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Chile N, Bernal-Teran EG, Condori BJ, Clark T, Garcia HH, Gilman RH, Verastegui MR. Characterization of antigenic proteins of the Taenia solium postoncospheral form. Mol Biochem Parasitol 2024; 259:111621. [PMID: 38705360 PMCID: PMC11197303 DOI: 10.1016/j.molbiopara.2024.111621] [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: 10/19/2023] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/07/2024]
Abstract
Neurocysticercosis is the leading cause for acquired epilepsy worldwide, and it is caused by the larval stage of the parasite Taenia solium. Several proteins of this stage have been characterized and studied to understand the parasite-host interaction, however, the proteins from the early cysticercus stages (the postoncospheral form) have not yet been characterized. The study of the postoncospheral form proteins is important to understand the host-parasite relationship in the early stages of infection. The aim of this work was to identify postoncospheral form antigenic proteins using sera from neurocysticercosis patients. T. solium activated oncospheres were cultured in HCT-8 cells to obtain the postoncospheral form. Soluble total and excretory/secretory proteins were obtained from the postoncospheral form and were incubated with both pool sera and individual serum of neurocysticercosis positive human patients. Immunoblotting showed target antigenic proteins with apparent molecular weights of 23 kDa and 46-48 kDa. The 46-48 kDa antigen bands present in soluble total and excretory/secretory postoncospheral form proteins were analyzed by LC-MS/MS; proteins identified were: nuclear elongation factor 1 alpha, enolase, unnamed protein product/antigen diagnostic GP50, calcium binding protein calreticulin precursor and annexin. The postoncospheral form expresses proteins related to interaction with the host, some of these proteins are predicted to be exosomal proteins. In conclusion, postoncospheral proteins are consistent targets of the humoral immune response in human and may serve as targets for diagnosis and vaccines.
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Affiliation(s)
- Nancy Chile
- Laboratorio de Investigación de Enfermedades Infecciosas. Laboratorios de Investigación y Desarrollo, Facultad de Ciencias e Ingeniería, Universidad Peruana Cayetano Heredia, Lima, Perú.
| | - Edson G Bernal-Teran
- Laboratorio de Investigación de Enfermedades Infecciosas. Laboratorios de Investigación y Desarrollo, Facultad de Ciencias e Ingeniería, Universidad Peruana Cayetano Heredia, Lima, Perú
| | - Beth J Condori
- Laboratorio de Investigación de Enfermedades Infecciosas. Laboratorios de Investigación y Desarrollo, Facultad de Ciencias e Ingeniería, Universidad Peruana Cayetano Heredia, Lima, Perú
| | - Taryn Clark
- Department of Emergency Medicine, SUNY Downstate Medical Center/Kings County Hospital Medical Center, Brooklyn, NY, USA; Department of International Health, Bloomberg School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Hector H Garcia
- Instituto Nacional de Ciencias Neurológicas. Unidad de Cisticercosis. Lima, Perú
| | - Robert H Gilman
- Department of International Health, Bloomberg School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Manuela R Verastegui
- Laboratorio de Investigación de Enfermedades Infecciosas. Laboratorios de Investigación y Desarrollo, Facultad de Ciencias e Ingeniería, Universidad Peruana Cayetano Heredia, Lima, Perú
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Chen Y, Hua R, Shao G, Zhu X, Hou W, Li S, Yang A, Yang G. Effects of annexin B18 from Echinococcus granulosus sensu lato on mouse macrophages. Exp Parasitol 2024; 260:108723. [PMID: 38432406 DOI: 10.1016/j.exppara.2024.108723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/01/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
Cystic echinococcosis (CE) is a zoonotic disease, caused by Echinococcus granulosus sensu lato (E. granulosus s. l.), which posed significant public health concern globally. E. granulosus s. l. annexin B18 (EgANXB18) acts as a secretory protein, exerting a crucial influence in mediating host-parasite interactions. Recombinant annexin B18 (rEgANXB18) was expressed by Escherichia coli and the immunoreactivity was assessed by western blotting. The binding affinity between rEgANXB18 and total protein of RAW264.7 cells was assessed by ELISA. The impact of rEgANXB18 on the metabolic activity of RAW264.7 cells was assayed by Cell Counting Kit-8 assay. The mRNA levels of polarization markers (inducible nitrous oxide synthase (iNOS) and arginase 1 (Arg1)) and key cellular factors (IL-1β,IL-6,IL-10 and TNFα) were evaluated by qRT-PCR. rEgANXB18 was successfully expressed and recognized by E. granulosus s.l. infected canine sera, as well as could bind to the total protein of RAW264.7 cells. Additionally, rEgANXB18 could promote metabolic activity at 5, 10, 20, and 40 μg/mL while no significant impact on metabolic activity was observed at 80 μg/mL. Co-culture RAW264.7 cells with rEgANXB18 resulted in significantly upregulation of the transcript levels of polarization markers iNOS and Arg1. Moreover, rEgANXB18 significantly upregulated the transcript levels of IL-1β, IL-6, TNFα, and IL-10, while dose-effect relationship was observed in IL-1β, IL-6, and IL-10. Our results indicated that EgANXB18 showed the potential to regulate immune response of macrophages by shifting the cell polarization and cytokine profile, thereby promoting the parasitism of CE.
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Affiliation(s)
- Yanxin Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan Province, PR China
| | - Ruiqi Hua
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan Province, PR China
| | - Guoqing Shao
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan Province, PR China
| | - Xiaowei Zhu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan Province, PR China
| | - Wei Hou
- Sichuan Center for Animal Disease Prevention and Control, Chengdu, 610000, Sichuan Province, PR China
| | - Shengqiong Li
- Sichuan Center for Animal Disease Prevention and Control, Chengdu, 610000, Sichuan Province, PR China
| | - Aiguo Yang
- Sichuan Center for Animal Disease Prevention and Control, Chengdu, 610000, Sichuan Province, PR China.
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan Province, PR China.
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Rashidi S, Mansouri R, Ali-Hassanzadeh M, Muro A, Nguewa P, Manzano-Román R. The most prominent modulated annexins during parasitic infections. Acta Trop 2023; 243:106942. [PMID: 37172709 DOI: 10.1016/j.actatropica.2023.106942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/05/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
Annexins (ANXs) exert different functions in cell biological and pathological processes and are thus known as double or multi-faceted proteins. These sophisticated proteins might express on both parasite structure and secretion and in parasite-infected host cells. In addition to the characterization of these pivotal proteins, describing their mechanism of action can be also fruitful in recognizing their roles in the pathogenesis of parasitic infections. Accordingly, this study presents the most prominent ANXs thus far identified and their relevant functions in parasites and infected host cells during pathogenesis, especially in the most important intracellular protozoan parasitic infections including leishmaniasis, toxoplasmosis, malaria and trypanosomiasis. The data provided in this study demonstrate that the helminth parasites most probably express and secret ANXs to develop pathogenesis while the modulation of the host-ANXs could be employed as a crucial strategy by intracellular protozoan parasites. Moreover, such data highlight that the use of analogs of both parasite and host ANX peptides (which mimic or regulate ANXs physiological functions through various strategies) might suggest novel therapeutic insights into the treatment of parasitic infections. Furthermore, due to the prominent immunoregulatory activities of ANXs during most parasitic infections and the expression levels of these proteins in some parasitic infected tissues, such multifunctional proteins might be also potentially relevant as vaccine and diagnostic biomarkers. We also suggest some prospects and insights that could be useful and applicable to form the basis of future experimental studies.
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Affiliation(s)
- Sajad Rashidi
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran; Department of Medical Laboratory Sciences, Khomein University of Medical Sciences, Khomein, Iran
| | - Reza Mansouri
- Department of Immunology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Mohammad Ali-Hassanzadeh
- Department of Immunology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Antonio Muro
- Infectious and Tropical Diseases Group (e-INTRO), Institute of Biomedical Research of Salamanca-Research Center for Tropical Diseases at the University of Salamanca (IBSAL-CIETUS), Faculty of Pharmacy, University of Salamanca, 37008 Salamanca, Spain
| | - Paul Nguewa
- University of Navarra, ISTUN Institute of Tropical Health, Department of Microbiology and Parasitology. IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea 1, 31008 Pamplona, Spain.
| | - Raúl Manzano-Román
- Infectious and Tropical Diseases Group (e-INTRO), Institute of Biomedical Research of Salamanca-Research Center for Tropical Diseases at the University of Salamanca (IBSAL-CIETUS), Faculty of Pharmacy, University of Salamanca, 37008 Salamanca, Spain.
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Annexin in Taenia crassiceps ORF Strain is Localized in the Osmoregulatory System. Acta Parasitol 2022; 67:827-834. [PMID: 35113341 DOI: 10.1007/s11686-022-00526-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/18/2022] [Indexed: 11/01/2022]
Abstract
PURPOSE Annexins are proteins with important roles in parasites, some of which are related to excretion-secretion processes, protein traffic, and microvesicle functionality. The participation of annexins in osmoregulation has been reported in tapeworms, including Taenia solium. This study aimed to investigate the localization and expression of annexin in cysticerci of Taenia crassiceps, used as a model of cysticercosis. METHODS We used an antibody made with a protein, previously employed on Schistosoma bovis, to detect annexin in T. crassiceps proteins extracts used Western blot assay. The histological distribution of annexin was studied with immunofluorescence and confocal microscopy. RESULTS The antibody against annexin recognized a band at a molecular weight of 40.9 kDa. The histological distribution of annexin showed that the protein is mainly localized in the tegument and the protonephridia ducts. CONCLUSION In our study, annexin was detected at a molecular weight similar to that described for Schistosoma bovis. In addition, its principal localization entailed structures of the osmoregulatory system one of the most important by the survival of the parasites. This confirms and solidifies previous reports concerning the role of annexins in T. crassiceps and this will be interesting by the development of new compounds against this protein.
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Hamamoto Filho PT, Fragoso G, Sciutto E, Fleury A. Inflammation in neurocysticercosis: clinical relevance and impact on treatment decisions. Expert Rev Anti Infect Ther 2021; 19:1503-1518. [PMID: 33794119 DOI: 10.1080/14787210.2021.1912592] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Neurocysticercosis is caused by the localization of Taenia solium larvae in the central nervous system. The disease remains endemic in most countries of Latin America, Asia and Africa. While major improvements have been made in its diagnosis and treatment, uncertainties persist regarding the clinical implications and treatment of the inflammatory reaction associated with the disease. AREAS COVERED In this review, based on PubMed searches, the authors describe the characteristics of the immune-inflammatory response in patients with neurocysticercosis, its clinical implications and the treatment currently administered. The dual role of inflammation (participating in both, the death of the parasite, and the precipitation of serious complications) is discussed. New therapeutic strategies of potential interest are presented. EXPERT OPINION Inflammatory reaction is the main pathogenic mechanism associated to neurocysticercosis. Its management is mainly based on corticosteroids administration. This strategy had improved prognostic of patients as it allows for the control of most of the inflammatory complications. On the other side, it might be involved in the persistence of parasites in some patients, despite cysticidal treatment, due to its immunosuppressive properties. New strategies are needed to improve therapeutical management, particularly in the severest presentations.
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Affiliation(s)
- Pedro T Hamamoto Filho
- Department of Neurology, Psychology and Psychiatry, UNESP-Univ Estadual Paulista, Botucatu Medical School, Botucatu, Brazil
| | - Gladis Fragoso
- Department of Immunology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Edda Sciutto
- Department of Immunology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Agnès Fleury
- Department of Genomic Medicine and Environmental Toxicology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.,Neurocysticercosis Clinic, Instituto Nacional de Neurología Y Neurocirugía, Ciudad de México, Mexico, mexico.,Neuroinflammation Unit, Instituto de Investigaciones Biomédicas-Universidad Nacional Autónoma de México/INNN/Facultad de Medicina-UNAM, Ciudad de México, Mexico
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Song H, He X, Du X, Hua R, Xu J, He R, Xie Y, Gu X, Peng X, Yang G. Molecular characterization and expression analysis of annexin B3 and B38 as secretory proteins in Echinococcus granulosus. Parasit Vectors 2021; 14:103. [PMID: 33557917 PMCID: PMC7869467 DOI: 10.1186/s13071-021-04596-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/13/2021] [Indexed: 11/18/2022] Open
Abstract
Background Cystic echinococcosis is a parasitic zoonotic disease, which poses a threat to public health and animal husbandry, and causes significant economic losses. Annexins are a family of phospholipid-binding proteins with calcium ion-binding activity, which have many functions. Methods Two annexin protein family genes [Echinococcus granulosus annexin B3 (EgAnxB3) and EgAnxB38] were cloned and molecularly characterized using bioinformatic analysis. The immunoreactivity of recombinant EgAnxB3 (rEgAnxB3) and rEgAnxB38 was investigated using western blotting. The distribution of EgAnxB3 and EgAnxB38 in protoscoleces (PSCs), the germinal layer, 18-day strobilated worms and 45-day adult worms was analyzed by immunofluorescence localization, and their secretory characteristics were analyzed preliminarily; in addition, quantitative real-time reverse transcription polymerase chain reaction was used to analyze their transcript levels in PSCs and 28-day strobilated worms stages. The phospholipid-binding activities of rEgAnxB3 and rEgAnxB38 were also analyzed. Results EgAnxB3 and EgAnxB38 are conserved and contain calcium-binding sites. Both rEgAnxB3 and rEgAnxB38 could be specifically recognized by the serum samples from E. granulosus-infected sheep, indicating that they had strong immunoreactivity. EgAnxB3 and EgAnxB38 were distributed in all stages of E. granulosus, and their transcript levels were high in the 28-day strobilated worms. They were found in liver tissues near the cysts. In addition, rEgAnxB3 has Ca2+-dependent phospholipid-binding properties. Conclusions EgAnxB3 and EgAnxB38 contain calcium-binding sites, and rEgAnxB3 has Ca2+-dependent phospholipid-binding properties. EgAnxB3 and EgAnxB38 were transcribed in PSCs and 28-day strobilated worms. They were expressed in all stages of E. granulosus, and distributed in the liver tissues near the hydatid cyst, indicating that they are secreted proteins that play a crucial role in the development of E. granulosus. ![]()
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Affiliation(s)
- Hongyu Song
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Xue He
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Xiaodi Du
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Ruiqi Hua
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Jing Xu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Ran He
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Yue Xie
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Xiaobin Gu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Xuerong Peng
- Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, 611130, China.
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Liu Y, Yang Y, Xu J, Dong X, Gu X, Xie Y, Lai W, Jing B, Peng X, Yang G. Expression and serodiagnostic potential of antigen B and thioredoxin peroxidase from Taenia multiceps. Vet Parasitol 2019; 272:58-63. [PMID: 31395206 DOI: 10.1016/j.vetpar.2019.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 10/26/2022]
Abstract
Coenurosis is a serious parasitic disease of herbivorous animals caused by the metacestode of Taenia multiceps (Coenurus cerebralis). Accordingly, a significant amount of research is currently dedicated to the development of appropriate antigens for use in rapid and accurate coenurosis diagnosis kits. In the present study, antigen B (AgB) and thioredoxin peroxidase (TPx) from T. multiceps were cloned and expressed using a prokaryotic system, molecular characterization of Tm-AgB was determined by bioinformatical analyses. The serological diagnostic potentials of rTm-AgB and rTm-TPx were evaluated by indirect ELISA and compared with those of previously reported rTm-AnxB2, rTm-HSP70, and rTm-GST. The results showed that Tm-AgB is a specific lipoprotein of cestodes with good thermal stability. The ELISA assay showed that rTm-AgB exhibited a sensitivity of 95.8% and a specificity of 87.5%, indicating its strong potential for serological diagnosis of T. multiceps.
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Affiliation(s)
- Yuchen Liu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Yingdong Yang
- Panzhihua Academy of Agricultural and Forestry Sciences, Panzhihua 617000, China.
| | - Jing Xu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Xiaowei Dong
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Xiaobin Gu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Yue Xie
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Weimin Lai
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Bo Jing
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Xuerong Peng
- Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, China.
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Biological role of excretory-secretory proteins in endemic parasites of Latin America and the Caribbean. J Helminthol 2019; 94:e53. [PMID: 31092301 DOI: 10.1017/s0022149x19000312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Neglected tropical diseases (NTDs) share certain traits: they are parasitic infections, prevailing in tropical environments and affecting marginalized sectors of the population. Six NTDs - ascariasis, cysticercosis, echinococcosis, hookworm infection, onchocerciasis and trichuriasis - all of them endemic in Latin America and the Caribbean (LAC), are analysed in this work. This review aims to discuss key information on the function of excretory/secretory (E/S) proteins from these parasites in their infectivity, pathogeny and diagnosis. The modulation of the host immune system to favour the permanence and survival of the parasite is also discussed. An updated knowledge on the function of E/S molecules in endemic parasitoses in LAC may lead to new approaches for the clinical management and diagnosis of these diseases. In turn, this could allow us to optimize their treatment and make it more affordable - a relevant goal given the economic constraints that the region is facing.
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Molecular Characterization of Annexin B2, B3 and B12 in Taenia multiceps. Genes (Basel) 2018; 9:genes9110559. [PMID: 30463204 PMCID: PMC6267623 DOI: 10.3390/genes9110559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/08/2018] [Accepted: 11/12/2018] [Indexed: 12/27/2022] Open
Abstract
Coenurus cerebralis, the metacestode of Taenia multiceps, causes coenurosis, a disease severely affecting goat, sheep, cattle and yak farming and resulting in huge economic losses annually. Annexins bind calcium ions and play an important role in flatworm parasite development. To explore potential functions of annexins in T. multiceps, three homologous genes, namely, TmAnxB2, TmAnxB3 and TmAnxB12, were screened from the transcriptome dataset, amplified from C. cerebralis cDNA and subjected to bioinformatics analysis. Then, polyclonal antibodies recognizing the recombinant TmAnxB2 (rTmAnxB2) and rTmAnxB3 were prepared for localization of TmAnxB2 and TmAnxB3 in different tissues and developmental stages by immunofluorescence. The transcription of all three genes was also measured by relative fluorescent quantitative PCR. The sizes of rTmAnxB2, rTmAnxB3 and rTmAnxB12 were 58.00, 53.06 and 53.51 kDa, respectively, and rTmAnxB12 was unstable. Both rTmAnxB2 and rTmAnxB3 were recognized by goat-positive T. multiceps sera in Western blots. Immunofluorescence revealed that TmAnxB2 and TmAnxB3 were localized in the protoscolex and cyst wall and TmAnxB3 was also detected in adult cortex. TmAnxB2 and TmAnxB12 mRNA levels were determined to be highest in oncospheres and protoscolex, whereas transcription of TmAnxB3 was highest in scolex and immature segments. Taken together, these findings indicate that TmAnxB2 and TmAnxB12 may play critical roles in T. multiceps larvae, while TmAnxB3 may have important functions in adults. These results will lay the foundation for functional research of annexins in T. multiceps.
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da Silva MB, Urrego A JR, Oviedo Y, Cooper PJ, Pacheco LGC, Pinheiro CS, Ferreira F, Briza P, Alcantara-Neves NM. The somatic proteins of Toxocara canis larvae and excretory-secretory products revealed by proteomics. Vet Parasitol 2018; 259:25-34. [PMID: 30056980 DOI: 10.1016/j.vetpar.2018.06.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/02/2018] [Accepted: 06/23/2018] [Indexed: 12/31/2022]
Abstract
Toxocariasis is a widespread helminth infection of dogs and cats, caused by Toxocara canis and Toxocara cati larvae, respectively. Toxocara spp. can cause zoonotic infections in humans by invading tissues and organs causing pathology. Toxocara spp. larvae release excretory-secretory molecules (TES) into the body of their host that are fundamental to the host-parasite interaction and could be used as targets for novel diagnostics and vaccines. In the present study, we identified 646 T. canis proteins from TES and larval extract using 1D-SDS PAGE followed by mass spectrometry. A wide range of proteins was identified that may play a role both in the induction of the host immune response and host pathology, and in parasite metabolism and survival. Among these proteins there are potential candidates for novel diagnostics and vaccines for dogs and cats toxocariases.
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Affiliation(s)
- Márcia B da Silva
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil.
| | - Juan R Urrego A
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil; Department of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia.
| | - Yisela Oviedo
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil.
| | - Philip J Cooper
- Facultad de Ciencias Médicas, de la Salud y la Vida, Universidad Internacional del Ecuador, Quito, Ecuador; Insitute of Infection and Immunity, St George's University of London, London, United Kingdom.
| | - Luis G C Pacheco
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil.
| | - Carina S Pinheiro
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil.
| | - Fátima Ferreira
- Department of Biosciences, University of Salzburg, Salzburg, Austria.
| | - Peter Briza
- Department of Biosciences, University of Salzburg, Salzburg, Austria.
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Song X, Hu D, Zhong X, Wang N, Gu X, Wang T, Peng X, Yang G. Characterization of a Secretory Annexin in Echinococcus granulosus. Am J Trop Med Hyg 2016; 94:626-33. [PMID: 26787154 DOI: 10.4269/ajtmh.15-0452] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 12/01/2015] [Indexed: 01/22/2023] Open
Abstract
Cystic echinococcosis, caused by Echinococcus granulosus, is a widespread parasitic zoonosis causing economic loss and public health problems. Annexins are important proteins usually present in the plasma membrane, but previous studies have shown that an annexin B33 protein of E. granulosus (Eg-ANX) could be detected in the excretory/secretory products and cyst fluid. In this study, we cloned and characterized Eg-ANX. In silico analysis showed that the amino acid sequence of Eg-ANX was conserved and lacked any signal peptides. The phospholipid-binding activity of recombinant Eg-ANX (rEg-ANX) was tested; liposomes could bind to rEg-ANX only in the presence of Ca(2+). In addition, we performed western blotting and immunohistochemical analyses to further validate the secretory properties of Eg-ANX. The protein could be detected in the cyst fluid of E. granulosus and was also present in the intermediate host tissues, which suggested that Eg-ANX might play an important role in parasite-host interaction.
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Affiliation(s)
- Xingju Song
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Dandan Hu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Xiuqin Zhong
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Ning Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Xiaobin Gu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Tao Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Xuerong Peng
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
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12
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Gomez S, Adalid-Peralta L, Palafox-Fonseca H, Cantu-Robles VA, Soberón X, Sciutto E, Fragoso G, Bobes RJ, Laclette JP, Yauner LDP, Ochoa-Leyva A. Genome analysis of Excretory/Secretory proteins in Taenia solium reveals their Abundance of Antigenic Regions (AAR). Sci Rep 2015; 5:9683. [PMID: 25989346 PMCID: PMC4437048 DOI: 10.1038/srep09683] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 03/16/2015] [Indexed: 11/09/2022] Open
Abstract
Excretory/Secretory (ES) proteins play an important role in the host-parasite interactions. Experimental identification of ES proteins is time-consuming and expensive. Alternative bioinformatics approaches are cost-effective and can be used to prioritize the experimental analysis of therapeutic targets for parasitic diseases. Here we predicted and functionally annotated the ES proteins in T. solium genome using an integration of bioinformatics tools. Additionally, we developed a novel measurement to evaluate the potential antigenicity of T. solium secretome using sequence length and number of antigenic regions of ES proteins. This measurement was formalized as the Abundance of Antigenic Regions (AAR) value. AAR value for secretome showed a similar value to that obtained for a set of experimentally determined antigenic proteins and was different to the calculated value for the non-ES proteins of T. solium genome. Furthermore, we calculated the AAR values for known helminth secretomes and they were similar to that obtained for T. solium. The results reveal the utility of AAR value as a novel genomic measurement to evaluate the potential antigenicity of secretomes. This comprehensive analysis of T. solium secretome provides functional information for future experimental studies, including the identification of novel ES proteins of therapeutic, diagnosis and immunological interest.
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Affiliation(s)
- Sandra Gomez
- Instituto Nacional de Neurología y Neurocirugía, México, D.F., C.P. 14269, México
| | - Laura Adalid-Peralta
- 1] Instituto Nacional de Neurología y Neurocirugía, México, D.F., C.P. 14269, México [2] Unidad Periférica del Instituto de Investigaciones Biomédicas en el Instituto Nacional de Neurología y Neurocirugía, México, D.F., C.P. 14269, México
| | | | - Vito Adrian Cantu-Robles
- Instituto Nacional de Medicina Genómica, Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan, México, D.F. C.P. 14610, México
| | - Xavier Soberón
- 1] Instituto Nacional de Medicina Genómica, Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan, México, D.F. C.P. 14610, México [2] Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Cuernavaca, Morelos, C.P. 62210, México
| | - Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, D.F., C.P. 04510, México
| | - Gladis Fragoso
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, D.F., C.P. 04510, México
| | - Raúl J Bobes
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, D.F., C.P. 04510, México
| | - Juan P Laclette
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, D.F., C.P. 04510, México
| | - Luis del Pozo Yauner
- Instituto Nacional de Medicina Genómica, Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan, México, D.F. C.P. 14610, México
| | - Adrián Ochoa-Leyva
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química, UNAM-Instituto Nacional de Medicina Genómica (INMEGEN), Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan México, D.F. C.P. 14610, México
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13
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Leow CY, Willis C, Hofmann A, Jones MK. Structure-function analysis of apical membrane-associated molecules of the tegument of schistosome parasites of humans: prospects for identification of novel targets for parasite control. Br J Pharmacol 2015; 172:1653-63. [PMID: 25176442 PMCID: PMC4376446 DOI: 10.1111/bph.12898] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 06/12/2014] [Accepted: 08/26/2014] [Indexed: 02/02/2023] Open
Abstract
Neglected tropical diseases are a group of some 17 diseases that afflict poor and predominantly rural people in developing nations. One significant disease that contributes to substantial morbidity in endemic areas is schistosomiasis, caused by infection with one of five species of blood fluke belonging to the trematode genus Schistosoma. Although there is one drug available for treatment of affected individuals in clinics, or for mass administration in endemic regions, there is a need for new therapies. A prominent target organ of schistosomes, either for drug or vaccine development, is the peculiar epithelial syncytium that forms the body wall (tegument) of this parasite. This dynamic layer is maintained and organized by concerted activity of a range of proteins, among which are the abundant tegumentary annexins. In this review, we will outline advances in structure-function analyses of these annexins, as a means to understanding tegument cell biology in host-parasite interaction and their potential exploitation as targets for anti-schistosomiasis therapies.
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Affiliation(s)
- Chiuan Yee Leow
- School of Veterinary Science, The University of QueenslandGatton, Queensland, Australia
- Infectious Diseases, QIMR Berghofer Medical Research InstituteHerston, Queensland, Australia
- Institute for Research in Molecular Medicine, Universiti Sains MalaysiaPenang, Malaysia
| | - Charlene Willis
- Infectious Diseases, QIMR Berghofer Medical Research InstituteHerston, Queensland, Australia
- Structural Chemistry Program, Eskitis Institute, Griffith UniversityBrisbane, Queensland, Australia
| | - Andreas Hofmann
- Structural Chemistry Program, Eskitis Institute, Griffith UniversityBrisbane, Queensland, Australia
- Faculty of Veterinary Science, The University of MelbourneParkville, Victoria, Australia
| | - Malcolm K Jones
- School of Veterinary Science, The University of QueenslandGatton, Queensland, Australia
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14
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Reynoso-Ducoing O, Valverde-Islas L, Paredes-Salomon C, Pérez-Reyes A, Landa A, Robert L, Mendoza G, Ambrosio JR. Analysis of the expression of cytoskeletal proteins of Taenia crassiceps ORF strain cysticerci (Cestoda). Parasitol Res 2014; 113:1955-69. [DOI: 10.1007/s00436-014-3846-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 02/27/2014] [Indexed: 12/01/2022]
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15
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Bae YA, Xue Y, Lee EG, Kim SH, Kong Y. Bioactive molecules ofTaenia soliummetacestode, a causative agent of neurocysticercosis. Expert Rev Proteomics 2014; 7:691-707. [DOI: 10.1586/epr.10.72] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Yang D, Chen L, Wu X, Zhou X, Li M, Chen Z, Nong X, Gu X, Peng X, Yang G. Expression of the Tpanxb1 gene from Taenia pisiformis and its potential diagnostic value by dot-ELISA. J Parasitol 2013; 100:246-50. [PMID: 24325657 DOI: 10.1645/13-304.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Cysticercosis, caused by the larvae of Taenia pisiformis, is a common disease in rabbits that results in economic losses. To date, there has been limited information available on the early detection of infection by this parasite. This study describes a dot-ELISA method based on an autologous antigen annexin B1 (Tpanxb1). Its potential for serodiagnosis of rabbit cysticercosis was also evaluated. Western blot analysis revealed that the recombinant Tpanxb1 (rTpanxb1) protein could be specifically recognized by rabbit anti-sera. In serum trials, the antibodies could be detected by dot-ELISA using rTpanxb1 at 14 days post-infection. The positive response was present for up to 49 days post-infection. Based on the necropsy results of 169 rabbit samples, the relative sensitivity and specificity of the dot-ELISA were 94.55% and 92.86%, respectively. This study provides a foundation for studying the immunological function of annexin and its application to control Taenia cestodes.
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Affiliation(s)
- Deying Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, Sichuan Province, China
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17
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Diaz-Masmela Y, Fragoso G, Ambrosio JR, Mendoza-Hernández G, Rosas G, Estrada K, Carrero JC, Sciutto E, Laclette JP, Bobes RJ. Immunodiagnosis of porcine cysticercosis: identification of candidate antigens through immunoproteomics. Vet J 2013; 198:656-60. [PMID: 24161749 DOI: 10.1016/j.tvjl.2013.09.056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 09/19/2013] [Accepted: 09/20/2013] [Indexed: 01/12/2023]
Abstract
Cysticercosis, caused by the larval stage of Taenia solium, is a zoonotic disease affecting pigs and humans that is endemic to developing countries in Latin America, Africa and South East Asia. The prevalence of infection in pigs, the intermediate host for T. solium, has been used as an indicator for monitoring disease transmission in endemic areas. However, accurate and specific diagnostic tools for porcine cysticercosis remain to be established. Using proteomic approaches and the T. solium genome sequence, seven antigens were identified as specific for porcine cysticercosis, namely, tropomyosin 2, alpha-1 tubulin, beta-tubulin 2, annexin B1, small heat-shock protein, 14-3-3 protein, and cAMP-dependent protein kinase. None of these proteins were cross-reactive when tested with sera from pigs infected with Ascaris spp., Cysticercus tenuicollis and hydatid cysts of Echinococcus spp. or with serum from a Taenia saginata-infected cow. Comparison with orthologues, indicated that the amino acid sequences of annexin B1 and cAMP-dependent protein kinase possessed highly specific regions, which might make them suitable candidates for development of a specific diagnostic assay for porcine cysticercosis.
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Affiliation(s)
- Yuliet Diaz-Masmela
- Immunology Department, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, DF 04510, Mexico
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18
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Zheng Y. Strategies of Echinococcus species responses to immune attacks: implications for therapeutic tool development. Int Immunopharmacol 2013; 17:495-501. [PMID: 23973651 DOI: 10.1016/j.intimp.2013.07.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/26/2013] [Accepted: 07/30/2013] [Indexed: 01/27/2023]
Abstract
Echinococcus species have been studied as a model to investigate parasite-host interactions. Echinococcus spp. can actively communicate dynamically with a host to facilitate infection, growth and proliferation partially via secretion of molecules, especially in terms of harmonization of host immune attacks. This review systematically outlines our current knowledge of how the Echinococcus species have evolved to adapt to their host's microenvironment. This understanding of parasite-host interplay has implications in profound appreciation of parasite plasticity and is informative in designing novel and effective tools including vaccines and drugs for the treatment of echinococcosis and other diseases.
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Affiliation(s)
- Yadong Zheng
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou, Gansu, China; Key Lab of New Animal Drug Project, Gansu Province, Lanzhou Institute of Husbandry, Pharmaceutical Sciences, CAAS, Lanzhou, Gansu, China; Key Lab of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou Institute of Husbandry, Pharmaceutical Sciences, CAAS, Lanzhou, Gansu, China.
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19
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Victor B, Kanobana K, Gabriël S, Polman K, Deckers N, Dorny P, Deelder AM, Palmblad M. Proteomic analysis of Taenia solium metacestode excretion-secretion proteins. Proteomics 2012; 12:1860-9. [PMID: 22623400 DOI: 10.1002/pmic.201100496] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The metacestode larval stage of Taenia solium is the causal agent of a zoonotic disease called cysticercosis. The disease has an important impact on pork trade (due to porcine cysticercosis) and public health (due to human neurocysticercosis). In order to improve the current diagnostic tools and to get a better understanding of the interaction between T. solium metacestodes and their host, there is a need for more information about the proteins that are released by the parasite. In this study, we used protein sequences from different helminths, 1DE, reversed-phase LC, and MS/MS to analyze the excretion-secretion proteins produced by T. solium metacestodes from infected pigs. This is the first report of the T. solium metacestode excretion-secretion proteome. We report 76 proteins including 27 already described T. solium proteins, 17 host proteins and 32 proteins likely to be of T. solium origin, but identified using sequences from other helminths.
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Affiliation(s)
- Bjorn Victor
- Veterinary Helminthology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
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20
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de la Torre-Escudero E, Manzano-Román R, Siles-Lucas M, Pérez-Sánchez R, Moyano JC, Barrera I, Oleaga A. Molecular and functional characterization of a Schistosoma bovis annexin: fibrinolytic and anticoagulant activity. Vet Parasitol 2011; 184:25-36. [PMID: 21889851 DOI: 10.1016/j.vetpar.2011.08.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/26/2011] [Accepted: 08/08/2011] [Indexed: 02/04/2023]
Abstract
Annexins belong to an evolutionarily conserved multigene family of proteins expressed throughout the animal and plant kingdoms. Although they are soluble cytosolic proteins that lack signal sequences, they have also been detected in extracellular fluids and have been associated with cell surface membranes, where they could be involved in anti-haemostatic and anti-inflammatory functions. Schistosome annexins have been identified on the parasite's tegument surface and excretory/secretory products, but their functions are still unknown. Here we report the cloning, sequencing, in silico analysis, and functional characterization of a Schistosoma bovis annexin. The predicted protein has typical annexin secondary and tertiary structures. Bioassays with the recombinant protein revealed that the protein is biologically active in vitro, showing fibrinolytic and anticoagulant properties. Finally, the expression of the native protein on the tegument surface of S. bovis schistosomula and adult worms is demonstrated, revealing the possibility of exposure to the host's immune system and thus offering a potential vaccine target for the control of schistosomiasis in ruminants.
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Affiliation(s)
- Eduardo de la Torre-Escudero
- Parasitology Laboratory, Instituto de Recursos Naturales y Agrobiología de Salamanca, Cordel de Merinas, 40-52, 37008 Salamanca, Spain
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21
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Hofmann A, Osman A, Leow CY, Driguez P, McManus DP, Jones MK. Parasite annexins--new molecules with potential for drug and vaccine development. Bioessays 2011; 32:967-76. [PMID: 21105292 DOI: 10.1002/bies.200900195] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In the last few years, annexins have been discovered in several nematodes and other parasites, and distinct differences between the parasite annexins and those of the hosts make them potentially attractive targets for anti-parasite therapeutics. Annexins are ubiquitous proteins found in almost all organisms across all kingdoms.Here, we present an overview of novel annexins from parasitic organisms, and summarize their phylogenetic and biochemical properties, with a view to using them as drug or vaccine targets. Building on structural and biological information that has been accumulated for mammalian and plant annexins, we describe a predicted additional secondary structure element found in many parasite annexins that may confer unique functional properties, and present a specific antigenic epitope for use as a vaccine.
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Affiliation(s)
- Andreas Hofmann
- Structural Chemistry Program, Eskitis Institute for Cell and Molecular Therapies, Griffith University, Nathan, Queensland, Australia.
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22
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Robinson MW, Hutchinson AT, Donnelly S, Dalton JP. Worm secretory molecules are causing alarm. Trends Parasitol 2010; 26:371-2. [PMID: 20542734 DOI: 10.1016/j.pt.2010.05.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 05/14/2010] [Accepted: 05/17/2010] [Indexed: 11/17/2022]
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23
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Calcium-dependent proapoptotic effect of Taenia solium metacestodes annexin B1 on human eosinophils: A novel strategy to prevent host immune response. Int J Biochem Cell Biol 2008; 40:2151-63. [DOI: 10.1016/j.biocel.2008.02.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2007] [Revised: 01/30/2008] [Accepted: 02/18/2008] [Indexed: 01/22/2023]
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24
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Translocation of annexin B1 in response to the stimulation of PMA and ionomycin in cervical cancer cells. Cell Biol Int 2007; 32:121-7. [PMID: 17936648 DOI: 10.1016/j.cellbi.2007.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2007] [Revised: 06/28/2007] [Accepted: 08/27/2007] [Indexed: 11/21/2022]
Abstract
Annexin B1 is a novel member of the annexin superfamily which was isolated from a Cysticercus cellulosae cDNA library. To investigate the physiological roles of annexin B1, we firstly performed immunohistochemical analysis on frozen Cysticercus cellulosae sections and found that annexin B1 was present not only in the tegument of the bladder wall, but also in the host-derived inflammatory layer; In addition, ELISA analysis revealed that annexin B1 could be detected in the cystic fluid of Cysticercus cellulosae and the sera of pigs with cysticercosis. These findings indicated that annexin B1 might be a secretary protein. We further constructed a pEGFP-annexin B1 plasmid and transfected it into SiHa cells. We found that GFP-annexin B1 was stimulated to translocate to the plasma membrane by phorbol 12-myristate 13-acetate (PMA). By contrast, it was induced to distribute at the plasma and nuclear membranes by treatment with calcium ionophore ionomycin. PMA increased annexin B1 membrane binding, which might facilitate exocytosis. Moreover, translocation of the protein to the plasma and nuclear membranes after stimulated by ionomycin, was predicted to be related to an additional function.
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