Identification of genes differentially expressed in breast cancer
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/1095 |
Resumo: | Breast cancer comprises heterogeneous tumors with different clinical characteristics, disease courses, and responses to specific treatments. Moreover, breast carcinomas result mainly from the accumulation of genetic and epigenetic alterations in epithelial cells of mammary gland. The identification of novel genes differentially expressed in breast cancer has important implications in understanding the molecular mechanisms underlying breast tumorigenesis, and developing new diagnostic and therapeutic targets. Therefore, the aim of this work was to identify genes differentially expressed in the breast cancer MCF7 cells, and to confirm its differential regulation in breast cancer. In this study, we used the suppressive subtractive hybridization technique to generate two subtractive libraries with 96 clones each, which were subsequently digested with EcoRI and then, all the plasmids with insert were sequenced. These results were further analyzed by Blast tool and GeneBank. We identify 36 genes as overexpressed and 19 genes as underexpressed in MCF7 cells. Some of these genes were previously identified as over- or underexpressed in breast cancer; however we found several genes that haven’t yet been described as up or down-regulated in MCF7 cell line. In the future, these novel genes may be used as possible biomarkers, diagnostic markers or therapeutic targets in breast cancer. |
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Identification of genes differentially expressed in breast cancerIdentificação de genes diferencialmente expressos no cancro da mamaCancro da mamaCancro da mama - Genes diferencialmente expressosCancro da mama - Hibridação subtrativaBreast cancer comprises heterogeneous tumors with different clinical characteristics, disease courses, and responses to specific treatments. Moreover, breast carcinomas result mainly from the accumulation of genetic and epigenetic alterations in epithelial cells of mammary gland. The identification of novel genes differentially expressed in breast cancer has important implications in understanding the molecular mechanisms underlying breast tumorigenesis, and developing new diagnostic and therapeutic targets. Therefore, the aim of this work was to identify genes differentially expressed in the breast cancer MCF7 cells, and to confirm its differential regulation in breast cancer. In this study, we used the suppressive subtractive hybridization technique to generate two subtractive libraries with 96 clones each, which were subsequently digested with EcoRI and then, all the plasmids with insert were sequenced. These results were further analyzed by Blast tool and GeneBank. We identify 36 genes as overexpressed and 19 genes as underexpressed in MCF7 cells. Some of these genes were previously identified as over- or underexpressed in breast cancer; however we found several genes that haven’t yet been described as up or down-regulated in MCF7 cell line. In the future, these novel genes may be used as possible biomarkers, diagnostic markers or therapeutic targets in breast cancer.O cancro da mama abrange tumores bastante heterogéneos que têm não só diferentes características clínicas como também diferentes progressões e respostas a tratamentos específicos. Para além disso, o cancro da mama resulta principalmente de alterações genéticas e epigenéticas de células da glândula mamária. A identificação de novos genes diferencialmente expressos no cancro da mama permite a compreensão da biologia da tumorigénese da mama e a identificação de novos biomarcadores ou alvos terapêuticos. O objetivo deste trabalho foi identificar genes diferencialmente expressos no cancro da mama. Neste estudo, foi utilizada a técnica da hibridação subtrativa para gerar dois bancos subtrativos, cada um com 96 clones, os quais foram, posteriormente, digeridos pela enzima EcoRI, e foram sequenciados todos os plasmídeos que continham insert. Todos os resultados foram analisados usando o programa Blast e a base de dados GeneBank, identificando-se 37 genes como sendo sobre-expressos e 17 como sub-expressos na linha celular MCF7. Embora alguns destes genes já tenham sido identificados como diferencialmente expressos no cancro da mama, foram encontrados alguns novos genes como diferencialmente expressos nas células MCF7. Estes novos genes podem vir a ser usados como biomarcadores do cancro da mama, ou então, utilizados como possíveis alvos terapêuticos no cancro da mama.Universidade da Beira InteriorBatista, Cláudio Jorge MaiaSocorro, Sílvia Cristina da Cruz MarquesuBibliorumReis, Vânia Isabel Gonçalves Pereira dos2013-03-25T10:10:36Z2012-062012-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.6/1095enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:36:34Zoai:ubibliorum.ubi.pt:10400.6/1095Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:43:01.408460Repositório 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 |
Identification of genes differentially expressed in breast cancer Identificação de genes diferencialmente expressos no cancro da mama |
title |
Identification of genes differentially expressed in breast cancer |
spellingShingle |
Identification of genes differentially expressed in breast cancer Reis, Vânia Isabel Gonçalves Pereira dos Cancro da mama Cancro da mama - Genes diferencialmente expressos Cancro da mama - Hibridação subtrativa |
title_short |
Identification of genes differentially expressed in breast cancer |
title_full |
Identification of genes differentially expressed in breast cancer |
title_fullStr |
Identification of genes differentially expressed in breast cancer |
title_full_unstemmed |
Identification of genes differentially expressed in breast cancer |
title_sort |
Identification of genes differentially expressed in breast cancer |
author |
Reis, Vânia Isabel Gonçalves Pereira dos |
author_facet |
Reis, Vânia Isabel Gonçalves Pereira dos |
author_role |
author |
dc.contributor.none.fl_str_mv |
Batista, Cláudio Jorge Maia Socorro, Sílvia Cristina da Cruz Marques uBibliorum |
dc.contributor.author.fl_str_mv |
Reis, Vânia Isabel Gonçalves Pereira dos |
dc.subject.por.fl_str_mv |
Cancro da mama Cancro da mama - Genes diferencialmente expressos Cancro da mama - Hibridação subtrativa |
topic |
Cancro da mama Cancro da mama - Genes diferencialmente expressos Cancro da mama - Hibridação subtrativa |
description |
Breast cancer comprises heterogeneous tumors with different clinical characteristics, disease courses, and responses to specific treatments. Moreover, breast carcinomas result mainly from the accumulation of genetic and epigenetic alterations in epithelial cells of mammary gland. The identification of novel genes differentially expressed in breast cancer has important implications in understanding the molecular mechanisms underlying breast tumorigenesis, and developing new diagnostic and therapeutic targets. Therefore, the aim of this work was to identify genes differentially expressed in the breast cancer MCF7 cells, and to confirm its differential regulation in breast cancer. In this study, we used the suppressive subtractive hybridization technique to generate two subtractive libraries with 96 clones each, which were subsequently digested with EcoRI and then, all the plasmids with insert were sequenced. These results were further analyzed by Blast tool and GeneBank. We identify 36 genes as overexpressed and 19 genes as underexpressed in MCF7 cells. Some of these genes were previously identified as over- or underexpressed in breast cancer; however we found several genes that haven’t yet been described as up or down-regulated in MCF7 cell line. In the future, these novel genes may be used as possible biomarkers, diagnostic markers or therapeutic targets in breast cancer. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-06 2012-06-01T00:00:00Z 2013-03-25T10:10:36Z |
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/10400.6/1095 |
url |
http://hdl.handle.net/10400.6/1095 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade da Beira Interior |
publisher.none.fl_str_mv |
Universidade da Beira Interior |
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 |
instname_str |
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 |
repository.mail.fl_str_mv |
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1799136330458857472 |