Hsa_circ_0001073 targets miR-626/LIFR axis to inhibit lung cancer progression

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Circular RNAs (circRNAs) are implicated in cancer progression, but the specific role of hsa_circ_0001073 (circ_0001073) in lung cancer remains largely unexplored.
• Understanding the molecular mechanisms of circRNAs in lung cancer is crucial for developing novel therapeutic strategies.

Purpose of the Study:

• To investigate the role and mechanism of circ_0001073 in the progression of lung cancer.
• To elucidate the regulatory relationship between circ_0001073, microRNA-626 (miR-626), and leukemia inhibitory factor receptor (LIFR) in lung cancer cells.

Main Methods:

• Quantitative reverse transcription polymerase chain reaction and western blot were used to measure the expression levels of circ_0001073, miR-626, and LIFR.
• Cell counting kit-8, transwell assays, and flow cytometry were employed to assess cell viability, invasion, and apoptosis.
• Dual-luciferase reporter assays and RNA immunoprecipitation were utilized to confirm the targeting interactions between circ_0001073, miR-626, and LIFR.

Main Results:

• Circ_0001073 expression was found to be significantly downregulated in lung cancer cells.
• Circ_0001073 overexpression inhibited cell viability and invasion while promoting apoptosis in lung cancer cells.
• Circ_0001073 directly targeted and inhibited miR-626, which in turn targeted LIFR, leading to increased LIFR expression. Circ_0001073 ultimately increased LIFR expression by sponging miR-626.

Conclusions:

• Circ_0001073 acts as a tumor suppressor in lung cancer by inhibiting cell viability and invasion and promoting apoptosis.
• The tumor-suppressive function of circ_0001073 is mediated through the miR-626/LIFR axis.
• Circ_0001073 holds potential as a therapeutic target for lung cancer treatment.