Multimodal single-cell and bulk glioma analyses
Glioma intratumoral heterogeneity enables adaptation to challenging microenvironments and contributes to therapeutic resistance. We integrated 914 single-cell DNA methylomes, 55,284 single-cell transcriptomes, and bulk multi-omic profiles across 11 adult IDH-mutant or IDH-wild-type gliomas to delineate sources of intratumoral heterogeneity. We show that local DNA methylation disorder associates with cell-to-cell DNA methylation differences, is elevated in more aggressive tumors, links with transcriptional disruption, and is altered in environmental stress response. Glioma cells under in vitro hypoxic and irradiation stress increased local DNA methylation disorder and shifted cell states. We identified a positive association between genetic and epigenetic instability that was supported in bulk longitudinally collected DNA methylation data. Increased DNA methylation disorder associated with accelerated disease progression, and recurrently selected DNA methylation changes were enriched for environmental stress response pathways. Our work identifies an epigenetically facilitated adaptive stress response process and highlights the importance of epigenetic heterogeneity in shaping therapeutic outcomes.
- Type: Other
- Archiver: European Genome-Phenome Archive (EGA)
Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data
Dataset ID | Description | Technology | Samples |
---|---|---|---|
EGAD00001007769 | Illumina HiSeq 4000 | 914 | |
EGAD00001007770 | Illumina NovaSeq 6000 | 60 | |
EGAD00001007771 | Illumina NovaSeq 6000 | 22 | |
EGAD00001007772 | Illumina HiSeq 4000 Illumina NovaSeq 6000 | 11 | |
EGAD00010002157 | Illumina Infinium MethylationEPIC BeadChip | 11 |
Publications | Citations |
---|---|
Single-cell multimodal glioma analyses identify epigenetic regulators of cellular plasticity and environmental stress response.
Nat Genet 53: 2021 1456-1468 |
105 |
Glioblastoma heterogeneity at single cell resolution.
Oncogene 42: 2023 2155-2165 |
30 |
Dissecting the tumor microenvironment of epigenetically driven gliomas: Opportunities for single-cell and spatial multiomics.
Neurooncol Adv 5: 2023 vdad101 |
0 |
Single-cell transcriptomics reveals IRF7 regulation of the tumor microenvironment in isocitrate dehydrogenase wild-type glioma.
MedComm (2020) 5: 2024 e754 |
0 |