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Silva BJDA, Krogstad PA, Teles RMB, Andrade PR, Rajfer J, Ferrini MG, Yang OO, Bloom BR, Modlin RL. IFN-γ-mediated control of SARS-CoV-2 infection through nitric oxide. Front Immunol 2023; 14:1284148. [PMID: 38162653 PMCID: PMC10755032 DOI: 10.3389/fimmu.2023.1284148] [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: 08/28/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction The COVID-19 pandemic has highlighted the need to identify mechanisms of antiviral host defense against SARS-CoV-2. One such mediator is interferon-g (IFN-γ), which, when administered to infected patients, is reported to result in viral clearance and resolution of pulmonary symptoms. IFN-γ treatment of a human lung epithelial cell line triggered an antiviral activity against SARS-CoV-2, yet the mechanism for this antiviral response was not identified. Methods Given that IFN-γ has been shown to trigger antiviral activity via the generation of nitric oxide (NO), we investigated whether IFN-γ induction of antiviral activity against SARS-CoV-2 infection is dependent upon the generation of NO in human pulmonary epithelial cells. We treated the simian epithelial cell line Vero E6 and human pulmonary epithelial cell lines, including A549-ACE2, and Calu-3, with IFN-γ and observed the resulting induction of NO and its effects on SARS-CoV-2 replication. Pharmacological inhibition of inducible nitric oxide synthase (iNOS) was employed to assess the dependency on NO production. Additionally, the study examined the effect of interleukin-1b (IL-1β) on the IFN-g-induced NO production and its antiviral efficacy. Results Treatment of Vero E6 cells with IFN-γ resulted in a dose-responsive induction of NO and an inhibitory effect on SARS-CoV-2 replication. This antiviral activity was blocked by pharmacologic inhibition of iNOS. IFN-γ also triggered a NO-mediated antiviral activity in SARS-CoV-2 infected human lung epithelial cell lines A549-ACE2 and Calu-3. IL-1β enhanced IFN-γ induction of NO, but it had little effect on antiviral activity. Discussion Given that IFN-g has been shown to be produced by CD8+ T cells in the early response to SARS-CoV-2, our findings in human lung epithelial cell lines, of an IFN-γ-triggered, NO-dependent, links the adaptive immune response to an innate antiviral pathway in host defense against SARS-CoV-2. These results underscore the importance of IFN-γ and NO in the antiviral response and provide insights into potential therapeutic strategies for COVID-19.
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Affiliation(s)
- Bruno J. de Andrade Silva
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
| | - Paul A. Krogstad
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, CA, United States
| | - Rosane M. B. Teles
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
| | - Priscila R. Andrade
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
| | - Jacob Rajfer
- Department of Urology, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Monica G. Ferrini
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Health and Life Sciences, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
| | - Otto O. Yang
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Barry R. Bloom
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Robert L. Modlin
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
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Ma Q, Yu J, Liu L, Ma X, Zhang J, Zhang J, Wang X, Deng G, Wu X. TRAF6 triggers Mycobacterium-infected host autophagy through Rab7 ubiquitination. Cell Death Discov 2023; 9:427. [PMID: 38016969 PMCID: PMC10684575 DOI: 10.1038/s41420-023-01731-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/06/2023] [Accepted: 11/16/2023] [Indexed: 11/30/2023] Open
Abstract
Tumor necrosis factor receptor-associated factor 6 (TRAF6) is an E3 ubiquitin ligase that is extensively involved in the autophagy process by interacting with diverse autophagy initiation and autophagosome maturation molecules. However, whether TRAF6 interacts with lysosomal proteins to regulate Mycobacterium-induced autophagy has not been completely characterized. Herein, the present study showed that TRAF6 interacted with lysosomal key proteins Rab7 through RING domain which caused Rab7 ubiquitination and subsequently ubiquitinated Rab7 binds to STX17 (syntaxin 17, a SNARE protein that is essential for mature autophagosome), and thus promoted the fusion of autophagosomes and lysosomes. Furthermore, TRAF6 enhanced the initiation and formation of autophagosomes in Mycobacterium-induced autophagy in both BMDMs and RAW264.7 cells, as evidenced by autophagic flux, colocalization of LC3 and BCG, autophagy rates, and autophagy-associated protein expression. Noteworthy to mention, TRAF6 deficiency exacerbated lung injury and promoted BCG survival. Taken together, these results identify novel molecular and cellular mechanisms by which TRAF6 positively regulates Mycobacterium-induced autophagy.
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Affiliation(s)
- Qinmei Ma
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China
| | - Jialin Yu
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China
| | - Li Liu
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China
| | - Xiaoyan Ma
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China
| | - Jiaxue Zhang
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China
| | - Jiamei Zhang
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China
| | - Xiaoping Wang
- The Fourth People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, NingXia, 750021, China
| | - Guangcun Deng
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China.
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China.
| | - Xiaoling Wu
- School of Life Science, Ningxia University, Yinchuan, NingXia, 750021, China.
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan, NingXia, 750021, China.
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Chen CS, Zhang YG, Wang HJ, Fan HN. Effect and mechanism of reactive oxygen species-mediated NOD-like receptor family pyrin domain-containing 3 inflammasome activation in hepatic alveolar echinococcosis. World J Gastroenterol 2023; 29:2153-2171. [PMID: 37122606 PMCID: PMC10130966 DOI: 10.3748/wjg.v29.i14.2153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/01/2023] [Accepted: 03/16/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND The NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is a significant component of the innate immune system that plays a vital role in the development of various parasitic diseases. However, its role in hepatic alveolar echinococcosis (HAE) remains unclear.
AIM To investigate the NLRP3 inflammasome and its mechanism of activation in HAE.
METHODS We assessed the expression of NLRP3, caspase-1, interleukin (IL)-1β, and IL-18 in the marginal zone and corresponding normal liver of 60 patients with HAE. A rat model of HAE was employed to investigate the role of the NLRP3 inflammasome in the marginal zone of HAE. Transwell experiments were conducted to investigate the effect of Echinococcus multilocularis (E. multilocularis) in stimulating Kupffer cells and hepatocytes. Furthermore, immunohistochemistry, Western blotting, and enzyme-linked immunosorbent assay were used to evaluate NLRP3, caspase-1, IL-1β, and IL-18 expression; flow cytometry was used to detect apoptosis and reactive oxygen species (ROS).
RESULTS NLRP3 inflammasome activation was significantly associated with ROS. Inhibition of ROS production decreased NLRP3-caspase-1-IL-1β pathway activation and mitigated hepatocyte damage and inflammation.
CONCLUSION E. multilocularis induces hepatocyte damage and inflammation by activating the ROS-mediated NLRP3-caspase-1-IL-1β pathway in Kupffer cells, indicating that ROS may serve as a potential target for the treatment of HAE.
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Affiliation(s)
- Cai-Song Chen
- Research Center for High Altitude Medicine of Qinghai University, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
| | - Yao-Gang Zhang
- Qinghai Province Research Key Laboratory for Echinococcosis, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
| | - Hai-Jiu Wang
- Qinghai Province Research Key Laboratory for Echinococcosis, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
| | - Hai-Ning Fan
- Department of Hepatobiliary and Pancreatic Surgery, Qinghai Province Research Key Laboratory for Echinococcosis, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
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Li L, Liu Z, Fang B, Xu J, Dong X, Yang L, Zhang Z, Guo S, Ding B. Effects of Vitamin A and K3 on Immune Function and Intestinal Antioxidant Capacity of Aged Laying Hens. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2022. [DOI: 10.1590/1806-9061-2021-1572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- L Li
- Wuhan Polytechnic University, China
| | - Z Liu
- Wuhan Polytechnic University, China
| | - B Fang
- Wuhan Polytechnic University, China
| | - J Xu
- Wuhan Polytechnic University, China
| | - X Dong
- Zhejiang University, China
| | - L Yang
- HuBei Horwath Biotechnology Co., Ltd, China
| | - Z Zhang
- Wuhan Polytechnic University, China
| | - S Guo
- Wuhan Polytechnic University, China
| | - B Ding
- Wuhan Polytechnic University, China
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Wu W, Liang D. Expression and related mechanisms of miR-330-3p and S100B in an animal model of cartilage injury. J Int Med Res 2021; 49:3000605211039471. [PMID: 34590918 PMCID: PMC8489778 DOI: 10.1177/03000605211039471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective To investigate the roles of and relationship between microRNA (miR)-330-3p and S100 calcium-binding protein B (S100B) in an animal model of cartilage injury. Methods This study included 30 New Zealand male rabbits randomly divided into three groups: an intervention group, a model group and a sham surgery control group. Modelling was performed in the intervention and model groups, but in the sham surgery group, only the skin was cut. After modelling, the intervention and model groups were injected with the miR-330-3p overexpression vector GV268-miR-330-3p or the control GV268-N-ODN vector, respectively, twice a week for 7 weeks. Results Levels of interleukin-1β and tumour necrosis factor-α in the synovial fluid were significantly higher in the model group than in the intervention and control groups. The level of miR-330-3p in the cartilage tissue was significantly higher in the control group than in the model group but it was significantly lower compared with the intervention group. Levels of S100B, fibroblast growth factor receptor 1 and fibroblast growth factor-2 in the cartilage tissue of rabbits in the model group were significantly higher compared with the control and intervention groups. Conclusion These findings demonstrate that the upregulation of miR-330-3p can inhibit the expression of S100B.
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Affiliation(s)
- Wenming Wu
- Department of Orthopaedics, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Dongming Liang
- Lirimax (Tianjin) Medical Technical Co., Ltd, Tianjin, China
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Guerra JM, Fernandes NCCA, Réssio RA, Kimura LM, Barbosa JER, Taniguchi HH, Hiramoto RM, Motoie G, Tolezano JE, Cogliati B. Cytokine profile and parasite load in lymph nodes of dogs naturally infected with Leishmania infantum from distinct epidemiological scenarios in São Paulo State, Brazil. Vet Immunol Immunopathol 2021; 233:110198. [PMID: 33548792 DOI: 10.1016/j.vetimm.2021.110198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 01/14/2021] [Accepted: 01/23/2021] [Indexed: 10/22/2022]
Abstract
Visceral leishmaniasis (VL) is an important zoonotic vector-borne disease and domestic dogs are considered the main domiciliary and peri-domiciliary reservoir of Leishmania (Leishmania) infantum in South America. Distinct eco-epidemiological scenarios associated to the prevalence of the disease, clusters of parasite genotypes and chemotypes of vectors population are described in Brazil, especially in the state of São Paulo (SP). In this context, the purpose of the present study is to evaluate the clinical signs, histopathological lesions, parasite load and cytokine profile by immunohistochemistry (IHC) in popliteal lymph nodes of canines naturally infected with L. infantum, from different municipalities of the state of SP. Eighty-three dogs with VL, 61 from northwest SP (NWSP) and 22 from southeast SP (SESP), were clinically classified in stage II, with no babesiosis and ehrlichiosis. Subcapsular inflammatory infiltration and histiocytosis were significantly higher in the SESP group (p = 0.0128; 0.0077, respectively). On the other hand, dogs from NWSP revealed 4.6-fold significantly higher parasite burden (p = 0.0004) and higher IHC scores of IL-1β (p = 0.0275) and IL-4 (p = 0.0327) in the popliteal lymph node tissues, which may be associated with the susceptibility and progression of the disease in these dogs. Differences in immune response profile associated with higher parasite load in dogs can also contribute to explain the distinct eco-epidemiological patterns of VL in specific geographic regions.
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Affiliation(s)
- Juliana M Guerra
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil; Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, SP, 05508-270, Brazil.
| | - Natália C C A Fernandes
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil; Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, SP, 05508-270, Brazil
| | - Rodrigo A Réssio
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - Lidia M Kimura
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - José E R Barbosa
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - Helena H Taniguchi
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - Roberto M Hiramoto
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - Gabriela Motoie
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - José E Tolezano
- Instituto Adolfo Lutz, Coordenadoria de Controle de Doenças, Secretaria do Estado daSaúde de São Paulo, Avenida Dr. Arnaldo, 351, 01246-000, São Paulo, SP, Brazil
| | - Bruno Cogliati
- Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, SP, 05508-270, Brazil
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Osero BO, Aruleba RT, Brombacher F, Hurdayal R. Unravelling the unsolved paradoxes of cytokine families in host resistance and susceptibility to Leishmania infection. Cytokine X 2020; 2:100043. [PMID: 33415318 PMCID: PMC7773805 DOI: 10.1016/j.cytox.2020.100043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/16/2020] [Accepted: 09/19/2020] [Indexed: 12/29/2022] Open
Abstract
Leishmaniasis is a neglected disease caused by protozoan parasites of the genus Leishmania. Successful clearance of Leishmania relies on a robust human immune response and various cytokines have been implicated in resistance and susceptibility to Leishmania infection. Accordingly, various immunotherapeutic approaches involving cytokines and cytokine receptors are being considered as novel avenues of treatment given the limited efficacy of current anti-leishmanial drugs. These approaches target canonical T helper (Th)1/Type 1 cytokines as intended mediators of host-protection to infection whilst concomitantly suppressing Th2/Type 2 cytokines and their anticipated disease-promoting roles. However, the use of cytokine and cytokine receptor gene-deficient mice over the years has challenged this simplistic view of Th1/Type 1-mediated resistance and Th2/Type 2-mediated susceptibility. Indeed, contribution to susceptibility vs resistance is only a partial consequence to cytokine action as the overall response is multi-faceted due to the pleiotropic, redundant, antagonistic and synergistic action of cytokines and interactions with immune cells in the diseased state. Notably, while the responses of certain cytokines are selectively host-protective or characteristic disease-enhancers, some ligands exert a response depending on the parasite-species initiating infection. Paradoxically, others play dual or contradictory roles in different Leishmania immunopathologies. Hence, cytokines in disease is an unsolved paradox and a comprehensive knowledge of cytokine interplay is important to guide the development of novel immunotherapeutics against leishmaniasis. In this review, we characterize various cytokine families in persistence and clearance of the Leishmania parasite and particularly elucidate unsolved cytokine puzzles in leishmaniasis based on information acquired from "gain of knowledge by loss of function" studies in cytokine and cytokine receptor gene-deficient mice.
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Affiliation(s)
- Bernard Ong'ondo Osero
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine (IDM), South African Medical Research Council (SAMRC) on Immunology of Infectious Diseases, University of Cape Town, Observatory 7925, Cape Town, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Observatory 7925, Cape Town, South Africa
- Faculty of Health Sciences, Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Observatory 7925, Cape Town, South Africa
| | - Raphael Taiwo Aruleba
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, Cape Town, South Africa
| | - Frank Brombacher
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine (IDM), South African Medical Research Council (SAMRC) on Immunology of Infectious Diseases, University of Cape Town, Observatory 7925, Cape Town, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Observatory 7925, Cape Town, South Africa
- Faculty of Health Sciences, Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Observatory 7925, Cape Town, South Africa
| | - Ramona Hurdayal
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine (IDM), South African Medical Research Council (SAMRC) on Immunology of Infectious Diseases, University of Cape Town, Observatory 7925, Cape Town, South Africa
- International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Observatory 7925, Cape Town, South Africa
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, Cape Town, South Africa
- Faculty of Health Sciences, Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Observatory 7925, Cape Town, South Africa
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Chanyalew M, Abebe M, Endale B, Girma S, Tasew G, van Zandbergen G, Ritter U, Gadisa E, Aseffa A, Laskay T. Enhanced production of pro-inflammatory cytokines and chemokines in Ethiopian cutaneous leishmaniasis upon exposure to Leishmania aethiopica. Cytokine 2020; 145:155289. [PMID: 32951968 DOI: 10.1016/j.cyto.2020.155289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/02/2020] [Accepted: 09/06/2020] [Indexed: 11/18/2022]
Abstract
The clinical course and outcome of cutaneous leishmaniasis (CL) vary due to the infecting Leishmania species and host genetic makeup that result in different immune responses against the parasites. The host immune response to Leishmania aethiopica (L.aethiopica), the causative agent of CL in Ethiopia, is poorly understood. To contribute to the understanding of the protective immune response in CL due to L.aethiopica, we characterized the cytokine response to L. aethiopica in patients with the localized form of CL (LCL) and age-and sex-matched apparently healthy controls. By applying a whole blood based in vitro culture we found enhanced release of TNF, IL-6, MCP-1 or CCL2, IP-10 or CXCL10, MIP-1β or CCL4 and IL-8 or CXCL8- but not of IL-10CL patients in response to L. aethiopica compared to the controls. No difference was observed between LCL cases and controls in the secretion of these cytokines and chemokines in whole blood cultures treated with the TLR-ligands LPS, MALP-2 or polyI: C. The observed increased secretion of the pro-inflammatory cytokines/chemokines reflects an enhanced response against the parasites by LCL patients as compared to healthy controls rather than a generally enhanced ability of blood leukocytes from LCL patients to respond to microbial constituents. Our findings suggest that the enhanced production of pro-inflammatory cytokines/chemokines is associated with localized cutaneous leishmaniasis caused by L.aethiopica.
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Affiliation(s)
- Menberework Chanyalew
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia.
| | - Markos Abebe
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia
| | - Birtukan Endale
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia
| | - Selfu Girma
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia
| | - Geremew Tasew
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia; Leishmaniasis Research Laboratory, Ethiopia Public Health Institute, P.O. Box 1242, Addis Ababa, Ethiopia
| | - Ger van Zandbergen
- Division of Immunology, Paul-Ehrlich-Institute, Federal Institute for Vaccines and Biomedicines, Langen D-63225, Germany.
| | - Uwe Ritter
- Regensburg Center for Interventional Immunology (RCI), Institute of Immunology, University Medical Center Regensburg, University of Regensburg, D-93053 Regensburg, Germany.
| | - Endalamaw Gadisa
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia
| | - Abraham Aseffa
- Research and Innovation Division, Armauer Hansen Research Institute, P.O. Box 1005, Addis Ababa, Ethiopia
| | - Tamás Laskay
- Department of Infectious Diseases and Microbiology, University of Lübeck, D-23560 Lübeck, Germany.
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The different faces of the NLRP3 inflammasome in cutaneous Leishmaniasis: A review. Cytokine 2020; 147:155248. [PMID: 32807586 DOI: 10.1016/j.cyto.2020.155248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/03/2020] [Accepted: 08/08/2020] [Indexed: 12/13/2022]
Abstract
Cutaneous leishmaniasis (CL) is a vector-borne parasitic disease caused by Protozoa of the genus Leishmania. Clinical manifestations of this disease are the result of a complex interplay of diverse factors, including the genetic background and the immune status of the host. Understanding the impact of these factors on the CL pathology may provide new targets to manage the infection and improve clinical outcome. The NLRP3 inflammasome, an innate immune complex of several cell types, seems to be involved in the CL physiopathology. Current studies of its role show contradictory effects of this complex on the evolution of Leishmania infection in mice and humans. In this review, we discuss the data regarding different roles of the NLRP3 inflammasome in murine and human CL.
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10
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Feng S, Cong H, Ji L. Salvianolic Acid A Exhibits Anti-Inflammatory and Antiarthritic Effects via Inhibiting NF-κB and p38/MAPK Pathways. Drug Des Devel Ther 2020; 14:1771-1778. [PMID: 32440102 PMCID: PMC7217308 DOI: 10.2147/dddt.s235857] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/12/2020] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Osteoarthritis (OA), a chronic joint disease, combines with massive inflammation and plays a vital role in cartilage degeneration. The main strategy in clinic is controlling inflammation, thereby treating osteoarthritis. Salvianolic acid A (SAA) is a type of phenolic acid, derived from a traditional chinese herbal medicine Danshen that is extensively used clinically. METHODS AND RESULTS We observed the anti-inflammatory and antiarthritic effects of SAA in IL-1β-stimulated cells. We found that SAA evidently decreased the expression of mainly inflammatory factors, exerted the remarkable effects of anti-inflammation and anti-arthritis. Furthermore, SAA inhibited the expression of Matrix metalloproteinases (MMP1, MMP13), and ADAMTS-5 and raised the synthesis of collagen II and aggrecan. Additionally, the results indicated that SAA gave rise to the effects by down-regulation of NF-κB and p38/MAPK pathways. DISCUSSION Our study demonstrates that SAA may be a promising anti-inflammatory for the treatment of OA in clinic.
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Affiliation(s)
- Shuang Feng
- The Second People’s Hospital of Nantong, Nantong, Jiangsu, People’s Republic of China
| | - Hui Cong
- The Second People’s Hospital of Nantong, Nantong, Jiangsu, People’s Republic of China
| | - Lei Ji
- The Second People’s Hospital of Nantong, Nantong, Jiangsu, People’s Republic of China
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Zamboni DS, Sacks DL. Inflammasomes and Leishmania: in good times or bad, in sickness or in health. Curr Opin Microbiol 2019; 52:70-76. [PMID: 31229882 DOI: 10.1016/j.mib.2019.05.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/13/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022]
Abstract
The inflammasomes are multi-molecular platforms that are activated in host cell cytoplasm when the innate immune cells are infected with pathogens or exposed to damage signals. Many independent groups reported that Leishmania infection trigger activation of the NLRP3 inflammasome in macrophages for restriction of intracellular parasite replication. Accordingly, Leishmania can dampen NLRP3 activation as an evasion strategy. In vivo, the NLRP3 inflammasome can promote parasite clearance, but the failure to eliminate parasites in the tissues together with sustained inflammasome activation can promote IL-1β-mediated disease pathology. In this review, we discuss the recent data regarding activation of the NLRP3 inflammasome in response to Leishmania and the beneficial and detrimental effects of the inflammasome during development of Leishmaniasis.
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Affiliation(s)
- Dario S Zamboni
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - David L Sacks
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
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