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DeSouza NR, Nielsen KJ, Jarboe T, Carnazza M, Quaranto D, Kopec K, Suriano R, Islam HK, Tiwari RK, Geliebter J. Dysregulated Expression Patterns of Circular RNAs in Cancer: Uncovering Molecular Mechanisms and Biomarker Potential. Biomolecules 2024; 14:384. [PMID: 38672402 PMCID: PMC11048371 DOI: 10.3390/biom14040384] [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: 12/27/2023] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 04/28/2024] Open
Abstract
Circular RNAs (circRNAs) are stable, enclosed, non-coding RNA molecules with dynamic regulatory propensity. Their biogenesis involves a back-splicing process, forming a highly stable and operational RNA molecule. Dysregulated circRNA expression can drive carcinogenic and tumorigenic transformation through the orchestration of epigenetic modifications via extensive RNA and protein-binding domains. These multi-ranged functional capabilities have unveiled extensive identification of previously unknown molecular and cellular patterns of cancer cells. Reliable circRNA expression patterns can aid in early disease detection and provide criteria for genome-specific personalized medicine. Studies described in this review have revealed the novelty of circRNAs and their biological ss as prognostic and diagnostic biomarkers.
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Affiliation(s)
- Nicole R. DeSouza
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Kate J. Nielsen
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Tara Jarboe
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Michelle Carnazza
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Danielle Quaranto
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Kaci Kopec
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Robert Suriano
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
- Division of Natural Sciences, University of Mount Saint Vincent, Bronx, NY 10471, USA
| | - Humayun K. Islam
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
| | - Raj K. Tiwari
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
- Department of Otolaryngology, New York Medical College, Valhalla, NY 10595, USA
| | - Jan Geliebter
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA; (N.R.D.)
- Department of Otolaryngology, New York Medical College, Valhalla, NY 10595, USA
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Lu J, Zhou Y, Chen Z, Jiang H, Li J, Dou G. Circ_0000419 acts as a tumor suppressor in gastric cancer development via regulating miR-300/RGMB axis. Int J Clin Oncol 2023; 28:1475-1485. [PMID: 37470948 DOI: 10.1007/s10147-023-02379-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 06/25/2023] [Indexed: 07/21/2023]
Abstract
OBJECTIVE Dysregulated circular RNAs (circRNAs) have been verified to function in the development of gastric cancer (GC). The current study was designed to investigate the role of circ_0000419 in GC progression, and the potential mechanistic pathway. METHODS Relative expression of circ_0000419, microRNA-300 (miR-300) and Repulsive Guidance Molecule B (RGMB) was analyzed by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) assay. Cell metastasis, including migration and invasion, was assessed by wound healing and Transwell assays. Glucose consumption and lactate production were examined using kits. The association between miR-300 and circ_0000419 or RGMB was validated by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assays. Role of circ_0000419 in vivo was determined by xenograft experiment. RESULTS Circ_0000419 and RGMB were downregulated, while miR-300 was upregulated in GC tissues and cells. Gain of circ_0000419 inhibited migration, invasion and glycolysis in GC cells, which was attenuated by introduction of miR-300 or silencing of RGMB. Circ_0000419 sponged miR-300, and RGMB was direct target of miR-300. Circ_0000419 overexpression could block GC tumor growth in vivo. CONCLUSION Circ_0000419 inhibited GC cell migration, invasion and glycolysis through regulation of miR-300/RGMB axis, at least in part, affording a molecular target for GC treatment.
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Affiliation(s)
- Jiajun Lu
- Department of Gastrointestinal Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, No. 1882 Zhonghuan South Road, Jiaxing, Zhejiang, China
| | - Yuan Zhou
- Department of Gastrointestinal Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, No. 1882 Zhonghuan South Road, Jiaxing, Zhejiang, China
| | - Zhiheng Chen
- Department of Gastrointestinal Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, No. 1882 Zhonghuan South Road, Jiaxing, Zhejiang, China
| | - Honggang Jiang
- Department of Gastrointestinal Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, No. 1882 Zhonghuan South Road, Jiaxing, Zhejiang, China
| | - Jin Li
- Department of Gastrointestinal Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, No. 1882 Zhonghuan South Road, Jiaxing, Zhejiang, China
| | - Guangjian Dou
- Department of Gastrointestinal Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, No. 1882 Zhonghuan South Road, Jiaxing, Zhejiang, China.
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Li W, Xie L, Wang L, Lin F. CircRIMS promotes cerebral ischemia-reperfusion injury through increasing apoptosis and targeting the miR-96-5p/JAK/STAT1 axis. Brain Inj 2023; 37:1235-1244. [PMID: 37515578 DOI: 10.1080/02699052.2023.2237890] [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: 12/21/2021] [Revised: 04/07/2023] [Accepted: 06/12/2023] [Indexed: 07/31/2023]
Abstract
OBJECTIVE This study aims to explore the function of circRIMS in cerebral ischemia/reperfusion (CIR) and its regulatory mechanism. METHOD The expression of the circRIMS was examined in GEO chip data and validated by qRT-PCR analysis. A middle cerebral artery occlusion/repression (MCAO/R) model was developed using C57BL/6J mice. Starbase and circinteractome were employed to identify the target miRNA and mRNA. The result was confirmed by dual-luciferase reporter assay, and biotinylated RNA-pulldown assay. The cell viability and apoptosis were confirmed through CCK-8 and flow cytometry assay. RESULTS This study revealed that circRIMS expression was upregulated in MCAO mice model and OGD/RX-simulated cell model. Knockdown circRIMS demonstrated the functional of circRIMS in increasing cell viability, reducing apoptosis, LDH activity and inflammatory factors secretion in OGD/RX-simulated CIR injury in vitro. Additionally, miR-96-5p was identified as a target of circRIMS, while the STAT1 gene is a downstream gene of miR-96-5p, and JAK was also considered to be a downstream gene of the JAK-STAT pathway. Furthermore, inhibition of miR-96-5p or overexpression of STAT1 promoted the progression of CIR injury by elevating apoptosis, reducing cell viability, and increasing the secretion of inflammatory cytokines. CONCLUSION CircRIMS contributes to the progression of CIR injury via regulating miR-96-5p/JAK/STAT1 axis.
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Affiliation(s)
- Wei Li
- Department of Rehabilitation Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Lin Xie
- Department of Rehabilitation Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Lisha Wang
- Department of Neurology Intensive Care Unit, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Faliang Lin
- Department of Rehabilitation Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong, China
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Nokkeaw A, Thamjamrassri P, Tangkijvanich P, Ariyachet C. Regulatory Functions and Mechanisms of Circular RNAs in Hepatic Stellate Cell Activation and Liver Fibrosis. Cells 2023; 12:cells12030378. [PMID: 36766720 PMCID: PMC9913196 DOI: 10.3390/cells12030378] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/22/2023] Open
Abstract
Chronic liver injury induces the activation of hepatic stellate cells (HSCs) into myofibroblasts, which produce excessive amounts of extracellular matrix (ECM), resulting in tissue fibrosis. If the injury persists, these fibrous scars could be permanent and disrupt liver architecture and function. Currently, effective anti-fibrotic therapies are lacking; hence, understanding molecular mechanisms that control HSC activation could hold a key to the development of new treatments. Recently, emerging studies have revealed roles of circular RNAs (circRNAs), a class of non-coding RNAs that was initially assumed to be the result of splicing errors, as new regulators in HSC activation. These circRNAs can modulate the activity of microRNAs (miRNAs) and their interacting protein partners involved in regulating fibrogenic signaling cascades. In this review, we will summarize the current knowledge of this class of non-coding RNAs for their molecular function in HSC activation and liver fibrosis progression.
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Affiliation(s)
- Archittapon Nokkeaw
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Medical Biochemistry Program, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Pannathon Thamjamrassri
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Medical Biochemistry Program, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Pisit Tangkijvanich
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: (P.T.); (C.A.)
| | - Chaiyaboot Ariyachet
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: (P.T.); (C.A.)
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Trang NTN, Lai CY, Tsai HC, Huang YL, Liu SC, Tsai CH, Fong YC, Tzeng HE, Tang CH. Apelin promotes osteosarcoma metastasis by upregulating PLOD2 expression via the Hippo signaling pathway and hsa_circ_0000004/miR-1303 axis. Int J Biol Sci 2023; 19:412-425. [PMID: 36632453 PMCID: PMC9830518 DOI: 10.7150/ijbs.77688] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/02/2022] [Indexed: 12/23/2022] Open
Abstract
Osteosarcoma is a highly mortal bone tumor, with a high metastatic potential, promoted in part by the enzyme procollagen-lysine 2-oxoglutarate 5-dioxygenase 2 (PLOD2). Increasing level of PLOD2 in osteosarcoma tissue correlates with lymphatic and distant metastasis. The adipokine apelin (APLN) is also found in different cancers and APLN upregulation promotes angiogenesis and metastasis, but its effects on osteosarcoma metastasis are uncertain. We explored APLN functioning in metastatic osteosarcoma. An analysis of records from the Gene Expression Omnibus (GEO) database showed higher levels of APLN expression in osteosarcoma tissue than in normal tissue. Similarly, levels of APLN and PLOD2 mRNA synthesis were upregulated in osteosarcoma tissue. Levels of APLN and PLOD2 protein correlated positively with osteosarcoma clinical stages. APLN increased PLOD2 expression in human osteosarcoma cell lines and cell migration via the mammalian Sterile 20-like kinase 1 (MST1), monopolar spindle-one-binder protein (MOB)1, and YAP cascades, and through hsa_circ_0000004 functioning as a sponge of miR-1303. We also found that knockdown of APLN antagonized lung metastasis in mice with osteosarcoma. APLN may be a therapeutic target in osteosarcoma metastasis.
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Affiliation(s)
- Nguyen Thi Nha Trang
- School of Medicine, China Medical University, Taichung, Taiwan.,Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan
| | - Chao-Yang Lai
- Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan
| | - Hsiao-Chi Tsai
- School of Medicine, China Medical University, Taichung, Taiwan
| | - Yuan-Li Huang
- Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan.,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Shan-Chi Liu
- Department of Medical Education and Research, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Chun-Hao Tsai
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
| | - Yi-Chin Fong
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan.,Department of Orthopaedic Surgery, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Huey-En Tzeng
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan.,Division of Hematology/Medical Oncology, Department of Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.,Ph.D. Program for Cancer Molecular Biology and Drug Discovery, and Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,✉ Corresponding authors: Chih-Hsin Tang, PhD, Department of Pharmacology, School of Medicine, China Medical University, No. 91, Hsueh-Shih Road, Taichung 40402, Taiwan. Tel: (886) 4-22052121 Ext. 7726; Fax: (886) 4-22333641; E-mail: . Huey-En Tzeng, MD, PhD, Department of Medical Research, Taichung Veterans General Hospital, Taichung 407219, Taiwan. Tel: (886) 4-2359-2525; E-mail:
| | - Chih-Hsin Tang
- School of Medicine, China Medical University, Taichung, Taiwan.,Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan.,Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan.,✉ Corresponding authors: Chih-Hsin Tang, PhD, Department of Pharmacology, School of Medicine, China Medical University, No. 91, Hsueh-Shih Road, Taichung 40402, Taiwan. Tel: (886) 4-22052121 Ext. 7726; Fax: (886) 4-22333641; E-mail: . Huey-En Tzeng, MD, PhD, Department of Medical Research, Taichung Veterans General Hospital, Taichung 407219, Taiwan. Tel: (886) 4-2359-2525; E-mail:
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A pseudo-Siamese framework for circRNA-RBP binding sites prediction integrating BiLSTM and soft attention mechanism. Methods 2022; 207:57-64. [PMID: 36113743 DOI: 10.1016/j.ymeth.2022.09.003] [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: 04/24/2022] [Revised: 08/24/2022] [Accepted: 09/09/2022] [Indexed: 11/20/2022] Open
Abstract
Circular RNAs (circRNAs) are widely expressed in tissues and play a key role in diseases through interacting with RNA binding proteins (RBPs). Since the high cost of traditional technology, computational methods are developed to identify the binding sites between circRNAs and RBPs. Unfortunately, these methods suffer from the insufficient learning of features and the single classification of output. To address these limitations, we propose a novel method named circ-pSBLA which constructs a pseudo-Siamese framework integrating Bi-directional long short-term memory (BiLSTM) network and soft attention mechanism for circRNA-RBP binding sites prediction. Softmax function and CatBoost are adopted to classify, respectively, and then a pseudo-Siamese framework is constructed. circ-pSBLA combines them to get final output. To validate the effectiveness of circ-pSBLA, we compare it with other state-of-the-art methods and carry out an ablation experiment on 17 sub-datasets. Moreover, we do motif analysis on 3 sub-datasets. The results show that circ-pSBLA achieves superior performance and outperforms other methods. All supporting source codes can be downloaded from https://github.com/gyj9811/circ-pSBLA.
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Pu Y, Wei J, Wu Y, Zhao K, Wu Y, Wu S, Yang X, Xing C. THUMPD3-AS1 facilitates cell growth and aggressiveness by the miR-218-5p/SKAP1 axis in colorectal cancer. Cell Biochem Biophys 2022; 80:483-494. [PMID: 35538197 DOI: 10.1007/s12013-022-01074-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 04/22/2022] [Indexed: 12/11/2022]
Abstract
BACKGROUND Colorectal cancer (CRC) is a malignant cancer with a high mortality. Accumulating studies have revealed that mRNAs involved in ceRNA (competing endogenous RNA) network are implicated in the tumorigenesis and development of CRC. Here, we aimed to elucidate the ceRNA network involving Src kinase associated phosphoprotein 1 (SKAP1) in the biological characteristics of CRC. METHODS Expression levels of genes in colon adenocarcinoma (COAD) samples and prognosis of COAD patients were predicted using publicly available online tool. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), clony formation and Transwell assays were conducted to test the biological functions of SKAP1 and THUMPD3 antisense RNA 1 (THUMPD3-AS1) in CRC cells. Western blot was used to measure the protein levels of SKAP1. Gene expression in CRC cells was detected by reverse transcription quantitative polymerase chain reaction (RT-qPCR). The interaction between miR-218-5p and THUMPD3-AS1 (or SKAP1) was verified by RNA pulldown and luciferase reporter assays. RESULTS SKAP1 was upregulated in COAD tissues and CRC cells and it reflected a poor prognosis in patients with COAD. SKAP1 knockdown inhibited CRC (HT-29 and HCT-116) cell proliferation, migration and invasion. Mechanistically, THUMPD3-AS1 acted as a ceRNA to sponge miR-218-5p and subsequently upregulated SKAP1 expression in CRC cells. SKAP1 overexpression reversed the suppressive effect of THUMPD3-AS1 knockdown on proliferation, migration and invision of CRC cells. CONCLUSIONS THUMPD3-AS1 promotes CRC cell growth and aggressiveness by regulating the miR-218-5p/SKAP1 axis.
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Affiliation(s)
- Yuwei Pu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Jinrong Wei
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Yong Wu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Kui Zhao
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Yongyou Wu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Shu Wu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Xiaodong Yang
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China.
| | - Chungen Xing
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China.
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8
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Kong S, Tian S, Wang Z, Shi Y, Zhang J, Zhuo H. Circular RNA circPFKP suppresses the proliferation and metastasis of gastric cancer cell via sponging miR-644 and regulating ADAMTSL5 expression. Bioengineered 2022; 13:12326-12337. [PMID: 35587154 PMCID: PMC9275984 DOI: 10.1080/21655979.2022.2073001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The treatment of gastric cancer (GC) is extremely challenging; however, the specific pathogenesis of GC remains unclear. Circular RNAs (CircRNAs) are non-coding RNAs that can regulate gene expression both transcriptionally and post-transcriptionally. However, little is known about the circRNAs that are important in the progression of GC. This study identified significantly dysregulated circRNAs by analyzing gastric cancer patients and normal control tissues. The target gene was predicted using online bioinformatics tools and verified using RNA pull-down and luciferase reporter assays. Quantitative real-time polymerase chain reaction (qRT-PCR) and western blotting were used to evaluate gene and protein expression. The malignant behavior of GC cells was determined using 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay, wound healing assay, Transwell invasion assay, and flow cytometry. CircPFKP is downregulated in GC tissues, and overexpression of circPFKP inhibits malignant behavior in GC cells. Bioinformatics predicted that circPFKP could bind to miR-644, and miR-644 could target disintegrin-like and metalloprotease domain-containing thrombospondin type 1 motif-like 5 (ADAMTSL5). Overexpression of circPFKP enhances the expression of ADAMTSL5 by decreasing the expression of miR-644 to suppress the growth of xenograft GC tumors in vivo and in vitro. In conclusion, the circPFKP/miR-644/ADAMTSL5 regulatory pathway inhibited the malignant progression of GC. These findings may extend our understanding of the effects of circRNAs on cancer development and provide novel targets for the diagnosis of GC.
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Affiliation(s)
- Shuai Kong
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Shubo Tian
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhu Wang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yulong Shi
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jizhun Zhang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Hongqing Zhuo
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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Yang YP, Chang YL, Lai YH, Tsai PH, Hsiao YJ, Nguyen LH, Lim XZ, Weng CC, Ko YL, Yang CH, Hwang DK, Chen SJ, Chiou SH, Chiou GY, Wang AG, Chien Y. Retinal Circular RNA hsa_circ_0087207 Expression Promotes Apoptotic Cell Death in Induced Pluripotent Stem Cell-Derived Leber’s Hereditary Optic Neuropathy-like Models. Biomedicines 2022; 10:biomedicines10040788. [PMID: 35453537 PMCID: PMC9027941 DOI: 10.3390/biomedicines10040788] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 02/01/2023] Open
Abstract
Backgrounds: Leber’s hereditary optic neuropathy (LHON) is known as an inherited retinal disorder characterized by the bilateral central vision loss and degeneration of retinal ganglion cells (RGCs). Unaffected LHON carriers are generally asymptomatic, suggesting that certain factors may contribute to the disease manifestations between carriers and patients who carry the same mutated genotypes. Methods: We first aimed to establish the iPSC-differentiated RGCs from the normal healthy subject, the carrier, and the LHON patient and then compared the differential expression profile of circular RNAs (CircRNAs) among RGCs from these donors in vitro. We further overexpressed or knocked down the most upregulated circRNA to examine whether this circRNA contributes to the distinct phenotypic manifestations between the carrier- and patient-derived RGCs. Results: iPSCs were generated from the peripheral blood cells from the healthy subject, the carrier, and the LHON patient and successfully differentiated into RGCs. These RGCs carried equivalent intracellular reactive oxygen species, but only LHON-patient iPSC-derived RGCs exhibited remarkable apoptosis. Next-generation sequencing and quantitative real-time PCR revealed the circRNA hsa_circ_0087207 as the most upregulated circRNA in LHON-patient iPSC-derived RGCs. Overexpression of hsa_circ_0087207 increased the apoptosis in carrier iPSC-derived RGCs, while knockdown of hsa_circ_0087207 attenuated the apoptosis in LHON-patient iPSC-derived RGCs. Predicted by bioinformatics approaches, hsa_circ_0087207 acts as the sponge of miR-665 to induce the expression of a variety of apoptosis-related genes in LHON patient iPSC-derived RGCs. Conclusions: Our data indicated that hsa_circ_0087207 upregulation distinguishes the disease phenotype manifestations between iPSC-derived RGCs generated from the LHON patient and carrier. Targeting the hsa_circ_0087207/miR-665 axis might hold therapeutic promises for the treatment of LHON.
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Affiliation(s)
- Yi-Ping Yang
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- Institute of Food Safety and Health Risk Assessment, School of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
| | - Yuh-Lih Chang
- Department of Pharmacy, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
- Department of Pharmacy, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
| | - Yun-Hsien Lai
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
| | - Ping-Hsing Tsai
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
| | - Yu-Jer Hsiao
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
| | - Long Hoang Nguyen
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
- Department of Basic Medical Sciences, Hanoi University of Pharmacy, Hanoi 100000, Vietnam
| | - Xue-Zhen Lim
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
| | - Chang-Chi Weng
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
| | - Yu-Ling Ko
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
| | - Chang-Hao Yang
- Department of Ophthalmology, National Taiwan University Hospital, Taipei 10002, Taiwan;
- Department of Ophthalmology, College of Medicine, National Taiwan University, Taipei 11217, Taiwan
| | - De-Kuang Hwang
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
| | - Shih-Jen Chen
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
| | - Shih-Hwa Chiou
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
- Genomic Research Center, Academia Sinica, Taipei 11217, Taiwan
| | - Guang-Yuh Chiou
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
- Correspondence: (G.-Y.C.); (Y.C.)
| | - An-Guor Wang
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
| | - Yueh Chien
- Department of Medical Research, Taipei Veteran General Hospital, Taipei 11217, Taiwan; (Y.-P.Y.); (Y.-H.L.); (P.-H.T.); (Y.-J.H.); (L.H.N.); (X.-Z.L.); (Y.-L.K.); (S.-H.C.)
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 11217, Taiwan; (D.-K.H.); (S.-J.C.); (A.-G.W.)
- Correspondence: (G.-Y.C.); (Y.C.)
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10
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Interactions of circRNAs with methylation: An important aspect of circRNA biogenesis and function (Review). Mol Med Rep 2022; 25:169. [PMID: 35302170 PMCID: PMC8971914 DOI: 10.3892/mmr.2022.12685] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/14/2022] [Indexed: 11/15/2022] Open
Abstract
Circular RNA (circRNA) molecules are noncoding RNAs with unique circular covalently closed structures that contribute to gene expression regulation, protein translation and act as microRNA sponges. circRNAs also have important roles in human disease, particularly tumorigenesis and antitumor processes. Methylation is an epigenetic modification that regulates the expression and roles of DNA and coding RNA and their interactions, as well as of noncoding RNA molecules. Previous studies have focused on the effects of methylation modification on circRNA expression, transport, stability, translation and degradation of circRNAs, as well as how circRNA methylation occurs and the influence of circRNAs on methylation modification processes. circRNA and methylation can also regulate disease pathogenesis via these interactions. In the present study, we define the relationship between circRNAs and methylation, as well as the functions and mechanisms of their interactions during disease progression.
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11
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Lu J, Xiao Z, Xu M, Li L. New Insights into LINC00346 and its Role in Disease. Front Cell Dev Biol 2022; 9:819785. [PMID: 35096842 PMCID: PMC8794746 DOI: 10.3389/fcell.2021.819785] [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: 11/22/2021] [Accepted: 12/28/2021] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence has shown that long intergenic non-protein-coding RNA 346 (LINC00346) functions as an oncogene in the tumorigenesis of several cancers. The expression level of LINC00346 has been shown to be obviously correlated with prognosis, lymphoma metastasis, histological grade, TNM stage, tumor size and pathologic stage. LINC00346 has been found to regulate specific cellular functions by interacting with several molecules and signaling pathways. In this review, we summarize recent evidence concerning the role of LINC00346 in the occurrence and development of diseases. We also discuss the potential clinical utility of LINC00346, thereby providing new insight into the diagnosis and treatment of diseases. In addition, we further discuss the potential clinical utility of LINC00346 in the diagnosis, prognostication, and treatment of diseases.
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Affiliation(s)
- Juan Lu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Zhaoying Xiao
- Department of Infectious Diseases Shengzhou People' Hospital, Shengzhou Branch, The Fisrt Affiliated Hospital of Zhejiang University, Shengzhou, China
| | - Mengqiu Xu
- Department of Infectious Diseases Shengzhou People' Hospital, Shengzhou Branch, The Fisrt Affiliated Hospital of Zhejiang University, Shengzhou, China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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12
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Garlapati P, Ling J, Chiao PJ, Fu J. Circular RNAs regulate cancer-related signaling pathways and serve as potential diagnostic biomarkers for human cancers. Cancer Cell Int 2021; 21:317. [PMID: 34162394 PMCID: PMC8220689 DOI: 10.1186/s12935-021-02017-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 06/10/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) are RNAs that have an important role in various pathological processes, including cancer. After the usage of high-throughput RNA sequencing, many circRNAs were found to be differentially expressed in various cancer cell lines and regulate cell signaling pathways by modulating particular gene expressions. Understanding their role in these pathways and what cancers they are found in can set the stage for identifying diagnostic and prognostic biomarkers and therapeutic targets of cancer. This paper will discuss which circRNAs are found in different cancers and what mechanisms they use to upregulate or downregulate certain cellular components.
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Affiliation(s)
- Pranavi Garlapati
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jinjie Ling
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, 10032, USA
| | - Paul J Chiao
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jie Fu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
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13
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Wan H, Yuan B, Jiang K, Wei J, Feng X, Sun B, Wang F. CircRNA CircRIMS is Overexpressed in Esophageal Squamous Cell Carcinoma and Downregulate miR-613 Through Methylation to Increase Cell Proliferation. Cancer Manag Res 2021; 13:4587-4595. [PMID: 34135635 PMCID: PMC8200154 DOI: 10.2147/cmar.s282983] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 04/22/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose CircRNA CircRIMS has been characterized as an oncogenic circRNA in gastric cancer, while its role in other cancers is unknown. This study aimed to explore the role of CircRIMS in esophageal squamous cell carcinoma (ESCC). Patients and Methods Tissues collected from 60 ESCC patients were subjected to extractions of total RNA and RT-qPCRs to analyze the differential expression of CircRIMS and miR-613. The 60 ESCC patients were followed up for 5 years to analyze the prognostic value of CircRIMS for ESCC. The interaction between CircRIMS and miR-613 was showed by luciferase activity assay and fluorescence in situ hybridization. The role of CircRIMS in regulating miR-613 expression and methylation was analyzed by overexpression experiments, RT-qPCRs and Western blot assay. The role of CircRIMS and miR-613 in regulating cell proliferation was analyzed using the BrdU assay. ESCC xenograft model was used to demonstrate the role of CircRIMS and miR-613 in vivo. Results We found that CircRIMS was overexpressed in ESCC and predicted poor survival. In addition, miR-613 was under expressed in ESCC and inversely correlated with CircRIMS. In ESCC cells, CircRIMS overexpression decreased the expression of miR-613 and increased the methylation of miR-613 gene. Cell proliferation assay showed that CircRIMS overexpression reduced the inhibitory effects of miR-613 overexpression on cell proliferation. Animal experience finally illustrated that CircRNA CircRIMS downregulated miR-613 through methylation to promote tumor growth. Conclusion Therefore, CircRIMS may downregulate miR-613 through methylation to increase cell proliferation in ESCC.
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Affiliation(s)
- Haijun Wan
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
| | - Bosi Yuan
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
| | - Kang Jiang
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
| | - Juan Wei
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
| | - Xiaoyue Feng
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
| | - Bo Sun
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
| | - Fangyu Wang
- Department of Gastroenterology, General Hospital of Eastern Theater Command, Nanjing City, Jiangsu Province, 210002, People's Republic of China
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14
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Circular RNAs as microRNA sponges: evidence and controversies. Essays Biochem 2021; 65:685-696. [PMID: 34028529 DOI: 10.1042/ebc20200060] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/08/2021] [Accepted: 04/19/2021] [Indexed: 12/16/2022]
Abstract
Gene expression in eukaryotic cells is a complex process encompassing several layers of regulation at the transcriptional and post-transcriptional levels. At the post-transcriptional level, microRNAs (miRs) are key regulatory molecules that function by binding directly to mRNAs. This generally leads to less efficient translation of the target mRNAs. More recently, an additional layer of gene regulation has been discovered, as other molecules, including circular RNAs (circRNAs), may bind to miRs and thereby function as sponges or decoys resulting in increased expression of the corresponding miR target genes. The circRNAs constitute a large class of mainly non-coding RNAs, which have been extensively studied in recent years, in particular in the cancer research field where many circRNAs have been proposed to function as miR sponges. Here, we briefly describe miR-mediated gene regulation and the extra layer of regulation that is imposed by the circRNAs. We describe techniques and methodologies that are commonly used to investigate potential miR sponging properties of circRNAs and discuss major pitfalls and controversies within this relatively new research field.
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15
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Khan S, Jha A, Panda AC, Dixit A. Cancer-Associated circRNA-miRNA-mRNA Regulatory Networks: A Meta-Analysis. Front Mol Biosci 2021; 8:671309. [PMID: 34055888 PMCID: PMC8149909 DOI: 10.3389/fmolb.2021.671309] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/13/2021] [Indexed: 01/11/2023] Open
Abstract
Recent advances in sequencing technologies and the discovery of non-coding RNAs (ncRNAs) have provided new insights in the molecular pathogenesis of cancers. Several studies have implicated the role of ncRNAs, including microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and recently discovered circular RNAs (circRNAs) in tumorigenesis and metastasis. Unlike linear RNAs, circRNAs are highly stable and closed-loop RNA molecules. It has been established that circRNAs regulate gene expression by controlling the functions of miRNAs and RNA-binding protein (RBP) or by translating into proteins. The circRNA-miRNA-mRNA regulatory axis is associated with human diseases, such as cancers, Alzheimer's disease, and diabetes. In this study, we explored the interaction among circRNAs, miRNAs, and their target genes in various cancers using state-of-the-art bioinformatics tools. We identified differentially expressed circRNAs, miRNAs, and mRNAs on multiple cancers from publicly available data. Furthermore, we identified many crucial drivers and tumor suppressor genes in the circRNA-miRNA-mRNA regulatory axis in various cancers. Together, this study data provide a deeper understanding of the circRNA-miRNA-mRNA regulatory mechanisms in cancers.
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Affiliation(s)
- Shaheerah Khan
- Institute of Life Sciences, Bhubaneswar, India
- Regional Centre for Biotechnology, Faridabad, India
| | - Atimukta Jha
- Institute of Life Sciences, Bhubaneswar, India
- Manipal Academy of Higher Education, Manipal, India
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16
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Queiroz AL, Lessard SJ, Ouchida AT, Araujo HN, Gonçalves DA, Simões Fróes Guimarães DSP, Teodoro BG, So K, Espreafico EM, Hirshman MF, Alberici LC, Kettelhut IDC, Goodyear LJ, Silveira LR. The MicroRNA miR-696 is regulated by SNARK and reduces mitochondrial activity in mouse skeletal muscle through Pgc1α inhibition. Mol Metab 2021; 51:101226. [PMID: 33812060 PMCID: PMC8121711 DOI: 10.1016/j.molmet.2021.101226] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/16/2021] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE MicroRNAs (miRNA) are known to regulate the expression of genes involved in several physiological processes including metabolism, mitochondrial biogenesis, proliferation, differentiation, and cell death. METHODS Using "in silico" analyses, we identified 219 unique miRNAs that potentially bind to the 3'UTR region of a critical mitochondrial regulator, the peroxisome proliferator-activated receptor gamma coactivator (PGC) 1 alpha (Pgc1α). Of the 219 candidate miRNAs, miR-696 had one of the highest interactions at the 3'UTR of Pgc1α, suggesting that miR-696 may be involved in the regulation of Pgc1α. RESULTS Consistent with this hypothesis, we found that miR-696 was highly expressed in the skeletal muscle of STZ-induced diabetic mice and chronic high-fat-fed mice. C2C12 muscle cells exposed to palmitic acid also exhibited a higher expression of miR-696. This increased expression corresponded with a reduced expression of oxidative metabolism genes and reduced mitochondrial respiration. Importantly, reducing miR-696 reversed decreases in mitochondrial activity in response to palmitic acid. Using C2C12 cells treated with the AMP-activated protein kinase (AMPK) activator AICAR and skeletal muscle from AMPKα2 dominant-negative (DN) mice, we found that the signaling mechanism regulating miR-696 did not involve AMPK. In contrast, overexpression of SNF1-AMPK-related kinase (SNARK) in C2C12 cells increased miR-696 transcription while knockdown of SNARK significantly decreased miR-696. Moreover, muscle-specific transgenic mice overexpressing SNARK exhibited a lower expression of Pgc1α, elevated levels of miR-696, and reduced amounts of spontaneous activity. CONCLUSIONS Our findings demonstrate that metabolic stress increases miR-696 expression in skeletal muscle cells, which in turn inhibits Pgc1α, reducing mitochondrial function. SNARK plays a role in this process as a metabolic stress signaling molecule inducing the expression of miR-696.
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Affiliation(s)
- André L Queiroz
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, USP, Ribeirão Preto, Brazil; Research Division, Joslin Diabetes Center, and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Sarah J Lessard
- Research Division, Joslin Diabetes Center, and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Amanda T Ouchida
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, USP, Ribeirão Preto, Brazil
| | - Hygor N Araujo
- Obesity and Comorbidities Research Center, OCRC, IB, UNICAMP, Campinas, Brazil
| | - Dawit A Gonçalves
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, USP, Ribeirão Preto, Brazil
| | | | - Bruno G Teodoro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, USP, Ribeirão Preto, Brazil; Department of Physics and Chemistry, Faculty of Pharmaceutical Science, USP, Ribeirão Preto, Brazil
| | - Kawai So
- Research Division, Joslin Diabetes Center, and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Enilza M Espreafico
- Department of Cell Biology, Ribeirão Preto Medical School, USP, Ribeirão Preto, Brazil
| | - Michael F Hirshman
- Research Division, Joslin Diabetes Center, and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Luciane C Alberici
- Department of Physics and Chemistry, Faculty of Pharmaceutical Science, USP, Ribeirão Preto, Brazil
| | - Isis do Carmo Kettelhut
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, USP, Ribeirão Preto, Brazil
| | - Laurie J Goodyear
- Research Division, Joslin Diabetes Center, and Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
| | - Leonardo R Silveira
- Obesity and Comorbidities Research Center, OCRC, IB, UNICAMP, Campinas, Brazil.
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17
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Wei X, Shi Y, Dai Z, Wang P, Meng X, Yin B. Underlying metastasis mechanism and clinical application of exosomal circular RNA in tumors (Review). Int J Oncol 2021; 58:289-297. [PMID: 33650643 PMCID: PMC7864150 DOI: 10.3892/ijo.2021.5179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/11/2021] [Indexed: 12/14/2022] Open
Abstract
Circular RNA (circRNA) is a long non-coding RNA molecule with a closed loop structure lacking a 5′cap and 3′tail. circRNA is stable, difficult to cleave and resistant to RNA exonuclease or RNase R degradation. circRNA molecules have several clinical applications, especially in tumors. For instance, circRNA may be used for non-invasive diagnosis, therapy and prognosis. Exosomes play a crucial role in the development of tumors. Exosomal circRNA in particular has led to increased research interest into tumorigenesis and tumor progression. Additionally, exosomal circRNA plays a role in cell-cell communication. Exosomal circRNA facilitates tumor metastasis by altering the tumor microenvironment and the pre-metastatic niche. Additionally, studies have revealed the mechanism by which exosomal circRNA affects malignant progression through signal transduction. Moreover, exosomal circRNA promotes tumor metastasis by regulating gene expression, RNA transcription and protein translation. In this review, the biological features and clinical application of exosomal circRNA are described, highlighting the underlying mechanisms through which they regulate tumor metastasis. The application of circRNA as clinical diagnostic biomarkers and in the development of novel therapeutic strategies is also discussed.
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Affiliation(s)
- Xuezhi Wei
- Department of Urology, Sheng Jing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yaxing Shi
- Department of Urology, Sheng Jing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Zhijun Dai
- Department of Surgery, People's Hospital of Nong An Country, Changchun, Jilin 130200, P.R. China
| | - Pei Wang
- Department of Orthopedics, Chengde Affiliated Hospital of Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Xin Meng
- Department of Biochemistry and Molecular Biology, School of Life Sciences, China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Bo Yin
- Department of Urology, Sheng Jing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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