miRNAs as dynamic mediators of the EMT and TEM process in the development and progress of clear cell renal tumor: its usefulness as biomarkers and potential therapeutic targets (Q3168466)

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Project Q3168466 in Spain
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miRNAs as dynamic mediators of the EMT and TEM process in the development and progress of clear cell renal tumor: its usefulness as biomarkers and potential therapeutic targets
Project Q3168466 in Spain

    Statements

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    51,000.0 Euro
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    102,000.0 Euro
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    50.0 percent
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    1 January 2019
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    31 March 2022
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    FUNDACION INVESTIGACION BIOMEDICA HOSPITAL RAMON Y CAJAL
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    40°25'0.12"N, 3°42'12.89"W
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    28079
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    La Transición Epitelio Mesénquima (TEM) es proceso crucial en el desarrollo y progresión tumoral. En el carcinoma renal de células claras (CRcc), originado a partir de células del epitelio proximal tubular, la TEM se asocia a un peor pronóstico de la enfermedad, por promover metástasis y resistencia a fármacos. Por otro lado, el proceso inverso, la Transición Mesénquima Epitelio (TME) es necesario para el establecimiento de la metástasis en los órganos diana de este tumor, hígado y pulmón, tras la preparación del nicho metastático por señales secretadas por él. En el CRcc, TGFb, TNFa y la mutación en VHL y estabilización de HIF son estímulos pro-TEM que señalizan a través de rutas de señalización que incluyen miRNAs entre otros. Los miRNAs son reguladores trascripcionales críticos en transformación y progresión tumoral que además son secretados al medio extracelular y contribuyen a preparar el nicho metastático. Nosotros hemos identificado miRNAs responsables de la respuesta del túbulo proximal a la agresión incluyendo miR127, miR10a y miR126 que además pueden estar implicados en desarrollo y progresión de CRcc por mediar TEM y TME como indican nuestros resultados preliminares en biopsias de tumor renal y cultivos celulares. Proponemos caracterizar el papel de miR127, miR10a y miR126 en este tumor, modulándolos en modelos in vitro de células de carcinoma renal bajo estímulos pro-TEM, en modelo in vivo de CRcc por inyección intrarenal de células tumorales, así como en biopsias renales y sueros de pacientes con carcinoma renal resecable y metastásico, en correlación con datos clínicos. Así, estos miRNAs y sus dianas podrían constituirse como biomarcadores útiles para la caracterización y estratificación más precisa de pacientes, establecer su pronóstico y proponer un manejo personalizado de los mismos, así como potenciales dianas de intervención terapéutica en este contexto tumoral. (Spanish)
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    The Mesenchyma Epithelium Transition (MTE) is a crucial process in tumor development and progression. In clear cell renal carcinoma (CRCC), originating from tubular proximal epithel cells, TEM is associated with a worse prognosis of the disease, promoting metastasis and drug resistance. On the other hand, the reverse process, the Epithelium Mesenchymal Transition (MTE) is necessary for the establishment of metastasis in the target organs of this tumor, liver and lung, after the preparation of the metastatic niche by signals secreted by it. In CRCC, TGFb, TNFa and VHL mutation and HIF stabilisation are pro-TEM stimuli that signal through signaling routes that include miRNAs among others. MiRNAs are critical transcriptional regulators in tumor transformation and progression that are also secreted into the extracellular medium and contribute to the preparation of the metastatic niche. We have identified miRNAs responsible for the proximal tubulus response to aggression including miR127, miR10a and miR126 which may also be involved in the development and progression of CRC by mediating TEM and MSD as indicated by our preliminary results in renal tumor biopsies and cell cultures. We propose to characterise the role of miR127, miR10a and miR126 in this tumor, modifying them in in vitro models of renal carcinoma cells under pro-TEM stimuli, in vivo model of CRCC by intrarenal injection of tumor cells, as well as in renal biopsies and serums of patients with resectable and metastatic renal carcinoma, in correlation with clinical data. Thus, these miRNAs and their targets could be considered as useful biomarkers for the more precise characterisation and stratification of patients, establish their prognosis and propose personalised management of them, as well as potential targets for therapeutic intervention in this tumor context. (English)
    12 October 2021
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    Madrid
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    Identifiers

    PI18_00267
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