Methionine enkephalin inhibited cervical carcinoma via apoptosis promotion and reduction of myeloid derived suppressor cell infiltrated in tumor.

Na Qu, Ruizhe Wang, Yiming Meng, Ning Liu, Jingbo Zhai, Fengping Shan

International immunopharmacology 2022 Sep

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Immunotherapy for cervical carcinoma is becoming increasingly important recently. In these studies methionine enkephalin (menk) is shown to inhibit cervical tumor cell proliferation in vitro in association with an increase in the expression of apoptosis markers and mediators, including an increase in fas, caspase 8, and caspase 3 expression and intrinsic expression of the signaling pathway mediator bax. In vivo, tumor growth was restrained in mice xenotransplant model with typical pathological features of apoptosis. Furthermore, myeloid derived suppressor cells (MDSCs) had a significant decrease in circulation and in tumor site. In brief, these findings showed menk could inhibit tumor growth in vitro and in vivo, providing direction of further research and clinical application prospect. Copyright © 2022 Elsevier B.V. All rights reserved.

Citation

Na Qu, Ruizhe Wang, Yiming Meng, Ning Liu, Jingbo Zhai, Fengping Shan. Methionine enkephalin inhibited cervical carcinoma via apoptosis promotion and reduction of myeloid derived suppressor cell infiltrated in tumor. International immunopharmacology. 2022 Sep;110:108933