Utilidad pronóstica de la detección de células tumorales circulantes (CTCs) en pacientes con tumores sólidos de origen epitelial
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2012
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Jaén : Universidad de Jaén
Resumen
El cáncer, principalmente el cáncer de pulmón, mama y colorrectal, es una de las principales causas de muerte a nivel mundial. Como la mayoría de estas muertes son causadas por las metástasis, un diagnóstico precoz es esencial. Asimismo, es prioritario el estudio de las células tumorales circulantes (CTCs), ya que su potencial metastásico las convierte en una de las fuentes de las futuras metástasis. Los objetivos de esta tesis son: primero, desarrollar una metodología que nos permita aislar y caracterizar estas CTCs; segundo, comprobar el valor pronóstico de la detección de CTCs en sangre periférica de pacientes con cáncer de mama y colon; y por último, la caracterización genética y fenotípica de estas CTCs. Los resultados sugieren que (i) la detección de CTCs en sangre periférica tiene valor pronóstico, dependiendo del tipo de tumor y del tipo de paciente de estudio (metastásico o no metastásico); y (ii) el análisis genético y fenotípico de las CTCs ofrece información adicional sobre la progresión tumoral.
Cancer, specially lung, breast and colorectal cancers, is a main cause of worldwide death. Due to metastases are responsible of the the most deaths caused by cancer, an early spread of disease´s diagnosis is essential. Circulating tumor cells (CTCs) have metastatic potential and are responsible for the spread of cancer from primary tumors to other organs. Thereby, the detection and characterization of CTCs should be a priority in cancer study and treatment. The mains goals of this thesis are: first of all, to develop a methodology that allow us to isolate and characterize these CTCs; second, to test the prognostic value of CTCs´ detection in peripheral blood of breast and colon cancer patients; and, finally, the genetic and phenotypic characterization of these CTCs. The results suggest that (i) CTCs´ detection is a prognostic tumoral marker, always depending on the type of cancer and on the type of patients (metastatic or non-metastatic patients); and (ii) CTCs´ genetic and phenotypic analyses give additional information about the tumor progression.
Cancer, specially lung, breast and colorectal cancers, is a main cause of worldwide death. Due to metastases are responsible of the the most deaths caused by cancer, an early spread of disease´s diagnosis is essential. Circulating tumor cells (CTCs) have metastatic potential and are responsible for the spread of cancer from primary tumors to other organs. Thereby, the detection and characterization of CTCs should be a priority in cancer study and treatment. The mains goals of this thesis are: first of all, to develop a methodology that allow us to isolate and characterize these CTCs; second, to test the prognostic value of CTCs´ detection in peripheral blood of breast and colon cancer patients; and, finally, the genetic and phenotypic characterization of these CTCs. The results suggest that (i) CTCs´ detection is a prognostic tumoral marker, always depending on the type of cancer and on the type of patients (metastatic or non-metastatic patients); and (ii) CTCs´ genetic and phenotypic analyses give additional information about the tumor progression.
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Células tumurales circulantes, Citoqueratina, Pronósticos (Patología), Circulating tumor cells, Cytokeratin, Prognosis, Tumores, Células