Open AccessLong non‐coding RNA DIO3OS/let‐7d/NF‐κB2 axis regulates cells proliferation and metastasis of thyroid cancer cells
Author(s) -
Wang Mingming,
Li Jin,
Zuo Zhongkun,
Ren Chutong,
Tang Tenglong,
Long Chen,
Gong Yi,
Ye Fei,
Wang Zhihong,
Huang Jiangsheng
Publication year - 2021
Publication title -
journal of cell communication and signaling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.329
H-Index - 44
eISSN - 1873-961X
pISSN - 1873-9601
DOI - 10.1007/s12079-020-00589-w
Subject(s) - thyroid cancer , gene knockdown , cancer research , viability assay , cell growth , carcinogenesis , cancer , cancer cell , cell , metastasis , thyroid carcinoma , biology , medicine , thyroid , cell culture , endocrinology , genetics
Due to the steadily rising morbidity and mortality, thyroid cancer remains the most commonly seen endocrine cancer. The present study attempted to investigate the mechanism from the perspective of long non‐coding RNA (lncRNA) regulation. We identified 53 markedly increased lncRNAs in thyroid cancer samples according to TCGA data. Among them, high lncRNA DIO3OS expression was a risk factor for thyroid cancer patients’ poorer overall survival. DIO3OS showed to be considerably increased within thyroid cancer tissue samples and cells. Knocking down DIO3OS within thyroid carcinoma cells suppressed cancer cell viability, the capacity of DNA synthesis, cell invasion, as well as cell migration; besides, proliferating markers, ki‐67 and PCNA, were decreased by DIO3OS knockdown. Cancer bioinformatics analysis suggested that NF‐κB2 might be related to DIO3OS function in thyroid cancer carcinogenesis. NF‐κB2 was positively correlated with DIO3OS, and DIO3OS knockdown decreased NF‐κB2 protein levels. Knocking down NF‐κB2 within thyroid carcinoma cells suppressed cancer cell viability, the capacity of DNA synthesis, cell invasion, cell migration, and the protein levels of proliferating markers. Let‐7d directly targeted DIO3OS and NF‐κB2; DIO3OS knockdown upregulated let‐7d expression. The overexpression of let‐7d suppressed cancer cell viability, the capacity of DNA synthesis, cell invasion, cell migration, as well as the protein levels of proliferating markers. Let‐7d inhibition remarkably attenuated the functions of DIO3OS knockdown in NF‐κB2 expression and thyroid cancer cell phenotype. In conclusion, DIO3OS/let‐7d/NF‐κB2 axis regulates the viability, DNA synthesis capacity, invasion, and migration of thyroid cancer cells. The clinical application of this axis needs further in vivo and clinical investigation.