TRAP-silver staining, a highly sensitive assay for measuring telomerase activity in tumor tissue and cell lines
Braz. j. med. biol. res
;
35(1): 65-68, Jan. 2002. ilus
Artículo
en Inglés
| LILACS
| ID: lil-304202
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
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Neoplasias de la Tiroides
/
Telómero
/
Tinción con Nitrato de Plata
/
Telomerasa
Tipo de estudio:
Estudio diagnóstico
/
Guía de Práctica Clínica
Límite:
Humanos
Idioma:
Inglés
Revista:
Braz. j. med. biol. res
Asunto de la revista:
Biologia
/
Medicina
Año:
2002
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Instituto Ludwig de Pesquisa sobre o Câncer/BR
/
Universidade Federal de Säo Paulo/BR
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