Polyamine acetylation mediates crosstalk between cancer cells and myeloid cells to promote mesenchymal/plurimetabolic states in glioblastoma
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View abstract on PubMed
Summary
This summary is machine-generated.Polyamines, particularly N1-acetylspermidine, fuel glioblastoma (GBM) growth and immune evasion. Inhibiting polyamine acetylation and transport can reduce myeloid cell infiltration and enhance treatment efficacy in GBM.
Area Of Science
- Oncology
- Metabolic pathways
- Cancer immunology
Background
- Metabolic reprogramming is crucial for glioblastoma (GBM) subtypes, malignant cell states, and tumor-immune interactions.
- Investigating polyamine metabolic rewiring offers insights into GBM's intrinsic and microenvironment-dependent processes for subtype classification.
Purpose Of The Study
- To elucidate the role of polyamine metabolic rewiring in glioblastoma.
- To understand how polyamine metabolism influences GBM subtype classification and tumor-immune crosstalk.
Main Methods
- Polyamine quantification using liquid chromatography/tandem mass spectrometry (LC-MS/MS) in human and murine GBM.
- Single-cell RNA sequencing, metabolic profiling, and functional experiments to study SAT1 and N1-acetylspermidine.
- In vivo studies involving genetic disruption and pharmacological inhibition.
Main Results
- Elevated polyamine acetylation in GBM tumors classifies them as mesenchymal/plurimetabolic.
- N1-acetylspermidine, regulated by SAT1, impacts tumor cell glucose metabolism and facilitates metabolic crosstalk with myeloid cells (TAMs).
- Uptake of N1-acetylspermidine by myeloid cells enhances their respiration and migration; inhibition reduces myeloid infiltration and sensitizes tumors to therapy.
Conclusions
- SAT1 and N1-acetylspermidine connect tumor cell and TAM metabolic activity, promoting mesenchymal/plurimetabolic GBM states.
- This metabolic interplay contributes to therapeutic resistance in glioblastoma.
- Targeting polyamine metabolism presents a potential therapeutic strategy for GBM.
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