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Jia Y, Huo X, Wu L, Zhang H, Xu W, Leng H. circSNTB2 and CUL4A Induces Dysfunction of Nucleus Pulposus Cells by Competitively Binding miR-665. Biochem Genet 2024; 62:968-986. [PMID: 37507642 DOI: 10.1007/s10528-023-10465-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
Circular RNA (circRNA) plays important roles in lumbar degenerative diseases. This study aimed to investigate the role of circSNTB2 in regulating the development of lumbar disc herniation (LDH) in vitro and in vivo. The abnormally expressed circSNTB2 in intervertebral disc degeneration (IDD) through bioinformatics analysis was identified, and verified in nucleus pulposus (NP) tissues of patients with LDH. NP cells were treated with TNF-α to mimic the LDH microenvironment. RT-qPCR was applied to determine levels of mRNA and microRNA (miRNA) in clinical samples and cells. We performed CCK-8, EdU, TUNEL and flow cytometric apoptosis assays to evaluate the proliferation and apoptosis of NP cells. The predicted the miRNAs and downstream target genes were verified with the help of luciferase reporter gene and RNA pull-down experiments. Finally, we established an LDH rat model to further verify the role of circSNTB2 in vivo. circSNTB2 was significantly up-regulated in the NP tissues of LDH group and TNF-α -treated NP cells. miR-665 binds to circSNTB2 and cullin 4A (CUL4A) is the downstream target gene of miR-665. Knockdown of circSNTB2 promoted NP cells proliferation and inhibited apoptosis, which was reversed by down-regulation of miR-665. In addition, up-regulated CUL4A reversed the effects of over-expressed miR-665 on proliferation and apoptosis of NP cells. Meanwhile, results of in vivo experiments demonstrated that knocking down circSNTB2 alleviated LDH-induced thermo-mechanical pain and NP injury. In summary, circSNTB2 regulates the proliferation and apoptosis of NP by mediating miR-665 regulation of CUL4A, which provides a reliable idea for targeted therapy of LDH.
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Affiliation(s)
- Yiming Jia
- Department of Spine Surgery, Chifeng Municipal Hospital, Hongshan District, No. 1, Zhaowuda Road, Chifeng City, 024000, Inner Mongolia, China
| | - Xin Huo
- Department of Orthopaedics, Chifeng Second Hospital, Hongshan District, No.1, Changqing Street, Chifeng City, 024000, Inner Mongolia, China
| | - Leilei Wu
- Department of Spine Surgery, Chifeng Municipal Hospital, Hongshan District, No. 1, Zhaowuda Road, Chifeng City, 024000, Inner Mongolia, China
| | - Haibo Zhang
- Department of Spine Surgery, Chifeng Municipal Hospital, Hongshan District, No. 1, Zhaowuda Road, Chifeng City, 024000, Inner Mongolia, China
| | - Wenda Xu
- Department of Spine Surgery, Chifeng Municipal Hospital, Hongshan District, No. 1, Zhaowuda Road, Chifeng City, 024000, Inner Mongolia, China
| | - Hui Leng
- Department of Spine Surgery, Chifeng Municipal Hospital, Hongshan District, No. 1, Zhaowuda Road, Chifeng City, 024000, Inner Mongolia, China.
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Leite Pereira C, Grad S, Gonçalves RM. Biomarkers for intervertebral disc and associated back pain: From diagnosis to disease prognosis and personalized treatment. JOR Spine 2023; 6:e1280. [PMID: 38156062 PMCID: PMC10751979 DOI: 10.1002/jsp2.1280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/18/2023] [Accepted: 08/03/2023] [Indexed: 12/30/2023] Open
Abstract
Biomarkers are commonly recognized as objective indicators of a medical state or clinical outcome and have been widely used as clinical and diagnostic tools and surrogate endpoints in many pathological conditions. In the context of intervertebral disc (IVD) and associated back pain, also known as degenerative disc disease (DDD), the use of biomarkers has been poorly explored. DDD is currently diagnosed using imaging techniques and subjective pain scales, limiting an objective association between DDD and pain levels, as well as an evaluation of disease progression. There is a need for objective and reliable measurements for DDD, pain and pathology progression. DDD predictors could also help clinicians in deciding on the optimal treatment for distinct patient groups. This review addresses the current candidate biomarkers in DDD, including imaging, genetic, metabolite and protein-based parameters, both at the tissue and systemic levels, that may become a major advance in the diagnosis and prognosis of the disease, as well as in the management of therapeutic approaches to DDD.
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Affiliation(s)
- Catarina Leite Pereira
- I3S, Instituto de Investigação e Inovação em SaúdeUniversidade do PortoPortoPortugal
- INEB, Instituto de Engenharia BiomédicaUniversidade do PortoPortoPortugal
| | | | - Raquel M. Gonçalves
- I3S, Instituto de Investigação e Inovação em SaúdeUniversidade do PortoPortoPortugal
- INEB, Instituto de Engenharia BiomédicaUniversidade do PortoPortoPortugal
- ICBAS, Instituto de Ciências Biomédicas Abel SalazarUniversidade do PortoPortoPortugal
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3
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Shnayder NA, Ashhotov AV, Trefilova VV, Novitsky MA, Medvedev GV, Petrova MM, Narodova EA, Kaskaeva DS, Chumakova GA, Garganeeva NP, Lareva NV, Al-Zamil M, Asadullin AR, Nasyrova RF. High-Tech Methods of Cytokine Imbalance Correction in Intervertebral Disc Degeneration. Int J Mol Sci 2023; 24:13333. [PMID: 37686139 PMCID: PMC10487844 DOI: 10.3390/ijms241713333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
An important mechanism for the development of intervertebral disc degeneration (IDD) is an imbalance between anti-inflammatory and pro-inflammatory cytokines. Therapeutic and non-therapeutic approaches for cytokine imbalance correction in IDD either do not give the expected result, or give a short period of time. This explains the relevance of high-tech medical care, which is part of specialized care and includes the use of new resource-intensive methods of treatment with proven effectiveness. The aim of the review is to update knowledge about new high-tech methods based on cytokine imbalance correction in IDD. It demonstrates promise of new approaches to IDD management in patients resistant to previously used therapies, including: cell therapy (stem cell implantation, implantation of autologous cultured cells, and tissue engineering); genetic technologies (gene modifications, microRNA, and molecular inducers of IDD); technologies for influencing the inflammatory cascade in intervertebral discs mediated by abnormal activation of inflammasomes; senolytics; exosomal therapy; and other factors (hypoxia-induced factors; lysyl oxidase; corticostatin; etc.).
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Affiliation(s)
- Natalia A. Shnayder
- Institute of Personalized Psychiatry and Neurology, Shared Core Facilities, V.M. Bekhterev National Medical Research Centre for Psychiatry and Neurology, 192019 Saint Petersburg, Russia; (A.V.A.); (V.V.T.)
- Shared Core Facilities “Molecular and Cell Technologies”, V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.N.); (D.S.K.)
| | - Azamat V. Ashhotov
- Institute of Personalized Psychiatry and Neurology, Shared Core Facilities, V.M. Bekhterev National Medical Research Centre for Psychiatry and Neurology, 192019 Saint Petersburg, Russia; (A.V.A.); (V.V.T.)
| | - Vera V. Trefilova
- Institute of Personalized Psychiatry and Neurology, Shared Core Facilities, V.M. Bekhterev National Medical Research Centre for Psychiatry and Neurology, 192019 Saint Petersburg, Russia; (A.V.A.); (V.V.T.)
- Department of Neurology, Hospital for War Veterans, 193079 Saint Petersburg, Russia;
| | - Maxim A. Novitsky
- Department of Neurology, Hospital for War Veterans, 193079 Saint Petersburg, Russia;
| | - German V. Medvedev
- R.R. Vreden National Medical Research Center for Traumatology and Orthopedics, 195427 Saint-Petersburg, Russia;
| | - Marina M. Petrova
- Shared Core Facilities “Molecular and Cell Technologies”, V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.N.); (D.S.K.)
| | - Ekaterina A. Narodova
- Shared Core Facilities “Molecular and Cell Technologies”, V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.N.); (D.S.K.)
| | - Daria S. Kaskaeva
- Shared Core Facilities “Molecular and Cell Technologies”, V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia; (M.M.P.); (E.A.N.); (D.S.K.)
| | - Galina A. Chumakova
- Department of Therapy and General Medical Practice with a Course of Postgraduate Professional Education, Altai State Medical University, 656038 Barnaul, Russia;
| | - Natalia P. Garganeeva
- Department of General Medical Practice and Outpatient Therapy, Siberian State Medical University, 634050 Tomsk, Russia;
| | - Natalia V. Lareva
- Department of Therapy of Faculty of Postgraduate Education, Chita State Medical Academy, 672000 Chita, Russia;
| | - Mustafa Al-Zamil
- Department of Physiotherapy, Faculty of Continuing Medical Education, Peoples’ Friendship University of Russia, 117198 Moscow, Russia;
| | - Azat R. Asadullin
- Department of Psychiatry and Addiction, Bashkir State Medical University, 450008 Ufa, Russia;
| | - Regina F. Nasyrova
- Institute of Personalized Psychiatry and Neurology, Shared Core Facilities, V.M. Bekhterev National Medical Research Centre for Psychiatry and Neurology, 192019 Saint Petersburg, Russia; (A.V.A.); (V.V.T.)
- International Centre for Education and Research in Neuropsychiatry, Samara State Medical University, 443016 Samara, Russia
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Yuan L, Miao H, Ding H, Zhang F, Lou ZK, Li XG. Polyphyllin I suppressed the apoptosis of intervertebral disc nucleus pulposus cells induced by IL-1β by miR-503-5p/Bcl-2 axis. J Orthop Surg Res 2023; 18:466. [PMID: 37380996 DOI: 10.1186/s13018-023-03947-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/22/2023] [Indexed: 06/30/2023] Open
Abstract
BACKGROUND There are no studies that have shown the role and underlying mechanism of Polyphyllin I (PPI)-mediated anti-apoptosis activity in nucleus pulposus cells (NPCs). The research aimed to evaluate the effects of PPI in interleukin (IL)-1β-induced NPCs apoptosis in vitro. METHODS Cell Counting Kit-8 (CCK-8) assay was used to detect cell viability, and cell apoptosis was evaluated by double-stained flow cytometry (FITC Annexin V/PI). The expression of miR-503-5p was quantified by real-time quantitative PCR (qRT-PCR), and the expression of Bcl-2, Bax, and cleaved caspase-3 was quantified by Western blot. Dual-luciferase reporter gene assay was used to detect the targeting relationship between miR-503-5p and Bcl-2. RESULTS PPI at 40 μg·mL-1 markedly promoted the viability of NPCs (P < 0.01). Also, PPI inhibited apoptosis and reduction in proliferative activity induced by IL-1β in the NPCs (P < 0.001, 0.01). PPI treatment significantly inhibited the expression of apoptosis-related protein Bax, cleaved caspase-3 (P < 0.05, 0.01), and enhanced the level of anti-apoptotic protein Bcl-2 (P < 0.01). The proliferative activity of NPCs was significantly decreased and the apoptosis rate of NPCs was increased under IL-1β treatment (P < 0.01, 0.001). Moreover, miR-503-5p was highly expressed in IL-1β-induced NPCs (P < 0.001). Furthermore, the effect of PPI on NPCs viability and apoptosis in IL-1β treatment was dramatically reversed by the overexpression of miR-503-5p (P < 0.01, 0.01). The targeted binding of miR-503-5p to the 3'UTR of Bcl-2 mRNA was confirmed by dual-luciferase reporter gene assays (P < 0.05). In further experiments, compared with miR-503-5p mimics, the effects of PPI on IL-1β-induced NPCs viability and apoptosis were greatly reversed by the co-overexpression of miR-503-5p and Bcl-2 (P < 0.05, 0.05). CONCLUSION PPI suppressed the apoptosis of intervertebral disk (IVD) NPCs induced by IL-1β via miR-503-5p/Bcl-2 molecular axis.
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Affiliation(s)
- Lei Yuan
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, Kunming City, 650031, Yunnan Province, China
| | - Hui Miao
- Rehabilitation Department, Yantai Yuhuangding Hospital, Yantai, 264001, Shandong, China
| | - Heng Ding
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, Kunming City, 650031, Yunnan Province, China
| | - Fan Zhang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, Kunming City, 650031, Yunnan Province, China
| | - Zhen-Kai Lou
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, Kunming City, 650031, Yunnan Province, China
| | - Xing-Guo Li
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, Kunming City, 650031, Yunnan Province, China.
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Chen S, Zhuang Q, Li P, Zeng J, Peng Y, Ding Z, Cao H, Zheng R, Wang W. The long non-coding RNA KLF3-AS1/miR-10a-3p/ZBTB20 axis improves the degenerative changes in human nucleus pulposus cells. Cell Tissue Res 2023:10.1007/s00441-023-03751-z. [PMID: 37052702 DOI: 10.1007/s00441-023-03751-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 01/26/2023] [Indexed: 04/14/2023]
Abstract
Excessive apoptosis of intervertebral disc cells, namely nucleus pulposus (NP) cells, results in decreased cell density and extracellular matrix (ECM) catabolism, hence leading to intervertebral disc degeneration (IVDD). As a cell model in the present study, a commercially available human NP cell line was utilized. Long noncoding RNAs and microRNAs may regulate the proliferation or apoptosis of human NP cells, hence exerting a significant influence on the occurrence of IVDD. KLF3-AS1 was discovered to be abnormally downregulated in IVDD tissues. Overexpression of KLF3-AS1 enhanced NP cell viability, prevented cell apoptosis, boosted ECM synthesis, and lowered MMP-13 and ADAMTS4 levels. ZBTB20 and KLF3-AS1 were co-expressed in IVDD; ZBTB20 overexpression had similar effects on NP cells, ECM production, and MMP-13 and ADAMTS4 levels as KLF3-AS1 overexpression. miR-10a-3p may target KLF3-AS1 and ZBTB20 and inhibit the expression of ZBTB20. Inhibition of miR-10a-3p enhanced NP cell viability, reduced apoptosis, and enhanced ECM synthesis. KLF3-AS1 overexpression increased ZBTB20 expression, whereas miR-10a-3p overexpression decreased ZBTB20 expression; miR-10a-3p overexpression reduced the effects of KLF3-AS1 on ZBTB20. Overexpression of miR-10a-3p consistently decreased the effects of KLF3-AS1 overexpression on NP cell survival, apoptosis, and ECM synthesis. In conclusion, KLF3-AS1 overexpression may ameliorate degenerative NP cell alterations through the miR-10a-3p/ZBTB20 axis.
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Affiliation(s)
- Shijie Chen
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Quan Zhuang
- Transplantation Center, the Third Xiangya Hospital of Central South University, Hunan, 410013, China
| | - Pinghuang Li
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China
| | - Jin Zeng
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China
| | - Yi Peng
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China
| | - Zhiyu Ding
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China
| | - Hongqing Cao
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China
| | - Ruping Zheng
- School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
| | - Weiguo Wang
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, Hunan, 410013, China.
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Shi X, Tian S, Tian Y. Experimental study of miR-503 regulating the activity as well as the function of degenerated human nucleus pulposus cells of the intervertebral disc through inhibiting Wnt pathway. JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS 2023; 23:131-144. [PMID: 36856108 PMCID: PMC9976174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
OBJECTIVES To preliminarily explore miR-503 in human degenerative disc nucleus pulposus cell effects as well as mechanisms. METHODS We utilized bioinformatics analysis to determine the miRNA differential expression as well as key signal pathways existing in human nucleus pulposus cells of the degenerative intervertebral discs. Human degenerative disc nucleus pulposus cell model was cultured and established in vitro. miR-503 and TNIK-related genes are knocked down and overexpressed by lentiviral infection, then we added Wnt signaling pathway agonists; CCK-8, ELISA, RT-PCR, Western blot were used to detect proliferation, apoptosis, and activity of cells. RESULTS Bioinformatics results demonstrated that miR-503 was significantly down-regulated in human nucleus pulposus cells of the degenerated intervertebral discs. The targeted differentially expressed genes were mainly enriched in Wnt signaling pathway. However, after screening differential genes in the Wnt pathway, it was demonstrated that miR-503 mainly regulates TNIK to achieve Wnt pathway regulation. Cell experiments in vitro showed that cell activity and function were decreased while apoptosis was increased in the degenerative cell model. CONCLUSIONS miR-503 can improve the function and activity of human nucleus pulposus cells of degenerated intervertebral disc by inhibiting Wnt expression. miR-503 mainly regulates the Wnt pathway through targeted binding with TNIK.
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Affiliation(s)
- Xiaoming Shi
- Orthopedics First ward, The First Hospital of Qiqihar, Affiliated Qiqihar Hospital of Southern Medical University, P.R. China
| | - Shaohua Tian
- Orthopedics Second ward, The Third Affiliated Hospital of Qiqihar Medical College, P.R. China
| | - Yinan Tian
- Neurology Second ward, The Third Affiliated Hospital of Qiqihar Medical College, P.R. China
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7
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Supra R, Agrawal DK. Mechanobiology of MicroRNAs in Intervertebral Disk Degeneration. JOURNAL OF SPINE RESEARCH AND SURGERY 2023; 5:1-9. [PMID: 36777190 PMCID: PMC9912327 DOI: 10.26502/fjsrs0051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Intervertebral disk degeneration (IDD) is an intricate pathological process contributing to one of the major causes of low back pain. The degradation of the extracellular matrix (ECM), inflammation, and apoptosis have all been investigated as critical factors involved in the pathology of degenerative disk disease. Additionally, the presence of aberrant microRNAs (miRNAs), conserved molecules that regulate the amount protein post-transcriptionally, may play a crucial role in the pathogenesis of IDD. Research regarding the dysfunction of miRNAs in IDD has been well researched over the past five years. Here, we provide a critical overview of the current knowledge of miRNAs, emphasizing the processes involved in the degenerative disk pathology.
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Affiliation(s)
- Rajiv Supra
- College of Osteopathic Medicine, Touro University, Henderson, Nevada
| | - Devendra K Agrawal
- Department of Translational Research, College of Osteopathic Medicine of the Pacific, Pomona, California
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Gao D, Hu B, Ding B, Zhao Q, Zhang Y, Xiao L. N6-Methyladenosine-induced miR-143-3p promotes intervertebral disc degeneration by regulating SOX5. Bone 2022; 163:116503. [PMID: 35878746 DOI: 10.1016/j.bone.2022.116503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/18/2022] [Accepted: 07/19/2022] [Indexed: 11/02/2022]
Abstract
Intervertebral disc degeneration is the basic cause of lumbocrural pain, which not only causes pain and but also serious economic burdens on patients. Increasingly more evidence has shown that tumor necrosis factor-α (TNF-α) is involved in the pathological process of intervertebral disc degeneration, but the specific molecular mechanism is still unclear. This study investigated the potential mechanism and function of methyltransferase-like 3 (METTL3)/miR-143-3p/SOX5 regulatory axis in nucleus pulposus cells under the action of TNF-α. Human nucleus pulposus cells were treated with TNF-α to construct an in vitro model of intervertebral disc degeneration. Flow cytometry, quantitative reverse-transcription PCR (RT-qPCR), Western blot (WB) and luciferase assays were used to identify the mechanism of action of miR-143-3p in the course of intervertebral disc degeneration in vitro and the downstream targeted regulatory molecules. The role of miR-143-3p in intervertebral disc degeneration was also validated by in vivo. RT-qPCR, WB, coimmunoprecipitation (Co-IP) and flow cytometry were used to verify the regulatory effect of METTL3 on miR-143-3p maturation. RT-qPCR and WB were adopted to detect differences in METTL3, miR-143-3p and SOX5 expression in human nucleus pulposus tissue. miR-143-3p in nucleus pulposus cells was involved in the regulation of extracellular matrix metabolism and apoptosis after TNF-α stimulation, and intervertebral disc degeneration was relieved by effectively regulating miR-143-3p expression. Subsequent experiments showed that the downstream direct target gene of miR-143-3p was SOX5 and that miR-143-3p negatively regulated the expression of SOX5. In addition, METTL3 promoted miR-143-3p maturation, and METTL3 and miR-143-3p were significantly upregulated in degenerative nucleus pulposus, an effect that was significantly negatively correlated with low SOX5 expression. In conclusion, TNF-α upregulates METTL3, METTL3 promotes miR-143-3p maturation, and miR-143-3p inhibits the transcriptional activity of SOX5 through targeted binding, thereby inducing intervertebral disc degeneration. The inhibition of METTL3 or miR-143-3p expression may be an effective way to treat intervertebral disc degeneration.
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Affiliation(s)
- Daokuan Gao
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, No. 2 Zheshan West Road, Wuhu 241001, Anhui, China
| | - Bo Hu
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, No. 2 Zheshan West Road, Wuhu 241001, Anhui, China
| | - Baiyang Ding
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, No. 2 Zheshan West Road, Wuhu 241001, Anhui, China
| | - Quanlai Zhao
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, No. 2 Zheshan West Road, Wuhu 241001, Anhui, China
| | - Yu Zhang
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, No. 2 Zheshan West Road, Wuhu 241001, Anhui, China
| | - Liang Xiao
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution, No. 2 Zheshan West Road, Wuhu 241001, Anhui, China.
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9
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Bahar ME, Hwang JS, Ahmed M, Lai TH, Pham TM, Elashkar O, Akter KM, Kim DH, Yang J, Kim DR. Targeting Autophagy for Developing New Therapeutic Strategy in Intervertebral Disc Degeneration. Antioxidants (Basel) 2022; 11:antiox11081571. [PMID: 36009290 PMCID: PMC9405341 DOI: 10.3390/antiox11081571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/11/2022] [Accepted: 08/11/2022] [Indexed: 12/25/2022] Open
Abstract
Intervertebral disc degeneration (IVDD) is a prevalent cause of low back pain. IVDD is characterized by abnormal expression of extracellular matrix components such as collagen and aggrecan. In addition, it results in dysfunctional growth, senescence, and death of intervertebral cells. The biological pathways involved in the development and progression of IVDD are not fully understood. Therefore, a better understanding of the molecular mechanisms underlying IVDD could aid in the development of strategies for prevention and treatment. Autophagy is a cellular process that removes damaged proteins and dysfunctional organelles, and its dysfunction is linked to a variety of diseases, including IVDD and osteoarthritis. In this review, we describe recent research findings on the role of autophagy in IVDD pathogenesis and highlight autophagy-targeting molecules which can be exploited to treat IVDD. Many studies exhibit that autophagy protects against and postpones disc degeneration. Further research is needed to determine whether autophagy is required for cell integrity in intervertebral discs and to establish autophagy as a viable therapeutic target for IVDD.
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Affiliation(s)
- Md Entaz Bahar
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Jin Seok Hwang
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Mahmoud Ahmed
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Trang Huyen Lai
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Trang Minh Pham
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Omar Elashkar
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Kazi-Marjahan Akter
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, GyeongNam, Korea
| | - Dong-Hee Kim
- Department of Orthopaedic Surgery, Institute of Health Sciences, Gyeongsang National University Hospital and Gyeongsang National University College of Medicine, Jinju 52727, GyeongNam, Korea
| | - Jinsung Yang
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
| | - Deok Ryong Kim
- Department of Biochemistry and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, GyeongNam, Korea
- Correspondence: ; Tel.: +82-55-772-8054
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10
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Wang C, Cui L, Gu Q, Guo S, Zhu B, Liu X, Li Y, Liu X, Wang D, Li S. The Mechanism and Function of miRNA in Intervertebral Disc Degeneration. Orthop Surg 2022; 14:463-471. [PMID: 35142050 PMCID: PMC8926997 DOI: 10.1111/os.13204] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 10/13/2021] [Accepted: 12/20/2021] [Indexed: 12/31/2022] Open
Abstract
Intervertebral disc degeneration (IDD) disease has been considered as the main cause of low back pain (LBP), which is a very common symptom and the leading cause of disability worldwide today. The pathological mechanism of IDD remains quite complicated, and genetic, developmental, biochemical, and biomechanical factors all contribute to the development of the disease. There exists no effective, non-surgical treatment for IDD nowadays, which is largely related to the lack of knowledge of the specific mechanisms of IDD, and the lack of effective specific targets. Recently, non-coding RNA, including miRNA, has been recognized as an important regulator of gene expression. Current studies on the effects of miRNA in IDD have confirmed that a variety of miRNAs play a crucial role in the process of IDD via nucleus pulposus cells (NPC) apoptosis, abnormal proliferation, inflammatory factors, the extracellular matrix (ECM) degradation, and annulus fibrosus (AF) degeneration. In the past 10 years, research on miRNA has been quite active in IDD. This review summarizes the current research progression of miRNA in the IDD and puts forward some prospects and challenges on non-surgical treatment for IDD.
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Affiliation(s)
- Chenglong Wang
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Liqiang Cui
- Department of Spine Surgery, Mianyang Orthopaedic Hospital, Mianyang, China
| | - Qinwen Gu
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Sheng Guo
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Bin Zhu
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Xueli Liu
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Yujie Li
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Xinyue Liu
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Dingxuan Wang
- Institute of Physical Education, Southwest Medical University, Luzhou, China
| | - Sen Li
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
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Che Z, Xueqin J, Zhang Z. LncRNA OIP5-AS1 accelerates intervertebral disc degeneration by targeting miR-25-3p. Bioengineered 2021; 12:11201-11212. [PMID: 34872452 PMCID: PMC8810189 DOI: 10.1080/21655979.2021.2007697] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
It is obvious that epigenetic processes influence the evolution of intervertebral disc degeneration (IDD). However, its molecular mechanisms are poorly understood. Long noncoding RNAs (lncRNAs) have been validated to exert vital roles in IDD. Therefore, we tested the hypothesis that OIP5-AS1, a potential regulator of IDD, modulates IDD progression. RT-PCR was utilized to detect levels of OIP5-AS1, miR-25-3p, Collagen II and Aggrecan in IDD tissues and nucleus pulposus cells (NPCs). Immunofluorescence assay measured Collagen II expression. CCK-8, EdU, and flow cytometry estimated the levels of proliferation and apoptosis. Proteins were assessed via Western blot. The binding affinity of OIP5-AS1 with miR-25-3p was investigated by luciferase reporter assay. Enzyme-linked immunosorbent assay (ELISA) analyzed the levels of inflammatory factors. OIP5-AS1 was high expressed in IDD tissues and its expression gradually promoted with the increasing of Pfirrmann scores. The cell morphology of NPCs changed into spindle-shaped, and Collagen II expression was low. After OIP5-AS1 was silenced, cell proliferation was boosted whereas both apoptosis and extracellular matrix (ECM) degradation were restrained. In LPS-activated NPCs, OIP5-AS1 depletion also suppressed inflammation response. Further, miR-25-3p was a target of OIP5-AS1. The effects of OIP5-AS1 silence on proliferation, apoptosis, and ECM degradation were reversed upon miR-25-3p downregulation. Moreover, the inhibitory impact of OIP5-AS1 knockdown on the inflammation of LPS-treated NPCs was rescued with miR-25-3p inference. In general, lncRNA OIP5-AS1 exerted its effects in IDD by targeting miR-25-3p, implying the usage of OIP5-AS1/miR-25-3p as a novel regulatory axis for the molecular targets of IDD therapy.
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Affiliation(s)
- Zhaoping Che
- Department of Operation, The Traditional Chinese Medical Hospital of Lianyungang, Lianyungang, Jiangsu Province, China
| | - Jie Xueqin
- Department of Operation, The Second People's Hospital of Lianyungang, Lianyungang Jiangsu Province, China
| | - Zongyu Zhang
- Department of Orthopaedics, The Traditional Chinese Medical Hospital of Lianyungang, Lianyungang Jiangsu Province, China
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Dong L, Dong B. miR-489-3p overexpression inhibits lipopolysaccharide-induced nucleus pulposus cell apoptosis, inflammation and extracellular matrix degradation via targeting Toll-like receptor 4. Exp Ther Med 2021; 22:1323. [PMID: 34630677 PMCID: PMC8495590 DOI: 10.3892/etm.2021.10758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 04/17/2020] [Indexed: 11/20/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is a common disease with a high morbidity rate, which results in a significant deterioration in the quality of life of patients. MicroRNAs (miRNAs/miRs) are a class of endogenous small non-coding RNAs that influence target genes and serve critical roles in numerous biological processes. However, the role of miR-489-3p in lumbar disc degeneration is yet to be elucidated. In the present study, human NP cells were treated with 10 ng/ml lipopolysaccharide (LPS) for 24 h to investigate the role of miR-489-3p in IDD in an in vitro model. Reverse transcription-quantitative (RT-q)PCR was performed to determine the expression levels of miR-489-3p. Then, the TargetScan database was used to predict the potential binding sites between miR-489-3p and Toll-like receptor (TLR)4, and a dual-luciferase reporter assay was performed to verify the findings. Subsequently, RT-qPCR and western blotting were used to analyze the expression levels of TLR4. In addition, human nucleus pulposus (NP) cells were transfected with a miR-489-3p mimic and TLR4 overexpression plasmid to study the effects of miR-489-3p on LPS-induced human NP cells. Cell apoptosis and cell viability were also determined using flow cytometry and MTT assays, respectively. Finally, ELISAs were performed to analyze the levels of inflammatory factors. The expression levels of miR-489-3p were discovered to be downregulated in LPS-treated human NP cells. In addition, TLR4 was revealed to be a direct target gene of miR-489-3p, and its expression levels were upregulated in LPS-treated human NP cells. miR-489-3p was found to inhibit the LPS-induced decreases in cell viability and increases in apoptosis, and the concentration of inflammatory cytokines. Furthermore, miR-489-3p suppressed the LPS-induced decreases in extracellular matrix deposition via decreasing the expression levels of aggrecan and collagen type II in human NP cells. Finally, the results revealed that miR-489-3p inhibited the LPS-induced activation of the NF-κB signaling pathway in human NP cells. Conversely, all of the effects of miR-489-3p on LPS-induced human NP cells were reversed by the TLR4 overexpression plasmid. These findings suggested that miR-489-3p may represent a novel therapeutic target for the treatment of IDD.
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Affiliation(s)
- Ling Dong
- Department of Rehabilitation Medicine, Guizhou Orthopedics Hospital, Guiyang, Guizhou 550000, P.R. China
| | - Bo Dong
- Pain Rehabilitation Department of TCM Orthopedic Center, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, P.R. China
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Guo Y, Wang X, Liu H, Wang B, Meng Y, Ding C. Preliminary construction of a regulatory network of miRNAs in the pathogenesis of nucleus pulposus degeneration - a review based on data mining. Am J Transl Res 2021; 13:9919-9931. [PMID: 34650673 PMCID: PMC8507033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
In this study, we attempted to further collate existing transcriptome sequencing (mRNA-Seq) data by applying data mining and screening intervertebral disc degeneration (IVDD)-related miRNAs. At the same time, combined with published articles, the miRNAs that have been screened out were further excluded, and only the miRNAs confirmed by the reported studies were retained and reviewed. We obtained 12 pro-IVDD miRNAs and ten anti-IVDD miRNAs using the above screening process, involving 33 literature sources. By reviewing and summarizing the above studies, we preliminarily constructed the regulatory network of miRNA in the pathogenesis of IVDD. This regulatory network comprises many gaps and potential miRNA interactions, and these points may be the breakthrough points for further IVDD-related research. This new review approach can also provide a reference for the mechanistic studies of other diseases.
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Affiliation(s)
- Yingjun Guo
- Department of Orthopedic Surgery, West China Hospital, Sichuan University Chengdu 610041, Sichuan, China
| | - Xiaofei Wang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University Chengdu 610041, Sichuan, China
| | - Hao Liu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University Chengdu 610041, Sichuan, China
| | - Beiyu Wang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University Chengdu 610041, Sichuan, China
| | - Yang Meng
- Department of Orthopedic Surgery, West China Hospital, Sichuan University Chengdu 610041, Sichuan, China
| | - Chen Ding
- Department of Orthopedic Surgery, West China Hospital, Sichuan University Chengdu 610041, Sichuan, China
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Xiao Q, Teng Y, Xu C, Pan W, Yang H, Zhao J, Zhou Q. Role of PI3K/AKT Signaling Pathway in Nucleus Pulposus Cells. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9941253. [PMID: 34307680 PMCID: PMC8270693 DOI: 10.1155/2021/9941253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/15/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To investigate the role of PI3K/AKT signaling pathway in nucleus pulposus (NP) cells. METHODS Nucleus pulposus (NP) cells were isolated from SD rat, and thereafter, passage three (P3) NP cells were divided into the following experimental groups: control, PI3K/AKT agonist IGF-1 (25 ng/ml, 50 ng/ml, and 100 ng/ml), and PI3K/AKT inhibitor LY294002 (5 μM, 10 μM, and 20 μM). Flow cytometry and BrdU cell proliferation assays were performed to assess apoptosis and the proliferation rate of NP cells. Western blot analysis was performed to examine the protein expression level of Col II, Col X, Aggrecan, and MMP13. RESULTS PI3K/AKT inhibitor LY294002 increased the rate of apoptosis in NP cells when compared to the control and decreased the proliferation rate when compared to control. Moreover, LY294002 decreased the protein expression level of Col-II and Aggrecan in NP cells. At the same time, LY294002 increased the protein expression level of MMP13 and Col-X in NP cells. Through activating PI3K/AKT, IGF-1 increased the proliferation rate when compared to control and decreased the rate of apoptosis when compared to control. Additionally, IGF-1 decreased the protein expression level of MMP13 and Col-X and increased Col-II and Aggrecan in NP cells. CONCLUSION The inhibition of PI3K/AKT signaling pathway accelerated the apoptosis of NP cells and facilitated the extracellular matrix degradation. However, the activation of PI3K/AKT pathway partly prevented the NP cell from apoptosis and promoted their proliferation. Meanwhile, its activation also delayed the loss of extracellular matrix.
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Affiliation(s)
- Quan Xiao
- Department of Orthopaedic Surgery, The Affiliated Lianshui People's Hospital of Kangda College of Nanjing Medical Universty, Lianshui, Jiangsu, China
| | - Yun Teng
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Changming Xu
- Department of Orthopaedic Surgery, The Affiliated Lianshui People's Hospital of Kangda College of Nanjing Medical Universty, Lianshui, Jiangsu, China
| | - Wei Pan
- Department of Orthopaedic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223002, China
| | - Hanshi Yang
- Department of Orthopaedic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223002, China
| | - Jiali Zhao
- Department of Orthopaedic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223002, China
| | - Quan Zhou
- Department of Orthopaedic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223002, China
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Yang F, Wang J, Chen Z, Yang Y, Zhang W, Guo S, Yang Q. Role of microRNAs in intervertebral disc degeneration (Review). Exp Ther Med 2021; 22:860. [PMID: 34178133 PMCID: PMC8220656 DOI: 10.3892/etm.2021.10292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 05/19/2021] [Indexed: 11/14/2022] Open
Abstract
The incidence of lower back pain caused by intervertebral disc degeneration (IDD) is gradually increasing. IDD not only affects the quality of life of the patients, but also poses a major socioeconomic burden. There is currently no optimal method for delaying or reversing IDD, mainly due to its unknown pathogenesis. MicroRNAs (miRNAs/miRs) participate in the development of a number of diseases, including IDD. Abnormal expression of miRNAs in the intervertebral disc is implicated in various pathological processes underlying the development of IDD, including nucleus pulposus (NP) cell (NPC) proliferation, NPC apoptosis, extracellular matrix remodeling, inflammation and cartilaginous endplate changes, among others. The focus of the present review was the advances in research on the involvement of miRNAs in the mechanism underlying IDD. Further research is expected to identify markers for early diagnosis of IDD and new targets for delaying or reversing IDD.
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Affiliation(s)
- Fengguang Yang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Jizu Wang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Zhixin Chen
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Yuping Yang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Wenhui Zhang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Shifang Guo
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Qingshan Yang
- Department of Orthopedics, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
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16
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Lan T, Zheng YC, Li ND, Chen XS, Shen Z, Yan B. CRISPR/dCas9-Mediated Parkin Inhibition Impairs Mitophagy and Aggravates Apoptosis of Rat Nucleus Pulposus Cells Under Oxidative Stress. Front Mol Biosci 2021; 8:674632. [PMID: 33937342 PMCID: PMC8082403 DOI: 10.3389/fmolb.2021.674632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 03/22/2021] [Indexed: 02/04/2023] Open
Abstract
Objective The aim of this study is to explore the role of Parkin in intervertebral disk degeneration (IDD) and its mitophagy regulation mechanism. Study design and methods Rat nucleus pulposus (NP) cells were stimulated with hydrogen peroxide (H2O2) to a mimic pathological condition. Apoptosis and mitophagy were assessed by Western blot, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay, and immunofluorescence staining. The CRISPR–dCas9–KRAB system was used to silence the expression of Parkin. Result In this study, we found that Parkin was downregulated in rat NP cells under oxidative stress. In addition, treatment with H2O2 resulted in mitochondrial dysfunction, autophagy inhibition, and a significant increase in the rate of apoptosis of NP cells. Meanwhile, mitophagy inhibition enhanced H2O2-induced apoptosis. Furthermore, repression of Parkin significantly attenuated mitophagy and exacerbated apoptosis. Conclusion These results suggested that Parkin may play a protective role in alleviating the apoptosis of NP cells via mitophagy, and that targeting Parkin may provide a promising therapeutic strategy for the prevention of IDD.
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Affiliation(s)
- Tao Lan
- Department of Spine Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Yu-Chen Zheng
- Department of Spine Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Ning-Dao Li
- Department of Orthopedic Surgery, Shenzhen Luohu People's Hospital, The Third Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Xiao-Sheng Chen
- Department of Spine Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Zhe Shen
- Department of Spine Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Bin Yan
- Department of Spine Surgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
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Zhou Y, Deng M, Su J, Zhang W, Liu D, Wang Z. The Role of miR-31-5p in the Development of Intervertebral Disc Degeneration and Its Therapeutic Potential. Front Cell Dev Biol 2021; 9:633974. [PMID: 33816484 PMCID: PMC8012912 DOI: 10.3389/fcell.2021.633974] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/17/2021] [Indexed: 01/08/2023] Open
Abstract
Intervertebral disc degeneration (IDD) refers to the abnormal response of cell-mediated progressive structural failure. In order to understand the molecular mechanism of the maintenance and destruction of the intervertebral disc, new IDD treatment methods are developed. Here, we first analyzed the key regulators of IDD through microRNAs microarrays. Then, the level of miR-31-5p was evaluated by qRT-PCR. The association between miR-31-5p and Stromal cell-derived factor 1 (SDF-1)/CXCR7 axis was assessed by 3′-untranslated region (UTR) cloning and luciferase assay. The apoptosis of cells under different treatments was evaluated by flow cytometer. The cell proliferation was assessed by EdU assay. After IDD model establishment, the discs of mice tail were harvested for histological and radiographic evaluation in each group. Finally, the protein levels of SDF-1, CXCR7, ADAMTS-5, Col II, Aggrecan, and MMP13 were assessed by western blot. The results show that miR-31-5p is a key regulator of IDD and its level is down-regulated in IDD. Overexpression of miR-31-5p facilitates nucleus pulposus cell proliferation, inhibits apoptosis, facilitates ECM formation, and inhibits the level of matrix degrading enzymes in NP cells. The SDF-1/CXCR7 axis is the direct target of miR-31-5p. miR-31-5p acts on IDD by regulating SDF-1/CXCR7. In vitro experiments further verified that the up-regulation of miR-31-5p prevented the development of IDD. In conclusion, overexpression of miR-31-5p can inhibit IDD by regulating SDF-1/CXCR7.
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Affiliation(s)
- Yong Zhou
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Mingsi Deng
- Department of Stomatology, Changsha Stomatological Hospital, Changsha, China
| | - Jiqing Su
- Department of Oncology, Changsha Central Hospital Affiliated to Nanhua University, Changsha, China
| | - Wei Zhang
- Institute of Clinical Pharmacology, Central South University, Changsha, China
| | - Dongbiao Liu
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zhengguang Wang
- Department of Orthopaedics, The Third Xiangya Hospital of Central South University, Changsha, China
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Tang J, Yu H, Wang Y, Duan G, Wang B, Li W, Zhu Z. miR-27a promotes osteogenic differentiation in glucocorticoid-treated human bone marrow mesenchymal stem cells by targeting PI3K. J Mol Histol 2021; 52:279-288. [PMID: 33532936 DOI: 10.1007/s10735-020-09947-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 12/18/2020] [Indexed: 01/20/2023]
Abstract
MicroRNA-27a (miR-27a) modulates osteogenic differentiation (OD); however, the mechanism by which it influences osteoclastic activity in the glucocorticoid (GC)-elicited osteoporotic bone is still unclear. Bone marrow was obtained from the proximal femur of patients (n = 3) with a femoral neck fracture and those (n = 3) with steroid-related osteonecrosis of the femoral head (ONFH). GC was applied to an established ONFH cell model from human bone marrow mesenchymal stem cells (hBMSCs). The miR-27a expression profiles were found to be downregulated in ONFH samples and GC-induced hBMSCs using microarray analysis and real-time quantitative polymerase chain reaction, whereas the OD capacity of hBMSCs was significantly reduced in the GC group compared with the control group. Subsequent transfection of an miR-27a mimic in hBMSCs revealed that the OD capacity of cells was remarkably strengthened in the GC group compared with the miR-control group. Bioinformatics software (TargetScan) predicted that phosphoinositide 3-kinase (PI3K) might be a potential miR-27a target, which was indicated by dual-luciferase reporter assay. Compared with the control group, the GC group exhibited a significantly downregulated protein expression level of PI3K and its downstream protein kinase B (Akt) and mammalian target of rapamycin (mTOR) expression. Furthermore, administration of 10 μM 740 Y-P, a cell-permeable phosphopeptide activator of PI3K, to hBMSCs increased the expression of Akt and mTOR. Treatment with 740 Y-P reversed the effect of miR-27a on OD in hBMSCs. In conclusion, miR-27a is thought to relieve ONFH and the OD repression in GC-induced hBMSCs by targeting the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Jinshan Tang
- Department of Orthopedics, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu, China
- Department of Orthopedics, The Second People's Hospital of Huai'an, Huai'an, Jiangsu, China
| | - Huaixi Yu
- Department of Orthopedics, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu, China
- Department of Orthopedics, The Second People's Hospital of Huai'an, Huai'an, Jiangsu, China
| | - Yunqing Wang
- Department of Orthopedics, The Second Affiliated Hospital of Xuzhou Medical University, No.32, Meijian Road, Xuzhou, 221006, Jiangsu, China
| | - Gang Duan
- Department of Orthopedics, The Second Affiliated Hospital of Xuzhou Medical University, No.32, Meijian Road, Xuzhou, 221006, Jiangsu, China
| | - Bin Wang
- Department of Orthopedics, The Second Affiliated Hospital of Xuzhou Medical University, No.32, Meijian Road, Xuzhou, 221006, Jiangsu, China
| | - Wenbo Li
- Department of Orthopedics, The Second Affiliated Hospital of Xuzhou Medical University, No.32, Meijian Road, Xuzhou, 221006, Jiangsu, China
| | - Ziqiang Zhu
- Department of Orthopedics, The Second Affiliated Hospital of Xuzhou Medical University, No.32, Meijian Road, Xuzhou, 221006, Jiangsu, China.
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Baumgartner L, Wuertz-Kozak K, Le Maitre CL, Wignall F, Richardson SM, Hoyland J, Ruiz Wills C, González Ballester MA, Neidlin M, Alexopoulos LG, Noailly J. Multiscale Regulation of the Intervertebral Disc: Achievements in Experimental, In Silico, and Regenerative Research. Int J Mol Sci 2021; 22:E703. [PMID: 33445782 PMCID: PMC7828304 DOI: 10.3390/ijms22020703] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 12/17/2022] Open
Abstract
Intervertebral disc (IVD) degeneration is a major risk factor of low back pain. It is defined by a progressive loss of the IVD structure and functionality, leading to severe impairments with restricted treatment options due to the highly demanding mechanical exposure of the IVD. Degenerative changes in the IVD usually increase with age but at an accelerated rate in some individuals. To understand the initiation and progression of this disease, it is crucial to identify key top-down and bottom-up regulations' processes, across the cell, tissue, and organ levels, in health and disease. Owing to unremitting investigation of experimental research, the comprehension of detailed cell signaling pathways and their effect on matrix turnover significantly rose. Likewise, in silico research substantially contributed to a holistic understanding of spatiotemporal effects and complex, multifactorial interactions within the IVD. Together with important achievements in the research of biomaterials, manifold promising approaches for regenerative treatment options were presented over the last years. This review provides an integrative analysis of the current knowledge about (1) the multiscale function and regulation of the IVD in health and disease, (2) the possible regenerative strategies, and (3) the in silico models that shall eventually support the development of advanced therapies.
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Affiliation(s)
- Laura Baumgartner
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
| | - Karin Wuertz-Kozak
- Department of Biomedical Engineering, Rochester Institute of Technology (RIT), Rochester, NY 14623, USA;
- Schön Clinic Munich Harlaching, Spine Center, Academic Teaching Hospital and Spine Research Institute of the Paracelsus Medical University Salzburg (Austria), 81547 Munich, Germany
| | - Christine L. Le Maitre
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield S1 1WB, UK;
| | - Francis Wignall
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (F.W.); (S.M.R.); (J.H.)
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (F.W.); (S.M.R.); (J.H.)
| | - Judith Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (F.W.); (S.M.R.); (J.H.)
| | - Carlos Ruiz Wills
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
| | - Miguel A. González Ballester
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
- Catalan Institution for Research and Advanced Studies (ICREA), Pg. Lluis Companys 23, 08010 Barcelona, Spain
| | - Michael Neidlin
- Department of Mechanical Engineering, National Technical University of Athens, 15780 Athens, Greece; (M.N.); (L.G.A.)
| | - Leonidas G. Alexopoulos
- Department of Mechanical Engineering, National Technical University of Athens, 15780 Athens, Greece; (M.N.); (L.G.A.)
| | - Jérôme Noailly
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
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Guo HY, Guo MK, Wan ZY, Song F, Wang HQ. Emerging evidence on noncoding-RNA regulatory machinery in intervertebral disc degeneration: a narrative review. Arthritis Res Ther 2020; 22:270. [PMID: 33198793 PMCID: PMC7667735 DOI: 10.1186/s13075-020-02353-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is the most common cause of low-back pain. Accumulating evidence indicates that the expression profiling of noncoding RNAs (ncRNAs), including microRNAs (miRNAs), circular RNAs (circRNAs), and long noncoding RNAs (lncRNAs), are different between intervertebral disc tissues obtained from healthy individuals and patients with IDD. However, the roles of ncRNAs in IDD are still unclear until now. In this review, we summarize the studies concerning ncRNA interactions and regulatory functions in IDD. Apoptosis, aberrant proliferation, extracellular matrix degradation, and inflammatory abnormality are tetrad fundamental pathologic phenotypes in IDD. We demonstrated that ncRNAs are playing vital roles in apoptosis, proliferation, ECM degeneration, and inflammation process of IDD. The ncRNAs participate in underlying mechanisms of IDD in different ways. MiRNAs downregulate target genes’ expression by directly binding to the 3′-untranslated region of mRNAs. CircRNAs and lncRNAs act as sponges or competing endogenous RNAs by competitively binding to miRNAs and regulating the expression of mRNAs. The lncRNAs, circRNAs, miRNAs, and mRNAs widely crosstalk and form complex regulatory networks in the degenerative processes. The current review presents novel insights into the pathogenesis of IDD and potentially sheds light on the therapeutics in the future.
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Affiliation(s)
- Hao-Yu Guo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China
| | - Ming-Ke Guo
- Department of Orthopaedic Surgery, The Affiliated Hospital of PLA Army Medical University Warrant Officer School, Shijiazhuang, 050000, People's Republic of China
| | - Zhong-Yuan Wan
- Department of Orthopedics, The Seventh Medical Center of Chinese PLA General Hospital, Beijing, 100700, People's Republic of China
| | - Fang Song
- Department of Stomatology, PLA Rocket Force Characteristic Medical Center, Beijing, 100088, People's Republic of China
| | - Hai-Qiang Wang
- Institute of Integrative Medicine, Shaanxi University of Chinese Medicine, Xixian Avenue, Xixian District, Shaanxi Province, 712046, People's Republic of China.
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21
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Regulation of Apoptosis and Inflammatory Response in Interleukin-1β-Induced Nucleus Pulposus Cells by miR-125b-5p Via Targeting TRIAP1. Biochem Genet 2020; 59:475-490. [PMID: 33123835 DOI: 10.1007/s10528-020-10009-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/16/2020] [Indexed: 12/18/2022]
Abstract
The aim of the present study was to determine the function of microRNA (miR)-125b-5p in lumbar disc degeneration (LDD). Nucleus pulposus (NP) cells were stimulated with 10 ng/ml IL-1β for 24 h to establish an LDD model. Reverse transcription-quantitative PCR was used to assess miR-125b-5p levels in human lumbar degenerative NP samples and IL-1β-treated NP cells. An interaction between miR-125b-5p and TP53-regulated inhibitor of apoptosis 1 (TRIAP1) was revealed by TargetScan 7.1 and dual-luciferase reporter assay. Protein levels of pro-inflammatory factors were determined using ELISA. Cell viability and apoptosis were evaluated by MTT and flow cytometry analysis, respectively. miR-125b-5p was markedly upregulated in both human lumbar degenerative NP specimens and IL-1β-treated NP cells. TRIAP1, which directly targets miR-125b-5p, was markedly downregulated in human lumbar degenerative NP specimens and IL-1β-treated NP cells. The levels of TNF-α and IL-6 were inhibited in IL-1β-treated NP cells transfected with miR-125b-5p inhibitor. Moreover, miR-125b-5p inhibitor increased NP cell viability, prevented apoptosis and repressed the apoptotic peptidase activating factor 1/caspase 9 pathway in IL-1β-treated NP cells. Thus, the present findings suggested that miR-125b-5p could regulate LDD by adjusting NP cell apoptosis and inflammatory responses via TRIAP1.
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22
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Wang XQ, Tu WZ, Guo JB, Song G, Zhang J, Chen CC, Chen PJ. A Bioinformatic Analysis of MicroRNAs' Role in Human Intervertebral Disc Degeneration. PAIN MEDICINE 2020; 20:2459-2471. [PMID: 30953590 DOI: 10.1093/pm/pnz015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Objectives The aim of our study was to ascertain the underlying role of microRNAs (miRNAs) in human intervertebral disc degeneration (IDD). Design Bioinformatic analysis from multiple databases. Methods Studies of the association of miRNAs and IDD were identified in multiple electronic databases. All potential studies were assessed by the same inclusion and exclusion criteria. We recorded whether miRNA expression was commonly increased or suppressed in the intervertebral disc tissues and cells of IDD subjects. We used String to identify biological process and cellular component pathways of differentially expressed genes. Results We included fifty-seven articles from 1,277 records in this study. This report identified 40 different dysregulated miRNAs in 53 studies, including studies examining cell apoptosis (26 studies, 49.06%), cell proliferation (15 studies, 28.3%), extracellular matrix (ECM) degradation (10 studies, 18.86%), and inflammation (five studies, 9.43%) in IDD patients. Three upregulated miRNAs (miR-19b, miR-32, miR-130b) and three downregulated miRNAs (miR-31, miR-124a, miR-127-5p) were considered common miRNAs in IDD tissues. The top three biological process pathways for upregulated miRNAs were positive regulation of biological process, nervous system development, and negative regulation of biological process, and the top three biological process pathways for downregulated miRNAs were negative regulation of gene expression, intracellular signal transduction, and negative regulation of biological process. Conclusions This study revealed that miRNAs could be novel targets for preventing IDD and treating patients with IDD by regulating their target genes. These results provide valuable information for medical professionals, IDD patients, and health care policy makers.
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Affiliation(s)
- Xue-Qiang Wang
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Equal contribution
| | - Wen-Zhan Tu
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Equal contribution
| | - Jia-Bao Guo
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ge Song
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Juan Zhang
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chang-Cheng Chen
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Pei-Jie Chen
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China; †Department of Rehabilitation Medicine, Shanghai Shangti Orthopaedic Hospital, Shanghai, China; ‡Department of Rehabilitation Medicine, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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23
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Zhao Z, Zheng J, Ye Y, Zhao K, Wang R, Wang R. MicroRNA‑25‑3p regulates human nucleus pulposus cell proliferation and apoptosis in intervertebral disc degeneration by targeting Bim. Mol Med Rep 2020; 22:3621-3628. [PMID: 32901887 PMCID: PMC7533515 DOI: 10.3892/mmr.2020.11483] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 02/25/2020] [Indexed: 12/22/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is a degenerative disease of the spine originating from the intervertebral disc. MicroRNAs (miRNAs or miRs) are a group of endogenous small non‑coding RNAs that act on target genes and play a critical role in numerous biological processes. However, the underlying mechanism of miR‑25‑3p in IDD remains unclear. Therefore, the present study aimed to explore the role of miR‑25‑3p in the pathogenesis of IDD. The results demonstrated that miR‑25‑3p was downregulated in rat degenerative nucleus pulposus (NP) cells and that Bcl‑2 interacting mediator of cell death (Bim) was a direct target of miR‑25‑3p. Next, to investigate the effect of miR‑25‑3p on normal NP cell proliferation and apoptosis, NP cells were transfected with an miR‑25‑3p inhibitor, a negative control of miR‑25‑3p inhibitor, miR‑25‑3p inhibitor + control‑small interference RNA (siRNA) or miR‑25‑3p inhibitor + Bim‑siRNA for 48 h and cell proliferation and apoptosis were then analyzed. The results demonstrated that the miR‑25‑3p inhibitor could decrease NP cell proliferation and induce cell apoptosis, and these effects were reversed by Bim‑siRNA. In addition, an in vitro cell model of IDD was established by subjecting NP cells to 10 ng/ml interleukin (IL)‑1β for 24 h. Further experiments suggested that IL‑1β treatment induced a reduction in NP cell proliferation and an increase in cell apoptosis, which were prevented by the miR‑25‑3p mimic. All the effects of miR‑25‑3p mimic on IL‑1β‑treated NP cells were significantly reversed by Bim upregulation. These findings suggested that miR‑25‑3p may be a novel therapeutic target for IDD prevention.
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Affiliation(s)
- Zhifang Zhao
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Jie Zheng
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Youchen Ye
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Kefeng Zhao
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Ruozhang Wang
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
| | - Ran Wang
- Department of Orthopedics, No. 903 Hospital of People's Liberation Army, Hangzhou, Zhejiang 310013, P.R. China
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Wang X, Chen N, Du Z, Ling Z, Zhang P, Yang J, Khaleel M, Khoury AN, Li J, Li S, Huang H, Zhou X, Han Y, Wei F. Bioinformatics analysis integrating metabolomics of m 6A RNA microarray in intervertebral disc degeneration. Epigenomics 2020; 12:1419-1441. [PMID: 32627576 DOI: 10.2217/epi-2020-0101] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: To explore the potential functions and mechanism of N6.methyladenosine (m6A) abnormality of RNAs in nucleus pulposus from the intervertebral disc degeneration (IDD). Materials & methods: We performed rat model, m6A epitranscriptomic microarray, bioinformatics analysis and metabolomics. Results: In IDD, most of the differentially methylated RNAs showed a significant demethylation situation. The competing endogenous RNA network LOC102555094/miR-431/GSK-3β combining downstream Wnt pathway were identified in bioinformatics analysis. For metabolomics, activation of Wnt pathway led to reprogramming of glucose metabolism and enzyme activation of PKM2. Finally, quantitative real-time PCR and methylated RNA immunoprecipitation coupled with quantitative real-time PCR revealed the positive correlation between demethylation of LOC102555094 and expression of both FTO and ZFP217. Conclusion: LOC102555094 might be demethylated by ZFP217, activating FTO and LOC102555094/miR-431/GSK-3β/Wnt played a crucial role in IDD.
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Affiliation(s)
- Xiaoshuai Wang
- Department of Orthopedics, The Seventh Affiliated Hospital of Sun Yat-sen University, No. 628, Zhenyuan Rd, Shenzhen, 518107, China
| | - Ningning Chen
- Department of Orthopedics, The Seventh Affiliated Hospital of Sun Yat-sen University, No. 628, Zhenyuan Rd, Shenzhen, 518107, China
| | - Zefeng Du
- Department of Clinical Medicine, Zhongshan Medical College of Sun Yat-sen University, No. 74, Zhongshan Er Rd, Guangzhou, 510030, China
| | - Zemin Ling
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510030, China
| | - Penghui Zhang
- Department of Orthopedics, The Seventh Affiliated Hospital of Sun Yat-sen University, No. 628, Zhenyuan Rd, Shenzhen, 518107, China
| | - Jiaming Yang
- Department of Orthopedics, The Seventh Affiliated Hospital of Sun Yat-sen University, No. 628, Zhenyuan Rd, Shenzhen, 518107, China
| | - Mohammed Khaleel
- Department of Orthopaedic Surgery, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA
| | - Anthony N Khoury
- Hip Preservation Center, Baylor University Medical Center at Dallas, TX 75390, USA
| | - Jianwen Li
- Affiliated Dongguan People's Hospital of Southern Medical University, Dongguan, 523000, China
| | - Songbo Li
- Affiliated Dongguan People's Hospital of Southern Medical University, Dongguan, 523000, China
| | - Haoyang Huang
- Department of Clinical Medicine, Zhongshan Medical College of Sun Yat-sen University, No. 74, Zhongshan Er Rd, Guangzhou, 510030, China
| | - Xinwei Zhou
- Department of Clinical Medicine, Zhongshan Medical College of Sun Yat-sen University, No. 74, Zhongshan Er Rd, Guangzhou, 510030, China
| | - Yueyin Han
- Department of Clinical Medicine, Zhongshan Medical College of Sun Yat-sen University, No. 74, Zhongshan Er Rd, Guangzhou, 510030, China
| | - Fuxin Wei
- Department of Orthopedics, The Seventh Affiliated Hospital of Sun Yat-sen University, No. 628, Zhenyuan Rd, Shenzhen, 518107, China
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Zhu L, Shi Y, Liu L, Wang H, Shen P, Yang H. Mesenchymal stem cells-derived exosomes ameliorate nucleus pulposus cells apoptosis via delivering miR-142-3p: therapeutic potential for intervertebral disc degenerative diseases. Cell Cycle 2020; 19:1727-1739. [PMID: 32635856 DOI: 10.1080/15384101.2020.1769301] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is the main cause of lower back pain (LBP), and puzzles massive individuals worldwide. Mesenchymal stem cells (MSCs) transplantation has been demonstrated to potentially ameliorate IDD progression, while the underlying mechanism has not been fully explained. Interleukin-1β (IL-1β) was used to induce nucleus pulposus cells (NPCs) injury. Bone marrow MSCs-derived exosomes were isolated using the super centrifugation method, and characterized using Transmission electron microscopy (TEM) and western blot. Cell viability was determined by MTT, while apoptosis was measured by Annexin-V staining using flow cytometry. miR-142-3fp and gene expressions were measured by real-time PCR. The protein expressions were determined by western blot. Herein, we found exosomes from bone marrow MSCs are circular vesicles, about 80 nm in diameter, and with robust expression of TSG101 and CD63, but without of Calnexin. MSCs exosomes alleviated NPCs apoptosis by reducing IL-1β-induced inflammatory cytokines secretion and MAPK signaling activation. Additionally, MSCs exosomes inhibited NPCs apoptosis and MAPK signaling by delivering miR-142-3p that targets mixed lineage kinase 3 (MLK3). Overexpression of MLK3 abolished the effects of MSCs exosomes on the inflammatory condition, cell apoptosis, and MAPK signaling activation in NPCs. The results confirmed that bone marrow MSCs-derived exosomes-packaged miR-142-3p alleviates NPCs injury through suppressing MAPK signaling by targeting MLK3. The work highlights the therapeutic effect of MSCs on IDD progression, and bone marrow MSCs exosomes might be apromising therapeutic strategy for IDD.
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Affiliation(s)
- Lifan Zhu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, Jiangsu Province, China
| | - Yuhui Shi
- Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, Jiangsu Province, China.,Department of Orthopedics, The Ninth People's Hospital of Suzhou , Suzhou, Jiangsu Province, China
| | - Ling Liu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, Jiangsu Province, China
| | - Huan Wang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, Jiangsu Province, China
| | - Pengcheng Shen
- Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, Jiangsu Province, China.,Department of Orthopedics, The Ninth People's Hospital of Suzhou , Suzhou, Jiangsu Province, China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University , Suzhou, Jiangsu Province, China
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26
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Zhang H, Zhang M, Meng L, Guo M, Piao M, Huang Z, Yu H. Investigation of key miRNAs and their target genes involved in cell apoptosis during intervertebral disc degeneration development using bioinformatics methods. J Neurosurg Sci 2020; 66:125-132. [PMID: 32031354 DOI: 10.23736/s0390-5616.20.04773-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The aim of this study was to identify important miRNAs and their target genes involved in cell apoptosis in intervertebral disc degeneration (IDD) patients. METHODS The dataset, GSE63492, was obtained from the gene expression omnibus platform. After preprocessing, the differentially expressed miRNAs (DEMs) and their target genes were identified using the Limma package and miRWalk2.0 database, respectively. The clusterProfiler package in R was used to perform functional enrichment analysis of these target genes. Subsequently, protein-protein interaction (PPI) network and subnet clusters of the coregulated genes were conducted using the STRING database and MCODE, respectively. Further, the co-regulatory network of the key miRNAs and PPI networks were visualized using Cytoscape. Finally, cell apoptosis-related pathways and the genes enriched in these pathways were identified. RESULTS The genes targeted by the upregulated (hsa-miR-302c-5p, hsa-miR-631, hsa-let-7f-1-3p, hsa-miR-3675-3p, and hsa-miR-585-3p) and downregulated miRNAs (hsa-miR-185-5p, hsa-miR-486-5p, hsa-miR-4306, and hsa-miR-4674) were interrelated with cell apoptosis-related pathways. MAPK1 and MAPK3 were targeted by hsa-miR-185-5p, while GSK3B was targeted hsa-miR-4306, hsa-miR-486-5p, hsa-miR-185-5p, hsa-let-7f-1-3p, and hsa-miR-631. Besides, MAPK3 and VEGFA were regulated by hsa-miR-3675-3p and hsa-miR-631, respectively. CONCLUSIONS The expression of GSK3B may be coregulated by miR-4306, miR-185-5p, miR-486-5p, hsa-let-7f-1-3p, and miR-631 and may affect IDD development. Besides, miR-185-5p and miR-3675-3p may control nucleus pulposus (NP) cell apoptosis through the MAPK signaling pathway in IDD patients. VEGFA expression may be regulated by miR-631, and help maintain NP cell survival in IDD patients. Our findings may help guide further research into the role of miRNAs in IDD progression.
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Affiliation(s)
- Haocong Zhang
- Department of Orthopaedics, The General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Meng Zhang
- The Second Clinical College of Graduate School, Dalian Medical University, Dalian, Liaoning, China
| | - Lingzhi Meng
- Department of Orthopaedics, The General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Mingming Guo
- Department of Orthopaedics, The General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Meihui Piao
- Department of Orthopaedics, The General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Zijun Huang
- The Second Clinical College of Graduate School, Dalian Medical University, Dalian, Liaoning, China
| | - Hailong Yu
- Department of Orthopaedics, The General Hospital of Northern Theater Command, Shenyang, Liaoning, China -
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27
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Yamamoto M, Morita T, Ishikawa M, Sakamoto A. Specific microRNAs are involved in the reno‑protective effects of sevoflurane preconditioning and ischemic preconditioning against ischemia reperfusion injury in rats. Int J Mol Med 2020; 45:1141-1149. [PMID: 31985019 PMCID: PMC7053861 DOI: 10.3892/ijmm.2020.4477] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/08/2020] [Indexed: 01/14/2023] Open
Abstract
The kidneys are prone to developing ischemia reperfusion injury (IRI) following certain renal surgeries and cardiovascular surgeries requiring cardiac arrest. Sevoflurane and ischemic preconditioning reportedly alleviate IRI, which is mediated via microRNAs. The present study compared anesthetic preconditioning (APC) and ischemic preconditioning (IPC) on microRNAs, which promote cell‑survival pathways in rats in a randomized controlled study. After undergoing right nephrectomy under general anesthesia, male Wistar rats (336±24 g) and were divided into four groups (IRI, APC, IPC and sham; n=7 each). The IRI group underwent 45 min clamping of the left renal vasculature, followed by 4 h of reperfusion. APC involved exposure to one minimum alveolar concentration sevoflurane for 15 min. IPC included three cycles of two‑min clamping and five‑min reperfusion. Blood and renal biopsy samples were assessed postoperatively to measure serum creatinine and to analyze renal microRNA (miR) expression using reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) testing and their target pathways with Ingenuity Pathway Analysis™. The present study found that serum creatinine values in APC (0.71±0.08 mg/dl) and IPC (0.73±0.1 mg/dl) groups were lower than in the IRI group (0.96±0.13 mg/dl; P<0.05), indicating amelioration of IRI by APC and IPC. RT‑qPCR followed by pathway analysis indicated that APC and IPC affect 'protein kinase B (Akt)'. APC promoted miR‑17‑3p and suppressed miR‑27a. IPC promoted miR‑19a. All the miRs were predicted to regulate phosphorylated Akt, which promotes cell‑protection. Western blot analysis showed that expression of phosphorylated Akt increased and phosphatase and tensin homologue deleted from chromosome 10 (PTEN) decreased following APC and IPC. The present study concluded that APC and IPC affect different miRs, although they are estimated to similarly promote the PTEN/phosphoinositide 3‑kinase/Akt signaling pathway, resulting in reno‑protection.
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Affiliation(s)
- Makiko Yamamoto
- Department of Anesthesiology and Pain Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo 1138602, Japan
| | - Tomonori Morita
- Department of Anesthesiology and Pain Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo 1138602, Japan
| | - Masashi Ishikawa
- Department of Anesthesiology and Pain Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo 1138602, Japan
| | - Atsuhiro Sakamoto
- Department of Anesthesiology and Pain Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo 1138602, Japan
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Zhang HJ, Ma XH, Xie SL, Qin SL, Liu CZ, Zhang ZG. Knockdown of miR-660 protects nucleus pulposus cells from TNF-a-induced apoptosis by targeting serum amyloid A1. J Orthop Surg Res 2020; 15:7. [PMID: 31907065 PMCID: PMC6945720 DOI: 10.1186/s13018-019-1538-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 12/20/2019] [Indexed: 12/27/2022] Open
Abstract
Background Intervertebral disc degeneration (IVDD) is a well-known cause of lower back pain, which is induced by multiple factors including increased apoptosis and decreased survival of nucleus pulposus cells. In this study, we evaluate the effect and potential mechanism of miR-660 on the nucleus pulposus cells apoptosis induced by TNF-α. Methods First, we collected tissue of nucleus pulposus from IVDD and healthy controls. General characteristic of the IVDD and healthy control was also collected. And, we also collected nucleus pulposus cells that stimulated by TNF-α or control. miRNA microarray was performed to identify the differentially expressed miRNAs. Apoptosis rate and miR-660 relative expression was measured after stimulated with different concentration of TNF-α to identify the optimal concentration of TNF-α. Second, we successfully constructed antigomiR-660 to block the miR-660 expression in nucleus pulposus cells and then stimulated with TNF-α (100 ng/ml, 12 h). The apoptosis rates and relative protein expression were then measured again. The target association between miR-660 and SAA1 was confirmed by dual-luciferase reporter. Results There was no significant difference between the age (IVDD: 39 ± 10 years, healthy controls: 36 ± 7 years), BMI and sex between IVDD and healthy controls. Microarray analysis found that miR-660 was significantly up-regulated in IVDD and TNF-α treated groups, which was further identified by PCR. We found that the rate of apoptosis and miR-660 expression increased with TNF-α concentration increased. Finally, TNF-a with 100 ng/ml was used for further experiment. Compared with TNF-α group, TNF-α + antigomiR-660 could significantly down-regulated the apoptosis rate and relative protein (c-Caspase3 and c-Caspase7). Dual-luciferase reporter revealed that miR-660 could directly binding to the SAA1 at 80–87 sites. Compared with TNF-α alone group, TNF-α + antigomiR-660 significantly up-regulated the SAA1 expression (P < 0.05). Conclusion These results indicated that knockdown of miR-660 protected the nucleus pulposus from apoptosis that induced TNF-α via up-regulation of SAA1. Further studies should focus on the role of miR-660 in protecting IVDD in vivo.
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Affiliation(s)
- Hao Jie Zhang
- Department of Orthopedics, Huai An Hospital of Huai An City, No.161, Zhen Huai Lou East Road, Huai An District, Huai An City, 223200, JiangSu Province, China
| | - Xue Hai Ma
- Department of Orthopedics, Huai An Hospital of Huai An City, No.161, Zhen Huai Lou East Road, Huai An District, Huai An City, 223200, JiangSu Province, China
| | - Song Lin Xie
- Department of Orthopedics, Huai An Hospital of Chinese Medicine, No.3.He Ping Road, Qing Jiang Pu District, Huai An City, 223200, Jiang Su Province, China
| | - Shu Lian Qin
- Department of Orthopedics, Huai An Hospital of Chinese Medicine, No.3.He Ping Road, Qing Jiang Pu District, Huai An City, 223200, Jiang Su Province, China
| | - Cong Zhi Liu
- Department of Orthopedics, Huai An Hospital of Huai An City, No.161, Zhen Huai Lou East Road, Huai An District, Huai An City, 223200, JiangSu Province, China
| | - Zhen Guo Zhang
- Department of Orthopedics, Huai An Hospital of Chinese Medicine, No.3.He Ping Road, Qing Jiang Pu District, Huai An City, 223200, Jiang Su Province, China.
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Xi Y, Ma J, Chen Y. PTEN promotes intervertebral disc degeneration by regulating nucleus pulposus cell behaviors. Cell Biol Int 2019; 44:583-592. [PMID: 31663655 DOI: 10.1002/cbin.11258] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 10/26/2019] [Indexed: 12/30/2022]
Abstract
Intervertebral disc degeneration (IDD) is induced by multiple factors including increased apoptosis, decreased survival, and reduced extracellular matrix (ECM) synthesis in the nucleus pulposus (NP) cells. The tumor suppressor phosphatase and tensin homolog deleted from chromosome 10 (PTEN) is the only known lipid phosphatase counteracting the PI3K/AKT pathway. Loss of PTEN leads to activated PI3K/AKT signaling, which plays a key role in a variety of cancers. However, the role of PTEN/PI3K/AKT signaling nexus in IDD remains unknown. Here, we report that PTEN is overexpressed in degenerative NP, which correlates with inactivated AKT. Using the PTEN knockdown approach by lentivirus-mediated short interfering RNA gene transfer technique, we report that PTEN decreases survival but induces apoptosis and senescence of NP cells. PTEN also inhibits expression and production of ECM components including collagen II, aggrecan, and proteoglycan. Furthermore, PTEN modulates the expression of ECM regulatory molecules SOX-9 and matrix metalloproteinase-3 (MMP-3). Using small-molecule AKT inhibitor GDC-0068, we confirm that PTEN regulates NP cell behaviors through its direct targeting of PI3K/AKT. These findings demonstrate for the first time that PTEN/PI3K/AKT signaling axis plays an important role in the pathogenesis of IDD. Targeting PTEN using gene therapy may represent a promising therapeutic approach against disc degenerative diseases.
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Affiliation(s)
- Yongming Xi
- Department of Orthopaedics, Affiliated Hospital of Qingdao University Medical College, Qingdao, 266000, China
| | - Jinfeng Ma
- Department of Orthopaedics, Affiliated Hospital of Qingdao University Medical College, Qingdao, 266000, China
| | - Yan Chen
- Division in Signaling Biology, Research Institute, Princess Margaret Cancer Center, University Health Network, Toronto, M5G 1L7, Canada
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Zhang J, Cao Z, Yang G, You L, Zhang T, Zhao Y. MicroRNA-27a (miR-27a) in Solid Tumors: A Review Based on Mechanisms and Clinical Observations. Front Oncol 2019; 9:893. [PMID: 31572683 PMCID: PMC6751266 DOI: 10.3389/fonc.2019.00893] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs (miRNAs) are a family of highly conserved, non-coding single-stranded RNAs transcribed as ~70 nucleotide precursors to an 18–22 nucleotide product (1). miRNAs can silence their homologous target genes at the post-transcriptional level, and these genes have been revealed to play an important role in tumorigenesis, invasion and metastasis (2). MicroRNA-27a (miR-27a), transcripted by miR-27a gene, has proved to implicate with many kinds of solid tumors, showing potential as a useful biomarker or drug target for clinical application. However, even though miR-27a has been reported in many cancers, the mechanism and signal pathways of miR-27 in oncogenesis, invasion, and metastasis are still obscure. Moreover, recent studies show that miR-27a pays an important role in epithelial-mesenchymal-transition, regulating tumor immune response, and chemoresistance. In this review, we summarize the current literature, demonstrate the established link between miR-27a and tumorigenesis, and focus on recently identified mechanisms. The review also aims to demonstrate the potential of miR-27a as a diagnostic and/or prognostic biomarker in solid tumors and to discuss the possibilities of targeted therapy and drug design.
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Affiliation(s)
- Jingcheng Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhe Cao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gang Yang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei You
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Taiping Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Clinical Immunology Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yupei Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Dong W, Liu J, Lv Y, Wang F, Liu T, Sun S, Liao B, Shu Z, Qian J. miR-640 aggravates intervertebral disc degeneration via NF-κB and WNT signalling pathway. Cell Prolif 2019; 52:e12664. [PMID: 31343104 PMCID: PMC6797513 DOI: 10.1111/cpr.12664] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/29/2019] [Accepted: 06/17/2019] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES Low back pain becomes a common orthopaedic disease today. It is mainly induced by the degeneration of the intervertebral disc. In this study, we tried to reveal the pathogenesis of the degeneration and the relative therapeutic strategy, which are still elusive. MATERIALS AND METHODS We collected 15 degenerative intervertebral tissues and five healthy donors. Nucleus pulposus and annulus fibrosus cells were subcultured. miR-640 expression was determined by qPCR. Computer analysis and luciferase reporter assay were used to confirm miR-640 target genes. Immunohistochemical and immunocytochemical staining was used to trace the proinflammatory cytokines and key transductor of signalling pathways. We also used β-galactosidase staining, flow cytometry, and cell viability assay to monitor the degenerative index. RESULTS miR-640 overexpressed in patients derived degenerative nucleus pulposus tissues and cells. The inflammatory environment promoted miR-640 expression via NF-κB signalling pathway. In addition, miR-640 targeted to LRP1 and enhances NF-κB signal activity, which built a positive feedback loop. miR-640 inhibited the expression of β-catenin and EP300, therefore, restrained WNT signal and induced the degeneration in nucleus pulposus cells. miR-640 inhibitor treatment exhibited the effects of anti-inflammation, reverse WNT signalling pathway exhaustion, and remission of degenerative characteristics in vitro. CONCLUSIONS miR-640 plays an important role in the degeneration of intervertebral disc and the relative inflammatory microenvironment. It is a promising potential therapeutic target for the low back pain biotherapy.
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Affiliation(s)
- Wengang Dong
- Department of OrthopaedicsThe Second Affiliated Hospital of Air Force Medical UniversityXi’anChina
- Department of OrthopaedicsGeneral Hospital of Lanzhou Military CommandLanzhouChina
| | - Jun Liu
- Laboratory of Molecular BiologyDisease Control and Prevention Center of PLA’s Southern Theatre CommandGuangzhouChina
- Biotechnology Center, School of PharmacyAir Force Medical UniversityXi’anChina
| | - Yang Lv
- Department of OrthopaedicsGeneral Hospital of Lanzhou Military CommandLanzhouChina
- Department of OphthalmologyEye Institute of China PLA, The First Affiliated Hospital of Air Force Medical UniversityXi’anChina
| | - Fei Wang
- Department of OrthopaedicsGeneral Hospital of Lanzhou Military CommandLanzhouChina
| | - Tao Liu
- Department of OrthopaedicsThe Second Affiliated Hospital of Air Force Medical UniversityXi’anChina
| | - Siguo Sun
- Department of OrthopaedicsThe Second Affiliated Hospital of Air Force Medical UniversityXi’anChina
| | - Bo Liao
- Department of OrthopaedicsThe Second Affiliated Hospital of Air Force Medical UniversityXi’anChina
| | - Zhen Shu
- Department of Radiation OncologyWinship Cancer Institute, Emory University School of MedicineAtlantaGAUSA
| | - Jixian Qian
- Department of OrthopaedicsThe Second Affiliated Hospital of Air Force Medical UniversityXi’anChina
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Cai C, Min S, Yan B, Liu W, Yang X, Li L, Wang T, Jin A. MiR-27a promotes the autophagy and apoptosis of IL-1β treated-articular chondrocytes in osteoarthritis through PI3K/AKT/mTOR signaling. Aging (Albany NY) 2019; 11:6371-6384. [PMID: 31460867 PMCID: PMC6738432 DOI: 10.18632/aging.102194] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/10/2019] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is a common degenerative joint disorder, which involves articular cartilage degeneration as well as joint inflammatory reactions. The recent studies have identified microRNA (miRNA) as one of the epigenetic mechanisms for the regulation of gene expression. Here we aim to reveal the role of miRNA in the regulation of gene expression in articular chondrocytes and its significance in the OA pathogenesis. In the present study, miRNA profiling was performed using OA cartilage and normal healthy cartilage tissues. As compared to their levels in normal cells and tissues, miR-27a expression was found to be upregulated in OA cartilage and IL-1β-treated articular chondrocytes. TUNEL staining, as well as flow cytometry with Annexin V-FITC/PI double labeling indicated that miR-27a inhibition reduced the apoptosis of IL-1β-treated articular chondrocytes. Bioinformatics prediction and the dual-luciferase reporter assay indicated that miR-27a targeted the 3'-UTR of the PI3K gene to silence it. The PI3K mRNA level in OA cartilage and IL-1β-treated articular chondrocytes was also downregulated, comparing with normal cells and tissues. Transfection of chondrocytes transfected with the miR-27a inhibitor upregulated the PI3K expression. This study demonstrated miR-27a is a regulator of the PI3K-Akt-mTOR axis in human chondrocytes and could participate in OA pathogenesis.
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Affiliation(s)
- Chen Cai
- Department of Spine Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Shaoxiong Min
- Department of Spine Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Bo Yan
- Department of Spine Surgery, The Third Affliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Wen Liu
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiao Yang
- Department of Spine Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Liuxun Li
- Department of Spine Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ting Wang
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, China
| | - Anmin Jin
- Department of Spine Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Hasvik E, Schjølberg T, Jacobsen DP, Haugen AJ, Grøvle L, Schistad EI, Gjerstad J. Up-regulation of circulating microRNA-17 is associated with lumbar radicular pain following disc herniation. Arthritis Res Ther 2019; 21:186. [PMID: 31409426 PMCID: PMC6693234 DOI: 10.1186/s13075-019-1967-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 07/25/2019] [Indexed: 02/07/2023] Open
Abstract
Background Previous studies suggest that regulatory microRNAs (miRs) may modulate neuro-inflammatory processes. The purpose of the present study was to examine the role of miR-17 following intervertebral disc herniation. Methods In a cohort of 97 patients with leg pain and disc herniation verified on MRI, we investigated the association between circulating miR-17 and leg pain intensity. A rat model was used to examine possible changes in miR-17 expression in nucleus pulposus (NP) associated with leak of NP tissue out of the herniated disc. The functional role of miR-17 was addressed by transfection of miR-17 into THP-1 cells (human monocyte cell line). Results An association between the level of miR-17 in serum and the intensity of lumbar radicular pain was shown. Up-regulation of miR-17 in the rat NP tissue when applied onto spinal nerve roots and increased release of TNF following transfection of miR-17 into THP-1 cells were also observed. Hence, our data suggest that miR-17 may be involved in the pathophysiology underlying lumbar radicular pain after disc herniation. Conclusions We conclude that miR-17 may be associated with the intensity of lumbar radicular pain after disc herniation, possibly through a TNF-driven pro-inflammatory mechanism. Electronic supplementary material The online version of this article (10.1186/s13075-019-1967-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Eivind Hasvik
- Department of Physical Medicine and Rehabilitation, Østfold Hospital Trust, Grålum, Norway.
| | - Tiril Schjølberg
- Department of Work Psychology and Physiology, National Institute of Occupational Health, Oslo, Norway
| | - Daniel Pitz Jacobsen
- Department of Work Psychology and Physiology, National Institute of Occupational Health, Oslo, Norway
| | | | - Lars Grøvle
- Department of Rheumatology, Østfold Hospital Trust, Grålum, Norway
| | | | - Johannes Gjerstad
- Department of Work Psychology and Physiology, National Institute of Occupational Health, Oslo, Norway
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Li X, Lou Z, Liu J, Li H, Lei Y, Zhao X, Zhang F. Upregulation of the long noncoding RNA lncPolE contributes to intervertebral disc degeneration by negatively regulating DNA polymerase epsilon. Am J Transl Res 2019; 11:2843-2854. [PMID: 31217858 PMCID: PMC6556648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
Long noncoding RNAs (lncRNAs) are critical regulators of gene transcription. Our previous results have demonstrated that iron deficiency accelerates intervertebral disc degeneration (IDD) by affecting the stability of the DNA polymerase epsilon (Polε) complex. Here, we discovered that the novel lncRNA lncPolE functions as a negative regulator of Polε. The expression of lncPolE in IDD tissues was upregulated compared to its expression in healthy control tissues, and this was in contrast to the PolE1 expression levels. The increased lncPolE level was significantly correlated with the severity of IDD. Ectopic expression of lncPolE in human nucleus pulposus cells (hNPCs) was able to decrease PolE1 levels and cause apoptosis, while the specific knockdown of lncPolE in primary NP cells (pNPCs) from IDD patients can restore PolE1 levels. Interestingly, iron depletion or supplementation can affect the expression of lncPolE. Further analyses indicated that the downregulation of DNA methylation in the promoter region of lncPolE caused its overexpression. Collectively, our results suggest that the aberrant expression of lncPolE contributes to the pathogenesis of IDD by negatively regulating PolE1 in iron deficient conditions, and this may provide a new avenue to alleviate IDD progression in clinical treatment.
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Affiliation(s)
- Xingguo Li
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, Yunnan, China
| | - Zhenkai Lou
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, Yunnan, China
| | - Jie Liu
- Department of Orthopedics, The First People’s Hospital of YunnanKunming 650032, Yunnan, China
| | - Hongkun Li
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, Yunnan, China
| | - Yu Lei
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, Yunnan, China
| | - Xueling Zhao
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, Yunnan, China
| | - Fan Zhang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, Yunnan, China
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Cabral A, da Silva Cândido D, Monteiro SM, Lemos F, Saitovitch D, Noronha IL, Alves LF, Geraldo MV, Kalil J, Cunha-Neto E, Pinto Ferreira LR, Coelho V. Differential microRNA Profile in Operational Tolerance: A Potential Role in Favoring Cell Survival. Front Immunol 2019; 10:740. [PMID: 31073299 PMCID: PMC6496457 DOI: 10.3389/fimmu.2019.00740] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 03/19/2019] [Indexed: 02/06/2023] Open
Abstract
Background: Operational tolerance (OT) is a state of graft functional stability that occurs after at least 1 year of immunosuppressant withdrawal. MicroRNAs (microRNA) are small non-coding RNAs that downregulate messenger RNA/protein expression of innumerous molecules and are critical for homeostasis. We investigated whether OT in kidney transplantation displays a differential microRNA profile, which would suggest that microRNAs participate in Operational Tolerance mechanisms, and may reveal potential molecular pathways. Methods: We first compared serum microRNA in OT (n = 8) with chronic rejection (CR) (n = 5) and healthy individuals (HI) (n = 5), using a 768-microRNA qPCR-panel. We used the Thermo Fisher Cloud computing platform to compare the levels of microRNAs in the OT group in relation to the other study groups. We performed validation experiments for miR-885-5p, by q-PCR, in a larger number of study subjects (OT = 8, CR = 12, HI = 12), as individual samples. Results: We detected a differential microRNA profile in OT vs. its opposing clinical outcome—CR—suggesting that microRNAs may integrate transplantation tolerance mechanisms. Some miRNAs were detected at higher levels in OT: miR-885-5p, miR-331-3p, miR-27a-5p vs. CR; others, we found at lower levels: miR-1233-3p, miR-572, miR-638, miR-1260a. Considering highly predicted/experimentally demonstrated targets of these miRNAs, bioinformatics analysis revealed that the granzyme B, and death receptor pathways are dominant, suggesting that cell death regulation integrates transplantation tolerance mechanisms. We confirmed higher miR-885-5p levels in OT vs. CR, and vs. HI, in a larger number of subjects. Conclusions: We propose that epigenetics mechanisms involving microRNAs may integrate human transplantation tolerance mechanisms, and regulate key members of the cell death/survival signaling. miR-885-5p could favor cell survival in OT by diminishing the levels of CRADD/RAIDD and CASP3. Nonetheless, given the nature of any complex phenomenon in humans, only cumulative data will help to determine whether this microRNA differential profile may be related to the cause or consequence of operational tolerance.
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Affiliation(s)
- Amanda Cabral
- Laboratório de Imunologia, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Darlan da Silva Cândido
- Laboratório de Imunologia, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Sandra Maria Monteiro
- Laboratório de Imunologia, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Francine Lemos
- Serviço de Transplante Renal, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - David Saitovitch
- Divisão de Nefrologia, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Irene L Noronha
- Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil.,Laboratório de Nefrologia Celular, Genética e Molecular, Disciplina de Nefrologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Letícia Ferreira Alves
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, São Paulo, Brazil
| | - Murilo Vieira Geraldo
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, São Paulo, Brazil
| | - Jorge Kalil
- Laboratório de Imunologia, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil.,Laboratório de Histocompatibilidade e Imunologia Celular, LIM-19, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Edecio Cunha-Neto
- Laboratório de Imunologia, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil.,Laboratório de Histocompatibilidade e Imunologia Celular, LIM-19, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | | | - Verônica Coelho
- Laboratório de Imunologia, Instituto do Coração (InCor), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Instituto de Investigação em Imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil.,Laboratório de Histocompatibilidade e Imunologia Celular, LIM-19, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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Li Z, Li X, Bi J, Chan MTV, Wu WKK, Shen J. Melatonin protected against the detrimental effects of microRNA-363 in a rat model of vitamin A-associated congenital spinal deformities: Involvement of Notch signaling. J Pineal Res 2019; 66:e12558. [PMID: 30653707 DOI: 10.1111/jpi.12558] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 12/30/2018] [Accepted: 12/30/2018] [Indexed: 12/18/2022]
Abstract
Congenital spinal deformities are a result of defective somitogenesis and are associated with vitamin A deficiency (VAD). However, the molecular mechanisms of VAD-associated congenital spinal deformities remain largely unknown. Increasing number of studies suggested that microRNAs and melatonin played important roles in the development of congenital spinal deformities. In this study, we showed that the whole-embryo expression of miR-363 was upregulated in VAD rats. Furthermore, we demonstrated that miR-363 inhibited the proliferation and neuronal differentiation of primary cultured NSCs, accompanied by downregulation of Notch1. To this end, melatonin suppressed miR-363 expression and rescued the effects of miR-363 on NSC proliferation and neuronal differentiation together with restoration of Notch signaling. The present study provided new insights into the mechanism of VAD-associated spinal deformities and the therapeutic effect of melatonin that may lead to novel understanding of the molecular mechanisms of congenital spinal deformities.
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Affiliation(s)
- Zheng Li
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xingye Li
- Department of Orthopedic Surgery, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, Jishuitan Orthopaedic College of Tsinghua University, Beijing, China
| | - Jiaqi Bi
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Jianxiong Shen
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Curcumin and o-Vanillin Exhibit Evidence of Senolytic Activity in Human IVD Cells In Vitro. J Clin Med 2019; 8:jcm8040433. [PMID: 30934902 PMCID: PMC6518239 DOI: 10.3390/jcm8040433] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 03/26/2019] [Indexed: 01/21/2023] Open
Abstract
Curcumin and o-Vanillin cleared senescent intervertebral disc (IVD) cells and reduced the senescence-associated secretory phenotype (SASP) associated with inflammation and back pain. Cells from degenerate and non-mildly-degenerate human IVD were obtained from organ donors and from patients undergoing surgery for low back pain. Gene expression of senescence and SASP markers was evaluated by RT-qPCR in isolated cells, and protein expression of senescence, proliferation, and apoptotic markers was evaluated by immunocytochemistry (ICC). The expression levels of SASP factors were evaluated by enzyme-linked immunosorbent assay (ELISA). Matrix synthesis was verified with safranin-O staining and the Dimethyl-Methylene Blue Assay for proteoglycan content. Western blotting and ICC were used to determine the molecular pathways targeted by the drugs. We found a 40% higher level of senescent cells in degenerate compared to non-mildly-degenerate discs from unrelated individuals and a 10% higher level in degenerate compared to non-mildly-degenerate discs from the same individual. Higher levels of senescence were associated with increased SASP. Both drugs cleared senescent cells, and treatment increased the number of proliferating as well as apoptotic cells in cultures from degenerate IVDs. The expression of SASP factors was decreased, and matrix synthesis increased following treatment. These effects were mediated through the Nrf2 and NFkB pathways.
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Wang R, Wen B, Sun D. miR-573 regulates cell proliferation and apoptosis by targeting Bax in nucleus pulposus cells. Cell Mol Biol Lett 2019; 24:2. [PMID: 30936926 PMCID: PMC6425651 DOI: 10.1186/s11658-018-0132-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/11/2018] [Indexed: 01/06/2023] Open
Abstract
Background MicroRNA (miRNA) plays a vital role in the pathogenesis of intervertebral disc degeneration (IDD). The expression and potential mechanism of miR-573 in human nucleus pulposus (NP) remains to be elucidated. In this study, we aimed to investigate the role of miR-573 in IDD. Methods Quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis was applied to examine the expression of miR-573 and Bax in idiopathic scoliosis tissues and IDD tissues. Human NP cells were employed for analysis. Moreover, the proliferation and apoptosis of NP cells were detected using MTT and flow cytometry assay respectively. The expression levels of Bcl-2, cleaved caspase-3, cleaved caspase-9, caspase-3 and caspase-9 in degenerative NP cells were measured by Western blotting assay. Furthermore, a luciferase reporter assay was used to verify the relationship between miR-573 and Bax. Results The results revealed that the mRNA expression level of miR-573 was down-regulated whereas Bax was up-regulated notably in degenerative NP cells. In addition, overexpression of miR-573 increased cell viability remarkably, coupled with inhibition of cell apoptosis. The expression level of Bcl-2 was increased while cleaved caspase-3 and cleaved caspase-9 expression levels were decreased in miR-573 overexpression NP cells. Additionally, the bioinformatics analysis underscored that Bax was a direct target gene of miR-573. Conclusion These results suggest that overexpression of miR-573 inhibited NP cell apoptosis by down-regulating Bax, which proved to be a novel effective strategy for IDD therapies.
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Affiliation(s)
- Rui Wang
- 1Department of Massage and Physiotherapy, Guang Xing Hospital, Zhejiang University of Traditional Chinese Medicine, No. 453, Tiyuchang Road, Xihu District, Hangzhou, Zhejiang 310007 People's Republic of China
| | - Boping Wen
- Department of Rehabilitation, Western Theater General Hospital, Chengdu, Sichuan 610011 People's Republic of China
| | - Dong Sun
- 1Department of Massage and Physiotherapy, Guang Xing Hospital, Zhejiang University of Traditional Chinese Medicine, No. 453, Tiyuchang Road, Xihu District, Hangzhou, Zhejiang 310007 People's Republic of China
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Shen L, Xiao Y, Wu Q, Liu L, Zhang C, Pan X. TLR4/NF-κB axis signaling pathway-dependent up-regulation of miR-625-5p contributes to human intervertebral disc degeneration by targeting COL1A1. Am J Transl Res 2019; 11:1374-1388. [PMID: 30972168 PMCID: PMC6456508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 01/25/2019] [Indexed: 06/09/2023]
Abstract
The activation of the toll-like receptor 4 (TLR4)/nuclear factor-kappa B (NF-κB) signaling pathway has been found to play a critical role in many inflammatory diseases by controlling the expression of many cytokines. However, this pathway's role in the pathological process of intervertebral disc degeneration (IDD) has not been reported to date. In the present study, we found universal activation of the TLR4/NF-κB signaling pathway and elevated levels of pro-inflammatory cytokines in IDD patients. The in vitro analyses in human nucleus pulposus cells (hNPC) and annulus fibrosus cells (hAFC) also indicated that Lipopolysaccharide (LPS) treatment could activate TLR4/NF-κB signaling and induce pro-inflammatory cytokine levels. By comparing the results of two microRNA (miRNA)-based microarrays, we identified 15 miRNAs that were dysregulated in both IDD tissues and LPS-treated cells. Of these miRNAs, the most prominently up-regulated was miR-625-5p, which was predicted to bind to the three prime untranslated region (3'-UTR) of collagen type I alpha 1 (COL1A1). In vitro overexpression or down-regulation of miR-625-5p was able to repress or induce the expression of COL1A1, respectively. The in vitro analyses showed that treatment with LPS, recombinant IL-6 or TNF-α could induce miR-625-5p levels but decrease COL1A1 expression. In contrast, the treatments with their corresponding inhibitors, CLI095, siltuximab and D2E7, respectively, resulted in the exact opposite effects. Taken together, our results suggest that activation of the TLR4/NF-κB signaling pathway induces pro-inflammatory cytokines, which further up-regulates the expression of miR-625-5p, resulting in the down-regulation of COL1A1 and eventually contributing to the pathological process of IDD.
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Affiliation(s)
- Liqi Shen
- Department of Emergency Trauma Surgery, The First People’s Hospital of Yunnan ProvinceKunming, Yunnan, China
| | - Yun Xiao
- Department of Emergency Trauma Surgery, The First People’s Hospital of Yunnan ProvinceKunming, Yunnan, China
| | - Qishun Wu
- Department of Emergency Trauma Surgery, The First People’s Hospital of Yunnan ProvinceKunming, Yunnan, China
| | - Ling Liu
- Department of Emergency Trauma Surgery, The First People’s Hospital of Yunnan ProvinceKunming, Yunnan, China
| | - Caiguo Zhang
- Department of Dermatology, University of Colorado Anschutz Medical CampusAurora, CO, USA
| | - Xuekun Pan
- Department of Emergency Trauma Surgery, The First People’s Hospital of Yunnan ProvinceKunming, Yunnan, China
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Shi B, Ma C, Liu G, Guo Y. MiR-106a directly targets LIMK1 to inhibit proliferation and EMT of oral carcinoma cells. Cell Mol Biol Lett 2019; 24:1. [PMID: 30873211 PMCID: PMC6402160 DOI: 10.1186/s11658-018-0127-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023] Open
Abstract
Background LIM kinase 1 (LIMK1) expression levels are closely associated with microRNA (miRNA) processing. Higher levels of LIMK1 are reported during the progression of many cancers. Our study explored the interaction between LIMK1 and miR-106a in oral squamous cell carcinoma (OSCC). Methods Quantitative RT-PCR was performed to detect the levels of LIMK1 and miR-106a in OSCC tissues and cell lines. The rates of cell proliferation and epithelial-mesenchymal transition (EMT) were assessed to determine the biological functions of miR-106a and LIMK1 in OSCC cells. The mRNA and protein levels of LIMK1 were measured using quantitative RT-PCR and western blotting. Luciferase assays were performed to validate LIMK1 as an miR-106a target in OSCC cells. Results We found that the level of miR-106a significantly decreased and the expression of LIMK1 significantly increased in OSCC tissues and cell lines. There was a close association between these changes. Knockdown of LIMK1 significantly inhibited the proliferation and EMT of OSCC cells. The bioinformatics analysis predicted that LIMK1 is a potential target gene of miR-106a and the luciferase reporter assay confirmed that miR-106a could directly target LIMK1. Introduction of miR-106a to OSCC cells had similar effects to LIMK1 silencing. Overexpression of LIMK1 in OSCC cells partially reversed the inhibitory effects of the miR-106a mimic. Conclusion MiR-106a inhibited the cell proliferation and EMT of OSCC cells by directly decreasing LIMK1 expression.
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Affiliation(s)
- Bingxia Shi
- 1Oral and Maxillofacial Surgery, Cangzhou Central Hospital, No. 16 Xinhua West Road, Hebei, 061000 People's Republic of China
| | - Chao Ma
- 2Department of Medical Plastic Surgery, Cangzhou Central Hospital, Hebei, 061000 People's Republic of China
| | - Guolin Liu
- 1Oral and Maxillofacial Surgery, Cangzhou Central Hospital, No. 16 Xinhua West Road, Hebei, 061000 People's Republic of China
| | - Yanjun Guo
- 1Oral and Maxillofacial Surgery, Cangzhou Central Hospital, No. 16 Xinhua West Road, Hebei, 061000 People's Republic of China
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Amelot A, Mazel C. The Intervertebral Disc: Physiology and Pathology of a Brittle Joint. World Neurosurg 2018; 120:265-273. [PMID: 30218798 DOI: 10.1016/j.wneu.2018.09.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/02/2018] [Accepted: 09/04/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Intervertebral disc (ID) degeneration represents the number one cause for outpatient clinic visits worldwide. Mechanisms are discussed but not yet clearly established. Consequently, back pain management is commonly limited to symptomatic treatment therapies. OBJECTIVES The aim of this review is to evaluate major progress and to unravel the biology and pathology of ID discogenic pain. METHODS The design of this study is a systematic review. A literature search was conducted using Medline, EMBASE, and Google Scholar databases, with no time constraints to locate relevant literature. Significant articles (literature reviews, therapeutic essays, clinical-human-research studies, animal research, and laboratory research) on the intervertebral disc were identified and reviewed. The exclusion criteria were the following: case reports and clinical studies with <10 patients. RESULTS Through a dense review of the literature, the ID is deciphered and described as a fragile anatomic entity. For this systematic review, 132 studies were identified and 79 were retained. The main deterioration and alteration mechanisms that lead to the programmed death of the ID are summarized. In addition, the large variety of biological therapies that override surgical treatment are determined. CONCLUSIONS The degeneration mechanisms of the ID are well defined and decrypted. Although therapies have progressed, none has been effective. The regeneration of the ID remains highly challenging because of the complexity of its natural composition, microstructure, and mechanical properties.
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Affiliation(s)
- Aymeric Amelot
- Department of Neurosurgery, La Pitié Salpétrière Hospital, Paris, France; Sorbonne-University, UPMC, University Paris, Paris, France.
| | - Christian Mazel
- Department of Orthopedic Surgery, L'Institut Mutualiste Montsouris, Paris, France
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Li G, Tang X, Chen H, Sun W, Yuan F. miR-148a inhibits pro-inflammatory cytokines released by intervertebral disc cells by regulating the p38/MAPK pathway. Exp Ther Med 2018; 16:2665-2669. [PMID: 30186499 DOI: 10.3892/etm.2018.6516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 09/07/2017] [Indexed: 01/29/2023] Open
Abstract
The present study aimed to verify the expression and investigate the role of microRNA (miR)-148a in intervertebral disc degeneration (IDD) and explore the associated underlying mechanisms. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was performed to investigate levels of miR-148a in the peripheral blood mononuclear cells (PBMCs) of patients with IDD. To investigate the role of miR-148a in IDD, a stable miR-148a-overexpression/underexpression human nucleus pulposus (NP) cell line was generated by transfection with miR-148a mimic/inhibitor. Then, NP cells were treated with LPS (10 µM) to induce inflammation. The mRNA expression level of miR-148a in NP cells was determined by RT-qPCR and the expression levels of p38 and p-p38 were measured using western blotting. The mRNA expression and supernatant level of pro-inflammatory cytokines, tumor necrosis factor (TNF-α), interleukin (IL)-1β and IL-6, was evaluated by RT-qPCR and ELISA, respectively. The results indicated that miR-148a was significantly downregulated in the PBMCs of IDD patients compared with healthy controls. In vitro upregulation of miR-148a in LPS-stimulated NP cells, by transfection with miR-148a mimic, resulted in inhibition of p-p38 expression; however, inhibition of miR-148a led to overexpression of p-p38. Meanwhile, the production of pro-inflammatory cytokines (TNF-α, IL-1β and IL-6) was significantly reduced in miR-148a-overexpressing LPS-stimulated NP cells and significantly increased in miR-148a-underexpressing NP cells. In conclusion, miR-148a inhibits pro-inflammatory cytokines released by intervertebral disc cells via regulation of the p38/mitogen-activated protein kinase pathway.
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Affiliation(s)
- Guangfeng Li
- Graduate School of Xuzhou Medical College, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Xianye Tang
- Department of Spinal Surgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Hongliang Chen
- Department of Spinal Surgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Wei Sun
- Department of Spinal Surgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
| | - Feng Yuan
- Department of Spinal Surgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221000, P.R. China
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Tan H, Zhao L, Song R, Liu Y, Wang L. microRNA-665 promotes the proliferation and matrix degradation of nucleus pulposus through targeting GDF5 in intervertebral disc degeneration. J Cell Biochem 2018; 119:7218-7225. [PMID: 29761869 DOI: 10.1002/jcb.26888] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 03/21/2018] [Indexed: 12/30/2022]
Abstract
Growing evidences suggested that microRNAs (miRNAs) played important roles in the development of intervertebral disc degeneration (IDD). However, the expression level and function of miR-665 in IDD remain unknown. In this study, we showed that the expression level of miR-665 was upregulated in degenerative human NP samples. In addition, miR-665 expression level gradually increased with the exacerbation of disc degeneration grade. Moreover, miR-665 expression level was positively associated with the Pfirrmann grade. Ectopic expression of miR-665 promoted NP cell growth. Furthermore, miR-665 overexpression decreased aggrecan and Col II expression and ectopic expression of miR-665 increased MMP-3 and MMP-13 expression in NP cell. We identified growth differentiation factor 5 (GDF5) was a direct target gene of miR-665 in NP cell and enforced expression of miR-665 decreased GDF5 expression. Elevated expression of miR-665 enhanced NP cell proliferation and decreased aggrecan and Col II expression. In addition, ectopic expression of miR-665 increased MMP-3 and MMP-13 expression through inhibiting GDF5 expression in NP cells. These results suggested that dysregulated miR-665 expression might act an important role in the development of IDD.
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Affiliation(s)
- Hongyu Tan
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liang Zhao
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ruipeng Song
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yilin Liu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Limin Wang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Kang L, Yang C, Song Y, Zhao K, Liu W, Hua W, Wang K, Tu J, Li S, Yin H, Zhang Y. MicroRNA-494 promotes apoptosis and extracellular matrix degradation in degenerative human nucleus pulposus cells. Oncotarget 2018; 8:27868-27881. [PMID: 28427186 PMCID: PMC5438614 DOI: 10.18632/oncotarget.15838] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/20/2017] [Indexed: 12/19/2022] Open
Abstract
PURPOSE This study investigated the expression and function of the microRNA-494 in intervertebral disc degeneration (IDD). RESULTS MicroRNA-494 expression was upregulated during IDD progression; its overexpression increased the expression of ECM catabolic factors such as matrix metalloproteinase and A disintegrin and metalloproteinase with thrombospondin motif in NP cells while decreasing that of anabolic genes such as type II collagen and aggrecan; it also induced the apoptosis of NP cells, as determined by flow cytometry. These effects were reversed by microRNA-494 inhibitor treatment. SOX9 was identified as a target of negative regulation by microRNA-494. Promoter hypomethylation and NF-κB activation were associated with microRNA-494 upregulation in IDD. MATERIALS AND METHODS MicroRNA-494 expression in degenerative nucleus pulposus (NP) tissue was assessed by quantitative real-time PCR. The effect of microRNA-494 on extracellular matrix (ECM) metabolism and NP cell apoptosis was evaluated by transfection of microRNA-494 mimic or inhibitor. The regulation of SRY-related high mobility group box (SOX)9 expression by microRNA-494 was assessed with the luciferase reporter assay, and the methylation status of the microRNA-494 promoter was evaluated by methylation-specific PCR and bisulfite sequencing PCR. The role of activated nuclear factor (NF)-κB in the regulation of microRNA-494 expression was evaluated using specific inhibitors. CONCLUSIONS MicroRNA-494 promotes ECM degradation and apoptosis of degenerative human NP cells by directly targeting SOX9.
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Affiliation(s)
- Liang Kang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yu Song
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kangcheng Zhao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wei Liu
- Department of Orthopaedics, First Hospital of Wuhan, Wuhan 430022, China
| | - Wenbin Hua
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kun Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ji Tu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shuai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Huipeng Yin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yukun Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Understanding the molecular biology of intervertebral disc degeneration and potential gene therapy strategies for regeneration: a review. Gene Ther 2018; 25:67-82. [DOI: 10.1038/s41434-018-0004-0] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/30/2017] [Accepted: 01/03/2018] [Indexed: 12/13/2022]
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Lu A, Wang Z, Wang S. Role of miR-589-3p in human lumbar disc degeneration and its potential mechanism. Exp Ther Med 2017; 15:1616-1621. [PMID: 29434746 DOI: 10.3892/etm.2017.5593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 11/15/2017] [Indexed: 02/06/2023] Open
Abstract
The present study aimed to investigate the role of miR-589-3p in lumbar disc degeneration (LDD) and to explore the underlying mechanisms. Nucleus pulposus (NP) cells were stimulated with lipopolysaccharide (LPS) to simulate an in vitro model of intervertebral disc degeneration. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression level of microRNA (miR)-589-3p in the NP cells, and the results demonstrated that the increased expression of miR-589-3p in LPS stimulated NP cells compared with the control. To further investigate the role of miR-589-3p in LDD, a human NP cell line with high/low miR-589-3p expression was generated using miR-589-3p mimics/inhibitors. In addition, a human NP cell inflammation model was conducted by LPS (10 µM) treatment. Western blot analysis and RT-qPCR were performed for detection of associated genes and proteins. Protein levels of pro-inflammatory factors, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-6 were evaluated by ELISA. Flow cytometry was used for cell apoptosis determination. Furthermore, Targetscan was used to predict potential targets of miR-589-3p, and a dual luciferase reporter assay was used to verify the prediction. The findings verified that miR-589-3p was significantly upregulated in LDD. In vitro, miR-589-3p mimics/inhibitors significantly increased/reduced the production of TNF-α, IL-1β and IL-6 in LPS stimulated NP cells. Furthermore, miR-589-3p mimics/inhibitors significantly promoted/inhibited LPS stimulated NP cell apoptosis. MiR-589-3p mimics/inhibitors significantly repressed/enhanced type II collagen and aggrecan expression in LPS stimulated NP cells. In addition, it was demonstrated that mothers against decapentaplegic homolog (Smad) 4 was a direct target gene of miR-589-3p, and was negatively regulated by miR-589-3p in NP cells. In conclusion, miR-589-3p may function as a promoter in LDD development via the regulation of Smad4.
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Affiliation(s)
- Aiqing Lu
- Department of Orthopaedics, Zhangjiagang Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, Jiangsu 215600, P.R. China
| | - Zhirong Wang
- Department of Orthopaedics, Zhangjiagang Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, Jiangsu 215600, P.R. China
| | - Suchun Wang
- Department of Orthopaedics, Zhangjiagang Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, Jiangsu 215600, P.R. China
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Li Z, Yang B, Weng X, Tse G, Chan MTV, Wu WKK. Emerging roles of MicroRNAs in osteonecrosis of the femoral head. Cell Prolif 2017; 51. [PMID: 29131454 DOI: 10.1111/cpr.12405] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 08/28/2017] [Indexed: 12/14/2022] Open
Abstract
Osteonecrosis of the femoral head (ONFH) is one of the most common orthopaedic diseases. The exact pathogenic mechanism of ONFH is still unknown. MicroRNAs (miRNAs) are a class of non-coding RNAs that negatively modulate gene expression at post-transcriptional level. An increasing number of studies have shown that miRNAs play crucial roles in different physiological processes, including development, cell proliferation, differentiation and metabolism. Recently, multiple studies demonstrated that miRNAs are involved in the pathogenesis of ONFH. In this review, we summarize dysregulated miRNAs and their functions in ONFH. Furthermore, we discuss their potential clinical applications for diagnosis and treatment of ONFH.
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Affiliation(s)
- Zheng Li
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bo Yang
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xisheng Weng
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gary Tse
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong.,State Key Laboratory of Digestive Disease and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong
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MicroRNA-132 upregulation promotes matrix degradation in intervertebral disc degeneration. Exp Cell Res 2017; 359:39-49. [DOI: 10.1016/j.yexcr.2017.08.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 08/05/2017] [Indexed: 11/24/2022]
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49
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Tao B, Yi J, Huang C, Xu W, Qin C, Chen L, Chen J, Gao Y, Wang R. microRNA‑96 regulates the proliferation of nucleus pulposus cells by targeting ARID2/AKT signaling. Mol Med Rep 2017; 16:7553-7560. [PMID: 28944851 DOI: 10.3892/mmr.2017.7560] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 06/02/2017] [Indexed: 11/05/2022] Open
Abstract
The aberrant proliferation of nucleus pulposus (NP) cells has been reported to be implicated in the pathogenesis of intervertebral disc degeneration (IDD). Previous studies have demonstrated that microRNAs (miRNAs), which are a group of small noncoding RNAs, are critical regulators of cell proliferation in various pathologies. However, the role of miRNA‑96 (miR‑96) in the proliferation of NP cells remains to be determined. In the present study, reverse transcription‑quantitative polymerase chain reaction was used to investigate the expression of miR‑96 in NP tissues from patients with IDD and healthy tissues from patients with traumatic lumbar fracture as the control. A dual‑luciferase reporter assay was used to investigate whether AT‑rich interaction domain 2 (ARID2) may be a direct target gene for miR‑96. Furthermore, isolated NP cells from patients with IDD were transfected with miR‑96 mimics and ARID2‑targeting small interfering RNAs; cell proliferation, and the protein expression of Akt, phosphorylated Akt and ARID2 were examined, whereas the effects of an Akt inhibitor on NP cell proliferation were also evaluated. The present results demonstrated that miR‑96 expression was significantly upregulated in IDD samples, and the level of miR‑96 expression was positively associated with disc degeneration grade, which was evaluated by a modified Pfirrmann grading system. In addition, the current study identified ARID2 as a direct gene target of miR‑96. Furthermore, it was demonstrated that ARID2 mRNA expression was inversely correlated with the expression of miR‑96 in NP tissues. In addition, miR‑96 overexpression promoted NP cell proliferation and induced Akt phosphorylation, which led to increased cyclin D1 translation. Notably, overexpression of ARID2 or treatment with an Akt inhibitor decreased the effect of miR‑96 on NP cell proliferation. In conclusion, the results of the present study indicate that miR‑96 may promote the proliferation of human degenerated NP cells by targeting ARID2 via activation of the Akt pathway, and potentially serves as a therapeutic target for IDD.
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Affiliation(s)
- Bo Tao
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Jiaoyu Yi
- Department of Emergency Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Changzhao Huang
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Wang Xu
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Chao Qin
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Lei Chen
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Jincai Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
| | - Yan Gao
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Ruiying Wang
- Department of Orthopedic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
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Cao Z, Chen L. Inhibition of miR-27a suppresses the inflammatory response via the p38/MAPK pathway in intervertebral disc cells. Exp Ther Med 2017; 14:4572-4578. [PMID: 29067127 DOI: 10.3892/etm.2017.5053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 04/07/2017] [Indexed: 12/12/2022] Open
Abstract
The current study aimed to investigate the role of miR-27a in intervertebral disc degeneration (IDD) and to examine the underlying mechanisms. Quantitative polymerase chain reaction (qPCR) was performed to detect the expression level of miR-27a in the nucleus pulposus (NP) tissues of patients with IDD, and the results revealed an increasing expression of miR-27a in IDD compared with the control. To further investigate the role of miR-27a in IDD, a stable human NP cell line with low miR-27a expression was generated by transfecting cells with a lentiviral antigomiR-27a inhibitor. In addition, a human NP cell inflammation model was established by lipopolysaccharide (LPS; 10 µM) stimulation. The miR-27a expression in NP cells was determined by qPCR, while the expression of its target proteins; p-p38 and nuclear factor (NF-κB) was measured by western blot analysis. Furthermore, the mRNA and protein expression levels of proinflammatory factors, including interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α), were also evaluated by qPCR and ELISA, respectively. The current results confirmed that miR-27a was significantly upregulated in IDD. In vitro, downregulation of miR-27a in LPS-stimulated NP cells by transfection with the miR-27a inhibitor resulted in suppression of p-p38 and NF-κB expression levels. Furthermore, the production of the proinflammatory factors IL-1β, IL-6 and TNF-α was significantly reduced in LPS-stimulated NP cells with downregulated miR-27a. In conclusion, miR-27a may function as a promoter in IDD development, while inhibition of miR-27a may suppress proinflammatory factors released by intervertebral disc cells by regulating the p38/mitogen-activated protein kinase (MAPK) signaling pathway.
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Affiliation(s)
- Zhenguo Cao
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China.,Department of Orthopaedic Surgery, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou 221006, P.R. China
| | - Liang Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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