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Zhu DH, Su KK, Ou-Yang XX, Zhang YH, Yu XP, Li ZH, Ahmadi-Nishaboori SS, Li LJ. Mechanisms and clinical landscape of N6-methyladenosine (m6A) RNA modification in gastrointestinal tract cancers. Mol Cell Biochem 2024:10.1007/s11010-024-05040-x. [PMID: 38856795 DOI: 10.1007/s11010-024-05040-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 05/18/2024] [Indexed: 06/11/2024]
Abstract
Epigenetics encompasses reversible and heritable chemical modifications of non-nuclear DNA sequences, including DNA and RNA methylation, histone modifications, non-coding RNA modifications, and chromatin rearrangements. In addition to well-studied DNA and histone methylation, RNA methylation has emerged as a hot topic in biological sciences over the past decade. N6-methyladenosine (m6A) is the most common and abundant modification in eukaryotic mRNA, affecting all RNA stages, including transcription, translation, and degradation. Advances in high-throughput sequencing technologies made it feasible to identify the chemical basis and biological functions of m6A RNA. Dysregulation of m6A levels and associated modifying proteins can both inhibit and promote cancer, highlighting the importance of the tumor microenvironment in diverse biological processes. Gastrointestinal tract cancers, including gastric, colorectal, and pancreatic cancers, are among the most common and deadly malignancies in humans. Growing evidence suggests a close association between m6A levels and the progression of gastrointestinal tumors. Global m6A modification levels are substantially modified in gastrointestinal tumor tissues and cell lines compared to healthy tissues and cells, possibly influencing various biological behaviors such as tumor cell proliferation, invasion, metastasis, and drug resistance. Exploring the diagnostic and therapeutic potential of m6A-related proteins is critical from a clinical standpoint. Developing more specific and effective m6A modulators offers new options for treating these tumors and deeper insights into gastrointestinal tract cancers.
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Affiliation(s)
- Dan-Hua Zhu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Kun-Kai Su
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Xiao-Xi Ou-Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Yan-Hong Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Xiao-Peng Yu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Zu-Hong Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | | | - Lan-Juan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
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Jiang X, Zhan L, Tang X. RNA modifications in physiology and pathology: Progressing towards application in clinical settings. Cell Signal 2024; 121:111242. [PMID: 38851412 DOI: 10.1016/j.cellsig.2024.111242] [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: 02/16/2024] [Revised: 05/23/2024] [Accepted: 05/30/2024] [Indexed: 06/10/2024]
Abstract
The potential to modify individual nucleotides through chemical means in order to impact the electrostatic charge, hydrophobic properties, and base pairing of RNA molecules is harnessed in the medical application of stable synthetic RNAs like mRNA vaccines and synthetic small RNA molecules. These modifications are used to either increase or decrease the production of therapeutic proteins. Additionally, naturally occurring biochemical alterations of nucleotides play a role in regulating RNA metabolism and function, thereby modulating essential cellular processes. Research elucidating the mechanisms through which RNA modifications govern fundamental cellular functions in multicellular organisms has enhanced our comprehension of how irregular RNA modification profiles can lead to human diseases. Collectively, these fundamental scientific findings have unveiled the molecular and cellular functions of RNA modifications, offering new opportunities for therapeutic intervention and paving the way for a variety of innovative clinical strategies.
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Affiliation(s)
- Xue Jiang
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu 223005, China
| | - Lijuan Zhan
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu 223005, China.
| | - Xiaozhu Tang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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Li R, Zhao H, Huang X, Zhang J, Bai R, Zhuang L, Wen S, Wu S, Zhou Q, Li M, Zeng L, Zhang S, Deng S, Su J, Zuo Z, Chen R, Lin D, Zheng J. Super-enhancer RNA m 6A promotes local chromatin accessibility and oncogene transcription in pancreatic ductal adenocarcinoma. Nat Genet 2023; 55:2224-2234. [PMID: 37957340 DOI: 10.1038/s41588-023-01568-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 10/12/2023] [Indexed: 11/15/2023]
Abstract
The biological functions of noncoding RNA N6-methyladenosine (m6A) modification remain poorly understood. In the present study, we depict the landscape of super-enhancer RNA (seRNA) m6A modification in pancreatic ductal adenocarcinoma (PDAC) and reveal a regulatory axis of m6A seRNA, H3K4me3 modification, chromatin accessibility and oncogene transcription. We demonstrate the cofilin family protein CFL1, overexpressed in PDAC, as a METTL3 cofactor that helps seRNA m6A methylation formation. The increased seRNA m6As are recognized by the reader YTHDC2, which recruits H3K4 methyltransferase MLL1 to promote H3K4me3 modification cotranscriptionally. Super-enhancers with a high level of H3K4me3 augment chromatin accessibility and facilitate oncogene transcription. Collectively, these results shed light on a CFL1-METTL3-seRNA m6A-YTHDC2/MLL1 axis that plays a role in the epigenetic regulation of local chromatin state and gene expression, which strengthens our knowledge about the functions of super-enhancers and their transcripts.
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Affiliation(s)
- Rui Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Hongzhe Zhao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Xudong Huang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Jialiang Zhang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Ruihong Bai
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Lisha Zhuang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Shujuan Wen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Shaojia Wu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Quanbo Zhou
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Mei Li
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Lingxing Zeng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Shaoping Zhang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Shuang Deng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Jiachun Su
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Zhixiang Zuo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China
| | - Rufu Chen
- Guangdong Provincial People's Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Dongxin Lin
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China.
- Department of Etiology and Carcinogenesis, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China.
| | - Jian Zheng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, China.
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China.
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China.
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Yang Y, Liu Z, Lu J, Sun Y, Fu Y, Pan M, Xie X, Ge Q. Analysis approaches for the identification and prediction of N6-methyladenosine sites. Epigenetics 2023; 18:2158284. [PMID: 36562485 PMCID: PMC9980620 DOI: 10.1080/15592294.2022.2158284] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The global dynamics in a variety of biological processes can be revealed by mapping transcriptional m6A sites, in particular full-transcriptome m6A. And individual m6A sites have contributed to biological function, which can be evaluated by stoichiometric information obtained from the single nucleotide resolution. Currently, the identification of m6A sites is mainly carried out by experiment and prediction methods, based on high-throughput sequencing and machine learning model respectively. This review summarizes the recent topics and progress made in bioinformatics methods of deciphering the m6A methylation, including the experimental detection of m6A methylation sites, techniques of data analysis, the way of predicting m6A methylation sites, m6A methylation databases, and detection of m6A modification in circRNA. At the end, the essay makes a brief discussion for the development perspective in this area.
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Affiliation(s)
- Yuwei Yang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Zhiyu Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Junru Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Yuqing Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Yue Fu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Min Pan
- Department of Pathology and Pathophysiology School of Medicine, Southeast University, Nanjing, China
| | - Xueying Xie
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Qinyu Ge
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, People's Republic of China
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Dong G, Liang Y, Chen B, Zhang T, Wang H, Chen Y, Zhang Y, Jiang F, Wang Y. N 6 -methyladenosine-modified circFUT8 competitively interacts with YTHDF2 and miR-186-5p to stabilize FUT8 mRNA to promote malignant progression in lung adenocarcinoma. Thorac Cancer 2023; 14:2962-2975. [PMID: 37669906 PMCID: PMC10569907 DOI: 10.1111/1759-7714.15086] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 09/07/2023] Open
Abstract
BACKGROUND Lung cancer is the leading cause of cancer related to mortality worldwide, and the main pathological type is lung adenocarcinoma (LUAD). Circular RNAs (circRNAs) have been reported to be modified by N6 -methyladenosine (m6A), which is involved in the progression of diverse tumors. However, the crosstalk between circRNAs and m6A modification has not been well elucidated in LUAD. METHODS MeRIP-seq and YTHDF2-RIP-seq datasets were explored to identify candidate circRNAs modified by YTHDF2. Dual-luciferase reporter assay, RIP, and rescue assays were performed to explore the relationship between circFUT8 and its parent mRNA of FUT8. In vitro and in vivo experiments were utilized to uncover the function of circFUT8. RESULTS In this study, we identified a novel m6A-modified circFUT8, derived from exon 3 of FUT8, which was elevated in tumor tissues compared with adjacent noncancerous tissues. The m6A reader YTHDF2 recognized and destabilized circFUT8 in an m6A-dependent manner. YTHDF2 also combined with the line form of FUT8 (mFUT8), and circFUT8 competitively interacted with YTHDF2, blunting its binding to mFUT8, to stabilize the mRNA level of FUT8. Additionally, circFUT8 sponged miR-186-5p to elevate the expression of mFUT8. Finally, we revealed that circFUT8 promoted the malignant progression of LUAD dependent on the oncogenic function of FUT8. CONCLUSIONS These findings identified a novel m6A-modified circFUT8 recognized and destabilized by YTHDF2, which competitively interacted with YTHDF2 and miR-186-5p to stabilize FUT8 mRNA to promote malignant progression in LUAD.
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Affiliation(s)
- Gaochao Dong
- Department of Medical Genetics, Medical SchoolNanjing UniversityNanjingChina
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
| | - Yingkuan Liang
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
- Department of Thoracic SurgeryThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Bing Chen
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
| | - Te Zhang
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
- The Fourth Clinical College of Nanjing Medical UniversityNanjingChina
| | - Hui Wang
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
- The Fourth Clinical College of Nanjing Medical UniversityNanjingChina
| | - Yuzhong Chen
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
- The Fourth Clinical College of Nanjing Medical UniversityNanjingChina
| | - Yijian Zhang
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
- The Fourth Clinical College of Nanjing Medical UniversityNanjingChina
| | - Feng Jiang
- Department of Thoracic SurgeryNanjing Medical University Affiliated Cancer Hospital & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer ResearchNanjingChina
- Jiangsu Key Laboratory of Molecular and Translational Cancer ResearchCancer Institute of Jiangsu ProvinceNanjingChina
- The Fourth Clinical College of Nanjing Medical UniversityNanjingChina
| | - Yaping Wang
- Department of Medical Genetics, Medical SchoolNanjing UniversityNanjingChina
- Jiangsu Key Laboratory of Molecular Medicine, Medical SchoolNanjing UniversityNanjingChina
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Sun D, Song N, Li M, Chen X, Zhang X, Yu Y, Ying J, Xu M, Zheng W, Han C, Ji H, Jiang Y. Comprehensive analysis of circRNAs for N7-methylguanosine methylation modification in human oral squamous cell carcinoma. FASEB Bioadv 2023; 5:305-320. [PMID: 37554544 PMCID: PMC10405248 DOI: 10.1096/fba.2023-00036] [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: 03/29/2023] [Revised: 05/09/2023] [Accepted: 05/17/2023] [Indexed: 08/10/2023] Open
Abstract
N7-methylguanosine (m7G) modification is closely related to the occurrence of tumors. However, the m7G modification of circRNAs in oral squamous cell carcinoma (OSCC) remains to be investigated. Methylated RNA immunoprecipitation sequencing (MeRIP-seq) was used to measure the methylation levels of m7G and identify m7G sites in circRNAs in human OSCC and normal tissues. The host genes of differentially methylated and differentially expressed circRNAs were analyzed by Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses, and circRNA-miRNA-mRNA networks were predicted using the miRanda and miRDB databases. The analysis identified 2348 m7G peaks in 624 circRNAs in OSCC tissues. In addition, the source of m7G-methylated circRNAs in OSCC was mainly the sense overlap region compared with normal tissues. The most conserved m7G motif in OSCC tissues was CCUGU, whereas the most conserved motif in normal tissues was RCCUG (R = G/A). Importantly, GO enrichment and KEGG pathway analysis showed that the host genes of differentially methylated and differentially expressed circRNAs were involved in many cellular biological functions. Furthermore, the significantly differentially expressed circRNAs were analyzed to predict the circRNA-miRNA-mRNA networks. This study revealed the whole profile of circRNAs of differential m7G methylation in OSCC and suggests that m7G-modified circRNAs may impact the development of OSCC.
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Affiliation(s)
- Dongyuan Sun
- School of StomatologyWeifang Medical UniversityWeifangChina
- Department of StomatologyAffiliated Hospital of Weifang Medical UniversityWeifangChina
| | - Ning Song
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Minmin Li
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Xi Chen
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Xinyue Zhang
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Yang Yu
- School of StomatologyWeifang Medical UniversityWeifangChina
- Department of StomatologyAffiliated Hospital of Weifang Medical UniversityWeifangChina
| | - Jicheng Ying
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Mengqi Xu
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Wentian Zheng
- School of StomatologyWeifang Medical UniversityWeifangChina
| | - Chengbing Han
- Department of StomatologyFirst Affiliated Hospital of Weifang Medical UniversityWeifangChina
| | - Honghai Ji
- School of StomatologyWeifang Medical UniversityWeifangChina
- Department of StomatologyAffiliated Hospital of Weifang Medical UniversityWeifangChina
| | - Yingying Jiang
- School of StomatologyWeifang Medical UniversityWeifangChina
- Department of StomatologyAffiliated Hospital of Weifang Medical UniversityWeifangChina
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Liu L, Zhao H, Li J, Huang J, Xu Y, Li X, Wu Y, Li P, Guan X, Tang R. ALKB homolog 5 (ALKBH5)-induced circPUM1 upregulation facilitated the progression of neuroblastoma via miR-423-5p/PA2G4 axis. Pathol Res Pract 2023; 248:154609. [PMID: 37421841 DOI: 10.1016/j.prp.2023.154609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 05/14/2023] [Accepted: 06/07/2023] [Indexed: 07/10/2023]
Abstract
BACKGROUND The oncogenic role of circPUM1 has been revealed in multiple cancers. Nevertheless, the specific role and molecular mechanism of circPUM1 in neuroblastoma (NB) have never been reported. METHODS The expression of genes was detected using RT-qPCR and Western Blot assay. The proliferation, migration, and invasion of NB cells were evaluated by CCK-8 and Transwell assays. Besides, mouse model was established to evaluate the effect of circPUM1 on the progression of NB. The interaction among genes was verified through RIP, MeRIP, or Luciferase reporter assay. RESULTS Through our investigation, it was discovered that circPUM1 expression was abnormally elevated in NB tissues and the abundance of circPUM1 was correlated with unfavorable clinical outcomes in NB patients. Besides, the viability and mobility of NB cells as well as NB tumor growth were suppressed by silencing circPUM1. Moreover, bioinformatics prediction and experimental verification demonstrated that circPUM1 was a sponge for miR-423-5p which further targeted proliferation-associated protein 2G4 (PA2G4). The oncogenic effect of circPUM1 on NB was exerted through suppressing miR-423-5p to elevate PA2G4 expression. Finally, we investigated the transcriptional factor causing the upregulation of circPUM1 in NB. The result was that ALKB homolog 5 (ALKBH5), an m6A demethylase, suppressed the m6A modification of circPUM1 and caused the elevation of circPUM1 expression in NB. CONCLUSION ALKBH5 induced the upregulation of circPUM1 to accelerate the development of NB through regulating miR-423-5p/PA2G4 axis.
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Affiliation(s)
- Lin Liu
- Institute of Pediatric Research, Children's Hospital of Soochow University, China
| | - He Zhao
- Institute of Pediatric Research, Children's Hospital of Soochow University, China
| | - Jing Li
- Department of General Surgery, Children's Hospital of Soochow University, China
| | - Jie Huang
- Institute of Pediatric Research, Children's Hospital of Soochow University, China
| | - Yunyun Xu
- Institute of Pediatric Research, Children's Hospital of Soochow University, China
| | - Xiaolu Li
- Institute of Pediatric Research, Children's Hospital of Soochow University, China
| | - Yi Wu
- Institute of Pediatric Research, Children's Hospital of Soochow University, China
| | - Ping Li
- Department of Clinical Nutrition, Children's Hospital of Soochow University, China.
| | - Xinxian Guan
- Department of Neonatology, Children's Hospital of Soochow University, China.
| | - Ruze Tang
- Department of General Surgery, Children's Hospital of Soochow University, China.
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Ni S, Luo Z, Fan Y, Zhang W, Peng W, Zhang H. Alteration of m6A epitranscriptomic tagging of ribonucleic acids after spinal cord injury in mice. Front Neurosci 2022; 16:904573. [PMID: 36090276 PMCID: PMC9454195 DOI: 10.3389/fnins.2022.904573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
The m6A methylation is reported to function in multiple physiological and pathological processes. However, the functional relevance of m6A modification to post-spinal cord injured (SCI) damage is not yet clear. In the present study, methylated RNA immunoprecipitation combined with microarray analysis showed that the global RNA m6A levels were decreased following SCI. Then, gene ontology (GO) and kyoto encyclopedia of genes and genomes (KEGG) analyses were conducted to demonstrate the potential function of differential m6A-tagged transcripts and the altered transcripts with differential m6A levels. In addition, we found that the m6A “writer,” METTL3, significantly decreased after SCI in mice. The immunostaining validated that the expression of METTL3 mainly changed in GFAP or Iba-1+ cells. Together, this study shows the alteration of m6A modification following SCI in mice, which might contribute to the pathophysiology of the spinal cord after trauma.
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Affiliation(s)
- Shuangfei Ni
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zixiang Luo
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Yonggang Fan
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Weixin Zhang
- Department of Orthopaedics, Zhejiang Chinese Medicine University, Hangzhou, China
| | - Wei Peng
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
- Wei Peng,
| | - Huafeng Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Huafeng Zhang,
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Ma L, He LN, Kang S, Gu B, Gao S, Zuo Z. Advances in detecting N6-methyladenosine modification in circRNAs. Methods 2022; 205:234-246. [PMID: 35878749 DOI: 10.1016/j.ymeth.2022.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 12/14/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of noncoding RNAs with covalently single-stranded closed loop structures derived from back-splicing event of linear precursor mRNAs (pre-mRNAs). N6-methyladenosine (m6A), the most abundant epigenetic modification in eukaryotic RNAs, has been shown to play a crucial role in regulating the fate and biological function of circRNAs, and thus affecting various physiological and pathological processes. Accurate identification of m6A modification in circRNAs is an essential step to fully elucidate the crosstalk between m6A and circRNAs. In recent years, the rapid development of high-throughput sequencing technology and bioinformatic methodology has propelled the establishment of a multitude of approaches to detect circRNAs and m6A modification, including in vitro-based and in silico methods. Based on this, the research community has started on a new journey to develop methods for identification of m6A modification in circRNAs. In this review, we provide a comprehensive review and evaluation of the existing methods responsible for detecting circRNAs, m6A modification, and especially, m6A modification in circRNAs, which mainly focused on those developed based on high-throughput technologies and methodology of bioinformatics. This handy reference can help researchers figure out towards which direction this field will go.
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Affiliation(s)
- Lixia Ma
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment, Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital (College of Clinical Medical) of Henan University of Science and Technology, Luoyang, China
| | - Li-Na He
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Shiyang Kang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Bianli Gu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment, Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital (College of Clinical Medical) of Henan University of Science and Technology, Luoyang, China
| | - Shegan Gao
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment, Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital (College of Clinical Medical) of Henan University of Science and Technology, Luoyang, China.
| | - Zhixiang Zuo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
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Qin S, Zhang Q, Xu Y, Ma S, Wang T, Huang Y, Ju S. m 6A-modified circRNAs: detections, mechanisms, and prospects in cancers. Mol Med 2022; 28:79. [PMID: 35836125 PMCID: PMC9284916 DOI: 10.1186/s10020-022-00505-5] [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: 01/03/2022] [Accepted: 06/30/2022] [Indexed: 12/15/2022] Open
Abstract
Circular RNAs (circRNAs) have become a research hotspot in recent years with their universality, diversity, stability, conservativeness, and spatiotemporal specificity. N6-methyladenosine (m6A), the most abundant modification in the eukaryotic cells, is engaged in the pathophysiological processes of various diseases. An increasing amount of evidence has suggested that m6A modification is common in circRNAs and is associated with their biological functions. This review summarizes the effects of m6A modification on circRNAs and their regulation mechanisms in cancers, providing some suggestions of m6A-modified circRNAs in cancer therapy.
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Affiliation(s)
- Shiyi Qin
- Medical School of Nantong University, Nantong University, No. 19, Qixiu Road, Nantong, 226001, Jiangsu, China.,Department of Laboratory Medicine, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Nantong, 226001, Jiangsu, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Qi Zhang
- Medical School of Nantong University, Nantong University, No. 19, Qixiu Road, Nantong, 226001, Jiangsu, China.,Department of Laboratory Medicine, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Nantong, 226001, Jiangsu, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Yanhua Xu
- Medical School of Nantong University, Nantong University, No. 19, Qixiu Road, Nantong, 226001, Jiangsu, China.,Department of Laboratory Medicine, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Nantong, 226001, Jiangsu, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Shuo Ma
- Medical School of Nantong University, Nantong University, No. 19, Qixiu Road, Nantong, 226001, Jiangsu, China.,Department of Laboratory Medicine, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Nantong, 226001, Jiangsu, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Tianyi Wang
- Medical School of Nantong University, Nantong University, No. 19, Qixiu Road, Nantong, 226001, Jiangsu, China.,Department of Laboratory Medicine, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Nantong, 226001, Jiangsu, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Yuejiao Huang
- Medical School of Nantong University, Nantong University, No. 19, Qixiu Road, Nantong, 226001, Jiangsu, China. .,Department of Medical Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, 226001, Jiangsu, China. .,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China.
| | - Shaoqing Ju
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, No. 20, Xisi Road, Nantong, 226001, Jiangsu, China.
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Liu Y, Zeng S, Wu M. Novel insights into noncanonical open reading frames in cancer. Biochim Biophys Acta Rev Cancer 2022; 1877:188755. [PMID: 35777601 DOI: 10.1016/j.bbcan.2022.188755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/11/2022] [Accepted: 06/23/2022] [Indexed: 12/12/2022]
Abstract
With technological advances, previously neglected noncanonical open reading frames (nORFs) are drawing ever-increasing attention. However, the translation potential of numerous putative nORFs remains elusive, and the functions of noncanonical peptides have not been systemically summarized. Moreover, the relationship between noncanonical peptides and their counterpart protein or RNA products remains elusive and the clinical implementation of noncanonical peptides has not been explored. In this review, we highlight how recent technological advances such as ribosome profiling, bioinformatics approaches and CRISPR/Cas9 facilitate the research of noncanonical peptides. We delineate the features of each nORF category and the evolutionary process underneath the nORFs. Most importantly, we summarize the diversified functions of noncanonical peptides in cancer based on their subcellular location, which reflect their extensive participation in key pathways and essential cellular activities in cancer cells. Meanwhile, the equilibrium between noncanonical peptides and their corresponding transcripts or counterpart products may be dysregulated under pathological states, which is essential for their roles in cancer. Lastly, we explore their underestimated potential in clinical application as diagnostic biomarkers and treatment targets against cancer.
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Affiliation(s)
- Yihan Liu
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan, China; The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan 410008, China; Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Shan Zeng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
| | - Minghua Wu
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan, China; The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan 410008, China.
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Yue J, Wei Y, Zhao M. The Reversible Methylation of m6A Is Involved in Plant Virus Infection. BIOLOGY 2022; 11:biology11020271. [PMID: 35205137 PMCID: PMC8869485 DOI: 10.3390/biology11020271] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/20/2022] [Accepted: 02/06/2022] [Indexed: 02/01/2023]
Abstract
Simple Summary N6-methyladenosine (m6A) is the most prevalent modification in the mRNAs of many eukaryotic species. The abundance and effects of m6A are determined by dynamic interactions between its methyltransferases (“writers”), demethylases (“erasers”), and binding proteins (“readers”). It has been indicated that there is a strong correlation between m6A and virus infection in mammals. In the case of plant virus infection, it appears that m6A plays a dual role. On the one hand, m6A acts as a plant immune response induced by virus infection, inhibiting viral replication or translation through methylation of viral genome RNAs. On the other hand, m6A acts as part of an infection strategy employed by plant viruses to overcome the host immune system by interacting with m6A-related proteins. We proposed that antagonists of m6A-related proteins might be used to design new strategies for plant virus control in the future. Abstract In recent years, m6A RNA methylation has attracted broad interest and is becoming a hot research topic. It has been demonstrated that there is a strong association between m6A and viral infection in the human system. The life cycles of plant RNA viruses are often coordinated with the mechanisms of their RNA modification. Here, we reviewed recent advances in m6A methylation in plant viruses. It appears that m6A methylation plays a dual role during viral infection in plants. On the one hand, m6A methylation acts as an antiviral immune response induced by virus infection, which inhibits viral replication or translation through the methylation of viral genome RNAs. On the other hand, plant viruses could disrupt the m6A methylation through interacting with the key proteins of the m6A pathway to avoid modification. Those plant viruses containing ALKB domain are discussed as well. Based on this mechanism, we propose that new strategies for plant virus control could be designed with competitive antagonists of m6A-associated proteins.
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