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Wohlsein JC, Meurer M, Mörgelin M, Nessler JN, Flegel T, Schenk HC, Jurina K, Rentmeister K, Fischer A, Gödde T, Baumgärtner W, von Köckritz-Blickwede M, Tipold A. Neutrophil extracellular traps in CSF and serum of dogs with steroid-responsive meningitis-arteritis. PLoS One 2024; 19:e0295268. [PMID: 38241272 PMCID: PMC10798544 DOI: 10.1371/journal.pone.0295268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 11/17/2023] [Indexed: 01/21/2024] Open
Abstract
In steroid-responsive meningitis-arteritis (SRMA), inflammatory dysregulation is driven by neutrophilic granulocytes resulting in purulent leptomeningitis. Neutrophils can generate neutrophil extracellular traps (NET). Uncontrolled NET-formation or impaired NET-clearance evidently cause tissue and organ damage resulting in immune-mediated diseases. The aim of the study was to verify that NET-formation is detectable in ex vivo samples of acute diseased dogs with SRMA by visualizing and measuring NET-markers in serum and cerebrospinal fluid (CSF) samples. CSF-samples of dogs with acute SRMA (n = 5) and in remission (n = 4) were examined using immunofluorescence (IF)-staining of DNA-histone-1-complexes, myeloperoxidase and citrullinated Histone H3 (H3Cit). Immunogold-labeling of H3Cit and neutrophil elastase followed by transmission electron microscopy (TEM) were used to determine ultrastructural NET-formation in the CSF of one exemplary dog. H3Cit-levels and DNase-activity were measured in CSF and serum samples using an H3Cit-ELISA and a DNase-activity-assay, respectively in patients with the following diseases: acute SRMA (n = 34), SRMA in remission (n = 4), bacterial encephalitis (n = 3), meningioma with neutrophilic inflammation (n = 4), healthy dogs (n = 6). NET-formation was detectable with IF-staining in n = 3/5 CSF samples of dogs with acute SRMA but were not detectable during remission. Vesicular NET-formation was detectable in one exemplary dog using TEM. DNase-activity was significantly reduced in dogs suffering from acute SRMA compared to healthy control group (p < 0.0001). There were no statistical differences of H3Cit levels in CSF or serum samples of acute diseased dogs compared to dogs under treatment, dogs suffering from meningioma or bacterial encephalitis or the healthy control group. Our findings demonstrate that NET-formation and insufficient NET-clearance possibly drive the immunologic dysregulation and complement the pathogenesis of SRMA. The detection of NETs in SRMA offers many possibilities to explore the aetiopathogenetic influence of this defence mechanism of the innate immune system in infectious and non-infectious canine neuropathies.
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Affiliation(s)
- Jan Christian Wohlsein
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Marita Meurer
- Department of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- Research Centre for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | | | - Jasmin Nicole Nessler
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Thomas Flegel
- Department for Small Animals, Faculty of Veterinary Medicine, Leipzig University, Leipzig, Germany
| | | | | | - Kai Rentmeister
- Tieraerztliche Praxis für Neurologie, Small Animal Practice, Dettelbach, Germany
| | - Andrea Fischer
- Clinic of Small Animal Medicine, Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | | | - Wolfgang Baumgärtner
- Department of Pathology, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Maren von Köckritz-Blickwede
- Department of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
- Research Centre for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Andrea Tipold
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
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2
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Jin Z, Jin Q, Chen M, Liu W, Hong H, Jiang Y, Gao X, Qian Y, Wang Z, Liu Q, Wei Z. Toxoplasma gondii-induced neutrophil extracellular traps are relevant to glycolysis, TLR2, and TLR4 MAPK signaling pathway in goats. Parasitol Res 2023; 123:34. [PMID: 38087003 DOI: 10.1007/s00436-023-08041-9] [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: 04/21/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023]
Abstract
Toxoplasma gondii (T. gondii) exhibits a significantly high prevalence of infection in goats, leading to adverse consequences such as abortion and stillbirth in ewes, thereby posing a substantial challenge to the goat farming industry. Neutrophil extracellular traps (NETs) have been shown to capture T. gondii in goats; however, the precise mechanisms underlying NET release in goats remain poorly understood. Therefore, the aim of our research was to elucidate the involved mechanism. We assessed the cytotoxicity of T. gondii on neutrophils using CCK-8 assay, visualized the structure of T. gondii-induced goat NETs through immunofluorescence, quantified ROS release during T. gondii-induced NET formation using fluorescence microplate analysis, and employed inhibitors targeting TLR 2, TLR4, NADPH oxidase, ERK1/2, and P38 MAPK signaling pathways as well as glycolysis to dissect the mechanisms underlying T. gondii-induced NET release. Within 1 h, T. gondii did not exhibit significant cytotoxicity towards neutrophils in our findings. The formation of typical NET structures induced by T. gondii involved DNA, citrullinated histone 3 (citH3), and neutrophil elastase (NE). Additionally, T. gondii significantly stimulated the release of NETs in goats. The process was accompanied by the production of reactive oxygen species (ROS) mediated through NADPH oxidase, p38, and ERK1/2 signaling pathways. Inhibition of these pathways resulted in a decrease in NET release. Moreover, inhibition of TLR 2, TLR4, and glycolysis also led to a reduction in T. gondii-induced NET release. Overall, our study demonstrates that T. gondii can induce characteristic NET structures and elucidates the involvement of various mechanisms including TLR2/TLR4 signaling pathway activation, NADPH oxidase activity modulation via ROS production regulation through p38 MAPK and ERK1/2 signaling pathways, and glycolysis regulation during the innate immune response against T. gondii infection in goats.
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Affiliation(s)
- Zha Jin
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Qinqin Jin
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Meiyi Chen
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Wei Liu
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Hongrong Hong
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Yuqian Jiang
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Xinxin Gao
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Yuxiao Qian
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Zedong Wang
- Center for Pathogen Biology and Infectious Diseases, International Center of Future Science, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital, Jilin University, Changchun, 130122, Jilin, People's Republic of China
| | - Quan Liu
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China
| | - Zhengkai Wei
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, People's Republic of China.
- College of Veterinary Medicine, Southwest University, Chongqing, 400715, People's Republic of China.
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Liu Y, Liang J, Li JW, Xing LH, Li FX, Wang N, Wu YJ, Ma YZ, Xing ZR, Jiang X, Zhang XY, Lei ZX, Wang X, Yu SX. Phagocyte extracellular traps formation contributes to host defense against Clostridium perfringens infection. Cytokine 2023; 169:156276. [PMID: 37339556 DOI: 10.1016/j.cyto.2023.156276] [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: 05/03/2022] [Revised: 06/10/2023] [Accepted: 06/12/2023] [Indexed: 06/22/2023]
Abstract
Clostridium perfringens (C. perfringens) is an important Gram-positive anaerobic spore-forming pathogen that provokes life-threatening gas gangrene and acute enterotoxaemia, although it colonizes as a component of the symbiotic bacteria in humans and animals. However, the mechanisms by which C. perfringens is cleared from the host remains poorly understood, thereby impeding the development of novel strategies for control this infection. Here, we uncover a beneficial effect of extracellular traps (ETs) formation on bacterial killing and clearance by phagocytes. C. perfringens strain ATCC13124, and wild-type isolates CP1 and CP3 markedly trigger ETs formation in macrophages and neutrophils. As expected, visualization of DNA decorated with histone, myeloperoxidase (MPO) and neutrophils elastase (NE) in C. perfringens-triggered classical ETs structures. Notably, the bacteria-induced ETs formation is an ERK1/2-, P38 MAPK-, store-operated calcium entry (SOCE)-, NADPH oxidase-, histone-, NE-, and MPO-dependent process, and is independent of LDH activity. Meanwhile, the defect of bactericidal activity is mediated by impairing ETs formation in phagocytes. Moreover, In vivo studies indicated that degradation of ETs by DNase I administration leads to a defect in the protection against experimental gas gangrene, with higher mortality rates, exacerbated tissue damage, and more bacterial colonization. Together, these results suggest that phagocyte ETs formation is essential for the host defense against C. perfringens infection.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China; Animal Husbandry Institute, Agriculture and Animal Husbandry Academy of Inner Mongolia, Hohhot 010031, China
| | - Jing Liang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Jian-Wei Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Li-Hua Xing
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Fen-Xin Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Na Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Yu-Jing Wu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Yu-Ze Ma
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Zhao-Rui Xing
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Xue Jiang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Xin-Yue Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Zheng-Xuan Lei
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Xiao Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China.
| | - Shui-Xing Yu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China.
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Qian Y, Jiang Y, Hong H, Gao X, Liu W, Chen M, Jin Q, Jin Z, Li X, Wang X, Li J, Liu Q, Zhang X, Zhang N, Wei Z. Pathological characteristics and congenital immunological responses of pigeons-infected with Neospora caninum. Microb Pathog 2023; 182:106224. [PMID: 37423494 DOI: 10.1016/j.micpath.2023.106224] [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: 03/30/2023] [Revised: 06/24/2023] [Accepted: 07/02/2023] [Indexed: 07/11/2023]
Abstract
Pigeons are natural intermediate host of Neospora caninum (N. caninum). In comparison to ruminants, N. caninum causes milder clinical symptoms and less financial loss to pigeons. Natural infectious rates and high prevalence of N. caninum in pigeons, and death cases of N. caninum-infected pigeons under experimental conditions have been reported, but the detailed pathological characteristics and congenital immunological responses of pigeons-infected with N. caninum remain not well described. In this study, pigeons were infected intraperitoneally with 107 N. caninum tachyzoites. N. caninum in tissues was detected by qPCR. Pathological changes of tissues were examined by hematoxylin-eosin staining. Blood smears were prepared for counting eosinophils changes in blood. Heterophil extracellular traps (HETs) in vivo and in vitro were quantified by Pico Green. N. caninum-induced HETs structures were observed by immunofluorescence staining. The model of pigeons-infected with N. caninum was successfully established. Lung and duodenum were the main target organs of pigeons-infected with N. caninum. N. caninum caused hemorrhage, edema and inflammatory cell infiltration in liver, pulmonary congestion and hemorrhage, organizational destruction in lung, and shorter villi or even disappear in duodenum. N. caninum also increased the number of eosinophils in blood of pigeons. Moreover, N. caninum-induced HETs release in the congenital immunological system of pigeons were first demonstrated, and the HETs structures were consisted of DNA as the skeleton and modified with citH3 and elastase. N. caninum-induced HETs release was related with NADPH oxidase, TLR 2 and 4, ERK1/2 and p38 MAPK signaling pathways, and glycolysis. In summary, it is the first report on the detailed pathological characteristics and congenital immunological responses of pigeons-infected with N. caninum, which may provide theoretical basis for the prevention and control of Neosporosis in pigeons.
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Affiliation(s)
- Yuxiao Qian
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Yuqian Jiang
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Hongrong Hong
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Xinxin Gao
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Wei Liu
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Meiyi Chen
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Qinqin Jin
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Zha Jin
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Xin Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, Jilin, China
| | - Xiaocen Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, Jilin, China
| | - Jianhua Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, Jilin, China
| | - Quan Liu
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, Jilin, China
| | - Nan Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, Jilin, China.
| | - Zhengkai Wei
- College of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong Province, PR China; College of Veterinary Medicine, Southwest University, Chongqing, 400715, China.
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Hasheminasab SS, Conejeros I, Gärtner U, Kamena F, Taubert A, Hermosilla CR. MCT-Dependent Cryptosporidium parvum-Induced Bovine Monocyte Extracellular Traps (METs) under Physioxia. BIOLOGY 2023; 12:961. [PMID: 37508391 PMCID: PMC10376234 DOI: 10.3390/biology12070961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/26/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023]
Abstract
The apicomplexan protozoan parasite Cryptosporidium parvum is responsible for cryptosporidiosis, which is a zoonotic intestinal illness that affects newborn cattle, wild animals, and people all over the world. Mammalian monocytes are bone marrow-derived myeloid leukocytes with important defense effector functions in early host innate immunity due to their ATP purinergic-, CD14- and CD16-receptors, adhesion, migration and phagocytosis capacities, inflammatory, and anti-parasitic properties. The formation of monocyte extracellular traps (METs) has recently been reported as an additional effector mechanism against apicomplexan parasites. Nonetheless, nothing is known in the literature on METs extrusion neither towards C. parvum-oocysts nor sporozoites. Herein, ATP purinergic receptor P2X1, glycolysis, Notch signaling, and lactate monocarboxylate transporters (MCT) were investigated in C. parvum-exposed bovine monocytes under intestinal physioxia (5% O2) and hyperoxia (21% O2; most commonly used hyperoxic laboratory conditions). C. parvum-triggered suicidal METs were confirmed by complete rupture of exposed monocytes, co-localization of extracellular DNA with myeloperoxidase (MPO) and histones (H1-H4) via immunofluorescence- and confocal microscopy analyses. C. parvum-induced suicidal METs resulted not only in oocyst entrapment but also in hindered sporozoite mobility from oocysts according to scanning electron microscopy (SEM) analyses. Early parasite-induced bovine monocyte activation, accompanied by membrane protrusions toward C. parvum-oocysts/sporozoites, was unveiled using live cell 3D-holotomographic microscopy analysis. The administration of NF449, an inhibitor of the ATP purinergic receptor P2X1, to monocytes subjected to varying oxygen concentrations did not yield a noteworthy decrease in C. parvum-induced METosis. This suggests that the cell death process is not dependent on P2X1. Additionally, blockage of glycolysis in monocyte through 2-deoxy glucose (2-DG) inhibition reduced C. parvum-induced METosis but not significantly. According to monocyte energetic state measurements, C. parvum-exposed cells neither increased extracellular acidification rates (ECAR) nor oxygen consumption rates (OCR). Lactate monocarboxylate transporters (MCT) inhibitor (i.e., AR-C 141990) treatments significantly diminished C. parvum-mediated METs extrusion under physioxic (5% O2) condition. Similarly, treatment with either DAPT or compound E, two selective Notch inhibitors, exhibited no significant suppressive effects on bovine MET production. Overall, for the first time, we demonstrate C. parvum-mediated METosis as P2X1-independent but as an MCT-dependent defense mechanism under intestinal physioxia (5% CO2) conditions. METs findings suggest anti-cryptosporidial effects through parasite entrapment and inhibition of sporozoite excystation.
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Affiliation(s)
- Seyed Sajjad Hasheminasab
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Iván Conejeros
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Ulrich Gärtner
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Faustin Kamena
- Laboratory for Molecular Parasitology, Department of Microbiology and Parasitology, University of Buea, Buea P.O. Box 63, Cameroon
| | - Anja Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Carlos R Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, 35392 Giessen, Germany
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Wang H, Wang Y, Wang X, Wei R, Wang X, Gong P, Zhang N, Zhang X, Li X, Li J. Trichomonas gallinae induces heterophil extracellular trap formation in pigeons. Parasitol Res 2023; 122:527-536. [PMID: 36522547 DOI: 10.1007/s00436-022-07755-6] [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: 06/23/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Abstract
Avian trichomonosis is a worldwide and cross-species epidemic, and the infection in pigeons is particularly severe. Although the disease causes a serious threat to poultry health resulting in significant economic losses, the relationship between Trichomonas gallinae (T. gallinae) and host innate immunity is still not clear. Extracellular traps (ETs) are an innate immunity response to parasitic infections. However, whether host cells can produce ETs after T. gallinae infection has not yet been reported. In the present study, the ability of T. gallinae to induce the production of heterophil extracellular traps (HETs) in pigeons was examined. T. gallinae-induced HETs were observed by scanning electron microscopy (SEM) and the main components of HETs were detected by fluorescence confocal microscopy. Changes in reactive oxygen species (ROS) and lactate dehydrogenase (LDH) were tested during the HETosis. A quantitative analysis of T. gallinae-induced HETs, the role of myeloperoxidase (MPO), store-operated Ca (2+) entry (SOCE), and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase in T. gallinae-induced HET formation were conducted by inhibitor assays. The results showed that T. gallinae induced ET formation in pigeon heterophils. ETs consisted of a DNA skeleton, neutrophil elastase (NE), MPO, and Histone3 (H3). T. gallinae-induced HETs formation in a dose- and time-dependent process. The release of T. gallinae-induced HETs depends on MPO, SOCE, and NADPH oxidase. Furthermore, after T. gallinae stimulated pigeon heterophils, ROS production was significantly increased, while no significant differences in the LDH activity were observed.
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Affiliation(s)
- Hongyu Wang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Yuru Wang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xuehan Wang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Ran Wei
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xiaocen Wang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Pengtao Gong
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Nan Zhang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xichen Zhang
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xin Li
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Jianhua Li
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
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Zhang J, Sun Y, Zheng J. The State of Art of Extracellular Traps in Protozoan Infections (Review). Front Immunol 2022; 12:770246. [PMID: 34970259 PMCID: PMC8712655 DOI: 10.3389/fimmu.2021.770246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/29/2021] [Indexed: 11/25/2022] Open
Abstract
Protozoan parasite infection causes severe diseases in humans and animals, leading to tremendous economic and medical pressure. Natural immunity is the first line of defence against parasitic infection. Currently, the role of natural host immunity in combatting parasitic infection is unclear, so further research on natural host immunity against parasites will provide a theoretical basis for the prevention and treatment of related parasitic diseases. Extracellular traps (ETs) are an important natural mechanism of immunity involving resistance to pathogens. When immune cells such as neutrophils and macrophages are stimulated by external pathogens, they release a fibrous network structure, consisting mainly of DNA and protein, that can capture and kill a variety of extracellular pathogenic microorganisms. In this review, we discuss the relevant recently reported data on ET formation induced by protozoan parasite infection, including the molecular mechanisms involved, and discuss the role of ETs in the occurrence and development of parasitic diseases.
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Affiliation(s)
- Jing Zhang
- Intensive Care Unit, First Hospital of Jilin University, Changchun, China.,Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Ying Sun
- Department of Respiratory and Critical Care Medicine, First Hospital of Jilin University, Changchun, China
| | - Jingtong Zheng
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
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Álvarez de Haro N, Van AP, Robb CT, Rossi AG, Desbois AP. Release of chromatin extracellular traps by phagocytes of Atlantic salmon, Salmo salar (Linnaeus, 1758). FISH & SHELLFISH IMMUNOLOGY 2021; 119:209-219. [PMID: 34438058 PMCID: PMC8653909 DOI: 10.1016/j.fsi.2021.08.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/18/2021] [Accepted: 08/22/2021] [Indexed: 05/05/2023]
Abstract
Neutrophils release chromatin extracellular traps (ETs) as part of the fish innate immune response to counter the threats posed by microbial pathogens. However, relatively little attention has been paid to this phenomenon in many commercially farmed species, despite the importance of understanding host-pathogen interactions and the potential to influence ET release to reduce disease outbreaks. The aim of this present study was to investigate the release of ETs by Atlantic salmon (Salmo salar L.) immune cells. Extracellular structures resembling ETs of different morphology were observed by fluorescence microscopy in neutrophil suspensions in vitro, as these structures stained positively with Sytox Green and were digestible with DNase I. Immunofluorescence studies confirmed the ET structures to be decorated with histones H1 and H2A and neutrophil elastase, which are characteristic for ETs in mammals and other organisms. Although the ETs were released spontaneously, release in neutrophil suspensions was stimulated most significantly with 5 μg/ml calcium ionophore (CaI) for 1 h, whilst the fish pathogenic bacterium Aeromonas salmonicida (isolates 30411 and Hooke) also exerted a stimulatory effect. Microscopic observations revealed bacteria in association with ETs, and fewer bacterial colonies of A. salmonicida Hooke were recovered at 3 h after co-incubation with neutrophils that had been induced to release ETs. Interestingly, spontaneous release of ETs was inversely associated with fish mass (p < 0.05), a surrogate for age. Moreover, suspensions enriched for macrophages and stimulated with 5 μg/ml CaI released ET-like structures that occasionally led to the formation of large clumps of cells. A deeper understanding for the roles and functions of ETs within innate immunity of fish hosts, and their interaction with microbial pathogens, may open new avenues towards protecting cultured stocks against infectious diseases.
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Affiliation(s)
- Neila Álvarez de Haro
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
| | - Andre P Van
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
| | - Calum T Robb
- University of Edinburgh, Centre for Inflammation Research, Queen's Medical Research Institute, Edinburgh, EH16 4TJ, United Kingdom
| | - Adriano G Rossi
- University of Edinburgh, Centre for Inflammation Research, Queen's Medical Research Institute, Edinburgh, EH16 4TJ, United Kingdom
| | - Andrew P Desbois
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom.
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9
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A Review of the Neutrophil Extracellular Traps (NETs) from Cow, Sheep and Goat Models. Int J Mol Sci 2021; 22:ijms22158046. [PMID: 34360812 PMCID: PMC8347029 DOI: 10.3390/ijms22158046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/28/2021] [Accepted: 07/01/2021] [Indexed: 12/11/2022] Open
Abstract
This review provides insight into the importance of understanding NETosis in cows, sheep, and goats in light of the importance to their health, welfare and use as animal models. Neutrophils are essential to innate immunity, pathogen infection, and inflammatory diseases. The relevance of NETosis as a conserved innate immune response mechanism and the translational implications for public health are presented. Increased understanding of NETosis in ruminants will contribute to the prediction of pathologies and design of strategic interventions targeting NETs. This will help to control pathogens such as coronaviruses and inflammatory diseases such as mastitis that impact all mammals, including humans. Definition of unique attributes of NETosis in ruminants, in comparison to what has been observed in humans, has significant translational implications for one health and global food security, and thus warrants further study.
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10
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Ramos-Martínez E, Hernández-González L, Ramos-Martínez I, Pérez-Campos Mayoral L, López-Cortés GI, Pérez-Campos E, Mayoral Andrade G, Hernández-Huerta MT, José MV. Multiple Origins of Extracellular DNA Traps. Front Immunol 2021; 12:621311. [PMID: 33717121 PMCID: PMC7943724 DOI: 10.3389/fimmu.2021.621311] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/06/2021] [Indexed: 01/21/2023] Open
Abstract
Extracellular DNA traps (ETs) are evolutionarily conserved antimicrobial mechanisms present in protozoa, plants, and animals. In this review, we compare their similarities in species of different taxa, and put forward the hypothesis that ETs have multiple origins. Our results are consistent with a process of evolutionary convergence in multicellular organisms through the application of a congruency test. Furthermore, we discuss why multicellularity is related to the presence of a mechanism initiating the formation of ETs.
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Affiliation(s)
- Edgar Ramos-Martínez
- School of Sciences, Benito Juárez Autonomous University of Oaxaca, Oaxaca, Mexico
| | | | - Iván Ramos-Martínez
- Glycobiology, Cell Growth and Tissue Repair Research Unit (Gly-CRRET), Université Paris Est Créteil (UPEC), Créteil, France
| | - Laura Pérez-Campos Mayoral
- Research Centre Medicine UNAM-UABJO, Faculty of Medicine, Benito Juárez Autonomous University of Oaxaca, Oaxaca, Mexico
| | | | - Eduardo Pérez-Campos
- Biochemistry and Immunology Unit, National Technological of Mexico/ITOaxaca, Oaxaca, Mexico
- Research Centre Medicine UNAM-UABJO, Faculty of Medicine, Benito Juárez Autonomous University of Oaxaca, Oaxaca, Mexico
| | - Gabriel Mayoral Andrade
- Research Centre Medicine UNAM-UABJO, Faculty of Medicine, Benito Juárez Autonomous University of Oaxaca, Oaxaca, Mexico
| | | | - Marco V. José
- Theoretical Biology Group, National Autonomous University of Mexico, Mexico City, Mexico
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11
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Vélez J, Velasquez Z, Silva LMR, Gärtner U, Failing K, Daugschies A, Mazurek S, Hermosilla C, Taubert A. Metabolic Signatures of Cryptosporidium
parvum-Infected HCT-8 Cells and Impact of Selected Metabolic Inhibitors on C. parvum Infection under Physioxia and Hyperoxia. BIOLOGY 2021; 10:biology10010060. [PMID: 33467500 PMCID: PMC7831031 DOI: 10.3390/biology10010060] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 12/12/2022]
Abstract
Cryptosporidium parvum is an apicomplexan zoonotic parasite recognized as the second leading-cause of diarrhoea-induced mortality in children. In contrast to other apicomplexans, C.
parvum has minimalistic metabolic capacities which are almost exclusively based on glycolysis. Consequently, C. parvum is highly dependent on its host cell metabolism. In vivo (within the intestine) infected epithelial host cells are typically exposed to low oxygen pressure (1-11% O2, termed physioxia). Here, we comparatively analyzed the metabolic signatures of C. parvum-infected HCT-8 cells cultured under both, hyperoxia (21% O2), representing the standard oxygen condition used in most experimental settings, and physioxia (5% O2), to be closer to the in vivo situation. The most pronounced effect of C. parvum infection on host cell metabolism was, on one side, an increase in glucose and glutamine uptake, and on the other side, an increase in lactate release. When cultured in a glutamine-deficient medium, C. parvum infection led to a massive increase in glucose consumption and lactate production. Together, these results point to the important role of both glycolysis and glutaminolysis during C. parvum intracellular replication. Referring to obtained metabolic signatures, we targeted glycolysis as well as glutaminolysis in C. parvum-infected host cells by using the inhibitors lonidamine [inhibitor of hexokinase, mitochondrial carrier protein (MCP) and monocarboxylate transporters (MCT) 1, 2, 4], galloflavin (lactate dehydrogenase inhibitor), syrosingopine (MCT1- and MCT4 inhibitor) and compound 968 (glutaminase inhibitor) under hyperoxic and physioxic conditions. In line with metabolic signatures, all inhibitors significantly reduced parasite replication under both oxygen conditions, thereby proving both energy-related metabolic pathways, glycolysis and glutaminolysis, but also lactate export mechanisms via MCTs as pivotal for C. parvum under in vivo physioxic conditions of mammals.
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Affiliation(s)
- Juan Vélez
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University-Giessen, Frankfurter Str. 100, 35392 Giessen, Germany;
- Correspondence:
| | - Zahady Velasquez
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
| | - Liliana M. R. Silva
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
| | - Ulrich Gärtner
- Institute of Anatomy and Cell Biology, Justus Liebig University-Giessen, Aulweg 123, 35392 Giessen, Germany;
| | - Klaus Failing
- Unit for Biomathematics and Data Processing, Justus Liebig University-Giessen, Frankfurter Str. 95, 35392 Giessen, Germany;
| | - Arwid Daugschies
- Institute of Parasitology, University of Leipzig, An den Tierkliniken 35, 04103 Leipzig, Germany;
| | - Sybille Mazurek
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University-Giessen, Frankfurter Str. 100, 35392 Giessen, Germany;
| | - Carlos Hermosilla
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
| | - Anja Taubert
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
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12
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Ehrens A, Lenz B, Neumann AL, Giarrizzo S, Reichwald JJ, Frohberger SJ, Stamminger W, Buerfent BC, Fercoq F, Martin C, Kulke D, Hoerauf A, Hübner MP. Microfilariae Trigger Eosinophil Extracellular DNA Traps in a Dectin-1-Dependent Manner. Cell Rep 2021; 34:108621. [PMID: 33440150 DOI: 10.1016/j.celrep.2020.108621] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 08/03/2020] [Accepted: 12/18/2020] [Indexed: 12/30/2022] Open
Abstract
Eosinophils mediate protection against filarial nematodes. Our results demonstrate that eosinophil extracellular traps (EETosis) are induced by microfilariae and infective L3 larvae of Litomosoides sigmodontis. These extracellular DNA traps inhibit microfilariae motility in a DNA- and contact-dependent manner in vitro. Accordingly, microfilariae-injection triggers DNA release in an eosinophil-dependent manner in vivo and microfilariae covered with DNA traps are cleared more rapidly. Using dectin-1, we identify the required receptor for the microfilariae-induced EETosis, whereas signaling via other C-type lectin receptors, prior priming of eosinophils, and presence of antibodies are not required. The DNA released upon microfilariae-induced EETosis is mainly of mitochondrial origin, but acetylated and citrullinated histones are found within the traps. We further demonstrate that the presented DNA-dependent inhibition of microfilariae motility by eosinophils represents a conserved mechanism, as microfilariae from L. sigmodontis and the canine heartworm Dirofilaria immitis induce ETosis in murine and human eosinophils.
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Affiliation(s)
- Alexandra Ehrens
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Benjamin Lenz
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Anna-Lena Neumann
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Samuela Giarrizzo
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Julia Jennifer Reichwald
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Stefan Julian Frohberger
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Wiebke Stamminger
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Benedikt Christian Buerfent
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany
| | - Frédéric Fercoq
- UMR7245 MCAM Museum National d'Histoire Naturelle, CNRS, Paris, France
| | - Coralie Martin
- UMR7245 MCAM Museum National d'Histoire Naturelle, CNRS, Paris, France
| | - Daniel Kulke
- Elanco Animal Health - Research and Exploratory Development, Monheim 40789, Germany
| | - Achim Hoerauf
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany; German Center for Infection Research (DZIF), partner site Bonn-Cologne, Bonn, Germany
| | - Marc Peter Hübner
- Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn 53127, Germany; German Center for Infection Research (DZIF), partner site Bonn-Cologne, Bonn, Germany.
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13
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Wu D, Li S, Liu X, Xu J, Jiang A, Zhang Y, Liu Z, Wang J, Zhou E, Wei Z, Yang Z, Guo C. Alpinetin prevents inflammatory responses in OVA-induced allergic asthma through modulating PI3K/AKT/NF-κB and HO-1 signaling pathways in mice. Int Immunopharmacol 2020; 89:107073. [PMID: 33039967 DOI: 10.1016/j.intimp.2020.107073] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 12/11/2022]
Abstract
Allergic asthma is the most common type of asthma which characterized by inflammatory responses of the airways. Alpinetin, a flavonoid compound derived from the ginger family of medicinal herbs, possesses various biological properties including anti-inflammatory, anti-oxidant and other medical effects. In this study, we aimed to evaluate the effects of alpinetin on OVA-induced allergic asthma, and further to examine its molecular mechanisms underlying these processes in vivo and in vitro. Mice were sensitized and challenged with OVA to build allergic asthma model in vivo. Bronchoalveolar lavage fluid (BALF) was collected for inflammatory cells analysis and lung tissues were examined for histopathological examination. The levels of IL-5, IL-13, IL-4, IgE, TNF-α, IL-6 and IL-1β were determined by the respective ELISA kits. The PI3K/AKT/NF-κB and HO-1 signaling pathways were examined by western blot analysis. The results showed that alpinetin significantly ameliorated OVA-induced pathologic changes of lungs, such as decreasing massive inflammatory cell infiltration and mucus hypersecretion, and reduced the number of inflammatory cells in BALF. Alpinetin also decreased the OVA-induced levels of IL-4, IL-5, IL-13 and IgE. Furthermore, alpinetin inhibited OVA-induced phosphorylation of p65, IκB, PI3K and AKT, and the activity of HO-1 in vivo. More importantly, these anti-inflammatory effects and molecular mechanisms of alpinetin has also been confirmed in LPS-stimulated RAW 264.7 macrophages in vitro. In conclusion, above results indicate that alpinetin exhibites a potent anti-inflammatory activity in allergic asthma through modulating PI3K/AKT/NF-κB and HO-1 signaling pathways, which would be used as a promising therapy agent for allergic asthma.
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Affiliation(s)
- Di Wu
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Shuangqiu Li
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Xiao Liu
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Jingnan Xu
- College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, PR China
| | - Aimin Jiang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Yong Zhang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Ziyi Liu
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Jingjing Wang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China
| | - Ershun Zhou
- College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, PR China
| | - Zhengkai Wei
- College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, PR China
| | - Zhengtao Yang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China; College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, PR China.
| | - Changmin Guo
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin Province, PR China.
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14
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Wang X, Li X, Gong P, Zhang N, Li L, Ouyang H, Jia L, Li J, Zhang X. Pyroptosis executioner gasdermin D contributes to host defense and promotes Th 1 immune response during Neospora caninum infection. Vet Parasitol 2020; 286:109254. [PMID: 33032075 DOI: 10.1016/j.vetpar.2020.109254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 09/19/2020] [Accepted: 09/20/2020] [Indexed: 02/05/2023]
Abstract
Neospora caninum (N. caninum) is an intracellular parasite and is the causative agent of neosporosis, which leads to reproductive failure in cattle. Pyroptosis is a recently discovered form of programmed cell death executed by gasdermin D (GSDMD). This cell death mechanism is an important host defense against intracellular pathogens. However, pyroptosis induced by N. caninum is poorly understood. The aim of this study was to explore the roles of GSDMD-mediated pyroptosis during N. caninum infection in vivo. N. caninum-infected wild type mice and GSDMD-deficient mice were used to evaluate host resistance and its ability to affect immune response against this parasite. The results showed that GSDMD deficiency significantly reduced survival and impaired the host's abilities to clear parasite loads in tissues, monocytes/macrophages and neutrophils. Additionally, GSDMD was essential for circulating IL-18 and IFN-γ production induced by N. caninum infection, indicating that GSDMD can mediate the Th 1 immune response against N. caninum infection. Additional data revealed that treatment with exogenous recombinant IL-18 in N. caninum-infected Gsdmd-/- mice rescues the reduction of circulating IFN-γ production to help eliminate the parasite. Taken together, our data indicate that GSDMD-mediated pyroptosis plays a vital role in maintaining host resistance to N. caninum and is essential for clearing the parasite. This form of programmed cell death promotes the Th 1 immune response by controlling IL-18 release and is considered a host defense against N. caninum. This study expands our understanding of interactions between host immune response/defense and N. caninum infection.
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Affiliation(s)
- Xiaocen Wang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
| | - Xin Li
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
| | - Pengtao Gong
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
| | - Nan Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
| | - Lu Li
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
| | - Hongsheng Ouyang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin, China.
| | - Lijun Jia
- Laboratory of Veterinary Microbiology, Department of Veterinary Medicine, Yanbian University, Yanji 133002, Jilin, China.
| | - Jianhua Li
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China.
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15
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Mota CM, Lima-Junior DDS, Ferreira França FB, Aguillón Torres JD, Barros PDSC, Santiago FM, Silva JS, Mineo JR, Zamboni DS, Mineo TWP. Interplay Between Reactive Oxygen Species and the Inflammasome Are Crucial for Restriction of Neospora caninum Replication. Front Cell Infect Microbiol 2020; 10:243. [PMID: 32523898 PMCID: PMC7261871 DOI: 10.3389/fcimb.2020.00243] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 04/27/2020] [Indexed: 12/15/2022] Open
Abstract
Neospora caninum poses as a considerable threat to animal health and generates significant economic impact in livestock production worldwide. Here, we have investigated the mechanism that underlies the participation of the inflammasome complex and Reactive Oxygen Species (ROS) in the regulation of immune responses during N. caninum infection. For that purpose, we used in vitro (bone marrow derived macrophages) and in vivo mouse models of infection. Our results show that NLRP3 and NLRC4 receptors, alongside with ASC and Caspase-1, are required for proper activation of the inflammasome during N. caninum infection. As expected, the engagement of these pathways is crucial for IL-1α, IL-1β, and IL-18 production, as well as the induction of pyroptosis. Our results also show that N. caninum induces ROS production dependent of the inflammasome assembly, which in its turn also depends on MyD88/NF-κB-induced ROS to maintain its activation and, ultimately, lead to restriction of parasite replication.
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Affiliation(s)
- Caroline M Mota
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | | | - Flávia Batista Ferreira França
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Jhoan David Aguillón Torres
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Patrício da Silva Cardoso Barros
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Fernanda Maria Santiago
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Joāo Santana Silva
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - José Roberto Mineo
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Dario S Zamboni
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Tiago W P Mineo
- Laboratory of Immunoparasitology "Dr. Mário Endsfeldz Camargo", Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, Brazil
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16
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From Signaling Pathways to Distinct Immune Responses: Key Factors for Establishing or Combating Neospora caninum Infection in Different Susceptible Hosts. Pathogens 2020; 9:pathogens9050384. [PMID: 32429367 PMCID: PMC7281608 DOI: 10.3390/pathogens9050384] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
: Neospora caninum is an intracellular protozoan parasite affecting numerous animal species. It induces significant economic losses because of abortion and neonatal abnormalities in cattle. In case of infection, the parasite secretes numerous arsenals to establish a successful infection in the host cell. In the same context but for a different purpose, the host resorts to different strategies to eliminate the invading parasite. During this battle, numerous key factors from both parasite and host sides are produced and interact for the maintaining and vanishing of the infection, respectively. Although several reviews have highlighted the role of different compartments of the immune system against N. caninum infection, each one of them has mostly targeted specific points related to the immune component and animal host. Thus, in the current review, we will focus on effector molecules derived from the host cell or the parasite using a comprehensive survey method from previous reports. According to our knowledge, this is the first review that highlights and discusses immune response at the host cell-parasite molecular interface against N. caninum infection in different susceptible hosts.
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17
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Wang JJ, Wei ZK, Han Z, Liu ZY, Zhang Y, Zhu XY, Li XW, Wang K, Yang ZT. Sodium fluoride exposure triggered the formation of neutrophil extracellular traps. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113583. [PMID: 31780361 DOI: 10.1016/j.envpol.2019.113583] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/15/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
In recent years, numerous studies paid more attention to the molecular mechanisms associated with fluoride toxicity. However, the detailed mechanisms of fluoride immunotoxicity in bovine neutrophils remain unclear. Neutrophil extracellular traps (NETs) is a novel immune mechanism of neutrophils. We hypothesized that sodium fluoride (NaF) can trigger NETs activation and release, and investigate the related molecular mechanisms during the process. We exposed peripheral blood neutrophils to 1 mM NaF for 120 min in bovine neutrophils. The results showed that NaF exposure triggered NET-like structures decorated with histones and granule proteins. Quantitative measurement of NETs content correlated positively with the concentration of NaF. Mechanistically, NaF exposure increased reactive oxygen species (ROS) levels and phosphorylation levels of ERK, p38, whereas inhibiting the activities of superoxide dismutase (SOD) and catalase (CAT) compared with control neutrophils. NETs formation is induced by NaF and this effect was inhibited by the inhibitors diphenyleneiodonium chloride (DPI), U0126 and SB202190. Our findings described the potential importance of NaF-triggered NETs related molecules, which might help to extend the current understanding of NaF immunotoxicity.
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Affiliation(s)
- Jing-Jing Wang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China; College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Zheng-Kai Wei
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Zhen Han
- College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Zi-Yi Liu
- College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Yong Zhang
- College of Veterinary Medicine, Jilin University, Jilin, Changchun 130062, People's Republic of China
| | - Xing-Yi Zhu
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Xiao-Wen Li
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Kai Wang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China
| | - Zheng-Tao Yang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong 528231, People's Republic of China.
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18
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Imlau M, Conejeros I, Muñoz-Caro T, Zhou E, Gärtner U, Ternes K, Taubert A, Hermosilla C. Dolphin-derived NETosis results in rapid Toxoplasma gondii tachyzoite ensnarement and different phenotypes of NETs. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 103:103527. [PMID: 31655127 DOI: 10.1016/j.dci.2019.103527] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 10/20/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
Toxoplasma gondii is a cosmopolitan zoonotic parasite and nowadays considered as an emerging neozoan pathogen in the marine environment. Cetacean innate immune reactions against T. gondii stages have not yet been investigated. Thus, T. gondii tachyzoites were utilized to trigger neutrophil extracellular traps (NETs) in bottlenose dolphin (Tursiops truncatus) polymorphonuclear neutrophils (PMN). Scanning electron microscopy unveiled T. gondii tachyzoites as potent and rapid inducers of cetacean-derived NETosis. Co-localization of extracellular chromatin with global histones, granulocytic myeloperoxidase and neutrophil elastase confirmed classical characteristics of NETosis. Interestingly, different phenotypes of NETs were induced by tachyzoites resulting in spread, diffuse and aggregated NET formation and moreover, 'anchored' and 'cell free' NETosis was also detected. Current data indicate that cetacean-derived NETosis might represent an early, ancient and well-conserved host innate defense mechanism that not only acts against T. gondii but might also occur in response to other closely related emerging apicomplexan parasites affecting marine cetaceans.
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Affiliation(s)
- Michelle Imlau
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany.
| | - Iván Conejeros
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany.
| | - Tamara Muñoz-Caro
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
| | - Ershun Zhou
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
| | - Ulrich Gärtner
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, Giessen, Germany
| | | | - Anja Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
| | - Carlos Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
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19
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Wei Z, Zhao Y, Zhang N, Han Z, Liu X, Jiang A, Zhang Y, Wang C, Gong P, Li J, Zhang X, Yang Z. Eimeria tenella induces the release of chicken heterophil extracellular traps. Vet Parasitol 2019; 275:108931. [PMID: 31605936 DOI: 10.1016/j.vetpar.2019.108931] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 09/23/2019] [Accepted: 09/23/2019] [Indexed: 01/04/2023]
Abstract
Avian coccidiosis makes a great threat and economic loss to the poultry industry, and fully understanding the innate immune response of chicken against E. tenella infection will play a significant role in avian coccidiosis prevention and treatment. Extracellular traps have been reported as a novel defense mechanism of host against pathogens infection. However, the interaction between chicken heterophil extracellular traps and E. tenella has remained not well known. Thus, this study aims to investigate the effects of E. tenella on chicken heterophil extracellular traps (ETs), and try to clarify the regulatory mechanisms in this process. E. tenella-triggered chicken heterophil ETs structures were analyzed by using scanning electron microscopy (SEM) and scanning confocal microscope. Inhibitors and Pico Green® were used to quantify E. tenella - triggered chicken heterophil ETs release. The results showed that E. tenella sporozoites significantly induced chicken heterophil ETs-like structures release, and histone and elastin co-existed with DNA in these structures of chicken heterophil ETs. Furthermore, it was also demonstrated that NADPH, p38 or Rac1 signaling pathways participated in E. tenella sporozoites-induced chicken heterophil ETs release, but more key molecules or signaling pathways involved in this process still needed to be further investigated. Taken together, this study reports that E. tenella sporozoites could induce chicken heterophil ETs formation via NADPH, p38 and Rac1 signaling pathways, which further suggests the critical role of heterophil ETs in the process of chicken against E. tenella infection.
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Affiliation(s)
- Zhengkai Wei
- College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, China; Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Yingchi Zhao
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Nan Zhang
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Zhen Han
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Xiao Liu
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Aimin Jiang
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Yong Zhang
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Chaoqun Wang
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Pengtao Gong
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Jianhua Li
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China
| | - Xichen Zhang
- Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China.
| | - Zhengtao Yang
- College of Life Sciences and Engineering, Foshan University, Foshan 528225, Guangdong Province, China; Key Laboratory of Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin province, China.
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20
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Schulz M, Zambrano F, Schuppe HC, Wagenlehner F, Taubert A, Ulrich G, Sánchez R, Hermosilla C. Determination of leucocyte extracellular traps (ETs) in seminal fluid (ex vivo) in infertile patients-A pilot study. Andrologia 2019; 51:e13356. [PMID: 31287181 DOI: 10.1111/and.13356] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/22/2019] [Accepted: 05/28/2019] [Indexed: 12/29/2022] Open
Abstract
Leucocytospermia has been associated with loss of sperm function. Extracellular traps (ETs) of leucocytes are produced during innate immune response. ETs can be activated by spermatozoa in contact with polymorphonuclear (in vitro), inducing sperm entrapment and decrease motility. In this pilot study, we describe the results of ETosis ex vivo, in seminal fluid (SF) smear of infertile patients, associating ETs with leucocytospermia and bacteriospermia. In 21 infertile patients, semen parameters (WHO, 2010), microbiological study, leucocytospermia and presence of ETs in SF were determined. Leucocytes (CD45, CD15 and CD68) were evaluated by immunostaining in SF smears. Indirect immunofluorescence (global histone and H4-citrullinated 3) and scanning electron microscopy (SEM) were used to determine ETs morphology. In 28.6% of patients presented leucocytospermia without bacteriospermia, all of them presented a large number of ETs in the SF smears examined. About 76.6% of the patients without leucocytospermia were positive for ETs. Samples with leucocytospermia have a higher number of ETs and would be related to the amount of leucocytes in the SF. The morphological predominant ETs were diffuse (diffETs) and spread (sprETs). The formation of ETs indicates leucocyte activation in semen, and it was observed that ETosis does not depend exclusively on the presence of bacterial contamination.
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Affiliation(s)
- Mabel Schulz
- Laboratory in Reproductive Medicine and Molecular Endocrinology, Centre of Traslational Medicine (CEMT), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Preclinical Science, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Doctoral Program in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Fabiola Zambrano
- Laboratory in Reproductive Medicine and Molecular Endocrinology, Centre of Traslational Medicine (CEMT), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Doctoral Program in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Hans-Christian Schuppe
- Department of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Giessen, Germany
| | - Florian Wagenlehner
- Department of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Giessen, Germany
| | - Anja Taubert
- Institute of Parasitology, Justus Liebig University Giessen, Giessen, Germany
| | - Gärtner Ulrich
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, Giessen, Germany
| | - Raúl Sánchez
- Laboratory in Reproductive Medicine and Molecular Endocrinology, Centre of Traslational Medicine (CEMT), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Preclinical Science, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Carlos Hermosilla
- Institute of Parasitology, Justus Liebig University Giessen, Giessen, Germany
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21
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Schulz M, Zambrano F, Schuppe HC, Wagenlehner F, Taubert A, Gaertner U, Sánchez R, Hermosilla C. Monocyte-derived extracellular trap (MET) formation induces aggregation and affects motility of human spermatozoa in vitro. Syst Biol Reprod Med 2019; 65:357-366. [PMID: 31208212 DOI: 10.1080/19396368.2019.1624873] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The presence of bacteria and/or leukocytes can alter semen quality resulting in low sperm quality and infertility. Inflammation or infection increases the numbers of PMN or macrophages/monocytes in male genital tract. Release of extracellular traps (ETs) by leukocytes has been recognized as a novel mechanism of early host innate immunity, in response to invasive pathogens. This is the first work that evaluated the mechanism of triggered ETs in monocytes co-incubated with spermatozoa or bacteria and the effect on sperm function. Selected spermatozoa and human monocytes isolated from peripheral blood were obtained by healthy donors. Two experimental models were developed, one aseptic (non-infectious) incubating spermatozoa and monocytes, and septic models (infectious) incubating spermatozoa with monocytes and uropathogenic Escherichia coli (E. coli). ETs of monocytes (METs) (DNA, global histone and citrullinated histones) were visualized by scanning electron microscopy (SEM) and immunofluorescence analyses. Progressive motility was performed at 0, 10, 30, 60, and 180 min after co-incubation with CASA system. SEM- and immunofluorescence-analyses revealed human spermatozoa alone or in the presence of E. coli as strong inducers METs. In aseptic model, the motility decreased to 65.2 ± 3.5% at 10 min of incubation and 29.3 ± 3.3% at 30 min (p < 0.001). In septic model, motility decreased to 44.5 ± 5.9% (10 min) and 12.7 ± 2.2% (30 min) (p < 0.001). MET-derived small spermatozoa aggregations were observed in both models. METs might physically block spermatozoa and decrease motility after a brief contact. This may impair male fertility, especially in patients with genital tract infections or chronic inflammation. Abbreviations: PMN: polymorphonuclear; ETs: extracellular traps; E. coli: Escherichia coli; METs: ETs of monocytes; SEM: scanning electron microscopy; NE: neutrophil elastase; MPO: myeloperoxidase; MAGI: male accessory gland infection; PBMC: peripheral blood mononuclear cells; RT: room temperature; CFU: colony forming units; CASA: computer-aided sperm analysis; H4Cit3: histone H4 citrullinated 3.
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Affiliation(s)
- Mabel Schulz
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera , Temuco , Chile.,Doctoral Program in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera , Temuco , Chile.,Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen , Giessen , Germany
| | - Fabiola Zambrano
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera , Temuco , Chile.,Department of Preclinical Science, Faculty of Medicine, Universidad de La Frontera , Temuco , Chile
| | - Hans-Christian Schuppe
- Department of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen , Giessen , Germany
| | - Florian Wagenlehner
- Department of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen , Giessen , Germany
| | - Anja Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen , Giessen , Germany
| | - Ulrich Gaertner
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen , Giessen , Germany
| | - Rául Sánchez
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera , Temuco , Chile.,Department of Preclinical Science, Faculty of Medicine, Universidad de La Frontera , Temuco , Chile
| | - Carlos Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen , Giessen , Germany
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22
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Villagra-Blanco R, Silva LMR, Conejeros I, Taubert A, Hermosilla C. Pinniped- and Cetacean-Derived ETosis Contributes to Combating Emerging Apicomplexan Parasites ( Toxoplasma gondii, Neospora caninum) Circulating in Marine Environments. BIOLOGY 2019; 8:biology8010012. [PMID: 30857289 PMCID: PMC6466332 DOI: 10.3390/biology8010012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/25/2019] [Accepted: 03/06/2019] [Indexed: 12/15/2022]
Abstract
Leukocytes play a major role in combating infections either by phagocytosis, release of antimicrobial granules, or extracellular trap (ET) formation. ET formation is preceded by a certain leukocyte cell death form, known as ETosis, an evolutionarily conserved mechanism of the innate immune system also observed in marine mammals. Besides several biomolecules and microbial stimuli, marine mammal ETosis is also trigged by various terrestrial protozoa and metazoa, considered nowadays as neozoan parasites, which are circulating in oceans worldwide and causing critical emerging marine diseases. Recent studies demonstrated that pinniped- and cetacean-derived polymorphonuclear neutrophils (PMNs) and monocytes are able to form different phenotypes of ET structures composed of nuclear DNA, histones, and cytoplasmic peptides/proteases against terrestrial apicomplexan parasites, e.g., Toxoplasma gondii and Neospora caninum. Detailed molecular analyses and functional studies proved that marine mammal PMNs and monocytes cast ETs in a similar way as terrestrial mammals, entrapping and immobilizing T. gondii and N. caninum tachyzoites. Pinniped- and cetacean leukocytes induce vital and suicidal ETosis, with highly reliant actions of nicotinamide adenine dinucleotide phosphate oxidase (NOX), generation of reactive oxygen species (ROS), and combined mechanisms of myeloperoxidase (MPO), neutrophil elastase (NE), and DNA citrullination via peptidylarginine deiminase IV (PAD4).This scoping review intends to summarize the knowledge on emerging protozoans in the marine environment and secondly to review limited data about ETosis mechanisms in marine mammalian species.
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Affiliation(s)
| | - Liliana M R Silva
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
| | - Iván Conejeros
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
| | - Anja Taubert
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
| | - Carlos Hermosilla
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
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23
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Fei L, Zhengkai W, Weina J, Lili C, Yuhang G, Zhengtao Y, Jianhua L, Biao Y, Xichen Z, Pengtao G. Trichomonas vaginalis triggers the release of THP-1 extracellular traps. Parasitol Res 2018; 118:267-274. [PMID: 30426227 DOI: 10.1007/s00436-018-6139-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 11/06/2018] [Indexed: 11/28/2022]
Abstract
Trichomonas vaginalis is responsible for the prevalence of trichomoniasis, which may be one of the most epidemic nonviral sexually transmitted pathogens. Extracellular traps (ET) are a unique form of innate immunity against infection; they bind to and kill microorganisms. However, the effect of T. vaginalis on ET release in the human monocytic cell line THP-1 remains unclear. In the present study, the morphology of ET derived from THP-1 in response to T. vaginalis was observed by scanning electron microscopy (SEM). The results demonstrated ET entangling T. vaginalis. Then, the colocalization of histone (H3) and myeloperoxidase (MPO) with DNA was observed via fluorescence confocal microscopy. Colocalization revealed the classic characteristics of DNA decorated with H3 and MPO. T. vaginalis significantly increased reactive oxygen species (ROS) and THP-1-derived ET. In addition, we measured the levels of lactic dehydrogenase (LDH) and the phosphorylation of the P38 and ERK1/2 MAPK signaling pathways. The results indicated that the formation of ET induced by T. vaginalis was related to phosphorylation of the P38 and ERK1/2 MAPK signaling pathways but not to LDH levels. These data confirmed the phenomenon of THP-1-derived ET being triggered by T. vaginalis in vitro; this process may play a pivotal role in innate immunity during defense against T. vaginalis infection.
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Affiliation(s)
- Li Fei
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Wei Zhengkai
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Jiang Weina
- Department of Pathology, Qingdao Municipal Hospital, Qingdao, 266071, Shandong, China
| | - Cao Lili
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China.,Jilin Academy of Animal Husbandry and Veterinary Medicine, Changchun, 130062, Jilin, China
| | - Gao Yuhang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Yang Zhengtao
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Li Jianhua
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Yu Biao
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Zhang Xichen
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Gong Pengtao
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
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24
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Bovine macrophage-derived extracellular traps act as early effectors against the abortive parasite Neospora caninum. Vet Parasitol 2018; 258:1-7. [DOI: 10.1016/j.vetpar.2018.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 05/31/2018] [Accepted: 06/04/2018] [Indexed: 12/23/2022]
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