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The detection of circulating breast cancer cells in peripheral blood by reverse transcriptase-polymerase chain reaction
Journal of Korean Medical Science ; : 194-198, 2000.
Artículo en Inglés | WPRIM | ID: wpr-18571
ABSTRACT
Some circulating cancer cells in the blood play a central role in the metastatic process and may have a major influence on patient progress. Their numbers can be very small and techniques for their detection need to be both sensitive and specific. Polymerase chain reaction (PCR) has been successfully used to detect small numbers of tumor cells in cancer. We used a reverse transcriptase-polymerase chain reaction (RT-PCR) to detect circulating breast cancer cells in venous blood samples before operations and assessed cytokeratin-19 (CK-19) and cytokeratin-20 (CK-20) as target mRNA markers in the blood of healthy donors (n=6) and breast cancer patients (n=30) with American Joint Committee on Cancer stages 0 to IIIa. CK-19 mRNA was expressed in all blood samples of healthy donors and patients. But CK-20 was the only mRNA marker not detected in the blood from healthy donors. Seven of 30 (23%) venous blood isolates of breast cancer patients yielded a CK-20 mRNA with positive results. There was no correlating CK-20 mRNA expression with stage and axillary lymph node status. In conclusion, CK-19 showed no diagnostic value as a mRNA marker in the detection of circulating cancer cells by RT-PCR assay because this was expressed in the blood of healthy donors. CK-20 mRNA was an useful marker to detect circulating cancer cells in breast cancers.
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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Neoplasias de la Mama / ARN Mensajero / ARN Neoplásico / Marcadores Genéticos / Regulación Neoplásica de la Expresión Génica / Microglobulina beta-2 / Sensibilidad y Especificidad / Cartilla de ADN / Reacción en Cadena de la Polimerasa de Transcriptasa Inversa / Proteínas de Filamentos Intermediarios Tipo de estudio: Estudio diagnóstico Límite: Femenino / Humanos Idioma: Inglés Revista: Journal of Korean Medical Science Año: 2000 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Neoplasias de la Mama / ARN Mensajero / ARN Neoplásico / Marcadores Genéticos / Regulación Neoplásica de la Expresión Génica / Microglobulina beta-2 / Sensibilidad y Especificidad / Cartilla de ADN / Reacción en Cadena de la Polimerasa de Transcriptasa Inversa / Proteínas de Filamentos Intermediarios Tipo de estudio: Estudio diagnóstico Límite: Femenino / Humanos Idioma: Inglés Revista: Journal of Korean Medical Science Año: 2000 Tipo del documento: Artículo