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Isolation and Characterization of Neutrophils with Anti-Tumor Properties
Published on: June 19, 2015
Los fagocitos como carcinógenos: transformación maligna producida por los neutrófilos humanos
Resumen
La inflamación crónica, inducida por intermediarios reactivos de oxígeno, puede causar cáncer. La exposición a estos agentes transformó las células de ratón in vitro y condujo al desarrollo de tumores in vivo.
Área de la Ciencia:
- Investigación biomédica en la investigación biomédica.
- Biología celular Biología celular.
- Oncología Oncología.
Sus antecedentes:
- La inflamación crónica es un factor de riesgo conocido para el cáncer.
- Los intermediarios reactivos de oxígeno (ROI) están implicados en el daño celular y la enfermedad.
- Comprender el vínculo directo entre la inflamación y la carcinogénesis es crucial.
Objetivo del estudio:
- Para investigar el potencial carcinogénico de los intermediarios reactivos de oxígeno (ROI) generados durante la inflamación.
- Para determinar si la exposición a los IRO puede inducir la transformación maligna en los fibroblastos de ratón.
- Para evaluar el desarrollo tumoral in vivo después de la exposición a IRO.
Principales métodos:
- Los fibroblastos de ratón C3H (10T 1/2 células) fueron expuestos a neutrófilos humanos o a un sistema libre de células que generaba superóxido.
- Las células tratadas se cultivaron in vitro o se inyectaron en ratones desnudos atímicos.
- La tumorigénesis y la transformación maligna fueron monitoreadas en ambos entornos experimentales.
Principales resultados:
- La exposición a los IRO indujo la transformación maligna en las células 10T 1/2 in vitro.
- Los ratones inyectados con células tratadas desarrollaron tumores benignos y malignos.
- Las células tumorigénicas derivadas de tumores benignos mostraron posterior progresión maligna.
Conclusiones:
- Los intermediarios reactivos de oxígeno asociados con la inflamación crónica pueden causar directamente la transformación maligna.
- El daño celular inducido por la inflamación es un factor significativo en la carcinogénesis.
- Estos hallazgos ponen de relieve un vínculo mecánico directo entre la inflamación y el desarrollo del cáncer.
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