Abstract
Long noncoding RNA HOXD cluster antisense RNA 1 (HOXD-AS1) has been found to play a crucial role in the tumorigenesis and progression of human cancer. However, the role of HOXD-AS1 in papillary thyroid cancer is still unknown. The purpose of this study was to investigate the clinical value and biological function of HOXD-AS1 in papillary thyroid cancer. The results showed HOXD-AS1 is overexpressed in papillary thyroid cancer tissues and cell lines compared with matching nontumor tissue specimens and normal thyroid cell line, respectively. High expression of HOXD-AS1 was associated with elderly people, advanced clinical stage, large tumor size, present lymph node metastasis, and distant metastasis. There was no significant correlation between HOXD-AS1 expression and disease-free survival or overall survival in this cohort from the TCGA database. The study in vitro suggested reduced HOXD-AS1 expression inhibited papillary thyroid cancer cell proliferation, migration, and invasion, and promoted cell-cycle arrest. In conclusion, HOXD-AS1 is a biomarker for predicting clinical progression in papillary thyroid cancer.
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