Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/28433 |
Resumo: | The effect of zinc on neuronal systems is growing interest in scientific research due to a possible role as a modulator of synaptic activity. Additionally, recent research points to the therapeutic potential of zinc oxide nanoparticles (ZnO NPs) on neuronal cells. These nanoparticles are excellent drug carriers to the brain because, besides having positive characteristics for the protection of cellular homeostasis, they are small, allowing them to pass the blood brain barrier and interact directly within these cells. In this sense, the present thesis explored the effect of sub-toxic ZnO NP concentrations on cell viability and ROS production in SH-SY5Y cells, as well as their impact on the expression levels of PSD-95, SHANK 3 and β-actin proteins. The results showed increases in PSD-95 and SHANK 3 protein expression without variations in β-actin expression after neuronal cell exposure to sub-toxic concentrations and at reduced exposure times to ZnO NPs. Future efforts should be implemented to investigate how this increase may reduce brain impairment associated with neurodegenerative diseases. However, the results here presented have clearly identified some of the synaptic molecular targets of ZnO NPs and that these NPs are worthwhile exploring for their therapeutic potential. |
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Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levelsSynaptic transmissionOxide zinc nanoparticlesNeurodegenerative diseasesSH-SY5Y cellsSHANK 3PSD-95β-actinThe effect of zinc on neuronal systems is growing interest in scientific research due to a possible role as a modulator of synaptic activity. Additionally, recent research points to the therapeutic potential of zinc oxide nanoparticles (ZnO NPs) on neuronal cells. These nanoparticles are excellent drug carriers to the brain because, besides having positive characteristics for the protection of cellular homeostasis, they are small, allowing them to pass the blood brain barrier and interact directly within these cells. In this sense, the present thesis explored the effect of sub-toxic ZnO NP concentrations on cell viability and ROS production in SH-SY5Y cells, as well as their impact on the expression levels of PSD-95, SHANK 3 and β-actin proteins. The results showed increases in PSD-95 and SHANK 3 protein expression without variations in β-actin expression after neuronal cell exposure to sub-toxic concentrations and at reduced exposure times to ZnO NPs. Future efforts should be implemented to investigate how this increase may reduce brain impairment associated with neurodegenerative diseases. However, the results here presented have clearly identified some of the synaptic molecular targets of ZnO NPs and that these NPs are worthwhile exploring for their therapeutic potential.O efeito do zinco nos sistemas neuronais está a aumentar o seu interesse na pesquisa científica devido a um possível papel como modulador da atividade sináptica. Além disso, pesquisas recentes apontam para o potencial terapêutico de nanopartículas de óxido de zinco (ZnO NPs) em células neuronais. Essas nanopartículas são excelentes transportadoras de fármacos para o cérebro porque, além de terem características positivas para a proteção da homeostase celular, são pequenas, permitindo que elas ultrapassem a barreira hematoencefálica e interajam diretamente dentro dessas células. Nesse sentido, a presente tese explorou o efeito de concentrações sub-tóxicas de ZnO NPs na viabilidade celular e produção de ROS em células SH-SY5Y, bem como seu impacto nos níveis de expressão das proteínas PSD-95, SHANK 3 e β-actina. Os resultados mostraram aumentos na expressão das proteínas PSD-95 e SHANK 3, sem variações na expressão da β-actina após a exposição das células neuronais a concentrações sub-tóxicas e em tempos de exposição reduzidos aos ZnO NPs. Esforços futuros devem ser implementados para investigar como esse aumento pode reduzir o comprometimento cerebral associado a doenças neurodegenerativas. No entanto, os resultados aqui apresentados identificaram claramente alguns dos alvos moleculares sinápticos das ZnO NPs e que vale a pena explorar o seu potencial terapêutico.2019-122019-12-01T00:00:00Z2021-12-19T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/28433engCastro, Ana Carolina Fernandes Vieira deinfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:55:00Zoai:ria.ua.pt:10773/28433Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:00:58.947524Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
title |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
spellingShingle |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels Castro, Ana Carolina Fernandes Vieira de Synaptic transmission Oxide zinc nanoparticles Neurodegenerative diseases SH-SY5Y cells SHANK 3 PSD-95 β-actin |
title_short |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
title_full |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
title_fullStr |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
title_full_unstemmed |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
title_sort |
Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels |
author |
Castro, Ana Carolina Fernandes Vieira de |
author_facet |
Castro, Ana Carolina Fernandes Vieira de |
author_role |
author |
dc.contributor.author.fl_str_mv |
Castro, Ana Carolina Fernandes Vieira de |
dc.subject.por.fl_str_mv |
Synaptic transmission Oxide zinc nanoparticles Neurodegenerative diseases SH-SY5Y cells SHANK 3 PSD-95 β-actin |
topic |
Synaptic transmission Oxide zinc nanoparticles Neurodegenerative diseases SH-SY5Y cells SHANK 3 PSD-95 β-actin |
description |
The effect of zinc on neuronal systems is growing interest in scientific research due to a possible role as a modulator of synaptic activity. Additionally, recent research points to the therapeutic potential of zinc oxide nanoparticles (ZnO NPs) on neuronal cells. These nanoparticles are excellent drug carriers to the brain because, besides having positive characteristics for the protection of cellular homeostasis, they are small, allowing them to pass the blood brain barrier and interact directly within these cells. In this sense, the present thesis explored the effect of sub-toxic ZnO NP concentrations on cell viability and ROS production in SH-SY5Y cells, as well as their impact on the expression levels of PSD-95, SHANK 3 and β-actin proteins. The results showed increases in PSD-95 and SHANK 3 protein expression without variations in β-actin expression after neuronal cell exposure to sub-toxic concentrations and at reduced exposure times to ZnO NPs. Future efforts should be implemented to investigate how this increase may reduce brain impairment associated with neurodegenerative diseases. However, the results here presented have clearly identified some of the synaptic molecular targets of ZnO NPs and that these NPs are worthwhile exploring for their therapeutic potential. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12 2019-12-01T00:00:00Z 2021-12-19T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/28433 |
url |
http://hdl.handle.net/10773/28433 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137665385234432 |