Stat

YN11 is a selective inhibitor of Signal Transducer and Activator of Transcription 3 (STAT3) with a Kd of 11.9 μM. By directly binding to the SH2 domain, YN11 effectively inhibits the phosphorylation of STAT3, leading to decreased expression of downstream target proteins. This compound has demonstrated significant biological activity, inducing cell cycle arrest and promoting apoptosis in prostate cancer cells, while also inhibiting cell invasion and migration. In vivo studies indicate that YN11 suppresses tumor growth in prostate cancer xenograft models without causing significant body weight loss or histopathological changes in major organs, making it a valuable tool for research in prostate cancer therapy.