Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle
- Autores
- Balestrasse, Malena; Massimino Stepñicka, Milena; Alonso, Guillermo Daniel; Ocampo, Josefina
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Trypanosome cruzi, the ethiologic agent of Chagas Disease, affects a large number of the population in Latin America. It has a complex life cycle alternating between a mammalian host and the vector insect, Triatoma infestans. This cycle consists of three well-defined stages: amastigotes, epimastigotes and trypomastigotes. When the parasite faces different environments, it requires changes in gene expression in order to survive. Hence, gene expression regulation modulated by chromatin organization might be a key aspect to understand adaptation. Despite Trypanosomes gene expression is mainly regulated post transcriptionally, there are evidences that chromatin influence gene expression regulation. Recent studies have shown that homologues DOT1 methyltransferases, called DOT1a and DOT1b, are involved in the methylation of lysine 76 of histone H3 in T. cruzi. In T. brucei, DOT1a mediates H3K76 mono and di-methylation, whereas DOT1b also catalyzes H3K76 tri-methylation. However, these two enzymes remain poorly characterized.In this project, we intend to characterize the enzymatic activity and study the relevance of TcDOT1a and TcDOT1b during cell cycle and the metacytogenesis process. Therefore, to evaluate the catalytic activity using, we have successfully cloned and transformed a null DOT1 yeast strain with TcDOT1a. We are currently evaluating heterologous complementation. Simultaneously, we are working on TcDOT1b. Additionally, to analyze the isoforms subcelular location and their effects on cell cycle progression and differentiation, we have cloned the TcDOT1 isoforms in a pRibotex vector with an N-terminal HA-tag and transfected CL-Brener strain. Unfortunately, it resulted toxic for the cell. We are currently switching to use an inducible vector. Overall, our data will be useful to further understand the role of the DOT1 isoforms and the differential methylation of H3K76 in T. cruzi. In the long term, our findings might unravel new targets search for antiparasitic drugs.
Fil: Balestrasse, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
Fil: Massimino Stepñicka, Milena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
Fil: Alonso, Guillermo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
Fil: Ocampo, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
Reunión Anual de Sociedades de Biociencias 2019; LXIV Reunión Anual de la Sociedad Argentina de Investigación Clínica; LI Reunión Anual de la Asociación Argentina de Farmacología Experimenta; XXI Reunión Anual de la Sociedad Argentina de Biología; XXXI Reunión Anual de la Sociedad Argentina de Protozoología; IX Reunión Anual de la Asociación Argentina de Nanomedicinas; VI Reunión Científica Regional de la Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio
Mar del Plata
Argentina
Sociedad Argentina de Investigación Clínica
Asociación Argentina de Farmacología Experimental
Sociedad Argentina de Biología
Sociedad Argentina de Protozoología
Asociación Argentina de Nanomedicinas
Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio - Materia
-
CHROMATIN
TRYPANOSOMES
DOT1
EPIGENETICS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/201691
Ver los metadatos del registro completo
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Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycleBalestrasse, MalenaMassimino Stepñicka, MilenaAlonso, Guillermo DanielOcampo, JosefinaCHROMATINTRYPANOSOMESDOT1EPIGENETICShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Trypanosome cruzi, the ethiologic agent of Chagas Disease, affects a large number of the population in Latin America. It has a complex life cycle alternating between a mammalian host and the vector insect, Triatoma infestans. This cycle consists of three well-defined stages: amastigotes, epimastigotes and trypomastigotes. When the parasite faces different environments, it requires changes in gene expression in order to survive. Hence, gene expression regulation modulated by chromatin organization might be a key aspect to understand adaptation. Despite Trypanosomes gene expression is mainly regulated post transcriptionally, there are evidences that chromatin influence gene expression regulation. Recent studies have shown that homologues DOT1 methyltransferases, called DOT1a and DOT1b, are involved in the methylation of lysine 76 of histone H3 in T. cruzi. In T. brucei, DOT1a mediates H3K76 mono and di-methylation, whereas DOT1b also catalyzes H3K76 tri-methylation. However, these two enzymes remain poorly characterized.In this project, we intend to characterize the enzymatic activity and study the relevance of TcDOT1a and TcDOT1b during cell cycle and the metacytogenesis process. Therefore, to evaluate the catalytic activity using, we have successfully cloned and transformed a null DOT1 yeast strain with TcDOT1a. We are currently evaluating heterologous complementation. Simultaneously, we are working on TcDOT1b. Additionally, to analyze the isoforms subcelular location and their effects on cell cycle progression and differentiation, we have cloned the TcDOT1 isoforms in a pRibotex vector with an N-terminal HA-tag and transfected CL-Brener strain. Unfortunately, it resulted toxic for the cell. We are currently switching to use an inducible vector. Overall, our data will be useful to further understand the role of the DOT1 isoforms and the differential methylation of H3K76 in T. cruzi. In the long term, our findings might unravel new targets search for antiparasitic drugs.Fil: Balestrasse, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Massimino Stepñicka, Milena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Alonso, Guillermo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Ocampo, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaReunión Anual de Sociedades de Biociencias 2019; LXIV Reunión Anual de la Sociedad Argentina de Investigación Clínica; LI Reunión Anual de la Asociación Argentina de Farmacología Experimenta; XXI Reunión Anual de la Sociedad Argentina de Biología; XXXI Reunión Anual de la Sociedad Argentina de Protozoología; IX Reunión Anual de la Asociación Argentina de Nanomedicinas; VI Reunión Científica Regional de la Asociación Argentina de Ciencia y Tecnología de Animales de LaboratorioMar del PlataArgentinaSociedad Argentina de Investigación ClínicaAsociación Argentina de Farmacología ExperimentalSociedad Argentina de BiologíaSociedad Argentina de ProtozoologíaAsociación Argentina de NanomedicinasAsociación Argentina de Ciencia y Tecnología de Animales de LaboratorioMedicina (Buenos Aires)Costas, Monica AlejandraMarino, Gabriela InésAzurmendi, Pablo Javier2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/201691Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle; Reunión Anual de Sociedades de Biociencias 2019; LXIV Reunión Anual de la Sociedad Argentina de Investigación Clínica; LI Reunión Anual de la Asociación Argentina de Farmacología Experimenta; XXI Reunión Anual de la Sociedad Argentina de Biología; XXXI Reunión Anual de la Sociedad Argentina de Protozoología; IX Reunión Anual de la Asociación Argentina de Nanomedicinas; VI Reunión Científica Regional de la Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio; Mar del Plata; Argentina; 2019; 124-1250025-76801669-9106CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://medicinabuenosaires.com/revistas/vol79-19/s4/vol79_s4.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:45:51Zoai:ri.conicet.gov.ar:11336/201691instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:45:52.258CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
title |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
spellingShingle |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle Balestrasse, Malena CHROMATIN TRYPANOSOMES DOT1 EPIGENETICS |
title_short |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
title_full |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
title_fullStr |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
title_full_unstemmed |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
title_sort |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle |
dc.creator.none.fl_str_mv |
Balestrasse, Malena Massimino Stepñicka, Milena Alonso, Guillermo Daniel Ocampo, Josefina |
author |
Balestrasse, Malena |
author_facet |
Balestrasse, Malena Massimino Stepñicka, Milena Alonso, Guillermo Daniel Ocampo, Josefina |
author_role |
author |
author2 |
Massimino Stepñicka, Milena Alonso, Guillermo Daniel Ocampo, Josefina |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Costas, Monica Alejandra Marino, Gabriela Inés Azurmendi, Pablo Javier |
dc.subject.none.fl_str_mv |
CHROMATIN TRYPANOSOMES DOT1 EPIGENETICS |
topic |
CHROMATIN TRYPANOSOMES DOT1 EPIGENETICS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Trypanosome cruzi, the ethiologic agent of Chagas Disease, affects a large number of the population in Latin America. It has a complex life cycle alternating between a mammalian host and the vector insect, Triatoma infestans. This cycle consists of three well-defined stages: amastigotes, epimastigotes and trypomastigotes. When the parasite faces different environments, it requires changes in gene expression in order to survive. Hence, gene expression regulation modulated by chromatin organization might be a key aspect to understand adaptation. Despite Trypanosomes gene expression is mainly regulated post transcriptionally, there are evidences that chromatin influence gene expression regulation. Recent studies have shown that homologues DOT1 methyltransferases, called DOT1a and DOT1b, are involved in the methylation of lysine 76 of histone H3 in T. cruzi. In T. brucei, DOT1a mediates H3K76 mono and di-methylation, whereas DOT1b also catalyzes H3K76 tri-methylation. However, these two enzymes remain poorly characterized.In this project, we intend to characterize the enzymatic activity and study the relevance of TcDOT1a and TcDOT1b during cell cycle and the metacytogenesis process. Therefore, to evaluate the catalytic activity using, we have successfully cloned and transformed a null DOT1 yeast strain with TcDOT1a. We are currently evaluating heterologous complementation. Simultaneously, we are working on TcDOT1b. Additionally, to analyze the isoforms subcelular location and their effects on cell cycle progression and differentiation, we have cloned the TcDOT1 isoforms in a pRibotex vector with an N-terminal HA-tag and transfected CL-Brener strain. Unfortunately, it resulted toxic for the cell. We are currently switching to use an inducible vector. Overall, our data will be useful to further understand the role of the DOT1 isoforms and the differential methylation of H3K76 in T. cruzi. In the long term, our findings might unravel new targets search for antiparasitic drugs. Fil: Balestrasse, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina Fil: Massimino Stepñicka, Milena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina Fil: Alonso, Guillermo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina Fil: Ocampo, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina Reunión Anual de Sociedades de Biociencias 2019; LXIV Reunión Anual de la Sociedad Argentina de Investigación Clínica; LI Reunión Anual de la Asociación Argentina de Farmacología Experimenta; XXI Reunión Anual de la Sociedad Argentina de Biología; XXXI Reunión Anual de la Sociedad Argentina de Protozoología; IX Reunión Anual de la Asociación Argentina de Nanomedicinas; VI Reunión Científica Regional de la Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio Mar del Plata Argentina Sociedad Argentina de Investigación Clínica Asociación Argentina de Farmacología Experimental Sociedad Argentina de Biología Sociedad Argentina de Protozoología Asociación Argentina de Nanomedicinas Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio |
description |
Trypanosome cruzi, the ethiologic agent of Chagas Disease, affects a large number of the population in Latin America. It has a complex life cycle alternating between a mammalian host and the vector insect, Triatoma infestans. This cycle consists of three well-defined stages: amastigotes, epimastigotes and trypomastigotes. When the parasite faces different environments, it requires changes in gene expression in order to survive. Hence, gene expression regulation modulated by chromatin organization might be a key aspect to understand adaptation. Despite Trypanosomes gene expression is mainly regulated post transcriptionally, there are evidences that chromatin influence gene expression regulation. Recent studies have shown that homologues DOT1 methyltransferases, called DOT1a and DOT1b, are involved in the methylation of lysine 76 of histone H3 in T. cruzi. In T. brucei, DOT1a mediates H3K76 mono and di-methylation, whereas DOT1b also catalyzes H3K76 tri-methylation. However, these two enzymes remain poorly characterized.In this project, we intend to characterize the enzymatic activity and study the relevance of TcDOT1a and TcDOT1b during cell cycle and the metacytogenesis process. Therefore, to evaluate the catalytic activity using, we have successfully cloned and transformed a null DOT1 yeast strain with TcDOT1a. We are currently evaluating heterologous complementation. Simultaneously, we are working on TcDOT1b. Additionally, to analyze the isoforms subcelular location and their effects on cell cycle progression and differentiation, we have cloned the TcDOT1 isoforms in a pRibotex vector with an N-terminal HA-tag and transfected CL-Brener strain. Unfortunately, it resulted toxic for the cell. We are currently switching to use an inducible vector. Overall, our data will be useful to further understand the role of the DOT1 isoforms and the differential methylation of H3K76 in T. cruzi. In the long term, our findings might unravel new targets search for antiparasitic drugs. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Reunión Journal http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
status_str |
publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/201691 Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle; Reunión Anual de Sociedades de Biociencias 2019; LXIV Reunión Anual de la Sociedad Argentina de Investigación Clínica; LI Reunión Anual de la Asociación Argentina de Farmacología Experimenta; XXI Reunión Anual de la Sociedad Argentina de Biología; XXXI Reunión Anual de la Sociedad Argentina de Protozoología; IX Reunión Anual de la Asociación Argentina de Nanomedicinas; VI Reunión Científica Regional de la Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio; Mar del Plata; Argentina; 2019; 124-125 0025-7680 1669-9106 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/201691 |
identifier_str_mv |
Characterization of the TcDot1A and TcDot1B isoforms: Implication of H3K76 differential methylation during Trypanosoma cruzi life cycle; Reunión Anual de Sociedades de Biociencias 2019; LXIV Reunión Anual de la Sociedad Argentina de Investigación Clínica; LI Reunión Anual de la Asociación Argentina de Farmacología Experimenta; XXI Reunión Anual de la Sociedad Argentina de Biología; XXXI Reunión Anual de la Sociedad Argentina de Protozoología; IX Reunión Anual de la Asociación Argentina de Nanomedicinas; VI Reunión Científica Regional de la Asociación Argentina de Ciencia y Tecnología de Animales de Laboratorio; Mar del Plata; Argentina; 2019; 124-125 0025-7680 1669-9106 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://medicinabuenosaires.com/revistas/vol79-19/s4/vol79_s4.pdf |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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Internacional |
dc.publisher.none.fl_str_mv |
Medicina (Buenos Aires) |
publisher.none.fl_str_mv |
Medicina (Buenos Aires) |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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