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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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2
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Li JL, Han YB, Yang GY, Tian M, Shi CS, Tian D. Inflammation in Hernia and the epigenetic control. Semin Cell Dev Biol 2024; 154:334-339. [PMID: 37080853 DOI: 10.1016/j.semcdb.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/13/2023] [Accepted: 04/01/2023] [Indexed: 04/22/2023]
Abstract
Inflammation is much more intrinsic to hernia then is what is generally appreciated. The occurrence of hernias is associated with swelling, stress and inflammation. Surgery remains an important intervention to treat hernias and for many years, post-surgical levels of inflammatory cytokines have been evaluated to compare the different strategies for their comparative advantages. All surgical procedures elicit some sort of inflammatory response and moreover the meshes used for hernia repair are also associated with elevated inflammatory response, although some favor predominantly a pro-inflammatory response while the other meshes favor anti-inflammatory response. An estimated more than 90% of hernia repairs involve some meshes with polypropylene considered as the gold standard. Efforts are underway to modulate polypropylene meshes associated inflammation through use of alternative materials as well as modifications to polypropylene meshes themselves. In the last one decade, miRNAs have entered hernia research and the data on a role of miRNAs in different hernias is slowly emerging, providing the first evidence of epigenetics in hernia. Some reports are connecting miRNAs with inflammation in hernia. All these aspects, such as, surgery-related to mesh-related inflammation as well as miRNA-related inflammation, are discussed in this article to present an up-to-date information on the topic.
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Affiliation(s)
- Jin-Long Li
- Department of Gastrointestinal Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Ying-Bo Han
- Department of Gastrointestinal Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Gui-Yun Yang
- Department of Operating Room, The Second Hospital of Jilin University, Changchun, China
| | - Miao Tian
- Department of Gynecology and Obstetrics, The Second Hospital of Jilin University, Changchun, China
| | - Chang-Sai Shi
- Department of Gastrointestinal Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Dan Tian
- Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, China.
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Nianyong Y, Li G. Comprehensive analysis reveals the involvement of hsa_circ_0037858/miR-5000- 3p/FMR1 axis in malignant metastasis of clear cell renal cell carcinoma. Aging (Albany NY) 2023; 15:5399-5411. [PMID: 37379126 PMCID: PMC10333075 DOI: 10.18632/aging.204790] [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: 02/06/2023] [Accepted: 05/01/2023] [Indexed: 06/30/2023]
Abstract
Clear cell renal cell carcinoma (ccRCC) is a heterogenous tumor with high metastatic potential. Circular RNAs (circRNAs) play key roles in cancer initiation and progression. However, the knowledge of circRNA in ccRCC metastasis is still inadequate. In this study, a series of in silico analyses and experimental validation were employed. The differentially expressed circRNAs (DECs) between ccRCC and normal or metastatic ccRCC tissues were screened out using GEO2R. Hsa_circ_0037858 was identified as the most potential circRNA related to ccRCC metastasis, which was significantly downregulated in ccRCC compared with normal and was also markedly decreased in metastatic ccRCC compared with primary ccRCC. The structural pattern of hsa_circ_0037858 presented several microRNA response elements and four binding miRNAs of hsa_circ_0037858, consisting of miR-3064-5p, miR-6504-5p, miR-345-5p and miR-5000-3p, were predicted using CSCD and starBase. Among them, miR-5000-3p with high expression and statistical diagnostic value was considered as the most potential binding miRNA of hsa_circ_0037858. Then, protein-protein interaction analysis revealed a close linkage among the target genes of miR-5000-3p and the top 20 hub genes among them were identified. Based on node degree, MYC, RHOA, NCL, FMR1 and AGO1 were ranked as the top 5 hub genes. FMR1 was identified as the most potential downstream gene of hsa_circ_0037858/miR-5000-3p axis according to expression, prognosis and correlation analysis. Moreover, hsa_circ_0037858 suppressed in vitro metastasis and enhanced FMR1 expression in ccRCC, which could be markedly reversed by introduction of miR-5000-3p overexpression. Collectively, we elucidated a potential hsa_circ_0037858/miR-5000-3p/FMR1 axis involved in ccRCC metastasis.
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Affiliation(s)
- Yuan Nianyong
- Department of Hepatobiliary and Pancreatic Surgery, The First People’s Hospital of Fuyang, Hangzhou 311400, China
| | - Guowei Li
- Department of Hepatobiliary and Pancreatic Surgery, The First People’s Hospital of Fuyang, Hangzhou 311400, China
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Zhang J, Mou Y, Li H, Shen H, Song J, Li Q. LINC00638 promotes the progression of non-small cell lung cancer by regulating the miR-541-3p/IRS1/PI3K/Akt axis. Heliyon 2023; 9:e16999. [PMID: 37408901 PMCID: PMC10319234 DOI: 10.1016/j.heliyon.2023.e16999] [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: 12/28/2022] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 07/07/2023] Open
Abstract
Background Preceding works reveal the function of long non-coding RNAs (abbreviated to lncRNAs) during non-small cell lung cancer (NSCLC) evolvement. We explored the profile and biological functions of the lncRNA LINC00638 in NSCLC. Methods Reverse transcription-quantitative PCR examined LINC00638 level in NSCLC and corresponding non-tumor tissues, human normal lung epithelial cells BEAS-2B, and NSCLC cells (NCI-H460, HCC-827, A549, H1299, H1975, H460). The gain- and loss-of-function assay of LINC00638 ascertained its function in modulating the proliferation, apoptosis, and invasion of NSCLC cells (HCC-827 and H460). Bioinformatics analysis investigated the underlying mechanisms. Dual luciferase reporter gene and RNA immunoprecipitation (RIP) checked the interactions between LINC00638 and microRNA (miR)-541-3p, miR-541-3p and insulin receptor substrate 1 (IRS1). Results LINC00638 was upregulated in NSCLC tissues by contrast to the profiles found in the corresponding non-tumor normal tissues, as well as in NSCLC cells vis-à-vis BEAS-2B cells. LINC00638 upregulation pertained to the poorer survival rates of NSCLC patients. Overexpressing LINC00638 augmented NSCLC cells' proliferation, growth, migration, and invasion but inhibited their apoptosis, while down-regulating LINC00638 led to the opposite. miR-541-3p might be an underlying target of LINC00638, which targeted IRS1, inhibited NSCLC progression, and reversed the carcinogenic effects of LINC00638. Mechanistically, LINC00638/miR-541-3p regulated the IRS1/phosphoinositide 3-kinase (PI3K)/Akt signaling pathway. Repressing IRS1/2 using its inhibitor NT157 repressed LINC00638-mediated oncogenic effects. Conclusion LINC00638 may function as an oncogene in NSCLC by modulating the miR-541-3p/IRS1/PI3K/Akt axis.
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Affiliation(s)
- Juan Zhang
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
- Institute of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
| | - Yanhua Mou
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
- Institute of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
| | - Hui Li
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
- Institute of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
| | - Hui Shen
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
- Institute of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
| | - Jun Song
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
- Institute of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
| | - Qingfeng Li
- Department of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
- Institute of Oncology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science Hubei University of Arts and Science, Xiangyang 441021, Hubei, China
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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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6
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Kim J. Differentially Expressed Circular RNAs in Degenerative Diseases Related to Low Back Pain: Potential of Circular RNAs as Biomarkers. Genet Test Mol Biomarkers 2022; 26:51-58. [PMID: 35166604 DOI: 10.1089/gtmb.2021.0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Low back pain (LBP) is a main cause of disability around the world. Nevertheless, given the complex pathophysiology of LBP, the etiological diagnosis of LBP is a challenging process. Identifying appropriate biomarkers and/or therapeutic targets is still crucial for LBP research. There has been a growing interest in molecular biomarkers of LBP-related degenerative diseases. Recently, circular RNAs (circRNAs) have received great attention as microRNA (miRNA) sponges that inhibit normal miRNA activity. Due to their abundance and stability, circRNAs are considered as potential diagnostic biomarkers. Indeed, it has been reported that circulating or tissue-specific circRNAs can be used for diagnosing human diseases, including cancers, neurological diseases, and inflammatory diseases. Also of note, from 2015, research on circRNAs involved in LBP-related diseases is very active. Moreover, specific roles of some of the differentially expressed circRNAs have been demonstrated. Thus, the putative involvement of circRNAs in LBP-related diseases may suggest that some of the dysregulated circRNAs may have the potential to serve as therapeutic targets and/or diagnostic biomarkers for LBP. This review summarizes the current progress on differentially expressed circRNAs in diseases related to LBP.
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Affiliation(s)
- Jaehee Kim
- Department of Alternative Medicine, Graduate School of Alternative Medicine, Kyonggi University (Seoul Campus), Seoul, Republic of Korea
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The Roles of circRNAs in Intervertebral Disc Degeneration: Inflammation, Extracellular Matrix Metabolism, and Apoptosis. Anal Cell Pathol (Amst) 2022; 2022:9550499. [PMID: 35186669 PMCID: PMC8856834 DOI: 10.1155/2022/9550499] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 01/19/2022] [Indexed: 12/15/2022] Open
Abstract
Low back pain (LBP) is seriously harmful to human health and produces heavy economic burden. And most scholars hold that intervertebral disc degeneration (IDD) is the primary cause of LBP. With the study of IDD, aberrant expression of gene has become an important pathogenic factor of IDD. Circular RNAs (circRNAs), as a kind of noncoding RNA (ncRNA), participate in the regulation of genetic transcription and translation and further affect the expression of inflammatory cytokine, metabolism of extracellular matrix (ECM), the proliferation and apoptosis of cells, etc. Therefore, maybe it will become a new therapeutic target for IDD. At present, our understanding of the mechanism of circRNAs in IDD is limited. The purpose of this review is to summarize the mechanism and related signaling pathways of circRNAs in IDD reported in the past. Particularly, the roles of circRNAs in inflammation, ECM metabolism, and apoptosis are emphasized.
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Mechanism of Long Noncoding RNA HOTAIR in Nucleus Pulposus Cell Autophagy and Apoptosis in Intervertebral Disc Degeneration. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:8504601. [PMID: 35027936 PMCID: PMC8752263 DOI: 10.1155/2022/8504601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/03/2021] [Accepted: 11/22/2021] [Indexed: 12/11/2022]
Abstract
Objective Intervertebral disc degeneration (IDD) contributes to cervical and lumbar diseases. Long noncoding RNAs (lncRNAs) are implicated in IDD. This study explored the mechanism of lncRNA HOTAIR in IDD. Methods Normal and degenerative nucleus pulposus (NP) cells were isolated from NP tissues obtained in intervertebral disc surgery. Cell morphology was observed by immunocytochemistry staining and toluidine blue staining. NP cell markers were detected by RT-qPCR. Proliferation was detected by MTT assay. Autophagy-related proteins were detected by Western blot. Autophagosome was observed by monodansylcadaverine fluorescence staining. Apoptosis was detected by TUNEL staining and flow cytometry. si-HOTAIR and/or miR-148a inhibitor was introduced into degenerative NP cells. Binding relationships among HOTAIR, miR-148a, and PTEN were predicted and verified by dual-luciferase reporter assay and RNA pull-down. Finally, IDD rat models were established. Rat caudal intervertebral discs were assessed by HE staining. Expressions of HOTAIR, miR-148a, and PTEN were determined by RT-qPCR. Results HOTAIR was highly expressed in degenerative NP cells (p < 0.05). si-HOTAIR inhibited degenerative NP cell apoptosis and autophagy (p < 0.05). HOTAIR upregulated PTEN as a sponge of miR-148a. miR-148a was poorly expressed in degenerative NP cells. miR-148a deficiency partially reversed the inhibition of si-HOTAIR on degenerative NP cell autophagy and apoptosis (all p < 0.05). In vivo assay confirmed that si-HOTAIR impeded autophagy and apoptosis in intervertebral disc tissues, thus improving pathological injury in IDD rats (all p < 0.05). Conclusion LncRNA HOTAIR promoted NP cell autophagy and apoptosis via promoting PTEN expression as a ceRNA of miR-148a in IDD.
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Yang W, Huang XD, Zhang T, Zhou YB, Zou YC, Zhang J. LncRNA MIR155HG functions as a ceRNA of miR-223-3p to promote cell pyroptosis in human degenerative NP cells. Clin Exp Immunol 2021; 207:241-252. [PMID: 35020847 PMCID: PMC8982970 DOI: 10.1093/cei/uxab030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/19/2021] [Accepted: 11/26/2021] [Indexed: 02/03/2023] Open
Abstract
Nucleus pulposus (NP) cell pyroptosis plays a critical role in the pathogenesis of intervertebral disk degeneration (IDD). MIR155 host gene (MIR155HG) is a long non-coding RNA with pro-inflammatory activity. However, very little is known about its role in NP cell pyroptosis. This study aimed to observe the impact of MIR155HG on cell pyroptosis and to explore the underlying mechanism in human degenerative NP cells. Our results demonstrated that MIR155HG expression was significantly increased in human degenerative NP tissue samples and showed a positive correlation with Pfirrmann score. Overexpression of MIR155HG through a lentiviral vector decreased miR-223-3p levels, up-regulated NLRP3 expression and induced cell pyroptosis in human degenerative NP cells. A ceRNA action mode was identified among MIR155HG, miR-223-3p, and NLRP3. The stimulatory effect of MIR155HG on human degenerative NP cell pyroptosis was significantly reversed by pretreatment with miR-223-3p mimic or NLRP3 siRNA. In summary, these data suggest that MIR155HG sponges miR-223-3p to promote NLRP3 expression, leading to induction of cell pyroptosis in human degenerative NP cells. Targeting MIR155HG could be a novel and promising strategy to slow down the progression of IDD.
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Affiliation(s)
- Wei Yang
- The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Xu-Dong Huang
- The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Tao Zhang
- The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - You-Bin Zhou
- The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Yong-Cheng Zou
- The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Jian Zhang
- The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, China,Correspondence: Jian Zhang, The First Affiliated Hospital, Orthopedic Center, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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10
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Qi F, Du X, Zhao Z, Zhang D, Huang M, Bai Y, Yang B, Qin W, Xia J. Tumor Mutation Burden-Associated LINC00638/miR-4732-3p/ULBP1 Axis Promotes Immune Escape via PD-L1 in Hepatocellular Carcinoma. Front Oncol 2021; 11:729340. [PMID: 34568062 PMCID: PMC8456090 DOI: 10.3389/fonc.2021.729340] [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] [Received: 06/23/2021] [Accepted: 08/24/2021] [Indexed: 12/11/2022] Open
Abstract
Tumor mutation burden (TMB) is associated with immune infiltration, while its underlying mechanism in hepatocellular carcinoma (HCC) remains unclear. A long noncoding RNA (lncRNA)-related competitive endogenous RNA (ceRNA) network can regulate various tumor behaviors, and research about its correlation with TMB and immune infiltration is warranted. Data were downloaded from TCGA and ArrayExpress databases. Cox analysis and machine learning algorithms were employed to establish a lncRNA-based prognostic model for HCC. We then developed a nomogram model to predict overall survival and odds of death for HCC patients. The association of this prognostic model with TMB and immune infiltration was also analyzed. In addition, a ceRNA network was constructed by using DIANA-LncBasev2 and the starBase database and verified by luciferase reporter and colocalization analysis. Multiplex immunofluorescence was applied to determine the correlation between ULBP1 and PD-L1. An eight-lncRNA (SLC25A30-AS1, HPN-AS1, LINC00607, USP2-AS1, HCG20, LINC00638, MKLN1-AS and LINC00652) prognostic score model was constructed for HCC, which was highly associated with TMB and immune infiltration. Next, we constructed a ceRNA network, LINC00638/miR-4732-3p/ULBP1, that may be responsible for NK cell infiltration in HCC with high TMB. However, patients with high ULBP1 possessed a poorer prognosis. Using multiplex immunofluorescence, we found a significant correlation between ULBP1 and PD-L1 in HCC, and patients with high ULBP1 and PD-L1 had the worst prognosis. In brief, the eight-lncRNA model is a reliable tool to predict the prognosis of HCC patients. The LINC00638/miR-4732-3p/ULBP1 axis may regulate immune escape via PD-L1 in HCC with high TMB.
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Affiliation(s)
- Feng Qi
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Oncology, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Xiaojing Du
- Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhiying Zhao
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ding Zhang
- The Medical Department, 3D Medicines Inc., Shanghai, China
| | - Mengli Huang
- The Medical Department, 3D Medicines Inc., Shanghai, China
| | - Yuezong Bai
- The Medical Department, 3D Medicines Inc., Shanghai, China
| | - Biwei Yang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenxing Qin
- Department of Oncology, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Jinglin Xia
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China.,The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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11
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Chen Z, Zhang W, Deng M, Li Y, Zhou Y. CircGLCE alleviates intervertebral disc degeneration by regulating apoptosis and matrix degradation through the targeting of miR-587/STAP1. Aging (Albany NY) 2020; 12:21971-21991. [PMID: 33159017 PMCID: PMC7695369 DOI: 10.18632/aging.104035] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 08/17/2020] [Indexed: 01/07/2023]
Abstract
The purpose of this study was to identify a specific circular RNA and to investigate its regulatory mechanism in intervertebral disc degeneration (IDD). CircGLCE was selected after microarray analyses and was further analysed by RT-qPCR and FISH. CircGLCE was found to stably exist in the cytoplasm of nucleus pulposus (NP) cells. It was downregulated in IDD. After silencing CircGLCE, its function was assessed with RT-qPCR, immunofluorescence analysis and flow cytometry. Knockdown of CircGLCE promoted apoptosis and induced the expression of matrix-degrading enzymes in NP cells. CircGLCE served as a miR-587 sponge in NP cells. Inhibiting miR-587 counteracted the IDD-enhancing effect caused by silencing CircGLCE. STAP1 served as the miRNA target that mediated the functions of miR-587. In an IDD mouse model, the in vivo effects of overexpressing CircGLCE on IDD were confirmed by imaging techniques, TUNEL staining, FISH, western blotting, H&E staining and immunohistochemistry. Thus, CircGLCE attenuates IDD by inhibiting the apoptosis of NP cells and ECM degradation through the targeting of miR-587/STAP1. CircGLCE may be a potential therapeutic target for IDD treatments.
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Affiliation(s)
- Zhonghui Chen
- Orthopaedic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Weibing Zhang
- Orthopaedic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Ming Deng
- Orthopaedic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yaming Li
- Orthopaedic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yan Zhou
- Orthopaedic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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12
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Yang L, Sun H, Liu X, Chen J, Tian Z, Xu J, Xiang B, Qin B. Circular RNA hsa_circ_0004277 contributes to malignant phenotype of colorectal cancer by sponging miR-512-5p to upregulate the expression of PTMA. J Cell Physiol 2020. [PMID: 31960446 DOI: 10.1002/jcp.29484] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 01/07/2020] [Indexed: 12/14/2022]
Abstract
In recent years, extensive reports have been published concerning the molecular mechanism underlying the occurrence and progression of colorectal cancer. Circular RNAs (circRNAs) have been identified as important modulators in the biological processes of colorectal cancer. Microarray analysis unveiled that differential circ-0004277 expression was identified in tissue samples of colorectal cancer. High circ-0004277 expression was then verified in tissue samples and cell lines of colorectal cancer via qRT-PCR. Kaplan-Meier analysis was used for identifying the association between circ-0004277 expression and the overall survival rate of colorectal cancer patients. A relationship existed between higher circ-0004277 expression and decreased overall survival rate of colorectal cancer patients. From a functional perspective, circ-0004277 knockdown accelerated cell apoptosis and restrained cell proliferation of colorectal cancer. From mechanistic perspective, circ-0004277 upregulated PTMA by sponging miR-512-5p. Rescue assay was used for verifying the roles of the circ-0004277-miR-512-5p-PTMA axis. Both miR-512-5p and PTMA participated in circ-0004277-mediated colorectal cancer cell proliferation based on experiments. In summary, our study showed that circ-0004277 promoted the proliferation of colorectal cancer cells as a miR-512-5p sponge to upregulate the PTMA expression.
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Affiliation(s)
- Lu Yang
- Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China
| | - Hongwei Sun
- Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China
| | - Xing Liu
- Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China
| | - Jinxin Chen
- Department of Gynecology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China
| | - Zhimin Tian
- Scientific Research and Education Department, The People's Hospital of Liaoning Province, Shenyang, China
| | - Jia Xu
- Cardiovascular Department, The People's Hospital of Liaoning Province, Shenyang, China
| | - Bowen Xiang
- Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China
| | - Baoli Qin
- Medical Oncology Department of Gastrointestinal Cancer, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China
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13
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Ma X, Xiang F, Pei Z, Miao J, Wu P, Song X, Li Y, Zhang Y. Circ-Smad5 retards the G1/S transition of cell cycle via inhibiting the activity of wnt/lef/cyclind1 signaling in JB6 cells. Genes Dis 2020; 8:364-372. [PMID: 33997183 PMCID: PMC8093577 DOI: 10.1016/j.gendis.2020.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 01/01/2020] [Accepted: 01/03/2020] [Indexed: 11/29/2022] Open
Abstract
Circular RNAs are a large class of noncoding RNAs. Smad5 functions in cell differentiation, cell proliferation and metastasis. It has been reported that lnc-Smad5 can inhibit the proliferation of diffuse large B cell lymphoma. However, the function of circ-Smad5 has not yet been reported. Lentivirus vectors were constructed to establish circ-Smad5 upregulated and circ-Smad5 downregulated cell models. A CCK-8 assay was used to detect the proliferation of JB6 cells. FACS was used to analyze the cell cycle in the cell models. Western blot, immunofluorescence staining and TOP/FOP flash dual luciferase activity assays were used to determine the activity of the Wnt signaling pathway. The results revealed that the expression level of circ-Smad5 in JB6 cells was significantly lower than the expression level of linearized-Smad5. Compared with the control group, the percentage of S phase cells and the expression level of cyclin D1 protein were significantly higher in the sh-circ-Smad5 group. In the sh-circ-Smad5 group, β-catenin and LEF-1 were significantly increased, p-β-catenin was significantly decreased, and the relative activity of the TOP/FOP reporter gene was higher compared to the control group levels. These phenomena could be reversed by treating with Wnt signaling inhibitor PNU-74654. We conclude that the circ-Smad5 retards the proliferation and the cell cycle progression of JB6 cells. Thus, circ-Smad5 may function by inhibiting the activation of Wnt/β-catenin/Lef 1 signaling, which inhibits the expression of cyclin D1. To the best of our knowledge, we are the first to report the function of circ-Smad5.
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Affiliation(s)
- Xiaogen Ma
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, PR China
- Department of Cell Biology, Army Medical University, Chongqing, 400038, PR China
| | - Fei Xiang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing, 400038, PR China
| | - Zhuo Pei
- Department of Cell Biology, Army Medical University, Chongqing, 400038, PR China
| | - Jiafeng Miao
- Department of Cell Biology, Army Medical University, Chongqing, 400038, PR China
| | - Pan Wu
- Department of Cell Biology, Army Medical University, Chongqing, 400038, PR China
| | - Xiaofeng Song
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, PR China
| | - Yuhong Li
- Department of Cell Biology, Army Medical University, Chongqing, 400038, PR China
- Corresponding author. Department of Cell Biology, Army Medical University, Gaotanyan street No. 30, Shapingba, 400038, Chongqing, China.
| | - Yiming Zhang
- Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, Chongqing, 400037, PR China
- Corresponding author. Department of Plastic and Cosmetic Surgery, Xinqiao Hospital, Army Medical University, 400037, Chongqing, China.
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14
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Li Z, Chen X, Xu D, Li S, Chan MTV, Wu WKK. Circular RNAs in nucleus pulposus cell function and intervertebral disc degeneration. Cell Prolif 2019; 52:e12704. [PMID: 31621141 PMCID: PMC6869348 DOI: 10.1111/cpr.12704] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/10/2019] [Accepted: 09/23/2019] [Indexed: 12/13/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is a common cause of low back pain, which inflicts more global disability than any other condition. Although IDD was deemed to be a natural process that comes with ageing, a growing body of evidence suggested that both genetic and environmental factors could modify the development of IDD. In this connection, aberrant function of nucleus pulposus cells has been implicated in IDD pathogenesis. Circular RNAs are a novel class of endogenous non-coding RNAs that play crucial regulatory roles in diverse cellular processes. Recently, deregulation of circRNAs in nucleus pulposus cells was found to functionally participate in IDD development. In this review, we summarize the current knowledge regarding the deregulation of circRNAs in IDD in relation to their actions on nucleus pulposus cell functions, including cell proliferation, apoptosis and extracellular matrix synthesis/degradation. The potential clinical utilities of circRNAs as therapeutic targets for the management of IDD are also discussed.
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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
| | - Xin Chen
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Derong Xu
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shugang Li
- 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, Hong Kong
| | - William K K Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, Hong Kong.,State Key Laboratory of Digestive Diseases, Centre for Gut Microbiota Research, Institute of Digestive Diseases and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
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