Nanopartículas poliméricas e interações com macrófagos
Ano de defesa: | 2016 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Goiás
|
Programa de Pós-Graduação: |
Programa de Pós-graduação em Biologia da Relação Parasito-Hospedeiro (IPTSP)
|
Departamento: |
Instituto de Patologia Tropical e Saúde Pública - IPTSP (RG)
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.bc.ufg.br/tede/handle/tede/8963 |
Resumo: | Nanotechnology involves the creation and use of materials, devices and systems through control of matter on the manometer scale. It has positive impact on medicine involving the treatment and diagnosis. Drug delivery systems prepared with nanostructures have the ability to overcome biological barriers and optimizing drug release. However, one of the main challenges in the use of these systems is their internalization by macrophages. This study aims to prepare and characterize polymer nanoparticles formed by biodegradable polymers and investigate its impact on the function of macrophages in vitro by the observation of cell viability, phagocytic activity and cytokine production. Also, was investigate the cytokine profile in serum and splenocytes culture supernatant from Balb/C mice injected with chitosan nanoparticles. The chitosan and chitosan-containing magnetic nanoparticles were prepared by ionic gelation crosslinking, resulting in a morphology "nearly spherical" and positive zeta potential. The PLGA prepared by emulsification and solvent evaporation method presented spherical morphology and negative zeta potential. All preparations had a diameter smaller than 300 nanometers and polydispersity index lower than 0.5. Nanoparticles of chitosan and PLGA affected the viability of macrophages in vitro only at the highest concentration tested (4 mg/mL). The chitosan nanoparticles containing magnetic nanoparticles were internalized by macrophages after 4h and 24h of incubation. Different nanoparticles triggered high production of TNF- and low IL12p40 production and IL-10. Serum and splenocytes culture supernatant was observed in both the production of IFN- as IL-4. However, IL-4 production was higher than that of IFN-. |
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Amaral, André Corrêahttp://lattes.cnpq.br/8801299423520104Amaral, André CorrêaLoyola, Patrícia Resende Alo NagibCeles, Mara Rúbia Nuneshttp://lattes.cnpq.br/1698440590060965Bandeira, Anielle Carvalho2018-10-09T12:50:00Z2016-09-16BANDEIRA, A. C. Nanopartículas poliméricas e interações com macrófagos. 2016. 69 f. Dissertação (Mestrado em Biologia da Relação Parasito-Hospedeiro) - Universidade Federal de Goiás, Goiânia, 2016.http://repositorio.bc.ufg.br/tede/handle/tede/8963Nanotechnology involves the creation and use of materials, devices and systems through control of matter on the manometer scale. It has positive impact on medicine involving the treatment and diagnosis. Drug delivery systems prepared with nanostructures have the ability to overcome biological barriers and optimizing drug release. However, one of the main challenges in the use of these systems is their internalization by macrophages. This study aims to prepare and characterize polymer nanoparticles formed by biodegradable polymers and investigate its impact on the function of macrophages in vitro by the observation of cell viability, phagocytic activity and cytokine production. Also, was investigate the cytokine profile in serum and splenocytes culture supernatant from Balb/C mice injected with chitosan nanoparticles. The chitosan and chitosan-containing magnetic nanoparticles were prepared by ionic gelation crosslinking, resulting in a morphology "nearly spherical" and positive zeta potential. The PLGA prepared by emulsification and solvent evaporation method presented spherical morphology and negative zeta potential. All preparations had a diameter smaller than 300 nanometers and polydispersity index lower than 0.5. Nanoparticles of chitosan and PLGA affected the viability of macrophages in vitro only at the highest concentration tested (4 mg/mL). The chitosan nanoparticles containing magnetic nanoparticles were internalized by macrophages after 4h and 24h of incubation. Different nanoparticles triggered high production of TNF- and low IL12p40 production and IL-10. Serum and splenocytes culture supernatant was observed in both the production of IFN- as IL-4. However, IL-4 production was higher than that of IFN-.A nanotecnologia envolve a criação e utilização de materiais, dispositivos e sistemas através do controle da matéria na escala manométrica. Apresenta impactos positivos na medicina que envolve desde o diagnóstico ao tratamento de doenças. Sistemas de entrega de fármacos apresentam a capacidade de superar barreiras biológicas e otimizar a liberação de um fármaco. No entanto, um dos principais desafios na utilização desses sistemas é a sua internalização pelos macrófagos. Esse estudo objetiva preparar e caracterizar nanopartículas poliméricas formadas por polímeros biodegradáveis e investigar o seu impacto na função dosmacrófagos in vitro através da observação da viabilidade celular, atividade fagocítica e produção de citocinas. Além do perfil de citocinas no soro e sobrenadante de cultura de esplenócitos provenientes de camundongos Balb/C que foram injetados com uma suspensão de nanopartículas de quitosana. As nanopartículas de quitosana e quitosana contendo magnéticas foram preparadas por gelificação iônica apresentando morfologia reticular e “quase esférica”, respectivamente, e potencial zeta positivo. As de PLGA preparadas por emulsificação e evaporação do solvente apresentaram morfologia esférica e potencial zeta negativo. Todas apresentaram diâmetro menor que 300 nanômetros e índice de polidispersão menor que 0,5. As nanopartículas de quitosana e de PLGA afetaram a viabilidade de macrófagos in vitro apenas na maior concentração testada (4mg/mL). As nanopartículas de quitosana contendo magnética foram internalizadas pelos macrófagos em 4h e 24h de incubação. As diferentes nanopartículas desencadearam a produção elevada de TNF- e baixa produção de IL12p40 e IL-10. No soro e no sobrenadante da cultura de esplenócitos foi observada tanto a produção de INF- quanto de IL-4. No entanto, a produção de IL-4 foi maior que a de IFN-.Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2018-10-09T11:38:28Z No. of bitstreams: 2 Dissertação - Anielle Carvalho Bandeira - 2016.pdf: 3728087 bytes, checksum: 11425e90569d00c562e5046dfd39fd10 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-10-09T12:50:00Z (GMT) No. of bitstreams: 2 Dissertação - Anielle Carvalho Bandeira - 2016.pdf: 3728087 bytes, checksum: 11425e90569d00c562e5046dfd39fd10 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2018-10-09T12:50:00Z (GMT). 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dc.title.eng.fl_str_mv |
Nanopartículas poliméricas e interações com macrófagos |
dc.title.alternative.eng.fl_str_mv |
Polymer nanoparticles and interactions with macrophages |
title |
Nanopartículas poliméricas e interações com macrófagos |
spellingShingle |
Nanopartículas poliméricas e interações com macrófagos Bandeira, Anielle Carvalho Nanopartículas Quitosana PLGA Nanopartículas magnéticas Macrófagos MET Fagocitose Nanoparticles Chitosan PLGA Magnetic nanoparticles Macrophages Phagocitose TEM CIENCIAS BIOLOGICAS::PARASITOLOGIA |
title_short |
Nanopartículas poliméricas e interações com macrófagos |
title_full |
Nanopartículas poliméricas e interações com macrófagos |
title_fullStr |
Nanopartículas poliméricas e interações com macrófagos |
title_full_unstemmed |
Nanopartículas poliméricas e interações com macrófagos |
title_sort |
Nanopartículas poliméricas e interações com macrófagos |
author |
Bandeira, Anielle Carvalho |
author_facet |
Bandeira, Anielle Carvalho |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Amaral, André Corrêa |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8801299423520104 |
dc.contributor.referee1.fl_str_mv |
Amaral, André Corrêa |
dc.contributor.referee2.fl_str_mv |
Loyola, Patrícia Resende Alo Nagib |
dc.contributor.referee3.fl_str_mv |
Celes, Mara Rúbia Nunes |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1698440590060965 |
dc.contributor.author.fl_str_mv |
Bandeira, Anielle Carvalho |
contributor_str_mv |
Amaral, André Corrêa Amaral, André Corrêa Loyola, Patrícia Resende Alo Nagib Celes, Mara Rúbia Nunes |
dc.subject.por.fl_str_mv |
Nanopartículas Quitosana PLGA Nanopartículas magnéticas Macrófagos MET Fagocitose |
topic |
Nanopartículas Quitosana PLGA Nanopartículas magnéticas Macrófagos MET Fagocitose Nanoparticles Chitosan PLGA Magnetic nanoparticles Macrophages Phagocitose TEM CIENCIAS BIOLOGICAS::PARASITOLOGIA |
dc.subject.eng.fl_str_mv |
Nanoparticles Chitosan PLGA Magnetic nanoparticles Macrophages Phagocitose TEM |
dc.subject.cnpq.fl_str_mv |
CIENCIAS BIOLOGICAS::PARASITOLOGIA |
description |
Nanotechnology involves the creation and use of materials, devices and systems through control of matter on the manometer scale. It has positive impact on medicine involving the treatment and diagnosis. Drug delivery systems prepared with nanostructures have the ability to overcome biological barriers and optimizing drug release. However, one of the main challenges in the use of these systems is their internalization by macrophages. This study aims to prepare and characterize polymer nanoparticles formed by biodegradable polymers and investigate its impact on the function of macrophages in vitro by the observation of cell viability, phagocytic activity and cytokine production. Also, was investigate the cytokine profile in serum and splenocytes culture supernatant from Balb/C mice injected with chitosan nanoparticles. The chitosan and chitosan-containing magnetic nanoparticles were prepared by ionic gelation crosslinking, resulting in a morphology "nearly spherical" and positive zeta potential. The PLGA prepared by emulsification and solvent evaporation method presented spherical morphology and negative zeta potential. All preparations had a diameter smaller than 300 nanometers and polydispersity index lower than 0.5. Nanoparticles of chitosan and PLGA affected the viability of macrophages in vitro only at the highest concentration tested (4 mg/mL). The chitosan nanoparticles containing magnetic nanoparticles were internalized by macrophages after 4h and 24h of incubation. Different nanoparticles triggered high production of TNF- and low IL12p40 production and IL-10. Serum and splenocytes culture supernatant was observed in both the production of IFN- as IL-4. However, IL-4 production was higher than that of IFN-. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-09-16 |
dc.date.accessioned.fl_str_mv |
2018-10-09T12:50:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
BANDEIRA, A. C. Nanopartículas poliméricas e interações com macrófagos. 2016. 69 f. Dissertação (Mestrado em Biologia da Relação Parasito-Hospedeiro) - Universidade Federal de Goiás, Goiânia, 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/8963 |
identifier_str_mv |
BANDEIRA, A. C. Nanopartículas poliméricas e interações com macrófagos. 2016. 69 f. Dissertação (Mestrado em Biologia da Relação Parasito-Hospedeiro) - Universidade Federal de Goiás, Goiânia, 2016. |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/8963 |
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por |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Universidade Federal de Goiás |
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UFG |
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Brasil |
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Instituto de Patologia Tropical e Saúde Pública - IPTSP (RG) |
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Universidade Federal de Goiás |
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