Abstract
Benign prostatic hyperplasia (BPH) is a chronic proliferative non-tumorous disease that mainly bothers males older than 50 and significantly disturbs the quality of life. Cryptotanshinone (CTS), a herbal extract, has been proven with therapeutic effects on various diseases. However, the effects and possible mechanisms of CTS in BPH have not yet been elucidated. This study aims to investigate the efficacy of CTS on the BPH-associated pathological processes and the possible mechanisms underlying it. Herein, CTS was intragastrically administrated to estradiol/testosterone (E2/T) (1:100)-induced BPH rats, and finasteride (Fi) was used as the positive control. Human benign prostatic hyperplasia epithelial cells (BPH-1) and normal human prostate stromal cells (WPMY-1) were used for the in vitro experiments. Results indicated that E2/T injection was able to induce BPH manifestation, featured with increased prostate index. Furthermore, it accelerated proliferation, epithelial-mesenchymal transition (EMT), stromal collagen deposition, and inhibited apoptosis of rat prostate. However, the administration of CTS partially reversed the changes mentioned above. The therapeutic effects of CTS on BPH were also confirmed by in vitro experiments. The efficacy of CTS on these processes might be attributed to the suppression of AR and EGFR/STAT3 axis activity. In conclusion, CTS might suppress BPH progression by modulating proliferation, apoptosis, EMT, and stromal collagen deposition via suppressing AR and EGFR/STAT3 axis.
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