GABAergic neuronal lineage development determines clinically actionable targets in diffuse hemispheric glioma, H3G34-mutant
- Cancer Cell. 2024 Aug 27:S1535-6108(24)00305-2. doi: 10.1016/j.ccell.2024.08.006.
- 1. Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA 02215, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Neurology with Experimental Neurology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin und Humboldt-Universität zu Berlin, 10117 Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Digital Clinician Scientist Program, 10117 Berlin, Germany.
- 2. Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA 02215, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA.
- 3. Division of Molecular Pathology, The Institute of Cancer Research, Sutton, Surrey SM2 5 NG, UK.
- 4. Center for Neuropathology, Ludwig-Maximilians-University, 81377 Munich, Germany.
- 5. Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA.
- 6. Children & Young People's Unit, Royal Marsden Hospital NHS Trust, Sutton, Surrey SM2 5 NG, UK.
- 7. Division of Cancer Therapeutics, The Institute of Cancer Research, London SW7 3RK, UK.
- 8. Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA 02215, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria; Center for Cancer Research, Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria.
- 9. Lurie Family Imaging Center, Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA.
- 10. Department of Onco-haematology, Gene and Cell Therapy, Bambino Gesù Children's Hospital-IRCCS, 00165 Rome, Italy.
- 11. Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria.
- 12. Department of Neurosurgery, Medical University of Vienna, 1090 Vienna, Austria.
- 13. Clinical Cell Biology, Children's Cancer Research Institute (CCRI), Vienna 1090, Austria.
- 14. Department of Neurobiology, Harvard Medical School, Boston, MA 02215, USA.
- 15. Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna 1090, Austria.
- 16. Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pathology, Brigham and Women's Hospital, Boston, MA 02215, USA; Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA.
- 17. Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA.
- 18. Department of Pediatrics, University of Michigan, Ann Arbor, MI 48109, USA.
- 19. Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden.
- 20. Division of Neurodegeneration, Department of Neurobiology, Care Sciences and Society, Karolinska Institute, 17177 Stockholm, Sweden.
- 21. Allen Institute for Brain Science, Seattle, WA 98109, USA.
- 22. Departments of Neurosurgery and Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA.
- 23. Murdoch Children's Research Institute, Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia.
- 24. Department of Neurosurgery, St George's Hospital NHS Trust, London SW17 0QT, UK.
- 25. Department of Neuropathology, King's College Hospital NHS Trust, London SE5 9RS, UK.
- 26. Department of Neurosurgery, King's College Hospital NHS Trust, London SE5 9RS, UK.
- 27. Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
- 28. Ann & Robert H Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA.
- 29. Laboratory of Molecular Oncology, Hospital Sant Joan de Déu, 08950 Barcelona, Spain.
- 30. Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
- 31. University College London Great Ormond Street Institute for Child Health, London WC1N 1EH, UK.
- 32. Children & Young People's Unit, Royal Marsden Hospital NHS Trust, Sutton, Surrey SM2 5 NG, UK; Division of Clinical Studies, The Institute of Cancer Research, London SW7 3RK, UK.
- 33. Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA 02215, USA; Department of Pediatrics and Adolescent Medicine, Comprehensive Center for Pediatrics and Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria.
- 34. Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Howard Hughes Medical Institute, Stanford, CA, USA.
- 35. Division of Molecular Pathology, The Institute of Cancer Research, Sutton, Surrey SM2 5 NG, UK. Electronic address: [email protected].
- 36. Department of Pediatric Oncology, Dana-Farber Boston Children's Cancer and Blood Disorders Center, Boston, MA 02215, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA. Electronic address: [email protected].
Diffuse hemispheric gliomas, H3G34R/V-mutant (DHG-H3G34), are lethal brain tumors lacking targeted therapies. They originate from interneuronal precursors; however, leveraging this origin for therapeutic insights remains unexplored. Here, we delineate a cellular hierarchy along the interneuron lineage development continuum, revealing that DHG-H3G34 mirror spatial patterns of progenitor streams surrounding interneuron nests, as seen during human brain development. Integrating these findings with genome-wide CRISPR-Cas9 screens identifies genes upregulated in interneuron lineage progenitors as major dependencies. Among these, CDK6 emerges as a targetable vulnerability: DHG-H3G34 tumor cells show enhanced sensitivity to CDK4/6 inhibitors and a CDK6-specific degrader, promoting a shift toward more mature interneuron-like states, reducing tumor growth, and prolonging xenograft survival. Notably, a patient with progressive DHG-H3G34 treated with a CDK4/6 inhibitor achieved 17 months of stable disease. This study underscores interneuronal progenitor-like states, organized in characteristic niches, as a distinct vulnerability in DHG-H3G34, highlighting CDK6 as a promising clinically actionable target.