TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines

Detalhes bibliográficos
Autor(a) principal: Dalla Torre, Cristiane Arruda [UNIFESP]
Data de Publicação: 2002
Outros Autores: Maciel, Rui Monteiro de Barros [UNIFESP], Pinheiro, Nídia Alice [UNIFESP], Andrade, Joyce Anderson Duffles [UNIFESP], Toledo, Silvia Regina Caminada de [UNIFESP], Villa, Luisa Lina, Cerutti, Janete Maria [UNIFESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNIFESP
Texto Completo: http://dx.doi.org/10.1590/S0100-879X2002000100009
http://repositorio.unifesp.br/handle/11600/1315
Resumo: Measurement of telomerase activity in clinically obtained tumor samples may provide important information for use as both a diagnostic marker and a prognostic indicator for patient outcome. In order to evaluate telomerase activity in tumor tissue without radiolabeling the product, we developed a simple telomeric repeat amplification protocol-silver-staining assay that is less time-consuming, is safe and requires minimal equipment. In addition, we determined the sensitivity of the silver-staining method by using extracts of telomerase-positive thyroid carcinoma cell lines which were serially diluted from 5,000 to 10 cells. Telomerase activity was also assayed in 19 thyroid tumors, 2 normal controls and 27 bone marrow aspirates. The results indicate that the technique permits the detection of telomerase activity from 5000 to as few as 10 cells. We propose that it could be immediately applicable in many laboratories due to the minimal amount of equipment required.
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spelling TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell linesTelomeric repeat amplification protocolTRAP assayHuman thyroid cancerLeukemiaTelomeraseSilver stainingMeasurement of telomerase activity in clinically obtained tumor samples may provide important information for use as both a diagnostic marker and a prognostic indicator for patient outcome. In order to evaluate telomerase activity in tumor tissue without radiolabeling the product, we developed a simple telomeric repeat amplification protocol-silver-staining assay that is less time-consuming, is safe and requires minimal equipment. In addition, we determined the sensitivity of the silver-staining method by using extracts of telomerase-positive thyroid carcinoma cell lines which were serially diluted from 5,000 to 10 cells. Telomerase activity was also assayed in 19 thyroid tumors, 2 normal controls and 27 bone marrow aspirates. The results indicate that the technique permits the detection of telomerase activity from 5000 to as few as 10 cells. We propose that it could be immediately applicable in many laboratories due to the minimal amount of equipment required.Universidade Federal de São Paulo (UNIFESP) Escola Paulista de Medicina Departamento de MedicinaUniversidade Federal de São Paulo (UNIFESP) Escola Paulista de Medicina Departamento de MorfologiaInstituto Ludwig de Pesquisa sobre o CâncerUNIFESP, EPM, Depto. de MedicinaUNIFESP, EPM, Depto. de MorfologiaSciELOAssociação Brasileira de Divulgação CientíficaUniversidade Federal de São Paulo (UNIFESP)Instituto Ludwig de Pesquisa sobre o CâncerDalla Torre, Cristiane Arruda [UNIFESP]Maciel, Rui Monteiro de Barros [UNIFESP]Pinheiro, Nídia Alice [UNIFESP]Andrade, Joyce Anderson Duffles [UNIFESP]Toledo, Silvia Regina Caminada de [UNIFESP]Villa, Luisa LinaCerutti, Janete Maria [UNIFESP]2015-06-14T13:29:34Z2015-06-14T13:29:34Z2002-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion65-68application/pdfhttp://dx.doi.org/10.1590/S0100-879X2002000100009Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 35, n. 1, p. 65-68, 2002.10.1590/S0100-879X2002000100009S0100-879X2002000100009.pdf0100-879XS0100-879X2002000100009http://repositorio.unifesp.br/handle/11600/1315WOS:000173942600009engBrazilian Journal of Medical and Biological Researchinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP2024-07-29T17:42:03Zoai:repositorio.unifesp.br/:11600/1315Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestbiblioteca.csp@unifesp.bropendoar:34652024-07-29T17:42:03Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false
dc.title.none.fl_str_mv TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
title TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
spellingShingle TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
Dalla Torre, Cristiane Arruda [UNIFESP]
Telomeric repeat amplification protocol
TRAP assay
Human thyroid cancer
Leukemia
Telomerase
Silver staining
title_short TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
title_full TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
title_fullStr TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
title_full_unstemmed TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
title_sort TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
author Dalla Torre, Cristiane Arruda [UNIFESP]
author_facet Dalla Torre, Cristiane Arruda [UNIFESP]
Maciel, Rui Monteiro de Barros [UNIFESP]
Pinheiro, Nídia Alice [UNIFESP]
Andrade, Joyce Anderson Duffles [UNIFESP]
Toledo, Silvia Regina Caminada de [UNIFESP]
Villa, Luisa Lina
Cerutti, Janete Maria [UNIFESP]
author_role author
author2 Maciel, Rui Monteiro de Barros [UNIFESP]
Pinheiro, Nídia Alice [UNIFESP]
Andrade, Joyce Anderson Duffles [UNIFESP]
Toledo, Silvia Regina Caminada de [UNIFESP]
Villa, Luisa Lina
Cerutti, Janete Maria [UNIFESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Paulo (UNIFESP)
Instituto Ludwig de Pesquisa sobre o Câncer
dc.contributor.author.fl_str_mv Dalla Torre, Cristiane Arruda [UNIFESP]
Maciel, Rui Monteiro de Barros [UNIFESP]
Pinheiro, Nídia Alice [UNIFESP]
Andrade, Joyce Anderson Duffles [UNIFESP]
Toledo, Silvia Regina Caminada de [UNIFESP]
Villa, Luisa Lina
Cerutti, Janete Maria [UNIFESP]
dc.subject.por.fl_str_mv Telomeric repeat amplification protocol
TRAP assay
Human thyroid cancer
Leukemia
Telomerase
Silver staining
topic Telomeric repeat amplification protocol
TRAP assay
Human thyroid cancer
Leukemia
Telomerase
Silver staining
description Measurement of telomerase activity in clinically obtained tumor samples may provide important information for use as both a diagnostic marker and a prognostic indicator for patient outcome. In order to evaluate telomerase activity in tumor tissue without radiolabeling the product, we developed a simple telomeric repeat amplification protocol-silver-staining assay that is less time-consuming, is safe and requires minimal equipment. In addition, we determined the sensitivity of the silver-staining method by using extracts of telomerase-positive thyroid carcinoma cell lines which were serially diluted from 5,000 to 10 cells. Telomerase activity was also assayed in 19 thyroid tumors, 2 normal controls and 27 bone marrow aspirates. The results indicate that the technique permits the detection of telomerase activity from 5000 to as few as 10 cells. We propose that it could be immediately applicable in many laboratories due to the minimal amount of equipment required.
publishDate 2002
dc.date.none.fl_str_mv 2002-01-01
2015-06-14T13:29:34Z
2015-06-14T13:29:34Z
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/S0100-879X2002000100009
Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 35, n. 1, p. 65-68, 2002.
10.1590/S0100-879X2002000100009
S0100-879X2002000100009.pdf
0100-879X
S0100-879X2002000100009
http://repositorio.unifesp.br/handle/11600/1315
WOS:000173942600009
url http://dx.doi.org/10.1590/S0100-879X2002000100009
http://repositorio.unifesp.br/handle/11600/1315
identifier_str_mv Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 35, n. 1, p. 65-68, 2002.
10.1590/S0100-879X2002000100009
S0100-879X2002000100009.pdf
0100-879X
S0100-879X2002000100009
WOS:000173942600009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Journal of Medical and Biological Research
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 65-68
application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Divulgação Científica
publisher.none.fl_str_mv Associação Brasileira de Divulgação Científica
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
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