Células mieloides supresoras en hepatocarcinoma y neoplasias post-trasplante renal
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2026
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23/10/2025
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Universidad Complutense de Madrid
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Abstract
Las células supresoras de estirpe mieloide (MDSC) son una población heterogénea de células mieloides inmaduras con capacidad inmunosupresora que se acumulan en condiciones de inflamación crónica no resuelta. Se distinguen tres subpoblaciones de MDSC atendiendo a su densidad, morfología y marcadores fenotípicos: monocíticas o M-MDSC, definidas comoCD33+CD11b+CD14+CD15-HLA-DR-/low, polimorfonucleares o PMN-MDSC, identificadas como CD33+CD14-CD15+HLA-DR- y una tercera subpoblación más inmadura denominada early-stage o eMDSC y definida como CD33+CD11b+CD14-CD15-HLA-DR-.Gracias a un amplio repertorio de mecanismos inmunosupresores, las MDSC juegan un papel fundamental en la evasión tumoral del sistema inmunitario impidiendo, sobre todo, la función de linfocitos T pero también la de linfocitos B, células Natural Killer y células dendríticas a la vez que favorecen poblaciones supresoras como linfocitos T reguladores o macrófagos tolerogénicos. En hepatocarcinoma (HCC), la presencia de MDSC se ha asociado con una mayor progresión tumoral, peor pronóstico y resistencia a tratamientos. Por tanto, una caracterización detallada de las subpoblaciones de MDSC en HCC y su relación con la progresión de la enfermedad podría ofrecer herramientas diagnósticas y terapéuticas relevantes...
Myeloid-derived suppressor cells (MDSC) are a heterogeneous population of immature myeloid cells with immunosuppressive capacity that accumulate under conditions of unresolved chronic inflammation. Three main MDSC subsets are distinguished based on their density, morphology, and phenotypic markers: monocytic MDSC (M-MDSC), defined as CD33+CD11b+CD14+CD15-HLA-DR-/low; polymorphonuclear MDSC (PMN-MDSC), identified as CD33+CD14-CD15+HLA-DR-; and a more immature subset known as early-stage MDSC (eMDSC), defined as CD33+CD11b+CD14-CD15-HLA-DR-.Thanks to a wide range of immunosuppressive mechanisms, MDSC play a key role in tumor immune evasion, mainly by inhibiting T cell function, but also affecting B cells, Natural Killer cells, and dendritic cells, while simultaneously promoting suppressive populations such as regulatory T cells and tolerogenic macrophages. In hepatocellular carcinoma (HCC), the presence of MDSC has been associated with increased tumor progression, poor prognosis, and resistance to treatment. Therefore, detailed characterization of MDSC subsets in HCC and their role in disease progression could provide valuable diagnostic and therapeutic tools...
Myeloid-derived suppressor cells (MDSC) are a heterogeneous population of immature myeloid cells with immunosuppressive capacity that accumulate under conditions of unresolved chronic inflammation. Three main MDSC subsets are distinguished based on their density, morphology, and phenotypic markers: monocytic MDSC (M-MDSC), defined as CD33+CD11b+CD14+CD15-HLA-DR-/low; polymorphonuclear MDSC (PMN-MDSC), identified as CD33+CD14-CD15+HLA-DR-; and a more immature subset known as early-stage MDSC (eMDSC), defined as CD33+CD11b+CD14-CD15-HLA-DR-.Thanks to a wide range of immunosuppressive mechanisms, MDSC play a key role in tumor immune evasion, mainly by inhibiting T cell function, but also affecting B cells, Natural Killer cells, and dendritic cells, while simultaneously promoting suppressive populations such as regulatory T cells and tolerogenic macrophages. In hepatocellular carcinoma (HCC), the presence of MDSC has been associated with increased tumor progression, poor prognosis, and resistance to treatment. Therefore, detailed characterization of MDSC subsets in HCC and their role in disease progression could provide valuable diagnostic and therapeutic tools...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, leída el 23-10-2025













