Notch1/TAZ axis promotes aerobic glycolysis and immune escape in lung cancer

Area of Science:

• Oncology
• Cancer Metabolism
• Immunology

Background:

• Oncogenic signaling pathways reprogram cancer cell metabolism, promoting aerobic glycolysis and tumor growth.
• Cancer cells' ability to evade immunosurveillance suggests a link between metabolic reprogramming and immune escape.
• Notch1 signaling is dysregulated in lung cancer and associated with increased glycolysis.

Purpose of the Study:

• To investigate the role of Notch1 signaling in promoting aerobic glycolysis and immune escape in lung cancer.
• To elucidate the molecular mechanisms by which Notch1 influences glycolytic gene expression and interacts with TAZ.
• To evaluate the therapeutic potential of targeting the Notch1/TAZ axis in lung cancer.

Main Methods:

• Investigated Notch1's interaction with histone acetyltransferases p300 and pCAF to regulate glycolytic gene expression.
• Examined the functional interaction and feedback loop between Notch1 signaling and TAZ.
• Assessed the impact of aerobic glycolysis on Notch1/TAZ-mediated lung cancer growth in vitro and in vivo.
• Measured extracellular lactate levels and their effect on cytotoxic T-cell activity.

Main Results:

• Notch1 signaling promotes glycolytic gene expression via functional interaction with p300 and pCAF.
• Notch1 signaling forms a positive feedback loop with TAZ, enhancing Notch1 transcriptional activity independently of TEAD1.
• Aerobic glycolysis is crucial for Notch1/TAZ axis modulation of lung cancer growth.
• The Notch1/TAZ axis increases extracellular lactate, inhibiting cytotoxic T-cell activity and promoting cancer cell invasion.

Conclusions:

• The interaction between Notch1 and TAZ promotes aerobic glycolysis and immune escape in lung cancer.
• Targeting Notch1 and TAZ presents potential therapeutic strategies for lung cancer.
• These findings have significant implications for clinical translation in lung cancer treatment.