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      CircERCC2 ameliorated intervertebral disc degeneration by regulating mitophagy and apoptosis through miR-182-5p/SIRT1 axis

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          Abstract

          The molecular mechanism of intervertebral disc degeneration (IVDD) remains unclear. This study aimed to investigate the role of circular RNAs (circRNAs) in the pathogenesis of IVDD. We sued nucleus pulposus (NP) tissues of patients, tert-butyl hydroperoxide (TBHP) stimulated NP cells (NPCs), and IVDD rat model to explore the interaction between circERCC2 and miR-182-5p/SIRT1 axis. The results showed that downregulation of circERCC2 increased the level of miR-182-5p and decreased the level of SIRT1 in degenerative NP tissues in vivo as well as in TBHP-stimulated NPCs in vitro. Treatment of SIRT1-si activated apoptosis and inhibited mitophagy. Moreover, miR-182-5p-si could regulate the mitophagy and the apoptosis of NPCs by targeting SIRT1. The effects of circERCC2 on NPCs and IVDD rat model were mediated by miR-182-5p/SIRT1 axis. In conclusion, this study provides the first evidence that circERCC2 could ameliorate IVDD through miR-182-5p/SIRT1 axis by activating mitophagy and inhibiting apoptosis, and suggests that circERCC2 is a potentially effective therapeutic target for IVDD.

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          Most cited references43

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          miRWalk: An online resource for prediction of microRNA binding sites

          miRWalk is an open-source platform providing an intuitive interface that generates predicted and validated miRNA-binding sites of known genes of human, mouse, rat, dog and cow. The core of miRWalk is the miRNA target site prediction with the random-forest-based approach software TarPmiR searching the complete transcript sequence including the 5’-UTR, CDS and 3’-UTR. Moreover, it integrates results other databases with predicted and validated miRNA-target interactions. The focus is set on a modular design and extensibility as well as a fast update cycle. The database is available using Python, MySQL and HTML/Javascript Database URL: http://mirwalk.umm.uni-heidelberg.de.
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            Low back pain in relation to lumbar disc degeneration.

            Cross-sectional magnetic resonance imaging (MRI) study. To study the relation of low back pain (LBP) to disc degeneration in the lumbar spine. Controversy still prevails about the relationship between disc degeneration and LBP. Classification of disc degeneration and symptoms varies, hampering comparison of study results. Subjects comprised 164 men aged 40-45 years-53 machine drivers, 51 construction carpenters, and 60 office workers. The data of different types of LBP, individual characteristics, and lifestyle factors were obtained from a questionnaire and a structured interview. Degeneration of discs L2/L3-L5/S1 (dark nucleus pulposus and posterior and anterior bulge) was assessed with MRI. An increased risk of LBP (including all types) was found in relation to all signs of disc degeneration. An increased risk of sciatic pain was found in relation to posterior bulges, but local LBP was not related to disc degeneration. The risks of LBP and sciatic pain were strongly affected by occupation. Low back pain is associated with signs of disc degeneration and sciatic pain with posterior disc bulges. Low back pain is strongly associated with occupation.
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              Prediction of functional microRNA targets by integrative modeling of microRNA binding and target expression data

              We perform a large-scale RNA sequencing study to experimentally identify genes that are downregulated by 25 miRNAs. This RNA-seq dataset is combined with public miRNA target binding data to systematically identify miRNA targeting features that are characteristic of both miRNA binding and target downregulation. By integrating these common features in a machine learning framework, we develop and validate an improved computational model for genome-wide miRNA target prediction. All prediction data can be accessed at miRDB (http://mirdb.org). Electronic supplementary material The online version of this article (10.1186/s13059-019-1629-z) contains supplementary material, which is available to authorized users.
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                Author and article information

                Contributors
                shrrng0@gmail.com
                18111220066@fudan.edu.cn
                Journal
                Cell Death Dis
                Cell Death Dis
                Cell Death & Disease
                Nature Publishing Group UK (London )
                2041-4889
                3 October 2019
                3 October 2019
                October 2019
                : 10
                : 10
                : 751
                Affiliations
                [1 ]ISNI 0000 0001 0125 2443, GRID grid.8547.e, Department of Orthopedics, Huashan Hospital, , Fudan University, ; 12 Mid-Wulumuqi Road, Shanghai, 200040 China
                [2 ]ISNI 0000 0004 0368 7223, GRID grid.33199.31, Department of Orthopedic Surgery, Wuhan Fourth Hospital, , Huazhong University of Science and Technology, ; 473 Hanzheng Street, Wuhan, 430000 China
                [3 ]ISNI 0000 0000 9868 173X, GRID grid.412787.f, Department of Spinal Surgery, Wuhan Puren Hospital, , Wuhan University of Science and Technology, ; 1 Benxi Street, Wuhan, 430080 China
                [4 ]ISNI 0000 0001 2323 5732, GRID grid.39436.3b, Laboratory of Neuropharmacology and Neurotoxicology, , Shanghai University, ; 381 Nanchen Road, Shanghai, 200436 China
                [5 ]ISNI 0000 0001 0125 2443, GRID grid.8547.e, Department of Orthopedic Surgery, Jinshan Hospital, , Fudan University, ; 1508 Longhang Road, Shanghai, 201508 China
                [6 ]ISNI 0000 0001 0125 2443, GRID grid.8547.e, Department of Orthopedic Surgery, The Fifth People’s Hospital of Shanghai, , Fudan University, ; 128 Ruili Road, Shanghai, 201100 China
                Article
                1978
                10.1038/s41419-019-1978-2
                6776655
                31582722
                befd6b23-2c41-40cd-9822-cbd104165c7a
                © The Author(s) 2019

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 17 July 2019
                : 4 September 2019
                : 16 September 2019
                Funding
                Funded by: FundRef https://doi.org/10.13039/501100001809, National Natural Science Foundation of China (National Science Foundation of China);
                Award ID: 81802145
                Award ID: 81772388
                Award ID: 81772388
                Award ID: 81802145
                Award ID: 81802145
                Award ID: 81772388
                Award Recipient :
                Categories
                Article
                Custom metadata
                © The Author(s) 2019

                Cell biology
                mitophagy,mirnas,rnai
                Cell biology
                mitophagy, mirnas, rnai

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