Imaging and multi-omics datasets converge to define different neural progenitor origins for ATRT-SHH subgroups

Nom de la revue
Nature Communications
María-Jesús Lobón-Iglesias, Mamy Andrianteranagna, Zhi-Yan Han, Céline Chauvin, Julien Masliah-Planchon, Valeria Manriquez, Arnault Tauziede-Espariat, Sandrina Turczynski, Rachida Bouarich-Bourimi, Magali Frah, Christelle Dufour, Thomas Blauwblomme, Liesbeth Cardoen, Gaelle Pierron, Laetitia Maillot, Delphine Guillemot, Stéphanie Reynaud, Christine Bourneix, Célio Pouponnot, Didier Surdez, Mylene Bohec, Sylvain Baulande, Olivier Delattre, Eliane Piaggio, Olivier Ayrault, Joshua J. Waterfall, Nicolas Servant, Kevin Beccaria, Volodia Dangouloff-Ros, Franck Bourdeaut

AbstractAtypical teratoid rhabdoid tumors (ATRT) are divided into MYC, TYR and SHH subgroups, suggesting diverse lineages of origin. Here, we investigate the imaging of human ATRT at diagnosis and the precise anatomic origin of brain tumors in the Rosa26-CreERT2::Smarcb1flox/flox model. This cross-species analysis points to an extra-cerebral origin for MYC tumors. Additionally, we clearly distinguish SHH ATRT emerging from the cerebellar anterior lobe (CAL) from those emerging from the basal ganglia (BG) and intra-ventricular (IV) regions. Molecular characteristics point to the midbrain-hindbrain boundary as the origin of CAL SHH ATRT, and to the ganglionic eminence as the origin of BG/IV SHH ATRT. Single-cell RNA sequencing on SHH ATRT supports these hypotheses. Trajectory analyses suggest that SMARCB1 loss induces a de-differentiation process mediated by repressors of the neuronal program such as REST, ID and the NOTCH pathway.