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Somatic CRISPR tumorigenesis and multiomic analysis reveal a pentose phosphate pathway disruption vulnerability in MPNSTs
Journal article   Open access   Peer reviewed

Somatic CRISPR tumorigenesis and multiomic analysis reveal a pentose phosphate pathway disruption vulnerability in MPNSTs

Gavin R. McGivney, Qierra R. Brockman, Nicholas Borcherding, Amanda Scherer, Adam J. Rauckhorst, Wade R. Gutierrez, Shane R. Solst, Collin D. Heer, Akshaya Warrier, Warren Floyd, …
Science advances, Vol.11(33), eadu2906
08/15/2025
DOI: 10.1126/sciadv.adu2906
PMCID: PMC12346278
PMID: 40802750
url
https://doi.org/10.1126/sciadv.adu2906View
Published (Version of record) Open Access

Abstract

Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive and chemo-resistant sarcomas with poor survival rates. Loss of CDKN2A or P53 following NF1 disruption is a key event in MPNST development. Here, we used CRISPR-Cas9 somatic tumorigenesis in mice to identify transcriptomic and metabolomic features distinguishing CDKN2A- versus P53-deleted MPNSTs. Convergent, multiomic analyses revealed that CDKN2A-deleted MPNSTs are especially dependent on the pentose phosphate pathway (PPP) and NADPH metabolism for growth and viability. Disruption of glucose-6-phosphate dehydrogenase (G6PD), the PPP rate-limiting enzyme, slowed CDKN2A-deleted MPNST growth and sensitized MPNSTs to standard-of-care chemotherapy. Knockdown of the redox-regulated transcription factor NRF2 slowed MPNST growth and decreased G6PD transcription. Analysis of patient MPNSTs identified a NRF2 gene signature correlating with tumor transformation. Furthermore, G6PD and NRF2 expression in PanCancer TCGA samples correlates with patient survival. This work identifies NRF2-PPP dependency as a targetable vulnerability in these difficult-to-treat MPNSTs, particularly in the NF1/CDKN2A-deleted majority.
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