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Zhang C, Wang H, Aji T, Li Z, Li Y, Ainiwaer A, Rousu Z, Li J, Wang M, Deng B, Duolikun A, Kang X, Zheng X, Yu Q, Shao Y, Zhang W, Vuitton DA, Tian Z, Sun H, Wen H. Targeting myeloid-derived suppressor cells promotes antiparasitic T-cell immunity and enhances the efficacy of PD-1 blockade (15 words). Nat Commun 2024; 15:6345. [PMID: 39068159 PMCID: PMC11283557 DOI: 10.1038/s41467-024-50754-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 07/18/2024] [Indexed: 07/30/2024] Open
Abstract
Immune exhaustion corresponds to a loss of effector function of T cells that associates with cancer or chronic infection. Here, our objective was to decipher the mechanisms involved in the immune suppression of myeloid-derived suppressor cells (MDSCs) and to explore the potential to target these cells for immunotherapy to enhance checkpoint blockade efficacy in a chronic parasite infection. We demonstrated that programmed cell-death-1 (PD-1) expression was significantly upregulated and associated with T-cell dysfunction in advanced alveolar echinococcosis (AE) patients and in Echinococcus multilocularis-infected mice. PD-1 blockade ex vivo failed to reverse AE patients' peripheral blood T-cell dysfunction. PD-1/PD-L1 blockade or PD-1 deficiency had no significant effects on metacestode in mouse model. This was due to the inhibitory capacities of immunosuppressive granulocytic MDSCs (G-MDSCs), especially in the liver surrounding the parasite pseudotumor. MDSCs suppressed T-cell function in vitro in an indoleamine 2, 3 dioxygenase 1 (IDO1)-dependent manner. Although depleting MDSCs alone restored T-cell effector functions and led to some limitation of disease progression in E. multilocularis-infected mice, combination with PD-1 blockade was better to induce antiparasitic efficacy. Our findings provide preclinical evidence in support of targeting MDSC or combining such an approach with checkpoint blockade in patients with advanced AE. (200 words).
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Affiliation(s)
- Chuanshan Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China.
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China.
- Key Laboratory of High Incidence Disease Research in Xingjiang, Ministry of Education, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China.
| | - Hui Wang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Key Laboratory of High Incidence Disease Research in Xingjiang, Ministry of Education, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Xinjiang Key Laboratory of Echinococcosis, Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, and WHO Collaborating Centre on Prevention and Case Management of Echinococcosis, Urumqi, Xinjiang, P. R. China
| | - Tuerganaili Aji
- Key Laboratory of High Incidence Disease Research in Xingjiang, Ministry of Education, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Department of Hepatic Hydatid and Hepatobiliary Surgery, Digestive and Vascular Surgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Zhide Li
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Yinshi Li
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Abidan Ainiwaer
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Zibigu Rousu
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Jing Li
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Maolin Wang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Department of Hepatic Hydatid and Hepatobiliary Surgery, Digestive and Vascular Surgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Bingqing Deng
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Adilai Duolikun
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Xuejiao Kang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Xuran Zheng
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Qian Yu
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Basic Medical College, Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Yingmei Shao
- Department of Hepatic Hydatid and Hepatobiliary Surgery, Digestive and Vascular Surgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
| | - Wenbao Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China
- Xinjiang Key Laboratory of Echinococcosis, Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, and WHO Collaborating Centre on Prevention and Case Management of Echinococcosis, Urumqi, Xinjiang, P. R. China
| | - Dominique A Vuitton
- WHO-Collaborating Centre for the Prevention and Treatment of Human Echinococcosis, Department of Parasitology, University Bourgogne Franche-Comté (EA 3181) and University Hospital, Besançon, France
| | - Zhigang Tian
- Hefei National Research Center for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P. R. China
| | - Haoyu Sun
- Hefei National Research Center for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P. R. China.
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China.
- Institute of Immunology, University of Science and Technology of China, Hefei, Anhui, P. R. China.
| | - Hao Wen
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University; Clinical Medicine Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, P. R. China.
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2
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Wang H, Li Y, Yu Q, Wang M, Ainiwaer A, Tang N, Zheng X, Duolikun A, Deng B, Li J, Shen Y, Zhang C. Immunological Characteristics of Hepatic Dendritic Cells in Patients and Mouse Model with Liver Echinococcus multilocularis Infection. Trop Med Infect Dis 2024; 9:95. [PMID: 38787028 PMCID: PMC11125766 DOI: 10.3390/tropicalmed9050095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/25/2024] Open
Abstract
The cestode Echinococcus multilocularis, which mainly dwells in the liver, leads to a serious parasitic liver disease called alveolar echinococcosis (AE). Despite the increased attention drawn to the immunosuppressive microenvironment formed by hepatic AE tissue, the immunological characteristics of hepatic dendritic cells (DCs) in the AE liver microenvironment have not been fully elucidated. Here, we profiled the immunophenotypic characteristics of hepatic DC subsets in both clinical AE patients and a mouse model. Single-cell RNA sequencing (scRNA-Seq) analysis of four AE patient specimens revealed that greater DC numbers were present within perilesional liver tissues and that the distributions of cDC and pDC subsets in the liver and periphery were different. cDCs highly expressed the costimulatory molecule CD86, the immune checkpoint molecule CD244, LAG3, CTLA4, and the checkpoint ligand CD48, while pDCs expressed these genes at low frequencies. Flow cytometric analysis of hepatic DC subsets in an E. multilocularis infection mouse model demonstrated that the number of cDCs significantly increased after parasite infection, and a tolerogenic phenotype characterized by a decrease in CD40 and CD80 expression levels was observed at an early stage, whereas an activated phenotype characterized by an increase in CD86 expression levels was observed at a late stage. Moreover, the expression profiles of major immune checkpoint molecules (CD244 and LAG3) and ligands (CD48) on hepatic DC subsets in a mouse model exhibited the same pattern as those in AE patients. Notably, the cDC and pDC subsets in the E. multilocularis infection group exhibited higher expression levels of PD-L1 and CD155 than those in the control group, suggesting the potential of these subsets to impair T cell function. These findings may provide valuable information for investigating the role of hepatic DC subsets in the AE microenvironment and guiding DC targeting treatments for AE.
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Yinshi Li
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Qian Yu
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Mingkun Wang
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Abidan Ainiwaer
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Na Tang
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Xuran Zheng
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Adilai Duolikun
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Bingqing Deng
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Jing Li
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
| | - Yujuan Shen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention), World Health Organization Collaborating Centre for Tropical Disease, Shanghai 200025, China
| | - Chuanshan Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
- Basic Medical College, Xinjiang Medical University, Urumqi 830011, China
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Primary Infection by E. multilocularis Induces Distinct Patterns of Cross Talk between Hepatic Natural Killer T Cells and Regulatory T Cells in Mice. Infect Immun 2022; 90:e0017422. [PMID: 35862712 PMCID: PMC9387288 DOI: 10.1128/iai.00174-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The larval stage of the helminthic cestode Echinococcus multilocularis can inflict tumor-like hepatic lesions that cause the parasitic disease alveolar echinococcosis in humans, with high mortality in untreated patients. Opportunistic properties of the disease have been established based on the increased incidence in immunocompromised patients and mouse models, indicating that an appropriate adaptive immune response is required for the control of the disease. However, cellular interactions and the kinetics of the local hepatic immune responses during the different stages of infection with E. multilocularis remain unknown. In a mouse model of oral infection that mimics the normal infection route in human patients, the networks of the hepatic immune response were assessed using single-cell RNA sequencing (scRNA-seq) of isolated hepatic CD3+ T cells at different infection stages. We observed an early and sustained significant increase in natural killer T (NKT) cells and regulatory T cells (Tregs). Early tumor necrosis factor (TNF)- and integrin-dependent interactions between these two cell types promote the formation of hepatic lesions. At late time points, downregulation of programmed cell death protein 1 (PD-1) and ectonucleoside triphosphate diphosphohydrolase 1 (ENTPD1)-dependent signaling suppress the resolution of parasite-induced pathology. The obtained data provide fresh insight into the adaptive immune responses and local regulatory pathways at different infection stages of E. multilocularis in mice.
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Liu C, Fan H, Guan L, Ma L, Ge RL. Evaluation of Allicin Against Alveolar Echinococcosis In Vitro and in a Mouse Model. Acta Parasitol 2022; 67:79-93. [PMID: 34143400 PMCID: PMC8938363 DOI: 10.1007/s11686-021-00434-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 06/03/2021] [Indexed: 01/10/2023]
Abstract
Purpose At present, the chemotherapy for alveolar echinococcosis (AE) is mainly based on albendazole (ABZ). However, more than 20% of patients fail chemotherapy. Therefore, new and more effective treatments are urgently needed. Allicin has been reported to have antibacterial and antiparasitic effects. The objectives of the present study were to investigate the in vivo and in vitro efficacy of allicin against Echinococcus multilocularis (E. multilocularis). Methods The effects of allicin on protoscolex survival and structural changes were evaluated in vitro. The 4-week-old BALB/c male mice used for in vivo modelling underwent inoculation of E. multilocularis protoscoleces by intraperitoneal injection, followed by intragastric administration of allicin for 6 weeks. Then, the effects of allicin on lymphocyte subsets, metacestode growth and host tissue matrix metalloproteinase 2 (MMP2)/MMP9 expression around metacestodes in mice were evaluated. The toxicity of allicin was further evaluated in vivo and in vitro. Results Att 40 μg/mL, allicin showed a killing effect on protoscoleces in vitro and treatment resulted in the destruction of protoscolex structure. Molecular docking showed that allicin could form hydrogen bonds with E. multilocularis cysteine enzymes. After 6 weeks of in vivo allicin treatment, the spleen index of mice was increased and the weight of metacestodes was reduced. Allicin increased the proportion of CD4+ T cells and decreased the proportion of CD8+ T cells in the peripheral blood and spleen. Pathological analysis of the metacestodes showed structural disruption of the germinal and laminated layers after allicin treatment. In addition, allicin inhibited the expression of MMP2 and MMP9 in metacestode-surrounding host tissues. At 160 μg/mL, allicin had no significant toxicity to normal hepatocytes but could inhibit hepatoma cell proliferation. At 30 mg/kg, allicin had no significant hepatorenal toxicity in vivo. Conclusion These results suggest that allicin exerts anti-E. multilocularis effects in vitro and in vivo and can enhance immune function in mice, with the potential to be developed as a lead compound against echinococcosis.
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Affiliation(s)
- Chuanchuan Liu
- Research Center for High Altitude Medicine, Qinghai University, Xining, 810001, China
- Key Laboratory for Echinococcosis, Qinghai University Affiliated Hospital, Xining, 810001, China
- Hepatobiliary and Pancreatic Surgery Department, Qinghai University Affiliated Hospital, Xining, 810001, China
| | - Haining Fan
- Key Laboratory for Echinococcosis, Qinghai University Affiliated Hospital, Xining, 810001, China
- Hepatobiliary and Pancreatic Surgery Department, Qinghai University Affiliated Hospital, Xining, 810001, China
| | - Lu Guan
- Research Center for High Altitude Medicine, Qinghai University, Xining, 810001, China
- Hepatobiliary and Pancreatic Surgery Department, Qinghai University Affiliated Hospital, Xining, 810001, China
| | - Lan Ma
- Research Center for High Altitude Medicine, Qinghai University, Xining, 810001, China.
- Key Laboratory for Echinococcosis, Qinghai University Affiliated Hospital, Xining, 810001, China.
| | - Ri-Li Ge
- Research Center for High Altitude Medicine, Qinghai University, Xining, 810001, China.
- Key Laboratory for Echinococcosis, Qinghai University Affiliated Hospital, Xining, 810001, China.
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5
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Eroglu F, Dokur M, Ulu Y. MicroRNA profile in immune response of alveolar and cystic echinococcosis patients. Parasite Immunol 2021; 43:e12817. [PMID: 33410199 DOI: 10.1111/pim.12817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 12/18/2020] [Accepted: 12/23/2020] [Indexed: 11/27/2022]
Abstract
It is known that miRNAs are effective in immune response in the diagnosis and treatment of many infectious diseases. However, the miRNAs profile is unknown in Alveolar and Cystic Echinococcosis which can be fatal if left untreated. The miRNAs profile that activates the T and B cells forming the immune system in Alveolar and Cystic Echinococcosis patients was investigated in this study. A total of 50 liver tissue samples were obtained from Alveolar and Cystic Echinococcosis patients in Kilis State Hospital Pathology Laboratory in southeast of Turkey. The circulating cell-free miRNAs were evaluated by a quantitative real-time polymerase chain reaction, statistically calculated within ΔΔCt values and fold changes were evaluated by Welch T test, in which P < .05 was considered to be significant. Twenty-five microRNAs, including let-7a-5p, let-7c, let-7e-5p, miR-15b-5p, miR16, miR-17-5p, miR-23a-5p, miR-24-3p, miR-25-3p, miR-26a-3p, miR-26b-3p, miR-29b-3p, miR-29c-3p, miR-30a-5p, miR-30b-5p, miR-30c-5p, miR-30d-5p, miR-30e-5p, miR-98-5p, miR-101-3p, miR-106b-5p, miR-125b-5p, miR-142-5p, miR-222-3p and miR-223-3p, were found as down-regulated in Alveolar and Cystic Echinococcosis patients than control groups. Twelve miRNAs, including miR-15a-5p, miR-21-5p, miR-27a-3p, miR-29a-3p, miR-146a-5p, miR-181a-5p, miR-181b-5p, miR-181d, miR-181c-5p, miR-195-5p, miR-214-3p and miR-365-3p, were found as up-regulated in Alveolar and Cystic Echinococcosis patients than healthy person. It has been shown that T- and B-cell activities are related in the progressive of both Alveolar and Cystic Echinococcosis in this study. The miRNA panel activated by T and B cells may be important for exploring the mechanisms underlying early development in Alveolar and Cystic Echinococcosis providing novel information that may be used to discover new therapeutics for these diseases.
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Affiliation(s)
- Fadime Eroglu
- Faculty of Medicine, Department of Parasitology, Aksaray University, Aksaray, Turkey.,FaBiyosit Microbiology-Biotechnology R&D Co., Adana, Turkey
| | - Mehmet Dokur
- Faculty of Medicine, Department of Emergency Medicine, Biruni University, Istanbul, Turkey
| | - Yüksel Ulu
- Department of Medical Pathology, Kilis State Hospital, Kilis, Turkey.,Department of Medical Pathology, Istanbul Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
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Zhang C, Lin R, Li Z, Yang S, Bi X, Wang H, Aini A, Zhang N, Abulizi A, Sun C, Li L, Zhao Z, Qin R, Li X, Li L, Aji T, Shao Y, Vuitton DA, Tian Z, Wen H. Immune Exhaustion of T Cells in Alveolar Echinococcosis Patients and Its Reversal by Blocking Checkpoint Receptor TIGIT in a Murine Model. Hepatology 2020; 71:1297-1315. [PMID: 31410870 DOI: 10.1002/hep.30896] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 08/07/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS The cestode Echinococcus multilocularis infection, a serious health problem worldwide, causes alveolar echinococcosis (AE), a tumor-like disease predominantly located in the liver and able to spread to any organs. Until now, there have been few studies that explore how T-cell exhaustion contributes to the parasite's escape from immune attack and how it might be reversed. APPROACH AND RESULTS In this study, we found that liver T-cell immunoreceptor with immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domain (TIGIT) expression was significantly enhanced and positively correlated with lesion activity in AE patients. High TIGIT expression in both liver-infiltrating and blood T cells was associated with their functional exhaustion, and its ligand CD155 was highly expressed by hepatocytes surrounding the infiltrating lymphocytes. In co-culture experiments using human blood T cells and hepatic cell line HL-7702, CD155 induced functional impairment of TIGIT+ T cells, and in vitro blockade with TIGIT antibody restored the function of AE patients' T cells. Similar TIGIT-related functional exhaustion of hepatic T cells and an abundant CD155 expression on hepatocytes were observed in E. multilocularis-infected mice. Importantly, in vivo blocking TIGIT prevented T-cell exhaustion and inhibited disease progression in E. multilocularis-infected mice. Mechanistically, CD4+ T cells were totally and CD8+ T cells partially required for anti-TIGIT-induced regression of parasite growth in mice. CONCLUSIONS This study demonstrates that E. multilocularis can induce T-cell exhaustion through inhibitory receptor TIGIT, and that blocking this checkpoint may reverse the functional impairment of T cells and represent a possible approach to immunotherapy against AE.
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Affiliation(s)
- Chuanshan Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Renyong Lin
- Xinjiang Key Laboratory of Echinococcosis, Clinical Medicine Institute, WHO Collaborating Centre on Prevention and Case Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Zhide Li
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Shuting Yang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiaojuan Bi
- Xinjiang Key Laboratory of Echinococcosis, Clinical Medicine Institute, WHO Collaborating Centre on Prevention and Case Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hui Wang
- Xinjiang Key Laboratory of Echinococcosis, Clinical Medicine Institute, WHO Collaborating Centre on Prevention and Case Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Abudusalamu Aini
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ning Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Abuduaini Abulizi
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Cheng Sun
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Diseases, University of Science and Technology of China, Hefei, China
| | - Liang Li
- Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, China
| | - Zhibin Zhao
- Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, China
| | - Rongde Qin
- Department of Nuclear Medicine, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiaohong Li
- Department of Nuclear Medicine, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Liang Li
- Xinjiang Key Laboratory of Echinococcosis, Clinical Medicine Institute, WHO Collaborating Centre on Prevention and Case Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Tuerganaili Aji
- Department of Hepatic Hydatid and Hepatobiliary Surgery, Digestive and Vascular Surgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yingmei Shao
- Department of Hepatic Hydatid and Hepatobiliary Surgery, Digestive and Vascular Surgery Centre, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Dominique A Vuitton
- WHO-Collaborating Centre for the Prevention and Treatment of Human Echinococcosis, Department of Parasitology, University Hospital, University Bourgogne Franche-Comté, Besançon, France
| | - Zhigang Tian
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Diseases, University of Science and Technology of China, Hefei, China
| | - Hao Wen
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, Clinical Medicine Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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7
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Wang J, Gottstein B. Immunoregulation in larval Echinococcus multilocularis infection. Parasite Immunol 2016; 38:182-92. [PMID: 26536823 DOI: 10.1111/pim.12292] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 10/26/2015] [Indexed: 12/24/2022]
Abstract
Alveolar echinococcosis (AE) is a clinically very severe zoonotic helminthic disease, characterized by a chronic progressive hepatic damage caused by the continuous proliferation of the larval stage (metacestode) of Echinococcus multilocularis. The proliferative potential of the parasite metacestode tissue is dependent on the nature/function of the periparasitic immune-mediated processes of the host. Immune tolerance and/or down-regulation of immunity are a marked characteristic increasingly observed when disease develops towards its chronic (late) stage of infection. In this context, explorative studies have clearly shown that T regulatory (Treg) cells play an important role in modulating and orchestrating inflammatory/immune reactions in AE, yielding a largely Th2-biased response, and finally allowing thus long-term parasite survival, proliferation and maturation. AE is fatal if not treated appropriately, but the current benzimidazole chemotherapy is far from optimal, and novel options for control are needed. Future research should focus on the elucidation of the crucial immunological events that lead to anergy in AE, and focus on providing a scientific basis for the development of novel and more effective immunotherapeutical options to support cure AE by abrogating anergy, anticipating also that a combination of immuno- and chemotherapy could provide a synergistic therapeutical effect.
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Affiliation(s)
- J Wang
- Institute of Parasitology, University of Bern, Bern, Switzerland
| | - B Gottstein
- Institute of Parasitology, University of Bern, Bern, Switzerland
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Fozza C, Barraqueddu F, Corda G, Contini S, Virdis P, Dore F, Bonfigli S, Longinotti M. Study of the T-cell receptor repertoire by CDR3 spectratyping. J Immunol Methods 2016; 440:1-11. [PMID: 27823906 DOI: 10.1016/j.jim.2016.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 09/26/2016] [Accepted: 11/02/2016] [Indexed: 11/28/2022]
Abstract
The T-cell receptor (TCR) is the key player within the so called immunological synapse and the analysis of its repertoire offers a picture of both versatility and wideness of the whole immune T-cell compartment. Among the different approaches applied to its study the so-called spectratyping identifies the pattern of the third complementarity determining region (CDR3) length distribution in each one of the beta variable (TRBV) subfamilies encoded by the corresponding genes. This technique consists in a CDR3 fragment analysis through capillary electrophoresis, performed after cell separation, RNA extraction and reverse transcriptase PCR. This review will run through the most relevant studies which have tried to dissect the TCR repertoire usage in patients with different immune-mediated and infective diseases as well as solid or haematologic malignancies.
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Affiliation(s)
- Claudio Fozza
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy.
| | - Francesca Barraqueddu
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Giovanna Corda
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Salvatore Contini
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Patrizia Virdis
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Fausto Dore
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Silvana Bonfigli
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Maurizio Longinotti
- Hematology, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
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Parallel T-cell cloning and deep sequencing of human MAIT cells reveal stable oligoclonal TCRβ repertoire. Nat Commun 2014; 5:3866. [PMID: 24832684 DOI: 10.1038/ncomms4866] [Citation(s) in RCA: 238] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 04/10/2014] [Indexed: 02/06/2023] Open
Abstract
Mucosal-associated invariant T (MAIT) cells are abundant in humans and recognize conserved bacterial antigens derived from riboflavin precursors, presented by the non-polymorphic MHC class I-like molecule MR1. Here we show that human MAIT cells are remarkably oligoclonal in both the blood and liver, display high inter-individual homology and exhibit a restricted length CDR3β domain of the TCRVβ chain. We extend this analysis to a second sub-population of MAIT cells expressing a semi-invariant TCR conserved between individuals. Similar to 'conventional' MAIT cells, these lymphocytes react to riboflavin-synthesizing microbes in an MR1-restricted manner and infiltrate solid tissues. Both MAIT cell types release Th0, Th1 and Th2 cytokines, and sCD40L in response to bacterial infection, show cytotoxic capacity against infected cells and promote killing of intracellular bacteria, thus suggesting important protective and immunoregulatory functions of these lymphocytes.
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Wang J, Lin R, Zhang W, Li L, Gottstein B, Blagosklonov O, Lü G, Zhang C, Lu X, Vuitton DA, Wen H. Transcriptional profiles of cytokine/chemokine factors of immune cell-homing to the parasitic lesions: a comprehensive one-year course study in the liver of E. multilocularis-infected mice. PLoS One 2014; 9:e91638. [PMID: 24637903 PMCID: PMC3956718 DOI: 10.1371/journal.pone.0091638] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 02/12/2014] [Indexed: 11/19/2022] Open
Abstract
Pathogenesis of chronically developing alveolar echinococcosis (AE) is characterized by a continuous, granulomatous, periparasitic infiltration of immune cells surrounding the metacestode of Echinococcus multilocularis (E.multilocularis) in the affected liver. A detailed cytokine and chemokine profile analysis of the periparasitic infiltrate in the liver has, however, not yet been carried out in a comprehensive way all along the whole course of infection in E. multilocularis intermediate hosts. We thus assessed the hepatic gene expression profiles of 18 selected cytokine and chemokine genes using qRT-PCR in the periparasitic immune reaction and the subsequent adjacent, not directly affected, liver tissue of mice from day 2 to day 360 post intra-hepatic injection of metacestode. DNA microarray analysis was also used to get a more complete picture of the transcriptional changes occurring in the liver surrounding the parasitic lesions. Profiles of mRNA expression levels in the hepatic parasitic lesions showed that a mixed Th1/Th2 immune response, characterized by the concomitant presence of IL-12α, IFN-γ and IL-4, was established very early in the development of E. multilocularis. Subsequently, the profile extended to a combined tolerogenic profile associating IL-5, IL-10 and TGF-β. IL-17 was permanently expressed in the liver, mostly in the periparasitic infiltrate; this was confirmed by the increased mRNA expression of both IL-17A and IL-17F from a very early stage, with a subsequent decrease of IL-17A after this first initial rise. All measured chemokines were significantly expressed at a given stage of infection; their expression paralleled that of the corresponding Th1, Th2 or Th17 cytokines. In addition to giving a comprehensive insight in the time course of cytokines and chemokines in E. multilocularis lesion, this study contributes to identify new targets for possible immune therapy to minimize E. multilocularis-related pathology and to complement the only parasitostatic effect of benzimidazoles in AE.
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Affiliation(s)
- Junhua Wang
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Department of Nuclear Medicine, University of Franche-Comté and Jean Minjoz University Hospital, Besançon, Franche-Comté, France
- Institute of Parasitology, University of Bern, Bern, Switzerland
| | - Renyong Lin
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Wenbao Zhang
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Liang Li
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Bruno Gottstein
- Institute of Parasitology, University of Bern, Bern, Switzerland
| | | | - Guodong Lü
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Chuangshan Zhang
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Xiaomei Lu
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Dominique A. Vuitton
- WHO-Collaborating Centre for the Prevention and Treatment of Human Echinococcosis, University of Franche-Comté and University Hospital, Besançon, Franche-Comté, France
- * E-mail: (HW); (DV)
| | - Hao Wen
- State Key Lab Incubation Base for Xinjiang Major Diseases Research and Xinjiang Key Laboratory of Echinococcosis, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- * E-mail: (HW); (DV)
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Cytokine Pattern of T Lymphocytes in Acute Schistosomiasis mansoni Patients following Treated Praziquantel Therapy. J Parasitol Res 2013; 2013:909134. [PMID: 23401741 PMCID: PMC3563181 DOI: 10.1155/2013/909134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/24/2012] [Accepted: 09/26/2012] [Indexed: 11/26/2022] Open
Abstract
Acute schistosomiasis is associated with a primary exposure and is more commonly seen in nonimmune individuals traveling through endemic regions. In this study, we have focused on the cytokine profile of T lymphocytes evaluated in circulating leukocytes of acute Schistosomiasis mansoni-infected patients (ACT group) before and after praziquantel treatment (ACT-TR group). Our data demonstrated increased values of total leukocytes, eosinophils, and monocytes in both groups. Interestingly, we have observed that patients treated with praziquantel showed increased values of lymphocytes as compared with noninfected group (NI) or ACT groups. Furthermore, a decrease of neutrophils in ACT-TR was observed when compared to ACT group. Analyses of short-term in vitro whole blood stimulation demonstrated that, regardless of the presence of soluble Schistosoma mansoni eggs antigen (SEA), increased synthesis of IFN-γ and IL-4 by T-cells was observed in the ACT group. Analyses of cytokine profile in CD8 T cells demonstrated higher percentage of IFN-γ and IL-4 cells in both ACT and ACT-TR groups apart from increased percentage of IL-10 cells only in the ACT group. This study is the first one to point out the relevance of CD8 T lymphocytes in the immune response induced during the acute phase of schistosomiasis.
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12
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Early peritoneal immune response during Echinococcus granulosus establishment displays a biphasic behavior. PLoS Negl Trop Dis 2011; 5:e1293. [PMID: 21912714 PMCID: PMC3166041 DOI: 10.1371/journal.pntd.0001293] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Accepted: 07/14/2011] [Indexed: 12/31/2022] Open
Abstract
Background Cystic echinococcosis is a worldwide distributed helminth zoonosis caused by the larval stage of Echinococcus granulosus. Human secondary cystic echinococcosis is caused by dissemination of protoscoleces after accidental rupture of fertile cysts and is due to protoscoleces ability to develop into new metacestodes. In the experimental model of secondary cystic echinococcosis mice react against protoscoleces producing inefficient immune responses, allowing parasites to develop into cysts. Although the chronic phase of infection has been analyzed in depth, early immune responses at the site of infection establishment, e.g., peritoneal cavity, have not been well studied. Because during early stages of infection parasites are thought to be more susceptible to immune attack, this work focused on the study of cellular and molecular events triggered early in the peritoneal cavity of infected mice. Principal Findings Data obtained showed disparate behaviors among subpopulations within the peritoneal lymphoid compartment. Regarding B cells, there is an active molecular process of plasma cell differentiation accompanied by significant local production of specific IgM and IgG2b antibodies. In addition, peritoneal NK cells showed a rapid increase with a significant percentage of activated cells. Peritoneal T cells showed a substantial increase, with predominance in CD4+ T lymphocytes. There was also a local increase in Treg cells. Finally, cytokine response showed local biphasic kinetics: an early predominant induction of Th1-type cytokines (IFN-γ, IL-2 and IL-15), followed by a shift toward a Th2-type profile (IL-4, IL-5, IL-6, IL-10 and IL-13). Conclusions Results reported here open new ways to investigate the involvement of immune effectors players in E. granulosus establishment, and also in the sequential promotion of Th1- toward Th2-type responses in experimental secondary cystic echinococcosis. These data would be relevant for designing rational therapies based on stimulation of effective responses and blockade of evasion mechanisms. Cystic echinococcosis is a zoonotic disease caused by the larval stage of the cestode Echinococcus granulosus and shows a cosmopolitan distribution with a worldwide prevalence of roughly 6 million infected people. Human cystic echinococcosis can develop in two types of infection. Primary infection occurs by ingestion of oncospheres, while secondary infection is caused by dissemination of protoscoleces after accidental rupture of fertile cysts. Murine experimental secondary infection in Balb/c mice is the current model to study E. granulosus-host interaction. Secondary infection can be divided into two stages: an early stage in which protoscoleces develop into hydatid cysts (infection establishment) and a later stage in which already differentiated cysts grow and eventually become fertile cysts (chronic infection). During infection establishment parasites are more susceptible to immune attack, thus our study focused on the immunological phenomena triggered early in the peritoneal cavity of experimentally infected mice. Our results suggest that early and local Th2-type responses are permissive for infection establishment.
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13
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Díaz A, Casaravilla C, Allen JE, Sim RB, Ferreira AM. Understanding the laminated layer of larval Echinococcus II: immunology. Trends Parasitol 2011; 27:264-73. [PMID: 21376669 DOI: 10.1016/j.pt.2011.01.008] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 01/27/2011] [Accepted: 01/31/2011] [Indexed: 01/05/2023]
Abstract
The laminated layer (LL) is the massive carbohydrate-rich structure that protects Echinococcus larvae, which cause cystic echinococcosis (hydatid disease) and alveolar echinococcosis. Increased understanding of the biochemistry of the LL is allowing a more informed analysis of its immunology. The LL not only protects the parasite against host attack but also shapes the overall immune response against it. Because of its dense glycosylation, it probably contains few T-cell epitopes, being important instead in T-cell independent antibody responses. Crucially, it is decoded in non-inflammatory fashion by innate immunity, surely contributing to the strong immune-regulation observed in Echinococcus infections. Defining the active LL molecular motifs and corresponding host innate receptors is a feasible and promising goal in the field of helminth-derived immune-regulatory molecules.
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Affiliation(s)
- Alvaro Díaz
- Cátedra de Inmunología. Departamento de Biociencias, Facultad de Química/IQB, Facultad de Ciencias. Universidad de la República, Montevideo CP 11600, Uruguay.
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14
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Zhang W, Ross AG, McManus DP. Mechanisms of Immunity in Hydatid Disease: Implications for Vaccine Development. THE JOURNAL OF IMMUNOLOGY 2008; 181:6679-85. [DOI: 10.4049/jimmunol.181.10.6679] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Teixeira-Carvalho A, Martins-Filho OA, Peruhype-Magalhães V, Silveira-Lemos D, Malaquias LCC, Oliveira LFA, Silveira AMS, Gazzinelli A, Gazzinelli G, Corrêa-Oliveira R. Cytokines, chemokine receptors, CD4+CD25HIGH+ T-cells and clinical forms of human schistosomiasis. Acta Trop 2008; 108:139-49. [PMID: 18534548 DOI: 10.1016/j.actatropica.2008.04.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 12/07/2007] [Accepted: 04/10/2008] [Indexed: 01/21/2023]
Abstract
Previous studies have demonstrated that distinct immune response profiles can be correlated with the development/maintenance of different clinical forms of human schistosomiasis. We have previously shown that individuals with the more severe clinical forms of the disease such as those presenting different levels of fibrosis or with the hepatosplenic (HS) clinical form of the disease show significantly different immune response when compared with those with the intestinal clinical form (INT). To better understand the immune mechanisms associated with the clinical form of the schistosomiasis, in this study, we present the results of the evaluation, at a single cell level, of the cytokine patterns as well as the chemokine receptors expression by T-cell subsets after in vitro short-term stimulation with soluble egg antigens as well as the ex vivo frequency analysis of putative regulatory CD4+CD25HIGH+ T-cell subset in the peripheral blood mononuclear cells. We observed an increase on IL-4+, IL-5+ and IL-10+ cells both in the CD4+ and CD8+ lymphocytes in INT and a significant decrease on the number of IL-4+, IL-5+ and IL-10+ T-lymphocytes for HS. However, patients with detectable fibrosis presented decrease on IL-10+ (both CD4+ and CD8+ lymphocytes) and basal levels of IL-4 and IL-5. These data suggested that although INT group is under the influence of an effective immunoregulated immune response, mainly due to the high percentage of IL-10+ cells, it presents a mixed type (Type1/Type-2) immune profile. Moreover, the chemokine receptors expression demonstrated that CXCR3 and CXCR4 by CD4+ T-cells in INT may dictate the selective profile of IL-10 associated with the immunomodulatory events in human schistosomiasis. Additionally, the ex vivo analysis also suggests that higher levels of CD4+CD25HIGH+ T-cells may play a role in controlling morbidity in chronic human schistosomiasis. Taken together, these data suggest a major role of IL-10-producing CXCR4+ CD4+ T-cell subset for the asymptomatic outcome of the disease.
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Affiliation(s)
- Andréa Teixeira-Carvalho
- Laboratório de Imunologia Celular e Molecular, Centro de Pesquisas René Rachou, FIOCRUZ, Belo Horizonte, MG, Brazil.
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16
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Dvoroznáková E, Porubcová J, Snábel V, Fedorocko P. Imunomodulative effect of liposomized muramyltripeptide phosphatidylethanolamine (L-MTP-PE) on mice with alveolar echinococcosis and treated with albendazole. Parasitol Res 2008; 103:919-29. [PMID: 18587669 DOI: 10.1007/s00436-008-1077-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Accepted: 06/02/2008] [Indexed: 10/21/2022]
Abstract
The effect of liposomized muramyltripeptide phosphatidylethanolamine (L-MTP-PE) administered separately or with anthelmintic albendazole (ABZ) on cellular immunity of mice with alveolar echinococcosis was studied. The proliferative activity of splenic T and B lymphocytes was the most stimulated after combined L-MTP-PE + ABZ therapy [from weeks 8 to 14 post-infection (p.i.)] that also induced a long-term development of protective Th1 response (the highest serum concentration of IFN-gamma from weeks 8 to 18 p.i.). On the contrary, Th2 response (cytokine IL-5) in infected mice treated with L-MTP-PE was inhibited since week 8 p.i., but a significant long-term decrease in IL-5 concentration was found after combined L-MTP-PE+ABZ therapy until the end of the experiment (until week 26 p.i.). L-MTP-PE stimulated the production of superoxide anion (O2-) by peritoneal macrophages from weeks 8 to 12 p.i., but the highest O2- production was accordingly recorded after therapy L-MTP-PE+ABZ from weeks 8 to 18 p.i. Stimulation of cellular immunity of mice with alveolar echinococcis with L-MTP-PE and an interaction with ABZ's anti-parasitic effect resulted in the greatest and long-term reduction of growth of Echinococcus multilocularis cysts in the host from week 10 p.i. until the end of the experiment.
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Affiliation(s)
- Emília Dvoroznáková
- Parasitological Institute of the Slovak Academy of Sciences, Hlinkova 3, 040 01 Kosice, Slovak Republic.
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Hemphill A, Spicher M, Stadelmann B, Mueller J, Naguleswaran A, Gottstein B, Walker M. Innovative chemotherapeutical treatment options for alveolar and cystic echinococcosis. Parasitology 2007; 134:1657-70. [PMID: 17631693 DOI: 10.1017/s0031182007003198] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Echinococcus granulosus and Echinococcus multilocularis are cestode parasites, of which the metacestode (larval) stages cause the diseases cystic echinococcosis (CE) and alveolar echinococcosis (AE), respectively. Albendazole and mebendazole are presently used for chemotherapeutical treatment. However, these benzimidazoles do not appear to be parasiticidal in vivo against AE. In addition, failures in drug treatments as well as the occurrence of side-effects have been reported. New drugs are needed to cure AE and CE, which are considered to be neglected diseases. Strategies currently being implemented to identify novel chemotherapeutical treatment options include (i) conventional primary in vitro testing of broad-spectrum anti-infective drugs, either in parallel with, or followed by, animal experimentation; (ii) studies of drugs which interfere with the proliferation of cancer cells and of Echinococcus metacestodes; (iii) exploitation of the similarities between the parasite and mammalian signalling machineries, with a special focus on targeting specific signalling receptors; (iv) in silico approaches, employing the current Echinococcus genomic database information to search for suitable targets for compounds with known modes of action. In the present article, we review the efforts toward obtaining better anti-parasitic compounds which have been undertaken to improve chemotherapeutical treatment of echinococcosis, and summarize the achievements in the field of host-parasite interactions which may also lead to new immuno-therapeutical options.
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Affiliation(s)
- A Hemphill
- Institute of Parasitology, University of Berne, Länggass-Strasse 122, CH-3012 Berne, Switzerland.
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18
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Poch B, Lotspeich E, Ramadani M, Gansauge S, Beger HG, Gansauge F. Systemic immune dysfunction in pancreatic cancer patients. Langenbecks Arch Surg 2007; 392:353-8. [PMID: 17235586 DOI: 10.1007/s00423-006-0140-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Accepted: 11/27/2006] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND AIMS We investigated the immune status in 32 pancreatic cancer patients (PC) in comparison with healthy controls (HC). MATERIALS AND METHODS Using flow cytometry, peripheral blood lymphocytes (PBL) were characterized by the expression of surface markers for T helper cells (CD4), T suppressor cells (CD8), B cells (CD19) and NK cells (CD56). The blastogenic response of PBL was analyzed after stimulation with concavalin A (ConA), phytohemagglutinin (PHA), pokeweed mitogen (PWM) and anti-CD3 antibodies. The serum levels of TNF-alpha, IL-1beta, IL-2, IL-10, IL-12, IL-18, IL-1RA, sIL-2R and TGF-beta were determined by ELISA. RESULTS No differences in the distribution of peripheral immunocytes in PC were found, whereas the blastogenic response of peripheral blood lymphocytes (PBL) after stimulation with PHA or anti-CD3 antibodies was significantly decreased in PC. In PC, we found reduced serum levels of IL-2 and significantly elevated levels of TNF-alpha, TGF-beta1, IL-10, IL-2R, IL-1beta and IL-1RA. CONCLUSION These data provide evidence for a systemic immune dysfunction in pancreatic cancer patients characterized by a shift towards a T helper cell type 2 cytokine profile, a significant elevation of substances related to T cell suppression and a reduced blastogenic response to PHA and anti-CD3 antibodies of PBL.
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Affiliation(s)
- Bertram Poch
- Center for Oncological, Endocrinological and Minimal-access Surgery, Silcherstr. 36, 89231 Neu-Ulm, Germany
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Abstract
Echinococcosis is a cosmopolitan zoonosis caused by adult or larval stages of cestodes belonging to the genus Echinococcus (family Taeniidae). The two major species of medical and public health importance are Echinococcus granulosus and Echinococcus multilocularis, which cause cystic echinococcosis and alveolar echinococcosis, respectively. Both cystic echinococcosis and alveolar echinococcosis are serious diseases, the latter especially so, with a high fatality rate and poor prognosis if managed inappropriately. This review highlights recent advances in immunity to infection and vaccination against both parasites in their intermediate and definitive hosts and procedures for diagnosis of cystic echinococcosis and alveolar echinococcosis, including the value of immunodiagnostic and DNA approaches. There is discussion also of progress in genomics and related technologies that is providing valuable insights on the functional biology of the Echinococcus organisms. These studies will underpin future research that will reveal a better understanding of the Echinococcus-host interplay, and suggest new avenues for the identification of additional targets for diagnosis, vaccination and chemotherapy.
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Affiliation(s)
- Wenbao Zhang
- Molecular Parasitology Laboratory, Australian Centre for International and Tropical Health and Nutrition, The Queensland Institute of Medical Research, Brisbane, Queensland, Australia
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20
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Vuitton DA, Zhang SL, Yang Y, Godot V, Beurton I, Mantion G, Bresson-Hadni S. Survival strategy of Echinococcus multilocularis in the human host. Parasitol Int 2005; 55 Suppl:S51-5. [PMID: 16360335 DOI: 10.1016/j.parint.2005.11.007] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
As exemplified by "aborted" calcified liver lesions commonly found in patients from endemic areas, Echinococcus multilocularis metacestodes develop only in a minority of individuals exposed to infection with the papasite. Clinical research has disclosed some aspects of the survival strategy of E. multilocularis in human hosts. Clinical observations in liver transplantation and AIDS suggest that suppression of cellular/Th1-related immunity increases disease severity. Most of the studies have stressed a role for CD8+ T cells and for Interleukin-10 in the development of tolerance. A spontaneous secretion of IL-10 by the PBMC seems to be the immunological hallmark of patients with progressive forms of alveolar echinococcosis (AE). IL-10-induced inhibition of effector macrophages, but also of antigen-presenting dendritic cells, may be operating and allowing parasite growth and survival. The genetic correlates of susceptibility to infection with E. multilocularis are clearer in humans than in the mouse model. A significant link between MHC polymorphism and clinical presentation of AE has been shown, and the spontaneous secretion of IL-10 in patients with a progressive AE is higher in patients with the HLA DR3+, DQ2+ haplotype. Clustering of cases in certain families, in communities otherwise exposed to similar risk factors, also points to immuno-genetic predisposition factors that may allow the larva to escape host immunity more easily. The first stage of larval development may be crucial in producing "danger signals" stimulating the initial production of cytokines. Therapeutic use of Interferon alpha is an attempt to foil the survival strategy of E. multilocularis.
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Affiliation(s)
- Dominique Angèle Vuitton
- WHO Collaborating Centre for Prevention and Treatment of Human Echinococcosis, Université de Franche-Comté and University Hospital, Besançon, France.
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Yang W, Agrawal N, Patel J, Edinger A, Osei E, Thut D, Powers J, Meyerson H. Diminished expression of CD19 in B-cell lymphomas. CYTOMETRY PART B-CLINICAL CYTOMETRY 2005; 63:28-35. [PMID: 15624204 DOI: 10.1002/cyto.b.20030] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND CD19 is expressed on most B-cell lymphomas; however, the frequency and types of B-cell lymphomas with low-level expression of CD19 are not well characterized. METHODS We reviewed flow cytometric histograms specifically for decreased CD19 expression on 349 cases analyzed by the Flow Cytometry Laboratory at University Hospitals of Cleveland (Cleveland, Ohio). Results of flow cytometry were correlated with the morphologic diagnosis. RESULTS Of the cases reviewed, 125 (36%) showed a visible decrease in CD19 expression compared with normal B lymphocytes. Decreased CD19 expression was noted in 79% of follicular lymphomas (27 of 34), 36% of small lymphocytic lymphomas/chronic lymphocytic leukemias (82 of 228), 31% of mantle cell lymphomas (4 of 13), 24% of diffuse large B-cell lymphomas (8 of 33), and 13% of marginal zone B-cell lymphomas/lymphoplasmacytoid lymphomas (4 of 30) and was not observed in any Burkitt lymphoma (0 of 5) or hairy cell leukemia (0 of 6). Decreased CD19 expression was significantly more frequent in follicular lymphomas than in other lymphoma subtypes (P < 0.001). No significant difference was observed in the frequency of decreased CD19 expression based on histologic grade of follicular lymphoma. CONCLUSIONS Diminished expression of CD19 expression occurs frequently in B-cell lymphomas, in particular follicular lymphoma, and may be helpful in identifying B-cell lymphoma cells in complex cell mixtures such as bone marrow specimens.
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Affiliation(s)
- Wei Yang
- University Hospitals of Cleveland and Case Western Reserve University, Cleveland, Ohio, USA
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Riganò R, Buttari B, De Falco E, Profumo E, Ortona E, Margutti P, Scottà C, Teggi A, Siracusano A. Echinococcus granulosus-specific T-cell lines derived from patients at various clinical stages of cystic echinococcosis. Parasite Immunol 2004; 26:45-52. [PMID: 15198645 DOI: 10.1111/j.0141-9838.2004.00682.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
To investigate the role of T lymphocytes in the immune response to Echinococcus granulosus, using sheep hydatid fluid (SHF) and antigen B (AgB), we generated T-cell lines from patients with active, transitional and inactive hydatid cysts. We established 16 T-cell lines, eight specific to SHF and eight specific to AgB. At surface phenotyping 88-98% of cells displayed the helper/inducer CD4 antigen. In all patients, at all clinical stages of hydatid cyst disease, T-cell stimulation with SHF and AgB invariably amplified a large number of almost identical Vbeta subfamily fragments. Irrespective of antigen-specificity, the two cell lines from the patient with an inactive cyst had a Th1 profile, because they exclusively expressed and produced IFN-gamma. Conversely, the T-cell lines derived from the seven patients with active and transitional hydatid cysts had mixed Th1/Th2 and Th0 clones. The functional characteristics of the 16 T-cell lines differed markedly in the various clinical stages of cystic echinococcosis, thus providing new in vitro evidence that Th1 lymphocytes contribute decisively to the inactive stage of hydatid disease, Th2 lymphocytes in the active and transitional stages. The parasite-specific T-cell lines, especially the two Th1 lines from the patient with an inactive cyst, may help identify Th1 protective epitopes on SHF and AgB.
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Affiliation(s)
- R Riganò
- Department of Infectious, Parasitic and Immune-mediated Diseases, Istituto Superiore di Sanità, Rome, Italy
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Dai WJ, Waldvogel A, Siles-Lucas M, Gottstein B. Echinococcus multilocularis proliferation in mice and respective parasite 14-3-3 gene expression is mainly controlled by an alphabeta CD4 T-cell-mediated immune response. Immunology 2004; 112:481-8. [PMID: 15196217 PMCID: PMC1782501 DOI: 10.1111/j.1365-2567.2004.01885.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The role of specific B lymphocytes and T-cell populations in the control of experimental Echinococus multilocularis infection was studied in micro MT, nude, T-cell receptor (TCR)-beta(-/-), major histocompatibility complex (MHC)-I(-/-) and MHC-II(-/-) mice. At 2 months postinfection, the parasite mass was more than 10 times higher in nude, TCR-beta(-/-) and MHC-II(-/-) mice than in infected C57BL/6 wild-type (WT) mice, and these T-cell-deficient mice started to die of the high parasite load at this time-point. In contrast, MHC-I(-/-) and micro MT mice exhibited parasite growth rates similar to those found in WT controls. These findings clearly point to the major role that CD4(+) alphabeta(+) T cells play in limiting the E. multilocularis proliferation, while CD8(+) T and B cells appeared to play a minor role in the control of parasite growth. In the absence of T cells, especially CD4(+) or alphabeta(+) T cells, the cellular immune response to infection was impaired, as documented by the lack of hepatic granuloma formation around the parasite and by a decreased splenocyte responsiveness to concanavalin A (Con A) and parasite antigen stimulation. Surprisingly, in T-cell-deficient mice, the ex vivo expression of interferon-gamma (IFN-gamma) and other inflammatory cytokines (except for interleukin-6) were increased in association with a high parasite load. Thus, the relative protection mediated by CD4(+) alphabeta(+) T cells against E. multilocularis infection seemed not be IFN-gamma dependent, but rather to rely on the effector's function of CD4(+) alphabeta(+) T cells. The local restriction of parasite germinal cell proliferation was reflected by a regulatory effect on the expression of 14-3-3 protein within the parasite tissue in T-cell-deficient mice. These results provide a strong indication that the CD4(+) alphabeta(+) T-cell-mediated immune response contributes to the control of the parasite growth and to the regulation of production of the parasite 14-3-3 protein in metacestode tissues.
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Affiliation(s)
- Wen Juan Dai
- Institute of Parasitology, University of Berne, Berne, Switzerland
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Abstract
PURPOSE OF REVIEW Echinococcus multilocularis is a tapeworm of foxes that may cause a zoonotic infection resulting in a highly pathogenic and potentially fatal chronic liver infestation called human alveolar echinococcosis. Radical liver resection currently offers the only potential cure. Although alveolar echinococcosis is a rare parasitic disease that is restricted to transmission in the northern hemisphere, the parasite is geographically widespread being distributed from Alaska, across Canada and north central USA, through northern Europe and Eurasia to Japan. The present review summarizes the background to this helminthic infection and recent contributions in areas of pathology, diagnosis, treatment and transmission. RECENT FINDINGS Concern is growing in Europe that the prevalence and distribution of E. multilocularis in red foxes has increased significantly in the last 10-15 years. A retrospective analysis revealed >550 cases of human alveolar echinococcosis diagnosed between 1982-2000, with the majority in France, Germany and Switzerland. Human prevalence rates >3% occur in central northwest China and the disease is of public health concern in northern Japan. Improvements in immunodiagnosis with native and recombinant antigens have enabled more accurate confirmation of hepatic image findings, while development of in-vitro culture of metacestode tissues provides a useful model for screening new anti-alveolar echinococcosis drugs as alternatives to albendazole and surgery. Recombinant molecules from the oncosphere and metacestode stages have shown potential as vaccine candidates. New tools of coproantigen and copro-DNA detection for vulpine infections have proved highly beneficial in epidemiological and transmission ecology studies, as has a landscape ecology approach to develop risk models for communities in endemic areas. SUMMARY It is possible that human AE will become an emergent zoonosis in some regions of Europe and Eurasia. Improvements in diagnostic and treatment approaches are being investigated. Further understanding of host immune responses will aid in characterization of disease pathology. Control of E. multilocularis in its natural cycles will be difficult due to the involvement of wild animal hosts, however use of anthelminthic baits and dosing of domestic dogs may reduce transmission at local scales.
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Affiliation(s)
- Philip Craig
- Bioscience Research Institute and School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester, M5 4WT, UK.
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Zhang S, Penfornis A, Harraga S, Chabod J, Beurton I, Bresson-Hadni S, Tiberghien P, Kern P, Vuitton DA. Polymorphisms of the TAP1 and TAP2 genes in human alveolar echinococcosis. EUROPEAN JOURNAL OF IMMUNOGENETICS : OFFICIAL JOURNAL OF THE BRITISH SOCIETY FOR HISTOCOMPATIBILITY AND IMMUNOGENETICS 2003; 30:133-9. [PMID: 12648282 DOI: 10.1046/j.1365-2370.2003.00375.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We postulated that TAP genes may influence the susceptibility of some individuals to Echinococcus multilocularis infection. Six coding region variants (codons 333 and 637 in TAP1, and 379, 565, 651 and 665 in TAP2) were typed in 94 patients and 100 controls. Thr/Thr homozygosity at TAP2/665 was more prevalent in patients than in controls [64% vs. 45%, respectively; odds ratio (OR) = 2.1 (95% confidence interval (CI) 1.1; 2.7)] and Thr/Ala heterozygozity was less prevalent (32% vs. 50%, respectively) (P = 0.014). Of the 38 patients with progressive lesions, 76% were Thr/Thr, as compared with 55% of patients without progressive lesions and 45% of controls (P = 0.058 and 0.02, respectively), independent of HLA status. To determine whether this association is functionally relevant, functional analyses and/or confirmation in distinct populations of patients with alveolar echinococcosis would be required.
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Affiliation(s)
- S Zhang
- WHO Collaborating Center for Prevention and Treatment of Human Echinococcosis, Health and Rural Enviroment, University of Franche-Comté EA2276, Besançon, France
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