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LncRNA nuclear-enriched abundant transcript 1 regulates hypoxia-evoked apoptosis and autophagy via mediation of microRNA-181b

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Abstract

Nuclear-enriched abundant transcript 1 (NEAT1), a vital long noncoding RNA (lncRNA), exhibits the functions in disparate cancers. Nevertheless, the influences of NEAT1 in congenital heart disease (CHD) remain unreported. The research delves into whether NEAT1 affects H9c2 cells apoptosis and autophagy under the hypoxia condition. Overexpressed NEAT1 vector was transfected into H9c2 cells; then, functions of NEAT1 in cell viability, apoptosis, autophagy, PI3K/AKT/mTOR and JAK1/STAT3 pathways were detected in H9c2 cells under hypoxia condition. Expression of NEAT1 and miR-181b in hypoxia and blood samples from CHD was evaluated. After miR-181b inhibitor transfection, functions of miR-181b repression in the above-mentioned cell behavior and PI3K/AKT/mTOR and JAK1/STAT3 pathways were reassessed. Overexpressed NEAT1 clearly allayed hypoxia-triggered H9c2 cells apoptosis and autophagy. The decreased NEAT1 and miR-181b were showcased in hypoxia and blood samples from CHD; meanwhile, elevated miR-181b evoked by overexpressed NEAT1 was observed in hypoxia-managed H9c2 cells. More importantly, miR-181b inhibition obviously overturned the influences of NEAT1 in hypoxia-affected H9c2 cells apoptosis and autophagy. Besides, overexpressed NEAT1 facilitated PI3K/AKT/mTOR and JAK1/STAT3 activations via enhancing miR-181b. The research exposed that NEAT1 eased hypoxia-triggered H9c2 cells apoptosis and autophagy by expediting PI3K/AKT/mTOR and JAK1/STAT3 pathways via elevating miR-181b.

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The datasets used and/or analyzed during the current study are available from the corresponding author on a reasonable request.

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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, The First Hospital of Hebei Medical University, No. 89 Donggang Road, Shijiazhuang, 050031, Hebei, China

    Ying Lv, Jiancheng Huang, Jie Yu, Yanbo Dong & Jun Wang

  2. Department of Pediatric Surgery, Shijiazhuang Maternity & Child Healthcare Hospital, No. 9 Jianguo Road, Shijiazhuang, 050051, Hebei, China

    Zhaoming Liu

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  1. Ying Lv
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  3. Jiancheng Huang
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JW conceived and designed the experiments; YL, ZL, JH, JY and YD performed the experiments and analyzed the data; and YL and JW wrote the manuscript.

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Correspondence to Jun Wang.

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Lv, Y., Liu, Z., Huang, J. et al. LncRNA nuclear-enriched abundant transcript 1 regulates hypoxia-evoked apoptosis and autophagy via mediation of microRNA-181b. Mol Cell Biochem 464, 193–203 (2020). https://doi.org/10.1007/s11010-019-03660-2

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