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Montalvão F, Nascimento DO, Nunes MP, Koeller CM, Morrot A, Lery LMS, Bisch PM, Teixeira SMR, Vasconcellos R, Freire-de-Lima L, Lopes MF, Heise N, DosReis GA, Freire-de-Lima CG. Antibody Repertoires Identify β-Tubulin as a Host Protective Parasite Antigen in Mice Infected With Trypanosoma cruzi. Front Immunol 2018; 9:671. [PMID: 29706955 PMCID: PMC5909033 DOI: 10.3389/fimmu.2018.00671] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/19/2018] [Indexed: 12/17/2022] Open
Abstract
Few studies investigate the major protein antigens targeted by the antibody diversity of infected mice with Trypanosoma cruzi. To detect global IgG antibody specificities, sera from infected mice were immunoblotted against whole T. cruzi extracts. By proteomic analysis, we were able to identify the most immunogenic T. cruzi proteins. We identified three major antigens as pyruvate phosphate dikinase, Hsp-85, and β-tubulin. The major protein band recognized by host IgG was T. cruzi β-tubulin. The T. cruzi β-tubulin gene was cloned, expressed in E. coli, and recombinant T. cruzi β-tubulin was obtained. Infection increased IgG reactivity against recombinant T. cruzi β-tubulin. A single immunization of mice with recombinant T. cruzi β-tubulin increased specific IgG reactivity and induced protection against T. cruzi infection. These results indicate that repertoire analysis is a valid approach to identify antigens for vaccines against Chagas disease.
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Affiliation(s)
- Fabricio Montalvão
- Faculdade de Medicina de Petrópolis (FMP-FASE), Petrópolis, Brazil.,Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Marise P Nunes
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Carolina M Koeller
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Morrot
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.,Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leticia Miranda S Lery
- Laboratório de Microbiologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Paulo M Bisch
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Santuza M R Teixeira
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Rita Vasconcellos
- Instituto de Biologia, Universidade Federal Fluminense, Niterói, Brazil
| | - Leonardo Freire-de-Lima
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcela F Lopes
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Norton Heise
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - George A DosReis
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Taniwaki NN, Machado FS, Massensini AR, Mortara RA. Trypanosoma cruzi disrupts myofibrillar organization and intracellular calcium levels in mouse neonatal cardiomyocytes. Cell Tissue Res 2006; 324:489-96. [PMID: 16501996 DOI: 10.1007/s00441-005-0152-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2005] [Accepted: 12/09/2005] [Indexed: 10/25/2022]
Abstract
Immunofluorescence studies of normal and Trypanosoma cruzi-infected primary cultures of heart muscle cells were performed to gather information about the arrangement of myofibrillar components during the intracellular life cycle of this parasite. By using a panel of monoclonal antibodies against various myofibrillar proteins, a progressive disruption and loss of contractile proteins (such myosin and actin) of the host cell was detected during infection. The host cell formed a loose network of myofibrillar proteins around the parasites. Breakdown of the myofibrils occurred in regions where the parasites were present, and heavily infected cells showed myofibrillar proteins at their periphery. In parallel, we investigated the effect of T. cruzi infection on intracellular calcium levels by using a Ca2+ fluorescent indicator (confocal microscopy). Infected cardiomyocytes displayed a marked impairment in contractility, and calcium influxes became irregular and less intense when compared with those of non-infected cells. Our results demonstrate that T. cruzi infection dramatically affects calcium fluxes and causes myofibrillar breakdown disturbing cardiomyocyte contractility.
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Affiliation(s)
- Noemi N Taniwaki
- Seção de Microscopia Eletrônica do Instituto Adolfo Lutz, Av. Dr. Arnaldo, 355-01246-902, São Paulo, Brazil
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Zhu G, McDougald LR. Confocal Laser Scanning Microscopy of β-Tubulin and α-Actinin in Asexual Stages of Eimeria tenella (Apicomplexa: Eimeriidae) in Cell Culture. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0003-9365(11)80305-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zwirner NW, Malchiodi EL, Chiaramonte MG, Fossati CA. A lytic monoclonal antibody to Trypanosoma cruzi bloodstream trypomastigotes which recognizes an epitope expressed in tissues affected in Chagas' disease. Infect Immun 1994; 62:2483-9. [PMID: 7514576 PMCID: PMC186535 DOI: 10.1128/iai.62.6.2483-2489.1994] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
It has been suggested that molecular mimicry between the antigens of Trypanosoma cruzi and the host could have a role in the onset of the chronic stage of Chagas' disease. In this article, we report on a monoclonal antibody (MAb), CAK20.12 (immunoglobulin G2b), which reacts with a polypeptidic epitope of a 150-kDa antigen expressed on the surface of several strains of T. cruzi. This MAb also causes lysis of bloodstream trypomastigotes. Serum samples from 30 of 30 patients with chronic and 11 of 13 patients with acute Chagas' disease present specific antibodies to this antigen. MAb CAK20.12 reacts, by indirect immunofluorescence, with human and syngeneic murine striated muscle tissue, with the smooth muscle layer of cardiac arteries, with the lamina muscularis mucosae and the external striated muscle layer of the esophagus, and with the smooth muscle cells of the colon from normal syngeneic mice. Reactivity with the small intestine was very weak, and no reactivity with ventricle or atrium tissue was detected. Adsorption with an antigenic fraction from normal murine striated muscle or from T. cruzi epimastigotes confirmed that MAb CAK20.12 recognizes a common epitope present in parasites and host tissues. MAb CAK20.12, lytic for the infective form of T. cruzi, recognizes an epitope expressed in striated and smooth muscle cells of the host tissues affected in the chronic stage of Chagas' disease.
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Affiliation(s)
- N W Zwirner
- Instituto de Estudios de la Inmunidad Humoral, Cátedra de Inmunología, Facultad de Farmacía y Bioquímica, Universidad de Buenos Aires, Argentina
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Halonen SK, Weidner E. Overcoating of Toxoplasma parasitophorous vacuoles with host cell vimentin type intermediate filaments. J Eukaryot Microbiol 1994; 41:65-71. [PMID: 8124268 DOI: 10.1111/j.1550-7408.1994.tb05936.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The interaction between the Toxoplasma parasitophorous vacuole and vimentin-type intermediate filaments in Vero cells was investigated via immunofluorescence microscopy. A significant rearrangement of host cell vimentin around the Toxoplasma parasitophorous vacuoles occurs throughout the course of infection. Host cell vimentin associates with the parasitophorous vacuoles within an hour after invasion. This vimentin overcoating of the vacuole is initiated at the host cell nuclear surface. During parasite multiplication, vimentin retains a closely defined association with the cytosolic surface of the parasitophorous vacuole. In addition, the vimentin intermediate filaments originating from the host cell nuclear surface are progressively rearranged around the enlarging parasitophorous compartment. During infections, the order of vimentin cytoskeleton is normal throughout the cell and appears redefined only at the vicinity of the parasitophorous vacuole. Depolymerization of the intermediate filaments was achieved with the phosphatase inhibitors okadaic acid and calyculin A. Disruption of the intermediate filament networks resulted in displacement of the parasitophorous vacuoles from the host cell nuclear surface. The data indicate that host cell vimentin binds to the Toxoplasma parasitophorous vacuoles and that the host intermediate filament network serves to dock the parasite compartment to the host cell nuclear surface.
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Affiliation(s)
- S K Halonen
- Department of Zoology and Physiology, Louisiana State University, Baton Rouge 70803
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Low HP, Paulin JJ, Keith CH. Trypanosoma cruzi infection of BSC-1 fibroblast cells causes cytoskeletal disruption and changes in intracellular calcium levels. THE JOURNAL OF PROTOZOOLOGY 1992; 39:463-70. [PMID: 1403981 DOI: 10.1111/j.1550-7408.1992.tb04833.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The disruption of vimentin and actin filaments of host BSC-1 fibroblast cells by Trypanosoma cruzi was investigated using a mouse monoclonal anti-vimentin antibody and rhodamine phalloidin, respectively. Indirect immunofluorescence microscopy demonstrated that infection of BSC-1 cells by T. cruzi caused disruption of both cytoskeletal components. The disruption was greater as infection progressed. Mechanisms other than mechanical ones may play a role in the disruption since disrupted cytoskeletal elements were well removed from the parasites. In the determination of intracellular calcium concentrations using Fura-2 AM, infected and uninfected cells both showed an initial increase in intracellular calcium levels. At later times of infection (3 to 5 days), intracellular calcium levels of infected cells were significantly lower than those of control cells. There was no specific localization of intracellular calcium in the infected host cells as determined by image analysis.
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Affiliation(s)
- H P Low
- Department of Zoology, University of Georgia, Athens 30602
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Saborio JL, Wrightsman RA, Kazuko SG, Granger BS, Manning JE. Trypanosoma cruzi: identification of a surface antigen restricted to the flagellar region of the infective form of the parasite. Exp Parasitol 1990; 70:411-8. [PMID: 2182336 DOI: 10.1016/0014-4894(90)90125-v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A hybridoma cell line was derived from spleen cells of B6D2 mice infected with the Peru strain of Trypanosoma cruzi. The monoclonal antibody produced by this hybridoma, designated mAb20H1, reacts exclusively with molecular components of trypomastigotes, the infective form of the parasite. The results of indirect immunofluorescence and of immunoelectron microscopy with gold-tagged antibodies indicate that the 20H1 antigen is restricted to the surface of the part of the flagellum in contact with the cell body and to the surface of the cell body in the immediate vicinity of this organelle. Western blot analysis showed that the 20H1 antigen consists of four to five different molecules with sizes between 34 and 41 kDa, and that these molecules are glycoproteins with affinity for concanavalin A. In other strains of T. cruzi, mAb20H1 reacts with glycoproteins with apparent sizes that range between 37 and 43 kDa in the CL, Esmeraldo and Y strains, and between 41 and 45 kDa in the Silvio strain.
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Affiliation(s)
- J L Saborio
- Department of Molecular Biology and Biochemistry, University of California, Irvine 92717
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Kuwahara T, Paulin JJ, Cosgrove WB, Agosin M. Immunochemical studies on the FAD-dependent NADPH-cytochrome c reductase from Trypanosoma cruzi. Arch Biochem Biophys 1988; 264:214-21. [PMID: 3134855 DOI: 10.1016/0003-9861(88)90587-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The cytosolic flavin enzyme from Trypanosoma cruzi was isolated by a modification of the previously reported method (T. Kuwahara, R. A. White, Jr., and M. Agosin (1985) Arch. Biochem. Biophys. 239, 18-28). In the present study, rabbits were inoculated with the purified enzyme and antibodies were purified from the sera. Ouchterlony double-diffusion analysis indicated that the antibodies reacted specifically with the flavoenzyme and not with other T. cruzi proteins. At the equivalence point, 1 ml of antibody neutralized about 4 nmol of enzyme. The IgG fraction had a small inhibitory effect on the catalytic activity of the enzyme as measured by cytochrome c reduction but only at IgG concentrations well above the equivalence point. Immunotitration of the enzyme in T. cruzi cultures showed that the enzyme corresponds to about 1% of the total protein during the logarithmic phase of growth, but this value decreases to about 0.6% during the stationary phase. Among various trypanosomatids tested, T. cruzi had the highest enzyme concentration; whereas, in other species it ranged from 0.25 to 2.4 micrograms/mg protein. These marked differences suggest that the antibody may be suitable for taxonomic purposes. The presence of the enzyme in amastigotes maintained in tissue culture cells was demonstrated by indirect immunofluorescence. The enzyme was found localized in the periphery of the cell, just beneath the subpellicular microtubules. However, distribution of the enzyme in epimastigotes was more diffuse. As immunofluorescence could be detected only in amastigotes and not in the tissue culture cells, it is suggested that the antibody may be suitable for histopathological diagnosis of Chagas' disease.
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Affiliation(s)
- T Kuwahara
- Department of Zoology, University of Georgia, Athens 30602
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