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Bian M, Li S, Zhou H, Bi L, Shen Y, Tingjin C, Yu X, Huang Y, Xu Q. ASPSCR-1 and Sirt-5 alleviate Clonorchis liver fluke rCsNOSIP-induced oxidative stress, proliferation, and migration in cholangiocarcinoma cells. PLoS Negl Trop Dis 2023; 17:e0011727. [PMID: 37948465 PMCID: PMC10664913 DOI: 10.1371/journal.pntd.0011727] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 11/22/2023] [Accepted: 10/16/2023] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND Clonorchiasis, caused by the infection of Clonorchis sinensis (C. sinensis), is a kind of neglected tropical disease, but it is highly related to cholangiocarcinoma. It has been well known that NO from chronic inflammation responses are thought to be a major component of the damage and ultimate carcinogenesis ESPs such as nitric oxide synthase interacting protein (NOSIP) are thought to enhance the damage. The objective of this study was to identify the protein candidates interact with recombinant CsNOSIP (rCsNOSIP) and explore their role involved in CCA development or progression. METHODS We applied HuProt microarray containing 21,000 probe sets for a systematic identification of rCsNOSIP-binding proteins and grouped binding hits by gene function. Pull-down assays were used to confirm the interaction of rCsNOSIP with alveolar soft part sarcoma (ASPSCR-1) and sirtuins 5 (Sirt-5). ASPSCR-1/Sirt-5 over-expression and siRNA knockdown experiments were employed for obtain of ASPSCR-1/Sirt-5 high or low expression (ASP-oe/Sirt5-oe or ASP-si/Sirt5-si) cholangiocarcinoma cell line (CCLP-1) cells. Nitric oxide (NO) and reactive oxygen species assay (ROS) as well as cell proliferation and wound-healing assays were performed to observe the effect of rCsNOSIP on ASP-oe/Sirt5-oe or ASP-si/Sirt5-si CCLP-1 cells. RESULTS Seventy candidate proteins protein "hits" were detected as rCsNOSIP-binding proteins by HuProt microarray and bioinformatics analysis. Pull down assay showed that ASPSCR-1 and Sirt-5 could interact with rCsNOSIP. In addition, endotoxin-free-rCsNOSIP could increase the production of NO and ROS and promote the migration of CCLP-1 cells, while its effect on enhancing cell proliferation was not significant. Furthermore, ROS/NO production, proliferation, or migration were increased in ASP-si or Sirt5-si CCLP-1 cells but decreased in Asp-oe or Sirt5-oe CCLP-1 cells when stimulated with rCsNOSIP. CONCLUSIONS Our findings suggest that CsNOSIP as a component of CsESPs might promote the development and invasion of CCA and Sirt5/ ASPSCR1 as host molecules might play a novel protective role against adverse stimulus during C. sinensis infection. This work supports the idea that CsESPs induce the occurrence and progression of CCA through ROS/RNS-induced oxidative and nitrative DNA damage.
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Affiliation(s)
- Meng Bian
- Department of Clinical laboratory, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, People’s Republic of China
- Zhengzhou Key Laboratory of Digestive System Tumor Marker Diagnosis, Zhengzhou, Henan, People’s Republic of China
| | - Shan Li
- Department of Pathology and Pathophysiology, School of Medicine, Henan University of Chinese Medicine, Zhengzhou, Henan, People’s Republic of China
| | - Hanzong Zhou
- The fifth Clinical Medical College of Henan University of Chinese Medicine (Zhengzhou People’s Hospital), Zhengzhou, Henan, People’s Republic of China
| | - Lijun Bi
- Institute of Biophysics, Chinese Academy of Scineces, Beijing, People’s Republic of China
| | - Yong Shen
- Department of Clinical laboratory, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, People’s Republic of China
- Zhengzhou Key Laboratory of Digestive System Tumor Marker Diagnosis, Zhengzhou, Henan, People’s Republic of China
| | - Chen Tingjin
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, People’s Republic of China
- Department of Pathology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Xinbing Yu
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yan Huang
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Qingxia Xu
- Department of Clinical laboratory, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, People’s Republic of China
- Zhengzhou Key Laboratory of Digestive System Tumor Marker Diagnosis, Zhengzhou, Henan, People’s Republic of China
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Koda S, Zhu XQ, Zheng KY, Yan C. Molecular Mechanisms of Clonorchis sinensis-Host Interactions and Implications for Vaccine Development. Front Cell Dev Biol 2022; 9:781768. [PMID: 35118069 PMCID: PMC8804234 DOI: 10.3389/fcell.2021.781768] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/14/2021] [Indexed: 12/12/2022] Open
Abstract
Infections caused by Clonorchis sinensis remain a significant public health challenge for both humans and animals, causing pyogenic cholangitis, cholelithiasis, cholecystitis, biliary fibrosis, and even cholangiocarcinoma. However, the strategies used by the parasite and the immunological mechanisms used by the host have not yet been fully understood. With the advances in technologies and the accumulated knowledge of host-parasite interactions, many vaccine candidates against liver flukes have been investigated using different strategies. In this review, we explore and analyze in-depth the immunological mechanisms involved in the pathogenicity of C. sinensis. We highlight the different mechanisms by which the parasite interacts with its host to induce immune responses. All together, these data will allow us to have a better understanding of molecular mechansism of host-parasite interactions, which may shed lights on the development of an effective vaccine against C. sinensis.
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Affiliation(s)
- Stephane Koda
- Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, National Experimental Demonstration Center for Basic Medicine Education, Xuzhou Medical University, Xuzhou, China
| | - Xing-Quan Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - Kui-Yang Zheng
- Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, National Experimental Demonstration Center for Basic Medicine Education, Xuzhou Medical University, Xuzhou, China
- *Correspondence: Kui-Yang Zheng, ; Chao Yan,
| | - Chao Yan
- Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, National Experimental Demonstration Center for Basic Medicine Education, Xuzhou Medical University, Xuzhou, China
- *Correspondence: Kui-Yang Zheng, ; Chao Yan,
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Improved genomic resources and new bioinformatic workflow for the carcinogenic parasite Clonorchis sinensis: Biotechnological implications. Biotechnol Adv 2018; 36:894-904. [DOI: 10.1016/j.biotechadv.2018.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/08/2018] [Accepted: 02/13/2018] [Indexed: 12/27/2022]
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Recombinant adenylate kinase 3 from liver fluke Clonorchis sinensis for histochemical analysis and serodiagnosis of clonorchiasis. Parasitology 2018; 145:1531-1539. [PMID: 29580315 DOI: 10.1017/s0031182018000434] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Due to the lack of an effective prophylactic intervention and diagnosis, human liver fluke Clonorchis sinensis continues to afflict a large human population, causing a chronic inflammatory bile duct disease. With an aim to identify target antigens for sensitive serodiagnosis, adenylate kinase 3 of C. sinensis (CsAK3) was successfully expressed in soluble form in Escherichia coli by fusion to an RNA-interacting domain derived from human Lys-tRNA synthetase and purified by Ni2+-affinity chromatography. Anti-CsAK3 serum was raised by immunization of mice, and Western blotting confirmed that CsAK3 was expressed in adult-stage C. sinensis. Histochemical analysis showed that CsAK3 was localized to the subtegumental tissue of C. sinensis and was excreted into the bile duct of the host. When tested against sera from various parasite-infected patients by enzyme-linked immunosorbent assay, the recombinant CsAK3 elicited a specific response to C. sinensis-infected sera. The results suggest that CsAK3, either alone or in combination with other antigens, could be used for improving the clinical diagnosis of clonorchiasis.
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Gadahi JA, Li B, Ehsan M, Wang S, Zhang Z, Wang Y, Hasan MW, Yan R, Song X, Xu L, Li X. Recombinant Haemonchus contortus 24 kDa excretory/secretory protein (rHcES-24) modulate the immune functions of goat PBMCs in vitro. Oncotarget 2018; 7:83926-83937. [PMID: 27893414 PMCID: PMC5356635 DOI: 10.18632/oncotarget.13487] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/15/2016] [Indexed: 11/30/2022] Open
Abstract
A 24 kDa protein is one of the important components in Haemonchus contortus (barber pole worm) excretory/secretory products (HcESPs), which was shown to have important antigenic function. However, little is known about the immunomodulatory effects of this proteinon host cell. In the present study gene encoding 24kDa excretory/secretory protein (HcES-24) was cloned. The recombinant protein of HcES-24 (rHcES-24) was expressed in a histidine-tagged fusion protein soluble form in Escherichia coli. Binding activity of rHcES-24 to goat PBMCs was confirmed by immunofluorescence assay (IFA) and its immunomudulatory effect on cytokine secretion, cell proliferation, cell migration and nitric oxide production were observed by co-incubation of rHcES-24. IFA results revealed that rHcES-24 could bind to the PBMCs. The interaction of rHcES-24 increased the production of IL4, IL10, IL17 and cell migration in dose dependent manner. However, rHcES-24 treatment significantly suppressed the production of IFNγ, proliferation of the PBMC and Nitric oxide (NO) production. Our findings showed that the rHcES-24 played important regulatory effects on the goat PBMCs.
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Affiliation(s)
- Javaid Ali Gadahi
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China.,Department of Veterinary Parasitology, Sindh Agriculture University Tandojam, Pakistan
| | - Baojie Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Muhammad Ehsan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Shuai Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Zhenchao Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Yujian Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | | | - Ruofeng Yan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Xiaokai Song
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Lixin Xu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Xiangrui Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
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Gadahi JA, Ehsan M, Wang S, Zhang Z, Yan R, Song X, Xu L, Li X. Recombinant protein of Haemonchus contortus small GTPase ADP-ribosylation factor 1 (HcARF1) modulate the cell mediated immune response in vitro. Oncotarget 2017; 8:112211-112221. [PMID: 29348819 PMCID: PMC5762504 DOI: 10.18632/oncotarget.22662] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 11/03/2017] [Indexed: 01/08/2023] Open
Abstract
ADP-ribosylation factors (ARFs) are members of the Ras-related small GTPase family involved in the vesicular trafficking regulation. Immunomodulatory effects of these proteinson host cell arenot being addressed yet. H. contortus small GTPase ADP-ribosylation 1 gene (HcARF1) was cloned and recombinant protein of HcARF1 (rHcARF1) was successfully expressed in Escherichia coli. Binding activity of rHcARF1 to goat PBMCs was confirmed by immunofluorescence assay (IFA) and its immunomudulatory effects on cytokine secretion, cell proliferation, cell migration and nitric oxide production (NO) were observed by co-incubation of rHcARF1. IFA results revealed that rHcARF1 could bind to the PBMCs. The interaction of rHcARF1 modulated the cytokine production, the production of IL-4, IL-10 and IL-17 was increased in a dose dependent manner, however, the IFN-γ production was significantly decreased. Cell migration and NO production were significantly increased by rHcARF1, whereas, rHcARF1 treatment significantly suppressed the proliferation of the PBMC in a dose dependent manner. Our findings showed that the rHcARF1 play important roles on the goat PBMCs.
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Affiliation(s)
- Javaid Ali Gadahi
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China.,Department of Veterinary Parasitology, Sindh Agriculture University, Tando Jam, Pakistan
| | - Muhammad Ehsan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Shuai Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Zhenchao Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Ruofeng Yan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Xiaokai Song
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Lixin Xu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Xiangrui Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
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Clonorchis sinensis Co-infection Could Affect the Disease State and Treatment Response of HBV Patients. PLoS Negl Trop Dis 2016; 10:e0004806. [PMID: 27348302 PMCID: PMC4922651 DOI: 10.1371/journal.pntd.0004806] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 06/04/2016] [Indexed: 12/14/2022] Open
Abstract
Background Clonorchis sinensis (C. sinensis) is considered to be an important parasitic zoonosis because it infects approximately 35 million people, while approximately 15 million were distributed in China. Hepatitis B virus (HBV) infection is a major public health issue. Two types of pathogens have the potential to cause human liver disease and eventually hepatocellular carcinoma. Concurrent infection with HBV and C. sinensis is often observed in some areas where C. sinensis is endemic. However, whether C. sinensis could impact HBV infection or vice versa remains unknown. Principal Findings Co-infection with C. sinensis and HBV develops predominantly in males. Co-infected C. sinensis and HBV patients presented weaker liver function and higher HBV DNA titers. Combination treatment with antiviral and anti-C. sinensis drugs in co-infected patients could contribute to a reduction in viral load and help with liver function recovery. Excretory-secretory products (ESPs) may, in some ways, increase HBV viral replication in vitro. A mixture of ESP and HBV positive sera could induce peripheral blood mononuclear cells (PBMCs) to produce higher level of Th2 cytokines including IL-4, IL-6 and IL-10 compared to HBV alone, it seems that due to presence of ESP, the cytokine production shift towards Th2. C. sinensis/HBV co-infected patients showed higher serum IL-6 and IL-10 levels and lower serum IFN-γ levels. Conclusions/Significance Patients with concomitant C. sinensis and HBV infection presented weaker liver function and higher HBV DNA copies. In co-infected patients, the efficacy of anti-viral treatment was better in patients who were prescribed with entecavir and praziquantel than entecavir alone. One possible reason for the weaker response to antiviral therapies in co-infected patients was the shift in cytokine production from Th1 to Th2 that may inhibit viral clearance. C. sinensis/HBV co-infection could exacerbate the imbalance of Th1/Th2 cytokine. Clonorchiasis and hepatitis B infection are infectious diseases that affect millions of people worldwide, especially in China. These two diseases are caused by two different pathogens, C. sinensis and hepatitis B virus, respectively. Concurrent infection between HBV and C. sinensis is often observed in some areas where C. sinensis is endemic. Both diseases share the same target organ, but there is little known on whether concomitant clonorchiasis could have an impact on HBV infection and the efficacy of antiviral treatment. In this study, we showed for the first time that co-infection with C. sinensis and HBV resulted in significantly higher liver transaminases levels as well as HBV DNA copies, indicating that co-infection with C. sinensis and HBV infection may aggravate the disease state. Combination treatment with antiviral and anti-C. sinensis drugs in co-infected patients could contribute to a reduction in viral load and help with liver function recovery. Furthermore, excretory-secretory products (ESPs) of C. sinensis may have a potential role in promoting HBV viral replication. This may explain, at least in part, the higher HBV DNA copies observed in co-infected patients. Additionally, a mixture of ESP and HBV positive sera could induce PBMCs to mainly produce Th2 cytokines such as IL-4, IL-6 and IL-10 compared to HBV alone. A possible reason for higher HBV DNA copies and a weaker response to antiviral therapies in co-infected patients was the shift in cytokine production from Th1 to Th2 that may inhibit viral clearance.
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Xu Y, Liang P, Bian M, Chen W, Wang X, Lin J, Shang M, Qu H, Wu Z, Huang Y, Yu X. Interleukin-13 is involved in the formation of liver fibrosis in Clonorchis sinensis-infected mice. Parasitol Res 2016; 115:2653-60. [PMID: 26993324 DOI: 10.1007/s00436-016-5012-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 03/10/2016] [Indexed: 02/06/2023]
Abstract
Clonorchiasis is a chronic infection disease often accompanied by formation of liver fibrosis. Previous study has identified that Clonorchis sinensis (C. sinensis, Cs) infection and CsRNASET2 (a member of CsESPs) immunization can drive Th2 immune response. IL-13, a multifunctional Th2 cytokine, has been widely confirmed to be profibrotic mediator. We want to determine whether IL-13 is involved in the generation of liver fibrosis during C. sinensis infection. A part of mice were infected with C. sinensis or immunized with CsRNASET2, respectively. Another part of mice were intravenously injected with rIL-13. Liver tissues of C. sinensis-infected mice were stained with hematoxylin-eosin and Masson's trichrome, respectively. The transcriptional levels of collagen-I, collagen-III, α-SMA, and TIMP-1 in the livers of infected mice and rIL-13-treated mice were measured by quantitative RT-PCR. Besides, splenocytes of C. sinensis-infected and CsRNASET2-immunized mice were isolated, respectively. The levels of IL-13 in splenocytes were detected by ELISA. Our results displayed that the livers of C. sinensis-infected mice had serious chronic inflammation and collagen deposition. The transcriptional levels of collagen-I, collagen-III, α-SMA, and TIMP-1 in the livers of C. sinensis-infected mice were obviously increased. Splenocytes from both C. sinensis-infected and CsRNASET2-immunized mice expressed high levels of IL-13. Moreover, rIL-13 treatment markedly promoted the transcriptional levels of collagen-I, collagen-III, α-SMA, and TIMP-1. These data implied that hepatic fibrosis was formed in the livers of C. sinensis-infected mice, and IL-13 induced by C. sinensis infection and CsRNASET2 immunization might favor this progression.
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Affiliation(s)
- Yanquan Xu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Pei Liang
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.,School of Tropical Medicine and Laboratory Medicine, Hainan Medical University, No. 3 Xueyuan Road, Haikou, Hainan, 571199, China
| | - Meng Bian
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Wenjun Chen
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Xiaoyun Wang
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Jinsi Lin
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Mei Shang
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Hongling Qu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Zhongdao Wu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Yan Huang
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
| | - Xinbing Yu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
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Bian M, Xu Q, Xu Y, Li S, Wang X, Sheng J, Wu Z, Huang Y, Yu X. Investigation on oxidative stress of nitric oxide synthase interacting protein from Clonorchis sinensis. Parasitol Res 2015; 115:77-83. [PMID: 26391171 DOI: 10.1007/s00436-015-4723-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 09/02/2015] [Indexed: 11/24/2022]
Abstract
Numerous evidences indicate that excretory-secretory products (ESPs) from liver flukes trigger the generation of free radicals that are associated with the initial pathophysiological responses in host cells. In this study, we first constructed a Clonorchis sinensis (C. sinensis, Cs)-infected BALB/c mouse model and examined relative results respectively at 3, 5, 7, and 9 weeks postinfection (p.i.). Quantitative reverse transcription (RT)-PCR indicated that the transcriptional level of both endothelial nitric oxide synthase (eNOS) and superoxide dismutase (SOD) gradually decreased with lastingness of infection, while the transcriptional level of inducible NOS (iNOS) significantly increased. The level of malondialdehyde (MDA) in sera of infected mouse significantly increased versus the healthy control group. These results showed that the liver of C. sinensis-infected mouse was in a state with elevated levels of oxidation stress. Previously, C. sinensis NOS interacting protein coding gene (named CsNOSIP) has been isolated and recombinant CsNOSIP (rCsNOSIP) has been expressed in Escherichia coli, which has been confirmed to be a component present in CsESPs and confirmed to play important roles in immune regulation of the host. In the present paper, we investigated the effects of rCsNOSIP on the lipopolysaccharide (LPS)-induced activated RAW264.7, a murine macrophage cell line. We found that endotoxin-free rCsNOSIP significantly promoted the levels of nitric oxide (NO) and reactive oxygen species (ROS) after pretreated with rCsNOSIP, while the level of SOD decreased. Furthermore, rCsNOSIP could also increase the level of lipid peroxidation MDA. Taken together, these results suggested that CsNOSIP was a key molecule which was involved in the production of nitric oxide (NO) and its reactive intermediates, and played an important role in oxidative stress during C. sinensis infection.
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Affiliation(s)
- Meng Bian
- Department of Clinical Laboratory, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou, Henan, China.,Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Qingxia Xu
- Department of Clinical Laboratory, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou, Henan, China
| | - Yanquan Xu
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Shan Li
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.,Department of Pathology and Pathophysiology, Henan University of Traditional Chinese Medicine, Zhengzhou, 450000, People's Republic of China
| | - Xiaoyun Wang
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Jiahe Sheng
- Department of Clinical Laboratory, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou, Henan, China
| | - Zhongdao Wu
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Yan Huang
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Xinbing Yu
- Key Laboratory for Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
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Xu Y, Lin J, Bian M, Chen W, Liang P, Wang X, Shang M, Qu H, Wu Z, Huang Y, Yu X. CsRNASET2 is an important component of Clonorchis sinensis responsible for eliciting Th2 immune response. Parasitol Res 2015; 114:2371-9. [PMID: 25828812 DOI: 10.1007/s00436-015-4435-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 03/11/2015] [Indexed: 01/15/2023]
Abstract
Many parasites can trigger the host immune response by releasing excretory/secretory proteins (ESPs). CsRNASET2, a glycosylated T2 ribonuclease present in ESPs of Clonorchis sinensis (C. sinensis, Cs), has recently been reported to possess potent effects in regulating mouse dendritic cells (DCs). However, it is unclear whether CsRNASET2 can induce adaptive immune response. In this study, we carried out further investigations on biochemical features of CsRNASET2. Besides, we immunized Balb/c mice with CsRNASET2 and orally infected Balb/c mice with C. sinensis, respectively. Sera of immunized mice were collected and evaluated for specific antibody titers by ELISA. Splenocytes of experimental mice were isolated and stimulated in vitro. The expression levels of IL-4 and IFN-γ in splenocytes of immunized mice and infected mice were detected by ELISA and flow cytometry. Our results showed that the sequence of CsRNASET2 had close relationship with the homologue from Echinococcus multilocularis. The conserved active site (CAS) motifs, active histidine residues, and N-linked glycosylation region of CsRNASET2 were close to each other in the three-dimensional structure. In addition, sera of CsRNASET2 immunized mice had obviously higher levels of specific antibody titers. Splenocytes from both CsRNASET2 immunized mice and C. sinensis infected mice expressed increased levels of IL-4, while the production of IFN-γ exhibited no significant difference. Immunization with CsRNASET2 elicited Th2 immune response by promoting the synthesis of IL-4, consistent with the immune response initiated by infection of C. sinensis. Taken together, these data suggested that CsRNASET2 was important for C. sinensis to trigger Th2 immune response.
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Affiliation(s)
- Yanquan Xu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
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Woo HS, Kim TY, Sohn WM, Yong TS. A tegument-specific venom allergen-like protein of Clonorchis sinensis. Parasitol Res 2014; 114:329-33. [PMID: 25403376 DOI: 10.1007/s00436-014-4212-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 10/30/2014] [Indexed: 01/01/2023]
Abstract
Venom allergen-like (VAL) proteins, members of the SCP/TAPS (sperm coating protein/Tpx-1/Ag5/PR-1/Sc7) protein superfamily, have been reported from several parasitic helminths. As little is known about their biological functions, a VAL protein of the Chinese liver fluke Clonorchis sinensis was cloned and characterized. A complementary DNA (cDNA) encoding a 25-kDa protein was identified from an EST database of C. sinensis. A BLAST search revealed that the protein shares 46% sequence identity with Schistosoma mansoni VAL 13 protein, and thus, the protein was named CsVAL13. Multiple sequence alignment indicated that the SCP/TAPS domain of CsVAL13 shares 39-46% sequence identity with VAL proteins from parasitic helminths. His and Tyr, which help to stabilize protein structure, were highly conserved across the VAL protein sequences. Phylogenetic analysis showed that the SCP/TAPS domain of the CsVAL13 sequence clusters together with other group 2 VAL protein sequences. In the homology-modeled structure of CsVAL13, an α-β-α sandwich and residues for a putative active site were highly conserved. Immune sera were obtained from BALB/c mice immunized with the recombinant CsVAL13 protein. Immunohistochemical localization using the immune sera revealed that CsVAL13 was distributed mainly in the tegument and intrauterine eggs of adult C. sinensis. These findings suggest that CsVAL13 may be involved in host-parasite interactions and immune stimulation on the surrounding host environments.
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Affiliation(s)
- Hea Sun Woo
- Department of Environmental Medical Biology and Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, 120-752, South Korea
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