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Aran V, Lyra Miranda R, Heringer M, Carvalho da Fonseca AC, Andreiuolo F, Chimelli L, Devalle S, Niemeyer Filho P, Moura-Neto V. Liquid biopsy evaluation of circulating tumor DNA, miRNAs, and cytokines in meningioma patients. Front Neurol 2024; 14:1321895. [PMID: 38259646 PMCID: PMC10800936 DOI: 10.3389/fneur.2023.1321895] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/14/2023] [Indexed: 01/24/2024] Open
Abstract
Introduction Liquid biopsy is a non-invasive method used to detect cancer and monitor treatment responses by analyzing blood or other bodily fluids for cancer biomarkers. Meningiomas are the most common primary central nervous system tumors, and biomarkers play a crucial role in their diagnosis, prognosis, and treatment monitoring. The World Health Organization (WHO) classifies meningiomas based on tumor grades and molecular alterations in genes such as in NF2, AKT1, TRAF7, SMO, PIK3CA, KLF4, SMARCE1, BAP1, H3K27me3, TERT promoter, and CDKN2A/B. Liquid biopsy, specifically cell-free DNA (cfDNA) analysis, has shown potential for monitoring meningiomas as it can detect ctDNA release in the blood, unaffected by the blood-brain barrier. MicroRNAs (miRNAs) have also been found to be deregulated in various cancers, including meningiomas, presenting potential as diagnostic biomarkers. Additionally, studying cytokines in the tumor microenvironment may aid in establishing prognostic or diagnostic panels for meningiomas. Methods In the present study we analyzed the DNA coming from both the plasma and tumor samples, in addition to analyze miRNA-21 and cytokines in the plasma of 28 meningioma patients. Discussion and Conclusion Our findings indicate that the detection of ctDNA in the plasma of meningioma patients is feasible. However, it's important to note that certain challenges persist when comparing plasma DNA analysis to that of tumor tissues. In our study, we observed a paired identification of mutations in only one patient, highlighting the complexities involved. Furthermore, we successfully identified miR-21 and cytokines in the plasma samples. Notably, our analysis of Interleukin 6 (IL-6) unveiled higher expression in the clear cell subtype compared to the other types. Despite the ongoing research, the clinical implementation of liquid biopsy in meningiomas remains somewhat limited. Nevertheless, our promising results underscore the need for further investigation.
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Affiliation(s)
- Veronica Aran
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Renan Lyra Miranda
- Neuropathology and Molecular Genetics Laboratory, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Manoela Heringer
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | | | - Felipe Andreiuolo
- Neuropathology and Molecular Genetics Laboratory, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
- Rede D'Or, IDOR - Instituto D'Or de Pesquisa e Ensino, Rio de Janeiro, Brazil
| | - Leila Chimelli
- Neuropathology and Molecular Genetics Laboratory, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Sylvie Devalle
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Paulo Niemeyer Filho
- Neurosurgery Division, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Vivaldo Moura-Neto
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
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Capra D, DosSantos MF, Sanz CK, Acosta Filha LG, Nunes P, Heringer M, Ximenes-da-Silva A, Pessoa L, de Mattos Coelho-Aguiar J, da Fonseca ACC, Mendes CB, da Rocha LS, Devalle S, Niemeyer Soares Filho P, Moura-Neto V. Pathophysiology and mechanisms of hearing impairment related to neonatal infection diseases. Front Microbiol 2023; 14:1162554. [PMID: 37125179 PMCID: PMC10140533 DOI: 10.3389/fmicb.2023.1162554] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
The inner ear, the organ of equilibrium and hearing, has an extraordinarily complex and intricate arrangement. It contains highly specialized structures meticulously tailored to permit auditory processing. However, hearing also relies on both peripheral and central pathways responsible for the neuronal transmission of auditory information from the cochlea to the corresponding cortical regions. Understanding the anatomy and physiology of all components forming the auditory system is key to better comprehending the pathophysiology of each disease that causes hearing impairment. In this narrative review, the authors focus on the pathophysiology as well as on cellular and molecular mechanisms that lead to hearing loss in different neonatal infectious diseases. To accomplish this objective, the morphology and function of the main structures responsible for auditory processing and the immune response leading to hearing loss were explored. Altogether, this information permits the proper understanding of each infectious disease discussed.
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Affiliation(s)
- Daniela Capra
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos F. DosSantos
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Odontologia (PPGO), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Propriedades Mecânicas e Biologia Celular (PropBio), Departamento de Prótese e Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- *Correspondence: Marcos F. DosSantos, ;
| | - Carolina K. Sanz
- Laboratório de Propriedades Mecânicas e Biologia Celular (PropBio), Departamento de Prótese e Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Lionete Gall Acosta Filha
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Propriedades Mecânicas e Biologia Celular (PropBio), Departamento de Prótese e Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Priscila Nunes
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Manoela Heringer
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | | | - Luciana Pessoa
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Juliana de Mattos Coelho-Aguiar
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Anatomia Patológica, Hospital Universitário Clementino Fraga Filho (HUCFF), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anna Carolina Carvalho da Fonseca
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | | | | | - Sylvie Devalle
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Paulo Niemeyer Soares Filho
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vivaldo Moura-Neto
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Anatomia Patológica, Hospital Universitário Clementino Fraga Filho (HUCFF), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Vivaldo Moura-Neto,
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Haixia X, de Barros AODS, e Mello FDVC, Sozzi-Guo F, Müller C, Gemini-Piperni S, Alencar LMR, Maia FF, Freire VN, de Menezes FD, Aran V, Devalle S, Moura-Neto V, Ricci-Junior E, Bouskela E, Pikula K, Golokhvast K, Santos-Oliveira R. Graphene: Insights on Biological, Radiochemical and Ecotoxicological Aspects. J Biomed Nanotechnol 2021; 17:131-148. [DOI: 10.1166/jbn.2021.3006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Graphene, including graphene quantum dots, its oxide and unoxidized forms (pure graphene) have several properties, like fluorescence, electrical conductivity, theoretical surface area, low toxicity, and high biocompatibility. In this study, we evaluated genotoxicity (in silico
analysis using the functional density theory-FDT), cytotoxicity (human glioblastoma cell line), in vivo pharmacokinetics, in vivo impact on microcirculation and cell internalization assay. It was also radiolabeled with lutetium 177 (177Lu), a beta emitter radioisotope to explore
its therapeutic use as nanodrug. Finally, the impact of its disposal in the environment was analyzed using ecotoxicological evaluation. FDT analysis demonstrated that graphene can construct covalent and non-covalent bonds with different nucleobases, and graphene oxide is responsible for generation
of reactive oxygen species (ROS), corroborating its genotoxicity. On the other hand, non-cytotoxic effect on glioblastoma cells could be demonstrated. The pharmacokinetics analysis showed high plasmatic concentration and clearance. Topical application of 0.1 and 1 mg/kg of graphene nanoparticles
on the hamster skinfold preparation did not show inflammatory effect. The cell internalization assay showed that 1-hour post contact with cells, graphene can cross the plasmatic membrane and accumulate in the cytoplasm. Radio labeling with 177Lu is possible and its use as therapeutic nanosystem
is viable. Finally, the ecotoxicity analysis showed that A. silina exposed to graphene showed pronounced uptake and absorption in the nauplii gut and formation of ROS. The data obtained showed that although being formed exclusively of carbon and carbon-oxygen, graphene and graphene
oxide respectively generate somewhat contradictory results and more studies should be performed to certify the safety use of this nanoplatform.
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DosSantos MF, Devalle S, Aran V, Capra D, Roque NR, Coelho-Aguiar JDM, Spohr TCLDSE, Subilhaga JG, Pereira CM, D'Andrea Meira I, Niemeyer Soares Filho P, Moura-Neto V. Neuromechanisms of SARS-CoV-2: A Review. Front Neuroanat 2020; 14:37. [PMID: 32612515 PMCID: PMC7308495 DOI: 10.3389/fnana.2020.00037] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [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: 05/02/2020] [Accepted: 06/03/2020] [Indexed: 12/14/2022] Open
Abstract
Recent studies have suggested the neuroinvasive potential of severe acute respiratory coronavirus 2 (SARS-CoV-2). Notably, neuroinvasiveness might be involved in the pathophysiology of coronavirus disease 2019 (COVID-19). Some studies have demonstrated that synapse-connected routes may enable coronaviruses to access the central nervous system (CNS). However, evidence related to the presence of SARS-CoV-2 in the CNS, its direct impact on the CNS, and the contribution to symptoms suffered, remain sparse. Here, we review the current literature that indicates that SARS-CoV-2 can invade the nervous system. We also describe the neural circuits that are potentially affected by the virus and their possible role in the progress of COVID-19. In addition, we propose several strategies to understand, diagnose, and treat the neurological symptoms of COVID-19.
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Affiliation(s)
- Marcos F. DosSantos
- Laboratório de Morfogênese Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Medicina (Radiologia), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Brazil
| | - Sylvie Devalle
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Veronica Aran
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Daniela Capra
- Laboratório de Morfogênese Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Natália Roberta Roque
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Juliana de Mattos Coelho-Aguiar
- Laboratório de Morfogênese Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tânia Cristina Leite de Sampaio e Spohr
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Anatomia Patológica, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Janice Gonçalves Subilhaga
- Setor de Pneumologia, Serviço de Clínica Médica, Hospital Federal dos Servidores do Estado, Rio de Janeiro, Brazil
| | - Cláudia Maria Pereira
- Programa de Pós-Graduação em Biomedicina Translacional e Odontologia Clínica e Experimental, Universidade do Grande Rio (Unigranrio), Duque de Caxias, Brazil
| | - Isabella D'Andrea Meira
- Departamento de Neurologia, Universidade Federal Fluminense, Niterói, Brazil
- Programa de Epilepsia do Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | | | - Vivaldo Moura-Neto
- Laboratório de Morfogênese Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Anatomia Patológica, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Estadual do Cérebro Paulo Niemeyer, Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
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Trindade P, Loiola EC, Gasparotto J, Ribeiro CT, Cardozo PL, Devalle S, Salerno JA, Ornelas IM, Ledur PF, Ribeiro FM, Ventura ALM, Moreira JCF, Gelain DP, Porciúncula LO, Rehen SK. Short and long TNF‐alpha exposure recapitulates canonical astrogliosis events in human‐induced pluripotent stem cells‐derived astrocytes. Glia 2020; 68:1396-1409. [DOI: 10.1002/glia.23786] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 12/17/2019] [Accepted: 01/14/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Pablo Trindade
- Instituto D'Or de Pesquisa e Ensino (IDOR) Rio de Janeiro Brazil
- Pós‐Graduação em Biologia Molecular e CelularUniversidade Federal do Estado do Rio de Janeiro Rio de Janeiro Brazil
| | | | - Juciano Gasparotto
- Departamento de BioquímicaInstituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Camila Tiefensee Ribeiro
- Departamento de BioquímicaInstituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Pablo Leal Cardozo
- Departamento de Bioquímica e ImunologiaUniversidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Sylvie Devalle
- Instituto D'Or de Pesquisa e Ensino (IDOR) Rio de Janeiro Brazil
| | | | | | | | - Fabiola Mara Ribeiro
- Departamento de Bioquímica e ImunologiaUniversidade Federal de Minas Gerais Belo Horizonte Brazil
| | | | - José Claudio Fonseca Moreira
- Departamento de BioquímicaInstituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Daniel Pens Gelain
- Departamento de BioquímicaInstituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Lisiane Oliveira Porciúncula
- Departamento de BioquímicaInstituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
| | - Stevens Kastrup Rehen
- Instituto D'Or de Pesquisa e Ensino (IDOR) Rio de Janeiro Brazil
- Instituto de Ciências BiomédicasUniversidade Federal do Rio de Janeiro Rio de Janeiro Brazil
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Ledur PF, Karmirian K, Pedrosa CDSG, Souza LRQ, Assis-de-Lemos G, Martins TM, Ferreira JDCCG, de Azevedo Reis GF, Silva ES, Silva D, Salerno JA, Ornelas IM, Devalle S, Madeiro da Costa RF, Goto-Silva L, Higa LM, Melo A, Tanuri A, Chimelli L, Murata MM, Garcez PP, Filippi-Chiela EC, Galina A, Borges HL, Rehen SK. Zika virus infection leads to mitochondrial failure, oxidative stress and DNA damage in human iPSC-derived astrocytes. Sci Rep 2020; 10:1218. [PMID: 31988337 PMCID: PMC6985105 DOI: 10.1038/s41598-020-57914-x] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [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: 08/06/2019] [Accepted: 01/02/2020] [Indexed: 12/14/2022] Open
Abstract
Zika virus (ZIKV) has been extensively studied since it was linked to congenital malformations, and recent research has revealed that astrocytes are targets of ZIKV. However, the consequences of ZIKV infection, especially to this cell type, remain largely unknown, particularly considering integrative studies aiming to understand the crosstalk among key cellular mechanisms and fates involved in the neurotoxicity of the virus. Here, the consequences of ZIKV infection in iPSC-derived astrocytes are presented. Our results show ROS imbalance, mitochondrial defects and DNA breakage, which have been previously linked to neurological disorders. We have also detected glial reactivity, also present in mice and in post-mortem brains from infected neonates from the Northeast of Brazil. Given the role of glia in the developing brain, these findings may help to explain the observed effects in congenital Zika syndrome related to neuronal loss and motor deficit.
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Affiliation(s)
| | - Karina Karmirian
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | | | - Gabriela Assis-de-Lemos
- Institute of Medical Biochemistry Leopoldo De Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thiago Martino Martins
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Gabriel Ferreira de Azevedo Reis
- Insitute of Biology, Department of Biophysics and Biometrics, State University of Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Eduardo Santos Silva
- Insitute of Biology, Department of Biophysics and Biometrics, State University of Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Débora Silva
- Laboratory of Neuropathology, State Institute of Brain Paulo Niemeyer, Rio de Janeiro, RJ, Brazil
| | - José Alexandre Salerno
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Sylvie Devalle
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
| | | | - Livia Goto-Silva
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
| | - Luiza Mendonça Higa
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Adriana Melo
- Research Institute Prof. Joaquim Amorim Neto (IPESQ), Campina Grande, PB, Brazil
| | - Amilcar Tanuri
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Leila Chimelli
- Laboratory of Neuropathology, State Institute of Brain Paulo Niemeyer, Rio de Janeiro, RJ, Brazil
| | - Marcos Massao Murata
- Insitute of Biology, Department of Biophysics and Biometrics, State University of Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Patrícia Pestana Garcez
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Antonio Galina
- Institute of Medical Biochemistry Leopoldo De Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Helena Lobo Borges
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Stevens Kastrup Rehen
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil.
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
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7
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Gomez Limia CE, Devalle S, Reis M, Sochacki J, Carneiro M, Madeiro da Costa R, D'Andrea M, Padilha T, Zalcberg IR, Solza C, Daumas A, Rehen S, Monte-Mór B, Bonamino MH. Generation and characterization of a human induced pluripotent stem (iPS) cell line derived from an acute myeloid leukemia patient evolving from primary myelofibrosis carrying the CALR 52bp deletion and the ASXL1 p.R693X mutation. Stem Cell Res 2017; 24:16-20. [PMID: 29034885 DOI: 10.1016/j.scr.2017.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 07/26/2017] [Accepted: 08/03/2017] [Indexed: 01/14/2023] Open
Abstract
Peripheral blood sample was donated by a 61years old female patient diagnosed with acute myeloid leukemia secondary to a primary myelofibrosis harboring the 52-bp deletion in the CALR gene (c.1092_1143del, p.L367fs*46) and the R693X mutation in the ASXL1 gene (c.2077C>T, p.R693X). CD34+ cells were isolated from the sample and subjected to the reprogramming procedure by using the Sendai virus carrying the reprogramming factors Oct3/4, Sox2, Klf4 and c-Myc. iPS colonies generated retained the original mutations and displayed all the features of bona fide iPS cells.
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Affiliation(s)
- Cintia E Gomez Limia
- Molecular Carcinogenesis Program, Research Coordination, Brazilian National Cancer Institute (INCA), Rua André Cavalcante 37, Rio de Janeiro 20230-240, Brazil
| | - Sylvie Devalle
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro 30, Rio de Janeiro 22281-100, Brazil
| | - Marcelo Reis
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro 30, Rio de Janeiro 22281-100, Brazil
| | - Jaroslaw Sochacki
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro 30, Rio de Janeiro 22281-100, Brazil
| | - Mayra Carneiro
- Molecular Carcinogenesis Program, Research Coordination, Brazilian National Cancer Institute (INCA), Rua André Cavalcante 37, Rio de Janeiro 20230-240, Brazil
| | - Rodrigo Madeiro da Costa
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro 30, Rio de Janeiro 22281-100, Brazil
| | - Mariana D'Andrea
- Laboratory of Molecular Biology, Bone Marrow Transplant Center (CEMO), Brazilian National Cancer Institute (INCA), Praça Cruz Vermelha, 23, Rio de Janeiro 20230-130, Brazil
| | - Telma Padilha
- Laboratory of Molecular Biology, Bone Marrow Transplant Center (CEMO), Brazilian National Cancer Institute (INCA), Praça Cruz Vermelha, 23, Rio de Janeiro 20230-130, Brazil
| | - Ilana R Zalcberg
- Laboratory of Molecular Biology, Bone Marrow Transplant Center (CEMO), Brazilian National Cancer Institute (INCA), Praça Cruz Vermelha, 23, Rio de Janeiro 20230-130, Brazil
| | - Cristiana Solza
- Pedro Ernesto University Hospital (HUPE), University of the State of Rio de Janeiro (UERJ), Boulevard 28 de Setembro, 77, Rio de Janeiro 20551-030, Brazil
| | - Adelmo Daumas
- Antônio Pedro University Hospital (HUAP), Fluminense Federal University (UFF), Rua Marques de Paraná, 303, Niterói 24033-900, Brazil
| | - Stevens Rehen
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro 30, Rio de Janeiro 22281-100, Brazil; Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Avenida Carlos Chagas 373, Rio de Janeiro 21941-590, Brazil
| | - Bárbara Monte-Mór
- Laboratory of Molecular Biology, Bone Marrow Transplant Center (CEMO), Brazilian National Cancer Institute (INCA), Praça Cruz Vermelha, 23, Rio de Janeiro 20230-130, Brazil.
| | - Martín H Bonamino
- Molecular Carcinogenesis Program, Research Coordination, Brazilian National Cancer Institute (INCA), Rua André Cavalcante 37, Rio de Janeiro 20230-240, Brazil; FIOCRUZ - Oswaldo Cruz Foundation Institute, Avenida Brasil 4365 - Manguinhos, Rio de Janeiro 21040-360, Brazil.
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8
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Sochacki J, Devalle S, Reis M, Mattos P, Rehen S. Generation of urine iPS cell lines from patients with Attention Deficit Hyperactivity Disorder (ADHD) using a non-integrative method. Stem Cell Res 2016; 17:102-106. [DOI: 10.1016/j.scr.2016.05.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 05/23/2016] [Indexed: 10/21/2022] Open
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9
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Sochacki J, Devalle S, Reis M, Fontenelle LF, Rehen S. Generation of urine iPS cell line from a patient with obsessive-compulsive disorder using a non-integrative method. Stem Cell Res 2016; 17:107-110. [PMID: 27558612 DOI: 10.1016/j.scr.2016.05.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 05/23/2016] [Indexed: 01/19/2023] Open
Affiliation(s)
- Jaroslaw Sochacki
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Sylvie Devalle
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Marcelo Reis
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Leonardo F Fontenelle
- Obsessive, Compulsive, and Anxiety Spectrum Program, Institute of Psychiatry of the Federal University of Rio de Janeiro, Brazil; Monash Institute of Clinical and Cognitive Neurosciences, Monash University, Melbourne, Australia; D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Stevens Rehen
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil; Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Avenida Carlos Chagas, 373, Rio de Janeiro 21941, Brazil
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10
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Sochacki J, Devalle S, Reis M, de Moraes Maciel R, da Silveira Paulsen B, Brentani H, Belmonte-de-Abreu PS, Rehen S. Generation of iPS cell lines from schizophrenia patients using a non-integrative method. Stem Cell Res 2016; 17:97-101. [PMID: 27558610 DOI: 10.1016/j.scr.2016.05.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 05/23/2016] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jaroslaw Sochacki
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Sylvie Devalle
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Marcelo Reis
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Renata de Moraes Maciel
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil
| | - Bruna da Silveira Paulsen
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Avenida Carlos Chagas, 373, Rio de Janeiro 21941, Brazil
| | - Helena Brentani
- Department of Psychiatry, Faculty of Medicine, São Paulo University (USP), Avenida Doutor Arnaldo, 455 - Cerqueira César, 01246-903 São Paulo, Brazil; Laboratory of Medical Investigation, Faculty of Medicine, São Paulo University (USP), Avenida Doutor Arnaldo, 455 - Cerqueira César, 01246-903 São Paulo, Brazil
| | - Paulo Silva Belmonte-de-Abreu
- Department of Psychiatry, Faculty of Medicine, Federal University of Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos 2400 - Floresta, Porto Alegre 90035-002, Brazil
| | - Stevens Rehen
- D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Rio de Janeiro 222281, Brazil; Institute of Biomedical Sciences, Federal University of Rio de Janeiro (UFRJ), Avenida Carlos Chagas, 373, Rio de Janeiro 21941, Brazil
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Souza CS, Paulsen BS, Devalle S, Lima Costa S, Borges HL, Rehen SK. Commitment of human pluripotent stem cells to a neural lineage is induced by the pro-estrogenic flavonoid apigenin. ACTA ACUST UNITED AC 2015. [DOI: 10.3402/arb.v2.29244] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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12
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Pagotto A, Caballero OL, Volkmar N, Devalle S, Simpson AJG, Lu X, Christianson JC. Centrosomal localisation of the cancer/testis (CT) antigens NY-ESO-1 and MAGE-C1 is regulated by proteasome activity in tumour cells. PLoS One 2013; 8:e83212. [PMID: 24340093 PMCID: PMC3858345 DOI: 10.1371/journal.pone.0083212] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 08/08/2013] [Accepted: 10/31/2013] [Indexed: 02/03/2023] Open
Abstract
The Cancer/Testis (CT) antigen family of genes are transcriptionally repressed in most human tissues but are atypically re-expressed in many malignant tumour types. Their restricted expression profile makes CT antigens ideal targets for cancer immunotherapy. As little is known about whether CT antigens may be regulated by post-translational processing, we investigated the mechanisms governing degradation of NY-ESO-1 and MAGE-C1 in selected cancer cell lines. Inhibitors of proteasome-mediated degradation induced the partitioning of NY-ESO-1 and MAGE-C1 into a detergent insoluble fraction. Moreover, this treatment also resulted in increased localisation of NY-ESO-1 and MAGE-C1 at the centrosome. Despite their interaction, relocation of either NY-ESO-1 or MAGE-C1 to the centrosome could occur independently of each other. Using a series of truncated fragments, the regions corresponding to NY-ESO-191-150 and MAGE-C1900-1116 were established as important for controlling both stability and localisation of these CT antigens. Our findings demonstrate that the steady state levels of NY-ESO-1 and MAGE-C1 are regulated by proteasomal degradation and that both behave as aggregation-prone proteins upon accumulation. With proteasome inhibitors being increasingly used as front-line treatment in cancer, these data raise issues about CT antigen processing for antigenic presentation and therefore immunogenicity in cancer patients.
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Affiliation(s)
- Anna Pagotto
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Headington, Oxford, United Kingdom
| | - Otavia L. Caballero
- Ludwig Collaborative Group, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Norbert Volkmar
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Headington, Oxford, United Kingdom
| | - Sylvie Devalle
- Ludwig Institute for Cancer Research, New York Branch at Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Andrew J. G. Simpson
- Ludwig Collaborative Group, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Xin Lu
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Headington, Oxford, United Kingdom
- * E-mail:
| | - John C. Christianson
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Headington, Oxford, United Kingdom
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13
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Sompallae R, Hofmann O, Maher CA, Gedye C, Behren A, Vitezic M, Daub CO, Devalle S, Caballero OL, Carninci P, Hayashizaki Y, Lawlor ER, Cebon J, Hide W. A comprehensive promoter landscape identifies a novel promoter for CD133 in restricted tissues, cancers, and stem cells. Front Genet 2013; 4:209. [PMID: 24194746 PMCID: PMC3810939 DOI: 10.3389/fgene.2013.00209] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 07/08/2013] [Accepted: 09/30/2013] [Indexed: 12/02/2022] Open
Abstract
PROM1 is the gene encoding prominin-1 or CD133, an important cell surface marker for the isolation of both normal and cancer stem cells. PROM1 transcripts initiate at a range of transcription start sites (TSS) associated with distinct tissue and cancer expression profiles. Using high resolution Cap Analysis of Gene Expression (CAGE) sequencing we characterize TSS utilization across a broad range of normal and developmental tissues. We identify a novel proximal promoter (P6) within CD133+ melanoma cell lines and stem cells. Additional exon array sampling finds P6 to be active in populations enriched for mesenchyme, neural stem cells and within CD133+ enriched Ewing sarcomas. The P6 promoter is enriched with respect to previously characterized PROM1 promoters for a HMGI/Y (HMGA1) family transcription factor binding site motif and exhibits different epigenetic modifications relative to the canonical promoter region of PROM1.
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Devalle S, Sartore RC, Paulsen BS, Borges HL, Martins RAP, Rehen SK. Implications of aneuploidy for stem cell biology and brain therapeutics. Front Cell Neurosci 2012; 6:36. [PMID: 22973193 PMCID: PMC3433681 DOI: 10.3389/fncel.2012.00036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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: 06/21/2012] [Accepted: 08/18/2012] [Indexed: 12/29/2022] Open
Abstract
Understanding the cellular basis of neurological disorders have advanced at a slow pace, especially due to the extreme invasiveness of brain biopsying and limitations of cell lines and animal models that have been used. Since the derivation of pluripotent stem cells (PSCs), a novel source of cells for regenerative medicine and disease modeling has become available, holding great potential for the neurology field. However, safety for therapy and accurateness for modeling have been a matter of intense debate, considering that genomic instability, including the gain and loss of chromosomes (aneuploidy), has been repeatedly observed in those cells. Despite the fact that recent reports have described some degree of aneuploidy as being normal during neuronal differentiation and present in healthy human brains, this phenomenon is particularly controversial since it has traditionally been associated with cancer and disabling syndromes. It is therefore necessary to appreciate, to which extent, aneuploid pluripotent stem cells are suitable for regenerative medicine and neurological modeling and also the limits that separate constitutive from disease-related aneuploidy. In this review, recent findings regarding chromosomal instability in PSCs and within the brain will be discussed.
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Affiliation(s)
- Sylvie Devalle
- National Laboratory for Embryonic Stem Cells, Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, RJ, Brazil
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Costa MRD, Costa IPD, Devalle S, Castro ARCMD, Freitas SZ. Prevalência e diversidade genética do torque teno vírus em pacientes com lúpus eritematoso sistêmico em serviço de referência no Mato Grosso do Sul. Rev Bras Reumatol 2012. [DOI: 10.1590/s0482-50042012000100006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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16
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Costa MRD, Costa IPD, Devalle S, Castro ARCMD, Freitas SZ. Prevalence and genetic diversity of torque teno virus in patients with systemic lupus erythematosus in a reference service in Mato Grosso do Sul. Rev Bras Reumatol 2012; 52:49-54. [PMID: 22286645] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2011] [Accepted: 11/02/2011] [Indexed: 05/31/2023] Open
Abstract
UNLABELLED Recent studies on the torque teno virus (TTV), genus Anellovirus, have allowed formulating the hypothesis that TTV may trigger autoimmune rheumatic diseases or have some pathogenic role in them. OBJECTIVES To determine the frequency of TTV infection in patients with systemic lupus erythematosus (SLE), the genetic diversity of TTV, the correlation between TTV infection and SLE clinical manifestations, and SLE clinical course and serological profile. PATIENTS AND METHODS Serum samples were obtained from 46 SLE patients treated at the University-Affiliated Hospital of Campo Grande (NHU/FAMED/UFMS), Brazil. For controls, serum samples were obtained from 46 healthy volunteer blood donors. Viral DNA was extracted from samples using the QIAamp DNA Blood Mini Kit (QIAGEN, Hilden, Germany) and amplified using nested PCR. RESULTS Positivity for TTV was found in 17 (37%) of SLE patients and in only seven (15.2%) of the controls (z test, P = 0.03). There was no correlation between TTV infection, SLE clinical manifestations, SLE clinical course, and the serological profile of the patients evaluated. CONCLUSION Further studies on the presence of TTV in SLE patients are required.
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Galante PAF, Parmigiani RB, Zhao Q, Caballero OL, de Souza JE, Navarro FCP, Gerber AL, Nicolás MF, Salim ACM, Silva APM, Edsall L, Devalle S, Almeida LG, Ye Z, Kuan S, Pinheiro DG, Tojal I, Pedigoni RG, de Sousa RGMA, Oliveira TYK, de Paula MG, Ohno-Machado L, Kirkness EF, Levy S, da Silva WA, Vasconcelos ATR, Ren B, Zago MA, Strausberg RL, Simpson AJG, de Souza SJ, Camargo AA. Distinct patterns of somatic alterations in a lymphoblastoid and a tumor genome derived from the same individual. Nucleic Acids Res 2011; 39:6056-68. [PMID: 21493686 PMCID: PMC3152357 DOI: 10.1093/nar/gkr221] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [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] [Indexed: 11/12/2022] Open
Abstract
Although patterns of somatic alterations have been reported for tumor genomes, little is known on how they compare with alterations present in non-tumor genomes. A comparison of the two would be crucial to better characterize the genetic alterations driving tumorigenesis. We sequenced the genomes of a lymphoblastoid (HCC1954BL) and a breast tumor (HCC1954) cell line derived from the same patient and compared the somatic alterations present in both. The lymphoblastoid genome presents a comparable number and similar spectrum of nucleotide substitutions to that found in the tumor genome. However, a significant difference in the ratio of non-synonymous to synonymous substitutions was observed between both genomes (P = 0.031). Protein-protein interaction analysis revealed that mutations in the tumor genome preferentially affect hub-genes (P = 0.0017) and are co-selected to present synergistic functions (P < 0.0001). KEGG analysis showed that in the tumor genome most mutated genes were organized into signaling pathways related to tumorigenesis. No such organization or synergy was observed in the lymphoblastoid genome. Our results indicate that endogenous mutagens and replication errors can generate the overall number of mutations required to drive tumorigenesis and that it is the combination rather than the frequency of mutations that is crucial to complete tumorigenic transformation.
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Affiliation(s)
- Pedro A F Galante
- Ludwig Institute for Cancer Research, São Paulo Branch at Hospital Alemão Oswaldo Cruz, São Paulo 01323-903, Brazil
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Abstract
Torque teno virus (TTV) is a circular, single-stranded DNA virus that chronically infects healthy individuals of all ages worldwide. TTV has an extreme genetic heterogeneity which is reflected in its current classification into five main phylogenetic groups (1-5). Using specific PCR assays, it has been shown that many individuals are co-infected with TTV isolates belonging to different phylogenetic groups. Here, a multiplex PCR assay was developed, using five recombinant plasmids. Each plasmid carried an insert of different size issued from a TTV isolate belonging to a different group. The assay was able to simultaneously amplify DNAs of TTV isolates belonging to all five phylogenetic groups. Multiplex PCR was then tested satisfactorily on DNAs extracted from 55 serum samples (47 health care workers and 8 AIDS patients). All individuals but nine were infected with at least one TTV isolate. Co-infection with multiple isolates was found in 29/47 (62%) health care workers and in 8/8 (100%) AIDS patients. A number of discrepancies were observed when results obtained with three thermostable DNA polymerases were compared. For example, four TTV phylogenetic groups were detected in a particular serum sample by using one of the three DNA polymerases, whereas the other two enzymes were able to detect only three TTV groups. However, none of the three enzymes used could be broadly considered to be more efficient than the others. Despite its limitations, the assay described here constitutes a suitable tool to visualize the degree of co-infection of a given population, avoiding time-consuming experiments.
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Affiliation(s)
- S Devalle
- Departamento de Virologia, Instituto Oswaldo Cruz, FIOCRUZ, 21040-900 Rio de Janeiro, RJ, Brasil
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Niel C, Diniz-Mendes L, Devalle S. Rolling-circle amplification of Torque teno virus (TTV) complete genomes from human and swine sera and identification of a novel swine TTV genogroup. J Gen Virol 2005; 86:1343-1347. [PMID: 15831945 DOI: 10.1099/vir.0.80794-0] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Multiply primed rolling-circle amplification is a novel technology that uses bacteriophage phi29 DNA polymerase to amplify circular DNA molecules, without the need for prior knowledge of their sequences. In an attempt to detectTorque teno virus(TTV), rolling-circle amplification was used to amplify DNA extracted from eight human and four pig serum samples. All samples gave high molecular weight (>30 kb) amplification products. By restriction endonuclease digestion, these products generated DNA fragments whose sizes were consistent with those of human TTV (3·8 kb) and swine TTV (Sd-TTV; 2·9 kb) genomes. Two TTV isolates derived from a single AIDS patient, as well as two Sd-TTV isolates derived from a single pig, were characterized by complete nucleotide sequencing. One of the Sd-TTV isolates showed very low (43–45 %) nucleotide sequence similarity to the other Sd-TTV isolate and to the prototype isolate Sd-TTV31, and could be considered the prototype of a novel genogroup.
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Affiliation(s)
- Christian Niel
- Department of Virology, Oswaldo Cruz Institute, Avenida Brasil 4365, 21040-900 Rio de Janeiro, RJ, Brazil
| | - Leonardo Diniz-Mendes
- Department of Virology, Oswaldo Cruz Institute, Avenida Brasil 4365, 21040-900 Rio de Janeiro, RJ, Brazil
| | - Sylvie Devalle
- Department of Virology, Oswaldo Cruz Institute, Avenida Brasil 4365, 21040-900 Rio de Janeiro, RJ, Brazil
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Abstract
SEN virus (SENV) is a circular, single stranded DNA virus that has been first characterized in the serum of a human immunodeficiency virus type 1 (HIV-1)-infected patient. Eight genotypes of SENV (A-H) have been identified and further recognized as variants of TT virus (TTV) in the family Circoviridae. Here we describe the first genomic characterization of a SENV isolate (5-A) from South America. Using 'universal' primers, able to amplify most, if not all, TTV/SENV genotypes, a segment of > 3 kb was amplified by polymerase chain reaction from the serum of an HIV-1 infected patient. The amplicon was cloned and a 3087-nucleotide sequence was determined, that showed a high (85%) homology with the sequence of the Italian isolate SENV-F. Proteins encoded by open reading frames (ORFs) 1 to 4 consisted of 758, 129, 276, and 267 amino acids, respectively. By phylogenetic analysis, isolate 5-A was classified into TTV genotype 19 (phylogenetic group 3), together with SENV-F and TTV isolate SAa-38.
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Affiliation(s)
- Leonardo Diniz-Mendes
- Departamento de Virologia, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
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Abstract
OBJECTIVE HAV infection in patients with pre-existing chronic liver disease has been associated with increased rate of fulminant hepatitis and mortality. The aim of this study was to investigate the presence of serological and molecular HAV markers in a population of HCV infected patients. PATIENTS AND METHODS The presence of total and IgM anti-HAV antibodies was investigated in 197 patients (mean age 44.8+/-12.5 years) referred to the Brazilian Reference Center for Viral Hepatitis and who tested positive for anti-HCV antibodies and HCV RNA. HAV RNA was investigated by reverse transcription-nested PCR in these patients.Results. One hundred seventy patients (86%) had total, but not IgM anti-HAV antibodies, being therefore, immune to hepatitis A, while 27 (14%) were not. A high proportion (6/27, 22%) of the susceptible patients presented markers of recent HAV infection: One patient was IgM anti-HAV positive, three were HAV RNA positive, and two presented both markers. By nucleotide sequencing, it was demonstrated that the HAV isolates infecting these patients belonged to subgenotypes 1A and 1B. CONCLUSIONS Superinfection with HAV was a common event in the group of HCV infected patients under study. Implementation of hepatitis A vaccination should be considered for this population.
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Affiliation(s)
- S Devalle
- Department of Virology, Oswaldo Cruz Institute, Avenida Brasil 4365, Rio de Janeiro, RJ 21045-900, Brazil
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Abstract
Human isolates of the highly prevalent TT virus (TTV) have been classified into five major genomic groups (1-5). The geographical distribution of the groups throughout the world is not well known. Five different PCR assays were developed in an attempt to amplify specifically TTV DNAs of each genomic group. Serum samples collected from 72 Brazilian adults (24 voluntary blood donors, 24 hepatitis B virus (HBV) carriers, and 24 human immunodeficiency virus type 1 (HIV-1)-infected patients) were tested. TTV DNA from at least one genomic group was detected in 11 (46%) blood donors, 13 (54%) HBV carriers, and 24 (100%) HIV-1 patients. All five genomic groups were detected in the three populations, with the exception of group 2 in blood donors. Some samples, negative with all five specific assays, were positive with the commonly used untranslated region (UTR) PCR system. On the other hand, TTV DNA was detected in some samples by using specific assays but not with the UTR PCR. Mixed infections with 2-5 TTV isolates from different groups were detected in 21% blood donors, 29% HBV carriers, and 71% HIV-1 patients. Fifteen PCR products (three obtained with each assay) were sequenced. Most sequences showed high (>86%) homology with those of TTV isolates belonging to their presumed groups. However, three sequences had low homology with all TTV sequences available from the DNA databanks. In conclusion, TTV isolates belonging to all five known genomic groups circulate in Brazil, and the results suggest the existence of new and as yet uncharacterised major genomic groups.
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Affiliation(s)
- Sylvie Devalle
- Department of Virology, Oswaldo Cruz Institute, Rio de Janeiro, Brazil
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