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- Title
MiR-218 produces anti-tumor effects on cervical cancer cells in vitro.
- Authors
Zhu, Li; Tu, Huaidong; Liang, Yanmei; Tang, Dihong
- Abstract
Background: As indoleamine-2,3-dioxygenase 1 (IDO1) is critical in tumor immune escape, we determined to study the regulatory mechanism of miR-218 on IDO1 in cervical cancer. Methods: Real-time PCR (RT-qPCR) was carried out to measure the expression of miR-218. RT-qPCR and Western blot were performed to detect the expression of IDO1 in cervical cancer. Dual-luciferase reporter assay was used to determine the binding of miR-218 on the IDO1 3′UTR. Cell viability, apoptosis, and related factors were determined using cell counting kit-8 (CCK-8), Annexin-V/PI (propidium) assay, enzyme-linked immunosorbnent assay (ELISA), RT-qPCR, and Western blot assays after miR-218 mimics has been transfected to HeLa cervical cancer cells. Results: MiR-218 was downregulated in cervical cancer. The expression of miR-218 was negatively correlated with IDO1 in cervical cancer tissues and cells. IDO1 is a direct target of miR-218. MiR-218 overexpression was found to inhibit cell viability and promoted apoptosis via activating the expression of Cleaved-Caspase-3 and to inhibit the expression of Survivin, immune factors (TGF-β, VEGF, IL-6, PGE2, COX-2), and JAK2/STAT3 pathway. Conclusion: MiR-218 inhibits immune escape of cervical cancer cells by direct downregulating IDO1.
- Subjects
CERVICAL cancer; MICRORNA; ANTINEOPLASTIC agents; INDOLEAMINE 2,3-dioxygenase; IMMUNE response; IN vitro studies; GENETICS
- Publication
World Journal of Surgical Oncology, 2018, Vol 16, Issue 1, pN.PAG
- ISSN
1477-7819
- Publication type
Article
- DOI
10.1186/s12957-018-1506-3