1
|
Leung J, Chang M, Moore RE, Dagvadorj J, Sutterwala FS, Cassel SL. Gasdermin D and Gasdermin E Are Dispensable for Silica-Mediated IL-1β Secretion from Mouse Macrophages. Immunohorizons 2024; 8:679-687. [PMID: 39264735 DOI: 10.4049/immunohorizons.2400019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 08/15/2024] [Indexed: 09/14/2024] Open
Abstract
Silica crystals activate the NLRP3 inflammasome in macrophages, resulting in the caspase-1-dependent secretion of the proinflammatory cytokine IL-1β. Caspase-1-mediated cleavage of gasdermin D (GSDMD) triggers the formation of GSDMD pores, which drive pyroptotic cell death and facilitate the rapid release of IL-1β. However, the role of GSDMD in silica-induced lung injury is unclear. In this study, we show that although silica-induced lung injury is dependent on the inflammasome adaptor ASC and IL-1R1 signaling, GSDMD is dispensable for acute lung injury. Although the early rapid secretion of IL-1β in response to ATP and nigericin was GSDMD dependent, GSDMD was not required for IL-1β release at later time points. Similarly, secretion of IL-1β from macrophages in response to silica and alum proceeded in a GSDMD-independent manner. We further found that gasdermin E did not contribute to macrophage IL-1β secretion in the absence of GSDMD in vitro and was also not necessary for silica-induced acute lung injury in vivo. These findings demonstrate that GSDMD and gasdermin E are dispensable for IL-1β secretion in response to silica in vitro and in silica-induced acute lung injury in vivo.
Collapse
Affiliation(s)
- Jennifer Leung
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Michael Chang
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Richard E Moore
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Jargalsaikhan Dagvadorj
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Fayyaz S Sutterwala
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Suzanne L Cassel
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA
| |
Collapse
|
2
|
Alhobeira HA, Sharma A, Sharma A, Khan M, Lohani M, Khan S, Fahmy EK, Esmaeel SE, Agarwal A. Short-term, nonsurgical periodontal therapy boosts interleukin-12 levels and reduces oral cancer risk. Ir J Med Sci 2024; 193:1949-1955. [PMID: 38698250 DOI: 10.1007/s11845-024-03695-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 04/22/2024] [Indexed: 05/05/2024]
Abstract
BACKGROUND Cytokines, including interleukin-12 (IL-12), are proteins that regulate cell survival, proliferation, differentiation, and function. IL-12 is a heterodimeric proinflammatory cytokine. It possesses tumoricidal properties and promotes M1 macrophage polarization and IFN-γ production by T helper (Th1) cells, which in turn stimulates the antitumor cytotoxic cluster of eight positive (CD8+) and natural killer cells, therefore activating an effector immune response against tumor cells. MATERIALS AND METHODS Herein, the IL-2 levels of 60 patients with generalized chronic periodontitis (GCP) were assessed. Plaque index, gingival index, pocket probing depth, bleeding on probing percentage (BOP %), and clinical attachment loss were the clinical indicators reported. RESULTS Patients with GCP in the pretreatment group had substantially lower mean IL-12 levels than those in the post-treatment group. Short-term, nonsurgical treatment (NST) considerably improved periodontal indices and increased IL-12 levels, thereby reducing oral cancer risk. CONCLUSION NST is a cost-effective and accessible cancer prevention procedure for general dentists.
Collapse
Affiliation(s)
- Hazza A Alhobeira
- Department of Restorative Dentistry, College of Dentistry, University of Ha'il, Ha'il 55473, Saudi Arabia
| | - Anamika Sharma
- Department of Dentistry, LLRM Medical College, CCS University Meerut, Meerut, 250002, UP, India.
| | - Ananya Sharma
- Department of Dentistry, LLRM Medical College, CCS University Meerut, Meerut, 250002, UP, India
| | - Mahvish Khan
- Department of Biology, College of Science, University of Ha'il, Ha'il 55473, Saudi Arabia
| | - Mohtashim Lohani
- Medical Research Centre, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Saif Khan
- Department of Basic Dental and Medical Sciences, College of Dentistry, University of Ha'il, Ha'il 55473, Saudi Arabia
| | - Eslam K Fahmy
- Physiology Department, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia
| | - Safya E Esmaeel
- Physiology Department, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia
| | - Anshoo Agarwal
- Pathology Department, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia
| |
Collapse
|
3
|
Catarino JDS, de Oliveira RF, Silva MV, Sales-Campos H, de Vito FB, da Silva DAA, Naves LL, Oliveira CJF, Rodrigues DBR, Rodrigues V. Genetic variation of FcγRIIa induces higher uptake of Leishmania infantum and modulates cytokine production by adherent mononuclear cells in vitro. Front Immunol 2024; 15:1343602. [PMID: 38455048 PMCID: PMC10917923 DOI: 10.3389/fimmu.2024.1343602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/01/2024] [Indexed: 03/09/2024] Open
Abstract
Introduction Single nucleotide variations (SNVs) are specific genetic variations that commonly occur in a population and often do not manifest phenotypically. However, depending on their location and the type of nucleotide exchanged, an SNV can alter or inhibit the function of the gene in which it occurs. Immunoglobulin G (IgG) receptor genes have exhibited several polymorphisms, including rs1801274, which is found in the FcgRIIa gene. The replacement of A with T results in a Histidine (H) to Arginine (R) substitution, altering the affinity of the IgG receptor for IgG subtypes and C-reactive protein (CRP). In this study, we analyzed rs1801274 and its functional implications concerning L. Infantum uptake and cytokine production. Methods We genotyped 201 individuals from an endemic area for visceral leishmaniasis to assess the presence of rs1801274 using Taqman probes for a candidate gene study. Additionally, we included seventy individuals from a non-endemic area for a functional study. Subsequently, we isolated and cultivated one-week adherent mononuclear cells (AMCs) derived from the peripheral blood of participants residing in the non-endemic region in the presence of L. infantum promastigotes, with and without antigen-specific IgG and/or CRP. We analyzed the rate of phagocytosis and the production of nitric oxide (NO), tumor necrosis factor (TNF)-a, interleukin (IL)-10, IL-12 p70, IL-1b, IL- 6, and IL-8 in the culture supernatants. Results and discussion In participants from the endemic region, the A/G (H/R isoform) heterozygous genotype was significantly associated with susceptibility to the disease. Furthermore, SNVs induced a change in the phagocytosis rate in an opsonin-dependent manner. Opsonization with IgG increased the production of IL-10, TNF-a, and IL-6 in AMCs with the H/R isoform, followed by a decrease in NO production. The results presented here suggest that the rs1801274 polymorphism is linked to a higher susceptibility to visceral leishmaniasis.
Collapse
Affiliation(s)
- Jonatas da Silva Catarino
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Rafael Faria de Oliveira
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Marcos Vinicius Silva
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Helioswilton Sales-Campos
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, GO, Brazil
| | - Fernanda Bernadelli de Vito
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Djalma Alexandre Alves da Silva
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Lucila Langoni Naves
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Carlo José Freire Oliveira
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Denise Bertulucci Rocha Rodrigues
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Virmondes Rodrigues
- Laboratory of Immunology, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
- National Institute of Neuroimmuno Modulation, Rio de Janeiro, Brazil
| |
Collapse
|
4
|
Hoang TX, Kim JY. Regulatory macrophages in solid organ xenotransplantation. KOREAN JOURNAL OF TRANSPLANTATION 2023; 37:229-240. [PMID: 38115165 PMCID: PMC10772277 DOI: 10.4285/kjt.23.0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/10/2023] [Accepted: 11/24/2023] [Indexed: 12/21/2023] Open
Abstract
Due to a critical organ shortage, pig organs are being explored for use in transplantation. Differences between species, particularly in cell surface glycans, can trigger elevated immune responses in xenotransplantation. To mitigate the risk of hyperacute rejection, genetically modified pigs have been developed that lack certain glycans and express human complement inhibitors. Nevertheless, organs from these pigs may still provoke stronger inflammatory and innate immune reactions than allotransplants. Dysregulation of coagulation and persistent inflammation remain obstacles in the transplantation of pig organs into primates. Regulatory macrophages (Mregs), known for their anti-inflammatory properties, could offer a potential solution. Mregs secrete interleukin 10 and transforming growth factor beta, thereby suppressing immune responses and promoting the development of regulatory T cells. These Mregs are typically induced via the stimulation of monocytes or macrophages with macrophage colony-stimulating factor and interferon gamma, and they conspicuously express the stable marker dehydrogenase/reductase 9. Consequently, understanding the precise mechanisms governing Mreg generation, stability, and immunomodulation could pave the way for the therapeutic use of Mregs generated in vitro. This approach has the potential to reduce the required dosages and durations of anti-inflammatory and immunosuppressive medications in preclinical and clinical settings.
Collapse
Affiliation(s)
- Thi Xoan Hoang
- Department of Life Science, Gachon University, Seongnam, Korea
| | - Jae Young Kim
- Department of Life Science, Gachon University, Seongnam, Korea
| |
Collapse
|
5
|
Chen J, Chen C, Ma S, Li J, Li M, Huang Q. An immunomodulatory role of Fc receptor γ chain independent of FcγR ligation by IgG in acute neuroinflammation triggered by MPTP intoxication. Neurochem Int 2023; 171:105638. [PMID: 37923297 DOI: 10.1016/j.neuint.2023.105638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/22/2023] [Accepted: 10/31/2023] [Indexed: 11/07/2023]
Abstract
Aberrant microglial activation is a prominent feature of neuroinflammation, which is implicated in the pathogenesis of neurological disorders. Fc receptor common γ-chain (FcRγ), one of the two immunoreceptor tyrosine-based activation motif-bearing adaptor proteins, is abundantly expressed in microglia. It couples with different receptors, such as receptors for the Fc portion of IgG. In this study, we observed increased FcRγ expression along with increased IgG-binding during acute neuroinflammation triggered by MPTP intoxication, where adaptive immune responses should not be involved. Notably, FcRγ was expressed not only in the cell membrane but also in the cytoplasm in the activated microglia. FcRγ deficiency exacerbated microglial activation, pro-inflammatory factor upregulation, nigral dopaminergic neuronal loss and motor deficits, implicating a beneficial role of FcRγ in this model. Blockade of Fcγ receptor ligation by IgG in mice by Endoglycosidase S treatment, a bacterial endo-β-N-acetylglucosaminidase cleaving specifically the Asn297-linked glycan of IgG, or by using the mice deficient in mature B cells (muMT) with IgG production defects, did not show similar phenotypes to those observed in FcRγ-deficient mice, indicating that the beneficial effect mediated by FcRγ did not depend on FcγR ligation by IgG. Further, FcRγ knockout aggravated the expression and activation of STAT1 in microglia, suggesting FcRγ modulated neuroinflammation by dampening STAT1 signaling. Collectively, these results revealed that FcRγ-associated receptors could function as negative regulators of neuroinflammation and dopaminergic neurodegeneration.
Collapse
Affiliation(s)
- Junguo Chen
- Guangdong Provincial Key Laboratory of Brain Function and Disease and Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, No. 74 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Congmin Chen
- Guangdong Provincial Key Laboratory of Brain Function and Disease and Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, No. 74 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Shanshan Ma
- Guangdong Provincial Key Laboratory of Brain Function and Disease and Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, No. 74 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Junyu Li
- Guangdong Provincial Key Laboratory of Brain Function and Disease and Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, No. 74 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Mingtao Li
- Guangdong Provincial Key Laboratory of Brain Function and Disease and Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, No. 74 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Qiaoying Huang
- Guangdong Provincial Key Laboratory of Brain Function and Disease and Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, No. 74 Zhongshan 2nd Road, Guangzhou, 510080, China.
| |
Collapse
|
6
|
Eskiocak YC, Ayyildiz ZO, Gunalp S, Korkmaz A, Helvaci DG, Dogan Y, Sag D, Wingender G. The Ca2+ concentration impacts the cytokine production of mouse and human lymphoid cells and the polarization of human macrophages in vitro. PLoS One 2023; 18:e0282037. [PMID: 36827279 PMCID: PMC9956017 DOI: 10.1371/journal.pone.0282037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 02/06/2023] [Indexed: 02/25/2023] Open
Abstract
Various aspects of the in vitro culture conditions can impact the functional response of immune cells. For example, it was shown that a Ca2+ concentration of at least 1.5 mM during in vitro stimulation is needed for optimal cytokine production by conventional αβ T cells. Here we extend these findings by showing that also unconventional T cells (invariant Natural Killer T cells, mucosal-associated invariant T cells, γδ T cells), as well as B cells, show an increased cytokine response following in vitro stimulation in the presence of elevated Ca2+ concentrations. This effect appeared more pronounced with mouse than with human lymphoid cells and did not influence their survival. A similarly increased cytokine response due to elevated Ca2+ levels was observed with primary human monocytes. In contrast, primary human monocyte-derived macrophages, either unpolarized (M0) or polarized into M1 or M2 macrophages, displayed increased cell death in the presence of elevated Ca2+ concentrations. Furthermore, elevated Ca2+ concentrations promoted phenotypic M1 differentiation by increasing M1 markers on M1 and M2 macrophages and decreasing M2 markers on M2 macrophages. However, the cytokine production of macrophages, again in contrast to the lymphoid cells, was unaltered by the Ca2+ concentration. In summary, our data demonstrate that the Ca2+ concentration during in vitro cultures is an important variable to be considered for functional experiments and that elevated Ca2+ levels can boost cytokine production by both mouse and human lymphoid cells.
Collapse
Affiliation(s)
| | - Zeynep Ozge Ayyildiz
- Izmir Biomedicine and Genome Center (IBG), Balcova/Izmir, Turkey
- Department of Genome Sciences and Molecular Biotechnology, Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Balcova/Izmir, Turkey
| | - Sinem Gunalp
- Izmir Biomedicine and Genome Center (IBG), Balcova/Izmir, Turkey
- Department of Genome Sciences and Molecular Biotechnology, Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Balcova/Izmir, Turkey
| | - Asli Korkmaz
- Izmir Biomedicine and Genome Center (IBG), Balcova/Izmir, Turkey
- Department of Genome Sciences and Molecular Biotechnology, Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Balcova/Izmir, Turkey
| | | | - Yavuz Dogan
- Department of Microbiology, Faculty of Medicine, Dokuz Eylul University, Balcova/Izmir, Turkey
| | - Duygu Sag
- Izmir Biomedicine and Genome Center (IBG), Balcova/Izmir, Turkey
- Department of Genome Sciences and Molecular Biotechnology, Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Balcova/Izmir, Turkey
- Department of Medical Biology, Faculty of Medicine, Dokuz Eylul University, Balcova/Izmir, Turkey
| | - Gerhard Wingender
- Izmir Biomedicine and Genome Center (IBG), Balcova/Izmir, Turkey
- * E-mail:
| |
Collapse
|
7
|
A subset of antibodies targeting citrullinated proteins confers protection from rheumatoid arthritis. Nat Commun 2023; 14:691. [PMID: 36754962 PMCID: PMC9908943 DOI: 10.1038/s41467-023-36257-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 01/20/2023] [Indexed: 02/10/2023] Open
Abstract
Although elevated levels of anti-citrullinated protein antibodies (ACPAs) are a hallmark of rheumatoid arthritis (RA), the in vivo functions of these antibodies remain unclear. Here, we have expressed monoclonal ACPAs derived from patients with RA, and analyzed their functions in mice, as well as their specificities. None of the ACPAs showed arthritogenicity nor induced pain-associated behavior in mice. However, one of the antibodies, clone E4, protected mice from antibody-induced arthritis. E4 showed a binding pattern restricted to skin, macrophages and dendritic cells in lymphoid tissue, and cartilage derived from mouse and human arthritic joints. Proteomic analysis confirmed that E4 strongly binds to macrophages and certain RA synovial fluid proteins such as α-enolase. The protective effect of E4 was epitope-specific and dependent on the interaction between E4-citrullinated α-enolase immune complexes with FCGR2B on macrophages, resulting in increased IL-10 secretion and reduced osteoclastogenesis. These findings suggest that a subset of ACPAs have therapeutic potential in RA.
Collapse
|
8
|
Mamun AA, Uddin MS, Perveen A, Jha NK, Alghamdi BS, Jeandet P, Zhang HJ, Ashraf GM. Inflammation-targeted nanomedicine against brain cancer: From design strategies to future developments. Semin Cancer Biol 2022; 86:101-116. [PMID: 36084815 DOI: 10.1016/j.semcancer.2022.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 08/08/2022] [Accepted: 08/21/2022] [Indexed: 02/07/2023]
Abstract
Brain cancer is an aggressive type of cancer with poor prognosis. While the immune system protects against cancer in the early stages, the tumor exploits the healing arm of inflammatory reactions to accelerate its growth and spread. Various immune cells penetrate the developing tumor region, establishing a pro-inflammatory tumor milieu. Additionally, tumor cells may release chemokines and cytokines to attract immune cells and promote cancer growth. Inflammation and its associated mechanisms in the progression of cancer have been extensively studied in the majority of solid tumors, especially brain tumors. However, treatment of the malignant brain cancer is hindered by several obstacles, such as the blood-brain barrier, transportation inside the brain interstitium, inflammatory mediators that promote tumor growth and invasiveness, complications in administering therapies to tumor cells specifically, the highly invasive nature of gliomas, and the resistance to drugs. To resolve these obstacles, nanomedicine could be a potential strategy that has facilitated advancements in diagnosing and treating brain cancer. Due to the numerous benefits provided by their small size and other features, nanoparticles have been a prominent focus of research in the drug-delivery field. The purpose of this article is to discuss the role of inflammatory mediators and signaling pathways in brain cancer as well as the recent advances in understanding the nano-carrier approaches for enhancing drug delivery to the brain in the treatment of brain cancer.
Collapse
Affiliation(s)
- Abdullah Al Mamun
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong Special Administrative Region of China
| | - Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh; Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Mirzapur Pole, Saharanpur, Uttar Pradesh, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh 201310, India; Department of Biotechnology, School of Applied & Life Sciences, Uttaranchal University, Dehradun 248007, India
| | - Badrah S Alghamdi
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia; Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; The Neuroscience Research Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Philippe Jeandet
- University of Reims Champagne-Ardenne, Research Unit, Induced Resistance and Plant Bioprotection, EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, PO Box 1039, 51687 Reims Cedex 2, France
| | - Hong-Jie Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong Special Administrative Region of China
| | - Ghulam Md Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, University City, Sharjah 27272, United Arab Emirates.
| |
Collapse
|
9
|
Reyes-Cruz EY, Limón-Flores AY, González-Mireles AF, Rodríguez-Serrato MA, López-Monteon A, Ramos-Ligonio A. Effect of immunosuppression by UV-B radiation on components of the innate immune response in skin lesions with Leishmania mexicana: Effect of UVB on the innate immune response in cutaneous infection by L. mexicana. Acta Trop 2022; 226:106272. [PMID: 34896324 DOI: 10.1016/j.actatropica.2021.106272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/30/2021] [Accepted: 12/07/2021] [Indexed: 11/01/2022]
Abstract
Cutaneous leishmaniasis is the most common form of leishmaniasis in humans, factors such as poverty, poor housing, inadequate domestic hygiene, malnutrition, mobility, and occupational exposure are risk factors associated with the condition, however, there are few studies focused on determining the immune mechanism involved in the resolution of cutaneous leishmaniasis caused by the species Leishmania mexicana, as well as possible environmental factors such as solar radiation, which could contribute to its establishment. through mechanisms immunosuppressants, of which to date is unknown. In this study, the effect of UV-B light was evaluated as a risk factor affecting components of the innate immune response 3 days after infection with L. mexicana. A delayed-type hypersensitivity reaction (DTH) was used to evaluate immunosuppression induced by UV-B light. Through a histological analysis, the skin lesions of the mice (Hematoxylin & Eosin) were evaluated, the presence of mast cells and their level of degranulation (toluidine blue staining), the presence of IL-10+ and MOMA2+ cells were analyzed by immunohistochemistry and finally, the cytokine profile was evaluated by qPCR in the skin lesions tissue. An alteration in the architecture of the tissue was observed, as well as a greater number of mast cells, both complete and degranulated, as well as an increase in IL-10+ and MOMA2+ cells in the skin lesions of the mice that were irradiated and subsequently infected, when compared with the lesions of infected mice (P> 0.0001), immunomodulation was also observed in the profile of cytokines expressed between both groups analyzed. This is the first study to demonstrate the effects of UV-B radiation on components of the innate immune response at short times of infection by L. mexicana.
Collapse
|
10
|
There Is Strength in Numbers: Quantitation of Fc Gamma Receptors on Murine Tissue-Resident Macrophages. Int J Mol Sci 2021; 22:ijms222212172. [PMID: 34830050 PMCID: PMC8620503 DOI: 10.3390/ijms222212172] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 11/17/2022] Open
Abstract
Many of the effector functions of antibodies rely on the binding of antibodies/immune complexes to cellular Fcγ receptors (FcγRs). Since the majority of innate immune effector cells express both activating and inhibitory Fc receptors, the outcome of the binding of immune complexes to cells of a given population is influenced by the relative affinities of the respective IgG subclasses to these receptors, as well as by the numbers of activating and inhibitory FcγRs on the cell surface. A group of immune cells that has come into focus more recently is the various subsets of tissue-resident macrophages. The central functions of FcγRs on tissue macrophages include the clearance of opsonized pathogens, the removal of small immune complexes from the circulation and the depletion of antibody-opsonized cells in the therapy of autoimmunity and cancer. Despite these essential functions of FcγRs on tissue-resident macrophages, an in-depth quantification of FcγRs is lacking. Thus, the aim of our current study was to quantify the various Fcγ receptors on macrophages in murine liver, lung, kidney, brain, skin and spleen. Our study identified a pronounced heterogeneity between FcγR expression patterns of the different tissue macrophages, which may reflect their specialized functions within their unique niches in different organ environments.
Collapse
|
11
|
Lu J, Xie L, Sun S. The inhibitor miR-21 regulates macrophage polarization in an experimental model of chronic obstructive pulmonary disease. Tob Induc Dis 2021; 19:69. [PMID: 34539308 PMCID: PMC8409097 DOI: 10.18332/tid/140095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 06/21/2021] [Accepted: 07/08/2021] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION In chronic obstructive pulmonary disease (COPD), macrophages play an indispensable role. In the lung tissues of COPD patients and smokers, macrophages can be observed to polarize towards M2 phenotype. The molecular mechanism of this process is unclear, and it has not been fully elucidated in COPD. METHODS We bought laboratory animals [C57BL/6 and miR-21-/- C57BL/6(F1)] from the Jackson Laboratory. The model of COPD mice was established by cigarette smoke (CS) exposure combined with intraperitoneal injection of cigarette smoke extract (CSE). RT-PCR detected the expression levels of inflammatory factors and markers associated with M1 and M2 macrophages. The ratio of M2 macrophages to M1 macrophages was detected by immunohistochemical staining. RESULTS The level of miR-21 was increased in RAW264.7 cells intervened by CSE and in lung tissue and bone marrow-derived macrophages (BMDMs) from COPD mice. CSE can gradually over time increase the level of miR-21. The proportion of M2 macrophages to M1 macrophages had a positive correlation with miR-21. Knockdowning miR-21 can reduce lung tissue damage. CSE also increased the levels of related inflammatory factors and markers associated with M2 macrophages, and an miR-21 inhibitor can reverse this conversion. CONCLUSIONS We confirmed that CSE can lead to macrophage transformation to the M2 phenotype and an increase in the expression level of miR-21. Knockdown of the miR-21 gene could inhibit the transformation of macrophages to the M2 phenotype in COPD.
Collapse
Affiliation(s)
- JunJuan Lu
- Department of Respiratory Medicine, The Third XiangYa Hospital of Central South University, Changsha, People's Republic of China
| | - LiHua Xie
- Department of Respiratory Medicine, The Third XiangYa Hospital of Central South University, Changsha, People's Republic of China
| | - ShengHua Sun
- Department of Respiratory Medicine, The Third XiangYa Hospital of Central South University, Changsha, People's Republic of China
| |
Collapse
|
12
|
Khanam A, Yu J, Zempleni J. Class A scavenger receptor-1/2 facilitates the uptake of bovine milk exosomes in murine bone marrow-derived macrophages and C57BL/6J mice. Am J Physiol Cell Physiol 2021; 321:C607-C614. [PMID: 34378992 DOI: 10.1152/ajpcell.00222.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bovine milk exosomes (BMEs) are being explored in drug delivery despite their rapid elimination by macrophages. We aimed at identifying the BME transporter in murine bone marrow-derived macrophages (BMDMs). Fluorophore-labeled BMEs were used in transport studies in BMDMs from C57BL/6J and class A scavenger receptor type 1/2 (CASR-1/2) knockout mice and tissue accumulation in macrophage-depleted C57BL/6J mice. Parametric and non-parametric statistics tests for pairwise and multiple comparisons were used. Chemical inhibitors of phagocytosis by cytochalasin D led to a 69 ± 18% decrease in BME uptake compared to controls (P ˂ 0.05), whereas inhibitors of endocytic pathways other than phagocytosis had a modest effect on uptake (P > 0.05). Inhibitors of class A scavenger receptors (CASRs) including CASR-1/2 caused a 70% decrease in BME uptake (P ˂ 0.05). The uptake of BMEs by BMDMs from CASR-1/2 knockout mice was smaller by 58 ± 23% compared to wild-type controls (P ˂ 0.05). Macrophage depletion by clodronate caused a more than 44% decrease in BME uptake in the spleen and lungs (P ˂ 0.05) whereas the decrease observed in liver was not statistically significant. In conclusion, CASR-1/2 facilitates the uptake of BMEs in BMDMs and C57BL/6J mice.
Collapse
Affiliation(s)
- Afsana Khanam
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Jiujiu Yu
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Janos Zempleni
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| |
Collapse
|
13
|
Roychowdhury A, Jondhale M, Saldanha E, Ghosh D, Kumar Panda C, Chandrani P, Mukherjee N. Landscape of toll-like receptors expression in tumor microenvironment of triple negative breast cancer (TNBC): Distinct roles of TLR4 and TLR8. Gene 2021; 792:145728. [PMID: 34022297 DOI: 10.1016/j.gene.2021.145728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 05/16/2021] [Accepted: 05/17/2021] [Indexed: 12/11/2022]
Abstract
TNBC is the most aggressive and hormone receptor-negative subtype of breast cancer with molecular heterogeneity in bulk tumors hindering effective treatment. Toll-like receptors (TLRs) have the potential to ignite diverse immune responses in the tumor microenvironment (TME). This encouraged us to screen their transcript expression in the publically available TCGA datasets. Reported molecular subtypes of TNBC may represent different TMEs and we observed differentially expressed TLRs (DETs) i.e. TLR3/4/6/8/9 have unique expression pattern in the TNBC subtypes, particularly in Immunomodulatory (IM) TNBC subtype. We then dissected expression of the DETs in immune and other components of the TME. TLR4 and TLR8 showed significant (p-value ≤ 0.05) negative partial correlation with tumor purity compared to other DETs. Interestingly, TLR4 and TLR8 expression showed a significant (adjusted p-value ≤ 0.05) correlation with different subsets of immune infiltrating cells having the highest correlation with monocytes/macrophage/dendritic cell populations mediating both innate and adaptive response in TNBC. The co-expression network identified genes correlated with these immune cells. Further, GSEA analysis of co-expressed genes showed a significant association of TLR8 partners with 'Peptide ligand binding', 'Gά-signaling', and 'Cytokine-cytokine interaction' while TLR4 associated genes correlated with 'Adaptive immune system' and 'Systemic lupus erythematosus' interactome. Finally, the expression of TLR4 protein was validated in a panel of TNBC cell lines. TLR4 expression in chemoresponsive TNBC was also validated in TNBC cell lines upon Paclitaxel (PTX) treatment. Collectively, the present study identified specific DETs in TNBC and discovered a prospective role of TLR4 and TLR8 in the maintenance of tumor-immune-microenvironment.
Collapse
Affiliation(s)
- Anirban Roychowdhury
- Department of Oncogene Regulation, Chittaranjan National Cancer Institute, Kolkata, India
| | - Mayur Jondhale
- Department of Molecular and Cellular Biology, National Institute for Research on Reproductive Health, Mumbai, India
| | - Elveera Saldanha
- Medical Oncology Molecular Laboratory, Medical Oncology Department, Tata Memorial Hospital, Mumbai, India
| | - Deblina Ghosh
- Department of Life Science & Biotechnology, Jadavpur University, Kolkata, India
| | - Chinmay Kumar Panda
- Department of Oncogene Regulation, Chittaranjan National Cancer Institute, Kolkata, India
| | - Pratik Chandrani
- Medical Oncology Molecular Laboratory, Medical Oncology Department, Tata Memorial Hospital, Mumbai, India; Centre for Computational Biology, Bioinformatics and Crosstalk Laboratory, ACTREC-Tata MemorialCentre, Navi Mumbai, India; Homi Bhabha National Institute, Mumbai, India
| | - Nupur Mukherjee
- Department of Molecular and Cellular Biology, National Institute for Research on Reproductive Health, Mumbai, India.
| |
Collapse
|
14
|
Goncalves R, Christensen SM, Mosser DM. Humoral immunity in leishmaniasis - Prevention or promotion of parasite growth? Cytokine X 2020; 2:100046. [PMID: 33604564 PMCID: PMC7885864 DOI: 10.1016/j.cytox.2020.100046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/11/2020] [Accepted: 09/30/2020] [Indexed: 10/31/2022] Open
Abstract
Leishmaniasis can present as a "spectrum" of clinical outcomes. There is evidence that these divergent clinical outcomes are attributable to genetic differences in the human host [1] as well the species of infecting parasite [2]. The spectrum of disease has largely been described by defining the polar opposites of T cell immune responses. In the mouse model, a TH1 immune response is associated with low numbers of Leishmania parasites in lesions, whereas a TH2 immune response has been associated with unrestricted parasite growth. In the present work, we revisit leishmaniasis and seek to better define the clinical spectrum as a function of divergent humoral immune responses. We describe examples in human, canine, and even some murine models of leishmaniasis that reveal a direct correlation between high anti-parasite antibody responses and unrestricted parasite growth. Therefore, we propose that the spectral nature of this disease may be due to quantitative and qualitative differences in the antibodies that are produced during disease. In human visceral leishmaniasis, a decrease in anti-parasite antibody levels may actually predict disease resolution. Thus, rather than defining this disease as a simple TH1/TH2 dichotomy, we propose that clinical leishmaniasis depends on the degree of humoral immunity, with high IgG predicting parasite persistence. These observations have obvious implications for vaccine development in leishmaniasis, and they may extend to other diseases caused by intracellular pathogens.
Collapse
Affiliation(s)
- Ricardo Goncalves
- Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Stephen M Christensen
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States
| | - David M Mosser
- Department of Cell Biology and Molecular Genetics and the Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20742, United States
| |
Collapse
|
15
|
Xu F, Ma Y, Huang W, Gao J, Guo M, Li J, Kong L, Liang G, Du R, Xu Q, Wu X. Typically inhibiting USP14 promotes autophagy in M1-like macrophages and alleviates CLP-induced sepsis. Cell Death Dis 2020; 11:666. [PMID: 32820146 PMCID: PMC7441392 DOI: 10.1038/s41419-020-02898-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 01/07/2023]
Abstract
Macrophages, with diverse functions and variable phenotypes, are considered as an important executor of inflammatory diseases. And it has been proved that autophagy is deeply connected with the development of inflammation, while the exact regulatory mechanism still remains unclear, and the application of autophagy regulators in anti-inflammation needs to be further confirmed. Here, we firstly verified that neochromine S5 (hereinafter referred to as S5) significantly inhibited M1-like macrophage polarization with decrease of the proinflammatory cytokines and downregulation of NF-κB and STAT1 signals. Then, in vivo experiments demonstrated S5 improved cecal ligation and puncture (CLP)-induced sepsis specially based on the regulation of M1-like macrophages. Mechanistic studies indicated that S5 treatment dramatically upregulated cellular autophagy in M1-like macrophage. Furthermore, by multiple methods, S5 was revealed to directly bind with ubiquitin-specific proteases 14 (USP14) at Ser404, Phe405, and Cys414 by hydrogen bond to inhibit its deubiquitinating activity, and block USP14-TRAF6 (TNF receptor associated factor 6) interaction, subsequently promoting ubiquitination of Beclin1, interrupting Beclin1-Bcl2 interaction, and accumulating the autophagosome in macrophages, which finally resulted in the blockade of M1-like macrophage polarization. Animal experiments also confirmed the protection of S5 in CLP mice was dependent on activation of macrophage autophagy. What's more, as a novel USP14 inhibitor, S5 exhibited higher efficiency and safety than IU1, the known USP14 inhibitor. Therefore, this study has demonstrated that typically inhibiting USP14 promotes autophagy in M1-like macrophages and alleviates CLP-induced sepsis. Moreover, we provide a new candidate compound, S5, for sensitizing autophagy to interfere with the macrophage inflammation.
Collapse
Affiliation(s)
- Fang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Yuxiang Ma
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Wei Huang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Jian Gao
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Mengmeng Guo
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Jianxin Li
- grid.41156.370000 0001 2314 964XState Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Lingdong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Guang Liang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China ,grid.268099.c0000 0001 0348 3990Chemical Biology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou Zhejiang, 325035 China
| | - Ronghui Du
- grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, 22 Hankou Road, Nanjing, 210093 China
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| | - Xudong Wu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023 China
| |
Collapse
|
16
|
Bournazos S, Gupta A, Ravetch JV. The role of IgG Fc receptors in antibody-dependent enhancement. Nat Rev Immunol 2020; 20:633-643. [PMID: 32782358 PMCID: PMC7418887 DOI: 10.1038/s41577-020-00410-0] [Citation(s) in RCA: 332] [Impact Index Per Article: 83.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2020] [Indexed: 02/07/2023]
Abstract
Antibody-dependent enhancement (ADE) is a mechanism by which the pathogenesis of certain viral infections is enhanced in the presence of sub-neutralizing or cross-reactive non-neutralizing antiviral antibodies. In vitro modelling of ADE has attributed enhanced pathogenesis to Fcγ receptor (FcγR)-mediated viral entry, rather than canonical viral receptor-mediated entry. However, the putative FcγR-dependent mechanisms of ADE overlap with the role of these receptors in mediating antiviral protection in various viral infections, necessitating a detailed understanding of how this diverse family of receptors functions in protection and pathogenesis. Here, we discuss the diversity of immune responses mediated upon FcγR engagement and review the available experimental evidence supporting the role of FcγRs in antiviral protection and pathogenesis through ADE. We explore FcγR engagement in the context of a range of different viral infections, including dengue virus and SARS-CoV, and consider ADE in the context of the ongoing SARS-CoV-2 pandemic. Antibody-dependent enhancement (ADE) has been described as a mechanism that contributes to the pathogenesis of dengue virus infection. Limited evidence also suggests that it can also occur in other viral infections. Here, the authors explore the history of the ADE phenomenon, discuss the diversity of Fc effector functions and consider its potential relevance in the context of SARS-CoV-2 infection.
Collapse
Affiliation(s)
- Stylianos Bournazos
- Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY, USA
| | - Aaron Gupta
- Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY, USA
| | - Jeffrey V Ravetch
- Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY, USA.
| |
Collapse
|
17
|
Ahmed I, Ismail N. M1 and M2 Macrophages Polarization via mTORC1 Influences Innate Immunity and Outcome of Ehrlichia Infection. JOURNAL OF CELLULAR IMMUNOLOGY 2020; 2:108-115. [PMID: 32719831 DOI: 10.33696/immunology.2.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Human monocytic ehrlichiosis (HME) is an emerging life-threatening tick-borne disease caused by the obligate intracellular bacterium Ehrlichia chaffeensis. HME is often presented as a nonspecific flu-like illness characterized by presence of fever, headache, malaise, and myalgia. However, in some cases the disease can evolve to a severe form, which is commonly marked by acute liver injury followed by multi-organ failure and toxic shock-like syndrome [1-3]. Macrophages and monocytes are the major target cells for Ehrlichia, although this bacterium can infect other cell types such as hepatocytes and endothelial cells [4]. In this article, we discuss how macrophages polarization to M1 or M2 phenotypes dictate the severity of ehrlichiosis and the outcome of infection. We will also discuss the potential mechanisms that regulate such polarization.
Collapse
Affiliation(s)
- Ibrahim Ahmed
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Nahed Ismail
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| |
Collapse
|
18
|
Zhang H, Cao N, Yang Z, Fang X, Yang X, Li H, Hong Z, Ji Z. Bilobalide Alleviated Dextran Sulfate Sodium-Induced Experimental Colitis by Inhibiting M1 Macrophage Polarization Through the NF-κB Signaling Pathway. Front Pharmacol 2020; 11:718. [PMID: 32670051 PMCID: PMC7326085 DOI: 10.3389/fphar.2020.00718] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 04/30/2020] [Indexed: 12/17/2022] Open
Abstract
Bilobalide, a unique Ginkgo biloba constituent has attracted significant interest as a novel therapeutic option for neuronal protection. However, there is paucity of data on its effect on colitis. This work sought to evaluate the effect of bilobalide on macrophage polarization in vitro and dextran sulfate sodium (DSS) induced colitis in vivo. Through the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and annexin V/PI assay, it was shown that bilobalide has no significant toxicity on macrophage. Lipopolysaccharide (LPS) and interferon-gamma (IFN-γ) induced macrophage activation and polarization were significantly suppressed by bilobalide as indicated by reduced expression of cytokine, major histocompatibility complex II (MHC-II), and CD11c. Pertinently, the signaling pathway study showed that the phosphorylation of p65 and its nuclear translocation were decreased while STAT1 was not affected. In DSS-treated mice, administration (i.g) of three doses of bilobalide na\mely 1.25 mg/kg (low dose group), 2.5 mg/kg (medium dose group), and 5 mg/kg (high dose group) was performed daily starting from day 1 to day 10. Medium and high dose bilobalide markedly reduced the inflammation of colitis proved via elevation of bodyweight, decrement in disease activity index (DAI), alleviation of colon damage as well as reduction in activity of colon tissue myeloperoxidase activity. In accordance with the in vitro results, the levels of inflammatory cytokines such as interleukin 6 (IL-6), IL-1β, and tumor necrosis factor (TNF-α) in serum as well as messenger RNA (mRNA) expression in colon were obviously reduced in the bilobalide treated groups. Also, factor nuclear factor kappa B (NF-κB) signaling pathway was decreased significantly by bilobalide treatment. Collectively, these results indicated that administration of bilobalide improved experimental colitis via inhibition of M1 macrophage polarization through the NF-κB signaling pathway. Thus, bilobalide could act as a potential drug for the treatment of inflammatory bowel disease (IBD) in the not-too-distant future.
Collapse
Affiliation(s)
- Heng Zhang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Nengqi Cao
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Zhilong Yang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Xingchao Fang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Xinyu Yang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Hao Li
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Zhi Hong
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Zhenling Ji
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| |
Collapse
|
19
|
Liu B, Lu Y, Chen X, Muthuraj PG, Li X, Pattabiraman M, Zempleni J, Kachman SD, Natarajan SK, Yu J. Protective Role of Shiitake Mushroom-Derived Exosome-Like Nanoparticles in D-Galactosamine and Lipopolysaccharide-Induced Acute Liver Injury in Mice. Nutrients 2020; 12:nu12020477. [PMID: 32069862 PMCID: PMC7071144 DOI: 10.3390/nu12020477] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 12/12/2022] Open
Abstract
Fulminant hepatic failure (FHF) is a rare, life-threatening liver disease with a poor prognosis. Administration of D-galactosamine (GalN) and lipopolysaccharide (LPS) triggers acute liver injury in mice, simulating many clinical features of FHF in humans; therefore, this disease model is often used to investigate potential therapeutic interventions to treat FHF. Recently, suppression of the nucleotide-binding domain and leucine-rich repeat related (NLR) family, pyrin domain containing 3 (NLRP3) inflammasome, was shown to alleviate the severity of GalN/LPS-induced liver damage in mice. Therefore, the goal of this study was to find dietary exosome-like nanoparticles (ELNs) with therapeutic potential in curbing FHF by suppressing the NLRP3 inflammasome. Seven commonly consumed mushrooms were used to extract ELNs. These mushrooms were found to contain ELNs composed of RNAs, proteins, and lipids. Among these mushroom-derived ELNs, only shiitake mushroom-derived ELNs (S-ELNs) substantially inhibited NLRP3 inflammasome activation by preventing inflammasome formation in primary macrophages. S-ELNs also suppressed the secretion of interleukin (IL)-6, as well as both protein and mRNA levels of the Il1b gene. Remarkably, pre-treatment with S-ELNs protected mice from GalN/LPS-induced acute liver injury. Therefore, S-ELNs, identified as potent new inhibitors of the NLRP3 inflammasome, represent a promising class of agents with the potential to combat FHF.
Collapse
Affiliation(s)
- Baolong Liu
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Yizhu Lu
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Xingyi Chen
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Philma Glora Muthuraj
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Xingzhi Li
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Mahesh Pattabiraman
- Department of Chemistry, University of Nebraska-Kearney, Kearney, NE 68849, USA;
| | - Janos Zempleni
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Stephen D. Kachman
- Department of Statistics, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Sathish Kumar Natarajan
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
| | - Jiujiu Yu
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (B.L.); (Y.L.); (X.C.)
- Correspondence: ; Tel.: +1-402-472-7013
| |
Collapse
|
20
|
Wosinska L, Cotter PD, O'Sullivan O, Guinane C. The Potential Impact of Probiotics on the Gut Microbiome of Athletes. Nutrients 2019; 11:E2270. [PMID: 31546638 PMCID: PMC6835687 DOI: 10.3390/nu11102270] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/05/2019] [Accepted: 09/19/2019] [Indexed: 12/19/2022] Open
Abstract
There is accumulating evidence that physical fitness influences the gut microbiome and as a result, promotes health. Indeed, exercise-induced alterations in the gut microbiome can influence health parameters crucial to athletic performance, specifically, immune function, lower susceptibility to infection, inflammatory response and tissue repair. Consequently, maintenance of a healthy gut microbiome is essential for an athlete's health, training and performance. This review explores the effect of exercise on the microbiome while also investigating the effect of probiotics on various potential consequences associated with over-training in athletes, as well as their associated health benefits.
Collapse
Affiliation(s)
- Laura Wosinska
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland.
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
- APC Microbiome Ireland, T12 YT20 Cork, Ireland.
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
- APC Microbiome Ireland, T12 YT20 Cork, Ireland.
| | - Orla O'Sullivan
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
- APC Microbiome Ireland, T12 YT20 Cork, Ireland.
| | - Caitriona Guinane
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland.
| |
Collapse
|
21
|
Chandrasekaran P, Izadjoo S, Stimely J, Palaniyandi S, Zhu X, Tafuri W, Mosser DM. Regulatory Macrophages Inhibit Alternative Macrophage Activation and Attenuate Pathology Associated with Fibrosis. THE JOURNAL OF IMMUNOLOGY 2019; 203:2130-2140. [PMID: 31541024 DOI: 10.4049/jimmunol.1900270] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 08/14/2019] [Indexed: 12/24/2022]
Abstract
Diversity and plasticity are the hallmarks of macrophages. The two most well-defined macrophage subsets are the classically activated macrophages (CAMϕs) and the IL-4-derived alternatively activated macrophages (AAMϕs). Through a series of studies, we previously identified and characterized a distinct population of macrophages with immunoregulatory functions, collectively termed regulatory macrophages (RMϕs). Although considerable advances have been made in understanding these various macrophage subsets, it is not known whether macrophages of one activation state can influence the other. In this study, we examined whether RMϕs capable of inhibiting inflammatory responses of CAMϕs could also inhibit AAMϕs and their profibrotic responses. Our results demonstrated that RMϕs significantly dampened the alternate activation phenotype of AAMϕs generated in vitro and intrinsically occurring AAMϕs from TACI-/- macrophages. Further, RMϕs inhibited AAMϕ-promoted arginase activity and fibroblast proliferation in vitro. This inhibition occurred regardless of the strength, duration, and mode of alternative activation and was only partially dependent on IL-10. In the chlorhexidine gluconate-induced peritoneal fibrosis model, AAMϕs worsened the fibrosis, but RMϕs rescued mice from AAMϕ-mediated pathological conditions. Taken together, our study demonstrates that RMϕs are a specialized subset of macrophages with a nonredundant role in limiting overt proregenerative functions of AAMϕs, a role distinct from their well-defined role of suppression of inflammatory responses by CAMϕs.
Collapse
Affiliation(s)
- Prabha Chandrasekaran
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742.,Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20740
| | - Salman Izadjoo
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742.,Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20740
| | - Jessica Stimely
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742.,Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20740
| | - Senthilkumar Palaniyandi
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20470; and
| | - Xiaoping Zhu
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20470; and
| | - Wagner Tafuri
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - David M Mosser
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742; .,Maryland Pathogen Research Institute, University of Maryland, College Park, MD 20740
| |
Collapse
|
22
|
Hu G, Guo M, Xu J, Wu F, Fan J, Huang Q, Yang G, Lv Z, Wang X, Jin Y. Nanoparticles Targeting Macrophages as Potential Clinical Therapeutic Agents Against Cancer and Inflammation. Front Immunol 2019; 10:1998. [PMID: 31497026 PMCID: PMC6712945 DOI: 10.3389/fimmu.2019.01998] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 08/07/2019] [Indexed: 12/11/2022] Open
Abstract
With the development of nanotechnology, significant progress has been made in the design, and manufacture of nanoparticles (NPs) for use in clinical treatments. Recent increases in our understanding of the central role of macrophages in the context of inflammation and cancer have reinvigorated interest in macrophages as drug targets. Macrophages play an integral role in maintaining the steady state of the immune system and are involved in cancer and inflammation processes. Thus, NPs tailored to accurately target macrophages have the potential to transform disease treatment. Herein, we first present a brief background information of NPs as drug carriers, including but not limited to the types of nanomaterials, their biological properties and their advantages in clinical application. Then, macrophage effector mechanisms and recent NPs-based strategies aimed at targeting macrophages by eliminating or re-educating macrophages in inflammation and cancer are summarized. Additionally, the development of nanocarriers targeting macrophages for disease diagnosis is also discussed. Finally, the significance of macrophage-targeting nanomedicine is highlighted, with the goal of facilitating future clinical translation.
Collapse
Affiliation(s)
- Guorong Hu
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Mengfei Guo
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Juanjuan Xu
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Feng Wu
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Jinshuo Fan
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Qi Huang
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Guanghai Yang
- Department of Thoracic Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Zhilei Lv
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xuan Wang
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Jin
- Key Laboratory of Respiratory Diseases of the Ministry of Health, Department of Respiratory and Critical Care Medicine, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
23
|
Abstract
The nucleotide-binding domain and leucine-rich repeat-containing family, pyrin domain-containing 3 (NLRP3) inflammasome is a key regulator of innate immune responses, and its aberrant activation is implicated in the pathogenesis of many diseases such as Alzheimer's disease and type 2 diabetes. Targeting the NLRP3 inflammasome could hold promise to combat these complex diseases, but therapies specifically inhibiting the NLRP3 inflammasome have not been developed for patient treatment. The current study aimed to identify food-borne exosome-like nanoparticles (ELNs) that inhibit NLRP3 inflammasome activity. Nine vegetables or fruits were selected to extract ELNs, which were examined for their inhibitory effects on activation of the NLRP3 inflammasome in primary macrophages. Although most of the tested ELNs posed minimal impacts, the ELNs from ginger rhizomes (G-ELNs) strongly inhibited NLRP3 inflammasome activation. The G-ELNs contained lipids, proteins, and RNAs and were easily taken up by macrophages. G-ELN treatment suppressed pathways downstream of inflammasome activation including caspase1 autocleavage, interleukin (IL)-1β and IL-18 secretion, and pyroptotic cell death. Apoptotic speck protein containing a caspase recruitment domain (ASC) oligomerization and speck formation assays indicated that G-ELNs blocked assembly of the NLRP3 inflammasome. The lipids in G-ELNs, rather than the RNAs or proteins, were responsible for the inhibitory activity observed. Together, the data suggested G-ELNs as new potent agents that block NLRP3 inflammasome assembly and activation. The unique features of G-ELNs including biomolecule protection and tissue bioavailability should facilitate the development of G-ELN-based therapy to target the NLRP3 inflammasome in the disease settings.
Collapse
Affiliation(s)
- Xingyi Chen
- Department of Nutrition and Health Sciences , University of Nebraska Lincoln , 230 Filley Hall , Lincoln , Nebraska 68583-0922 , United States
| | - You Zhou
- Center for Biotechnology , University of Nebraska Lincoln , E117 Beadle Center, Lincoln , Nebraska 68588-0665 , United States
| | - Jiujiu Yu
- Department of Nutrition and Health Sciences , University of Nebraska Lincoln , 230 Filley Hall , Lincoln , Nebraska 68583-0922 , United States
| |
Collapse
|
24
|
Zhu Y, Fan S, Lu Y, Wei Y, Tang J, Yang Y, Li F, Chen Q, Zheng J, Liu X. Quercetin confers protection of murine sepsis by inducing macrophage M2 polarization via the TRPM2 dependent calcium influx and AMPK/ATF3 activation. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
|
25
|
Christensen SM, Belew AT, El-Sayed NM, Tafuri WL, Silveira FT, Mosser DM. Host and parasite responses in human diffuse cutaneous leishmaniasis caused by L. amazonensis. PLoS Negl Trop Dis 2019; 13:e0007152. [PMID: 30845223 PMCID: PMC6405045 DOI: 10.1371/journal.pntd.0007152] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/11/2019] [Indexed: 02/01/2023] Open
Abstract
Diffuse cutaneous leishmaniasis (DCL) is a rare form of leishmaniasis where parasites grow uncontrolled in diffuse lesions across the skin. Meta-transcriptomic analysis of biopsies from DCL patients infected with Leishmania amazonensis demonstrated an infiltration of atypical B cells producing a surprising preponderance of the IgG4 isotype. DCL lesions contained minimal CD8+ T cell transcripts and no evidence of persistent TH2 responses. Whereas localized disease exhibited activated (so-called M1) macrophage presence, transcripts in DCL suggested a regulatory macrophage (R-Mϕ) phenotype with higher levels of ABCB5, DCSTAMP, SPP1, SLAMF9, PPARG, MMPs, and TM4SF19. The high levels of parasite transcripts in DCL and the remarkable uniformity among patients afforded a unique opportunity to study parasite gene expression in this disease. Patterns of parasite gene expression in DCL more closely resembled in vitro parasite growth in resting macrophages, in the absence of T cells. In contrast, parasite gene expression in LCL revealed 336 parasite genes that were differently upregulated, relative to DCL and in vitro macrophage growth, and these transcripts may represent transcripts that are produced by the parasite in response to host immune pressure.
Collapse
Affiliation(s)
- Stephen M. Christensen
- Department of Cell Biology and Molecular Genetics and the Maryland Pathogen Research Institute, University of Maryland, College Park, MD United States of America
| | - Ashton T. Belew
- Department of Cell Biology and Molecular Genetics and the Maryland Pathogen Research Institute, University of Maryland, College Park, MD United States of America
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD United States of America
| | - Najib M. El-Sayed
- Department of Cell Biology and Molecular Genetics and the Maryland Pathogen Research Institute, University of Maryland, College Park, MD United States of America
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD United States of America
| | - Wagner L. Tafuri
- Departamento de Patologia Geral, Universidade Federal de Minas Geras, Belo Horizonte, Brazil
| | - Fernando T. Silveira
- Evandro Chagas Institute, Tropical Medicine Nucleus, Federal University of Pará, Belém, PA Brazil
| | - David M. Mosser
- Department of Cell Biology and Molecular Genetics and the Maryland Pathogen Research Institute, University of Maryland, College Park, MD United States of America
| |
Collapse
|
26
|
Sun P, Williams M, Nagabhushana N, Jani V, Defang G, Morrison BJ. NK Cells Activated through Antibody-Dependent Cell Cytotoxicity and Armed with Degranulation/IFN-γ Production Suppress Antibody-dependent Enhancement of Dengue Viral Infection. Sci Rep 2019; 9:1109. [PMID: 30710094 PMCID: PMC6358599 DOI: 10.1038/s41598-018-36972-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/02/2018] [Indexed: 12/20/2022] Open
Abstract
Antibody (Ab)-dependent enhancement (ADE) is a hypothesized mechanism of increased disease severity during secondary dengue virus (DENV) infection. This study investigates Ab-dependent cell cytotoxicity (ADCC) in counteracting ADE. In our system, DENV and DENV-immune sera were added to peripheral blood mononuclear cells (PBMCs), and ADE and NK cell activation were simultaneously monitored. ADE was detected in monocytes and a concurrent activation of NK cells was observed. Activated NK cells expressed IFN-γ and CD107a. IFN-γ was detected at 24 hours (24 h) followed by a rapid decline; CD107a expression peaked at 48 h and persisted for >7 days. Optimal activation of NK cells required the presence of enhancement serum together with ADE-affected monocytes and soluble factors, suggesting the coexistence of the counteractive ADCC Abs, in the same ADE-serum, capable of strongly promoting NK cell activation. The function of NK cells against ADE was demonstrated using a depletion assay. NK cell-depleted PBMCs had increased ADE as compared to whole PBMCs. Conversely, adding activated NK cells back into the NK-depleted-PBMCs or to purified monocytes decreased ADE. Blocking IFN-γ expression also increased ADE. The study suggests that under ADE conditions, NK cells can be activated by ADCC Abs and can control the magnitude of ADE.
Collapse
Affiliation(s)
- Peifang Sun
- Henry Jackson Foundation, Bethesda, MD, USA.
| | - Maya Williams
- Viral and Rickettsial Diseases Department, Infectious Diseases Directorate, Naval Medical Research Center, Silver Spring, MD, USA
| | | | | | - Gabriel Defang
- Viral and Rickettsial Diseases Department, Infectious Diseases Directorate, Naval Medical Research Center, Silver Spring, MD, USA
| | - Brian J Morrison
- Viral and Rickettsial Diseases Department, Infectious Diseases Directorate, Naval Medical Research Center, Silver Spring, MD, USA
| |
Collapse
|
27
|
Wang J, Li Y, Shen Y, Liang J, Li Y, Huang Y, Liu X, Jiang D, Yang S, Zhao Y, Yang K. PDL1 Fusion Protein Protects Against Experimental Cerebral Malaria via Repressing Over-Reactive CD8 + T Cell Responses. Front Immunol 2019; 9:3157. [PMID: 30693001 PMCID: PMC6339951 DOI: 10.3389/fimmu.2018.03157] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 12/21/2018] [Indexed: 01/22/2023] Open
Abstract
Cerebral malaria (CM), mainly caused by Plasmodium falciparum (P. f.), is one of the most lethal complications of severe malaria. As immunopathology mediated by brain-infiltrating CD8+ T cells is the major pathogenesis of CM, there is no safe and efficient treatment clinically focused on CD8+ T cells. New methods are needed to protect the host from injury. As evidence has shown that programmed death-1 (PD-1) is one of the most efficient immunomodulatory molecules, we constructed two soluble fusion proteins, PDL1-IgG1Fc and PDL2-IgG1Fc, to enhance PD-1/PDL signaling pathways in innate and adaptive immune cells, including macrophages and CD8+ T cells. Firstly, we confirmed that PD-1 signal pathway deficiency led to higher levels of CD8+ T cell proliferation and shorter survival time in PD-1-deficient (Pdcd1−/−) mice than WT mice. Secondly, PDL1-IgG1Fc-treated mice exhibited a more prolonged survival time than control groups. Moreover, PDL1-IgG1Fc was observed to ameliorate blood-brain barrier (BBB) disruption by limiting the over-reactive CD8+ T cell cytotoxicity during experimental cerebral malaria (ECM). Further studies found thatPDL1-IgG1Fc-treated macrophages showed significant suppression in macrophage M1 polarization and their antigen presentation capability to CD8+ T cells. In conclusion, our results demonstrated that the administration of PDL1-IgG1Fc in the early stage before ECM onset has an obvious effect on the maintenance of immune microenvironment homeostasis in the brain and is deemed a promising candidate for protection against CM in the future.
Collapse
Affiliation(s)
- Jun Wang
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China.,Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Yue Li
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Yan Shen
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Jiao Liang
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Yinghui Li
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Yuxiao Huang
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Xuewu Liu
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Dongbo Jiang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Shuya Yang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Ya Zhao
- Department of Medical Microbiology and Parasitology, Fourth Military Medical University, Xi'an, China
| | - Kun Yang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
28
|
Bloemendaal FM, Koelink PJ, van Schie KA, Rispens T, Peters CP, Buskens CJ, van der Bilt JD, Bemelman WA, Korf H, Sabino JG, Ponsioen CY, Te Velde AA, D'Haens GRAM, Vermeire S, van den Brink GR, Wildenberg ME. TNF-anti-TNF Immune Complexes Inhibit IL-12/IL-23 Secretion by Inflammatory Macrophages via an Fc-dependent Mechanism. J Crohns Colitis 2018; 12:1122-1130. [PMID: 29860435 DOI: 10.1093/ecco-jcc/jjy075] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/02/2018] [Accepted: 05/28/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS We have recently shown that the mode of action of IgG1 anti-tumour necrosis factor [TNF] antibodies in inflammatory bowel disease [IBD] requires Fcγ-receptor [FcγR] engagement on macrophages. Here we examine the effect of Fcγ-receptor signalling by anti-TNF on macrophage IL-12/IL-23 secretion. METHODS Cytokine production by human inflammatory macrophages was assessed at the level of RNA and protein. TNF-anti-TNF immune complex formation was determined by size-exclusion chromatography and signalling visualized by immunofluorescence. IL-12/IL-23p40 was measured in CD14+ lamina propria cells from IBD patients. RESULTS Infliximab and adalimumab potently suppressed IL-12/IL-23 production by inflammatory macrophages, but Fab' fragment certolizumab did not. IL-12/IL-23 suppression depended on Syk activity and was mediated at the level of IL-12/IL-23p40 mRNA. Etanercept, a soluble TNF receptor fused to an Fc-region, did not inhibit IL-12/L-23 secretion, suggesting that the presence of an Fc-region was not sufficient. Infliximab and adalimumab formed immune complexes with soluble TNF whereas etanercept did not, suggesting that FcγR-mediated suppression of IL-12/IL-23 required the formation of immune complexes. Indeed, non-specific IgG1 immune complexes, but not uncomplexed IgG1, similarly suppressed IL-12/IL-23 secretion. Finally, infliximab significantly decreased IL-12/IL-23p40 production in myeloid cells isolated from the lamina propria of IBD patients. CONCLUSIONS TNF-anti-TNF antibody immune complexes potently inhibit IL-12/IL-23 expression by inflammatory macrophages. Our data suggest that anti-TNFs and antibodies against IL-12/IL-23 may therefore have partially overlapping modes of action in patients with IBD.
Collapse
Affiliation(s)
- Felicia M Bloemendaal
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Pim J Koelink
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Karin A van Schie
- Department of Immunopathology, Sanquin Research Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Theo Rispens
- Department of Immunopathology, Sanquin Research Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Charlotte P Peters
- Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Christianne J Buskens
- Department of Surgery, Academic Medical Center, University of Amsterdam. The Netherlands
| | - Jarmila D van der Bilt
- Department of Surgery, Academic Medical Center, University of Amsterdam. The Netherlands.,Department of Surgery, Flevoziekenhuis, Almere, The Netherlands
| | - Willem A Bemelman
- Department of Surgery, Academic Medical Center, University of Amsterdam. The Netherlands
| | - Hannelie Korf
- Translational Research Center for Gastrointestinal Disorders [TARGID], Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
| | - João G Sabino
- Translational Research Center for Gastrointestinal Disorders [TARGID], Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
| | - Cyriel Y Ponsioen
- Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Anje A Te Velde
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Geert R A M D'Haens
- Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Severine Vermeire
- Translational Research Center for Gastrointestinal Disorders [TARGID], Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
| | - Gijs R van den Brink
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Manon E Wildenberg
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
29
|
Kozicky L, Sly LM. Assessment of Antibody-based Drugs Effects on Murine Bone Marrow and Peritoneal Macrophage Activation. J Vis Exp 2017. [PMID: 29364214 DOI: 10.3791/56689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Macrophages are phagocytic innate immune cells, which initiate immune responses to pathogens and contribute to healing and tissue restitution. Macrophages are equally important in turning off inflammatory responses. We have shown that macrophages stimulated with intravenous immunoglobulin (IVIg) can produce high amounts of the anti-inflammatory cytokine, interleukin 10 (IL-10), and low levels of pro-inflammatory cytokines in response to bacterial lipopolysaccharides (LPS). IVIg is a polyvalent antibody, primarily immunoglobulin Gs (IgGs), pooled from the plasma of more than 1,000 blood donors. It is used to supplement antibodies in patients with immune deficiencies or to suppress immune responses in patients with autoimmune or inflammatory conditions. Infliximab, a therapeutic anti-tumor necrosis factor alpha (TNFα) antibody, has also been shown to activate macrophages to produce IL-10 in response to inflammatory stimuli. IVIg and other antibody-based biologics can be tested to determine their effects on macrophage activation. This paper describes methods for derivation, stimulation, and assessment of murine bone marrow macrophages activated by antibodies in vitro and murine peritoneal macrophages activated with antibodies in vivo. Finally, we demonstrate the use of western blotting to determine the contribution of specific cell signaling pathways to anti-inflammatory macrophage activity. These protocols can be used with genetically modified mice, to determine the effect of a specific protein(s) on anti-inflammatory macrophage activation. These techniques can also be used to assess whether specific biologics may act by changing macrophages to an IL-10-producing anti-inflammatory activation state that reduces inflammatory responses in vivo. This can provide information on the role of macrophage activation in the efficacy of biologics during disease models in mice, and provide insight into a potential new mechanism of action in people. Conversely, this may caution against the use of specific antibody-based biologics to treat infectious disease, particularly if macrophages play an important role in host defense against that infection.
Collapse
Affiliation(s)
- Lisa Kozicky
- British Columbia Children's Hospital Research Institute, University of British Columbia;
| | - Laura M Sly
- British Columbia Children's Hospital Research Institute, University of British Columbia
| |
Collapse
|
30
|
Vellozo NS, Pereira-Marques ST, Cabral-Piccin MP, Filardy AA, Ribeiro-Gomes FL, Rigoni TS, DosReis GA, Lopes MF. All- Trans Retinoic Acid Promotes an M1- to M2-Phenotype Shift and Inhibits Macrophage-Mediated Immunity to Leishmania major. Front Immunol 2017; 8:1560. [PMID: 29204144 PMCID: PMC5698282 DOI: 10.3389/fimmu.2017.01560] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/31/2017] [Indexed: 01/01/2023] Open
Abstract
As key cells, able to host and kill Leishmania parasites, inflammatory monocytes/macrophages are potential vaccine and therapeutic targets to improve immune responses in Leishmaniasis. Macrophage phenotypes range from M1, which express NO-mediated microbial killing, to M2 macrophages that might help infection. Resistance to Leishmaniasis depends on Leishmania species, mouse strain, and both innate and adaptive immunity. C57BL/6 (B6) mice are resistant and control infection, whereas Leishmania parasites thrive in BALB/c mice, which are susceptible to develop cutaneous lesions in the course of infection with Leishmania major, but not upon infection with Leishmania braziliensis. Here, we investigated whether a deficit in early maturation of inflammatory monocytes into macrophages in BALB/c mice underlies increased susceptibility to L. major versus L. braziliensis parasites. We show that, after infection with L. braziliensis, monocytes are recruited to peritoneum, differentiate into macrophages, and develop an M1 phenotype able to produce proinflammatory cytokines in both B6 and BALB/c mice. Nonetheless, more mature macrophages from B6 mice expressed inducible NO synthase (iNOS) and higher NO production in response to L. braziliensis parasites, whereas BALB/c mice developed macrophages expressing an incomplete M1 phenotype. By contrast, monocytes recruited upon L. major infection gave rise to immature macrophages that failed to induce an M1 response in BALB/c mice. Overall, these results are consistent with the idea that resistance to Leishmania infection correlates with improved maturation of macrophages in a mouse-strain and Leishmania-species dependent manner. All-trans retinoic acid (ATRA) has been proposed as a therapy to differentiate immature myeloid cells into macrophages and help immunity to tumors. To prompt monocyte to macrophage maturation upon L. major infection, we treated B6 and BALB/c mice with ATRA. Unexpectedly, treatment with ATRA reduced proinflammatory cytokines, iNOS expression, and parasite killing by macrophages. Moreover, ATRA promoted an M1 to M2 transition in bone marrow-derived macrophages from both strains. Therefore, ATRA uncouples macrophage maturation and development of M1 phenotype and downmodulates macrophage-mediated immunity to L. major parasites. Cautions should be taken for the therapeutic use of ATRA, by considering direct effects on innate immunity to intracellular pathogens.
Collapse
Affiliation(s)
- Natália S Vellozo
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sâmara T Pereira-Marques
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariela P Cabral-Piccin
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alessandra A Filardy
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávia L Ribeiro-Gomes
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Thaís S Rigoni
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - George A DosReis
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto Nacional para Pesquisa Translacional em Saúde e Ambiente na Região Amazônica, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Rio de Janeiro, Brazil
| | - Marcela F Lopes
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
31
|
Abstract
The antiviral activity of antibodies reflects the bifunctional properties of these molecules. While the Fab domains mediate highly specific antigenic recognition to block virus entry, the Fc domain interacts with diverse types of Fcγ receptors (FcγRs) expressed on the surface of effector leukocytes to induce the activation of distinct immunomodulatory pathways. Fc-FcγR interactions are tightly regulated to control IgG-mediated inflammation and immunity and are largely determined by the structural heterogeneity of the IgG Fc domain, stemming from differences in the primary amino acid sequence of the various subclasses, as well as the structure and composition of the Fc-associated N-linked glycan. Engagement of specific FcγR types on effector leukocytes has diverse consequences that affect several aspects of innate and adaptive immunity. In this review, we provide an overview of the complexity of FcγR-mediated pathways, discussing their role in the in vivo protective activity of anti-HIV-1 antibodies. We focus on recent studies on broadly neutralizing anti-HIV-1 antibodies that revealed that Fc-FcγR interactions are required to achieve full therapeutic activity through clearance of IgG-opsonized virions and elimination of HIV-infected cells. Manipulation of Fc-FcγR interactions to specifically activate distinct FcγR-mediated pathways has the potential to affect downstream effector responses, influencing thereby the in vivo protective activity of anti-HIV-1 antibodies; a strategy that has already been successfully applied to other IgG-based therapeutics, substantially improving their clinical efficacy.
Collapse
Affiliation(s)
- Stylianos Bournazos
- The Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY, USA
| | - Jeffrey V Ravetch
- The Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY, USA
| |
Collapse
|
32
|
Abstract
A key determinant for the survival of organisms is their capacity to recognize and respond efficiently to foreign antigens. This is largely accomplished by the orchestrated activity of the innate and adaptive branches of the immune system. Antibodies are specifically generated in response to foreign antigens, facilitating thereby the specific recognition of antigens of almost infinite diversity. Receptors specific for the Fc domain of antibodies, Fc receptors, are expressed on the surface of the various myeloid leukocyte populations and mediate the binding and recognition of antibodies by innate leukocytes. By directly linking the innate and the adaptive components of immunity, Fc receptors play a central role in host defense and the maintenance of tissue homeostasis through the induction of diverse proinflammatory, anti-inflammatory, and immunomodulatory processes that are initiated upon engagement by the Fc domain. In this chapter, we discuss the mechanisms that regulate Fc domain binding to the various types of Fc receptors and provide an overview of the astonishing diversity of effector functions that are mediated through Fc-FcR interactions on myeloid cells. Lastly, we discuss the impact of FcR-mediated interactions in the context of IgG-mediated inflammation, autoimmunity, susceptibility to infection, and responsiveness to antibody-based therapeutics.
Collapse
|
33
|
Bournazos S, Ravetch JV. Diversification of IgG effector functions. Int Immunol 2017; 29:303-310. [PMID: 28472280 PMCID: PMC5890892 DOI: 10.1093/intimm/dxx025] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 04/26/2017] [Indexed: 12/16/2022] Open
Abstract
IgG is the major immunoglobulin class produced during an immune response against foreign antigens and efficiently provides protection through its bifunctional nature. While the Fab domains confer highly specific recognition of the antigen, the Fc domain mediates a wide range of effector functions that modulate several aspects of innate and adaptive immunity. Engagement of the various types of Fcγ receptors (FcγRs) by an IgG Fc domain can activate distinct immunomodulatory pathways with pleiotropic functional consequences for several leukocyte types. Fc effector functions are not limited to phagocytosis and cytotoxicity of IgG-opsonized targets but exhibit remarkable diversity and include modulation of leukocyte activity and survival, cytokine and chemokine expression, maturation of antigen-presenting cells, antigen processing and presentation, B-cell selection and IgG affinity maturation, as well as regulation of IgG production. These functions are initiated upon specific interactions of the Fc domain with the various types of FcγRs-a process that is largely determined by the structural heterogeneity of the IgG Fc domain. Modulation of the Fc-associated glycan structure and composition along with differences in the primary amino acid sequence among the IgG subclasses represent the two main diversification mechanisms of the Fc domain that generate a spectrum of Fc domain phenotypes with distinct affinity for the various FcγR types and differential capacity to activate immunomodulatory pathways.
Collapse
Affiliation(s)
- Stylianos Bournazos
- Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Jeffrey V Ravetch
- Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY 10065, USA
| |
Collapse
|
34
|
Rostam HM, Reynolds PM, Alexander MR, Gadegaard N, Ghaemmaghami AM. Image based Machine Learning for identification of macrophage subsets. Sci Rep 2017; 7:3521. [PMID: 28615717 PMCID: PMC5471192 DOI: 10.1038/s41598-017-03780-z] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 05/03/2017] [Indexed: 11/29/2022] Open
Abstract
Macrophages play a crucial rule in orchestrating immune responses against pathogens and foreign materials. Macrophages have remarkable plasticity in response to environmental cues and are able to acquire a spectrum of activation status, best exemplified by pro-inflammatory (M1) and anti-inflammatory (M2) phenotypes at the two ends of the spectrum. Characterisation of M1 and M2 subsets is usually carried out by quantification of multiple cell surface markers, transcription factors and cytokine profiles. These approaches are time-consuming, require large numbers of cells and are resource intensive. In this study, we used machine learning algorithms to develop a simple and fast imaging-based approach that enables automated identification of different macrophage functional phenotypes using their cell size and morphology. Fluorescent microscopy was used to assess cell morphology of different cell types which were stained for nucleus and actin distribution using DAPI and phalloidin respectively. By only analysing their morphology we were able to identify M1 and M2 phenotypes effectively and could distinguish them from naïve macrophages and monocytes with an average accuracy of 90%. Thus we suggest high-content and automated image analysis can be used for fast phenotyping of functionally diverse cell populations with reasonable accuracy and without the need for using multiple markers.
Collapse
Affiliation(s)
- Hassan M Rostam
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, NG7 2RD, UK.,Department of Biology, University of Garmian, Kalar, Kurdistan, Iraq
| | - Paul M Reynolds
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Morgan R Alexander
- Advanced Materials and Healthcare Technologies Division, School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Nikolaj Gadegaard
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK.
| | - Amir M Ghaemmaghami
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, NG7 2RD, UK.
| |
Collapse
|
35
|
Nicorandil modulated macrophages activation and polarization via NF-κb signaling pathway. Mol Immunol 2017; 88:69-78. [PMID: 28609713 DOI: 10.1016/j.molimm.2017.06.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/26/2017] [Accepted: 06/03/2017] [Indexed: 12/25/2022]
Abstract
Nicorandil, a drug with both nitrate-like and ATP-sensitive potassium (KATP) channel-activating properties, has been well demonstrated in various aspects of myocardial infarction (MI), especially in inhibiting cell apoptosis and increasing coronary flow. However, the role of nicorandil in regulating inflammation and angiogenesis following myocardial infarction is still unrevealed. In the present study, we explored the effect of nicorandil on macrophage phenotype transition and inflammation regulation and the potential underlying mechanisms. For the phenotype transition and phagocytosis ability of macrophages detection, flow cytometry analysis was used. The inflammation factors were measured with ELISA and qRT-PCR. Western blot was used to assess the levels of NF-κb and its target genes and VEGF expression. The tube formation ability of endothelial cells was examined on matrigel. We discovered that nicorandil can obviously inhibit the differentiation of monocytes into mature macrophages and decrease M1 phenotype transition both in peritoneal macrophages and cultured macrophage cell line in normal or hypoxia and serum deprivation (H/SD) conditions. Meanwhile, nicorandil can induce an anti-inflammatory M2 phenotype. Thereby, nicorandil regulated macrophages switching to M1/M2 status. Our data further showed that NF-κb and the expression of its target genes were pivotal players in the regulation of macrophages phenotype. Besides, we also showed that nicorandil can promote the tube formation and VEGF expression in endothelial cells. We concluded that nicorandil may serve as an effective modulator of NF-κb signaling pathway during the pathogenesis of MI via regulating M1/M2 status and promoting angiogenesis.
Collapse
|
36
|
Lu J, Xie L, Liu C, Zhang Q, Sun S. PTEN/PI3k/AKT Regulates Macrophage Polarization in Emphysematous mice. Scand J Immunol 2017; 85:395-405. [PMID: 28273403 DOI: 10.1111/sji.12545] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/02/2017] [Indexed: 12/27/2022]
Affiliation(s)
- J. Lu
- Department of Respiratory Medicine; the Third XiangYa Hospital of Central South University; Changsha Hunan Province China
| | - L. Xie
- Department of Respiratory Medicine; the Third XiangYa Hospital of Central South University; Changsha Hunan Province China
| | - C. Liu
- Department of Respiratory Medicine; the Third XiangYa Hospital of Central South University; Changsha Hunan Province China
| | - Q. Zhang
- Department of Respiratory Medicine; the Third XiangYa Hospital of Central South University; Changsha Hunan Province China
| | - S. Sun
- Department of Respiratory Medicine; the Third XiangYa Hospital of Central South University; Changsha Hunan Province China
| |
Collapse
|
37
|
Hamidzadeh K, Christensen SM, Dalby E, Chandrasekaran P, Mosser DM. Macrophages and the Recovery from Acute and Chronic Inflammation. Annu Rev Physiol 2017; 79:567-592. [PMID: 27959619 PMCID: PMC5912892 DOI: 10.1146/annurev-physiol-022516-034348] [Citation(s) in RCA: 230] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In recent years, researchers have devoted much attention to the diverse roles of macrophages and their contributions to tissue development, wound healing, and angiogenesis. What should not be lost in the discussions regarding the diverse biology of these cells is that when perturbed, macrophages are the primary contributors to potentially pathological inflammatory processes. Macrophages stand poised to rapidly produce large amounts of inflammatory cytokines in response to danger signals. The production of these cytokines can initiate a cascade of inflammatory mediator release that can lead to wholesale tissue destruction. The destructive inflammatory capability of macrophages is amplified by exposure to exogenous interferon-γ, which prolongs and heightens inflammatory responses. In simple terms, macrophages can thus be viewed as incendiary devices with hair triggers waiting to detonate. We have begun to ask questions about how these cells can be regulated to mitigate the collateral destruction associated with macrophage activation.
Collapse
Affiliation(s)
- Kajal Hamidzadeh
- Department of Cell Biology and Molecular Genetics, Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland 20742;
| | - Stephen M Christensen
- Department of Cell Biology and Molecular Genetics, Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland 20742;
| | - Elizabeth Dalby
- Department of Cell Biology and Molecular Genetics, Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland 20742;
| | - Prabha Chandrasekaran
- Department of Cell Biology and Molecular Genetics, Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland 20742;
| | - David M Mosser
- Department of Cell Biology and Molecular Genetics, Maryland Pathogen Research Institute, University of Maryland, College Park, Maryland 20742;
| |
Collapse
|
38
|
The impact of surface chemistry modification on macrophage polarisation. Immunobiology 2016; 221:1237-46. [DOI: 10.1016/j.imbio.2016.06.010] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 06/01/2016] [Accepted: 06/10/2016] [Indexed: 12/22/2022]
|
39
|
Dong W, Zhang H, Huang H, Zhou J, Hu L, Lian A, Zhu L, Ma N, Yang P, Wei K, Zhu R. Chicken IgY Fc Linked to Bordetella avium ompA and Taishan Pinus massoniana Pollen Polysaccharide Adjuvant Enhances Macrophage Function and Specific Immune Responses. Front Microbiol 2016; 7:1708. [PMID: 27847501 PMCID: PMC5088198 DOI: 10.3389/fmicb.2016.01708] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 10/12/2016] [Indexed: 12/31/2022] Open
Abstract
Fc-fusion technologies, in which immunoglobulin Fc is genetically fused to an antigenic protein, have been developed to confer antibody-like properties to proteins and peptides. Mammalian IgG Fc fusion exhibits improved antigen-induced immune responses by providing aggregates with high avidity for the IgG Fc receptor and salvaging the antigenic portion from endosomal degradation. However, whether the linked chicken IgY Fc fragment shares similar characteristics to mammalian IgG Fc remains unclear. In this study, we linked the chicken IgY Fc gene to the outer membrane protein A (ompA) of Bordetella avium through overlapping PCR. The fusion gene was cloned into the pPIC9 plasmid to construct the recombinant Pichia pastoris transformant expressing the ompA–Fc fusion protein. The effects of the linked Fc on macrophage vitality, activity, efficiency of antigen processing, and immune responses induced by the fused ompA were investigated. Furthermore, the effect of Taishan Pinus massoniana pollen polysaccharide (TPPPS), an immunomodulator, on chicken macrophage activation was evaluated. TPPPS was also used as an adjuvant to investigate its immunomodulatory effect on immunoresponses induced by the fused ompA–Fc in chickens. The pinocytosis, phagocytosis, secretion of nitric oxide and TNF-α, and MHC-II molecular expression of the macrophages treated with the fused ompA–Fc were significantly higher than those of the macrophages treated with ompA alone. The addition of TPPPS to the fused ompA–Fc further enhanced macrophage functions. The fused ompA–Fc elicited higher antigen-specific immune responses and protective efficacy compared with ompA alone. Moreover, the fused ompA–Fc conferred higher serum antibody titers, serum IL-2 and IL-4 concentrations, CD4+ and CD8+ T-lymphocyte counts, lymphocyte transformation rate, and protection rate compared with ompA alone. Notably, the prepared TPPPS adjuvant ompA–Fc vaccines induced high immune responses and protection rate. The linked Fc and TPPPS adjuvant can remarkably enhance macrophage functions and specific immune responses. This study provides new perspectives to improve the immune effects of subunit vaccines for prevention of poultry diseases.
Collapse
Affiliation(s)
- Wenwen Dong
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - Hao Zhang
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - He Huang
- Shandong New Hope Liuhe Co., Ltd, New Hope Group Qingdao, China
| | - Jianbo Zhou
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - Liping Hu
- Animal Disease Prevention and Control Center of Shandong Province, Animal Husbandry and Veterinary Bureau of Shandong Province Jinan, China
| | - Ailing Lian
- Animal Disease Prevention and Control Center of Shandong Province, Animal Husbandry and Veterinary Bureau of Shandong Province Jinan, China
| | - Lijun Zhu
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - Ningning Ma
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - Pingping Yang
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - Kai Wei
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| | - Ruiliang Zhu
- Laboratory of Animal Biological Products, College of Animal Science and Technology, Shandong Agricultural University Taian, China
| |
Collapse
|
40
|
Nlrp12 mutation causes C57BL/6J strain-specific defect in neutrophil recruitment. Nat Commun 2016; 7:13180. [PMID: 27779193 PMCID: PMC5093323 DOI: 10.1038/ncomms13180] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 09/07/2016] [Indexed: 01/08/2023] Open
Abstract
The inbred mouse strain C57BL/6J is widely used in models of immunological and infectious diseases. Here we show that C57BL/6J mice have a defect in neutrophil recruitment to a range of inflammatory stimuli compared with the related C57BL/6N substrain. This immune perturbation is associated with a missense mutation in Nlrp12 in C57BL/6J mice. Both C57BL/6J and NLRP12-deficient mice have increased susceptibility to bacterial infection that correlates with defective neutrophil migration. C57BL/6J and NLRP12-deficient macrophages have impaired CXCL1 production and the neutrophil defect observed in C57BL/6J and NLRP12-deficient mice is rescued by restoration of macrophage NLRP12. These results demonstrate that C57BL/6J mice have a functional defect in NLRP12 and that macrophages require NLRP12 expression for effective recruitment of neutrophils to inflammatory sites.
The role of NLRP12 in immunity to bacterial infection is controversial as varied and contrasting results have been published using C57BL/6 mice. Here the authors shed light on this issue, showing that unlike C57BL/6N mice, C57BL/6J mice have a missense point mutation in NLRP12 that is associated with defective neutrophil recruitment.
Collapse
|
41
|
Chuluundorj D, Harding SA, Abernethy D, La Flamme AC. Glatiramer acetate treatment normalized the monocyte activation profile in MS patients to that of healthy controls. Immunol Cell Biol 2016; 95:297-305. [PMID: 27694998 DOI: 10.1038/icb.2016.99] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/27/2016] [Accepted: 09/27/2016] [Indexed: 01/16/2023]
Abstract
Multiple sclerosis (MS) is an immune-mediated disease of the central nervous system, and monocytes contribute to MS-associated neuroinflammation. While classically activated monocytes promote inflammation, type II-activated monocytes improve the course of MS. This study investigated type II activation of monocytes and their two main subsets, namely CD14+ (CD14++CD16- subset) and CD16+ monocytes (CD14+CD16+ subset), by glatiramer acetate (GA) or intravenous immunoglobulin-associated immune complexes (IC), both of which are known MS treatments. Total monocytes and subsets were isolated from peripheral blood mononuclear cells (PBMC) of healthy controls, untreated MS patients (MS) and GA-treated MS patients (GA-MS). In contrast to the more activated ex vivo profile of monocytes from the MS group, monocytes from the GA-MS group resembled those from healthy controls. In vitro type II activation with GA primarily reduced CD40, CD86 and IL-12p40 whereas type II activation with IC consistently reduced CD40 but increased interleukin-10 (IL-10), suggesting that the GA and IC activation pathways are distinct. Moreover, while GA treatment reduced IL-12p40 by both CD14+ and CD16+ subsets, IC treatment only enhanced IL-10 by the CD16+ subset. Further analysis of the CD16+ subset revealed that MS patients had a greatly expanded CD14+CD16int population while both CD14+CD16int and CD14lowCD16high monocyte populations were expanded in GA-MS patients. Finally, a global analysis of the ex vivo monocyte data indicated that GA treatment distinctly altered the monocyte profile of MS patients, further supporting the idea that GA directly targets monocytes.
Collapse
Affiliation(s)
| | - Scott A Harding
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand.,Cardiology Department, Wellington Regional Hospital, Wellington, New Zealand
| | - David Abernethy
- Cardiology Department, Wellington Regional Hospital, Wellington, New Zealand
| | - Anne Camille La Flamme
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand.,Malaghan Institute of Medical Research, Wellington, New Zealand
| |
Collapse
|
42
|
Abstract
Numerous risk alleles for systemic lupus erythematosus (SLE) have now been identified. Analysis of the expression of genes with risk alleles in cells of hematopoietic origin demonstrates them to be most abundantly expressed in B cells and dendritic cells (DCs), suggesting that these cell types may be the drivers of the inflammatory changes seen in SLE. DCs are of particular interest as they act to connect the innate and the adaptive immune response. Thus, DCs can transform inflammation into autoimmunity, and autoantibodies are the hallmark of SLE. In this review, we focus on mechanisms of tolerance that maintain DCs in a non‐activated, non‐immunogenic state. We demonstrate, using examples from our own studies, how alterations in DC function stemming from either DC‐intrinsic abnormalities or DC‐extrinsic regulators of function can predispose to autoimmunity.
Collapse
Affiliation(s)
- Myoungsun Son
- The Feinstein Institute for Medical Research, Center for Autoimmune and Musculoskeletal Diseases, Manhasset, NY, USA
| | - Sun Jung Kim
- The Feinstein Institute for Medical Research, Center for Autoimmune and Musculoskeletal Diseases, Manhasset, NY, USA
| | - Betty Diamond
- The Feinstein Institute for Medical Research, Center for Autoimmune and Musculoskeletal Diseases, Manhasset, NY, USA
| |
Collapse
|
43
|
Janowski AM, Colegio OR, Hornick EE, McNiff JM, Martin MD, Badovinac VP, Norian LA, Zhang W, Cassel SL, Sutterwala FS. NLRC4 suppresses melanoma tumor progression independently of inflammasome activation. J Clin Invest 2016; 126:3917-3928. [PMID: 27617861 DOI: 10.1172/jci86953] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 08/02/2016] [Indexed: 01/05/2023] Open
Abstract
Members of the NLR family can assemble inflammasome complexes with the adaptor protein ASC and caspase-1 that result in the activation of caspase-1 and the release of IL-1β and IL-18. Although the NLRC4 inflammasome is known to have a protective role in tumorigenesis, there is an increased appreciation for the inflammasome-independent actions of NLRC4. Here, we utilized a syngeneic subcutaneous murine model of B16F10 melanoma to explore the role of NLRC4 in tumor suppression. We found that NLRC4-deficient mice exhibited enhanced tumor growth that was independent of the inflammasome components ASC and caspase-1. Nlrc4 expression was critical for cytokine and chemokine production in tumor-associated macrophages and was necessary for the generation of protective IFN-γ-producing CD4+ and CD8+ T cells. Tumor progression was diminished when WT or caspase-1-deficient, but not NLRC4-deficient, macrophages were coinjected with B16F10 tumor cells in NLRC4-deficient mice. Finally, examination of human primary melanomas revealed the extensive presence of NLRC4+ tumor-associated macrophages. In contrast, there was a paucity of NLRC4+ tumor-associated macrophages observed in human metastatic melanoma, supporting the concept that NLRC4 expression controls tumor growth. These results reveal a critical role for NLRC4 in suppressing tumor growth in an inflammasome-independent manner.
Collapse
|
44
|
Anderson CF, Gerber JS, Mosser DM. Modulating macrophage function with IgG immune complexes. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519020080060501] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Macrophages respond to bacterial products by releasing a large array of inflammatory mediators. We demonstrate that, in the presence of IgG immune complexes, macrophages produce high levels of IL-10 and virtually no IL-12, when they are exposed to bacterial products. The production of IL-10 by these cells can dampen innate inflammatory responses to microbial products, such as LPS. This alteration in macrophage cytokine production can also influence an adaptive immune response, preferentially inducing Th2-type immunity. Thus, immune complexes change the physiology of activated macrophages, converting them to anti-inflammatory cells that induce Th2-like immune responses. We have termed these cells type II activated macrophages.
Collapse
Affiliation(s)
- Charles F. Anderson
- Cell Biology and Molecular Genetics, University of Maryland, College Park, Maryland, USA
| | - Jeffrey S. Gerber
- Cell Biology and Molecular Genetics, University of Maryland, College Park, Maryland, USA
| | - David M. Mosser
- Cell Biology and Molecular Genetics, University of Maryland, College Park, Maryland, USA,
| |
Collapse
|
45
|
Stamatiades EG, Tremblay ME, Bohm M, Crozet L, Bisht K, Kao D, Coelho C, Fan X, Yewdell WT, Davidson A, Heeger PS, Diebold S, Nimmerjahn F, Geissmann F. Immune Monitoring of Trans-endothelial Transport by Kidney-Resident Macrophages. Cell 2016; 166:991-1003. [PMID: 27477514 DOI: 10.1016/j.cell.2016.06.058] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/09/2016] [Accepted: 06/29/2016] [Indexed: 11/28/2022]
Abstract
Small immune complexes cause type III hypersensitivity reactions that frequently result in tissue injury. The responsible mechanisms, however, remain unclear and differ depending on target organs. Here, we identify a kidney-specific anatomical and functional unit, formed by resident macrophages and peritubular capillary endothelial cells, which monitors the transport of proteins and particles ranging from 20 to 700 kDa or 10 to 200 nm into the kidney interstitium. Kidney-resident macrophages detect and scavenge circulating immune complexes "pumped" into the interstitium via trans-endothelial transport and trigger a FcγRIV-dependent inflammatory response and the recruitment of monocytes and neutrophils. In addition, FcγRIV and TLR pathways synergistically "super-activate" kidney macrophages when immune complexes contain a nucleic acid. These data identify a physiological function of tissue-resident kidney macrophages and a basic mechanism by which they initiate the inflammatory response to small immune complexes in the kidney.
Collapse
Affiliation(s)
- Efstathios G Stamatiades
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA
| | - Marie-Eve Tremblay
- Département de Médecine Moléculaire, Université Laval, Laval, QC G1V 0A6, Canada; Axe Neurosciences, Centre de Recherche du CHU de Québec, Québec, QC G1V 4G2, Canada
| | - Mathieu Bohm
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA; Division of Immunology, Infection and Center for Molecular and Cellular Biology of Inflammation, Inflammatory Diseases King's College London, London SE1 1UL, UK
| | - Lucile Crozet
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA; Weill Cornell Graduate School of Medical Sciences, 1300 York Avenue, New York, NY 10065, USA
| | - Kanchan Bisht
- Département de Médecine Moléculaire, Université Laval, Laval, QC G1V 0A6, Canada; Axe Neurosciences, Centre de Recherche du CHU de Québec, Québec, QC G1V 4G2, Canada
| | - Daniela Kao
- Department of Biology, University of Erlangen-Nuremberg, Erwin-Rommel-Strasse 3, 91058 Erlangen, Germany
| | - Carolina Coelho
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA
| | - Xiying Fan
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA; Howard Hughes Medical Institute, Memorial Sloan-Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA
| | - William T Yewdell
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA
| | - Anne Davidson
- The Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
| | - Peter S Heeger
- Department of Medicine, Recanati Miller Transplant Institute and Immunology Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Sandra Diebold
- Immunotoxicology Team Division, National Institute for Biological Standards and Control, Potters Bar EN6 3QG, UK
| | - Falk Nimmerjahn
- Department of Biology, University of Erlangen-Nuremberg, Erwin-Rommel-Strasse 3, 91058 Erlangen, Germany
| | - Frederic Geissmann
- Immunology Program and Ludwig Center, Memorial Sloan Kettering Cancer Center, 417 East 68th Street, New York, NY 10065, USA; Division of Immunology, Infection and Center for Molecular and Cellular Biology of Inflammation, Inflammatory Diseases King's College London, London SE1 1UL, UK; Weill Cornell Graduate School of Medical Sciences, 1300 York Avenue, New York, NY 10065, USA.
| |
Collapse
|
46
|
Xu G, Feng L, Song P, Xu F, Li A, Wang Y, Shen Y, Wu X, Luo Q, Wu X, Sun Y, Wu X, Xu Q. Isomeranzin suppresses inflammation by inhibiting M1 macrophage polarization through the NF-κB and ERK pathway. Int Immunopharmacol 2016; 38:175-85. [PMID: 27285671 DOI: 10.1016/j.intimp.2016.05.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/24/2016] [Accepted: 05/30/2016] [Indexed: 12/30/2022]
Abstract
Macrophage polarization plays an important role in inflammation. Regulation of the polarization has been reported to be effective therapeutics for various kinds of inflammatory diseases. The aims of the present study were to investigate the anti-inflammatory property of isomeranzin isolating from Murraya exotica as well as potential molecular mechanisms. Results showed that isomeranzin specifically reduced the M1 macrophage-associated pro-inflammatory cytokines through down-regulation of NF-κB and ERK signals. Immunoprecipitation and RNA silencing indicated suppression of isomeranzin in NF-κB activation was relying on the decreasing of TRAF6 ubiquitination. In vivo studies showed isomeranzin evidently inhibited LPS-induced sepsis for rising survival rate, improving tissue damage and lessening inflammatory cytokines. In accordance with in vitro studies, isomeranzin significantly blocked expression of p-p65 and p-ERK in lung and liver tissues. Moreover, isomeranzin ameliorated DSS and TNBS-induced colitis due to its anti-inflammatory effects. Taken together, isomeranzin suppressed inflammatory diseases by controlling M1 macrophage polarization through the NF-κB and ERK pathway.
Collapse
Affiliation(s)
- Ge Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Lili Feng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Pingping Song
- The Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Fang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Ang Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Yubin Wang
- School of Pharmaceutical Sciences, Nanjing Tech University, No 5. Xinmofan Road, Nanjing 210009, China
| | - Yan Shen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Xuefeng Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Qiong Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Xingxin Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Yang Sun
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China
| | - Xudong Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China.
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xian Lin Road, Nanjing 210093, China.
| |
Collapse
|
47
|
Inhibition of Extracellular Calcium Influx Results in Enhanced IL-12 Production in LPS-Treated Murine Macrophages by Downregulation of the CaMKKβ-AMPK-SIRT1 Signaling Pathway. Mediators Inflamm 2016; 2016:6152713. [PMID: 27313401 PMCID: PMC4904125 DOI: 10.1155/2016/6152713] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/19/2016] [Accepted: 04/27/2016] [Indexed: 12/18/2022] Open
Abstract
Activated macrophages are the primary sources of IL-12, a key cytokine bridging innate and adaptive immunity. However, macrophages produce low amounts of IL-12 upon stimulation and the underlying regulatory mechanism remains unclear. In this study, we found a new calcium-dependent mechanism that controlled IL-12 production in LPS-treated murine macrophages. First, LPS was demonstrated to induce extracellular calcium entry in murine peritoneal macrophages and inhibition of calcium influx resulted in marked enhancement in IL-12 production. Then, withdrawal of extracellular calcium was found to suppress CaMKKβ and AMPK activation triggered by LPS while chemical inhibition or genetic knockdown of these two kinases augmented LPS induced IL-12 production. AMPK activation increased the NAD+/NADH ratio and activated Sirtuin 1 (SIRT1), a NAD+-dependent deacetylating enzyme and negative regulator of inflammation. Chemical inhibitor or siRNA of SIRT1 enhanced IL-12 release while its agonist suppressed IL-12 production. Finally, it was found that SIRT1 selectively affected the transcriptional activity of NF-κB which thereby inhibited IL-12 production. Overall, our study demonstrates a new role of transmembrane calcium mobilization in immunity modulation such that inhibition of calcium influx leads to impaired activation of CaMKKβ-AMPK-SIRT1 signaling pathway which lifts restriction on NF-κB activation and results in enhanced IL-12 production.
Collapse
|
48
|
Ochando J, Kwan WH, Ginhoux F, Hutchinson JA, Hashimoto D, Collin M. The Mononuclear Phagocyte System in Organ Transplantation. Am J Transplant 2016; 16:1053-69. [PMID: 26602545 DOI: 10.1111/ajt.13627] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/04/2015] [Accepted: 11/08/2015] [Indexed: 01/25/2023]
Abstract
The mononuclear phagocyte system (MPS) comprises monocytes, macrophages and dendritic cells (DCs). Over the past few decades, classification of the cells of the MPS has generated considerable controversy. Recent studies into the origin, developmental requirements and function of MPS cells are beginning to solve this problem in an objective manner. Using high-resolution genetic analyses and fate-mapping studies, three main mononuclear phagocyte lineages have been defined, namely, macrophage populations established during embryogenesis, monocyte-derived cells that develop during adult life and DCs. These subsets and their diverse subsets have specialized functions that are largely conserved between species, justifying the introduction of a new, universal scheme of nomenclature and providing the framework for therapeutic manipulation of immune responses in the clinic. In this review, we have commented on the implications of this novel MPS classification in solid organ transplantation.
Collapse
Affiliation(s)
- J Ochando
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY
| | - W-H Kwan
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - F Ginhoux
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Singapore, Singapore
| | - J A Hutchinson
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany
| | - D Hashimoto
- Department of Hematology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - M Collin
- Institute of Cellular Medicine, Newcastle University, Newcastle, UK
| |
Collapse
|
49
|
Aribam SD, Harada T, Elsheimer-Matulova M, Iwata T, Kanehira K, Hikono H, Matsui H, Ogawa Y, Shimoji Y, Eguchi M. Specific Monoclonal Antibody Overcomes the Salmonella enterica Serovar Typhimurium's Adaptive Mechanisms of Intramacrophage Survival and Replication. PLoS One 2016; 11:e0151352. [PMID: 26986057 PMCID: PMC4795626 DOI: 10.1371/journal.pone.0151352] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 02/26/2016] [Indexed: 12/31/2022] Open
Abstract
Salmonella-specific antibodies play an important role in host immunity; however, the mechanisms of Salmonella clearance by pathogen-specific antibodies remain to be completely elucidated since previous studies on antibody-mediated protection have yielded inconsistent results. These inconsistencies are at least partially attributable to the use of polyclonal antibodies against Salmonella antigens. Here, we developed a new monoclonal antibody (mAb)-449 and identified its related immunogen that protected BALB/c mice from infection with Salmonella enterica serovar Typhimurium. In addition, these data indicate that the mAb-449 immunogen is likely a major protective antigen. Using in vitro infection studies, we also analyzed the mechanism by which mAb-449 conferred host protection. Notably, macrophages infected with mAb-449-treated S. Typhimurium showed enhanced pathogen uptake compared to counterparts infected with control IgG-treated bacteria. Moreover, these macrophages produced elevated levels of pro-inflammatory cytokine TNFα and nitric oxide, indicating that mAb-449 enhanced macrophage activation. Finally, the number of intracellular bacteria in mAb-449-activated macrophages decreased considerably, while the opposite was found in IgG-treated controls. Based on these findings, we suggest that, although S. Typhimurium has the potential to survive and replicate within macrophages, host production of a specific antibody can effectively mediate macrophage activation for clearance of intracellular bacteria.
Collapse
Affiliation(s)
- Swarmistha Devi Aribam
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | - Tomoyuki Harada
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | | | - Taketoshi Iwata
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | - Katsushi Kanehira
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | - Hirokazu Hikono
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | - Hidenori Matsui
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108–8641, Japan
| | - Yohsuke Ogawa
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | - Yoshihiro Shimoji
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
| | - Masahiro Eguchi
- National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305–0856, Japan
- * E-mail:
| |
Collapse
|
50
|
Ciraci C, Janczy JR, Jain N, Haasken S, Pecli e Silva C, Benjamim CF, Sadler JJ, Olivier AK, Iwakura Y, Shayakhmetov DM, Sutterwala FS, Cassel SL. Immune Complexes Indirectly Suppress the Generation of Th17 Responses In Vivo. PLoS One 2016; 11:e0151252. [PMID: 26978520 PMCID: PMC4792482 DOI: 10.1371/journal.pone.0151252] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 02/25/2016] [Indexed: 01/01/2023] Open
Abstract
The precise context in which the innate immune system is activated plays a pivotal role in the subsequent instruction of CD4+ T helper (Th) cell responses. Th1 responses are downregulated when antigen is encountered in the presence of antigen-IgG immune complexes. To assess if Th17 responses to antigen are subject to similar influences in the presence of immune complexes we utilized an inflammatory airway disease model in which immunization of mice with Complete Freund’s Adjuvant (CFA) and ovalbumin (Ova) induces a powerful Ova-specific Th1 and Th17 response. Here we show that modification of that immunization with CFA to include IgG-Ova immune complexes results in the suppression of CFA-induced Th17 responses and a concurrent enhancement of Ova-specific Th2 responses. Furthermore, we show the mechanism by which these immune complexes suppress Th17 responses is through the enhancement of IL-10 production. In addition, the generation of Th17 responses following immunization with CFA and Ova were dependent on IL-1α but independent of NLRP3 inflammasome activation. Together these data represent a novel mechanism by which the generation of Th17 responses is regulated.
Collapse
Affiliation(s)
- Ceren Ciraci
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Department of Molecular Biology and Genetics, Istanbul Technical University, Istanbul, Turkey
| | - John R. Janczy
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Nidhi Jain
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Stefanie Haasken
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Cyntia Pecli e Silva
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudia F. Benjamim
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jeffrey J. Sadler
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Alicia K. Olivier
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, Yamasaki 2669, Noda, Chiba, 278–0022, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Saitama, 332–0012, Japan
| | - Dmitry M. Shayakhmetov
- Lowance Center for Human Immunology, Department of Medicine, Emory University, Atlanta, Georgia, United States of America
| | - Fayyaz S. Sutterwala
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Veterans Affairs Medical Center, Iowa City, Iowa, United States of America
| | - Suzanne L. Cassel
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- * E-mail:
| |
Collapse
|