Non-coding RNAs PROX1-AS1 and miR-647: Potential Interaction and Prognostic Value in Gastric Cancer

Area of Science:

• Oncology
• Molecular Biology
• Biochemistry

Background:

• Gastric cancer (GC) is a leading cause of cancer mortality globally.
• Non-coding RNAs (ncRNAs), including microRNAs and long ncRNAs, play roles in GC pathogenesis and progression.
• ncRNAs are potential diagnostic and prognostic biomarkers for GC.

Purpose of the Study:

• To assess the expression of PROX1-AS1 (Prospero Homeobox 1 Antisense RNA 1) and miR-647 (microRNA-647) in GC.
• To investigate the interaction between PROX1-AS1 and miR-647.
• To evaluate their clinical significance and prognostic value in GC.

Main Methods:

• Quantified PROX1-AS1 and miR-647 expression in 110 GC patient tissues and 65 plasma samples using real-time polymerase chain reaction (RT-PCR).
• Included 38 normal gastric tissue and 49 healthy plasma samples as controls.
• Analyzed correlations with clinical-pathological characteristics and conducted in vitro experiments to assess their interaction.

Main Results:

• PROX1-AS1 expression was significantly decreased, while miR-647 expression was increased in GC tissues compared to controls.
• A negative correlation was observed between PROX1-AS1 and miR-647 in both tumor and adjacent non-tumor tissues.
• Expression levels were associated with clinical-pathological characteristics, including primary tumor size.

Conclusions:

• A negative correlation exists between PROX1-AS1 and miR-647 in GC tissues and cell lines.
• These ncRNAs, particularly their association with tumor size, indicate potential prognostic value for GC.
• Further research into PROX1-AS1 and miR-647 could lead to novel GC biomarkers.