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MiR-221/222 promote migration and invasion, and inhibit autophagy and apoptosis by modulating ATG10 in aggressive papillary thyroid carcinoma

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Abstract

MicroRNA (miRNA) has been reported to exert important functions in papillary thyroid carcinomas (PTC). However, the role of miRNA in aggressive PTC (APTC) remains unclear. Here, we investigated the diagnostic potentials and mechanisms of miR-221/222 in APTC. Results showed that miR-221/222 were markedly up-regulated in PTC, compared with the adjacent normal tissue (ANT). A high expression of miR-221/222 were associated with a primary tumor, regional lymph node, and distant metastasis (TNM) stage, multicentricity, lymph node metastasis, and extra-thyroidal extension. Receiver operating characteristic (ROC) curve analysis indicated that miR-221/222 could be used as APTC diagnostic markers. Moreover, miR-221/222 tremendously promoted migration and invasion and inhibited apoptosis and autophagy in PTC cells. A luciferase assay showed that miR-221/222 inhibited the fluorescent activity of autophagy-related protein 10 (ATG10). Furthermore, miR-221/222 decreased ATG10 mRNA and protein levels. Silencing of ATG10 significantly abrogated the effect of miR-221/222 on apoptosis and autophagy. We suggested that miR-221/222 can promote migration and invasion, and inhibit autophagy and apoptosis by targeting ATG10 in APTC.

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Data availability

The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was sponsored by the third batch of ten hundred thousand project of health and family planning system in Jing’An district, Shanghai (JWRC2014Q13).

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Contributions

Conceptualization and funding acquisition: XY. Data curation: HS and ZL. Formal analysis: HY and LW. Investigation: HS, ZL, BM and HL. Methodology:BY, SH and ZL. Writing—original draft: HS and ZL. Writing—review and editing: HS, WL, JT and HY. All authors read and approved the final manuscript.

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Correspondence to Xiaoxing Yin.

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The authors declare that they have no competing interests.

Ethics approval and consent to participate

This study was approved by the Ethics Committee (number: 2016-39) of Jing’An District Central Hospital (Shanghai, China). Written informed consent forms were obtained from all the subjects and their patients in this study.

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All patients provided informed consent and agreed to publish.

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Shen, H., Lin, Z., Shi, H. et al. MiR-221/222 promote migration and invasion, and inhibit autophagy and apoptosis by modulating ATG10 in aggressive papillary thyroid carcinoma. 3 Biotech 10, 339 (2020). https://doi.org/10.1007/s13205-020-02326-x

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  • DOI: https://doi.org/10.1007/s13205-020-02326-x

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