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1.
Nature ; 620(7973): 402-408, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37532929

RESUMEN

Epithelial-to-mesenchymal transition (EMT) regulates tumour initiation, progression, metastasis and resistance to anti-cancer therapy1-7. Although great progress has been made in understanding the role of EMT and its regulatory mechanisms in cancer, no therapeutic strategy to pharmacologically target EMT has been identified. Here we found that netrin-1 is upregulated in a primary mouse model of skin squamous cell carcinoma (SCC) exhibiting spontaneous EMT. Pharmacological inhibition of netrin-1 by administration of NP137, a netrin-1-blocking monoclonal antibody currently used in clinical trials in human cancer (ClinicalTrials.gov identifier NCT02977195 ), decreased the proportion of EMT tumour cells in skin SCC, decreased the number of metastases and increased the sensitivity of tumour cells to chemotherapy. Single-cell RNA sequencing revealed the presence of different EMT states, including epithelial, early and late hybrid EMT, and full EMT states, in control SCC. By contrast, administration of NP137 prevented the progression of cancer cells towards a late EMT state and sustained tumour epithelial states. Short hairpin RNA knockdown of netrin-1 and its receptor UNC5B in EPCAM+ tumour cells inhibited EMT in vitro in the absence of stromal cells and regulated a common gene signature that promotes tumour epithelial state and restricts EMT. To assess the relevance of these findings to human cancers, we treated mice transplanted with the A549 human cancer cell line-which undergoes EMT following TGFß1 administration8,9-with NP137. Netrin-1 inhibition decreased EMT in these transplanted A549 cells. Together, our results identify a pharmacological strategy for targeting EMT in cancer, opening up novel therapeutic interventions for anti-cancer therapy.


Asunto(s)
Anticuerpos Monoclonales , Carcinoma de Células Escamosas , Transición Epitelial-Mesenquimal , Netrina-1 , Neoplasias Cutáneas , Animales , Humanos , Ratones , Células A549 , Carcinoma de Células Escamosas/tratamiento farmacológico , Carcinoma de Células Escamosas/patología , Línea Celular Tumoral , Transición Epitelial-Mesenquimal/efectos de los fármacos , Receptores de Netrina/antagonistas & inhibidores , Receptores de Netrina/deficiencia , Receptores de Netrina/genética , Netrina-1/antagonistas & inhibidores , Netrina-1/deficiencia , Netrina-1/genética , ARN Interferente Pequeño/genética , ARN Interferente Pequeño/farmacología , Modelos Animales de Enfermedad , Neoplasias Cutáneas/tratamiento farmacológico , Neoplasias Cutáneas/patología , Anticuerpos Monoclonales/farmacología , Anticuerpos Monoclonales/uso terapéutico , Metástasis de la Neoplasia/tratamiento farmacológico , Análisis de Expresión Génica de una Sola Célula , RNA-Seq , Molécula de Adhesión Celular Epitelial/metabolismo , Ensayos Antitumor por Modelo de Xenoinjerto , Factor de Crecimiento Transformador beta1/farmacología
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