1
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de Souza WM, Fumagalli MJ, de Lima STS, Parise PL, Carvalho DCM, Hernandez C, de Jesus R, Delafiori J, Candido DS, Carregari VC, Muraro SP, Souza GF, Simões Mello LM, Claro IM, Díaz Y, Kato RB, Trentin LN, Costa CHS, Maximo ACBM, Cavalcante KF, Fiuza TS, Viana VAF, Melo MEL, Ferraz CPM, Silva DB, Duarte LMF, Barbosa PP, Amorim MR, Judice CC, Toledo-Teixeira DA, Ramundo MS, Aguilar PV, Araújo ELL, Costa FTM, Cerqueira-Silva T, Khouri R, Boaventura VS, Figueiredo LTM, Fang R, Moreno B, López-Vergès S, Mello LP, Skaf MS, Catharino RR, Granja F, Martins-de-Souza D, Plante JA, Plante KS, Sabino EC, Diamond MS, Eugenin E, Proença-Módena JL, Faria NR, Weaver SC. Pathophysiology of chikungunya virus infection associated with fatal outcomes. Cell Host Microbe 2024; 32:606-622.e8. [PMID: 38479396 PMCID: PMC11018361 DOI: 10.1016/j.chom.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 12/08/2023] [Accepted: 02/16/2024] [Indexed: 03/28/2024]
Abstract
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus that causes acute, subacute, and chronic human arthritogenic diseases and, in rare instances, can lead to neurological complications and death. Here, we combined epidemiological, virological, histopathological, cytokine, molecular dynamics, metabolomic, proteomic, and genomic analyses to investigate viral and host factors that contribute to chikungunya-associated (CHIK) death. Our results indicate that CHIK deaths are associated with multi-organ infection, central nervous system damage, and elevated serum levels of pro-inflammatory cytokines and chemokines compared with survivors. The histopathologic, metabolite, and proteomic signatures of CHIK deaths reveal hemodynamic disorders and dysregulated immune responses. The CHIKV East-Central-South-African lineage infecting our study population causes both fatal and survival cases. Additionally, CHIKV infection impairs the integrity of the blood-brain barrier, as evidenced by an increase in permeability and altered tight junction protein expression. Overall, our findings improve the understanding of CHIK pathophysiology and the causes of fatal infections.
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Affiliation(s)
- William M de Souza
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, College of Medicine, Lexington, KY, USA; Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA; World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX, USA; Global Virus Network, Baltimore, MD, USA.
| | - Marcilio J Fumagalli
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Shirlene T S de Lima
- Laboratório Central de Saúde Pública do Ceará, Fortaleza, Ceará, Brazil; Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Pierina L Parise
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil; Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
| | - Deyse C M Carvalho
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA; Laboratory of Immunobiotechnology, Biotechnology Center, Federal University of Paraíba, João Pessoa, Paraíba, Brazil
| | - Cristian Hernandez
- Department of Neurobiology, University of Texas Medical Branch, Galveston, TX, USA
| | - Ronaldo de Jesus
- Coordenação Geral dos Laboratórios de Saúde Pública, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Brazil; Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jeany Delafiori
- Innovare Biomarkers Laboratory, School of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Darlan S Candido
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK; Department of Zoology, University of Oxford, Oxford, UK; Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Victor C Carregari
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Stefanie P Muraro
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Gabriela F Souza
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Ingra M Claro
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK; Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil; Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Yamilka Díaz
- Department of Research in Virology and Biotechnology, Gorgas Memorial Institute of Health Studies, Panama, Panama
| | - Rodrigo B Kato
- Coordenação Geral dos Laboratórios de Saúde Pública, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Brazil; Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lucas N Trentin
- Institute of Chemistry and Center for Computing in Engineering and Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Clauber H S Costa
- Institute of Chemistry and Center for Computing in Engineering and Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | | | | | - Tayna S Fiuza
- Laboratório Central de Saúde Pública do Ceará, Fortaleza, Ceará, Brazil; Programa de Pós Graduação em Bioinformática, Instituto Metrópole Digital, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Vânia A F Viana
- Laboratório Central de Saúde Pública do Ceará, Fortaleza, Ceará, Brazil
| | | | | | - Débora B Silva
- Laboratório Central de Saúde Pública do Ceará, Fortaleza, Ceará, Brazil
| | | | - Priscilla P Barbosa
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Mariene R Amorim
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Carla C Judice
- Laboratory of Tropical Diseases, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Daniel A Toledo-Teixeira
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Mariana S Ramundo
- Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil; Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Patricia V Aguilar
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA; Center for Tropical Diseases, Institute for Human Infection and Immunity, University of Texas Medical Branch, Galveston, TX, USA
| | - Emerson L L Araújo
- Coordenação Geral de Atenção às Doenças Transmissíveis na Atenção Primária, Departamento de Gestão ao cuidado Integral, Secretaria de Atenção Primária à Saúde, Ministério da Saúde, Brasília, Brazil
| | - Fabio T M Costa
- Laboratory of Tropical Diseases, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Thiago Cerqueira-Silva
- Universidade Federal da Bahia, Faculdade de Medicina, Salvador, Bahia, Brazil; Fundação Oswaldo Cruz, Instituto Gonçalo Muniz, Laboratório de Medicina e Saúde Pública de Precisão, Salvador, Bahia, Brazil
| | - Ricardo Khouri
- Universidade Federal da Bahia, Faculdade de Medicina, Salvador, Bahia, Brazil; Fundação Oswaldo Cruz, Instituto Gonçalo Muniz, Laboratório de Medicina e Saúde Pública de Precisão, Salvador, Bahia, Brazil
| | - Viviane S Boaventura
- Universidade Federal da Bahia, Faculdade de Medicina, Salvador, Bahia, Brazil; Fundação Oswaldo Cruz, Instituto Gonçalo Muniz, Laboratório de Medicina e Saúde Pública de Precisão, Salvador, Bahia, Brazil; Hospital Santa Izabel, Santa Casa de Misericórdia da Bahia, Serviço de Otorrinolaringologia, Salvador, Bahia, Brazil
| | - Luiz Tadeu M Figueiredo
- Virology Research Centre, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rong Fang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
| | - Brechla Moreno
- Department of Research in Virology and Biotechnology, Gorgas Memorial Institute of Health Studies, Panama, Panama
| | - Sandra López-Vergès
- Department of Research in Virology and Biotechnology, Gorgas Memorial Institute of Health Studies, Panama, Panama; Sistema Nacional de Investigación from SENACYT, Panama, Panama
| | | | - Munir S Skaf
- Institute of Chemistry and Center for Computing in Engineering and Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Rodrigo R Catharino
- Innovare Biomarkers Laboratory, School of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Fabiana Granja
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil; Biodiversity Research Centre, Federal University of Roraima, Boa Vista, Roraima, Brazil
| | - Daniel Martins-de-Souza
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil; D'Or Institute for Research and Education, São Paulo, São Paulo, Brazil; Experimental Medicine Research Cluster, University of Campinas, Campinas, São Paulo, Brazil
| | - Jessica A Plante
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA; World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX, USA
| | - Kenneth S Plante
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA; World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX, USA
| | - Ester C Sabino
- Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil; Departamento de Moléstias Infecciosas e Parasitárias, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Michael S Diamond
- Departments of Medicine, Molecular Microbiology, Pathology & Immunology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Eliseo Eugenin
- Department of Neurobiology, University of Texas Medical Branch, Galveston, TX, USA
| | - José Luiz Proença-Módena
- Laboratory of Emerging Viruses, Department of Genetics, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Nuno R Faria
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK; Department of Zoology, University of Oxford, Oxford, UK; Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Scott C Weaver
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA; World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX, USA; Global Virus Network, Baltimore, MD, USA; Institute for Human Infection and Immunity, University of Texas Medical Branch, Galveston, TX, USA
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2
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Purificação A, Silva-Mendonça S, Cruz LV, Sacramento CQ, Temerozo JR, Fintelman-Rodrigues N, de Freitas CS, Godoi BF, Vaidergorn MM, Leite JA, Salazar Alvarez LC, Freitas MV, Silvac MFB, Martin BA, Lopez RFV, Neves BJ, Costa FTM, Souza TML, da Silva Emery F, Andrade CH, Nonato MC. Unveiling the Antiviral Capabilities of Targeting Human Dihydroorotate Dehydrogenase against SARS-CoV-2. ACS Omega 2024; 9:11418-11430. [PMID: 38496952 PMCID: PMC10938441 DOI: 10.1021/acsomega.3c07845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 01/18/2024] [Accepted: 02/05/2024] [Indexed: 03/19/2024]
Abstract
The urgent need for effective treatments against emerging viral diseases, driven by drug-resistant strains and new viral variants, remains critical. We focus on inhibiting the human dihydroorotate dehydrogenase (HsDHODH), one of the main enzymes responsible for pyrimidine nucleotide synthesis. This strategy could impede viral replication without provoking resistance. We evaluated naphthoquinone fragments, discovering potent HsDHODH inhibition with IC50 ranging from 48 to 684 nM, and promising in vitro anti-SARS-CoV-2 activity with EC50 ranging from 1.2 to 2.3 μM. These compounds exhibited low toxicity, indicating potential for further development. Additionally, we employed computational tools such as molecular docking and quantitative structure-activity relationship (QSAR) models to analyze protein-ligand interactions, revealing that these naphthoquinones exhibit a protein binding pattern similar to brequinar, a potent HsDHODH inhibitor. These findings represent a significant step forward in the search for effective antiviral treatments and have great potential to impact the development of new broad-spectrum antiviral drugs.
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Affiliation(s)
- Aline
D. Purificação
- Protein
Crystallography Laboratory, Department of Biomolecular Sciences, School
of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
| | - Sabrina Silva-Mendonça
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
| | - Luiza V. Cruz
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
| | - Carolina Q. Sacramento
- Laboratory
of Immunopharmacology, Oswaldo Cruz Institute, Fiocruz, Rio de
Janeiro 21040-900, RJ, Brazil
- National
Institute for Science and Technology on Innovation in Diseases of
Neglected Populations (INCT/IDPN), Center for Technological Development
in Health (CDTS), Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Jairo R. Temerozo
- Laboratory
of Immunopharmacology, Oswaldo Cruz Institute, Fiocruz, Rio de
Janeiro 21040-900, RJ, Brazil
- National
Institute for Science and Technology on Innovation in Diseases of
Neglected Populations (INCT/IDPN), Center for Technological Development
in Health (CDTS), Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
- National
Institute for Science and Technology on Neuroimmunomodulation, Oswaldo
Cruz Institute, Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Natalia Fintelman-Rodrigues
- Laboratory
of Immunopharmacology, Oswaldo Cruz Institute, Fiocruz, Rio de
Janeiro 21040-900, RJ, Brazil
- National
Institute for Science and Technology on Innovation in Diseases of
Neglected Populations (INCT/IDPN), Center for Technological Development
in Health (CDTS), Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Caroline Souza de Freitas
- Laboratory
of Immunopharmacology, Oswaldo Cruz Institute, Fiocruz, Rio de
Janeiro 21040-900, RJ, Brazil
- National
Institute for Science and Technology on Innovation in Diseases of
Neglected Populations (INCT/IDPN), Center for Technological Development
in Health (CDTS), Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Bruna Fleck Godoi
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Laboratory
of Heterocyclic and Medicinal Chemistry (QHeteM), Department of Pharmaceutical
Sciences, School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirao Preto 05508-060, SP, Brazil
| | - Miguel Menezes Vaidergorn
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Laboratory
of Heterocyclic and Medicinal Chemistry (QHeteM), Department of Pharmaceutical
Sciences, School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirao Preto 05508-060, SP, Brazil
| | - Juliana Almeida Leite
- Laboratory
of Tropical Diseases, Department of Genetics, Evolution, Microbiology
and Immunology, Institute of Biology, Unicamp, Campinas 13.083-857, SP, Brazil
| | - Luis Carlos Salazar Alvarez
- Laboratory
of Tropical Diseases, Department of Genetics, Evolution, Microbiology
and Immunology, Institute of Biology, Unicamp, Campinas 13.083-857, SP, Brazil
| | - Murillo V. Freitas
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
| | - Meryck F. B. Silvac
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
- Laboratory
of Cheminformatics, Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
| | - Bianca A. Martin
- Innovation
Center in Nanostructured Systems and Topical Administration (NanoTop),
School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
| | - Renata F. V. Lopez
- Innovation
Center in Nanostructured Systems and Topical Administration (NanoTop),
School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
| | - Bruno J. Neves
- Laboratory
of Cheminformatics, Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
| | - Fabio T. M. Costa
- Laboratory
of Tropical Diseases, Department of Genetics, Evolution, Microbiology
and Immunology, Institute of Biology, Unicamp, Campinas 13.083-857, SP, Brazil
| | - Thiago M. L. Souza
- Laboratory
of Immunopharmacology, Oswaldo Cruz Institute, Fiocruz, Rio de
Janeiro 21040-900, RJ, Brazil
- National
Institute for Science and Technology on Innovation in Diseases of
Neglected Populations (INCT/IDPN), Center for Technological Development
in Health (CDTS), Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Flavio da Silva Emery
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Laboratory
of Heterocyclic and Medicinal Chemistry (QHeteM), Department of Pharmaceutical
Sciences, School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirao Preto 05508-060, SP, Brazil
| | - Carolina Horta Andrade
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
- Center
for Excellence in Artificial Intelligence (CEIA), Institute of Informatics, Universidade Federal de Goiás, Goiânia 74605-170, GO, Brazil
| | - M. Cristina Nonato
- Protein
Crystallography Laboratory, Department of Biomolecular Sciences, School
of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
- Center
for the Research and Advancement in Fragments and molecular Targets
(CRAFT), School of Pharmaceutical Sciences at Ribeirao Preto, University of São Paulo, Ribeirão Preto 05508-060, SP, Brazil
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3
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Tomaz KCP, Tavella TA, Borba JVB, Salazar-Alvarez LC, Levandoski JE, Mottin M, Sousa BKP, Moreira-Filho JT, Almeida VM, Clementino LC, Bourgard C, Massirer KB, Couñago RM, Andrade CH, Sunnerhagen P, Bilsland E, Cassiano GC, Costa FTM. Identification of potential inhibitors of casein kinase 2 alpha of Plasmodium falciparum with potent in vitro activity. Antimicrob Agents Chemother 2023; 67:e0058923. [PMID: 37819090 PMCID: PMC10649021 DOI: 10.1128/aac.00589-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/11/2023] [Indexed: 10/13/2023] Open
Abstract
Drug resistance to commercially available antimalarials is a major obstacle in malaria control and elimination, creating the need to find new antiparasitic compounds with novel mechanisms of action. The success of kinase inhibitors for oncological treatments has paved the way for the exploitation of protein kinases as drug targets in various diseases, including malaria. Casein kinases are ubiquitous serine/threonine kinases involved in a wide range of cellular processes such as mitotic checkpoint signaling, DNA damage response, and circadian rhythm. In Plasmodium, it is suggested that these protein kinases are essential for both asexual and sexual blood-stage parasites, reinforcing their potential as targets for multi-stage antimalarials. To identify new putative PfCK2α inhibitors, we utilized an in silico chemogenomic strategy involving virtual screening with docking simulations and quantitative structure-activity relationship predictions. Our investigation resulted in the discovery of a new quinazoline molecule (542), which exhibited potent activity against asexual blood stages and a high selectivity index (>100). Subsequently, we conducted chemical-genetic interaction analysis on yeasts with mutations in casein kinases. Our chemical-genetic interaction results are consistent with the hypothesis that 542 inhibits yeast Cka1, which has a hinge region with high similarity to PfCK2α. This finding is in agreement with our in silico results suggesting that 542 inhibits PfCK2α via hinge region interaction.
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Affiliation(s)
- Kaira C. P. Tomaz
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
| | - Tatyana A. Tavella
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
| | - Joyce V. B. Borba
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
- Laboratory of Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | - Luis C. Salazar-Alvarez
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
| | - João E. Levandoski
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas, Campinas, Brazil
| | - Melina Mottin
- Laboratory of Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | - Bruna K. P. Sousa
- Laboratory of Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | - José T. Moreira-Filho
- Laboratory of Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | - Vitor M. Almeida
- Centro de Química Medicinal (CQMED), Centro de Biologia Molecular e Engenharia Genética(CBMEG), Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - Leandro C. Clementino
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
| | - Catarina Bourgard
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Katlin B. Massirer
- Centro de Química Medicinal (CQMED), Centro de Biologia Molecular e Engenharia Genética(CBMEG), Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - Rafael M. Couñago
- Centro de Química Medicinal (CQMED), Centro de Biologia Molecular e Engenharia Genética(CBMEG), Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- Structural Genomics Consortium, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Carolina H. Andrade
- Laboratory of Molecular Modeling and Drug Design (LabMol), Faculty of Pharmacy, Universidade Federal de Goiás (UFG), Goiânia, Brazil
- Center for Research and Advancement of Fragments and Molecular Targets (CRAFT), University of São Paulo, São Paulo, Brazil
- Center for Excellence in Artificial Intelligence (CEIA), Institute of Informatics, Universidade Federal de Goiás, Goiânia, Brazil
| | - Per Sunnerhagen
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Elizabeth Bilsland
- Department of Structural and Functional Biology, Synthetic Biology Laboratory, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Gustavo C. Cassiano
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Fabio T. M. Costa
- Laboratory of Tropical Diseases (LDT), Institute of Biology, University of Campinas, Campinas, Brazil
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4
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Borba JB, de Azevedo BR, Ferreira LA, Rimoldi A, Salazar Alvarez LC, Calit J, Bargieri DY, Costa FTM, Andrade CH. Transcriptomics-Guided In Silico Drug Repurposing: Identifying New Candidates with Dual-Stage Antiplasmodial Activity. ACS Omega 2023; 8:34084-34090. [PMID: 37744849 PMCID: PMC10515587 DOI: 10.1021/acsomega.3c05138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/18/2023] [Indexed: 09/26/2023]
Abstract
In tropical and subtropical areas, malaria stands as a profound public health challenge, causing an estimated 247 million cases worldwide annually. Given the absence of a viable vaccine, the timely and effective treatment of malaria remains a critical priority. However, the growing resistance of parasites to currently utilized drugs underscores the critical need for the identification of new antimalarial therapies. Here, we aimed to identify potential new drug candidates against Plasmodium falciparum, the main causative agent of malaria, by analyzing the transcriptomes of different life stages of the parasite and identifying highly expressed genes. We searched for genes that were expressed in all stages of the parasite's life cycle, including the asexual blood stage, gametocyte stage, liver stage, and sexual stages in the insect vector, using transcriptomics data from publicly available databases. From this analysis, we found 674 overlapping genes, including 409 essential ones. By searching through drug target databases, we discovered 70 potential drug targets and 75 associated bioactive compounds. We sought to expand this analysis to similar compounds to known drugs. So, we found a list of 1557 similar compounds, which we predicted as actives and inactives using previously developed machine learning models against five life stages of Plasmodium spp. From this analysis, two compounds were selected, and the reactions were experimentally evaluated. The compounds HSP-990 and silvestrol aglycone showed potent inhibitory activity at nanomolar concentrations against the P. falciparum 3D7 strain asexual blood stage. Moreover, silvestrol aglycone exhibited low cytotoxicity in mammalian cells, transmission-blocking potential, and inhibitory activity comparable to those of established antimalarials. These findings warrant further investigation of silvestrol aglycone as a potential dual-acting antimalarial and transmission-blocking candidate for malaria control.
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Affiliation(s)
- Joyce
V. B. Borba
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculdade de Farmacia, Universidade Federal de Goias, 74605-170 Goiânia, Goiás, Brazil
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da Silva, Department
of Genetics Evolution, Microbiology and Immunology, University of Campinas, 13083-970 Campinas, São
Paulo, Brazil
| | - Beatriz Rosa de Azevedo
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculdade de Farmacia, Universidade Federal de Goias, 74605-170 Goiânia, Goiás, Brazil
| | - Larissa A. Ferreira
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da Silva, Department
of Genetics Evolution, Microbiology and Immunology, University of Campinas, 13083-970 Campinas, São
Paulo, Brazil
| | - Aline Rimoldi
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da Silva, Department
of Genetics Evolution, Microbiology and Immunology, University of Campinas, 13083-970 Campinas, São
Paulo, Brazil
| | - Luís C. Salazar Alvarez
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da Silva, Department
of Genetics Evolution, Microbiology and Immunology, University of Campinas, 13083-970 Campinas, São
Paulo, Brazil
| | - Juliana Calit
- Department
of Parasitology, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
| | - Daniel Y. Bargieri
- Department
of Parasitology, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
| | - Fabio T. M. Costa
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da Silva, Department
of Genetics Evolution, Microbiology and Immunology, University of Campinas, 13083-970 Campinas, São
Paulo, Brazil
| | - Carolina Horta Andrade
- Laboratory
for Molecular Modeling and Drug Design (LabMol), Faculdade de Farmacia, Universidade Federal de Goias, 74605-170 Goiânia, Goiás, Brazil
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5
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Mahambo E, Uwamariya C, Miah M, Clementino LDC, Alvarez LCS, Di Santo Meztler GP, Trybala E, Said J, Wieske LHE, Ward JS, Rissanen K, Munissi JJE, Costa FTM, Sunnerhagen P, Bergström T, Nyandoro SS, Erdelyi M. Crotofolane Diterpenoids and Other Constituents Isolated from Croton kilwae. J Nat Prod 2023; 86:380-389. [PMID: 36749598 PMCID: PMC9972476 DOI: 10.1021/acs.jnatprod.2c01007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Indexed: 06/18/2023]
Abstract
Six new crotofolane diterpenoids (1-6) and 13 known compounds (7-19) were isolated from the MeOH-CH2Cl2 (1:1, v/v) extracts of the leaves and stem bark of Croton kilwae. The structures of the new compounds were elucidated by extensive analysis of spectroscopic and mass spectrometric data. The structure of crotokilwaepoxide A (1) was confirmed by single-crystal X-ray diffraction, allowing for the determination of its absolute configuration. The crude extracts and the isolated compounds were investigated for antiviral activity against respiratory syncytial virus (RSV) and human rhinovirus type-2 (HRV-2) in HEp-2 and HeLa cells, respectively, for antibacterial activity against the Gram-positive Bacillus subtilis and the Gram-negative Escherichia coli, and for antimalarial activity against the Plasmodium falciparum Dd2 strain. ent-3β,19-Dihydroxykaur-16-ene (7) and ayanin (16) displayed anti-RSV activities with IC50 values of 10.2 and 6.1 μM, respectively, while exhibiting only modest cytotoxic effects on HEp-2 cells that resulted in selectivity indices of 4.9 and 16.4. Compounds 2 and 5 exhibited modest anti-HRV-2 activity (IC50 of 44.6 μM for both compounds), while compound 16 inhibited HRV-2 with an IC50 value of 1.8 μM. Compounds 1-3 showed promising antiplasmodial activities (80-100% inhibition) at a 50 μM concentration.
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Affiliation(s)
- Emanuel
T. Mahambo
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
| | - Colores Uwamariya
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Masum Miah
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Leandro da Costa Clementino
- Laboratory
of Tropical Diseases - Prof. Dr. Luiz Jacinto da Silva, Department
of Genetics, Evolution, Microbiology and Immunology, Institute of
Biology (IB), University of Campinas - UNICAMP, Campinas, 13083-970 SP, Brazil
| | - Luis Carlos Salazar Alvarez
- Laboratory
of Tropical Diseases - Prof. Dr. Luiz Jacinto da Silva, Department
of Genetics, Evolution, Microbiology and Immunology, Institute of
Biology (IB), University of Campinas - UNICAMP, Campinas, 13083-970 SP, Brazil
| | - Gabriela Paula Di Santo Meztler
- Department
of Chemistry and Molecular Biology and Centre for Antibiotic Resistance
Research (CARe), University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Edward Trybala
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Joanna Said
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Lianne H. E. Wieske
- Department
of Chemistry − BMC, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Jas S. Ward
- Department
of Chemistry, University of Jyvaskyla, Survontie 9B, 40014 Jyväskylä, Finland
| | - Kari Rissanen
- Department
of Chemistry, University of Jyvaskyla, Survontie 9B, 40014 Jyväskylä, Finland
| | - Joan J. E. Munissi
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
| | - Fabio T. M. Costa
- Laboratory
of Tropical Diseases - Prof. Dr. Luiz Jacinto da Silva, Department
of Genetics, Evolution, Microbiology and Immunology, Institute of
Biology (IB), University of Campinas - UNICAMP, Campinas, 13083-970 SP, Brazil
| | - Per Sunnerhagen
- Department
of Chemistry and Molecular Biology and Centre for Antibiotic Resistance
Research (CARe), University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Tomas Bergström
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Stephen S. Nyandoro
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
| | - Mate Erdelyi
- Department
of Chemistry − BMC, Uppsala University, SE-751 23 Uppsala, Sweden
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Borba-Junior IT, Moraes CRP, Lima F, Barbosa MS, Annichino-Bizzacchi JM, Mansour E, Velloso LA, Costa FTM, Orsi FA, Paula EV. AVALIAÇÃO DA INTEGRIDADE DA BARREIRA ENDOTELIAL E SUA RELAÇÃO COM AS MANIFESTAÇÕES CLÍNICAS E LABORATORIAIS NA COVID-19. Hematol Transfus Cell Ther 2021. [PMCID: PMC8530677 DOI: 10.1016/j.htct.2021.10.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Objetivos Os mecanismos fisiopatológicos que determinam a gravidade da Covid-19 estão associados a ativação da hemostasia e da imunidade inata, em um processo coletivamente referido como imunotrombose, e que envolve ativação plaquetária, geração de NETs (do inglês, Nucleo extracelular traps), expressão de fator tecidual, ativação do complemento e ativação endotelial. Um elemento importante da ativação endotelial é a quebra da barreira endotelial (BE), que ocorre para facilitar o acesso de leucócitos aos tecidos, onde contribuem para erradicação dos patógenos. No entanto, a avaliação da integridade da BE é desafiadora, exigindo o uso de modelos celulares. O objetivo desse estudo foi avaliar o efeito do soro de pacientes com Covid-19 sobre a integridade da BE em monocamadas de células endoteliais, e sua correlação com características clínicas da doença. Materiais e métodos A população do estudo consistiu em 30 pacientes com Covid-19 que apresentavam comprometimento pulmonar confirmado por tomografia de tórax, e necessidade de internação hospitalar por hipoxemia e 30 controles saudáveis pareados por sexo e idade. Os pacientes recrutados fizeram parte de um estudo clínico (REBEC: U1111-1250-1843), e as amostras utilizadas nesta avaliação foram obtidas no momento da internação, antes de qualquer intervenção. Monocamadas de células endoteliais de duas fontes (HUVECs: células de cordão umbilical; HULECs: células endoteliais pulmonares) foram estimuladas com soro de pacientes e indivíduos saudáveis (diluição 15% em meio de cultura) e a integridade da BE foi avaliada por um sensor de impedância celular (ECIS; Eletric Cell-substrate Impedance Sensing System) continuamente por 36 horas. Biomarcadores de gravidade e relacionados à ativação da hemostasia foram avaliados por kits comerciais. Dados clínicos foram obtidos a partir dos prontuários digitais. Resultados O soro de pacientes com Covid-19 induziu quebra de BE significativamente mais acentuada que o de indivíduos saudáveis em HUVECs nos tempos 15 min (p < 0,01); 30 min (p ≤ 0,001); 1h (p ≤ 0,0001); 2h (p ≤ 0,0001); 3h (p ≤ 0,0001); 4h (p ≤ 0,01) e 5h (p ≤ 0,05). Estes resultados foram confirmados no modelo de células endoteliais pulmonares (HULECs). A magnitude da quebra apresentou correlação significativa com desfechos clínicos relevantes como tempo de internação total (RS até 0.57) e tempo de UTI (RS = 0,47). Em relação a biomarcadores de interesse na Covid-19, a quebra da BE apresentou correlação significativa com neutrofilia, relação neutrófilo/linfócito, fator de Von Willebrand, fatores IX e XI, fibrinogênio, D-dímero e uPAR (Receptor de Uroquinase). Discussão Através de um método considerado padrão-ouro para avaliação in vitro da integridade da BE nós demonstramos que componentes presentes no soro de pacientes com Covid-19 são capazes de promover a quebra da BE, e que a magnitude deste processo está relacionada à gravidade desta doença. A correlação com outros marcadores inflamatórios corrobora a conexão entre os mecanismos envolvidos na imunotrombose em pacientes com Covid-19. Conclusão nossos resultados apontam a quebra da BE como um alvo terapêutico atrativo nestes pacientes.
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7
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Silva-Filho JL, de Oliveira LG, Monteiro L, Parise PL, Zanluqui NG, Polonio CM, de Freitas CL, Toledo-Teixeira DA, de Souza WM, Bittencourt N, Amorim MR, Forato J, Muraro SP, de Souza GF, Martini MC, Bispo-Dos-Santos K, Vieira A, Judice CC, Pastore GM, Amaral E, Passini Junior R, Mayer-Milanez HMBP, Ribeiro-do-Valle CC, Calil R, Renato Bennini Junior J, Lajos GJ, Altemani A, Nolasco da Silva MT, Carolina Coan A, Francisca Colella-Santos M, von Zuben APB, Vinolo MAR, Arns CW, Catharino RR, Costa ML, Angerami RN, Freitas ARR, Resende MR, Garcia MT, Luiza Moretti M, Renia L, Ng LFP, Rothlin CV, Costa FTM, Peron JPS, Proença-Modena JL. Gas6 drives Zika virus-induced neurological complications in humans and congenital syndrome in immunocompetent mice. Brain Behav Immun 2021; 97:260-274. [PMID: 34390806 DOI: 10.1016/j.bbi.2021.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 01/21/2023] Open
Abstract
Zika virus (ZIKV) has the ability to cross placental and brain barriers, causing congenital malformations in neonates and neurological disorders in adults. However, the pathogenic mechanisms of ZIKV-induced neurological complications in adults and congenital malformations are still not fully understood. Gas6 is a soluble TAM receptor ligand able to promote flavivirus internalization and downregulation of immune responses. Here we demonstrate that there is a correlation between ZIKV neurological complications with higher Gas6 levels and the downregulation of genes associated with anti-viral response, as type I IFN due to Socs1 upregulation. Also, Gas6 gamma-carboxylation is essential for ZIKV invasion and replication in monocytes, the main source of this protein, which was inhibited by warfarin. Conversely, Gas6 facilitates ZIKV replication in adult immunocompetent mice and enabled susceptibility to transplacental infection. Our data indicate that ZIKV promotes the upregulation of its ligand Gas6, which contributes to viral infectivity and drives the development of severe adverse outcomes during ZIKV infection.
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Affiliation(s)
- Joao Luiz Silva-Filho
- Laboratory of Tropical Diseases Prof. Luiz Jacintho Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Lilian G de Oliveira
- Neuroimmune Interactions Laboratory, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Leticia Monteiro
- Laboratory of Tropical Diseases Prof. Luiz Jacintho Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Pierina L Parise
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Nagela G Zanluqui
- Neuroimmune Interactions Laboratory, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Carolina M Polonio
- Neuroimmune Interactions Laboratory, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Carla L de Freitas
- Neuroimmune Interactions Laboratory, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Daniel A Toledo-Teixeira
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - William M de Souza
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Najara Bittencourt
- Laboratory of Tropical Diseases Prof. Luiz Jacintho Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Mariene R Amorim
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Julia Forato
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Stéfanie P Muraro
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Gabriela F de Souza
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Matheus C Martini
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Karina Bispo-Dos-Santos
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Aline Vieira
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Carla C Judice
- Laboratory of Tropical Diseases Prof. Luiz Jacintho Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | | | - Eliana Amaral
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Renato Passini Junior
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Helaine M B P Mayer-Milanez
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Carolina C Ribeiro-do-Valle
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Roseli Calil
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - João Renato Bennini Junior
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Giuliane J Lajos
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Albina Altemani
- Department of Clinical Pathology, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Marcos T Nolasco da Silva
- Pediatric Immunology, Center for Investigation in Pediatrics, Faculty of Medical Sciences, UNICAMP, Brazil
| | - Ana Carolina Coan
- Department of Neurology, School of Medical Sciences, UNICAMP, Brazil
| | | | | | - Marco Aurélio R Vinolo
- Department of Genetics, Microbiology and Immunology, Institute of Biology, UNICAMP, Brazil
| | - Clarice Weis Arns
- Department of Genetics, Microbiology and Immunology, Institute of Biology, UNICAMP, Brazil
| | | | - Maria Laura Costa
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas. Brazil
| | - Rodrigo N Angerami
- Campinas Department of Public Health Surveillance, Campinas, Brazil; Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | | | - Mariangela R Resende
- Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Márcia T Garcia
- Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Maria Luiza Moretti
- Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Laurent Renia
- A*STAR Infectious Diseases Labs (A* ID Labs), Agency for Science, Technology and Research, Biopolis, Singapore; Singapore Immunology Network, Agency for Science, Technology and Research, Biopolis, Singapore
| | - Lisa F P Ng
- A*STAR Infectious Diseases Labs (A* ID Labs), Agency for Science, Technology and Research, Biopolis, Singapore; Singapore Immunology Network, Agency for Science, Technology and Research, Biopolis, Singapore
| | - Carla V Rothlin
- Department of Immunobiology, Yale University, School of Medicine, New Haven, CT, United States
| | - Fabio T M Costa
- Laboratory of Tropical Diseases Prof. Luiz Jacintho Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil.
| | - Jean Pierre Schatzmann Peron
- Neuroimmune Interactions Laboratory, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil; Immunopathology and Allergy Post Graduate Program, School of Medicine, University of São Paulo, São Paulo, Brazil; Scientific Platform Pasteur-USP, University of São Paulo (USP), São Paulo, SP, Brazil.
| | - José Luiz Proença-Modena
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil; Experimental Medicine Research Cluster (EMRC), University of Campinas, Campinas, SP 13083-862, Brazil.
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8
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Lima MNN, Borba JVB, Cassiano GC, Mottin M, Mendonça SS, Silva AC, Tomaz KCP, Calit J, Bargieri DY, Costa FTM, Andrade CH. Artificial Intelligence Applied to the Rapid Identification of New Antimalarial Candidates with Dual-Stage Activity. ChemMedChem 2021; 16:1093-1103. [PMID: 33247522 DOI: 10.1002/cmdc.202000685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2002] [Revised: 11/16/2020] [Indexed: 01/06/2023]
Abstract
Increasing reports of multidrug-resistant malaria parasites urge the discovery of new effective drugs with different chemical scaffolds. Protein kinases play a key role in many cellular processes such as signal transduction and cell division, making them interesting targets in many diseases. Protein kinase 7 (PK7) is an orphan kinase from the Plasmodium genus, essential for the sporogonic cycle of these parasites. Here, we applied a robust and integrative artificial intelligence-assisted virtual-screening (VS) approach using shape-based and machine learning models to identify new potential PK7 inhibitors with in vitro antiplasmodial activity. Eight virtual hits were experimentally evaluated, and compound LabMol-167 inhibited ookinete conversion of Plasmodium berghei and blood stages of Plasmodium falciparum at nanomolar concentrations with low cytotoxicity in mammalian cells. As PK7 does not have an essential role in the Plasmodium blood stage and our virtual screening strategy aimed for both PK7 and blood-stage inhibition, we conducted an in silico target fishing approach and propose that this compound might also inhibit P. falciparum PK5, acting as a possible dual-target inhibitor. Finally, docking studies of LabMol-167 with P. falciparum PK7 and PK5 proteins highlighted key interactions for further hit-to lead optimization.
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Affiliation(s)
- Marilia N N Lima
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goias, Rua 240, qd. 87, Goiânia, GO, 74605-170, Brazil
| | - Joyce V B Borba
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goias, Rua 240, qd. 87, Goiânia, GO, 74605-170, Brazil.,Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics Evolution, Microbiology and Immunology, Institute of Biology, 13083-970, Campinas, SP, Brazil
| | - Gustavo C Cassiano
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics Evolution, Microbiology and Immunology, Institute of Biology, 13083-970, Campinas, SP, Brazil.,Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Melina Mottin
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goias, Rua 240, qd. 87, Goiânia, GO, 74605-170, Brazil
| | - Sabrina S Mendonça
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goias, Rua 240, qd. 87, Goiânia, GO, 74605-170, Brazil
| | - Arthur C Silva
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goias, Rua 240, qd. 87, Goiânia, GO, 74605-170, Brazil
| | - Kaira C P Tomaz
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics Evolution, Microbiology and Immunology, Institute of Biology, 13083-970, Campinas, SP, Brazil
| | - Juliana Calit
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, 05508-000, São Paulo, SP, Brazil
| | - Daniel Y Bargieri
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, 05508-000, São Paulo, SP, Brazil
| | - Fabio T M Costa
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics Evolution, Microbiology and Immunology, Institute of Biology, 13083-970, Campinas, SP, Brazil
| | - Carolina H Andrade
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goias, Rua 240, qd. 87, Goiânia, GO, 74605-170, Brazil.,Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics Evolution, Microbiology and Immunology, Institute of Biology, 13083-970, Campinas, SP, Brazil
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9
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Bourgard C, Lopes SCP, Lacerda MVG, Albrecht L, Costa FTM. A suitable RNA preparation methodology for whole transcriptome shotgun sequencing harvested from Plasmodium vivax-infected patients. Sci Rep 2021; 11:5089. [PMID: 33658571 PMCID: PMC7930272 DOI: 10.1038/s41598-021-84607-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 01/06/2021] [Indexed: 12/03/2022] Open
Abstract
Plasmodium vivax is a world-threatening human malaria parasite, whose biology remains elusive. The unavailability of in vitro culture, and the difficulties in getting a high number of pure parasites makes RNA isolation in quantity and quality a challenge. Here, a methodological outline for RNA-seq from P. vivax isolates with low parasitemia is presented, combining parasite maturation and enrichment with efficient RNA extraction, yielding ~ 100 pg.µL−1 of RNA, suitable for SMART-Seq Ultra-Low Input RNA library and Illumina sequencing. Unbiased coding transcriptome of ~ 4 M reads was achieved for four patient isolates with ~ 51% of transcripts mapped to the P. vivax P01 reference genome, presenting heterogeneous profiles of expression among individual isolates. Amongst the most transcribed genes in all isolates, a parasite-staged mixed repertoire of conserved parasite metabolic, membrane and exported proteins was observed. Still, a quarter of transcribed genes remain functionally uncharacterized. In parallel, a P. falciparum Brazilian isolate was also analyzed and 57% of its transcripts mapped against IT genome. Comparison of transcriptomes of the two species revealed a common trophozoite-staged expression profile, with several homologous genes being expressed. Collectively, these results will positively impact vivax research improving knowledge of P. vivax biology.
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Affiliation(s)
- Catarina Bourgard
- Laboratory of Tropical Diseases, Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Stefanie C P Lopes
- Instituto Leônidas & Maria Deane, Fundação Oswaldo Cruz-Fiocruz, Manaus, AM, Brazil.,Fundação de Medicina Tropical Dr. Heitor Vieira Dourado-FMT-HVD, Gerência de Malária, Manaus, AM, Brazil
| | - Marcus V G Lacerda
- Instituto Leônidas & Maria Deane, Fundação Oswaldo Cruz-Fiocruz, Manaus, AM, Brazil.,Fundação de Medicina Tropical Dr. Heitor Vieira Dourado-FMT-HVD, Gerência de Malária, Manaus, AM, Brazil
| | - Letusa Albrecht
- Laboratory of Tropical Diseases, Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas-UNICAMP, Campinas, SP, Brazil. .,Instituto Carlos Chagas, Fundação Oswaldo Cruz-Fiocruz, Curitiba, PR, Brazil.
| | - Fabio T M Costa
- Laboratory of Tropical Diseases, Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas-UNICAMP, Campinas, SP, Brazil.
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10
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Albrecht L, Lopes SCP, da Silva ABIE, Barbosa V, Almeida RP, Siqueira AM, Leite JA, Bittencourt NC, Dos Santos HG, Bourgard C, Garcia LFC, Kayano ACAV, Soares IS, Russell B, Rénia L, Lacerda MVG, Costa FTM. Rosettes integrity protects Plasmodium vivax of being phagocytized. Sci Rep 2020; 10:16706. [PMID: 33028898 PMCID: PMC7541459 DOI: 10.1038/s41598-020-73713-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/27/2020] [Indexed: 01/18/2023] Open
Abstract
Plasmodium vivax is the most prevalent cause of malaria outside of Africa. P. vivax biology and pathogenesis are still poorly understood. The role of one highly occurring phenotype in particular where infected reticulocytes cytoadhere to noninfected normocytes, forming rosettes, remains unknown. Here, using a range of ex vivo approaches, we showed that P. vivax rosetting rates were enhanced by plasma of infected patients and that total immunoglobulin M levels correlated with rosetting frequency. Moreover, rosetting rates were also correlated with parasitemia, IL-6 and IL-10 levels in infected patients. Transcriptomic analysis of peripheral leukocytes from P. vivax-infected patients with low or moderated rosetting rates identified differentially expressed genes related to human host phagocytosis pathway. In addition, phagocytosis assay showed that rosetting parasites were less phagocyted. Collectively, these results showed that rosette formation plays a role in host immune response by hampering leukocyte phagocytosis. Thus, these findings suggest that rosetting could be an effective P. vivax immune evasion strategy.
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Affiliation(s)
- Letusa Albrecht
- Laboratório de Pesquisa em Apicomplexa, Instituto Carlos Chagas, Fiocruz Paraná, Curitiba, PR, Brazil. .,Laboratório de Doenças Tropicais Prof. Luiz Jacintho da Silva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil.
| | - Stefanie C P Lopes
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, AM, Brazil.,Instituto Leônidas & Maria Deane, Fiocruz Amazônia, Manaus, AM, Brazil
| | | | - Vanessa Barbosa
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, AM, Brazil.,Instituto Leônidas & Maria Deane, Fiocruz Amazônia, Manaus, AM, Brazil
| | - Rodrigo P Almeida
- Laboratório de Pesquisa em Apicomplexa, Instituto Carlos Chagas, Fiocruz Paraná, Curitiba, PR, Brazil
| | - André M Siqueira
- Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Juliana Almeida Leite
- Laboratório de Doenças Tropicais Prof. Luiz Jacintho da Silva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Najara C Bittencourt
- Laboratório de Doenças Tropicais Prof. Luiz Jacintho da Silva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | | | - Catarina Bourgard
- Laboratório de Doenças Tropicais Prof. Luiz Jacintho da Silva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | | | - Ana Carolina A V Kayano
- Laboratório de Pesquisa em Apicomplexa, Instituto Carlos Chagas, Fiocruz Paraná, Curitiba, PR, Brazil.,Laboratório de Doenças Tropicais Prof. Luiz Jacintho da Silva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Irene S Soares
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo, SP, Brazil
| | - Bruce Russell
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Laurent Rénia
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore
| | - Marcus V G Lacerda
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, AM, Brazil.,Instituto Leônidas & Maria Deane, Fiocruz Amazônia, Manaus, AM, Brazil
| | - Fabio T M Costa
- Laboratório de Doenças Tropicais Prof. Luiz Jacintho da Silva, Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil.
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11
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Hung J, Goodman A, Ravel D, Lopes SCP, Rangel GW, Nery OA, Malleret B, Nosten F, Lacerda MVG, Ferreira MU, Rénia L, Duraisingh MT, Costa FTM, Marti M, Carpenter AE. Keras R-CNN: library for cell detection in biological images using deep neural networks. BMC Bioinformatics 2020; 21:300. [PMID: 32652926 PMCID: PMC7353739 DOI: 10.1186/s12859-020-03635-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 06/24/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND A common yet still manual task in basic biology research, high-throughput drug screening and digital pathology is identifying the number, location, and type of individual cells in images. Object detection methods can be useful for identifying individual cells as well as their phenotype in one step. State-of-the-art deep learning for object detection is poised to improve the accuracy and efficiency of biological image analysis. RESULTS We created Keras R-CNN to bring leading computational research to the everyday practice of bioimage analysts. Keras R-CNN implements deep learning object detection techniques using Keras and Tensorflow ( https://github.com/broadinstitute/keras-rcnn ). We demonstrate the command line tool's simplified Application Programming Interface on two important biological problems, nucleus detection and malaria stage classification, and show its potential for identifying and classifying a large number of cells. For malaria stage classification, we compare results with expert human annotators and find comparable performance. CONCLUSIONS Keras R-CNN is a Python package that performs automated cell identification for both brightfield and fluorescence images and can process large image sets. Both the package and image datasets are freely available on GitHub and the Broad Bioimage Benchmark Collection.
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Affiliation(s)
- Jane Hung
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- The Broad Institute, Cambridge, MA, USA
| | | | - Deepali Ravel
- Harvard T.H.Chan School of Public Health, Boston, MA, USA
| | - Stefanie C P Lopes
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz (FIOCRUZ), Manaus, Amazonas, Brazil
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, Amazonas, Brazil
| | | | | | - Benoit Malleret
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119077, Singapore
- Singapore Immunology Network (SIgN), Agency for Science Research & Technology, Singapore, 138632, Singapore
| | - Francois Nosten
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
- Centre for Tropical Medicine and Global Health, Nuffield, Oxford, UK
| | - Marcus V G Lacerda
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz (FIOCRUZ), Manaus, Amazonas, Brazil
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, Amazonas, Brazil
| | | | - Laurent Rénia
- Singapore Immunology Network (SIgN), Agency for Science Research & Technology, Singapore, 138632, Singapore
| | | | - Fabio T M Costa
- Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, SP, Brazil
| | - Matthias Marti
- Harvard T.H.Chan School of Public Health, Boston, MA, USA
- Wellcome Centre for Integrative Parasitology Institute of Infection, Immunity and Inflammation, College of Medical Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
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12
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Bittencourt NC, da Silva ABIE, Virgili NS, Schappo AP, Gervásio JHDB, Pimenta TS, Kujbida Junior MA, Ventura AMRS, Libonati RMF, Silva-Filho JL, dos Santos HG, Lopes SCP, Lacerda MVG, Machado RLD, Costa FTM, Albrecht L. Plasmodium vivax AMA1: Implications of distinct haplotypes for immune response. PLoS Negl Trop Dis 2020; 14:e0008471. [PMID: 32639964 PMCID: PMC7371208 DOI: 10.1371/journal.pntd.0008471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 07/20/2020] [Accepted: 06/10/2020] [Indexed: 02/07/2023] Open
Abstract
In Brazil, Plasmodium vivax infection accounts for around 80% of malaria cases. This infection has a substantial impact on the productivity of the local population as the course of the disease is usually prolonged and the development of acquired immunity in endemic areas takes several years. The recent emergence of drug-resistant strains has intensified research on alternative control methods such as vaccines. There is currently no effective available vaccine against malaria; however, numerous candidates have been studied in the past several years. One of the leading candidates is apical membrane antigen 1 (AMA1). This protein is involved in the invasion of Apicomplexa parasites into host cells, participating in the formation of a moving junction. Understanding how the genetic diversity of an antigen influences the immune response is highly important for vaccine development. In this study, we analyzed the diversity of AMA1 from Brazilian P. vivax isolates and 19 haplotypes of P. vivax were found. Among those sequences, 33 nonsynonymous PvAMA1 amino acid sites were identified, whereas 20 of these sites were determined to be located in predicted B-cell epitopes. Nonsynonymous mutations were evaluated for their influence on the immune recognition of these antigens. Two distinct haplotypes, 5 and 16, were expressed and evaluated for reactivity in individuals from northern Brazil. Both PvAMA1 variants were reactive. Moreover, the IgG antibody response to these two PvAMA1 variants was analyzed in an exposed but noninfected population from a P. vivax endemic area. Interestingly, over 40% of this population had antibodies recognizing both variants. These results have implications for the design of a vaccine based on a polymorphic antigen. Plasmodium vivax is the most abundant Plasmodium species in Brazil. While this species has been neglected for many years, the recent emergence of drug-resistant strains and the absence of a vaccine intensified the efforts for a better control method. Naturally acquired immune response analysis is a useful tool for understanding the antigenicity of Plasmodium proteins and evaluating the potential of a vaccine candidate. In this study, the genetic variability of one of the leading P. vivax vaccine candidates (PvAMA1) was analyzed. Two distinct variants were expressed and the antibody response was evaluated in infected and noninfected individuals in the Brazilian Amazon. This improved understanding of the magnitude and dynamics of the antibody response will contribute to the knowledge of a vaccine candidate and open new perspectives in vivax malaria vaccine development.
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Affiliation(s)
- Najara Carneiro Bittencourt
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | | | - Natália Silveira Virgili
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Ana Paula Schappo
- Instituto Carlos Chagas, Fundação Oswaldo Cruz–FIOCRUZ. Curitiba, PR, Brazil
| | | | - Tamirys S. Pimenta
- Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, PA, Brazil
| | | | | | | | - João Luiz Silva-Filho
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | | | - Stefanie C. P. Lopes
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, AM, Brazil
- Instituto Leônidas & Maria Deane, FIOCRUZ-AMAZONAS, Manaus, AM, Brazil
| | - Marcus V. G. Lacerda
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, AM, Brazil
- Instituto Leônidas & Maria Deane, FIOCRUZ-AMAZONAS, Manaus, AM, Brazil
| | - Ricardo L. D. Machado
- Centro de Investigação de Microrganismos, Universidade Federal Fluminense, RJ, Brazil
| | - Fabio T. M. Costa
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Letusa Albrecht
- Instituto Carlos Chagas, Fundação Oswaldo Cruz–FIOCRUZ. Curitiba, PR, Brazil
- * E-mail: ,
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13
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Silva-Filho JL, Lacerda MVG, Recker M, Wassmer SC, Marti M, Costa FTM. Plasmodium vivax in Hematopoietic Niches: Hidden and Dangerous. Trends Parasitol 2020; 36:447-458. [PMID: 32298632 DOI: 10.1016/j.pt.2020.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/01/2020] [Accepted: 03/04/2020] [Indexed: 12/31/2022]
Abstract
Estimation of Plasmodium vivax biomass based on circulating biomarkers indicates the existence of a predominant biomass outside of the circulation that is not captured by peripheral parasitemia, in particular in patients with complicated outcomes. A series of recent studies have suggested that the hematopoietic niche of the bone marrow (BM) is a major reservoir for parasite replication and the development of transmission stages. However, significant knowledge gaps remain in our understanding of host-parasite interactions, pathophysiology, and the implications for treatment and diagnosis of such a reservoir. Here, we discuss the current status of this emerging research field in the context of P. vivax.
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Affiliation(s)
- João Luiz Silva-Filho
- Laboratório de Doenças Tropicais - Prof Luiz Jacintho da Silva Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil; Wellcome Center for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK.
| | - Marcus V G Lacerda
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, Brazil; Instituto Leônidas and Maria Deane, Fiocruz Amazônia, Manaus, Brazil
| | - Mario Recker
- Centre for Mathematics and the Environment, University of Exeter, Penryn Campus, Penryn, UK
| | - Samuel C Wassmer
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
| | - Matthias Marti
- Wellcome Center for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK.
| | - Fabio T M Costa
- Laboratório de Doenças Tropicais - Prof Luiz Jacintho da Silva Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil.
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14
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Reis AS, Barboza R, Murillo O, Barateiro A, Peixoto EPM, Lima FA, Gomes VM, Dombrowski JG, Leal VNC, Araujo F, Bandeira CL, Araujo RBD, Neres R, Souza RM, Costa FTM, Pontillo A, Bevilacqua E, Wrenger C, Wunderlich G, Palmisano G, Labriola L, Bortoluci KR, Penha-Gonçalves C, Gonçalves LA, Epiphanio S, Marinho CRF. Inflammasome activation and IL-1 signaling during placental malaria induce poor pregnancy outcomes. Sci Adv 2020; 6:eaax6346. [PMID: 32181339 PMCID: PMC7056302 DOI: 10.1126/sciadv.aax6346] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 12/11/2019] [Indexed: 05/12/2023]
Abstract
Placental malaria (PM) is associated with severe inflammation leading to abortion, preterm delivery, and intrauterine growth restriction. Innate immunity responses play critical roles, but the mechanisms underlying placental immunopathology are still unclear. Here, we investigated the role of inflammasome activation in PM by scrutinizing human placenta samples from an endemic area and ablating inflammasome components in a PM mouse model. The reduction in birth weight in babies from infected mothers is paralleled by increased placental expression of AIM2 and NLRP3 inflammasomes. Using genetic dissection, we reveal that inflammasome activation pathways are involved in the production and detrimental action of interleukin-1β (IL-1β) in the infected placenta. The IL-1R pharmacological antagonist Anakinra improved pregnancy outcomes by restoring fetal growth and reducing resorption in an experimental model. These findings unveil that IL-1β-mediated signaling is a determinant of PM pathogenesis, suggesting that IL-1R antagonists can improve clinical outcomes of malaria infection in pregnancy.
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MESH Headings
- Animals
- Caspase 1/genetics
- Caspase 1/immunology
- Cell Line
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/immunology
- Female
- Gene Expression Regulation
- Humans
- Immunity, Innate
- Immunologic Factors/pharmacology
- Inflammasomes/drug effects
- Inflammasomes/genetics
- Inflammasomes/immunology
- Interferon-gamma/genetics
- Interferon-gamma/immunology
- Interleukin 1 Receptor Antagonist Protein/pharmacology
- Interleukin-1beta/antagonists & inhibitors
- Interleukin-1beta/genetics
- Interleukin-1beta/immunology
- Malaria/drug therapy
- Malaria/genetics
- Malaria/immunology
- Malaria/parasitology
- Malaria, Falciparum/genetics
- Malaria, Falciparum/immunology
- Malaria, Falciparum/parasitology
- Malaria, Falciparum/pathology
- Mice
- Mice, Knockout
- NLR Family, Pyrin Domain-Containing 3 Protein/genetics
- NLR Family, Pyrin Domain-Containing 3 Protein/immunology
- Plasmodium berghei/immunology
- Plasmodium berghei/pathogenicity
- Plasmodium falciparum/immunology
- Plasmodium falciparum/pathogenicity
- Pregnancy
- Pregnancy Complications, Parasitic/genetics
- Pregnancy Complications, Parasitic/immunology
- Pregnancy Complications, Parasitic/parasitology
- Pregnancy Complications, Parasitic/prevention & control
- Receptors, Interleukin-1/genetics
- Receptors, Interleukin-1/immunology
- Signal Transduction/drug effects
- Signal Transduction/immunology
- THP-1 Cells
- Trophoblasts/drug effects
- Trophoblasts/immunology
- Trophoblasts/parasitology
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/immunology
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Affiliation(s)
- Aramys S. Reis
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
- Faculdade de Medicina, Centro de Ciências Sociais, Saúde e Tecnologia, Universidade Federal do Maranhão, Imperatriz, MA, Brazil
| | - Renato Barboza
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema, SP, Brazil
| | - Oscar Murillo
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - André Barateiro
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Erika P. M. Peixoto
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Flávia A. Lima
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Vinícius M. Gomes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Jamille G. Dombrowski
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Vinícius N. C. Leal
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Franciele Araujo
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Carla L. Bandeira
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Rosana B. D. Araujo
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Rita Neres
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Rodrigo M. Souza
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
- Centro Multidisciplinar, Campus Floresta, Universidade Federal do Acre, Cruzeiro do Sul, AC, Brazil
| | - Fabio T. M. Costa
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Alessandra Pontillo
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Estela Bevilacqua
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Carsten Wrenger
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Gerhard Wunderlich
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Giuseppe Palmisano
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Leticia Labriola
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Karina R. Bortoluci
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema, SP, Brazil
| | | | - Lígia A. Gonçalves
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Sabrina Epiphanio
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Claudio R. F. Marinho
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
- Corresponding author.
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15
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Kam YW, Leite JA, Amrun SN, Lum FM, Yee WX, Bakar FA, Eng KE, Lye DC, Leo YS, Chong CY, Freitas ARR, Milanez GP, Proença-Modena JL, Rénia L, Costa FTM, Ng LFP. ZIKV-Specific NS1 Epitopes as Serological Markers of Acute Zika Virus Infection. J Infect Dis 2020; 220:203-212. [PMID: 30901054 DOI: 10.1093/infdis/jiz092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 03/04/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Zika virus (ZIKV) infections have reemerged as a global health issue due to serious clinical complications. Development of specific serological assays to detect and differentiate ZIKV from other cocirculating flaviviruses for accurate diagnosis remains a challenge. METHODS We investigated antibody responses in 51 acute ZIKV-infected adult patients from Campinas, Brazil, including 7 pregnant women who later delivered during the study. Using enzyme-linked immunosorbent assays, levels of antibody response were measured and specific epitopes identified. RESULTS Several antibody-binding hot spots were identified in ZIKV immunogenic antigens, including membrane, envelope (E) and nonstructural protein 1 (NS1). Interestingly, specific epitopes (2 from E and 2 from NS1) strongly recognized by ZIKV-infected patients' antibodies were identified and were not cross-recognized by dengue virus (DENV)-infected patients' antibodies. Corresponding DENV peptides were not strongly recognized by ZIKV-infected patients' antibodies. Notably, ZIKV-infected pregnant women had specific epitope recognition for ZIKV NS1 (amino acid residues 17-34), which could be a potential serological marker for early ZIKV detection. CONCLUSIONS This study identified 6 linear ZIKV-specific epitopes for early detection of ZIKV infections. We observed differential epitope recognition between ZIKV-infected and DENV-infected patients. This information will be useful for developing diagnostic methods that differentiate between closely related flaviviruses.
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Affiliation(s)
- Yiu-Wing Kam
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Juliana Almeida Leite
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (Unicamp), Campinas, São Paulo, Brazil
| | - Siti Naqiah Amrun
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Fok-Moon Lum
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Wearn-Xin Yee
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Farhana Abu Bakar
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore.,School of Biological Sciences, Nanyang Technological University
| | - Kai Er Eng
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - David C Lye
- National Centre for Infectious Diseases.,Tan Tock Seng Hospital.,Lee Kong Chian School of Medicine, Nanyang Technological University.,Yong Loo Lin School of Medicine
| | - Yee-Sin Leo
- National Centre for Infectious Diseases.,Tan Tock Seng Hospital.,Lee Kong Chian School of Medicine, Nanyang Technological University.,Yong Loo Lin School of Medicine.,Saw Swee Hock School of Public Health, National University of Singapore
| | - Chia-Yin Chong
- Lee Kong Chian School of Medicine, Nanyang Technological University.,Yong Loo Lin School of Medicine.,KK Women's and Children's Hospital, Singapore
| | - Andre Ricardo Ribas Freitas
- Campinas Department of Public Health Surveillance. Campinas.,Sao Leopoldo Mandic Medical School. Campinas, São Paulo, Brazil
| | - Guilherme Paier Milanez
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (Unicamp), Campinas, São Paulo, Brazil
| | - Jose Luiz Proença-Modena
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (Unicamp), Campinas, São Paulo, Brazil
| | - Laurent Rénia
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Fabio T M Costa
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (Unicamp), Campinas, São Paulo, Brazil
| | - Lisa F P Ng
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore.,Institute of Infection and Global Health, University of Liverpool, United Kingdom
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16
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Neves BJ, Braga RC, Alves VM, Lima MNN, Cassiano GC, Muratov EN, Costa FTM, Andrade CH. Deep Learning-driven research for drug discovery: Tackling Malaria. PLoS Comput Biol 2020; 16:e1007025. [PMID: 32069285 PMCID: PMC7048302 DOI: 10.1371/journal.pcbi.1007025] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 02/28/2020] [Accepted: 04/15/2019] [Indexed: 11/18/2022] Open
Abstract
Malaria is an infectious disease that affects over 216 million people worldwide, killing over 445,000 patients annually. Due to the constant emergence of parasitic resistance to the current antimalarial drugs, the discovery of new drug candidates is a major global health priority. Aiming to make the drug discovery processes faster and less expensive, we developed binary and continuous Quantitative Structure-Activity Relationships (QSAR) models implementing deep learning for predicting antiplasmodial activity and cytotoxicity of untested compounds. Then, we applied the best models for a virtual screening of a large database of chemical compounds. The top computational predictions were evaluated experimentally against asexual blood stages of both sensitive and multi-drug-resistant Plasmodium falciparum strains. Among them, two compounds, LabMol-149 and LabMol-152, showed potent antiplasmodial activity at low nanomolar concentrations (EC50 <500 nM) and low cytotoxicity in mammalian cells. Therefore, the computational approach employing deep learning developed here allowed us to discover two new families of potential next generation antimalarial agents, which are in compliance with the guidelines and criteria for antimalarial target candidates.
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Affiliation(s)
- Bruno J. Neves
- Laboratory of Cheminformatics, University Center of Anápolis – UniEVANGÉLICA, Anápolis, Goiás, Brazil
- LabMol – Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Goiás, Brazil
| | | | - Vinicius M. Alves
- LabMol – Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Goiás, Brazil
- Laboratory for Molecular Modeling, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Marília N. N. Lima
- LabMol – Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Gustavo C. Cassiano
- Laboratory of Tropical Diseases–Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisboa, Portugal
| | - Eugene N. Muratov
- Laboratory for Molecular Modeling, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Department of Chemical Technology, Odessa National Polytechnic University, Odessa, Ukraine
| | - Fabio T. M. Costa
- Laboratory of Tropical Diseases–Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Carolina Horta Andrade
- LabMol – Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Goiás, Brazil
- Laboratory of Tropical Diseases–Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
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17
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Lima MNN, Cassiano GC, Tomaz KCP, Silva AC, Sousa BKP, Ferreira LT, Tavella TA, Calit J, Bargieri DY, Neves BJ, Costa FTM, Andrade CH. Integrative Multi-Kinase Approach for the Identification of Potent Antiplasmodial Hits. Front Chem 2019; 7:773. [PMID: 31824917 PMCID: PMC6881481 DOI: 10.3389/fchem.2019.00773] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 10/25/2019] [Indexed: 11/22/2022] Open
Abstract
Malaria is a tropical infectious disease that affects over 219 million people worldwide. Due to the constant emergence of parasitic resistance to the current antimalarial drugs, the discovery of new antimalarial drugs is a global health priority. Multi-target drug discovery is a promising and innovative strategy for drug discovery and it is currently regarded as one of the best strategies to face drug resistance. Aiming to identify new multi-target antimalarial drug candidates, we developed an integrative computational approach to select multi-kinase inhibitors for Plasmodium falciparum calcium-dependent protein kinases 1 and 4 (CDPK1 and CDPK4) and protein kinase 6 (PK6). For this purpose, we developed and validated shape-based and machine learning models to prioritize compounds for experimental evaluation. Then, we applied the best models for virtual screening of a large commercial database of drug-like molecules. Ten computational hits were experimentally evaluated against asexual blood stages of both sensitive and multi-drug resistant P. falciparum strains. Among them, LabMol-171, LabMol-172, and LabMol-181 showed potent antiplasmodial activity at nanomolar concentrations (EC50 ≤ 700 nM) and selectivity indices >15 folds. In addition, LabMol-171 and LabMol-181 showed good in vitro inhibition of P. berghei ookinete formation and therefore represent promising transmission-blocking scaffolds. Finally, docking studies with protein kinases CDPK1, CDPK4, and PK6 showed structural insights for further hit-to-lead optimization studies.
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Affiliation(s)
- Marilia N N Lima
- LabMol-Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Gustavo C Cassiano
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Kaira C P Tomaz
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Arthur C Silva
- LabMol-Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Bruna K P Sousa
- LabMol-Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Leticia T Ferreira
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Tatyana A Tavella
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Juliana Calit
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Daniel Y Bargieri
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Bruno J Neves
- Laboratory of Cheminformatics, University Center of Anápolis/UniEVANGELICA, Anápolis, Brazil
| | - Fabio T M Costa
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Carolina Horta Andrade
- LabMol-Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil.,Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
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18
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Ferreira L, Venancio VP, Kawano T, Abrão LCC, Tavella TA, Almeida LD, Pires GS, Bilsland E, Sunnerhagen P, Azevedo L, Talcott ST, Mertens-Talcott SU, Costa FTM. Chemical Genomic Profiling Unveils the in Vitro and in Vivo Antiplasmodial Mechanism of Açaí ( Euterpe oleracea Mart.) Polyphenols. ACS Omega 2019; 4:15628-15635. [PMID: 31572864 PMCID: PMC6761757 DOI: 10.1021/acsomega.9b02127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
Malaria remains a major detrimental parasitic disease in the developing world, with more than 200 million cases annually. Widespread drug-resistant parasite strains push for the development of novel antimalarial drugs. Plant-derived natural products are key sources of antimalarial molecules. Euterpe oleracea Martius ("açaí") originates from Brazil and has anti-inflammatory and antineoplasic properties. Here, we evaluated the antimalarial efficacy of three phenolic fractions of açaí; total phenolics (1), nonanthocyanin phenolics (2), and total anthocyanins (3). In vitro, fraction 2 moderately inhibited parasite growth in chloroquine-sensitive (HB3) and multiresistant (Dd2) Plasmodium falciparum strains, while none of the fractions was toxic to noncancer cells. Despite the limited activity in vitro, the oral treatment with 20 mg/kg of fraction 1 reduced parasitemia by 89.4% in Plasmodium chabaudi-infected mice and prolonged survival. Contrasting in vitro and in vivo activities of 1 suggest key antiplasmodial roles for polyphenol metabolites rather than the fraction itself. Finally, we performed haploinsufficiency chemical genomic profiling (HIP) utilizing heterozygous Saccharomyces cerevisiae deletion mutants to identify molecular mechanisms of açaí fractions. HIP results indicate proteostasis as the main cellular pathway affected by fraction 2. These results open avenues to develop açaí polyphenols as potential new antimalarial candidates.
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Affiliation(s)
- Letícia
T. Ferreira
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da
Silva, Department of Genetics, Evolution, Microbiology and Immunology and Synthetic Biology Laboratory, Department of Structural and Functional
Biology, Institute of Biology, University
of Campinas—UNICAMP, Campinas, SP 13083-970, Brazil
| | - Vinícius P. Venancio
- Department
of Nutrition and Food Science, Texas A&M
University, College
Station, Texas 77843, United States
| | - Taila Kawano
- Department
of Nutrition and Food Science, Texas A&M
University, College
Station, Texas 77843, United States
- Faculty
of Pharmaceutical Sciences, Federal University
of Alfenas, Alfenas, MG 37130-001, Brazil
| | - Lailah C. C. Abrão
- Department
of Nutrition and Food Science, Texas A&M
University, College
Station, Texas 77843, United States
- Faculty
of Pharmaceutical Sciences, Federal University
of Alfenas, Alfenas, MG 37130-001, Brazil
| | - Tatyana A. Tavella
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da
Silva, Department of Genetics, Evolution, Microbiology and Immunology and Synthetic Biology Laboratory, Department of Structural and Functional
Biology, Institute of Biology, University
of Campinas—UNICAMP, Campinas, SP 13083-970, Brazil
| | - Ludimila D. Almeida
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da
Silva, Department of Genetics, Evolution, Microbiology and Immunology and Synthetic Biology Laboratory, Department of Structural and Functional
Biology, Institute of Biology, University
of Campinas—UNICAMP, Campinas, SP 13083-970, Brazil
| | - Gabriel S. Pires
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da
Silva, Department of Genetics, Evolution, Microbiology and Immunology and Synthetic Biology Laboratory, Department of Structural and Functional
Biology, Institute of Biology, University
of Campinas—UNICAMP, Campinas, SP 13083-970, Brazil
| | - Elizabeth Bilsland
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da
Silva, Department of Genetics, Evolution, Microbiology and Immunology and Synthetic Biology Laboratory, Department of Structural and Functional
Biology, Institute of Biology, University
of Campinas—UNICAMP, Campinas, SP 13083-970, Brazil
| | - Per Sunnerhagen
- Department
of Chemistry and Molecular Biology, University
of Gothenburg, Gothenburg SE-405 30, Sweden
| | - Luciana Azevedo
- Laboratory
of Nutritional and Toxicological Analysis in Vivo—LANTIN, Faculty
of Nutrition, Federal University of Alfenas, Alfenas, MG, Brazil
| | - Stephen T. Talcott
- Department
of Nutrition and Food Science, Texas A&M
University, College
Station, Texas 77843, United States
| | - Susanne U. Mertens-Talcott
- Department
of Nutrition and Food Science, Texas A&M
University, College
Station, Texas 77843, United States
| | - Fabio T. M. Costa
- Laboratory
of Tropical Diseases—Prof. Dr. Luiz Jacintho da
Silva, Department of Genetics, Evolution, Microbiology and Immunology and Synthetic Biology Laboratory, Department of Structural and Functional
Biology, Institute of Biology, University
of Campinas—UNICAMP, Campinas, SP 13083-970, Brazil
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19
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Bittencourt NC, Leite JA, Silva ABIE, Pimenta TS, Silva-Filho JL, Cassiano GC, Lopes SCP, Dos-Santos JCK, Bourgard C, Nakaya HI, da Silva Ventura AMR, Lacerda MVG, Ferreira MU, Machado RLD, Albrecht L, Costa FTM. Genetic sequence characterization and naturally acquired immune response to Plasmodium vivax Rhoptry Neck Protein 2 (PvRON2). Malar J 2018; 17:401. [PMID: 30382855 PMCID: PMC6208078 DOI: 10.1186/s12936-018-2543-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 10/22/2018] [Indexed: 12/28/2022] Open
Abstract
Background The genetic diversity of malaria antigens often results in allele variant-specific immunity, imposing a great challenge to vaccine development. Rhoptry Neck Protein 2 (PvRON2) is a blood-stage antigen that plays a key role during the erythrocyte invasion of Plasmodium vivax. This study investigates the genetic diversity of PvRON2 and the naturally acquired immune response to P. vivax isolates. Results Here, the genetic diversity of PvRON21828–2080 and the naturally acquired humoral immune response against PvRON21828–2080 in infected and non-infected individuals from a vivax malaria endemic area in Brazil was reported. The diversity analysis of PvRON21828–2080 revealed that the protein is conserved in isolates in Brazil and worldwide. A total of 18 (19%) patients had IgG antibodies to PvRON21828–2080. Additionally, the analysis of the antibody response in individuals who were not acutely infected with malaria, but had been infected with malaria in the past indicated that 32 patients (33%) exhibited an IgG immune response against PvRON2. Conclusions PvRON2 was conserved among the studied isolates. The presence of naturally acquired antibodies to this protein in the absence of the disease suggests that PvRON2 induces a long-term antibody response. These results indicate that PvRON2 is a potential malaria vaccine candidate. Electronic supplementary material The online version of this article (10.1186/s12936-018-2543-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Najara C Bittencourt
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Juliana A Leite
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | | | - Tamirys S Pimenta
- Laboratório de Ensaios Clínicos e Imunogenética em Malária, Instituto Evandro Chagas/SVS/MS, Ananindeua, PA, Brazil
| | - João Luiz Silva-Filho
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Gustavo C Cassiano
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Stefanie C P Lopes
- Instituto Leônidas & Maria Deane, Fundação Oswaldo Cruz - FIOCRUZ, Manaus, AM, Brazil.,Fundação de Medicina Tropical-Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
| | - Joao C K Dos-Santos
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Catarina Bourgard
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Helder I Nakaya
- School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Marcus V G Lacerda
- Instituto Leônidas & Maria Deane, Fundação Oswaldo Cruz - FIOCRUZ, Manaus, AM, Brazil.,Fundação de Medicina Tropical-Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
| | - Marcelo U Ferreira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo-USP, São Paulo, Brazil
| | - Ricardo L D Machado
- Laboratório de Ensaios Clínicos e Imunogenética em Malária, Instituto Evandro Chagas/SVS/MS, Ananindeua, PA, Brazil
| | - Letusa Albrecht
- Instituto Carlos Chagas, Fundação Oswaldo Cruz - FIOCRUZ, Curitiba, PR, Brazil.
| | - Fabio T M Costa
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil.
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20
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Mottin M, Borba JVVB, Braga RC, Torres PHM, Martini MC, Proenca-Modena JL, Judice CC, Costa FTM, Ekins S, Perryman AL, Horta Andrade C. The A-Z of Zika drug discovery. Drug Discov Today 2018; 23:1833-1847. [PMID: 29935345 PMCID: PMC7108251 DOI: 10.1016/j.drudis.2018.06.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/23/2018] [Accepted: 06/14/2018] [Indexed: 02/07/2023]
Abstract
Despite the recent outbreak of Zika virus (ZIKV), there are still no approved treatments, and early-stage compounds are probably many years away from approval. A comprehensive A-Z review of the recent advances in ZIKV drug discovery efforts is presented, highlighting drug repositioning and computationally guided compounds, including discovered viral and host cell inhibitors. Promising ZIKV molecular targets are also described and discussed, as well as targets belonging to the host cell, as new opportunities for ZIKV drug discovery. All this knowledge is not only crucial to advancing the fight against the Zika virus and other flaviviruses but also helps us prepare for the next emerging virus outbreak to which we will have to respond.
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Affiliation(s)
- Melina Mottin
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculdade de Farmacia, Universidade Federal de Goias - UFG, Goiânia, GO 74605-170, Brazil
| | - Joyce V V B Borba
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculdade de Farmacia, Universidade Federal de Goias - UFG, Goiânia, GO 74605-170, Brazil
| | - Rodolpho C Braga
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculdade de Farmacia, Universidade Federal de Goias - UFG, Goiânia, GO 74605-170, Brazil
| | - Pedro H M Torres
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ 21040-900, Brazil; Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK
| | - Matheus C Martini
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, SP 13083-864, Brazil
| | - Jose Luiz Proenca-Modena
- Laboratory of Emerging Viruses (LEVE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, SP 13083-864, Brazil
| | - Carla C Judice
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, SP 13083-864, Brazil
| | - Fabio T M Costa
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, SP 13083-864, Brazil
| | - Sean Ekins
- Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC 27606, USA
| | - Alexander L Perryman
- Department of Pharmacology, Physiology and Neuroscience, Rutgers University-New Jersey Medical School, Newark, NJ 07103, USA
| | - Carolina Horta Andrade
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculdade de Farmacia, Universidade Federal de Goias - UFG, Goiânia, GO 74605-170, Brazil; Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, SP 13083-864, Brazil.
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21
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Bilsland E, Tavella TA, Krogh R, Stokes JE, Roberts A, Ajioka J, Spring DR, Andricopulo AD, Costa FTM, Oliver SG. Antiplasmodial and trypanocidal activity of violacein and deoxyviolacein produced from synthetic operons. BMC Biotechnol 2018; 18:22. [PMID: 29642881 PMCID: PMC5896143 DOI: 10.1186/s12896-018-0428-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 03/15/2018] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Violacein is a deep violet compound that is produced by a number of bacterial species. It is synthesized from tryptophan by a pathway that involves the sequential action of 5 different enzymes (encoded by genes vioA to vioE). Violacein has antibacterial, antiparasitic, and antiviral activities, and also has the potential of inducing apoptosis in certain cancer cells. RESULTS Here, we describe the construction of a series of plasmids harboring the complete or partial violacein biosynthesis operon and their use to enable production of violacein and deoxyviolacein in E.coli. We performed in vitro assays to determine the biological activity of these compounds against Plasmodium, Trypanosoma, and mammalian cells. We found that, while deoxyviolacein has a lower activity against parasites than violacein, its toxicity to mammalian cells is insignificant compared to that of violacein. CONCLUSIONS We constructed E. coli strains capable of producing biologically active violacein and related compounds, and propose that deoxyviolacein might be a useful starting compound for the development of antiparasite drugs.
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Affiliation(s)
- Elizabeth Bilsland
- 0000000121885934grid.5335.0Cambridge Systems Biology Centre and Department of Biochemistry, University of Cambridge, Cambridge, UK ,0000 0001 0723 2494grid.411087.bDepartment of Structural and Functional Biology, Institute of Biology, UNICAMP, Campinas, SP Brazil ,0000 0001 0723 2494grid.411087.bLaboratory of Tropical Diseases – Prof. Dr. Luiz Jacintho da Silva - Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, SP Brazil
| | - Tatyana A. Tavella
- 0000 0001 0723 2494grid.411087.bLaboratory of Tropical Diseases – Prof. Dr. Luiz Jacintho da Silva - Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, SP Brazil
| | - Renata Krogh
- 0000 0004 1937 0722grid.11899.38Laboratory of Medicinal and Computational Chemistry, University of São Paulo, São Carlos, SP Brazil
| | - Jamie E. Stokes
- 0000000121885934grid.5335.0Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Annabelle Roberts
- 0000000121885934grid.5335.0Cambridge Systems Biology Centre and Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - James Ajioka
- 0000000121885934grid.5335.0Department of Pathology, University of Cambridge, Cambridge, UK
| | - David R. Spring
- 0000000121885934grid.5335.0Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Adriano D. Andricopulo
- 0000 0004 1937 0722grid.11899.38Laboratory of Medicinal and Computational Chemistry, University of São Paulo, São Carlos, SP Brazil
| | - Fabio T. M. Costa
- 0000 0001 0723 2494grid.411087.bLaboratory of Tropical Diseases – Prof. Dr. Luiz Jacintho da Silva - Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, SP Brazil
| | - Stephen G. Oliver
- 0000000121885934grid.5335.0Cambridge Systems Biology Centre and Department of Biochemistry, University of Cambridge, Cambridge, UK
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22
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Bastos MF, Kayano ACAV, Silva-Filho JL, Dos-Santos JCK, Judice C, Blanco YC, Shryock N, Sercundes MK, Ortolan LS, Francelin C, Leite JA, Oliveira R, Elias RM, Câmara NOS, Lopes SCP, Albrecht L, Farias AS, Vicente CP, Werneck CC, Giorgio S, Verinaud L, Epiphanio S, Marinho CRF, Lalwani P, Amino R, Aliberti J, Costa FTM. Inhibition of hypoxia-associated response and kynurenine production in response to hyperbaric oxygen as mechanisms involved in protection against experimental cerebral malaria. FASEB J 2018; 32:4470-4481. [PMID: 29558201 DOI: 10.1096/fj.201700844r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cerebral malaria (CM) is a multifactorial syndrome involving an exacerbated proinflammatory status, endothelial cell activation, coagulopathy, hypoxia, and accumulation of leukocytes and parasites in the brain microvasculature. Despite significant improvements in malaria control, 15% of mortality is still observed in CM cases, and 25% of survivors develop neurologic sequelae for life-even after appropriate antimalarial therapy. A treatment that ameliorates CM clinical signs, resulting in complete healing, is urgently needed. Previously, we showed a hyperbaric oxygen (HBO)-protective effect against experimental CM. Here, we provide molecular evidence that HBO targets brain endothelial cells by decreasing their activation and inhibits parasite and leukocyte accumulation, thus improving cerebral microcirculatory blood flow. HBO treatment increased the expression of aryl hydrocarbon receptor over hypoxia-inducible factor 1-α (HIF-1α), an oxygen-sensitive cytosolic receptor, along with decreased indoleamine 2,3-dioxygenase 1 expression and kynurenine levels. Moreover, ablation of HIF-1α expression in endothelial cells in mice conferred protection against CM and improved survival. We propose that HBO should be pursued as an adjunctive therapy in CM patients to prolong survival and diminish deleterious proinflammatory reaction. Furthermore, our data support the use of HBO in therapeutic strategies to improve outcomes of non-CM disorders affecting the brain.-Bastos, M. F., Kayano, A. C. A. V., Silva-Filho, J. L., Dos-Santos, J. C. K., Judice, C., Blanco, Y. C., Shryock, N., Sercundes, M. K., Ortolan, L. S., Francelin, C., Leite, J. A., Oliveira, R., Elias, R. M., Câmara, N. O. S., Lopes, S. C. P., Albrecht, L., Farias, A. S., Vicente, C. P., Werneck, C. C., Giorgio, S., Verinaud, L., Epiphanio, S., Marinho, C. R. F., Lalwani, P., Amino, R., Aliberti, J., Costa, F. T. M. Inhibition of hypoxia-associated response and kynurenine production in response to hyperbaric oxygen as mechanisms involved in protection against experimental cerebral malaria.
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Affiliation(s)
- Marcele F Bastos
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Ana Carolina A V Kayano
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - João Luiz Silva-Filho
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - João Conrado K Dos-Santos
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Carla Judice
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Yara C Blanco
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Nathaniel Shryock
- Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Michelle K Sercundes
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | - Luana S Ortolan
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | - Carolina Francelin
- Department of Functional and Structural Biology, University of Campinas, Campinas, Brazil
| | - Juliana A Leite
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Rafaella Oliveira
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, Brazil
| | - Rosa M Elias
- Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Niels O S Câmara
- Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Stefanie C P Lopes
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil.,Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, Brazil
| | - Letusa Albrecht
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil.,Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, Brazil
| | - Alessandro S Farias
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
| | - Cristina P Vicente
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | - Claudio C Werneck
- Department of Biochemistry and Tissue Biology, University of Campinas, Campinas, Brazil
| | - Selma Giorgio
- Department of Animal Biology, University of Campinas, Campinas, Brazil
| | - Liana Verinaud
- Department of Functional and Structural Biology, University of Campinas, Campinas, Brazil
| | - Sabrina Epiphanio
- Department of Clinical and Toxicological Analyses, University of São Paulo, São Paulo, Brazil
| | | | - Pritesh Lalwani
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, Brazil
| | - Rogerio Amino
- Unit of Malaria Infection and Immunity, Institut Pasteur, Paris, France
| | - Julio Aliberti
- Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Extramural Activities, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Fabio T M Costa
- Department of Genetics, Evolution, Microbiology, and Immunology, Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, University of Campinas, Campinas, Brazil
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23
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Lima MNN, Melo-Filho CC, Cassiano GC, Neves BJ, Alves VM, Braga RC, Cravo PVL, Muratov EN, Calit J, Bargieri DY, Costa FTM, Andrade CH. QSAR-Driven Design and Discovery of Novel Compounds With Antiplasmodial and Transmission Blocking Activities. Front Pharmacol 2018; 9:146. [PMID: 29559909 PMCID: PMC5845645 DOI: 10.3389/fphar.2018.00146] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/12/2018] [Indexed: 11/13/2022] Open
Abstract
Malaria is a life-threatening infectious disease caused by parasites of the genus Plasmodium, affecting more than 200 million people worldwide every year and leading to about a half million deaths. Malaria parasites of humans have evolved resistance to all current antimalarial drugs, urging for the discovery of new effective compounds. Given that the inhibition of deoxyuridine triphosphatase of Plasmodium falciparum (PfdUTPase) induces wrong insertions in plasmodial DNA and consequently leading the parasite to death, this enzyme is considered an attractive antimalarial drug target. Using a combi-QSAR (quantitative structure-activity relationship) approach followed by virtual screening and in vitro experimental evaluation, we report herein the discovery of novel chemical scaffolds with in vitro potency against asexual blood stages of both P. falciparum multidrug-resistant and sensitive strains and against sporogonic development of P. berghei. We developed 2D- and 3D-QSAR models using a series of nucleosides reported in the literature as PfdUTPase inhibitors. The best models were combined in a consensus approach and used for virtual screening of the ChemBridge database, leading to the identification of five new virtual PfdUTPase inhibitors. Further in vitro testing on P. falciparum multidrug-resistant (W2) and sensitive (3D7) parasites showed that compounds LabMol-144 and LabMol-146 demonstrated fair activity against both strains and presented good selectivity versus mammalian cells. In addition, LabMol-144 showed good in vitro inhibition of P. berghei ookinete formation, demonstrating that hit-to-lead optimization based on this compound may also lead to new antimalarials with transmission blocking activity.
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Affiliation(s)
- Marilia N N Lima
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Cleber C Melo-Filho
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Gustavo C Cassiano
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, Brazil
| | - Bruno J Neves
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil.,Laboratory of Cheminformatics, PPG-SOMA, University Center of Anápolis/UniEVANGELICA, Anápolis, Brazil
| | - Vinicius M Alves
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Rodolpho C Braga
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
| | - Pedro V L Cravo
- Global Health and Tropical Medicine Centre, Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Eugene N Muratov
- Laboratory for Molecular Modeling, Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Chemical Technology, Odessa National Polytechnic University, Odessa, Ukraine
| | - Juliana Calit
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Daniel Y Bargieri
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Fabio T M Costa
- Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, Brazil
| | - Carolina H Andrade
- LabMol - Laboratory for Molecular Modeling and Drug Design, Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil.,Laboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, Brazil
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24
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Bourgard C, Albrecht L, Kayano ACAV, Sunnerhagen P, Costa FTM. Plasmodium vivax Biology: Insights Provided by Genomics, Transcriptomics and Proteomics. Front Cell Infect Microbiol 2018; 8:34. [PMID: 29473024 PMCID: PMC5809496 DOI: 10.3389/fcimb.2018.00034] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/25/2018] [Indexed: 12/17/2022] Open
Abstract
During the last decade, the vast omics field has revolutionized biological research, especially the genomics, transcriptomics and proteomics branches, as technological tools become available to the field researcher and allow difficult question-driven studies to be addressed. Parasitology has greatly benefited from next generation sequencing (NGS) projects, which have resulted in a broadened comprehension of basic parasite molecular biology, ecology and epidemiology. Malariology is one example where application of this technology has greatly contributed to a better understanding of Plasmodium spp. biology and host-parasite interactions. Among the several parasite species that cause human malaria, the neglected Plasmodium vivax presents great research challenges, as in vitro culturing is not yet feasible and functional assays are heavily limited. Therefore, there are gaps in our P. vivax biology knowledge that affect decisions for control policies aiming to eradicate vivax malaria in the near future. In this review, we provide a snapshot of key discoveries already achieved in P. vivax sequencing projects, focusing on developments, hurdles, and limitations currently faced by the research community, as well as perspectives on future vivax malaria research.
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Affiliation(s)
- Catarina Bourgard
- Laboratory of Tropical Diseases, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas - UNICAMP, Campinas, Brazil
| | - Letusa Albrecht
- Laboratory of Tropical Diseases, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas - UNICAMP, Campinas, Brazil.,Laboratory of Regulation of Gene Expression, Instituto Carlos Chagas, Curitiba, Brazil
| | - Ana C A V Kayano
- Laboratory of Tropical Diseases, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas - UNICAMP, Campinas, Brazil
| | - Per Sunnerhagen
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Fabio T M Costa
- Laboratory of Tropical Diseases, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas - UNICAMP, Campinas, Brazil
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25
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Cravo P, Machado RB, Leite JA, Leda T, Suwanarusk R, Bittencourt N, Albrecht L, Judice C, Lopes SCP, Lacerda MVG, Ferreira MU, Soares IS, Goh YS, Bargieri DY, Nosten F, Russell B, Rénia L, Costa FTM. In silico epitope mapping and experimental evaluation of the Merozoite Adhesive Erythrocytic Binding Protein (MAEBL) as a malaria vaccine candidate. Malar J 2018; 17:20. [PMID: 29316918 PMCID: PMC5761135 DOI: 10.1186/s12936-017-2144-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 12/18/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Technical limitations for culturing the human malaria parasite Plasmodium vivax have impaired the discovery of vaccine candidates, challenging the malaria eradication agenda. The immunogenicity of the M2 domain of the Merozoite Adhesive Erythrocytic Binding Protein (MAEBL) antigen cloned from the Plasmodium yoelii murine parasite, has been previously demonstrated. RESULTS Detailed epitope mapping of MAEBL through immunoinformatics identified several MHCI, MHCII and B cell epitopes throughout the peptide, with several of these lying in the M2 domain and being conserved between P. vivax, P. yoelii and Plasmodium falciparum, hinting that the M2-MAEBL is pan-reactive. This hypothesis was tested through functional assays, showing that P. yoelii M2-MAEBL antisera are able to recognize and inhibit erythrocyte invasion from both P. falciparum and P. vivax parasites isolated from Thai patients, in ex vivo assays. Moreover, the sequence of the M2-MAEBL is shown to be highly conserved between P. vivax isolates from the Amazon and Thailand, indicating that the MAEBL antigen may constitute a vaccine candidate outwitting strain-specific immunity. CONCLUSIONS The MAEBL antigen is promising candidate towards the development of a malaria vaccine.
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Affiliation(s)
- Pedro Cravo
- Global Health and Tropical Medicine Centre (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa, Rua da Junqueira, nº 100, 1349-008, Lisbon, Portugal. .,GenoBio, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil. .,PPG-SOMA, Centro Universitário de Anápolis, Anápolis, GO, Brazil.
| | - Renato B Machado
- GenoBio, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Juliana A Leite
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Taizy Leda
- GenoBio, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Rossarin Suwanarusk
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Najara Bittencourt
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Letusa Albrecht
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil.,Instituto Carlos Chagas, Fundação Oswaldo Cruz-FIOCRUZ, Curitiba, PR, Brazil
| | - Carla Judice
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Stefanie C P Lopes
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil.,Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz-FIOCRUZ, Manaus, AM, Brazil
| | - Marcus V G Lacerda
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz-FIOCRUZ, Manaus, AM, Brazil.,Fundação de Medicina Tropical-Dr. Heitor Vieira Dourado, Gerência de Malária, Manaus, AM, Brazil
| | - Marcelo U Ferreira
- Department of Parasitology, University of São Paulo-USP, São Paulo, SP, Brazil
| | - Irene S Soares
- Department of Clinical and Toxicological Analyses, Pharmaceutical Sciences, University of São Paulo-USP, São Paulo, SP, Brazil
| | - Yun Shan Goh
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Daniel Y Bargieri
- Department of Parasitology, University of São Paulo-USP, São Paulo, SP, Brazil
| | - François Nosten
- Shoklo Malaria Research Unit, Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | - Bruce Russell
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Laurent Rénia
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Fabio T M Costa
- Laboratory of Tropical Diseases-Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas-UNICAMP, Campinas, SP, Brazil
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26
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Pádua TA, Torres ND, Candéa ALP, Costa MFS, Silva JD, Silva‐Filho JL, Costa FTM, Rocco PRM, Souza MC, Henriques MG. Therapeutic effect of Lipoxin A
4
in malaria‐induced acute lung injury. J Leukoc Biol 2018; 103:657-670. [DOI: 10.1002/jlb.3a1016-435rrr] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 05/29/2017] [Accepted: 10/23/2017] [Indexed: 01/04/2023] Open
Affiliation(s)
- Tatiana A. Pádua
- Laboratory of Applied PharmacologyFarmanguinhos, Oswaldo Cruz Foundation Rio de Janeiro Brazil
- National Institute of Science and Technology of Innovation on Diseases of Neglected Populations (INCT‐IDPN) FIOCRUZ Rio de Janeiro Brazil
| | - Natalia D. Torres
- Laboratory of Applied PharmacologyFarmanguinhos, Oswaldo Cruz Foundation Rio de Janeiro Brazil
- National Institute of Science and Technology of Innovation on Diseases of Neglected Populations (INCT‐IDPN) FIOCRUZ Rio de Janeiro Brazil
| | - André L. P. Candéa
- Laboratory of Applied PharmacologyFarmanguinhos, Oswaldo Cruz Foundation Rio de Janeiro Brazil
- National Institute of Science and Technology of Innovation on Diseases of Neglected Populations (INCT‐IDPN) FIOCRUZ Rio de Janeiro Brazil
| | - Maria Fernanda Souza Costa
- Laboratory of Applied PharmacologyFarmanguinhos, Oswaldo Cruz Foundation Rio de Janeiro Brazil
- National Institute of Science and Technology of Innovation on Diseases of Neglected Populations (INCT‐IDPN) FIOCRUZ Rio de Janeiro Brazil
| | - Johnatas D. Silva
- Laboratory of Pulmonary InvestigationCarlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro Rio de Janeiro Brazil
| | - João Luiz Silva‐Filho
- Laboratory of Tropical Diseases – Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution and Bioagents, Institute of Biology (IB)University of Campinas (UNICAMP) Campinas Brazil
| | - Fabio T. M. Costa
- Laboratory of Tropical Diseases – Prof. Dr. Luiz Jacintho da Silva, Department of Genetics, Evolution and Bioagents, Institute of Biology (IB)University of Campinas (UNICAMP) Campinas Brazil
| | - Patricia R. M. Rocco
- Laboratory of Pulmonary InvestigationCarlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Mariana C. Souza
- Laboratory of Applied PharmacologyFarmanguinhos, Oswaldo Cruz Foundation Rio de Janeiro Brazil
- National Institute of Science and Technology of Innovation on Diseases of Neglected Populations (INCT‐IDPN) FIOCRUZ Rio de Janeiro Brazil
| | - Maria G. Henriques
- Laboratory of Applied PharmacologyFarmanguinhos, Oswaldo Cruz Foundation Rio de Janeiro Brazil
- National Institute of Science and Technology of Innovation on Diseases of Neglected Populations (INCT‐IDPN) FIOCRUZ Rio de Janeiro Brazil
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27
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Kam YW, Leite JA, Lum FM, Tan JJL, Lee B, Judice CC, Teixeira DADT, Andreata-Santos R, Vinolo MA, Angerami R, Resende MR, Freitas ARR, Amaral E, Junior RP, Costa ML, Guida JP, Arns CW, Ferreira LCS, Rénia L, Proença-Modena JL, Ng LFP, Costa FTM. Specific Biomarkers Associated With Neurological Complications and Congenital Central Nervous System Abnormalities From Zika Virus-Infected Patients in Brazil. J Infect Dis 2017; 216:172-181. [PMID: 28838147 PMCID: PMC5853428 DOI: 10.1093/infdis/jix261] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/26/2017] [Indexed: 12/13/2022] Open
Abstract
Background Zika virus (ZIKV) infections have been linked to different levels of clinical outcomes, ranging from mild rash and fever to severe neurological complications and congenital malformations. Methods We investigated the clinical and immunological response, focusing on the immune mediators profile in 95 acute ZIKV-infected adult patients from Campinas, Brazil. These patients included 6 pregnant women who later delivered during the course of this study. Clinical observations were recorded during hospitalization. Levels of 45 immune mediators were quantified using multiplex microbead-based immunoassays. Results Whereas 11.6% of patients had neurological complications, 88.4% displayed mild disease of rash and fever. Several immune mediators were specifically higher in ZIKV-infected patients, and levels of interleukin 10, interferon gamma-induced protein 10 (IP-10), and hepatocyte growth factor differentiated between patients with or without neurological complications. Interestingly, higher levels of interleukin 22, monocyte chemoattractant protein 1, TNF-α, and IP-10 were observed in ZIKV-infected pregnant women carrying fetuses with fetal growth–associated malformations. Notably, infants with congenital central nervous system deformities had significantly higher levels of interleukin 18 and IP-10 but lower levels of hepatocyte growth factor than those without such abnormalities born to ZIKV-infected mothers. Conclusions This study identified several key markers for the control of ZIKV pathogenesis. This will allow a better understanding of the molecular mechanisms of ZIKV infection in patients.
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Affiliation(s)
- Yiu-Wing Kam
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR)
| | - Juliana Almeida Leite
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (Unicamp), São Paulo
| | - Fok-Moon Lum
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR)
| | - Jeslin J L Tan
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR)
| | - Bernett Lee
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR)
| | - Carla C Judice
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (Unicamp), São Paulo
| | | | | | - Marco A Vinolo
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (Unicamp), São Paulo
| | | | | | | | - Eliana Amaral
- Campinas Department of Public Health Surveillance, Brazil
| | | | | | | | - Clarice Weis Arns
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (Unicamp), São Paulo
| | | | - Laurent Rénia
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR)
| | - Jose Luiz Proença-Modena
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (Unicamp), São Paulo
| | - Lisa F P Ng
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR).,Institute of Infection and Global Health, University of Liverpool, United Kingdom
| | - Fabio T M Costa
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (Unicamp), São Paulo
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28
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Hung J, Lopes SCP, Nery OA, Nosten F, Ferreira MU, Duraisingh MT, Marti M, Ravel D, Rangel G, Malleret B, Lacerda MVG, Rénia L, Costa FTM, Carpenter AE. Applying Faster R-CNN for Object Detection on Malaria Images. Conf Comput Vis Pattern Recognit Workshops 2017; 2017:808-813. [PMID: 34938593 PMCID: PMC8691760 DOI: 10.1109/cvprw.2017.112] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Deep learning based models have had great success in object detection, but the state of the art models have not yet been widely applied to biological image data. We apply for the first time an object detection model previously used on natural images to identify cells and recognize their stages in brightfield microscopy images of malaria-infected blood. Many micro-organisms like malaria parasites are still studied by expert manual inspection and hand counting. This type of object detection task is challenging due to factors like variations in cell shape, density, and color, and uncertainty of some cell classes. In addition, annotated data useful for training is scarce, and the class distribution is inherently highly imbalanced due to the dominance of uninfected red blood cells. We use Faster Region-based Convolutional Neural Network (Faster R-CNN), one of the top performing object detection models in recent years, pre-trained on ImageNet but fine tuned with our data, and compare it to a baseline, which is based on a traditional approach consisting of cell segmentation, extraction of several single-cell features, and classification using random forests. To conduct our initial study, we collect and label a dataset of 1300 fields of view consisting of around 100,000 individual cells. We demonstrate that Faster R-CNN outperforms our baseline and put the results in context of human performance.
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Affiliation(s)
- Jane Hung
- Massachusetts Institute of Technology
| | - Stefanie C P Lopes
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz (FIOCRUZ); Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária
| | | | - Francois Nosten
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford
| | | | | | - Matthias Marti
- Wellcome Trust Center for Molecular Parasitology, University of Glasgow
| | | | | | - Benoit Malleret
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore; Singapore Immunology Network (SIgN), Agency for Science & Technology
| | - Marcus V G Lacerda
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Gerência de Malária
| | - Laurent Rénia
- Singapore Immunology Network (SIgN), Agency for Science & Technology (ASTAR)
| | - Fabio T M Costa
- Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas
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Siqueira AM, Mesones-Lapouble O, Marchesini P, Sampaio VDS, Brasil P, Tauil PL, Fontes CJ, Costa FTM, Daniel-Ribeiro CT, Lacerda MVG, Damasceno CP, Santelli ACS. Plasmodium vivax Landscape in Brazil: Scenario and Challenges. Am J Trop Med Hyg 2016; 95:87-96. [PMID: 27708190 PMCID: PMC5201227 DOI: 10.4269/ajtmh.16-0204] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 08/19/2016] [Indexed: 01/01/2023] Open
Abstract
Brazil is the largest country of Latin America, with a considerable portion of its territoritory within the malaria-endemic Amazon region in the North. Furthermore, a considerable portion of its territory is located within the Amazon region in the north. As a result, Brazil has reported half of the total malaria cases in the Americas in the last four decades. Recent progress in malaria control has been accompanied by an increasing proportion of Plasmodium vivax, underscoring a need for a better understanding of management and control of this species and associated challenges. Among these challenges, the contribution of vivax malaria relapses, earlier production of gametocytes (compared with Plasmodium falciparum), inexistent methods to diagnose hypnozoite carriers, and decreasing efficacy of available antimalarials need to be addressed. Innovative tools, strategies, and technologies are needed to achieve further progress toward sustainable malaria elimination. Further difficulties also arise from dealing with the inherent socioeconomic and environmental particularities of the Amazon region and its dynamic changes.
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Affiliation(s)
- Andre M Siqueira
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil.,Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | | | - Paola Marchesini
- Coordenação Geral do Programa Nacional de Controle da Malaria, Ministério da Saúde, Brasilia, Brazil
| | - Vanderson de Souza Sampaio
- Fundação de Vigilância em Saúde, Manaus, Brazil.,Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil
| | - Patricia Brasil
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Pedro L Tauil
- Núcleo de Medicina Tropical, Universidade de Brasília, Brasilia, Brazil
| | | | | | | | - Marcus V G Lacerda
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz (Fiocruz), Manaus, Brazil.,Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil.,Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas, Manaus, Brazil
| | - Camila P Damasceno
- Coordenação Geral do Programa Nacional de Controle da Malaria, Ministério da Saúde, Brasilia, Brazil
| | - Ana Carolina S Santelli
- Coordenação Geral do Programa Nacional de Controle da Malaria, Ministério da Saúde, Brasilia, Brazil
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Zhang R, Lee WC, Lau YL, Albrecht L, Lopes SCP, Costa FTM, Suwanarusk R, Nosten F, Cooke BM, Rénia L, Russell B. Rheopathologic Consequence of Plasmodium vivax Rosette Formation. PLoS Negl Trop Dis 2016; 10:e0004912. [PMID: 27509168 PMCID: PMC4980013 DOI: 10.1371/journal.pntd.0004912] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 07/19/2016] [Indexed: 01/08/2023] Open
Abstract
Malaria parasites dramatically alter the rheological properties of infected red blood cells. In the case of Plasmodium vivax, the parasite rapidly decreases the shear elastic modulus of the invaded RBC, enabling it to avoid splenic clearance. This study highlights correlation between rosette formation and altered membrane deformability of P. vivax-infected erythrocytes, where the rosette-forming infected erythrocytes are significantly more rigid than their non-rosetting counterparts. The adhesion of normocytes to the PvIRBC is strong (mean binding force of 440pN) resulting in stable rosette formation even under high physiological shear flow stress. Rosetting may contribute to the sequestration of PvIRBC schizonts in the host microvasculature or spleen. While Plasmodium vivax is generally not as virulent as P. falciparum; severe manifestations of vivax malaria do occur. While little is known about the mechanisms underlying the pathobiology of P. vivax, most agree its ability to increase the deformability of stiff host reticulocytes is key adaptation to avoid splenic clearance. We show that P. vivax-infected red blood cells (PvIRBCs) rosette irreversibly with normocytes and are significantly more stiff than non-rosetting PvIRBCs. We discuss how these stiff PvIRBC rosettes are removed from the peripheral circulation and its rheopathological consequences.
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Affiliation(s)
- Rou Zhang
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
| | - Wenn-Chyau Lee
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Yee-Ling Lau
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Letusa Albrecht
- Laboratory of Tropical Diseases, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas-SP, Brazil
| | - Stefanie C. P. Lopes
- Laboratory of Tropical Diseases, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas-SP, Brazil
| | - Fabio T. M. Costa
- Laboratory of Tropical Diseases, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas-SP, Brazil
| | - Rossarin Suwanarusk
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Francois Nosten
- Shoklo Malaria Research Unit, Mahidol-Oxford tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, MaeSot, Thailand
- Centre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Brian M. Cooke
- Programs in Infection and Immunity and Cardiovascular Disease, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, Victoria, Australia
| | - Laurent Rénia
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Bruce Russell
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
- * E-mail:
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Judice CC, Bourgard C, Kayano ACAV, Albrecht L, Costa FTM. MicroRNAs in the Host-Apicomplexan Parasites Interactions: A Review of Immunopathological Aspects. Front Cell Infect Microbiol 2016; 6:5. [PMID: 26870701 PMCID: PMC4735398 DOI: 10.3389/fcimb.2016.00005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 01/13/2016] [Indexed: 01/08/2023] Open
Abstract
MicroRNAs (miRNAs), a class of small non-coding regulatory RNAs, have been detected in a variety of organisms ranging from ancient unicellular eukaryotes to mammals. They have been associated with numerous molecular mechanisms involving developmental, physiological and pathological changes of cells and tissues. Despite the fact that miRNA-silencing mechanisms appear to be absent in some Apicomplexan species, an increasing number of studies have reported a role for miRNAs in host-parasite interactions. Host miRNA expression can change following parasite infection and the consequences can lead, for instance, to parasite clearance. In this context, the immune system signaling appears to have a crucial role.
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Affiliation(s)
- Carla C Judice
- Laboratory of Tropical Diseases, Department of Genetics, Evolution and Bioagents, University of Campinas UNICAMP, Campinas, Brazil
| | - Catarina Bourgard
- Laboratory of Tropical Diseases, Department of Genetics, Evolution and Bioagents, University of Campinas UNICAMP, Campinas, Brazil
| | - Ana C A V Kayano
- Laboratory of Tropical Diseases, Department of Genetics, Evolution and Bioagents, University of Campinas UNICAMP, Campinas, Brazil
| | | | - Fabio T M Costa
- Laboratory of Tropical Diseases, Department of Genetics, Evolution and Bioagents, University of Campinas UNICAMP, Campinas, Brazil
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Lacerda MVG, Costa FTM, Lourenço-de-Oliveira R. Malaria research in Brazil: we are doing well. Mem Inst Oswaldo Cruz 2014; 109:515-6. [PMID: 25184995 PMCID: PMC4156442 DOI: 10.1590/0074-0276143001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Lopes SCP, Albrecht L, Carvalho BO, Siqueira AM, Thomson-Luque R, Nogueira PA, Fernandez-Becerra C, Del Portillo HA, Russell BM, Rénia L, Lacerda MVG, Costa FTM. Paucity of Plasmodium vivax mature schizonts in peripheral blood is associated with their increased cytoadhesive potential. J Infect Dis 2014; 209:1403-7. [PMID: 24415786 DOI: 10.1093/infdis/jiu018] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
There is now a growing body of evidence that challenges the current view that Plasmodium vivax-infected erythrocyte (Pv-iE) are unable to sequester. Here we used ex vivo adhesion assays with Pv-iE before and after maturation to demonstrate a higher binding potential of schizonts compared to other asexual stages. These experimental results are correlated with our observations in a panel of 50 vivax malaria patients where schizonts were completely absent in 27 isolates, and few schizonts were observed in the remaining patients. These observations prompt a paradigm shift in P. vivax biology and open avenues to investigate the role of Pv-iE sequestration.
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Affiliation(s)
- Stefanie C P Lopes
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
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Malleret B, Xu F, Mohandas N, Suwanarusk R, Chu C, Leite JA, Low K, Turner C, Sriprawat K, Zhang R, Bertrand O, Colin Y, Costa FTM, Ong CN, Ng ML, Lim CT, Nosten F, Rénia L, Russell B. Significant biochemical, biophysical and metabolic diversity in circulating human cord blood reticulocytes. PLoS One 2013; 8:e76062. [PMID: 24116088 PMCID: PMC3793000 DOI: 10.1371/journal.pone.0076062] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 08/09/2013] [Indexed: 11/18/2022] Open
Abstract
Background The transition from enucleated reticulocytes to mature normocytes is marked by substantial remodeling of the erythrocytic cytoplasm and membrane. Despite conspicuous changes, most studies describe the maturing reticulocyte as a homogenous erythropoietic cell type. While reticulocyte staging based on fluorescent RNA stains such as thiazole orange have been useful in a clinical setting; these ‘sub-vital’ stains may confound delicate studies on reticulocyte biology and may preclude their use in heamoparasite invasion studies. Design and Methods Here we use highly purified populations of reticulocytes isolated from cord blood, sorted by flow cytometry into four sequential subpopulations based on transferrin receptor (CD71) expression: CD71high, CD71medium, CD71low and CD71negative. Each of these subgroups was phenotyped in terms of their, morphology, membrane antigens, biomechanical properties and metabolomic profile. Results Superficially CD71high and CD71medium reticulocytes share a similar gross morphology (large and multilobular) when compared to the smaller, smooth and increasingly concave reticulocytes as seen in the in the CD71low and CD71negativesamples. However, between each of the four sample sets we observe significant decreases in shear modulus, cytoadhesive capacity, erythroid receptor expression (CD44, CD55, CD147, CD235R, and CD242) and metabolite concentrations. Interestingly increasing amounts of boric acid was found in the mature reticulocytes. Conclusions Reticulocyte maturation is a dynamic and continuous process, confounding efforts to rigidly classify them. Certainly this study does not offer an alternative classification strategy; instead we used a nondestructive sampling method to examine key phenotypic changes of in reticulocytes. Our study emphasizes a need to focus greater attention on reticulocyte biology.
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Affiliation(s)
- Benoît Malleret
- Laboratory of Malaria Immunobiology, Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Biopolis, Singapore
| | - Fenggao Xu
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | - Narla Mohandas
- Red Cell Physiology Laboratory, New York Blood Center, New York, New York, United States of America
| | - Rossarin Suwanarusk
- Laboratory of Malaria Immunobiology, Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Biopolis, Singapore
| | - Cindy Chu
- Shoklo Malaria Research Unit, Mae Sot, Thailand
| | - Juliana A. Leite
- Laboratory of Malaria Immunobiology, Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Biopolis, Singapore
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), São Paulo, Brazil
| | | | | | | | - Rou Zhang
- Singapore-MIT Alliance, National University of Singapore, Singapore
| | - Olivier Bertrand
- INSERM (Institut national de la santé et de la recherche médicale), UMR-S (Unité Mixte de Recherche) 665, Paris, France
- Institut National de la Transfusion Sanguine, Paris, France
- Universite Paris 7–Denis Diderot, Paris, France
| | - Yves Colin
- INSERM (Institut national de la santé et de la recherche médicale), UMR-S (Unité Mixte de Recherche) 665, Paris, France
- Institut National de la Transfusion Sanguine, Paris, France
- Universite Paris 7–Denis Diderot, Paris, France
| | - Fabio T. M. Costa
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), São Paulo, Brazil
| | - Choon Nam Ong
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | - Mah Lee Ng
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
| | - Chwee Teck Lim
- Singapore-MIT Alliance, National University of Singapore, Singapore
- Department of Bioengineering and Department of Mechanical Engineering, National University of Singapore, Singapore
| | - Francois Nosten
- Shoklo Malaria Research Unit, Mae Sot, Thailand
- Mahidol-Oxford-University Research Unit, Bangkok, Thailand
- Centre for Tropical Medicine, University of Oxford, Churchill Hospital, Oxford, United Kingdom
| | - Laurent Rénia
- Laboratory of Malaria Immunobiology, Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Biopolis, Singapore
- * E-mail: (BR); (LR)
| | - Bruce Russell
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore
- * E-mail: (BR); (LR)
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De las Salas B, Segura C, Pabón A, Lopes SCP, Costa FTM, Blair S. Adherence to human lung microvascular endothelial cells (HMVEC-L) of Plasmodium vivax isolates from Colombia. Malar J 2013; 12:347. [PMID: 24080027 PMCID: PMC3850517 DOI: 10.1186/1475-2875-12-347] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 09/24/2013] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND For years Plasmodium vivax has been considered the cause of benign malaria. Nevertheless, it has been observed that this parasite can produce a severe disease comparable to Plasmodium falciparum. It has been suggested that some physiopathogenic processes might be shared by these two species, such as cytoadherence. Recently, it has been demonstrated that P. vivax-infected erythrocytes (Pv-iEs) have the capacity to adhere to endothelial cells, in which intercellular adhesion molecule-1 (ICAM-1) seems to be involved in this process. METHODS Adherence capacity of 21 Colombian isolates, from patients with P. vivax mono-infection to a microvascular line of human lung endothelium (HMVEC-L) was assessed in static conditions and binding was evaluated at basal levels or in tumor necrosis factor (TNF) stimulated cells. The adherence specificity for the ICAM-1 receptor was determined through inhibition with an anti-CD54 monoclonal antibody. RESULTS The majority of P. vivax isolates, 13 out of 21 (61.9%), adhered to the HMVEC-L cells, but P. vivax adherence was at least seven times lower when compared to the four P. falciparum isolates. Moreover, HMVEC-L stimulation with TNF led to an increase of 1.6-fold in P. vivax cytoadhesion, similar to P. falciparum isolates (1.8-fold) at comparable conditions. Also, blockage of ICAM-1 receptor with specific antibodies showed a significant 50% adherence reduction. CONCLUSIONS Plasmodium vivax isolates found in Colombia are also capable of adhering specifically in vitro to lung endothelial cells, via ICAM-1 cell receptor, both at basal state and after cell stimulation with TNF. Collectively, these findings reinforce the concept of cytoadherence for P. vivax, but here, to a different endothelial cell line and using geographical distinct isolates, thus contributing to understanding P. vivax biology.
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Affiliation(s)
- Briegel De las Salas
- Grupo Malaria, Facultad de Medicina, Universidad de Antioquia UdeA, Calle 70 No, 52-21, Medellín, Colombia.
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Versiani FG, Almeida MEM, Melo GC, Versiani FOL, Orlandi PP, Mariúba LAM, Soares LA, Souza LP, da Silva Balieiro AA, Monteiro WM, Costa FTM, del Portillo HA, Lacerda MVG, Nogueira PA. High levels of IgG3 anti ICB2-5 in Plasmodium vivax-infected individuals who did not develop symptoms. Malar J 2013; 12:294. [PMID: 23977965 PMCID: PMC3844576 DOI: 10.1186/1475-2875-12-294] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 08/19/2013] [Indexed: 11/10/2022] Open
Abstract
Background Plasmodium vivax has the potential to infect 2.85 billion individuals worldwide. Nevertheless, the limited number of studies investigating the immune status of individuals living in malaria-endemic areas, as well as the lack of reports investigating serological markers associated with clinical protection, has hampered development of vaccines for P. vivax. It was previously demonstrated that naturally total IgG against the N-terminus of P. vivax merozoite surface protein 1 (Pv-MSP1) was associated with reduced risk of malarial infection. Methods Immune response against Pv-MSP1 (N-terminus) of 313 residents of the Rio Pardo rural settlement (Amazonas State, Brazil) was evaluated in a cross-sectional and longitudinal follow up over two months (on site) wherein gold standard diagnosis by thick blood smear and rRNA gene-based nested real-time PCR were used to discriminate symptomless Plasmodium vivax-infected individuals who did not develop clinical symptoms during a 2-months from those uninfected ones or who have had acute malaria. The acquisition of antibodies against Pv-MSP1 was also evaluated as survival analysis by prospective study over a year collecting information of new malaria infections in surveillance database. Results The majority of P. vivax-infected individuals (52-67%) showed immune recognition of the N-terminus of Pv-MSP1. Interesting data on infected individuals who have not developed symptoms, total IgG levels against the N-terminus Pv-MSP1 were age-dependent and the IgG3 levels were significantly higher than levels of subjects had acute malaria or those uninfected ones. The total IgG anti ICB2-5 was detected to be an important factor of protection against new malaria vivax attacks in survival analysis in a prospective survey (p = 0.029). Conclusions The study findings illustrate the importance of IgG3 associated to 2-months of symptomless in P. vivax infected individuals and open perspectives for the rationale of malaria vaccine designs capable to sustain high levels of IgG3 against polymorphic malaria antigens.
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Affiliation(s)
- Fernanda G Versiani
- Instituto Leônidas e Maria Deane - Fiocruz, Rua Teresina 476, 69057-070 Manaus, AM, Brazil.
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Russell B, Suwanarusk R, Malleret B, Costa FTM, Snounou G, Kevin Baird J, Nosten F, Rénia L. Human ex vivo studies on asexual Plasmodium vivax: the best way forward. Int J Parasitol 2012; 42:1063-70. [PMID: 23032102 DOI: 10.1016/j.ijpara.2012.08.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/07/2012] [Accepted: 08/14/2012] [Indexed: 11/17/2022]
Abstract
The lack of a continuous culture method for Plasmodium vivax has given the impression that investigations on this important species are severely curtailed. However, the use of new or improved ex vivo methods and tools to study fresh and thawed isolates from vivax malaria patients is currently providing useful data on P. vivax, such as sensitivity to antimalarial drugs, invasion mechanisms and pathobiology. This review discusses a practical framework for conducting ex vivo studies on the asexual erythrocytic stages of P. vivax and considers the synergies between ex vivo defined phenotypes, ex vivo derived 'omic' studies and in vivo clinical studies.
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Affiliation(s)
- Bruce Russell
- Singapore Immunology Network, Biopolis, Agency for Science Technology and Research, Singapore.
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Costa FTM, Lopes SCP, Ferrer M, Leite JA, Martin-Jaular L, Bernabeu M, Nogueira PA, Mourão MPG, Fernandez-Becerra C, Lacerda MVG, del Portillo H. On cytoadhesion of Plasmodium vivax: raison d'être? Mem Inst Oswaldo Cruz 2012; 106 Suppl 1:79-84. [PMID: 21881760 DOI: 10.1590/s0074-02762011000900010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2011] [Accepted: 06/10/2011] [Indexed: 11/22/2022] Open
Abstract
It is generally accepted that Plasmodium vivax, the most widely distributed human malaria parasite, causes mild disease and that this species does not sequester in the deep capillaries of internal organs. Recent evidence, however, has demonstrated that there is severe disease, sometimes resulting in death, exclusively associated with P. vivax and that P. vivax-infected reticulocytes are able to cytoadhere in vitro to different endothelial cells and placental cryosections. Here, we review the scarce and preliminary data on cytoadherence in P. vivax, reinforcing the importance of this phenomenon in this species and highlighting the avenues that it opens for our understanding of the pathology of this neglected human malaria parasite.
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Affiliation(s)
- Fabio T M Costa
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil.
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Carvalho BO, Matsuda JS, Luz SLB, Martinez-Espinosa FE, Leite JA, Franzin F, Orlandi PP, Gregoracci GB, Lacerda MVG, Nogueira PA, Costa FTM. Gestational malaria associated to Plasmodium vivax and Plasmodium falciparum placental mixed-infection followed by foetal loss: a case report from an unstable transmission area in Brazil. Malar J 2011; 10:178. [PMID: 21708032 PMCID: PMC3141593 DOI: 10.1186/1475-2875-10-178] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Accepted: 06/27/2011] [Indexed: 11/10/2022] Open
Abstract
Gestational malaria is a multi-factorial syndrome leading to poor outcomes for both the mother and foetus. Although an unusual increasing in the number of hospitalizations caused by Plasmodium vivax has been reported in Brazil, mortality is rarely observed. This is a report of a gestational malaria case that occurred in the city of Manaus (Amazonas State, Brazil) and resulted in foetal loss. The patient presented placental mixed-infection by Plasmodium vivax and Plasmodium falciparum after diagnosis by nested-PCR, however microscopic analysis failed to detect P. falciparum in the peripheral blood. Furthermore, as the patient did not receive proper treatment for P. falciparum and hospitalization occurred soon after drug treatment, it seems that P. falciparum pathology was modulated by the concurrent presence of P. vivax. Collectively, this case confirms the tropism towards the placenta by both of these species of parasites, reinforces the notion that co-existence of distinct malaria parasites interferes on diseases' outcomes, and opens discussions regarding diagnostic methods, malaria treatment during pregnancy and prenatal care for women living in unstable transmission areas of malaria, such as the Brazilian Amazon.
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Affiliation(s)
- Bruna O Carvalho
- Departamento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas - Campinas, SP, Brazil
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Kayano ACAV, Lopes SCP, Bueno FG, Cabral EC, Souza-Neiras WC, Yamauchi LM, Foglio MA, Eberlin MN, Mello JCP, Costa FTM. In vitro and in vivo assessment of the anti-malarial activity of Caesalpinia pluviosa. Malar J 2011; 10:112. [PMID: 21535894 PMCID: PMC3112450 DOI: 10.1186/1475-2875-10-112] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 05/02/2011] [Indexed: 11/10/2022] Open
Abstract
Background To overcome the problem of increasing drug resistance, traditional medicines are an important source for potential new anti-malarials. Caesalpinia pluviosa, commonly named "sibipiruna", originates from Brazil and possess multiple therapeutic properties, including anti-malarial activity. Methods Crude extract (CE) was obtained from stem bark by purification using different solvents, resulting in seven fractions. An MTT assay was performed to evaluate cytotoxicity in MCF-7 cells. The CE and its fractions were tested in vitro against chloroquine-sensitive (3D7) and -resistant (S20) strains of Plasmodium falciparum and in vivo in Plasmodium chabaudi-infected mice. In vitro interaction with artesunate and the active C. pluviosa fractions was assessed, and mass spectrometry analyses were conducted. Results At non-toxic concentrations, the 100% ethanolic (F4) and 50% methanolic (F5) fractions possessed significant anti-malarial activity against both 3D7 and S20 strains. Drug interaction assays with artesunate showed a synergistic interaction with the F4. Four days of treatment with this fraction significantly inhibited parasitaemia in mice in a dose-dependent manner. Mass spectrometry analyses revealed the presence of an ion corresponding to m/z 303.0450, suggesting the presence of quercetin. However, a second set of analyses, with a quercetin standard, showed distinct ions of m/z 137 and 153. Conclusions The findings show that the F4 fraction of C. pluviosa exhibits anti-malarial activity in vitro at non-toxic concentrations, which was potentiated in the presence of artesunate. Moreover, this anti-malarial activity was also sustained in vivo after treatment of infected mice. Finally, mass spectrometry analyses suggest that a new compound, most likely an isomer of quercetin, is responsible for the anti-malarial activity of the F4.
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Affiliation(s)
- Ana Carolina A V Kayano
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade de Campinas (UNICAMP), Campinas, SP, Brazil
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41
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Farias AS, Talaisys RL, Blanco YC, Lopes SCP, Longhini ALF, Pradella F, Santos LMB, Costa FTM. Regulatory T cell induction during Plasmodium chabaudi infection modifies the clinical course of experimental autoimmune encephalomyelitis. PLoS One 2011; 6:e17849. [PMID: 21464982 PMCID: PMC3064572 DOI: 10.1371/journal.pone.0017849] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 02/10/2011] [Indexed: 11/19/2022] Open
Abstract
Background Experimental autoimmune encephalomyelitis (EAE) is used as an animal model for human multiple sclerosis (MS), which is an inflammatory demyelinating autoimmune disease of the central nervous system characterized by activation of Th1 and/or Th17 cells. Human autoimmune diseases can be either exacerbated or suppressed by infectious agents. Recent studies have shown that regulatory T cells play a crucial role in the escape mechanism of Plasmodium spp. both in humans and in experimental models. These cells suppress the Th1 response against the parasite and prevent its elimination. Regulatory T cells have been largely associated with protection or amelioration in several autoimmune diseases, mainly by their capacity to suppress proinflammatory response. Methodology/Principal Findings In this study, we verified that CD4+CD25+ regulatory T cells (T regs) generated during malaria infection (6 days after EAE induction) interfere with the evolution of EAE. We observed a positive correlation between the reduction of EAE clinical symptoms and an increase of parasitemia levels. Suppression of the disease was also accompanied by a decrease in the expression of IL-17 and IFN-γ and increases in the expression of IL-10 and TGF-β1 relative to EAE control mice. The adoptive transfer of CD4+CD25+ cells from P. chabaudi-infected mice reduced the clinical evolution of EAE, confirming the role of these T regs. Conclusions/Significance These data corroborate previous findings showing that infections interfere with the prevalence and evolution of autoimmune diseases by inducing regulatory T cells, which regulate EAE in an apparently non-specific manner.
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MESH Headings
- Animals
- Autoimmunity/immunology
- Cell Survival
- Cytokines/genetics
- Cytokines/metabolism
- Disease Progression
- Encephalomyelitis, Autoimmune, Experimental/complications
- Encephalomyelitis, Autoimmune, Experimental/genetics
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/parasitology
- Gene Expression Regulation
- Humans
- Interleukin-2 Receptor alpha Subunit/metabolism
- Malaria/complications
- Malaria/genetics
- Malaria/immunology
- Malaria/parasitology
- Mice
- Mice, Inbred C57BL
- Plasmodium chabaudi/immunology
- T-Lymphocytes, Regulatory/immunology
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Affiliation(s)
- Alessandro S. Farias
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
- * E-mail: (ASF); (FTMC)
| | - Rafael L. Talaisys
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Yara C. Blanco
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Stefanie C. P. Lopes
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Ana Leda F. Longhini
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Fernando Pradella
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Leonilda M. B. Santos
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Fabio T. M. Costa
- Departmento de Genética, Evolução e Bioagentes, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
- * E-mail: (ASF); (FTMC)
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42
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Carvalho BO, Lopes SCP, Nogueira PA, Orlandi PP, Bargieri DY, Blanco YC, Mamoni R, Leite JA, Rodrigues MM, Soares IS, Oliveira TR, Wunderlich G, Lacerda MVG, del Portillo HA, Araújo MOG, Russell B, Suwanarusk R, Snounou G, Rénia L, Costa FTM. On the cytoadhesion of Plasmodium vivax-infected erythrocytes. J Infect Dis 2010; 202:638-47. [PMID: 20617923 DOI: 10.1086/654815] [Citation(s) in RCA: 235] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Plasmodium falciparum and Plasmodium vivax are responsible for most of the global burden of malaria. Although the accentuated pathogenicity of P. falciparum occurs because of sequestration of the mature erythrocytic forms in the microvasculature, this phenomenon has not yet been noted in P. vivax. The increasing number of severe manifestations of P. vivax infections, similar to those observed for severe falciparum malaria, suggests that key pathogenic mechanisms (eg, cytoadherence) might be shared by the 2 parasites. METHODS Mature P. vivax-infected erythrocytes (Pv-iEs) were isolated from blood samples collected from 34 infected patients. Pv-iEs enriched on Percoll gradients were used in cytoadhesion assays with human lung endothelial cells, Saimiri brain endothelial cells, and placental cryosections. RESULTS Pv-iEs were able to cytoadhere under static and flow conditions to cells expressing endothelial receptors known to mediate the cytoadhesion of P. falciparum. Although Pv-iE cytoadhesion levels were 10-fold lower than those observed for P. falciparum-infected erythrocytes, the strength of the interaction was similar. Cytoadhesion of Pv-iEs was in part mediated by VIR proteins, encoded by P. vivax variant genes (vir), given that specific antisera inhibited the Pv-iE-endothelial cell interaction. CONCLUSIONS These observations prompt a modification of the current paradigms of the pathogenesis of malaria and clear the way to investigate the pathophysiology of P. vivax infections.
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Affiliation(s)
- Bruna O Carvalho
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
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43
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Albrecht L, Castiñeiras C, Carvalho BO, Ladeia-Andrade S, Santos da Silva N, Hoffmann EHE, dalla Martha RC, Costa FTM, Wunderlich G. The South American Plasmodium falciparum var gene repertoire is limited, highly shared and possibly lacks several antigenic types. Gene 2010; 453:37-44. [PMID: 20079817 DOI: 10.1016/j.gene.2010.01.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Revised: 01/05/2010] [Accepted: 01/06/2010] [Indexed: 11/16/2022]
Abstract
The Plasmodium falciparum var gene family encodes large variant antigens, which are important virulence factors, and also targets of the humoral host response. The frequently observed mild outcomes of falciparum malaria in many places of the Amazon area prompted us to ask whether a globally restricted variant (var) gene repertoire is present in currently circulating and older isolates of this area. By exhaustive analysis of var gene tags from 89 isolates and clones taken during many years from all over the Brazilian Amazon, we estimate that there are probably no more than 350-430 distinct sequence types, less than for any similar sized area studied so far. Detailed analysis of the var tags from genetically distinct clones obtained from single isolates revealed restricted and redundant repertoires suggesting either a low incidence of infective bites or restricted variant gene diversity in inoculated parasites. Additionally, we found a structuring of var gene repertoires observed as a higher pairwise typing sharing in isolates from the same microregion compared to isolates from different regions. Fine analysis of translated var tags revealed that certain Distinct Sequence Identifiers (DSIDs) were differently represented in Brazilian/South American isolates when compared to datasets from other continents. By global alignment of worldwide var DBLalpha sequences and sorting in groups with more than 76% identity, 125 clusters were formed and more than half of all genes were found in nine clusters with 50 or more sequences. While Brazilian/South American sequences were represented only in 64 groups, African sequences were found in the majority of clusters. DSID type 1 related sequences accumulated almost completely in one single cluster, indicating that limited recombination occurs in these specific var gene types. These data demonstrate the so far highest pairwise type sharing values for the var gene family in isolates from all over an entire subcontinent. The apparent lack of specific sequences types suggests that the P. falciparum transmission dynamics in the whole Amazon are probably different from any other endemic region studied and possibly interfere with the parasite's ability to efficiently diversify its variant gene repertoires.
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Affiliation(s)
- Letusa Albrecht
- Department of Parasitology, Institute for Biomedical Sciences, University of São Paulo, Brazil
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Durán N, Marcato PD, Conti RD, Alves OL, Costa FTM, Brocchi M. Potential use of silver nanoparticles on pathogenic bacteria, their toxicity and possible mechanisms of action. J BRAZIL CHEM SOC 2010. [DOI: 10.1590/s0103-50532010000600002] [Citation(s) in RCA: 308] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Rezende AC, Peroni D, Vieira AS, Rogerio F, Talaisys RL, Costa FTM, Langone F, Skaper SD, Negro A. Ciliary neurotrophic factor fused to a protein transduction domain retains full neuroprotective activity in the absence of cytokine-like side effects. J Neurochem 2009; 109:1680-90. [DOI: 10.1111/j.1471-4159.2009.06091.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Durán N, Gowen BB, Costa FTM, Justo GZ, Brocchi M, Nunes OS, Nunes IS. A biotechnological product and its potential as a new immunomodulator for treatment of animal phlebovirus infection: Punta Toro virus. Antiviral Res 2009; 83:143-7. [PMID: 19393266 DOI: 10.1016/j.antiviral.2009.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 04/08/2009] [Accepted: 04/09/2009] [Indexed: 11/15/2022]
Abstract
Intracellular pathogens with widespread drug-resistance contribute substantially to the increasing rates in morbidity and mortality due to emerging and reemerging diseases. Thus, the development of new drugs, including those that can enhance the immune response, is urgently needed. The immunomodulator, P-MAPA, a proteinaceous aggregate of ammonium and magnesium phospholinoleate-palmitoleate anhydride derived from Aspergillus oryzae, have been shown to induce antitumor activities. The ability of this compound to elicit protective immunity against viral infections has not been fully explored. Here, we report findings on the use of P-MAPA as an antiviral agent in a mouse model of acute phleboviral (Punta Toro virus) disease. A dose administered i.p. 24h post-infectious challenge (100mg/kg dose of P-MAPA) was remarkably effective at preventing death due to Punta Toro virus infection. This dose also reduced systemic viral burden and liver discoloration assayed on day 3 of infection. Taken together, our findings indicate that non-specific immunotherapy with P-MAPA appears to be an effective treatment for blocking Punta Toro virus-induced disease and suggest that further exploration with other viral disease models is warranted.
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Affiliation(s)
- Nelson Durán
- Instituto de Quimica, Biological Chemistry Laboratory, Universidade Estadual de Campinas, S.P., Brazil.
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47
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Belnoue E, Voza T, Costa FTM, Grüner AC, Mauduit M, Rosa DS, Depinay N, Kayibanda M, Vigário AM, Mazier D, Snounou G, Sinnis P, Rénia L. Vaccination with live Plasmodium yoelii blood stage parasites under chloroquine cover induces cross-stage immunity against malaria liver stage. J Immunol 2009; 181:8552-8. [PMID: 19050274 DOI: 10.4049/jimmunol.181.12.8552] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Immunity to malaria has long been thought to be stage-specific. In this study we show that immunization of BALB/c mice with live erythrocytes infected with nonlethal strains of Plasmodium yoelii under curative chloroquine cover conferred protection not only against challenge by blood stage parasites but also against sporozoite challenge. This cross-stage protection was dose-dependent and long lasting. CD4(+) and CD8(+) T cells inhibited malaria liver but not blood stage. Their effect was mediated partially by IFN-gamma, and was completely dependent of NO. Abs against both pre-erythrocytic and blood parasites were elicited and were essential for protection against blood stage and liver stage parasites. Our results suggest that Ags shared by liver and blood stage parasites can be the foundation for a malaria vaccine that would provide effective protection against both pre-erythrocytic and erythrocytic asexual parasites found in the mammalian host.
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Affiliation(s)
- Elodie Belnoue
- Department of Immunology, Centre National de la Recherche Scientifique, Institut Cochin, Université Paris Descartes, Paris, France
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Blanco YC, Farias AS, Goelnitz U, Lopes SCP, Arrais-Silva WW, Carvalho BO, Amino R, Wunderlich G, Santos LMB, Giorgio S, Costa FTM. Hyperbaric oxygen prevents early death caused by experimental cerebral malaria. PLoS One 2008; 3:e3126. [PMID: 18769544 PMCID: PMC2518956 DOI: 10.1371/journal.pone.0003126] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2007] [Accepted: 08/14/2008] [Indexed: 01/12/2023] Open
Abstract
Background Cerebral malaria (CM) is a syndrome characterized by neurological signs, seizures and coma. Despite the fact that CM presents similarities with cerebral stroke, few studies have focused on new supportive therapies for the disease. Hyperbaric oxygen (HBO) therapy has been successfully used in patients with numerous brain disorders such as stroke, migraine and atherosclerosis. Methodology/Principal Findings C57BL/6 mice infected with Plasmodium berghei ANKA (PbA) were exposed to daily doses of HBO (100% O2, 3.0 ATA, 1–2 h per day) in conditions well-tolerated by humans and animals, before or after parasite establishment. Cumulative survival analyses demonstrated that HBO therapy protected 50% of PbA-infected mice and delayed CM-specific neurological signs when administrated after patent parasitemia. Pressurized oxygen therapy reduced peripheral parasitemia, expression of TNF-α, IFN-γ and IL-10 mRNA levels and percentage of γδ and αβ CD4+ and CD8+ T lymphocytes sequestered in mice brains, thus resulting in a reduction of blood-brain barrier (BBB) dysfunction and hypothermia. Conclusions/Significance The data presented here is the first indication that HBO treatment could be used as supportive therapy, perhaps in association with neuroprotective drugs, to prevent CM clinical outcomes, including death.
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Affiliation(s)
- Yara C. Blanco
- Department of Microbiology & Immunology, State University of Campinas – UNICAMP, Campinas, São Paulo, Brazil
- Department of Parasitology, UNICAMP, State University of Campinas, Campinas, São Paulo, Brazil
| | - Alessandro S. Farias
- Department of Microbiology & Immunology, State University of Campinas – UNICAMP, Campinas, São Paulo, Brazil
| | - Uta Goelnitz
- Department of Parasitology – ICB, University of São Paulo – USP, São Paulo, São Paulo, Brazil
| | - Stefanie C. P. Lopes
- Department of Microbiology & Immunology, State University of Campinas – UNICAMP, Campinas, São Paulo, Brazil
- Department of Parasitology, UNICAMP, State University of Campinas, Campinas, São Paulo, Brazil
| | - Wagner W. Arrais-Silva
- Department of Parasitology, UNICAMP, State University of Campinas, Campinas, São Paulo, Brazil
| | - Bruna O. Carvalho
- Department of Microbiology & Immunology, State University of Campinas – UNICAMP, Campinas, São Paulo, Brazil
- Department of Parasitology, UNICAMP, State University of Campinas, Campinas, São Paulo, Brazil
| | - Rogério Amino
- Department of Biochemistry, Federal University of São Paulo – UNIFESP, São Paulo, São Paulo, Brazil
| | - Gerhard Wunderlich
- Department of Parasitology – ICB, University of São Paulo – USP, São Paulo, São Paulo, Brazil
| | - Leonilda M. B. Santos
- Department of Microbiology & Immunology, State University of Campinas – UNICAMP, Campinas, São Paulo, Brazil
| | - Selma Giorgio
- Department of Parasitology, UNICAMP, State University of Campinas, Campinas, São Paulo, Brazil
| | - Fabio T. M. Costa
- Department of Microbiology & Immunology, State University of Campinas – UNICAMP, Campinas, São Paulo, Brazil
- Department of Parasitology, UNICAMP, State University of Campinas, Campinas, São Paulo, Brazil
- * E-mail:
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Múfalo BC, Gentil F, Bargieri DY, Costa FTM, Rodrigues MM, Soares IS. Plasmodium vivax apical membrane antigen-1: comparative recognition of different domains by antibodies induced during natural human infection. Microbes Infect 2008; 10:1266-73. [PMID: 18692152 DOI: 10.1016/j.micinf.2008.07.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2008] [Revised: 07/11/2008] [Accepted: 07/14/2008] [Indexed: 11/26/2022]
Abstract
The Apical Membrane Antigen-1 (AMA-1) of Plasmodium sp. has been suggested as a vaccine candidate against malaria. This protein seems to be involved in merozoite invasion and its extra-cellular portion contains three distinct domains: DI, DII, and DIII. Previously, we described that Plasmodium vivax AMA-1 (PvAMA-1) ectodomain is highly immunogenic in natural human infections. Here, we expressed each domain, separately or in combination (DI-II or DII-III), as bacterial recombinant proteins to map immunodominant epitopes within the PvAMA-1 ectodomain. IgG recognition was assessed by ELISA using sera of P. vivax-infected individuals collected from endemic regions of Brazil or antibodies raised in immunized mice. The frequencies of responders to recombinant proteins containing the DII were higher than the others and similar to the ones observed against the PvAMA-1 ectodomain. Moreover, ELISA inhibition assays using the PvAMA-1 ectodomain as substrate revealed the presence of many common epitopes within DI-II that are recognized by human immune antibodies. Finally, immunization of mice with the PvAMA-1 ectodomain induced high levels of antibodies predominantly to DI-II. Together, our results indicate that DII is particularly immunogenic during natural human infections, thus indicating that this region could be used as part of an experimental sub-unit vaccine to prevent vivax malaria.
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Affiliation(s)
- Bruno C Múfalo
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 580, Cidade Universitária, 05508-900, São Paulo, SP, Brazil
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50
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Andrade CF, Gameiro J, Nagib PRA, Carvalho BO, Talaisys RL, Costa FTM, Verinaud L. Thymic alterations in Plasmodium berghei-infected mice. Cell Immunol 2008; 253:1-4. [PMID: 18635160 DOI: 10.1016/j.cellimm.2008.06.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 05/30/2008] [Accepted: 06/04/2008] [Indexed: 12/29/2022]
Abstract
The primary function of the thymus is to develop immature T-cells into cells that further in the periphery will be able to carry out immune functions. The Literature has shown that thymus can be a target for many pathogens and severe structural alterations take place in this organ during infectious diseases. Here, we investigated if thymus is also a target organ during experimental malaria infection by analyzing the presence of parasites inside the organ and histological alterations in thymuses from Plasmodium berghei NK65-infected BALB/c. After 14 days of infection, parasites were found inside the thymus that presented a profound atrophy with total loss of its architecture. We propose that the presence of parasites in the thymus induces histological modifications that alter the microenvironment, impairing by consequence the successful T cell development. Additional studies are currently being developed in our laboratory to verify if such thymic alterations can influence the systemic immune response to the parasite.
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Affiliation(s)
- C F Andrade
- Department of Microbiology and Immunology, Biology Institute, State University of Campinas, Campinas, São Paulo, Brazil
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