Adenylate cyclase 1 knockdown attenuates pirarubicin-induced cardiotoxicity

This study aimed to investigate the effects and possible mechanisms of adenylate cyclase 1 (ADCY1) on pirarubicin-induced cardiomyocyte injury. HL-1 cells were treated with pirarubicin (THP) to induce intracellular toxicity, and the extent of damage to mouse cardiomyocytes was assessed using CCK-8, Edu, flow cytometry, ROS, ELISA, RT-qPCR and western blotting. THP treatment reduced the viability of HL-1 cells, inhibited proliferation, induced apoptosis and triggered oxidative stress. In addition, the RT-qPCR results revealed that ADCY1 expression was significantly elevated in HL-1 cells, and molecular docking showed a direct interaction between ADCY1 and THP. Western blotting showed that ADCY1, phospho-protein kinase A and GRIN2D expression were also significantly elevated. Knockdown of ADCY1 attenuated THP-induced cardiotoxicity, possibly by regulating the ADCY1/PKA/GRIN2D pathway.