DNA Hypomethylation Is Not Cell Intrinsically Toxic to Polycomb Repressive Complex 2 Deficient Malignant Peripheral Nerve Sheath Tumors
Madilyn R. Stahl, Christopher M. Stehn, Zachary J. Seeman, Christopher Faulk, David A. Largaespada · 2026
Read DNA Hypomethylation Is Not Cell Intrinsically Toxic to Polycomb Repressive Complex 2 Deficient Malignant Peripheral Nerve Sheath Tumors by Madilyn R. Stahl, Christopher M. Stehn, Zachary J. Seeman, Christopher Faulk, David A. Largaespada (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13437926.txt.
Description
Stahl and colleagues test an idea about malignant peripheral nerve sheath tumors, aggressive cancers arising in people with neurofibromatosis type 1. Many of these tumors lose a gene silencing complex called PRC2. Earlier work hinted the cells survive only by methylating their DNA heavily, so removing methylation might kill them. Their 2026 study maps DNA methylation and gene activity in tumor lines and engineered human Schwann cells with and without PRC2. It then applies two methylation blocking drugs.
Losing PRC2 did not change global DNA methylation at all, undercutting the premise. Both drugs stripped methylation, yet they split in effect. Azacitidine killed tumor cells directly and stirred RNA processing genes. Decitabine caused no direct killing and stirred immune response genes instead. Methylation loss alone does not kill these tumor cells. The authors suggest pairing such drugs with other treatments rather than relying on them alone.
Catalog record
| CREATOR | Madilyn R. Stahl, Christopher M. Stehn, Zachary J. Seeman, Christopher Faulk, David A. Largaespada |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 28 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |