The wnt/pyruvate kinase, muscle axis plays an essential role in the differentiation of mouse neuroblastoma cells
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View abstract on PubMed
Summary
This summary is machine-generated.All-trans retinoic acid (ATRA) activates Wnt/β-catenin signaling to inhibit pyruvate kinase M (PKM)-mediated glycolysis, promoting neuroblastoma cell differentiation. This Wnt/PKM axis offers new insights into nerve differentiation mechanisms.
Area Of Science
- Neuroscience
- Cell Biology
- Biochemistry
Background
- Neuronal differentiation and neurite growth are critical for nervous system development.
- All-trans retinoic acid (ATRA) induces neuroblastoma cell differentiation via pathways including Wnt/β-catenin signaling, but the precise mechanism is unclear.
- Pyruvate kinase M (PKM) is vital for neuroblastoma glycolysis and influences Wnt signaling in cancers.
Purpose Of The Study
- To investigate the hypothesis that the Wnt/PKM axis regulates neuroblastoma cell differentiation (Neuro-2a and N1E-115).
- To elucidate the role of PKM-mediated glycolysis in ATRA-induced neuronal differentiation.
Main Methods
- Utilized inhibitors and activators of Wnt/β-catenin and glycolytic pathways in ATRA-treated neuroblastoma cells.
- Generated cell lines with silenced or mutant PKM.
- Performed Western blot, qPCR, oxygen consumption rate, and extracellular acidification rate assays.
Main Results
- ATRA treatment activated Wnt signaling and inhibited PKM-mediated glycolysis, increasing oxidative phosphorylation and decreasing glycolysis.
- Wnt inhibition or PKM activation suppressed ATRA-induced differentiation; PKM silencing promoted differentiation, while PKM overexpression reversed this effect.
- Wnt activation promoted differentiation, which was attenuated by PKM activation.
Conclusions
- Wnt/β-catenin signaling drives neuroblastoma cell differentiation by suppressing PKM-mediated glycolysis during ATRA induction.
- The Wnt/PKM axis plays a key role in regulating nerve differentiation, offering a new theoretical framework for understanding glycolysis in this process.
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