8-Bromo-cAMP is a cell-permeable cAMP analogue and activator of CAMP-dependent protein kinase A that induces cell death and reduces proliferation.

In primary rat renal tubular epithelial cells, 8-Bromo-cAMP (0.1 mM, 48 h) significantly increased both mRNA and protein levels of Na⁺-K⁺-ATPase α1 and β1 subunits, and promoted their membrane localization, suggesting enhancement of tubular ion transport via PKA signaling[1]. In NRK-52E rat renal proximal tubule epithelial cells, 8-Bromo-cAMP (10⁻⁶–10⁻³ mol/L, 48 h) significantly increased protein and mRNA levels of Na⁺-K⁺-ATPase α1 and β1 subunits (most prominently at 10⁻⁴ mol/L), and promoted their membrane localization, suggesting regulation via the cAMP/PKA signaling pathway[2].

In renal denervation rat models, 8-Bromo-cAMP (0.5 mmol/L, perfused via the left renal artery at 0.05 mL/min for 60 min) significantly increased expression of Na⁺-K⁺-ATPase α1 and β1 subunits in the renal cortex, indicating its ability to enhance sodium pump activity and support renal ion transport in vivo[2].