Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells

Detalhes bibliográficos
Autor(a) principal: Schwindt, Telma Tiemi [UNIFESP]
Data de Publicação: 2009
Outros Autores: Motta, Fabiana Louise Teixeira [UNIFESP], Barnabé, Gabriela Filoso [UNIFESP], Cristina G., Massant [UNIFESP], Guimarães, Alessander de Oliveira [UNIFESP], Calcagnotto, Maria Elisa [UNIFESP], Pesquero, João Bosco [UNIFESP], Mello, Luiz Eugenio Araujo de Moraes [UNIFESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNIFESP
Texto Completo: http://dx.doi.org/10.1590/S0001-37652009000300009
http://repositorio.unifesp.br/handle/11600/5259
Resumo: Cell therapy for neurological disorders has advanced, and neural precursor cells (NPC) may become the ideal candidates for neural transplantation in a wide range of diseases. However, additional work has to be done to determine either the ideal culture environment for NPC expansion in vitro, without altering their plasticity, or the FGF-2 and EGF mechanisms of cell signaling in neurospheres growth, survival and differentiation. In this work we evaluated mouse neurospheres cultured with and without FGF-2 and EGF containing medium and showed that those growth factors are responsible for NPC proliferation. It is also demonstrated that endogenous production of growth factors shifts from FGF-2 to IGF-1/PDGFb upon EGF and FGF-2 withdrawal. Mouse NPC cultured in suspension showed different patterns of neuronal localization (core versus shell) for both EGF and FGF-2 withdrawal and control groups. Taken together, these results show that EGF and FGF-2 removal play an important role in NPC differentiation and may contribute to a better understanding of mechanisms of NPC differentiation. Our findings suggest that depriving NPC of growth factors prior to grafting might enhance their chance to effectively integrate into the host.
id UFSP_8bc4f2696ddab17bcb28ebc917175b1a
oai_identifier_str oai:repositorio.unifesp.br/:11600/5259
network_acronym_str UFSP
network_name_str Repositório Institucional da UNIFESP
repository_id_str 3465
spelling Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cellsneural precursor cellsneurospherefibroblast growth factor 2epidermal growth factordifferentiationcélulas precursoras neuraisneuroesferafator de crescimento de fibroblasto 2fator de crescimento epidérmicodiferenciaçãoCell therapy for neurological disorders has advanced, and neural precursor cells (NPC) may become the ideal candidates for neural transplantation in a wide range of diseases. However, additional work has to be done to determine either the ideal culture environment for NPC expansion in vitro, without altering their plasticity, or the FGF-2 and EGF mechanisms of cell signaling in neurospheres growth, survival and differentiation. In this work we evaluated mouse neurospheres cultured with and without FGF-2 and EGF containing medium and showed that those growth factors are responsible for NPC proliferation. It is also demonstrated that endogenous production of growth factors shifts from FGF-2 to IGF-1/PDGFb upon EGF and FGF-2 withdrawal. Mouse NPC cultured in suspension showed different patterns of neuronal localization (core versus shell) for both EGF and FGF-2 withdrawal and control groups. Taken together, these results show that EGF and FGF-2 removal play an important role in NPC differentiation and may contribute to a better understanding of mechanisms of NPC differentiation. Our findings suggest that depriving NPC of growth factors prior to grafting might enhance their chance to effectively integrate into the host.As terapias celulares para doenças neurológicas têm avançado e células precursoras neurais (NPC) surgem como candidatas ideais para o transplante de células neurais em muitas doenças. No entanto, trabalhos adicionais devem ser feitos para determinar o ambiente de cultivo ideal para a expansão in vitro das NPC, sem alterar sua plasticidade, e os mecanismos de sinalização celular do fator de crescimento epidérmico (EGF) e fator de crescimento de fibroblasto 2 (FGF-2) no crescimento, sobrevivência e diferenciação da neuroesfera. Nesse trabalho avaliamosNPCcultivadas na presença e na ausência de FGF-2 e EGF e mostramos que esses fatores de crescimento são responsáveis pela proliferação das NPC. Também foi demonstrado que a produção endógena de fatores de crescimento alterna de FGF-2 a fator de crescimento de insulina 1 (IGF-1) e fator de crescimento derivado de plaquetas b (PDGFb) após remoção de EGF e FGF-2. NPC de camundongo cultivadas em suspensão mostraram padrões de localização neuronal distintos (centro versus borda) tanto no grupo controle como no grupo sem EGF e FGF-2. Juntos, esses resultados mostram que a remoção de EGF e FGF-2 exerce importante ação na diferenciação de NPC e possivelmente contribui para melhor compreensão dos mecanismos envolvidos na diferenciação. Nossos achados sugerem que, privando as NPC de fatores de crescimento antes do transplante, talvez aumente as chances de que as células efetivamente se integrem ao hospedeiro.Universidade Federal de São Paulo (UNIFESP) Departamento de FisiologiaUniversidade Federal de São Paulo (UNIFESP) Departamento de BiofísicaUNIFESP, Depto. de FisiologiaUNIFESP, Depto. de BiofísicaSciELOFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Academia Brasileira de CiênciasUniversidade Federal de São Paulo (UNIFESP)Schwindt, Telma Tiemi [UNIFESP]Motta, Fabiana Louise Teixeira [UNIFESP]Barnabé, Gabriela Filoso [UNIFESP]Cristina G., Massant [UNIFESP]Guimarães, Alessander de Oliveira [UNIFESP]Calcagnotto, Maria Elisa [UNIFESP]Pesquero, João Bosco [UNIFESP]Mello, Luiz Eugenio Araujo de Moraes [UNIFESP]2015-06-14T13:41:10Z2015-06-14T13:41:10Z2009-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion443-452application/pdfhttp://dx.doi.org/10.1590/S0001-37652009000300009Anais da Academia Brasileira de Ciências. Academia Brasileira de Ciências, v. 81, n. 3, p. 443-452, 2009.10.1590/S0001-37652009000300009S0001-37652009000300009.pdf0001-3765S0001-37652009000300009http://repositorio.unifesp.br/handle/11600/5259WOS:000269462300009engAnais da Academia Brasileira de Ciênciasinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP2024-07-29T09:32:57Zoai:repositorio.unifesp.br/:11600/5259Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestbiblioteca.csp@unifesp.bropendoar:34652024-07-29T09:32:57Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false
dc.title.none.fl_str_mv Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
title Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
spellingShingle Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
Schwindt, Telma Tiemi [UNIFESP]
neural precursor cells
neurosphere
fibroblast growth factor 2
epidermal growth factor
differentiation
células precursoras neurais
neuroesfera
fator de crescimento de fibroblasto 2
fator de crescimento epidérmico
diferenciação
title_short Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
title_full Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
title_fullStr Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
title_full_unstemmed Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
title_sort Effects of FGF-2 and EGF removal on the differentiation of mouse neural precursor cells
author Schwindt, Telma Tiemi [UNIFESP]
author_facet Schwindt, Telma Tiemi [UNIFESP]
Motta, Fabiana Louise Teixeira [UNIFESP]
Barnabé, Gabriela Filoso [UNIFESP]
Cristina G., Massant [UNIFESP]
Guimarães, Alessander de Oliveira [UNIFESP]
Calcagnotto, Maria Elisa [UNIFESP]
Pesquero, João Bosco [UNIFESP]
Mello, Luiz Eugenio Araujo de Moraes [UNIFESP]
author_role author
author2 Motta, Fabiana Louise Teixeira [UNIFESP]
Barnabé, Gabriela Filoso [UNIFESP]
Cristina G., Massant [UNIFESP]
Guimarães, Alessander de Oliveira [UNIFESP]
Calcagnotto, Maria Elisa [UNIFESP]
Pesquero, João Bosco [UNIFESP]
Mello, Luiz Eugenio Araujo de Moraes [UNIFESP]
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Paulo (UNIFESP)
dc.contributor.author.fl_str_mv Schwindt, Telma Tiemi [UNIFESP]
Motta, Fabiana Louise Teixeira [UNIFESP]
Barnabé, Gabriela Filoso [UNIFESP]
Cristina G., Massant [UNIFESP]
Guimarães, Alessander de Oliveira [UNIFESP]
Calcagnotto, Maria Elisa [UNIFESP]
Pesquero, João Bosco [UNIFESP]
Mello, Luiz Eugenio Araujo de Moraes [UNIFESP]
dc.subject.por.fl_str_mv neural precursor cells
neurosphere
fibroblast growth factor 2
epidermal growth factor
differentiation
células precursoras neurais
neuroesfera
fator de crescimento de fibroblasto 2
fator de crescimento epidérmico
diferenciação
topic neural precursor cells
neurosphere
fibroblast growth factor 2
epidermal growth factor
differentiation
células precursoras neurais
neuroesfera
fator de crescimento de fibroblasto 2
fator de crescimento epidérmico
diferenciação
description Cell therapy for neurological disorders has advanced, and neural precursor cells (NPC) may become the ideal candidates for neural transplantation in a wide range of diseases. However, additional work has to be done to determine either the ideal culture environment for NPC expansion in vitro, without altering their plasticity, or the FGF-2 and EGF mechanisms of cell signaling in neurospheres growth, survival and differentiation. In this work we evaluated mouse neurospheres cultured with and without FGF-2 and EGF containing medium and showed that those growth factors are responsible for NPC proliferation. It is also demonstrated that endogenous production of growth factors shifts from FGF-2 to IGF-1/PDGFb upon EGF and FGF-2 withdrawal. Mouse NPC cultured in suspension showed different patterns of neuronal localization (core versus shell) for both EGF and FGF-2 withdrawal and control groups. Taken together, these results show that EGF and FGF-2 removal play an important role in NPC differentiation and may contribute to a better understanding of mechanisms of NPC differentiation. Our findings suggest that depriving NPC of growth factors prior to grafting might enhance their chance to effectively integrate into the host.
publishDate 2009
dc.date.none.fl_str_mv 2009-09-01
2015-06-14T13:41:10Z
2015-06-14T13:41:10Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S0001-37652009000300009
Anais da Academia Brasileira de Ciências. Academia Brasileira de Ciências, v. 81, n. 3, p. 443-452, 2009.
10.1590/S0001-37652009000300009
S0001-37652009000300009.pdf
0001-3765
S0001-37652009000300009
http://repositorio.unifesp.br/handle/11600/5259
WOS:000269462300009
url http://dx.doi.org/10.1590/S0001-37652009000300009
http://repositorio.unifesp.br/handle/11600/5259
identifier_str_mv Anais da Academia Brasileira de Ciências. Academia Brasileira de Ciências, v. 81, n. 3, p. 443-452, 2009.
10.1590/S0001-37652009000300009
S0001-37652009000300009.pdf
0001-3765
S0001-37652009000300009
WOS:000269462300009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Anais da Academia Brasileira de Ciências
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 443-452
application/pdf
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv reponame:Repositório Institucional da UNIFESP
instname:Universidade Federal de São Paulo (UNIFESP)
instacron:UNIFESP
instname_str Universidade Federal de São Paulo (UNIFESP)
instacron_str UNIFESP
institution UNIFESP
reponame_str Repositório Institucional da UNIFESP
collection Repositório Institucional da UNIFESP
repository.name.fl_str_mv Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)
repository.mail.fl_str_mv biblioteca.csp@unifesp.br
_version_ 1814268368532799488