Therapeutic efficacy and anti-inflammatory mechanism of baicalein on endometriosis progression in patient-derived cell line and mouse model.

Background: Baicalein is a flavonoid extracted from the roots of Scutellaria baicalensis G. that has anti-inflammatory and antitumor effects. However, therapeutic mechanisms of baicalein in patients with endometriosis in vivo have yet to be elucidated. As a chronic inflammatory gynecological disease, endometriosis causes pain and infertility, and has no complete treatment to date. Current treatment strategies cause several side effects and have high recurrence rates.
Purpose: This study aimed to identify the in vivo therapeutic effects of baicalein on endometriosis and verify the action mechanisms of baicalein, focusing on regulating inflammation.
Methods: In this study, an autologous transplant mouse model and patient-derived immortalized human ovarian endometriotic stromal cells (ihOESCs) were used to investigate the therapeutic activities of baicalein. The mouse model was administered with 40 mg/kg baicalein by oral gavage for 4 weeks, and the treatment outcomes of baicalein-treated mice were compared with vehicle- and dienogest-treated groups. ihOESCs were treated with 0-5 μg/ml baicalein for in vitro studies.
Results: Baicalein significantly alleviated the progression of endometriosis in mouse models. Baicalein reduced the expression of proinflammatory cytokines in endometriotic lesions and ihOESCs, and cytokine expression and T cell proportions in mouse spleen. in vitro results showed that baicalein increased mitochondrial calcium flux and induced mitochondrial depolarization and ROS generation in ihOESCs. Ultimately, baicalein inactivated the MAPK/PI3K signaling and induced cell death in ihOESCs.
Conclusion: In conclusion, baicalein effectively attenuated the progression of endometriosis through its anti-inflammatory activities. Baicalein can be an alternative or supplemental treatment for endometriosis to ameliorate the side effects of hormonal therapy.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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