YY1-induced up-regulation of FOXE1 is negatively regulated by miR-129-5p and contributes to the progression of papillary thyroid microcarcinoma.
Pathol Res Pract 2021;
221:153337. [PMID:
33798911 DOI:
10.1016/j.prp.2020.153337]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/25/2020] [Accepted: 12/30/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND
Papillary thyroid microcarcinoma (PTM) belongs to papillary carcinomas whose length is about 1.0 cm. According to previous studies, FOXE1 is a transcription factor involved in the progression of papillary thyroid carcinoma (PTC). However, its detailed upstream mechanism remains unknown in PTM.
OBJECTIVE
Our study aimed at detecting and verifying the up-regulation of FOXE1 in PTM cell lines.
METHODS
FXOE1 expression was detected in PTM and normal cells through RT-qPCR. Loss-of-function experiments were conducted to identify the effect of silenced FOXE1 on cell proliferation, apoptosis, migration and invasion. Mechanism experiments were carried out to explore the upstream molecular mechanism of FOXE1.
RESULTS
Knockdown of FOXE1 could lead to the inhibition on cell proliferation, migration and invasion while positively regulating cell apoptosis. Importantly, Yin-Yang-1 (YY1) could boost the transcription of FOXE1, thereby upregulating FOXE1. Also, the binding potential of miR-129-5p to FOXE1 was identified in PTM cells and MiR-129-5p could target FOXE1. In addition, the cellular processes in PTM were hindered with the increase of miR-129-5p expression level.
CONCLUSION
Our research suggested that the up-regulation of FOXE1 is regulated by YY1 and miR-129-5p, which may contribute to PTM progression.
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