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Updated: Dec 27, 2025

A Reporter Assay to Analyze Intronic microRNA Maturation in Mammalian Cells
Published on: June 16, 2022
Long noncoding RNA HOXA-AS2 acts as an oncogene by targeting miR-145-3p in human non-small cell lung cancer
1Department of Cardiothoracic Surgery, Yantai Mountain Hospital, Yantai, China. 296233234@qq.com.
Objective:
Recent studies have proved that long non-coding RNAs (lncRNAs) play important roles in many diseases, especially malignancies. The aim of this study was to investigate the exact role of lncRNA HOXA-AS2 (Hoxa cluster antisense RNA 2) in the development of non-small cell lung cancer (NSCLC).
Patients And Methods:
Quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) was utilized to detect HOXA-AS2 expression in NSCLC patients. The Wound healing assay and transwell assay were conducted to explore the function of HOXA-AS2 on NSCLC metastasis. Furthermore, the mechanism assays were used to explore the interaction between HOXA-AS2 and microRNA-145-3p (miR-145-3p).
Results:
HOXA-AS2 expression level in NSCLC tissues was significantly higher than adjacent tissues. HOXA-AS2 expression was negatively correlated with disease-free survival of NSCLC patients. Moreover, the functional assays showed that the migration and invasion of NSCLC cells were significantly inhibited after HOXA-AS2 in vitro silence. Furthermore, the luciferase reporter gene assay also revealed that miR-145-3p was a direct target of HOXA-AS2 in NSCLC.
Conclusions:
Our results indicated that HOXA-AS2 could enhance the migration and invasion abilities of NSCLC by targeting miR-145-3p. Furthermore, these findings suggested that HOXA-AS2 might be a potential therapeutic target for NSCLC.
Insights
Long non-coding RNA HOXA-AS2 (Hoxa cluster antisense RNA 2) promotes non-small cell lung cancer (NSCLC) metastasis by targeting microRNA-145-3p (miR-145-3p), suggesting HOXA-AS2 as a potential therapeutic target for NSCLC.
Area of Science:
- Molecular Biology
- Oncology
- RNA Biology
Background:
- Long non-coding RNAs (lncRNAs) are implicated in various diseases, including cancers.
- The specific role of lncRNA HOXA-AS2 in non-small cell lung cancer (NSCLC) development requires further elucidation.
Purpose of the Study:
- To investigate the role of lncRNA HOXA-AS2 in the development of NSCLC.
- To explore the underlying molecular mechanism involving microRNA-145-3p (miR-145-3p).
Main Methods:
- Quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) for HOXA-AS2 expression analysis.
- In vitro assays (Wound healing, Transwell) to assess NSCLC cell migration and invasion.
- Luciferase reporter gene assay to confirm the interaction between HOXA-AS2 and miR-145-3p.
Main Results:
- HOXA-AS2 expression was significantly upregulated in NSCLC tissues compared to adjacent tissues.
- High HOXA-AS2 expression correlated with reduced disease-free survival in NSCLC patients.
- Silencing HOXA-AS2 inhibited NSCLC cell migration and invasion in vitro.
- HOXA-AS2 directly targets miR-145-3p in NSCLC.
Conclusions:
- HOXA-AS2 promotes NSCLC cell migration and invasion by targeting miR-145-3p.
- HOXA-AS2 represents a potential therapeutic target for NSCLC treatment.
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