiltration in the cornea and significantly reduced the SK pathologic condition. Early rIFN-λ treatment significantly reduced neutrophil and macrophage infiltration, and IL-6, IL-1β, and CXCL-1 production in the cornea. Notably, the virucidal capacity of neutrophils and macrophages measured by reactive oxygen species generation was not affected. Similarly, ex vivo rIFN-λ treatment of HSV-1-stimulated bone marrow-derived neutrophils significantly promoted IFN-stimulated genes without affecting reactive oxygen species production. Collectively, our data demonstrate that exogenous topical rIFN-λ treatment during the development and progression of SK could represent a novel therapeutic approach to control HSV-1-induced inflammation and associated vision impairment.
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Affiliation(s)
- Ferrin Antony
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849
| | - Chetan Pundkar
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849
| | - Maninder Sandey
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849
| | - Anil K Jaiswal
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849
| | - Amarjit Mishra
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849
| | - Ashok Kumar
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University, Detroit, MI 48201; and
| | | | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849;
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13
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Raghav S, Ghosh A, Turuk J, Kumar S, Jha A, Madhulika S, Priyadarshini M, Biswas VK, Shyamli PS, Singh B, Singh N, Singh D, Datey A, Avula K, Smita S, Sabat J, Bhattacharya D, Kshatri JS, Vasudevan D, Suryawanshi A, Dash R, Senapati S, Beuria TK, Swain R, Chattopadhyay S, Syed GH, Dixit A, Prasad P, Pati S, Parida A. Analysis of Indian SARS-CoV-2 Genomes Reveals Prevalence of D614G Mutation in Spike Protein Predicting an Increase in Interaction With TMPRSS2 and Virus Infectivity. Front Microbiol 2020; 11:594928. [PMID: 33329480 PMCID: PMC7732478 DOI: 10.3389/fmicb.2020.594928] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [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: 08/14/2020] [Accepted: 10/21/2020] [Indexed: 01/26/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus, has emerged as a global pandemic worldwide. In this study, we used ARTIC primers-based amplicon sequencing to profile 225 SARS-CoV-2 genomes from India. Phylogenetic analysis of 202 high-quality assemblies identified the presence of all the five reported clades 19A, 19B, 20A, 20B, and 20C in the population. The analyses revealed Europe and Southeast Asia as two major routes for introduction of the disease in India followed by local transmission. Interestingly, the19B clade was found to be more prevalent in our sequenced genomes (17%) compared to other genomes reported so far from India. Haplotype network analysis showed evolution of 19A and 19B clades in parallel from predominantly Gujarat state in India, suggesting it to be one of the major routes of disease transmission in India during the months of March and April, whereas 20B and 20C appeared to evolve from 20A. At the same time, 20A and 20B clades depicted prevalence of four common mutations 241 C > T in 5' UTR, P4715L, F942F along with D614G in the Spike protein. D614G mutation has been reported to increase virus shedding and infectivity. Our molecular modeling and docking analysis identified that D614G mutation resulted in enhanced affinity of Spike S1-S2 hinge region with TMPRSS2 protease, possibly the reason for increased shedding of S1 domain in G614 as compared to D614. Moreover, we also observed an increased concordance of G614 mutation with the viral load, as evident from decreased Ct value of Spike and the ORF1ab gene.
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Affiliation(s)
- Sunil Raghav
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Arup Ghosh
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | | | - Sugandh Kumar
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Atimukta Jha
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | | | | | | | | | - Bharati Singh
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Neha Singh
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Deepika Singh
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Ankita Datey
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Kiran Avula
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | - Shuchi Smita
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | | | | | | | | | | | - Rupesh Dash
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | | | | | - Rajeeb Swain
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | | | | | | | - Punit Prasad
- Institute of Life Sciences (ILS), Bhubaneswar, India
| | | | | | | | - Ajay Parida
- Institute of Life Sciences (ILS), Bhubaneswar, India
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14
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Jaiswal AK, Makhija S, Stahr N, Sandey M, Suryawanshi A, Mishra A. Pyruvate kinase M2 in lung APCs regulates Alternaria-induced airway inflammation. Immunobiology 2020; 225:151956. [PMID: 32747016 PMCID: PMC7403530 DOI: 10.1016/j.imbio.2020.151956] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/29/2020] [Accepted: 05/03/2020] [Indexed: 12/21/2022]
Abstract
Sensitivity to allergenic fungi (Alternaria alternata) is associated with acute, severe asthma attacks. Antigen presenting cells (APCs) in the lung sense environmental perturbations that induce cellular stress and metabolic changes and are critical for allergic airway inflammation. However, the mechanisms underlying such environmental sensing by APCs in the lung remains unclear. Here we show that acute Alternaria challenge rapidly induces neutrophil accumulation in airways, and alter expressions of Pyruvate Kinase (PKM2) and hypoxia-inducible factor -1α (Hif-1α) that correlates with proinflammatory mediator release. Blockade of IL33 signaling in vivo led to reduce oxidative stress and glycolysis in lung APCs. Lung-specific ablation of CD11c+ cells abrogates Alternaria-induced neutrophil accumulation and inflammation. Furthermore, administration of Alternaria into the airways stimulated APCs and elevate the expression of Glut-1. Mechanistically, we establish that PKM2 is a critical modulator of lung APC activation in Alternaria-induced acute inflammation. Allosteric activation of PKM2 by a small molecule ML265 or siRNA-mediated knock down correlated negatively with glycolysis and activation of APCs. These results collectively demonstrates that PKM2-mediated glycolytic reprogramming by fungal allergen Alternaria influences lung APC activation, thereby promotes acute airway inflammation. Our data support a model in which Alternaria sensitization in airways induce a circuitry of glycolysis and PKM2 regulation that confers an acute activation of APCs in the lung, whose targeting might represent a strategy for asthma treatment.
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Affiliation(s)
- Anil Kumar Jaiswal
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States
| | - Sangeet Makhija
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States
| | - Natalie Stahr
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States
| | - Maninder Sandey
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States
| | - Amarjit Mishra
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States.
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15
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Jaiswal AK, Makhija S, Stahr N, Sandey M, Suryawanshi A, Saxena A, Dagur PK, McCoy JP, Levine SJ, Mishra A. Dendritic Cell-Restricted Progenitors Contribute to Obesity-Associated Airway Inflammation via Adam17-p38 MAPK-Dependent Pathway. Front Immunol 2020; 11:363. [PMID: 32184787 PMCID: PMC7058657 DOI: 10.3389/fimmu.2020.00363] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/14/2020] [Indexed: 01/08/2023] Open
Abstract
Proliferation of dendritic cell (DC)—restricted progenitor cells in bone marrow compartment is tightly regulated at steady state and responds to multiple tissue-specific triggers during disturbed homeostasis such as obesity. DCs in the lung stem from a rapidly dividing DC-restricted progenitor cells and are effective at generating adaptive immune responses in allergic airway inflammation. Precisely, how DC-restricted progenitor expansion and differentiation are influenced by airway inflammation to maintain constant supply of myeloid DCs is poorly understood. Here we show that a high fat diet (HFD) induces oxidative stress and accelerates the expansion of DC- restricted progenitor cells in bone marrow and correlates with persistent induction of p38 mitogen activated protein kinase (MAPK), which is blocked with a selective p38α/β MAPK inhibitor. Mice fed a HFD and sensitized to inhaled allergen house dust mite (HDM) led to alterations of DC- restricted progenitor cells that were characterized by increased expansion and seeding of lung DCs in airway inflammation. Mechanistically, we establish that the expansion induced by HFD dysregulates the expression of a disintegrin and metallopeptidase domain 17 (Adam17) and is required for p38 MAPK activation in DC-restricted progenitors. These results demonstrates that obesity produces persistent changes in DC precursors and that elevation of Adam17 expression is tightly coupled to p38 MAPK and is a key driver of proliferation. Altogether, these data provide phenotypic and mechanistic insight into dendritic cell supply chain in obesity-associated airway inflammation.
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Affiliation(s)
- Anil Kumar Jaiswal
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Sangeet Makhija
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Natalie Stahr
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Maninder Sandey
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Ankit Saxena
- Flow Cytometry Core Facility, Division of Intramural Research, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Pradeep K Dagur
- Flow Cytometry Core Facility, Division of Intramural Research, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - J Philip McCoy
- Flow Cytometry Core Facility, Division of Intramural Research, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Stewart J Levine
- Laboratory of Asthma and Lung Inflammation, Division of Intramural Research, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Amarjit Mishra
- Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, AL, United States.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
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16
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Suryawanshi A, Hussein MS, Prasad PD, Manicassamy S. Wnt Signaling Cascade in Dendritic Cells and Regulation of Anti-tumor Immunity. Front Immunol 2020; 11:122. [PMID: 32132993 PMCID: PMC7039855 DOI: 10.3389/fimmu.2020.00122] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [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: 06/10/2019] [Accepted: 01/16/2020] [Indexed: 01/26/2023] Open
Abstract
Dendritic cells (DCs) control the strength and quality of antigen-specific adaptive immune responses. This is critical for launching a robust immunity against invading pathogens while maintaining a state of tolerance to self-antigens. However, this also represents a fundamental barrier to anti-tumor immune responses and cancer immunotherapy. DCs in the tumor microenvironment (TME) play a key role in this process. The factors in the TME and signaling networks that program DCs to a regulatory state are not fully understood. Recent advances point to novel mechanisms by which the canonical Wnt signaling cascade in DCs regulates immune suppression, and the same pathway in tumors is associated with the evasion of anti-tumor immunity. Here, we review these recent advances in the context of the pleiotropic effects of the Wnts in shaping anti-tumor immune responses by modulating DC functions. In addition, we will discuss how Wnt/β-catenin pathway in DCs can be targeted for successful cancer immunotherapy.
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Affiliation(s)
- Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Mohamed S Hussein
- Georgia Cancer Center, Augusta University, Augusta, GA, United States
| | - Puttur D Prasad
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, United States
| | - Santhakumar Manicassamy
- Georgia Cancer Center, Augusta University, Augusta, GA, United States.,Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, United States
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17
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Roy Chattopadhyay N, Chakrabarti S, Chatterjee K, Deb Roy S, Kumar Sahu S, Reddy RR, Das P, Bijay Kanrar B, Kumar Das A, Tsering S, Puii Z, Zomawia E, Singh YI, Suryawanshi A, Choudhuri T. Histocompatibility locus antigens regions contribute to the ethnicity bias of Epstein-Barr virus-associated nasopharyngeal carcinoma in higher-incidence populations. Scand J Immunol 2019; 90:e12796. [PMID: 31145476 DOI: 10.1111/sji.12796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/28/2019] [Indexed: 02/04/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is one the most confusing and rare malignancy in most part of the world with significantly high occurrence in some populations of Southeast Asia, North Africa and Alaska. Apart from the dietary and environmental factors, NPC is well-associated with Epstein-Barr virus (EBV) infection in these ethnic groups. However, the internal molecular mechanism(s) for such association in specific populations is not known till date. Polymorphisms in the genes of histocompatibility locus antigens (HLA) are reported in NPC, but association of any particular polymorphism with ethnicity is not established yet. Here, we report a set of HLA polymorphisms in EBV-infected NPC samples from Northeast Indian population. These polymorphisms might play an important role for the lack of proper immune function against EBV infection and thus, eventually, for NPC generation in endemic populations like those of Northeast India.
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Affiliation(s)
| | | | - Koustav Chatterjee
- Department of Biotechnology, Visva Bharati University, Santiniketan, Bolpur, West Bengal, India
| | - Sankar Deb Roy
- Department of Radiation Oncology, Civil Hospital, Dimapur, Nagaland, India
| | - Sushil Kumar Sahu
- Depatrment of Pharmacology & Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - R Rajendra Reddy
- Division of Infectious Disease Biology, Institute of Life Sciences, Bhubaneswar, India
| | - Piyanki Das
- Department of Biotechnology, Visva Bharati University, Santiniketan, Bolpur, West Bengal, India
| | - Basab Bijay Kanrar
- Department of Biotechnology, Visva Bharati University, Santiniketan, Bolpur, West Bengal, India
| | - Ashok Kumar Das
- ENT Department, Dr B. Borooah Cancer Institute, Guwahati, Assam, India
| | - Sam Tsering
- Tertiary Cancer Center, Tomo Riba Institute of Health And Medical Sciences, Arunachal Pradesh, India
| | | | | | - Y Indibor Singh
- Department of Radiotherapy, Regional Institute of Medical Sciences, Imphal, Manipur, India
| | - Amol Suryawanshi
- Division of Infectious Disease Biology, Institute of Life Sciences, Bhubaneswar, India
| | - Tathagata Choudhuri
- Department of Biotechnology, Visva Bharati University, Santiniketan, Bolpur, West Bengal, India
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18
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Jaiswal AK, Sandey M, Suryawanshi A, Cattley RC, Mishra A. Dimethyl fumarate abrogates dust mite-induced allergic asthma by altering dendritic cell function. Immun Inflamm Dis 2019; 7:201-213. [PMID: 31264384 PMCID: PMC6688084 DOI: 10.1002/iid3.262] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/23/2019] [Accepted: 05/25/2019] [Indexed: 12/12/2022]
Abstract
Introduction Allergic asthma is the most common inflammatory disease of upper airways. Airway dendritic cells (DCs) are key antigen presenting cells that regulate T helper 2 (Th2)‐dependent allergic inflammation. Recent studies have shown critical role of airway DCs in the induction of Th2‐mediated allergic inflammation and are attractive therapeutic targets in asthma. However, molecular signaling mechanism that regulate DCs function to Th2 immune responses are poorly understood. Here we aim to evaluate the immunomodulatory effect of dimethyl fumarate (DMF), an FDA approved small molecule drug, in the house dust mite (HDM)‐induced experimental model of allergic asthma. Methods DMF was administered intranasally in the challenge period of HDM‐induced murine model of experimental asthma. Airway inflammation, airway hyperreactivity, Th2/Th1 cytokine were assessed. The effect of DMF on DC function was further evaluated by adoptive transfer of HDM‐pulsed DMF treated DCs to wild‐type naïve mice. Results DMF treatment significantly reduced HDM‐induced airway inflammation, mucous cell metaplasia, and airway hyperactivity to inhaled methacholine. Mechanistically, DMF interferes with the migration of lung DCs to draining mediastinal lymph nodes, thereby attenuates the induction of allergic sensitization and Th2 immune response. Notably, adoptive transfer of DMF treated DCs to naïve mice with HDM challenge similarly reduces the features of allergic asthma. Conclusion This identifies a novel function of DMF on DC‐mediated adaptive immune responses in the setting of HDM‐induced airway inflammation. Taken together, our results offer a mechanistic rationale for DMF use to target DCs in local lung environment as antiasthmatic therapy.
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Affiliation(s)
- Anil K Jaiswal
- The Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, Alabama.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama
| | - Maninder Sandey
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama
| | - Russell C Cattley
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama
| | - Amarjit Mishra
- The Laboratory of Lung Inflammation, College of Veterinary Medicine, Auburn University, Auburn, Alabama.,Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama
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19
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Jaiswal AK, Sandey M, Suryawanshi A, Cattley RC, Mishra A. Dimethyl fumarate attenuates T helper type 2 (Th2) -mediated allergic airway inflammation by modulating dendritic cell function. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.55.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Dendritic cells (DCs) are primary antigen presenting cells in lungs that promote Th2 cell mediated immunity to house dust mite (HDM) allergen. DCs are attractive therapeutic targets to modulate allergen-induced airway inflammation and adaptive immune responses. Dimethyl fumarate (DMF) are methyl esters of fumaric acid and regulates immune cell differentiation and effector functions. However, the effect of DMF on lung DCs has not yet been addressed. Here, we investigated the effect of DMF treatment employing murine model of HDM-induced experimental allergic asthma and DC adoptive transfer experiment. We show that local DMF application attenuates airway inflammation, mucous cell hyperplasia, and airway resistance to increasing dosage of inhaled methacholine. Notably, DMF administration in the allergen challenge phase significantly inhibited the lung recruitment of CD11b+ conventional DCs (cDC2) and suppressed Th2 cytokine producing IL4, IL5, and IL13 CD4+ T cells. In lung draining mediastinal lymph node (mLNs), DMF treatment significantly induces CD4+T regulatory (Tregs) cells. Moreover, prior to administration of fluorescent-labeled HDM, single DMF application to naïve mice impeded the migration of CD11b+ cDC2 to the draining mLNs. Adoptive transfer of DMF treated CD11c+ HDM-pulsed DCs to naïve mice with subsequent intranasal HDM-challenge similarly attenuates the features of airway inflammation. Collectively, our findings suggest that local DMF application modulates lung DCs function, thereby attenuates airway inflammation and is a potent antiasthmatic therapeutic agent.
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20
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Ranganathan P, Shanmugam A, Swafford D, Suryawanshi A, Bhattacharjee P, Hussein MS, Koni PA, Prasad PD, Kurago ZB, Thangaraju M, Ganapathy V, Manicassamy S. GPR81, a Cell-Surface Receptor for Lactate, Regulates Intestinal Homeostasis and Protects Mice from Experimental Colitis. J Immunol 2018; 200:1781-1789. [PMID: 29386257 DOI: 10.4049/jimmunol.1700604] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 12/18/2017] [Indexed: 01/29/2023]
Abstract
At mucosal sites such as the intestine, the immune system launches robust immunity against invading pathogens while maintaining a state of tolerance to commensal flora and ingested food Ags. The molecular mechanisms underlying this phenomenon remain poorly understood. In this study, we report that signaling by GPR81, a receptor for lactate, in colonic dendritic cells and macrophages plays an important role in suppressing colonic inflammation and restoring colonic homeostasis. Genetic deletion of GPR81 in mice led to increased Th1/Th17 cell differentiation and reduced regulatory T cell differentiation, resulting in enhanced susceptibility to colonic inflammation. This was due to increased production of proinflammatory cytokines (IL-6, IL-1β, and TNF-α) and decreased expression of immune regulatory factors (IL-10, retinoic acid, and IDO) by intestinal APCs lacking GPR81. Consistent with these findings, pharmacological activation of GPR81 decreased inflammatory cytokine expression and ameliorated colonic inflammation. Taken together, these findings identify a new and important role for the GPR81 signaling pathway in regulating immune tolerance and colonic inflammation. Thus, manipulation of the GPR81 pathway could provide novel opportunities for enhancing regulatory responses and treating colonic inflammation.
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Affiliation(s)
| | | | - Daniel Swafford
- Georgia Cancer Center, Augusta University, Augusta, GA 30912
| | | | - Pushpak Bhattacharjee
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX 79430
| | | | - Pandelakis A Koni
- Georgia Cancer Center, Augusta University, Augusta, GA 30912.,Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30901.,Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30901; and
| | - Puttur D Prasad
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30901; and
| | - Zoya B Kurago
- Dental College of Georgia, Augusta University, Augusta, GA 30912
| | - Muthusamy Thangaraju
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30901; and
| | - Vadivel Ganapathy
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX 79430
| | - Santhakumar Manicassamy
- Georgia Cancer Center, Augusta University, Augusta, GA 30912; .,Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30901
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21
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Suryawanshi A, Tadagavadi RK, Swafford D, Manicassamy S. Modulation of Inflammatory Responses by Wnt/β-Catenin Signaling in Dendritic Cells: A Novel Immunotherapy Target for Autoimmunity and Cancer. Front Immunol 2016; 7:460. [PMID: 27833613 PMCID: PMC5081350 DOI: 10.3389/fimmu.2016.00460] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/12/2016] [Indexed: 12/02/2022] Open
Abstract
The Wnt/β-catenin pathway is an evolutionarily conserved signaling pathway critical for several biological processes. An aberrant Wnt/β-catenin signaling is linked to several human diseases. Emerging studies have highlighted the regulatory role of the Wnt/β-catenin signaling pathway in normal physiological processes of parenchymal and hematopoietic cells. Recent studies have shown that the activation of Wnt/β-catenin pathway in dendritic cells (DCs) play a critical role in mucosal tolerance and suppression of chronic autoimmune pathologies. Alternatively, tumors activate Wnt/β-catenin pathway in DCs to induce immune tolerance and thereby evade antitumor immunity through suppression of effector T cell responses and promotion of regulatory T cell responses. Here, we review our work and current understanding of how Wnt/β-catenin signaling in DCs shapes the immune response in cancer and autoimmunity and discuss how Wnt/β-catenin pathway can be targeted for successful therapeutic interventions in various human diseases.
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Affiliation(s)
- Amol Suryawanshi
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | | | - Daniel Swafford
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | - Santhakumar Manicassamy
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Cancer Center, Augusta University, Augusta, GA, USA
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22
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Manoharan I, Suryawanshi A, Hong Y, Ranganathan P, Shanmugam A, Ahmad S, Swafford D, Manicassamy B, Ramesh G, Koni PA, Thangaraju M, Manicassamy S. Homeostatic PPARα Signaling Limits Inflammatory Responses to Commensal Microbiota in the Intestine. J Immunol 2016; 196:4739-49. [PMID: 27183583 DOI: 10.4049/jimmunol.1501489] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 03/25/2016] [Indexed: 12/28/2022]
Abstract
Dietary lipids and their metabolites activate members of the peroxisome proliferative-activated receptor (PPAR) family of transcription factors and are critical for colonic health. The PPARα isoform plays a vital role in regulating inflammation in various disease settings, but its role in intestinal inflammation, commensal homeostasis, and mucosal immunity in the gut are unclear. In this study, we demonstrate that the PPARα pathway in innate immune cells orchestrates gut mucosal immunity and commensal homeostasis by regulating the expression of IL-22 and the antimicrobial peptides RegIIIβ, RegIIIγ, and calprotectin. Additionally, the PPARα pathway is critical for imparting regulatory phenotype in intestinal macrophages. PPARα deficiency in mice led to commensal dysbiosis in the gut, resulting in a microbiota-dependent increase in the expression of inflammatory cytokines and enhanced susceptibility to intestinal inflammation. Pharmacological activation of this pathway decreased the expression of inflammatory cytokines and ameliorated colonic inflammation. Taken together, these findings identify a new important innate immune function for the PPARα signaling pathway in regulating intestinal inflammation, mucosal immunity, and commensal homeostasis. Thus, the manipulation of the PPARα pathway could provide novel opportunities for enhancing mucosal immunity and treating intestinal inflammation.
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Affiliation(s)
| | | | - Yuan Hong
- Cancer Center, Augusta University, Augusta, GA 30912
| | | | | | - Shamim Ahmad
- Cancer Center, Augusta University, Augusta, GA 30912
| | | | | | - Ganesan Ramesh
- Vascular Biology Center, Augusta University, Augusta, GA 30912
| | - Pandelakis A Koni
- Cancer Center, Augusta University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912; and
| | - Muthusamy Thangaraju
- Cancer Center, Augusta University, Augusta, GA 30912; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Santhakumar Manicassamy
- Cancer Center, Augusta University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912; and Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912
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23
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Sampson JF, Suryawanshi A, Chen W, Rabinovich GA, Panjwani N. Galectin‐8 promotes regulatory T‐cell differentiation by modulating IL‐2 and TGFβ signaling. Immunol Cell Biol 2016; 94:220. [DOI: 10.1038/icb.2016.8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Hong Y, Manoharan I, Suryawanshi A, Shanmugam A, Swafford D, Ahmad S, Chinnadurai R, Manicassamy B, He Y, Mellor AL, Thangaraju M, Munn DH, Manicassamy S. Deletion of LRP5 and LRP6 in dendritic cells enhances antitumor immunity. Oncoimmunology 2015; 5:e1115941. [PMID: 27141399 DOI: 10.1080/2162402x.2015.1115941] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 10/26/2015] [Accepted: 10/29/2015] [Indexed: 10/22/2022] Open
Abstract
The tumor microenvironment (TME) contains high levels of the Wnt family of ligands, and aberrant Wnt-signaling occurs in many tumors. Past studies have been directed toward how the Wnt signaling cascade regulates cancer development, progression and metastasis. However, its effects on host antitumor immunity remain unknown. In this report, we show that Wnts in the TME condition dendritic cells (DCs) to a regulatory state and suppress host antitumor immunity. DC-specific deletion of Wnt co-receptors low-density lipoprotein receptor-related protein 5 and 6 (LRP5/6) in mice markedly delayed tumor growth and enhanced host antitumor immunity. Mechanistically, loss of LRP5/6-mediated signaling in DCs resulted in enhanced effector T cell differentiation and decreased regulatory T cell differentiation. This was due to increased production of pro-inflammatory cytokines and decreased production of IL-10, TGF-β1 and retinoic acid (RA). Likewise, pharmacological inhibition of the Wnts' interaction with its cognate co-receptors LRP5/6 and Frizzled (Fzd) receptors had similar effects on tumor growth and effector T cell responses. Moreover, blocking Wnt-signaling in DCs resulted in enhanced capture of tumor-associated antigens and efficient cross-priming of CD8+ T cells. Hence, blocking the Wnt pathway represents a potential therapeutic to overcome tumor-mediated immune suppression and augment antitumor immunity.
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Affiliation(s)
- Yuan Hong
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - Indumathi Manoharan
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - Amol Suryawanshi
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - Arulkumaran Shanmugam
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - Daniel Swafford
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - Shamim Ahmad
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - Raghavan Chinnadurai
- Department of Hematology and Oncology, Winship Cancer Institute, Emory University , Atlanta, GA, USA
| | | | - Yukai He
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA
| | - Andrew L Mellor
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA
| | - Muthusamy Thangaraju
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University , Augusta, GA, USA
| | - David H Munn
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA; Department of Pediatrics, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA
| | - Santhakumar Manicassamy
- Cancer Immunology, Inflammation and Tolerance Program, GRU Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA; Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, GA, USA
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25
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Sampson JF, Suryawanshi A, Chen WS, Rabinovich GA, Panjwani N. Galectin-8 promotes regulatory T-cell differentiation by modulating IL-2 and TGFβ signaling. Immunol Cell Biol 2015; 94:213-9. [PMID: 26282995 PMCID: PMC4747822 DOI: 10.1038/icb.2015.72] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/22/2015] [Accepted: 06/24/2015] [Indexed: 12/15/2022]
Abstract
Galectins have emerged as potent immunoregulatory molecules that control chronic inflammation through distinct mechanisms. Galectin-8 (Gal-8), a tandem-repeat type galectin with unique preference for α2,3-sialylated glycans, is ubiquitously expressed, but little is known about its role in T cell differentiation. Here, we report that Gal-8 promotes the polyclonal differentiation of primary mouse Treg cells in vitro. We further show that Gal-8 also facilitates antigen-specific differentiation of regulatory T (Treg) cells, and that Treg cells polarized in the presence of Gal-8 express cytotoxic T lymphocyte antigen-4 (CTLA-4) and IL-10 at a higher frequency than control Treg cells, and efficiently inhibit proliferation of activated T cells in vitro. Investigation of the mechanism by which Gal-8 promotes Treg conversion revealed that Gal-8 activates TGFβ signaling and promotes sustained IL-2R signaling. Taken together, these data suggest that Gal-8 promotes the differentiation of highly suppressive Treg cells, which has implications for the treatment of inflammatory and autoimmune diseases.
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Affiliation(s)
- James F Sampson
- Program in Immunology and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Amol Suryawanshi
- Department of Ophthalmology, New England Eye Center, Tufts University School of Medicine, Boston, MA, USA
| | - Wei-Sheng Chen
- Program in Cell, Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Gabriel A Rabinovich
- Laboratorio de Inmunopatología, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Noorjahan Panjwani
- Program in Immunology and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA.,Department of Ophthalmology, New England Eye Center, Tufts University School of Medicine, Boston, MA, USA.,Program in Cell, Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA
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26
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Hong Y, Manoharan I, Suryawanshi A, Manicassamy S. Abstract 5036: Tumor-induced activation of the Wnt/β-catenin/TCF4 pathway in dendritic cells promotes immune tolerance. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-5036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Tumors actively suppress host antitumor immune response and this represents a fundamental barrier to successful cancer immunotherapy. However, the molecular mechanisms underlying tumor-induced immune tolerance are largely unknown. In the present study, we show that Wnt ligands in the tumor microenvironment activate the β-catenin/TCF4 pathway within dendritic cells (DCs) rendering them tolerogenic and able to suppress host antitumor immunity against melanoma. This was because Wnt/β-catenin/TCF4 signaling in DCs induced retinoic acid synthesizing enzymes, which induced T regulatory responses and suppressed effector T cells. Consistent with this observation, DC-specific deletion of key downstream mediators of canonical Wnt signaling (Wnt co-receptors low-density lipoprotein receptor-related protein 5 and 6 (LRP5/6), β-catenin and transcription factor 4 (TCF4)) in mice markedly delayed melanoma growth and enhanced host anti-tumor immunity. Likewise, pharmacological inhibition of the Wnt/β-catenin/TCF4 pathway in vivo had similar effects on tumor growth and effector T cell responses. Hence, Wnt/β-catenin/TCF4 pathway links together DCs, Tregs and the retionoic acid pathway, and is an important target for anticancer immunotherapy.
Note: This abstract was not presented at the meeting.
Citation Format: Yuan Hong, Indumathi Manoharan, Amol Suryawanshi, Santhakumar Manicassamy. Tumor-induced activation of the Wnt/β-catenin/TCF4 pathway in dendritic cells promotes immune tolerance. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 5036. doi:10.1158/1538-7445.AM2015-5036
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Affiliation(s)
- Yuan Hong
- Georgia Regents University, Augusta, GA
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27
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Suryawanshi A, Manicassamy S. Tumors induce immune tolerance through activation of β-catenin/TCF4 signaling in dendritic cells: A novel therapeutic target for cancer immunotherapy. Oncoimmunology 2015; 4:e1052932. [PMID: 26587326 PMCID: PMC4635893 DOI: 10.1080/2162402x.2015.1052932] [Citation(s) in RCA: 18] [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: 05/14/2015] [Accepted: 05/14/2015] [Indexed: 11/18/2022] Open
Abstract
Tumors promote immune suppression and dendritic cells (DCs) play a key role in this. However, signaling networks that program DCs to induce immune suppression are unknown. In our recent study, we showed that tumors activate β-catenin/TCF4 in DCs programming them to a regulatory state, which promotes T regulatory responses while suppresses effector T cell responses. Thus, targeting DCs-β-catenin pathway represents a promising target for anticancer immunotherapy.
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Affiliation(s)
- Amol Suryawanshi
- Cancer Immunology; Inflammation, and Tolerance Program; GRU Cancer Center; Georgia Regents University ; Augusta, GA USA
| | - Santhakumar Manicassamy
- Cancer Immunology; Inflammation, and Tolerance Program; GRU Cancer Center; Georgia Regents University ; Augusta, GA USA
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28
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Suryawanshi A, Manoharan I, Hong Y, Swafford D, Majumdar T, Taketo MM, Manicassamy B, Koni PA, Thangaraju M, Sun Z, Mellor AL, Munn DH, Manicassamy S. Canonical wnt signaling in dendritic cells regulates Th1/Th17 responses and suppresses autoimmune neuroinflammation. J Immunol 2015; 194:3295-304. [PMID: 25710911 DOI: 10.4049/jimmunol.1402691] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Breakdown in immunological tolerance to self-Ags or uncontrolled inflammation results in autoimmune disorders. Dendritic cells (DCs) play an important role in regulating the balance between inflammatory and regulatory responses in the periphery. However, factors in the tissue microenvironment and the signaling networks critical for programming DCs to control chronic inflammation and promote tolerance are unknown. In this study, we show that wnt ligand-mediated activation of β-catenin signaling in DCs is critical for promoting tolerance and limiting neuroinflammation. DC-specific deletion of key upstream (lipoprotein receptor-related protein [LRP]5/6) or downstream (β-catenin) mediators of canonical wnt signaling in mice exacerbated experimental autoimmune encephalomyelitis pathology. Mechanistically, loss of LRP5/6-β-catenin-mediated signaling in DCs led to an increased Th1/Th17 cell differentiation but reduced regulatory T cell response. This was due to increased production of proinflammatory cytokines and decreased production of anti-inflammatory cytokines such as IL-10 and IL-27 by DCs lacking LRP5/6-β-catenin signaling. Consistent with these findings, pharmacological activation of canonical wnt/β-catenin signaling delayed experimental autoimmune encephalomyelitis onset and diminished CNS pathology. Thus, the activation of canonical wnt signaling in DCs limits effector T cell responses and represents a potential therapeutic approach to control autoimmune neuroinflammation.
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Affiliation(s)
- Amol Suryawanshi
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Indumathi Manoharan
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Yuan Hong
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Daniel Swafford
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - Tanmay Majumdar
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912
| | - M Mark Taketo
- Department of Pharmacology, Kyoto University Graduate School of Medicine, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | | | - Pandelakis A Koni
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Muthusamy Thangaraju
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Zuoming Sun
- Division of Immunology, Beckman Research Institute of the City of Hope, Duarte, CA 91010; and
| | - Andrew L Mellor
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - David H Munn
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912; Department of Pediatrics, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Santhakumar Manicassamy
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Georgia Regents University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912;
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29
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Hong Y, Manoharan I, Suryawanshi A, Majumdar T, Angus-Hill ML, Koni PA, Manicassamy B, Mellor AL, Munn DH, Manicassamy S. β-catenin promotes regulatory T-cell responses in tumors by inducing vitamin A metabolism in dendritic cells. Cancer Res 2015; 75:656-665. [PMID: 25568183 DOI: 10.1158/0008-5472.can-14-2377] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tumors actively suppress antitumor immunity, creating formidable barriers to successful cancer immunotherapy. The molecular mechanisms underlying tumor-induced immune tolerance are largely unknown. In the present study, we show that dendritic cells (DC) in the tumor microenvironment acquire the ability to metabolize vitamin A to produce retinoic acid (RA), which drives regulatory T-cell responses and immune tolerance. Tolerogenic responses were dependent on induction of vitamin A-metabolizing enzymes via the β-catenin/T-cell factor (TCF) pathway in DCs. Consistent with this observation, DC-specific deletion of β-catenin in mice markedly reduced regulatory T-cell responses and delayed melanoma growth. Pharmacologic inhibition of either vitamin A-metabolizing enzymes or the β-catenin/TCF4 pathway in vivo had similar effects on tumor growth and regulatory T-cell responses. Hence, β-catenin/TCF4 signaling induces local regulatory DC and regulatory T-cell phenotypes via the RA pathway, identifying this pathway as an important target for anticancer immunotherapy.
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Affiliation(s)
- Yuan Hong
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Indumathi Manoharan
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Amol Suryawanshi
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | - Tanmay Majumdar
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA
| | | | - Pandelakis A Koni
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA.,Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, USA
| | | | - Andrew L Mellor
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA.,Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, USA
| | - David H Munn
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA.,Department of Pediatrics, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, USA
| | - Santhakumar Manicassamy
- Cancer Immunology, Inflammation, and Tolerance Program, GRU Cancer Center, Georgia Regents University, Augusta, Georgia, USA.,Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, Georgia, USA
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30
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Abstract
Acanthamoeba keratitis (AK) is a very painful and vision-impairing infection of the cornea that is difficult to treat. Although past studies have indicated a critical role of neutrophils and macrophages in AK, the relative contribution of the proinflammatory cytokine, IL-17A, that is essential for migration, activation, and function of these cells into the cornea is poorly defined. Moreover, the role of the adaptive immune response, particularly the contribution of CD4(+) T cell subsets, Th17 and regulatory T cells , in AK is yet to be understood. In this report, using a mouse corneal intrastromal injection-induced AK model, we show that Acanthamoeba infection induces a strong CD4(+) T effector and regulatory T cell response in the cornea and local draining lymph nodes. We also demonstrate that corneal Acanthamoeba infection induces IL-17A expression and that IL-17A is critical for host protection against severe AK pathology. Accordingly, IL-17A neutralization in Acanthamoeba-infected wild-type mice or Acanthamoeba infection of mice lacking IL-17A resulted in a significantly increased corneal AK pathology, increased migration of inflammatory cells at the site of inflammation, and a significant increase in the effector CD4(+) T cell response in draining lymph nodes. Thus, in sharp contrast with other corneal infections such as herpes and Pseudomonas aeruginosa keratitis where IL-17A exacerbates corneal pathology and inflammation, the findings presented in this article suggest that IL-17A production after Acanthamoeba infection plays an important role in host protection against invading parasites.
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Affiliation(s)
- Amol Suryawanshi
- New England Eye Center, Boston, MA 02111; Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111; and
| | - Zhiyi Cao
- New England Eye Center, Boston, MA 02111; Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111; and
| | - James F Sampson
- New England Eye Center, Boston, MA 02111; Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111; and
| | - Noorjahan Panjwani
- New England Eye Center, Boston, MA 02111; Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111; and Department of Biochemistry, Tufts University School of Medicine, Boston, MA 02111
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31
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Manoharan I, Hong Y, Suryawanshi A, Angus-Hill ML, Sun Z, Mellor AL, Munn DH, Manicassamy S. TLR2-dependent activation of β-catenin pathway in dendritic cells induces regulatory responses and attenuates autoimmune inflammation. J Immunol 2014; 193:4203-13. [PMID: 25210120 DOI: 10.4049/jimmunol.1400614] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dendritic cells (DCs) sense microbes via multiple innate receptors. Signals from different innate receptors are coordinated and integrated by DCs to generate specific innate and adaptive immune responses against pathogens. Previously, we have shown that two pathogen recognition receptors, TLR2 and dectin-1, which recognize the same microbial stimulus (zymosan) on DCs, induce mutually antagonistic regulatory or inflammatory responses, respectively. How diametric signals from these two receptors are coordinated in DCs to regulate or incite immunity is not known. In this study, we show that TLR2 signaling via AKT activates the β-catenin/T cell factor 4 pathway in DCs and programs them to drive T regulatory cell differentiation. Activation of β-catenin/T cell factor 4 was critical to induce regulatory molecules IL-10 (Il-10) and vitamin A metabolizing enzyme retinaldehyde dehydrogenase 2 (Aldh1a2) and to suppress proinflammatory cytokines. Deletion of β-catenin in DCs programmed them to drive Th17/Th1 cell differentiation in response to zymosan. Consistent with these findings, activation of the β-catenin pathway in DCs suppressed chronic inflammation and protected mice from Th17/Th1-mediated autoimmune neuroinflammation. Thus, activation of β-catenin in DCs via the TLR2 receptor is a novel mechanism in DCs that regulates autoimmune inflammation.
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Affiliation(s)
- Indumathi Manoharan
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Yuan Hong
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Amol Suryawanshi
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | | | - Zuoming Sun
- Division of Immunology, Beckman Research Institute of the City of Hope, Duarte, CA 91010
| | - Andrew L Mellor
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
| | - David H Munn
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; Department of Pediatrics, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912
| | - Santhakumar Manicassamy
- Cancer Immunology, Inflammation, and Tolerance Program, Georgia Regents University Cancer Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912; and
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32
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Suryawanshi A, Cao Z, Thitiprasert T, Zaidi TS, Panjwani N. Galectin-1-mediated suppression of Pseudomonas aeruginosa-induced corneal immunopathology. J Immunol 2013; 190:6397-409. [PMID: 23686486 PMCID: PMC3689592 DOI: 10.4049/jimmunol.1203501] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Corneal infection with Pseudomonas aeruginosa leads to a severe immunoinflammatory lesion, often causing vision impairment and blindness. Although past studies have indicated a critical role for CD4(+) T cells, particularly Th1 cells, in corneal immunopathology, the relative contribution of recently discovered Th17 and regulatory T cells is undefined. In this study, we demonstrate that after corneal P. aeruginosa infection, both Th1 and Th17 cells infiltrate the cornea with increased representation of Th17 cells. In addition to Th1 and Th17 cells, regulatory T cells also migrate into the cornea during early as well as late stages of corneal pathology. Moreover, using galectin-1 (Gal-1), an immunomodulatory carbohydrate-binding molecule, we investigated whether shifting the balance among various CD4(+) T cell subsets can modulate P. aeruginosa-induced corneal immunopathology. We demonstrate in this study that local recombinant Gal-1 (rGal-1) treatment by subconjunctival injections significantly diminishes P. aeruginosa-mediated corneal inflammation through multiple mechanisms. Specifically, in our study, rGal-1 treatment significantly diminished corneal infiltration of total CD45(+) T cells, neutrophils, and CD4(+) T cells. Furthermore, rGal-1 treatment significantly reduced proinflammatory Th17 cell response in the cornea as well as local draining lymph nodes. Also, rGal-1 therapy promoted anti-inflammatory Th2 and IL-10 response in secondary lymphoid organs. Collectively, our results indicate that corneal P. aeruginosa infection induces a strong Th17-mediated corneal pathology, and treatment with endogenously derived protein such as Gal-1 may be of therapeutic value for the management of bacterial keratitis, a prevalent cause of vision loss and blindness in humans worldwide.
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Affiliation(s)
- Amol Suryawanshi
- New England Eye Center and Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111
| | - Zhiyi Cao
- New England Eye Center and Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111
| | - Thananya Thitiprasert
- New England Eye Center and Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111
| | - Tanveer S. Zaidi
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115
| | - Noorjahan Panjwani
- New England Eye Center and Department of Ophthalmology, Tufts University School of Medicine, Boston, MA 02111
- Department of Biochemistry, Tufts University School of Medicine, Boston, MA 02111
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Veiga-Parga T, Suryawanshi A, Mulik S, Giménez F, Sharma S, Sparwasser T, Rouse BT. On the role of regulatory T cells during viral-induced inflammatory lesions. J Immunol 2012; 189:5924-33. [PMID: 23129753 DOI: 10.4049/jimmunol.1202322] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ocular HSV-1 infection can result in stromal keratitis, a blinding immunoinflammatory lesion that represents an immunopathological response to the infection. CD4(+) T cells are the main orchestrators, and lesions are more severe if the regulatory T cell (Treg) response is compromised from the onset of infection. Little is known about the role of Foxp3(+)CD4(+) Tregs during ongoing inflammatory reactions, which is the topic of this article. We used DEREG mice and depleted Tregs at different times postinfection. We show that lesions became more severe even when depletion was begun in the clinical phase of the disease. This outcome was explained both by Tregs' influence on the activity of inflammatory effector T cells at the lesion site and by an effect in lymphoid tissues that led to reduced numbers of effectors and less trafficking of T cells and neutrophils to the eye. Our results demonstrate that Tregs can beneficially influence the impact of ongoing tissue-damaging responses to a viral infection and imply that therapies boosting Treg function in the clinical phase hold promise for controlling a lesion that is an important cause of human blindness.
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Affiliation(s)
- Tamara Veiga-Parga
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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Giménez F, Suryawanshi A, Rouse BT. Pathogenesis of herpes stromal keratitis--a focus on corneal neovascularization. Prog Retin Eye Res 2012; 33:1-9. [PMID: 22892644 DOI: 10.1016/j.preteyeres.2012.07.002] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 07/20/2012] [Accepted: 07/25/2012] [Indexed: 12/28/2022]
Abstract
The cornea is a complex sensory organ that must maintain its transparency for optimal vision. Infections such as with herpes simplex virus can result in blinding immunoinflammatory reactions referred to as herpes stromal keratitis (HSK). In this review we discuss the pathogenesis of HSK referring to work mainly done using animal model systems. We briefly discuss the role of multiple cell types and soluble mediators but focus on the critical role of corneal vascularization (CV) in contributing to corneal damage. We describe how VEGF and other angiogenic molecules are induced following infection and discuss the many ways by which CV can be controlled. Speculations are made regarding future approaches that could improve the management of HSK.
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Affiliation(s)
- Fernanda Giménez
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, The University of Tennessee, Knoxville, TN 37996, USA
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Sehrawat S, Reddy P, Suryawanshi A, Khatri M, Rouse B. Th17 mediated recurrence of virus-induced immunopathology following discontinued FTY720 treatment (105.10). The Journal of Immunology 2012. [DOI: 10.4049/jimmunol.188.supp.105.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
In this report we show that the anti-inflammatory effect of FTY720 is lost on the discontinuation of treatment in Herpes Simplex Virus (HSV-I) induced ocular inflammation. The lesions developed after FTY720 treatment withdrawals were characterized by the predominance of Th17 cells over Th1 cells. Th17 but not Th1 cells expressed higher levels of surface CD103, an integrin that permits migration to inflammatory sites. Furthermore, we demonstrate that CD4+ T cells isolated from FTY720 treated but uninfected mice could be efficiently polarized towards Th17 and Treg but to a lesser extent towards Th1 phenotype. The hyper acute emergence of inflammation in FTY720 treated animals could be slowed down in IL-17RKO mice and upon administration of neutralizing antibody for IL-6, a proinflammatory cytokine involved in the generation of Th17 cells. These results suggested that approaches such as neutralization of proinflammatory cytokines might be considered along with FTY720 if interruption of the therapy is required to achieve the anti-inflammatory effects of the drug.
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Affiliation(s)
- Sharvan Sehrawat
- 2Pathobiology, University of Tennessee, Knoxville, TN
- 1Whitehead Institute and University of Tennessee, Cambridge, MA
| | - Pradeep Reddy
- 2Pathobiology, University of Tennessee, Knoxville, TN
| | | | - Madhu Khatri
- 2Pathobiology, University of Tennessee, Knoxville, TN
| | - Barry Rouse
- 2Pathobiology, University of Tennessee, Knoxville, TN
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36
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Jagadeesh Reddy PB, Suryawanshi A, Schreiber T, Rajasagi N, Hirashima M, Podack E, Rouse B. TNFR25SF AND GALECTIN-9 COMBINATION THERAPY REDUCES HERPES SIMPLEX VIRUS-1 INDUCED STROMAL KERATITIS BY EXPANDING REGULATORY T CELLS AND REDUCING PATHOGENIC TH1 CELLS (170.17). The Journal of Immunology 2012. [DOI: 10.4049/jimmunol.188.supp.170.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Ocular infection with HSV-1 results in a chronic immunoinflamammtory reaction in the cornea, which is primarily orchestrated by CD4 T cells. Hence, targeting proinflammatory CD4 T cells or increasing the representation of cells that regulate their function are relevant therapeutic strategies. In the present report, we use an agonistic mAb (4C12) to TNF receptor 25 (TNFR25) that selectively expands numbers of regulatory T cells (Tregs). Treatment early after ocular HSV infection with 4C12 caused a three fold increase in the Treg numbers in the cornea along with a consequent reduction in SK lesion severity. However, 4C12 treatment was less effective if given 6 days after infection since it expanded proinflammatory T effectors that also express TNFR25. To suppress the latter population, galectin-9 (Gal-9) was used which causes apoptosis of Th1 cells. When therapy with both 4C12 and gal-9 was used in combination, the recipients showed significantly reduced angiogenesis and SK lesions over single treatment controls. The beneficial outcome of the combination therapy was attributed to the expansion of the Treg population that expressed CD103 needed for trafficking to inflammatory sites along with a marked reduction in the infiltration of pathogenic CD4 T cells. Levels of several proinflammatory cytokines and chemokines were also reduced. Our results demonstrate that combination therapy may be a promising approach to control HSV induced SK lesions, a common cause of human blindness.
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Affiliation(s)
| | | | - Taylor Schreiber
- 3Department of Microbiology and Immunology, University of Miami Miller Sch. of Med., Miami, FL
| | | | - Mitsuomi Hirashima
- 4Department of Immunology and Immunopathology, Kagawa University, Kagawa, Japan
| | - Eckhard Podack
- 3Department of Microbiology and Immunology, University of Miami Miller Sch. of Med., Miami, FL
| | - Barry Rouse
- 1Pathobiology, University of Tennessee, Knoxville, TN
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Rajasagi NK, Suryawanshi A, Sehrawat S, Reddy PBJ, Mulik S, Hirashima M, Rouse BT. Galectin-1 reduces the severity of herpes simplex virus-induced ocular immunopathological lesions. J Immunol 2012; 188:4631-43. [PMID: 22467659 DOI: 10.4049/jimmunol.1103063] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Stromal keratitis is a chronic immunopathological lesion of the eye caused by HSV-1 infection that can result in blindness. Because the inflammatory lesions are primarily orchestrated by Th1 cells, and to a lesser extent by Th17 cells, inhibiting their activity represents a useful form of therapy. In this study we evaluated the therapeutic potential of galectin-1 (gal-1), an endogenous lectin that in some autoimmune diseases was shown to suppress the functions of Th1 and Th17 cells. Treatment was begun at different times after ocular infection with HSV and the outcome was assessed clinically as well as for effects on various immune parameters. Treatment with recombinant gal-1 significantly diminished stromal keratitis lesion severity and the extent of corneal neovascularization. Treated mice had reduced numbers of IFN-γ- and IL-17-producing CD4(+) T cells, as well as neutrophil infiltration in the cornea. Furthermore, disease severity was greater in gal-1 knockout mice compared with their wild-type counterparts. The many effects of gal-1 treatment include reduction in the production of proinflammatory cytokines and chemokines, increased production of IL-10, and inhibitory effects on molecules involved in neovascularization. To our knowledge, our findings are the first to show that gal-1 treatment represents a useful approach to control lesion severity in a virally induced immunopathological disease.
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Affiliation(s)
- Naveen K Rajasagi
- Comparative and Experimental Medicine, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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Suryawanshi A, Veiga-Parga T, Reddy PBJ, Rajasagi NK, Rouse BT. IL-17A differentially regulates corneal vascular endothelial growth factor (VEGF)-A and soluble VEGF receptor 1 expression and promotes corneal angiogenesis after herpes simplex virus infection. J Immunol 2012; 188:3434-46. [PMID: 22379030 DOI: 10.4049/jimmunol.1102602] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Ocular infection with HSV causes corneal neovascularization (CV), an essential step in the pathogenesis of the blinding immunoinflammatory lesion stromal keratitis. The infection results in IL-17A production, which contributes to CV in ways that together serve to shift the balance between corneal concentrations of vascular endothelial growth factor A (VEGF-A) and the soluble vascular endothelial growth factor receptor 1 molecule, which binds to VEGF-A and blocks its function (a so-called VEGF trap). Accordingly, animals lacking responses to IL-17A signaling, either because of IL-17 receptor A knockout or wild-type animals that received neutralizing mAb to IL-17A, had diminished CV, compared with controls. The procedures reduced VEGF-A protein levels but had no effect on the levels of soluble vascular endothelial growth factor receptor 1. Hence the VEGF trap was strengthened. IL-17A also caused increased CXCL1/KC synthesis, which attracts neutrophils to the inflammatory site. Neutrophils further influenced the extent of CV by acting as an additional source of VEGF-A, as did metalloproteinase enzymes that degrade the soluble receptor, inhibiting its VEGF-blocking activity. Our results indicate that suppressing the expression of IL-17A, or increasing the activity of the VEGF trap, represents a useful approach to inhibiting CV and the control of an ocular lesion that is an important cause of human blindness.
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Affiliation(s)
- Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996-0854, USA.
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Gajbhiye R, Sonawani A, Khan S, Suryawanshi A, Kadam S, Warty N, Raut V, Khole V. Identification and validation of novel serum markers for early diagnosis of endometriosis. Hum Reprod 2011; 27:408-17. [DOI: 10.1093/humrep/der410] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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40
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Veiga-Parga T, Suryawanshi A, Rouse BT. Controlling viral immuno-inflammatory lesions by modulating aryl hydrocarbon receptor signaling. PLoS Pathog 2011; 7:e1002427. [PMID: 22174686 PMCID: PMC3234248 DOI: 10.1371/journal.ppat.1002427] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 10/25/2011] [Indexed: 01/01/2023] Open
Abstract
Ocular herpes simplex virus infection can cause a blinding CD4⁺ T cell orchestrated immuno-inflammatory lesion in the cornea called Stromal Keratitis (SK). A key to controlling the severity of SK lesions is to suppress the activity of T cells that orchestrate lesions and enhance the representation of regulatory cells that inhibit effector cell function. In this report we show that a single administration of TCDD (2, 3, 7, 8- Tetrachlorodibenzo-p-dioxin), a non-physiological ligand for the AhR receptor, was an effective means of reducing the severity of SK lesions. It acted by causing apoptosis of Foxp3⁻ CD4⁺ T cells but had no effect on Foxp3⁺ CD4⁺ Tregs. TCDD also decreased the proliferation of Foxp3⁻ CD4⁺ T cells. The consequence was an increase in the ratio of Tregs to T effectors which likely accounted for the reduced inflammatory responses. In addition, in vitro studies revealed that TCDD addition to anti-CD3/CD28 stimulated naïve CD4⁺ T cells caused a significant induction of Tregs, but inhibited the differentiation of Th1 and Th17 cells. Since a single TCDD administration given after the disease process had been initiated generated long lasting anti-inflammatory effects, the approach holds promise as a therapeutic means of controlling virus induced inflammatory lesions.
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Affiliation(s)
- Tamara Veiga-Parga
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Amol Suryawanshi
- Emory Vaccine Center and Yerkes Primate Research Center, Atlanta, Georgia, United States of America
| | - Barry T. Rouse
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
- * E-mail:
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41
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Reddy PBJ, Sehrawat S, Suryawanshi A, Rajasagi NK, Mulik S, Hirashima M, Rouse BT. Influence of galectin-9/Tim-3 interaction on herpes simplex virus-1 latency. J Immunol 2011; 187:5745-55. [PMID: 22021615 DOI: 10.4049/jimmunol.1102105] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
After HSV-1 infection, CD8(+) T cells accumulate in the trigeminal ganglion (TG) and participate in the maintenance of latency. However, the mechanisms underlying intermittent virus reactivation are poorly understood. In this study, we demonstrate the role of an inhibitory interaction between T cell Ig and mucin domain-containing molecule 3 (Tim-3)-expressing CD8(+) T cells and galectin 9 (Gal-9) that could influence HSV-1 latency and reactivation. Accordingly, we show that most K(b)-gB tetramer-specific CD8(+) T cells in the TG of HSV-1-infected mice express Tim-3, a molecule that delivers negative signals to CD8(+) T cells upon engagement of its ligand Gal-9. Gal-9 was also upregulated in the TG when replicating virus was present as well during latency. This could set the stage for Gal-9/Tim-3 interaction, and this inhibitory interaction was responsible for reduced CD8(+) T cell effector function in wild-type mice. Additionally, TG cell cultures exposed to recombinant Gal-9 in the latent phase caused apoptosis of most CD8(+) T cells. Furthermore, Gal-9 knockout TG cultures showed delayed and reduced viral reactivation as compared with wild-type cultures, demonstrating the greater efficiency of CD8(+) T cells to inhibit virus reactivation in the absence of Gal-9. Moreover, the addition of recombinant Gal-9 to ex vivo TG cultures induced enhanced viral reactivation compared with untreated controls. Our results demonstrate that the host homeostatic mechanism mediated by Gal-9/Tim-3 interaction on CD8(+) T cells can influence the outcome of HSV-1 latent infection, and manipulating Gal-9 signals might represent therapeutic means to inhibit HSV-1 reactivation from latency.
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Affiliation(s)
- Pradeep B J Reddy
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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42
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Suryawanshi A, Veiga-Parga T, Rajasagi NK, Reddy PBJ, Sehrawat S, Sharma S, Rouse BT. Role of IL-17 and Th17 cells in herpes simplex virus-induced corneal immunopathology. J Immunol 2011; 187:1919-30. [PMID: 21765013 DOI: 10.4049/jimmunol.1100736] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
HSV-1 infection of the cornea leads to a blinding immunoinflammatory lesion of the eye termed stromal keratitis (SK). Recently, IL-17-producing CD4(+) T cells (Th17 cells) were shown to play a prominent role in many autoimmune conditions, but the role of IL-17 and/or of Th17 cells in virus immunopathology is unclear. In this study, we show that, after HSV infection of the cornea, IL-17 is upregulated in a biphasic manner with an initial peak production around day 2 postinfection and a second wave starting from day 7 postinfection with a steady increase until day 21 postinfection, a time point when clinical lesions are fully evident. Further studies demonstrated that innate cells, particularly γδ T cells, were major producers of IL-17 early after HSV infection. However, during the clinical phase of SK, the predominant source of IL-17 was Th17 cells that infiltrated the cornea only after the entry of Th1 cells. By ex vivo stimulation, the half fraction of IFN-γ-producing CD4(+) T cells (Th1 cells) were HSV specific, whereas very few Th17 cells responded to HSV stimulation. The delayed influx of Th17 cells in the cornea was attributed to the local chemokine and cytokine milieu. Finally, HSV infection of IL-17R knockout mice as well as IL-17 neutralization in wild-type mice showed diminished SK severity. In conclusion, our results show that IL-17 and Th17 cells contribute to the pathogenesis of SK, the most common cause of infectious blindness in the Western world.
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Affiliation(s)
- Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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43
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Mulik S, Sharma S, Suryawanshi A, Veiga-Parga T, Reddy PBJ, Rajasagi NK, Rouse BT. Activation of endothelial roundabout receptor 4 reduces the severity of virus-induced keratitis. J Immunol 2011; 186:7195-204. [PMID: 21572022 DOI: 10.4049/jimmunol.1100014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Antiangiogenic molecules exert a feedback control to restrain pathological angiogenesis, which includes physical binding or inhibition of angiogenic signaling in blood vessel endothelial cells. The latter is the case in which Slit2 ligand-dependent activation of the blood vessel endothelial cell receptor roundabout 4 (Robo4) occurs. In this study, we demonstrate that Robo4 receptors are upregulated following HSV infection of the eye on the majority of the new blood vessel endothelial cells that occur in the corneal stroma. However, expression levels of the ligand for Robo4 receptors, Slit2, was not significantly increased during the disease process, and the knockdown of Slit2 gene expression using lentiviral short hairpin RNAs had no effect on the extent of pathological angiogenesis. In contrast, providing additional Slit2 protein by subconjunctival administration resulted in significantly reduced angiogenesis. The Slit2 binding to Robo4 was shown to block the downstream vascular endothelial growth factor signaling molecules Arf 6 and Rac 1 and reduce the antiapoptotic molecule Bcl-xL in blood vessel endothelial cells. Our results indicate that augmenting the host Robo4/Slit2 system could provide a useful therapeutic approach to control pathological angiogenesis associated with HSV induced stromal keratitis.
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Affiliation(s)
- Sachin Mulik
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996-0845, USA
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Jagadeesh Reddy PB, Sehrawat S, Suryawanshi A, Rajasagi N, Rouse B. An influence of galectin-9/Tim-3 interaction on Herpes simplex virus-1 latency (105.14). The Journal of Immunology 2011. [DOI: 10.4049/jimmunol.186.supp.105.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
In this report, we show that the majority of CD8+T cells in the trigeminal ganglion (TG) of mice ocularly infected with HSV-1 express Tim-3, a molecule that delivers negative signals to CD8+T cells when it engages its ligand, Galectin 9 (Gal-9). Curiously Gal-9 glycoprotein is also up regulated in the TG both during the time when replicating virus is present as well during early viral latency. Accordingly it is conceivable that the efficiency of ganglionic CD8+T cell function could be influenced by Gal-9/Tim-3 interaction. In support of this we show that the activity of peptide stimulated CD8+T cells recovered from the TG of WT mice produced less IFN-γ, TNF-α and Granzyme B molecules in comparison to TG CD8+T cells of Gal-9KO mice. Differences in the number of productively and latently infected neuronal cells were also evident between WT and Gal-9KO mice. In vitro studies demonstrated that TG cell cultures of WT HSV-1 infected mice exposed to recombinant Gal-9 in the latent phase caused apoptosis of some CD8+T cells and induce viral reactivation. Our results demonstrate that the host homeostatic mechanism mediated by Gal-9/Tim-3 interaction on CD8+T cells can influence the outcome of latent HSV-1 infection. Neuronal cell function is likely to be preserved when host Gal-9 levels are low, since inhibitory effects on latency controlling CD8+T cells will be minimal.
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Affiliation(s)
| | | | | | | | - Barry Rouse
- 1pathobiology, University of Tennessee, Knoxville, TN
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45
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Veiga Parga T, Suryawanshi A, Rouse B. Controlling viral immunoinflammatory lesions by modulating aryl hydrocarbon receptor signaling (168.19). The Journal of Immunology 2011. [DOI: 10.4049/jimmunol.186.supp.168.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Ocular HSV-1 infection can cause a blinding CD4+ T cell orchestrated immunoinflammatory lesion called Stromal Keratitis (SK). Lesion severity is affected by the balance of proinflammatory effector T and regulatory T cells (Treg). In this report we show that expanding Treg activity using TCDD (2, 3, 7, 8- Tetrachlorodibenzo-p-dioxin), a ligand for the AhR receptor, results in the differential expansion of Treg in the eye and a resultant reduction in the extent of inflammatory lesions. Treatment of HSV infected mice with TCDD either on day 1 or day 5 pi, diminished the severity of SK lesions as well as the extent of corneal angiogenesis. The observed effect was mainly due to the changed balance of CD4+ T cells in the cornea that were IFN-γ or IL17 cytokine producers compared to those that were Foxp3+ Tregs. The change was explained by the significantly increased apoptosis of activated effector T cells but not of Tregs. Additionally, effector T cells from HSV infected mice proliferated significantly less in TCDD treated mice compared to control mice. Furthermore the addition of TCDD to the culture of antiCD3/CD28 stimulated naïve CD4+ T cells caused significant induction of Tregs. In conclusion, our results demonstrate that modulation of AhR signaling by TCDD represents a valuable approach to expand Treg and inhibit Th1 and Th17 cells to control HSV induced blinding lesions.
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Suryawanshi A, Veiga-Parga T, Rajasagi N, Rouse B. Role of IL-17 and Th17 cells in HSV-1 induced corneal immunopathology (154.10). The Journal of Immunology 2011. [DOI: 10.4049/jimmunol.186.supp.154.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Herpes Simplex Virus-1 (HSV) infection of the cornea leads to a blinding immuno-inflammatory lesion of the eye termed stromal keratitis (SK). Recently, IL-17 producing CD4 T cells (Th17) were shown to play an important role in many autoimmune as well as chronic inflammatory conditions, but the role of IL-17 and/or of Th17 cells in HSV mediated immunopathology is unclear. Here we show that, after HSV infection of the cornea, IL-17 is upregulated in a biphasic manner with an initial peak production around day 2 pi and a second peak at day 21 pi, a time point when clinical lesions are evident. Further studies demonstrated that innate cells particularly, γδ T cells, were the major producers of IL-17 early after HSV infection. However, during the clinical phase of SK, the predominant source of IL-17 was Th17 cells which infiltrated the cornea only after the entry of Th1 cells. The delayed influx of Th17 cells in the cornea was partly attributed to the local chemokine and cytokine milieu as well as the inhibitory effects of the cytokines produced by Th1 cells. Finally, HSV infection of the IL-17 receptor knockout mice, as well as IL-17 neutralization in WT mice showed diminished SK severity. This was attributed to the reduced level of pro-inflammatory cytokines and MMPs as well as reduced infiltration of neutrophils. In conclusion, our results show that IL-17 and Th-17 cells contribute to the pathogenesis of SK, the most common cause of infectious blindness in the western world.
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47
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Suryawanshi A, Mulik S, Sharma S, Reddy PBJ, Sehrawat S, Rouse BT. Ocular neovascularization caused by herpes simplex virus type 1 infection results from breakdown of binding between vascular endothelial growth factor A and its soluble receptor. J Immunol 2011; 186:3653-65. [PMID: 21325621 DOI: 10.4049/jimmunol.1003239] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The normal cornea is transparent, which is essential for normal vision, and although the angiogenic factor vascular endothelial growth factor A (VEGF-A) is present in the cornea, its angiogenic activity is impeded by being bound to a soluble form of the VEGF receptor-1 (sVR-1). This report investigates the effect on the balance between VEGF-A and sVR-1 that occurs after ocular infection with HSV, which causes prominent neovascularization, an essential step in the pathogenesis of the vision-impairing lesion, stromal keratitis. We demonstrate that HSV-1 infection causes increased production of VEGF-A but reduces sVR-1 levels, resulting in an imbalance of VEGF-A and sVR-1 levels in ocular tissues. Moreover, the sVR-1 protein made was degraded by the metalloproteinase (MMP) enzymes MMP-2, -7, and -9 produced by infiltrating inflammatory cells that were principally neutrophils. Inhibition of neutrophils, inhibition of sVR-1 breakdown with the MMP inhibitor marimastat, and the provision of exogenous recombinant sVR-1 protein all resulted in reduced angiogenesis. Our results make the novel observation that ocular neovascularization resulting from HSV infection involves a change in the balance between VEGF-A and its soluble inhibitory receptor. Future therapies aimed to increase the production and activity of sVR-1 protein could benefit the management of stromal keratitis, an important cause of human blindness.
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Affiliation(s)
- Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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48
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Rajasagi NK, Reddy PBJ, Suryawanshi A, Mulik S, Gjorstrup P, Rouse BT. Controlling herpes simplex virus-induced ocular inflammatory lesions with the lipid-derived mediator resolvin E1. J Immunol 2010; 186:1735-46. [PMID: 21187448 DOI: 10.4049/jimmunol.1003456] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Stromal keratitis (SK) is a chronic immunopathological lesion of the eye caused by HSV-1 infection and a common cause of blindness in humans. The inflammatory lesions are primarily perpetuated by neutrophils with the active participation of CD4(+) T cells. Therefore, targeting these immune cell types represents a potentially valuable form of therapy to reduce the severity of disease. Resolvin E1 (RvE1), an endogenous lipid mediator, was shown to promote resolution in several inflammatory disease models. In the current report, we determined whether RvE1 administration begun at different times after ocular infection of mice with HSV could influence the severity of SK lesions. Treatment with RvE1 significantly reduced the extent of angiogenesis and SK lesions that occurred. RvE1-treated mice had fewer numbers of inflammatory cells that included Th1 and Th17 cells as well as neutrophils in the cornea. The mechanisms by which RvE1 acts appear to be multiple. These included reducing the influx of neutrophils and pathogenic CD4(+) T cells, increasing production of the anti-inflammatory cytokine IL-10, and inhibitory effects on the production of proinflammatory mediators and molecules, such as IL-6, IFN-γ, IL-17, KC, VEGF-A, MMP-2, and MMP-9, that are involved in corneal neovascularization and SK pathogenesis. These findings are, to our knowledge, the first to show that RvE1 treatment could represent a novel approach to control lesion severity in a virally induced immunopathological disease.
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Affiliation(s)
- Naveen K Rajasagi
- Comparative and Experimental Medicine, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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Sehrawat S, Reddy PBJ, Rajasagi N, Suryawanshi A, Hirashima M, Rouse BT. Galectin-9/TIM-3 interaction regulates virus-specific primary and memory CD8 T cell response. PLoS Pathog 2010. [PMID: 20463811 DOI: 10.1371/journal.ppat.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
In this communication, we demonstrate that galectin (Gal)-9 acts to constrain CD8(+) T cell immunity to Herpes Simplex Virus (HSV) infection. In support of this, we show that animals unable to produce Gal-9, because of gene knockout, develop acute and memory responses to HSV that are of greater magnitude and better quality than those that occur in normal infected animals. Interestingly, infusion of normal infected mice with alpha-lactose, the sugar that binds to the carbohydrate-binding domain of Gal-9 limiting its engagement of T cell immunoglobulin and mucin (TIM-3) receptors, also caused a more elevated and higher quality CD8(+) T cell response to HSV particularly in the acute phase. Such sugar treated infected mice also had expanded populations of effector as well as memory CD8(+) T cells. The increased effector T cell responses led to significantly more efficient virus control. The mechanisms responsible for the outcome of the Gal-9/TIM-3 interaction in normal infected mice involved direct inhibitory effects on TIM-3(+) CD8(+) T effector cells as well as the promotion of Foxp3(+) regulatory T cell activity. Our results indicate that manipulating galectin signals, as can be achieved using appropriate sugars, may represent a convenient and inexpensive approach to enhance acute and memory responses to a virus infection.
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Affiliation(s)
- Sharvan Sehrawat
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, USA
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Sehrawat S, Reddy PBJ, Rajasagi N, Suryawanshi A, Hirashima M, Rouse BT. Galectin-9/TIM-3 interaction regulates virus-specific primary and memory CD8 T cell response. PLoS Pathog 2010; 6:e1000882. [PMID: 20463811 PMCID: PMC2865527 DOI: 10.1371/journal.ppat.1000882] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Accepted: 03/30/2010] [Indexed: 12/25/2022] Open
Abstract
In this communication, we demonstrate that galectin (Gal)-9 acts to constrain CD8(+) T cell immunity to Herpes Simplex Virus (HSV) infection. In support of this, we show that animals unable to produce Gal-9, because of gene knockout, develop acute and memory responses to HSV that are of greater magnitude and better quality than those that occur in normal infected animals. Interestingly, infusion of normal infected mice with alpha-lactose, the sugar that binds to the carbohydrate-binding domain of Gal-9 limiting its engagement of T cell immunoglobulin and mucin (TIM-3) receptors, also caused a more elevated and higher quality CD8(+) T cell response to HSV particularly in the acute phase. Such sugar treated infected mice also had expanded populations of effector as well as memory CD8(+) T cells. The increased effector T cell responses led to significantly more efficient virus control. The mechanisms responsible for the outcome of the Gal-9/TIM-3 interaction in normal infected mice involved direct inhibitory effects on TIM-3(+) CD8(+) T effector cells as well as the promotion of Foxp3(+) regulatory T cell activity. Our results indicate that manipulating galectin signals, as can be achieved using appropriate sugars, may represent a convenient and inexpensive approach to enhance acute and memory responses to a virus infection.
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Affiliation(s)
- Sharvan Sehrawat
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Pradeep B. J. Reddy
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Naveen Rajasagi
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Amol Suryawanshi
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Mitsuomi Hirashima
- Department of Immunology & Immunopathology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Barry T. Rouse
- Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, United States of America
- * E-mail:
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