作者
Philippe Cassier,Raúl Navaridas,Mélanie Bellina,Nicolas Rama,Benjamin Ducarouge,Héctor Hernández‐Vargas,Jean‐Pierre Delord,Justine Lengrand,Andrea Paradisi,Laurent Fattet,Gwenaële Garin,Hanane Gheit,Cécile Dalban,Ievgenia Pastushenko,David Neves,Remy Jelin,Nicolas Gadot,Nicolas Braissand,Sophie Léon,Cyril Dégletagne,Xavier Matías‐Guiu,Mojgan Devouassoux‐Shisheboran,Eliane Mery-Lamarche,Justine Allard,Egor Zindy,Christine Decaestecker,Isabelle Salmon,David Pérol,Xavier Dolcet,Isabelle Ray‐Coquard,Cédric Blanpain,Agnès Bernet,Patrick Mehlen
摘要
Abstract Netrin-1 is upregulated in cancers as a protumoural mechanism 1 . Here we describe netrin-1 upregulation in a majority of human endometrial carcinomas (ECs) and demonstrate that netrin-1 blockade, using an anti-netrin-1 antibody (NP137), is effective in reduction of tumour progression in an EC mouse model. We next examined the efficacy of NP137, as a first-in-class single agent, in a Phase I trial comprising 14 patients with advanced EC. As best response we observed 8 stable disease (8 out of 14, 57.1%) and 1 objective response as RECIST v.1.1 (partial response, 1 out of 14 (7.1%), 51.16% reduction in target lesions at 6 weeks and up to 54.65% reduction during the following 6 months). To evaluate the NP137 mechanism of action, mouse tumour gene profiling was performed, and we observed, in addition to cell death induction, that NP137 inhibited epithelial-to-mesenchymal transition (EMT). By performing bulk RNA sequencing (RNA-seq), spatial transcriptomics and single-cell RNA-seq on paired pre- and on-treatment biopsies from patients with EC from the NP137 trial, we noted a net reduction in tumour EMT. This was associated with changes in immune infiltrate and increased interactions between cancer cells and the tumour microenvironment. Given the importance of EMT in resistance to current standards of care 2 , we show in the EC mouse model that a combination of NP137 with carboplatin-paclitaxel outperformed carboplatin-paclitaxel alone. Our results identify netrin-1 blockade as a clinical strategy triggering both tumour debulking and EMT inhibition, thus potentially alleviating resistance to standard treatments.