HCN2 Promotes BGN Transcription via REST to Regulate Ferroptosis and Tumor Progression in Bladder Cancer

Area of Science:

• Oncology
• Molecular Biology
• Cell Biology

Background:

• Bladder cancer is a common malignancy requiring novel therapeutic targets.
• The role of hyperpolarization-activated cyclic nucleotide-gated channel 2 (HCN2) in bladder cancer remains unclear.
• Understanding molecular mechanisms is key to improving bladder cancer treatment and prognosis.

Purpose of the Study:

• To investigate the function and mechanism of HCN2 in bladder cancer.
• To assess the predictive value of HCN2 for clinical outcomes.
• To explore HCN2's role in regulating cell death pathways.

Main Methods:

• Bioinformatics analysis and immunohistochemistry on bladder cancer tissues.
• In vitro and in vivo models to study HCN2's impact on cell behavior.
• Molecular techniques including immunoprecipitation, chromatin immunoprecipitation, and dual-luciferase reporter assays.

Main Results:

• HCN2 was significantly upregulated in bladder cancer tissues, correlating with poorer clinical outcomes.
• HCN2 knockdown inhibited bladder cancer cell proliferation, migration, and invasion, while inducing apoptosis.
• HCN2 overexpression promoted REST nuclear translocation and BGN promoter binding, suppressing ferroptosis.

Conclusions:

• HCN2 plays a crucial role in bladder cancer progression by suppressing ferroptosis through the REST-BGN axis.
• HCN2 is a potential therapeutic target for bladder cancer treatment.
• This study provides novel insights into the molecular mechanisms driving bladder cancer.