Multilevel Regulation of NF-κB Signaling by NSD2 Suppresses Kras-Driven Pancreatic Tumorigenesis
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View abstract on PubMed
Summary
This summary is machine-generated.NSD2 acts as a tumor suppressor in pancreatic cancer by inhibiting NF-κB signaling. Loss of NSD2 promotes pancreatic ductal adenocarcinoma (PDAC) and sensitizes tumors to gemcitabine, suggesting new therapeutic avenues.
Area Of Science
- Oncology
- Epigenetics
- Molecular Biology
Background
- Pancreatic ductal adenocarcinoma (PDAC) presents a significant clinical challenge with poor outcomes.
- The H3K36-specific di-methyltransferase NSD2 is implicated in tumorigenesis, but its role in PDAC is unclear.
Purpose Of The Study
- To investigate the function of NSD2 in Kras-driven pancreatic tumorigenesis.
- To elucidate the molecular mechanisms underlying NSD2's role in PDAC.
- To explore therapeutic strategies targeting NSD2 in PDAC.
Main Methods
- Utilized Kras-driven mouse models of pancreatic cancer.
- Assessed NSD2's impact on inflammation, ductal metaplasia, and tumorigenesis.
- Investigated NSD2's interaction with NF-κB signaling pathway components (p65, IκBα).
- Analyzed NSD2 expression and its correlation with p65 in human PDAC samples.
Main Results
- NSD2 loss accelerated Kras-driven pancreatic tumorigenesis and associated inflammation.
- NSD2-mediated H3K36me2 enhanced IκBα expression, inhibiting p65 phosphorylation and nuclear translocation.
- NSD2 directly interacted with p65, attenuating its transcriptional activity.
- NF-κB inhibition ameliorated PDAC in Nsd2-deficient mice and sensitized them to gemcitabine.
- Reduced NSD2 expression and increased nuclear p65 were observed in PDAC patients.
Conclusions
- NSD2 functions as a tumor suppressor in pancreatic cancer by inhibiting NF-κB signaling.
- NSD2 suppresses PDAC through epigenetic regulation of IκBα and direct interaction with p65.
- Targeting NF-κB signaling in combination with gemcitabine represents a promising therapeutic strategy for PDAC patients with low NSD2 expression.
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