LINC00472 suppresses non-small cell lung cancer progression via regulating miR-23a-3p/CCL22 axis

Area of Science:

• Oncology
• Molecular Biology
• Gene Regulation

Background:

• Long non-coding RNA (lncRNA) LINC00472 is implicated in tumor development.
• Non-small cell lung cancer (NSCLC) is a major global health concern.
• Understanding the molecular mechanisms underlying NSCLC progression is crucial for developing effective therapies.

Purpose of the Study:

• To investigate the role of LINC00472 in NSCLC cell biological functions.
• To elucidate the potential molecular mechanisms of LINC00472 in NSCLC.
• To explore the interaction between LINC00472, miR-23a-3p, and CCL22 in NSCLC.

Main Methods:

• Quantitative real-time PCR (RT-qPCR) to determine mRNA levels of LINC00472, miR-23a-3p, and CCL22.
• Cell Counting Kit-8, cell scratch assays, and Western blot to assess cell proliferation, migration, and apoptosis.
• Luciferase reporter assay to validate direct binding interactions.

Main Results:

• LINC00472 and CCL22 were found to be downregulated in NSCLC tissues and cells, while miR-23a-3p was upregulated.
• Overexpression of LINC00472 suppressed NSCLC cell proliferation and migration while promoting apoptosis.
• LINC00472 increased CCL22 expression by sponging miR-23a-3p, and this effect was reversed by miR-23a-3p mimics.
• Knockdown of CCL22 counteracted the inhibitory effects of LINC00472 on NSCLC cell survival.

Conclusions:

• LINC00472 functions as a tumor suppressor in NSCLC.
• LINC00472 exerts its tumor-suppressive effects by upregulating CCL22 expression through the sponging of miR-23a-3p.
• Targeting the LINC00472/miR-23a-3p/CCL22 axis may represent a potential therapeutic strategy for NSCLC.