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10 August 2020 : Laboratory Research  

Silencing of Long Non-Coding RNA (lncRNA) Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) Protects PC-12 Cells from LPS-Induced Injury via Targeting miR-29a

Yunchao Ban1ABCD, Cui Cui2AE*

DOI: 10.12659/MSM.923914

Med Sci Monit 2020; 26:e923914

Abstract

BACKGROUND: Spinal cord injury (SCI) is a debilitating neuropathological condition that significantly affects the quality of life. The present study is basic research examining the underlying mechanisms of NEAT1 and miR-29a in regulating LPS-induced PC-12 cell injury.

MATERIAL AND METHODS: The model of cell injury was induced by the treatment of PC-12 cells with LPS. The expressions of NEAT1, miR-29a, and inflammatory cytokines were measured by real-time quantitative polymerase chain reactions (RT-qPCR). Cell proliferation and apoptosis were evaluated by CCK-8 and flow cytometry, respectively. Finally, the target between miR-29a and NEAT1 as well as miR-29a and BCL2L11 was investigated by luciferase and RNA pull-down assays.

RESULTS: Knockdown of NEAT1 can inhibit inflammatory cytokine expression and PC-12 cell apoptosis and promote PC-12 cell proliferation by targeting miR-29a. However, the variation caused by NEAT1 knockdown can be reversed by the silencing of miR-29a and the overexpression of BCL2L11, which is the direct target gene of miR-29a.

CONCLUSIONS: High NEAT1 levels can increase LPS-induced injury in PC-12 cells through the miR-29a/BCL2L11 pathway. lncRNA NEAT1 may, therefore, be a promising target for SCI treatment.

Keywords: bcl-X Protein, Spinal Cord Injuries

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Med Sci Monit 2021; 27:e935624

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750