Abstract
Hyaluronan synthase 2 (HAS2)-AS1 (natural antisense transcript of HAS2) functions as oncogenic long noncoding RNA (lncRNA) in oral squamous cell carcinoma, breast cancer, and osteosarcoma. The role of HAS2-AS1 in glioma remains unknown. In our research, HAS2-AS1 expression was elevated in glioma tissues compared with normal brain tissues. Moreover, high levels of HAS2-AS1 expression was observed in patients with glioma with high WHO grade (III-IV) or large tumor size ( > 4 cm). The survival analysis from The Cancer Genome Atlas showed glioma cases with high HAS2-AS1 expression that had shorter disease-free survival time and overall survival time than those with low HAS2-AS1 expression. In vitro studies suggested that knocking down HAS2-AS1 expression inhibited glioma cell viability, migration, and invasion through phosphoinositide 3-kinase/protein kinase B signaling pathway. In conclusion, HAS2-AS1 may be considered as a predictor for clinical outcome and a potential therapeutic target in glioma.
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