Abstract
We identify a population of Protogenin-positive (PRTG+ve) MYChigh NESTINlow stem cells in the four-week-old human embryonic hindbrain that subsequently localizes to the ventricular zone of the rhombic lip (RLVZ). Oncogenic transformation of early Prtg+ve rhombic lip stem cells initiates group 3 medulloblastoma (Gr3-MB)-like tumors. PRTG+ve stem cells grow adjacent to a human-specific interposed vascular plexus in the RLVZ, a phenotype that is recapitulated in Gr3-MB but not in other types of medulloblastoma. Co-culture of Gr3-MB with endothelial cells promotes tumor stem cell growth, with the endothelial cells adopting an immature phenotype. Targeting the PRTGhigh compartment of Gr3-MB in vivo using either the diphtheria toxin system or chimeric antigen receptor T cells constitutes effective therapy. Human Gr3-MBs likely arise from early embryonic RLVZ PRTG+ve stem cells inhabiting a specific perivascular niche. Targeting the PRTGhigh compartment and/or the perivascular niche represents an approach to treat children with Gr3-MB.
| Original language | English |
|---|---|
| Pages (from-to) | 4733-4750.e26 |
| Number of pages | 18 |
| Journal | Cell |
| Volume | 187 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2024 |
| Publication type | A1 Journal article-refereed |
Keywords
- brain development
- brain tumor immunotherapy
- cancer genomics
- group 3 medulloblastoma
- perivascular niche
- rhombic lip
Publication forum classification
- Publication forum level 3
ASJC Scopus subject areas
- General Biochemistry,Genetics and Molecular Biology