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Guo C, Yu M, Liu J, Jia Z, Liu H, Zhao S. Molecular mechanism of Wilms tumour 1-associated protein in diabetes-related dry eye disease by mediating m6A methylation modification of lncRNA NEAT1. J Drug Target 2024; 32:200-212. [PMID: 38153328 DOI: 10.1080/1061186x.2023.2300682] [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: 08/07/2023] [Accepted: 12/24/2023] [Indexed: 12/29/2023]
Abstract
Background: Dry eye disease (DED) is often secondary to diabetes mellitus (DM).Purpose: This study is to explore the action of Wilms tumor 1-associated protein (WTAP) in DM-DED via lncRNA NEAT1 m6A methylation.Methods: DM-DED mouse models were treated with sh-WTAP/sh-NEAT1, followed by assessment of corneal epithelial damage/histopathological changes. HCE-2 cells were exposed to hyperosmotic conditions to establish in vitro DED models and treated with oe-NEAT1/sh-NEAT1/sh-WTAP/nigericin (an NLRP3 inflammasome inducer). Cell viability/apoptosis were evaluated by CCK-8/TUNEL. Levels of WTAP/NEAT1/inflammatory factors/NLRP3 inflammasome- and apoptosis-related markers were determined. m6A modification was examined by MeRIP-qPCR and NEAT1 stability was also detected.Results: DM-DED mice exhibited up-regulated WTAP/NEAT1 expression and severe corneal damage, whereas WTAP/NEAT1 knockdown alleviated inflammation/corneal damage. In hyperosmolarity-induced HCE-2 cells, NEAT1 aggravated inflammation and apoptosis, while NEAT1 knockdown suppressed NLRP3 inflammasome activation and ameliorated cell injury. Hyperosmolarity-induced WTAP expression increased m6A modification and NEAT1 mRNA stability. WTAP mediated m6A methylation of NEAT1 and NLRP3 inflammasome activation in DM-DED mice.
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Affiliation(s)
- Chen Guo
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Mingyi Yu
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Jinghua Liu
- School of Medicine, Nankai University, Tianjin, China
| | - Zhe Jia
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Hui Liu
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Shaozhen Zhao
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
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2
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Liang G, Hu JY, Liu RJ, Chao YP, Hu YF, Zheng H, Pan XY, Li YJ, Gong YH, Lin C, Lin JH, Wang JD, Li TX, Pan JP, Guo DY. α-Ketoglutarate plays an inflammatory inhibitory role by regulating scavenger receptor class a expression through N6-methyladenine methylation during sepsis. Eur J Immunol 2024:e2350655. [PMID: 38973083 DOI: 10.1002/eji.202350655] [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: 07/09/2023] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 07/09/2024]
Abstract
Sepsis arises from an uncontrolled inflammatory response triggered by infection or stress, accompanied by alteration in cellular energy metabolism, and a strong correlation exists between these factors. Alpha-ketoglutarate (α-KG), an intermediate product of the TCA cycle, has the potential to modulate the inflammatory response and is considered a crucial link between energy metabolism and inflammation. The scavenger receptor (SR-A5), a significant pattern recognition receptor, assumes a vital function in anti-inflammatory reactions. In the current investigation, we have successfully illustrated the ability of α-KG to mitigate inflammatory factors in the serum of septic mice and ameliorate tissue damage. Additionally, α-KG has been shown to modulate metabolic reprogramming and macrophage polarization. Moreover, our findings indicate that the regulatory influence of α-KG on sepsis is mediated through SR-A5. We also elucidated the mechanism by which α-KG regulates SR-A5 expression and found that α-KG reduced the N6-methyladenosine level of macrophages by up-regulating the m6A demethylase ALKBH5. α-KG plays a crucial role in inhibiting inflammation by regulating SR-A5 expression through m6A demethylation during sepsis. The outcomes of this research provide valuable insights into the relationship between energy metabolism and inflammation regulation, as well as the underlying molecular regulatory mechanism.
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Affiliation(s)
- Gang Liang
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
- Zhejiang University school of medicine, Hangzhou, P. R. China
| | - Jia-Yan Hu
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Rou-Jun Liu
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yu-Peng Chao
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yi-Fan Hu
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Hong Zheng
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Xin-Yu Pan
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yuan-Jing Li
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yang-Hui Gong
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Chi Lin
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Jia-Hao Lin
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Jia-Dong Wang
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Tong-Xin Li
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Jian-Ping Pan
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
- Institute of Translational Medicine, Hangzhou City University, Hangzhou, P.R. China
| | - Dong-Yang Guo
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
- Institute of Translational Medicine, Hangzhou City University, Hangzhou, P.R. China
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3
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Shelton WJ, Zandpazandi S, Nix JS, Gokden M, Bauer M, Ryan KR, Wardell CP, Vaske OM, Rodriguez A. Long-read sequencing for brain tumors. Front Oncol 2024; 14:1395985. [PMID: 38915364 PMCID: PMC11194609 DOI: 10.3389/fonc.2024.1395985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/27/2024] [Indexed: 06/26/2024] Open
Abstract
Brain tumors and genomics have a long-standing history given that glioblastoma was the first cancer studied by the cancer genome atlas. The numerous and continuous advances through the decades in sequencing technologies have aided in the advanced molecular characterization of brain tumors for diagnosis, prognosis, and treatment. Since the implementation of molecular biomarkers by the WHO CNS in 2016, the genomics of brain tumors has been integrated into diagnostic criteria. Long-read sequencing, also known as third generation sequencing, is an emerging technique that allows for the sequencing of longer DNA segments leading to improved detection of structural variants and epigenetics. These capabilities are opening a way for better characterization of brain tumors. Here, we present a comprehensive summary of the state of the art of third-generation sequencing in the application for brain tumor diagnosis, prognosis, and treatment. We discuss the advantages and potential new implementations of long-read sequencing into clinical paradigms for neuro-oncology patients.
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Affiliation(s)
- William J. Shelton
- Department of Neurosurgery, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Sara Zandpazandi
- Department of Neurosurgery, Medical University of South Carolina, Charleston, SC, United States
| | - J Stephen Nix
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Murat Gokden
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Michael Bauer
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Katie Rose Ryan
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Christopher P. Wardell
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Olena Morozova Vaske
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA, United States
| | - Analiz Rodriguez
- Department of Neurosurgery, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States
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4
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Adesanya O, Das D, Kalsotra A. Emerging roles of RNA-binding proteins in fatty liver disease. WILEY INTERDISCIPLINARY REVIEWS. RNA 2024; 15:e1840. [PMID: 38613185 PMCID: PMC11018357 DOI: 10.1002/wrna.1840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 02/08/2024] [Accepted: 03/05/2024] [Indexed: 04/14/2024]
Abstract
A rampant and urgent global health issue of the 21st century is the emergence and progression of fatty liver disease (FLD), including alcoholic fatty liver disease and the more heterogenous metabolism-associated (or non-alcoholic) fatty liver disease (MAFLD/NAFLD) phenotypes. These conditions manifest as disease spectra, progressing from benign hepatic steatosis to symptomatic steatohepatitis, cirrhosis, and, ultimately, hepatocellular carcinoma. With numerous intricately regulated molecular pathways implicated in its pathophysiology, recent data have emphasized the critical roles of RNA-binding proteins (RBPs) in the onset and development of FLD. They regulate gene transcription and post-transcriptional processes, including pre-mRNA splicing, capping, and polyadenylation, as well as mature mRNA transport, stability, and translation. RBP dysfunction at every point along the mRNA life cycle has been associated with altered lipid metabolism and cellular stress response, resulting in hepatic inflammation and fibrosis. Here, we discuss the current understanding of the role of RBPs in the post-transcriptional processes associated with FLD and highlight the possible and emerging therapeutic strategies leveraging RBP function for FLD treatment. This article is categorized under: RNA in Disease and Development > RNA in Disease.
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Affiliation(s)
| | - Diptatanu Das
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Auinash Kalsotra
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Cancer Center @ Illinois, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute of Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA
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5
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Yang N, Yan N, Bai Z, Du S, Zhang J, Zhang L, Zhang Z. FTO attenuates LPS-induced acute kidney injury by inhibiting autophagy via regulating SNHG14/miR-373-3p/ATG7 axis. Int Immunopharmacol 2024; 128:111483. [PMID: 38215656 DOI: 10.1016/j.intimp.2023.111483] [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: 08/08/2023] [Revised: 12/15/2023] [Accepted: 12/31/2023] [Indexed: 01/14/2024]
Abstract
N6-methyladenosine (m6A) is a master driver of RNA function and implicates in the pathogenesis of renal injury. LncRNA SNHG14 is highly expressed in sepsis patients with acute kidney injury (AKI) and aggravates kidney cell dysfunction. This study aimed to explore whether demethylase FTO affect m6A methylation of SNHG14 in AKI injury and its underlying mechanism. The expression level of FTO was obviously downregulated in sepsis-associated AKI patients compared with normal controls. Mechanistically, FTO overexpression impeded SNHG14 expression by decreasing the stability of SNHG14 in an m6A-dependent manner in LPS-induced HK-2 cells. Additionally, FTO overexpression inhibited cell autophagy and apoptosis while promoting cell viability of LPS-induced HK-2 cells. Moreover, overexpression of FTO inhibited SNHG14 expression and autophagy in LPS-induced AKI mice. Functionally, SNHG14 acts as a competing endogenous RNA (ceRNA) via directly sponging miR-373-3p in LPS induced HK-2 cells. Additionally, miR-373-3p directly targets ATG7. Inhibition of SNHG14 suppresses NF-κB signaling pathway and production of inflammatory cytokines (TNF-α, IL-6, and IL-1β) via miR-373-3p/ATG7 in LPS-induced HK-2 cells. Furthermore, the SNHG14/miR-373-3p/ATG7 interaction network contributes to the regulatory effect of FTO on LPS-induced HK-2 cell viability, apoptosis and autophagy. These results suggested demethylase FTO suppressed the m6A modification of lncRNA SNHG14 and inhibits autophagy in LPS-induced AKI via regulating miR-373-3p/ATG7, which provided an important novel perspective for understanding sepsis-associated AKI and is conducive for developing new therapeutic targets and strategies.
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Affiliation(s)
- Ni Yang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Na Yan
- Cardio-cerebrovascular Hospital, Affiliated Hospital of Yan'an University, Yan'an, China
| | - Zhenghai Bai
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shuang Du
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jingjing Zhang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Li Zhang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhengliang Zhang
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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He L, Liu L, Xu D, Tu Y, Yang C, Zhang M, Wang H, Nong X. Deficiency of N6-Methyladenosine Demethylase ALKBH5 Alleviates Ultraviolet B Radiation-Induced Chronic Actinic Dermatitis via Regulating Pyroptosis. Inflammation 2024; 47:159-172. [PMID: 37740102 DOI: 10.1007/s10753-023-01901-7] [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: 05/18/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/24/2023]
Abstract
Pyroptosis is an inflammatory programmed cell death (PCD) and is reported to be associated with N6-methyladenosine (m6A) modification. This study aimed to investigate the mechanism of m6A demethylase AlkB homolog 5 (ALKBH5) in pyroptosis in the process of chronic actinic dermatitis (CAD). Changes of m6A-related genes were evaluated between CAD and normal samples using quantitative reverse-transcription polymerase chain reaction (qRT-PCR). Human keratinocytes (HaCaT cells) exposed to ultraviolet B (UVB; 10, 20, and 30 mJ/cm2), followed by evaluation of cell proliferation, cell apoptosis, inflammatory cytokines (interleukin (IL)-1β, IL-18, and tumor necrosis factor (TNF-α)), and pyroptosis-related proteins (gasdermin D (GSDMD), Caspase-1, and Caspase-4). Small interfering RNA (siRNA) targeting ALKBH5 was transfected into HaCaT cells to assess the effect of si-ALKBH5 on CAD. A CAD mice model was induced after exposure to UVB (250 mJ/cm2 per day) to confirm the role of ALKBH5 in CAD. AKKBH5 was highly expressed in CAD patients. UVB also promoted ALKBH5 expression, increased cell apoptosis, and induced the release of inflammatory cytokines (IL-1β, IL-18, and TNF-α) as well as pyroptosis-related proteins (GSDMD, Caspase-1, and Caspase-4). Silencing ALKBH5 repressed cell apoptosis and suppressed UVB-induced pyroptosis and inflammatory response. Meanwhile, silencing ALKBH5 attenuated UVB-induced skin damage of CAD mice, accompanied with the reduction in expression of inflammatory cytokines and pyroptosis-related proteins. This study helps to further understand the mechanism of ALKBH5 in CAD-induced pyroptosis and provides novel ideas for the research and management of CAD.
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Affiliation(s)
- Li He
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Lan Liu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Dan Xu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Ying Tu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Chenling Yang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Mei Zhang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Hongyun Wang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China
| | - Xiang Nong
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming City, Yunnan Province, 650032, China.
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Wu Q, Fu X, He X, Liu J, Li Y, Ou C. Experimental prognostic model integrating N6-methyladenosine-related programmed cell death genes in colorectal cancer. iScience 2024; 27:108720. [PMID: 38299031 PMCID: PMC10829884 DOI: 10.1016/j.isci.2023.108720] [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: 07/15/2023] [Revised: 10/30/2023] [Accepted: 12/11/2023] [Indexed: 02/02/2024] Open
Abstract
Colorectal cancer (CRC) intricacies, involving dysregulated cellular processes and programmed cell death (PCD), are explored in the context of N6-methyladenosine (m6A) RNA modification. Utilizing the TCGA-COADREAD/CRC cohort, 854 m6A-related PCD genes are identified, forming the basis for a robust 10-gene risk model (CDRS) established through LASSO Cox regression. qPCR experiments using CRC cell lines and fresh tissues was performed for validation. The CDRS served as an independent risk factor for CRC and showed significant associations with clinical features, molecular subtypes, and overall survival in multiple datasets. Moreover, CDRS surpasses other predictors, unveiling distinct genomic profiles, pathway activations, and associations with the tumor microenvironment. Notably, CDRS exhibits predictive potential for drug sensitivity, presenting a novel paradigm for CRC risk stratification and personalized treatment avenues.
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Affiliation(s)
- Qihui Wu
- Department of Gynecology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiaodan Fu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiaoyun He
- Departments of Ultrasound Imaging, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jiaxin Liu
- Department of Pathology, School of Basic Medical Sciences, Central South University, Changsha 410078, China
| | - Yimin Li
- Department of Pathology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Chunlin Ou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha 410008, China
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Ren Y, Li Z, Li J, Liang R, Wang Z, Bai Y, Yang Y, Tang Q, Fu Y, Zhang X, Zhang Y, Yu Y, Xiong Y. m 6 A mRNA methylation: Biological features, mechanisms, and therapeutic potentials in type 2 diabetes mellitus. Obes Rev 2023; 24:e13639. [PMID: 37732463 DOI: 10.1111/obr.13639] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/10/2023] [Accepted: 08/27/2023] [Indexed: 09/22/2023]
Abstract
As the most common internal post-transcriptional RNA modification in eukaryotic cells, N6-methyladenosine (m6 A) performs a dynamic and reversible role in a variety of biological processes mediated by methyltransferases (writers), demethylases (erasers), and m6 A binding proteins (readers). M6 A methylation enables transcriptome conversion in different signals that regulate various physiological activities and organ development. Over the past few years, emerging studies have identified that mRNA m6 A regulators defect in β-cell leads to abnormal regulation of the target mRNAs, thereby resulting in β-cell dysfunction and loss of β-cell identity and mass, which are strongly associated with type 2 diabetes mellitus (T2DM) pathogenesis. Also, mRNA m6 A modification has been implicated with insulin resistance in muscles, fat, and liver cells/tissues. In this review, we elaborate on the biological features of m6 A methylation; provide a comprehensive overview of the underlying mechanisms that how it controls β-cell function, identity, and mass as well as insulin resistance; highlight its connections to glucose metabolism and lipid metabolism linking to T2DM; and further discuss its role in diabetes complications and its therapeutic potentials for T2DM diagnosis and treatment.
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Affiliation(s)
- Yuanyuan Ren
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Zi Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Jiaoyu Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Rui Liang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Zhen Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Yiduo Bai
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Yafang Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Qian Tang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Yaolei Fu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Xiaobo Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Yu Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
| | - Yi Yu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
- School of Medicine, Northwest University, Xi'an, Shaanxi, China
| | - Yuyan Xiong
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, College of Life Sciences, Northwest University, Xi'an, Shaanxi, China
- School of Medicine, Northwest University, Xi'an, Shaanxi, China
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9
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Sharma A, Wang Y, Ge F, Chen P, Dakal TC, Carro MS, Schmidt-Wolf IGH, Maciaczyk J. Systematic integration of m6A regulators and autophagy-related genes in combination with long non-coding RNAs predicts survival in glioblastoma multiforme. Sci Rep 2023; 13:17232. [PMID: 37821547 PMCID: PMC10567764 DOI: 10.1038/s41598-023-44087-6] [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: 05/02/2023] [Accepted: 10/03/2023] [Indexed: 10/13/2023] Open
Abstract
Glioblastoma multiforme (GBM) is probably the only tumor in which a unique epigenetic alteration, namely methylation of the MGMT gene, possesses direct clinical relevance. Now with the emergence of aberrant N6 methyladenosine (m6A) modifications (the most common epigenetic modification of mRNA, closely linked to the autophagy process) in cancer, the epi-transcriptomic landscape of GBM pathobiology has been expanded. Considering this, herein, we systematically analyzed m6A regulators, assessed their correlation with autophagy-related genes (ATG), and established a long non-coding RNAs (lncRNA)-dependent prognostic signature (m6A-autophagy-lncRNAs) for GBM. Our analysis identified a novel signature of five long non-coding RNAs (lncRNAs: ITGA6-AS1, AC124248.1, NFYC-AS1, AC025171.1, and AC005229.3) associated with survival of GBM patients, and four among them clearly showed cancer-associated potential. We further validated and confirmed the altered expression of two lncRNAs (AC124248.1, AC005229.3) in GBM associated clinical samples using RT-PCR. Concerning the prognostic ability, the obtained signature determined high-/low-risk groups in GBM patients and showed sensitivity to anticancer drugs. Collectively, the m6A-autophagy-lncRNAs signature presented in the study is clinically relevant and is the first attempt to systematically predict the potential interaction between the three key determinants (m6A, autophagy, lncRNA) in cancer, particularly in GBM.
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Affiliation(s)
- Amit Sharma
- Department of Stereotacitc and Functional Neurosurgery, University Hospital of Bonn, 53127, Bonn, Germany
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital of Bonn, 53127, Bonn, Germany
| | - Yulu Wang
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital of Bonn, 53127, Bonn, Germany
| | - Fangfang Ge
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital of Bonn, 53127, Bonn, Germany
| | - Peng Chen
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital of Bonn, 53127, Bonn, Germany
| | - Tikam Chand Dakal
- Genome and Computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, India
| | - Maria Stella Carro
- Department of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisgau, Germany
| | - Ingo G H Schmidt-Wolf
- Department of Integrated Oncology, Center for Integrated Oncology (CIO), University Hospital of Bonn, 53127, Bonn, Germany
| | - Jarek Maciaczyk
- Department of Stereotacitc and Functional Neurosurgery, University Hospital of Bonn, 53127, Bonn, Germany.
- Department of Surgical Sciences, Dunedin School of Medicine, University of Otago, Dunedin, 9054, New Zealand.
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10
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Chen X, Zhang L, He Y, Huang S, Chen S, Zhao W, Yu D. Regulation of m 6A modification on ferroptosis and its potential significance in radiosensitization. Cell Death Discov 2023; 9:343. [PMID: 37714846 PMCID: PMC10504338 DOI: 10.1038/s41420-023-01645-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/28/2023] [Accepted: 09/08/2023] [Indexed: 09/17/2023] Open
Abstract
Radiotherapy is often used to treat various types of cancers, but radioresistance greatly limits the clinical efficiency. Recent studies have shown that radiotherapy can lead to ferroptotic cancer cell deaths. Ferroptosis is a new type of programmed cell death caused by excessive lipid peroxidation. The induction of ferroptosis provides a potential therapeutic strategy for radioresistance. As the most common post-transcriptional modification of mRNA, m6A methylation is widely involved in the regulation of various physiopathological processes by regulating RNA function. Dynamic m6A modification controlled by m6A regulatory factors also affects the susceptibility of cells to ferroptosis, thereby determining the radiosensitivity of tumor cells to radiotherapy. In this review, we summarize the mechanism and significance of radiotherapy induced ferroptosis, analyze the regulatory characteristics of m6A modification on ferroptosis, and discuss the possibility of radiosensitization by enhancing m6A-mediated ferroptosis. Clarifying the regulation of m6A modification on ferroptosis and its significance in the response of tumor cells to radiotherapy will help us identify novel targets to improve the efficacy of radiotherapy and reduce or overcome radioresistance.
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Affiliation(s)
- Xun Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, People's Republic of China
| | - Lejia Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, People's Republic of China
| | - Yi He
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, People's Republic of China
| | - Siyuan Huang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, People's Republic of China
| | - Shangwu Chen
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, State Key Laboratory for Biocontrol, Department of Biochemistry, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China
| | - Wei Zhao
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, People's Republic of China.
| | - Dongsheng Yu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, 510055, People's Republic of China.
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11
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Suga N, Ikeda Y, Yoshikawa S, Taniguchi K, Sawamura H, Matsuda S. In Search of a Function for the N6-Methyladenosine in Epitranscriptome, Autophagy and Neurodegenerative Diseases. Neurol Int 2023; 15:967-979. [PMID: 37606395 PMCID: PMC10443253 DOI: 10.3390/neurolint15030062] [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: 06/23/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
Changes in epitranscriptome with N6-methyladenine (m6A) modification could be involved in the development of multiple diseases, which might be a prevalent modification of messenger RNAs (mRNAs) in eukaryotes. The m6A modification might be performed through the action of methyltransferases, demethylases, and methylation-binding proteins. Importantly, the m6A methylation may be associated with various neurological disorders including Alzheimer's disease (AD), Parkinson's disease (PD), depression, aging-related diseases, and/or aging itself. In addition, the m6A methylation might functionally regulate the eukaryotic transcriptome by influencing the splicing, export, subcellular localization, translation, stability, and decay of mRNAs. Neurodegenerative diseases may possess a wide variety of phenotypes, depending on the neurons that degenerate on occasion. Interestingly, an increasing amount of evidence has indicated that m6A modification could modulate the expression of autophagy-related genes and promote autophagy in neuronal cells. Oxidative stresses such as reactive oxygen species (ROS) could stimulate the m6A RNA methylation, which may also be related to the regulation of autophagy and/or the development of neurodegenerative diseases. Both m6A modification and autophagy could also play critical roles in regulating the health condition of neurons. Therefore, a comprehensive understanding of the m6A and autophagy relationship in human diseases may benefit in developing therapeutic strategies in the future. This paper reviews advances in the understanding of the regulatory mechanisms of m6A modification in the occurrence and development of neurodegenerative diseases and/or aging, discussing the possible therapeutic procedures related to mechanisms of m6A RNA methylation and autophagy.
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Affiliation(s)
| | | | | | | | | | - Satoru Matsuda
- Department of Food Science and Nutrition, Nara Women’s University, Kita-Uoya Nishimachi, Nara 630-8506, Japan
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12
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Wang X, Kong X, Feng X, Jiang DS. Effects of DNA, RNA, and Protein Methylation on the Regulation of Ferroptosis. Int J Biol Sci 2023; 19:3558-3575. [PMID: 37497000 PMCID: PMC10367552 DOI: 10.7150/ijbs.85454] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023] Open
Abstract
Ferroptosis is a form of programmed cell death characterized by elevated intracellular ferrous ion levels and increased lipid peroxidation. Since its discovery and characterization in 2012, considerable progress has been made in understanding the regulatory mechanisms and pathophysiological functions of ferroptosis. Recent findings suggest that numerous organ injuries (e.g., ischemia/reperfusion injury) and degenerative pathologies (e.g., aortic dissection and neurodegenerative disease) are driven by ferroptosis. Conversely, insufficient ferroptosis has been linked to tumorigenesis. Furthermore, a recent study revealed the effect of ferroptosis on hematopoietic stem cells under physiological conditions. The regulatory mechanisms of ferroptosis identified to date include mainly iron metabolism, such as iron transport and ferritinophagy, and redox systems, such as glutathione peroxidase 4 (GPX4)-glutathione (GSH), ferroptosis-suppressor-protein 1 (FSP1)-CoQ10, FSP1-vitamin K (VK), dihydroorotate dehydrogenase (DHODH)-CoQ, and GTP cyclohydrolase 1 (GCH1)-tetrahydrobiopterin (BH4). Recently, an increasing number of studies have demonstrated the important regulatory role played by epigenetic mechanisms, especially DNA, RNA, and protein methylation, in ferroptosis. In this review, we provide a critical analysis of the molecular mechanisms and regulatory networks of ferroptosis identified to date, with a focus on the regulatory role of DNA, RNA, and protein methylation. Furthermore, we discuss some debated findings and unanswered questions that should be the foci of future research in this field.
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Affiliation(s)
- Xiancan Wang
- Department of Cardiovascular Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Xianghai Kong
- Department of Intervention & Vascular Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and echnology, Wuhan, 430014, Hubei, China
| | - Xin Feng
- Division of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ding-Sheng Jiang
- Division of Cardiovascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, Hubei, China
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13
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Ji C, Tao Y, Li X, Wang J, Chen J, Aniagu S, Jiang Y, Chen T. AHR-mediated m 6A RNA methylation contributes to PM 2.5-induced cardiac malformations in zebrafish larvae. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131749. [PMID: 37270964 DOI: 10.1016/j.jhazmat.2023.131749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/11/2023] [Accepted: 05/29/2023] [Indexed: 06/06/2023]
Abstract
A growing body of evidence indicates that ambient fine particle matter (PM2.5) exposure inhibits heart development, but the underlying mechanisms remain elusive. We hypothesized that m6A RNA methylation plays an important role in the cardiac developmental toxicity of PM2.5. In this study, we demonstrated that extractable organic matter (EOM) from PM2.5 significantly decreased global m6A RNA methylation levels in the heart of zebrafish larvae, which were restored by the methyl donor, betaine. Betaine also attenuated EOM-induced ROS overgeneration, mitochondrial damage, apoptosis and heart defects. Furthermore, we found that the aryl hydrocarbon receptor (AHR), which was activated by EOM, directly repressed the transcription of methyltransferases mettl14 and mettl3. EOM also induced genome-wide m6A RNA methylation changes, which led us to focus more on the aberrant m6A methylation changes that were subsequently alleviated by the AHR inhibitor, CH223191. In addition, we found that the expression levels of traf4a and bbc3, two apoptosis related genes, were upregulated by EOM but restored to control levels by the forced expression of mettl14. Moreover, knockdown of either traf4a or bbc3 attenuated EOM-induced ROS overproduction and apoptosis. In conclusion, our results indicate that PM2.5 induces m6A RNA methylation changes via AHR-mediated mettl14 downregulation, which upregulates traf4a and bbc3, leading to apoptosis and cardiac malformations.
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Affiliation(s)
- Cheng Ji
- Suzhou Medical College, Soochow University, Suzhou, China
| | - Yizhou Tao
- Suzhou Medical College, Soochow University, Suzhou, China
| | - Xiaoxiao Li
- Suzhou Medical College, Soochow University, Suzhou, China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Jin Wang
- Suzhou Medical College, Soochow University, Suzhou, China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Jin Chen
- Suzhou Medical College, Soochow University, Suzhou, China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China
| | - Stanley Aniagu
- Toxicology, Risk Assessment, and Research Division, Texas Commission on Environmental Quality, 12015 Park 35 Cir, Austin, TX, USA
| | - Yan Jiang
- Suzhou Medical College, Soochow University, Suzhou, China.
| | - Tao Chen
- Suzhou Medical College, Soochow University, Suzhou, China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Soochow University, Suzhou, China.
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14
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Zhen L, Pan W. ALKBH5 inhibits the SIRT3/ACC1 axis to regulate fatty acid metabolism via an m6A-IGF2BP1-dependent manner in cervical squamous cell carcinoma. Clin Exp Pharmacol Physiol 2023; 50:380-392. [PMID: 36705046 DOI: 10.1111/1440-1681.13754] [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: 11/16/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 01/28/2023]
Abstract
Cervical cancer (CC) is the most common malignancy of the female reproductive system, among which cervical squamous cell carcinoma (CESC) is the most common type. The demethylase ALKBH5 has been previously revealed to be downregulated in CC tissue. N6 methyladenine (m6A) is the most common modification in eukaryotic RNAs and is involved in modulating tumour progression. Therefore, we attempted to clarify the ALKBH5 role and mechanism underlying CESC progression. In CESC, patient tissue and control tissue m6A levels were measured. Reverse transcription quantitative real-time polymerase chain reaction, western blotting and immunochemistry were used to measure ALKBH5 levels. A correlation between CESC patient survival and ALKBH5 levels was evaluated. Wound healing, transwell and colony formation assays were used to detect CESC cellular behaviours. Corresponding kits and BODIPY staining were used to detect CESC lipid metabolism. Bioinformatics, immunoprecipitation, RNA pulldown and RNA immunoprecipitation assays as well as half-life measurements were used to assess the association and mechanism of ALKBH5 with silent mating type information regulation 2 homologue 3 (SIRT3), acetyl-CoA carboxylase 1 (ACC1) and insulin-like growth factor 2 mRNA binding protein 1 (IGF2BP1). The m6A demethylase ALKBH5 was depleted in CESC tissue and cells, and a low level of ALKBH5 predicted an unfavourable prognosis in CESC patients. ALKBH5 overexpression suppressed CESC growth and lipid metabolism in vitro and CESC tumour growth in vivo, and ACC1 overexpression rescued these changes. ALKBH5 downregulated ACC1 levels in CESC cells by facilitating SIRT3 methylation to repress ACC1 deacetylation. ALKBH5 destabilized SIRT3 to downregulate SIRT3 levels in CESCs in an m6A-IGF2BP1-dependent manner. ALKBH5 demethylates and destabilizes SIRT3 in an m6A-IGF2BP1-dependent manner, repressing CESC growth, lipid metabolism and tumorigenesis by downregulating ACC1.
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Affiliation(s)
- Lan Zhen
- Department of Gynecology Area 2, Fujian Maternity and Child Health Hospital, Fuzhou, China
| | - Wuyuan Pan
- Department of Gynecology Area 2, Fujian Maternity and Child Health Hospital, Fuzhou, China
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15
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Mei Z, Mou Y, Zhang N, Liu X, He Z, Gu S. Emerging Mutual Regulatory Roles between m 6A Modification and microRNAs. Int J Mol Sci 2023; 24:ijms24010773. [PMID: 36614216 PMCID: PMC9821650 DOI: 10.3390/ijms24010773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/29/2022] [Accepted: 11/04/2022] [Indexed: 01/03/2023] Open
Abstract
N6-metyladenosine (m6A), one of the most common RNA methylation modifications in mammals, has attracted extensive attentions owing to its regulatory roles in a variety of physiological and pathological processes. As a reversible epigenetic modification on RNAs, m6A is dynamically mediated by the functional interplay among the regulatory proteins of methyltransferases, demethylases and methyl-binding proteins. In recent years, it has become increasingly clear that m6A modification is associated with the production and function of microRNAs (miRNAs). In this review, we summarize the specific kinds of m6A modification methyltransferases, demethylases and methyl-binding proteins. In particular, we focus on describing the roles of m6A modification and its regulatory proteins in the production and function of miRNAs in a variety of pathological and physiological processes. More importantly, we further discuss the mediating mechanisms of miRNAs in m6A modification and its regulatory proteins during the occurrence and development of various diseases.
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16
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Alasar AA, Tüncel Ö, Gelmez AB, Sağlam B, Vatansever İE, Akgül B. Genomewide m 6A Mapping Uncovers Dynamic Changes in the m 6A Epitranscriptome of Cisplatin-Treated Apoptotic HeLa Cells. Cells 2022; 11:cells11233905. [PMID: 36497162 PMCID: PMC9738315 DOI: 10.3390/cells11233905] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 12/07/2022] Open
Abstract
Cisplatin (CP), which is a conventional cancer chemotherapeutic drug, induces apoptosis by modulating a diverse array of gene regulatory mechanisms. However, cisplatin-mediated changes in the m6A methylome are unknown. We employed an m6A miCLIP-seq approach to investigate the effect of m6A methylation marks under cisplatin-mediated apoptotic conditions on HeLa cells. Our high-resolution approach revealed numerous m6A marks on 972 target mRNAs with an enrichment on 132 apoptotic mRNAs. We tracked the fate of differentially methylated candidate mRNAs under METTL3 knockdown and cisplatin treatment conditions. Polysome profile analyses revealed perturbations in the translational efficiency of PMAIP1 and PHLDA1 transcripts. Congruently, PMAIP1 amounts were dependent on METTL3. Additionally, cisplatin-mediated apoptosis was sensitized by METTL3 knockdown. These results suggest that apoptotic pathways are modulated by m6A methylation events and that the METTL3-PMAIP1 axis modulates cisplatin-mediated apoptosis in HeLa cells.
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Affiliation(s)
| | | | | | | | | | - Bünyamin Akgül
- Correspondence: ; Tel.: +011-90-232-7507316; Fax: +011-90-232-7507302
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17
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Zhang D, Wornow S, Peehl DM, Rankin EB, Brooks JD. The controversial role and therapeutic development of the m6A demethylase FTO in renal cell carcinoma. Transl Oncol 2022; 25:101518. [PMID: 36037557 PMCID: PMC9440419 DOI: 10.1016/j.tranon.2022.101518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 11/22/2022] Open
Abstract
Fat mass and obesity-associated (FTO) protein, the first m6A demethylase identified in 2011, regulates multiple aspects of RNA biology including splicing, localization, stability, and translation. Accumulating data show that FTO is involved in numerous physiological processes and is implicated in multiple cancers including renal cell carcinoma (RCC). However, the exact role of FTO in RCC remains controversial. Some studies demonstrated that decreased FTO expression was associated with aggressive clinical features and shorter overall survival in clear cell RCC (ccRCC) patients, while others found that FTO inhibition selectively reduced the growth and survival of VHL-deficient ccRCC cells in vitro and in vivo. Here, we review the evidence supporting either a promoting or suppressive role of FTO in kidney cancers, the mechanisms of action of FTO, and recent progress in developing FTO inhibitors.
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Affiliation(s)
- Dalin Zhang
- Department of Urology, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Sarah Wornow
- Undergraduate Student Program, Brown University, Providence, RI, USA
| | - Donna M Peehl
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Erinn B Rankin
- Department of Radiation Oncology, School of Medicine, Stanford University, Stanford, CA, USA
| | - James D Brooks
- Department of Urology, School of Medicine, Stanford University, Stanford, CA 94305, USA.
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18
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Wen X, Wang J, Wang Q, Liu P, Zhao H. Interaction between N6-methyladenosine and autophagy in the regulation of bone and tissue degeneration. Front Bioeng Biotechnol 2022; 10:978283. [PMID: 36072293 PMCID: PMC9443517 DOI: 10.3389/fbioe.2022.978283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
Bone and tissue degeneration are the most common skeletal disorders that seriously affect people’s quality of life. N6-methyladenosine (m6A) is one of the most common RNA modifications in eukaryotic cells, affecting the alternative splicing, translation, stability and degradation of mRNA. Interestingly, increasing number of evidences have indicated that m6A modification could modulate the expression of autophagy-related (ATG) genes and promote autophagy in the cells. Autophagy is an important process regulating intracellular turnover and is evolutionarily conserved in eukaryotes. Abnormal autophagy results in a variety of diseases, including cardiomyopathy, degenerative disorders, and inflammation. Thus, the interaction between m6A modification and autophagy plays a prominent role in the onset and progression of bone and tissue degeneration. In this review, we summarize the current knowledge related to the effect of m6A modification on autophagy, and introduce the role of the crosstalk between m6A modification and autophagy in bone and tissue degeneration. An in-depth knowledge of the above crosstalk may help to improve our understanding of their effects on bone and tissue degeneration and provide novel insights for the future therapeutics.
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19
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N(6)-methyladenosine modification: A vital role of programmed cell death in myocardial ischemia/reperfusion injury. Int J Cardiol 2022; 367:11-19. [PMID: 36002042 DOI: 10.1016/j.ijcard.2022.08.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 07/08/2022] [Accepted: 08/19/2022] [Indexed: 11/20/2022]
Abstract
N(6)-methyladenosine (m6A) modification is closely associated with myocardial ischemia/reperfusion injury (MIRI). As the most common modification among RNA modifications, the reversible m6A modification is processed by methylase ("writers") and demethylase ("erasers"). The biological effects of RNA modified by m6A are regulated under the corresponding RNA binding proteins (RBPs) ("readers"). m6A modification regulates the whole process of RNA, including transcription, processing, splicing, nuclear export, stability, degradation, and translation. Programmed cell death (PCD) is a regulated mechanism that maintains the internal environment's stability. PCD plays an essential role in MIRI, including apoptosis, autophagy, pyroptosis, ferroptosis, and necroptosis. However, the relationship between PCD modified with m6A and MIRI is still not clear. This review summarizes the regulators of m6A modification and their bioeffects on PCD in MIRI.
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20
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Shen H, Xie K, Li M, Yang Q, Wang X. N 6-methyladenosine (m 6A) methyltransferase METTL3 regulates sepsis-induced myocardial injury through IGF2BP1/HDAC4 dependent manner. Cell Death Dis 2022; 8:322. [PMID: 35840562 PMCID: PMC9287338 DOI: 10.1038/s41420-022-01099-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/16/2022] [Accepted: 06/21/2022] [Indexed: 11/09/2022]
Abstract
Recent studies have identified that N6-methyladenosine (m6A) extensively participates in the myocardial injury pathophysiological process. However, the role of m6A on sepsis-induced myocardial injury is still unclear. Here, we investigated the functions and mechanism of m6A methyltransferase METTL3 for septic myocardial injury. Results illustrated that the m6A modification level and METTL3 up-regulated in the lipopolysaccharide (LPS)-induced cardiomyocytes (H9C2 cells). Methylated RNA immunoprecipitation sequencing (MeRIP-Seq) revealed the m6A profile of the septic myocardial injury cellular model. Functionally, METTL3 knockdown repressed the inflammatory damage of cardiomyocytes induced by LPS. Mechanistically, we found that HDAC4 had remarkable m6A modification sites on its 3'-UTR genome, acting as the downstream target of METTL3. Besides, m6A reader IGF2BP1 recognized the m6A modification sites on HDAC4 mRNA and enhanced its RNA stability. In conclusion, the findings illustrated a role of METTL3/IGF2BP1/m6A/HDAC4 axis on sepsis-induced myocardial injury, which might provide novel therapeutic strategy for septic myocardial injury.
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Affiliation(s)
- Hao Shen
- Department of Intensive Care Unit, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Keliang Xie
- Department of Intensive Care Unit, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Miaomiao Li
- Department of Pediatric surgery, Tianjin Children's Hospital, Tianjin, 300074, China
| | - Qianyu Yang
- Department of Pediatric surgery, Tianjin Children's Hospital, Tianjin, 300074, China
| | - Xiaoye Wang
- Department of Intensive Care Unit, Tianjin Medical University General Hospital, Tianjin, 300052, China.
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21
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Huang YY, Zhang XY, Zhu P, Ji L. Development of clustered regularly interspaced short palindromic repeats/CRISPR-associated technology for potential clinical applications. World J Clin Cases 2022; 10:5934-5945. [PMID: 35949837 PMCID: PMC9254185 DOI: 10.12998/wjcc.v10.i18.5934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/10/2022] [Accepted: 04/24/2022] [Indexed: 02/06/2023] Open
Abstract
The clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated (Cas) proteins constitute the innate adaptive immune system in several bacteria and archaea. This immune system helps them in resisting the invasion of phages and foreign DNA by providing sequence-specific acquired immunity. Owing to the numerous advantages such as ease of use, low cost, high efficiency, good accuracy, and a diverse range of applications, the CRISPR-Cas system has become the most widely used genome editing technology. Hence, the advent of the CRISPR/Cas technology highlights a tremendous potential in clinical diagnosis and could become a powerful asset for modern medicine. This study reviews the recently reported application platforms for screening, diagnosis, and treatment of different diseases based on CRISPR/Cas systems. The limitations, current challenges, and future prospectus are summarized; this article would be a valuable reference for future genome-editing practices.
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Affiliation(s)
- Yue-Ying Huang
- School of Medical Laboratory, Weifang Medical University, Weifang 261053, Shandong Province, China
| | - Xiao-Yu Zhang
- School of Medical Laboratory, Weifang Medical University, Weifang 261053, Shandong Province, China
| | - Ping Zhu
- School of Medical Laboratory, Weifang Medical University, Weifang 261053, Shandong Province, China
| | - Ling Ji
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen 518035, Guangdong Province, China
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22
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Wang H, Wang Q, Chen J, Chen C. Association Among the Gut Microbiome, the Serum Metabolomic Profile and RNA m6A Methylation in Sepsis-Associated Encephalopathy. Front Genet 2022; 13:859727. [PMID: 35432460 PMCID: PMC9006166 DOI: 10.3389/fgene.2022.859727] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 02/14/2022] [Indexed: 12/14/2022] Open
Abstract
Objective: To investigate the relationship among the gut microbiome, serum metabolomic profile and RNA m6A methylation in patients with sepsis-associated encephalopathy (SAE), 16S rDNA technology, metabolomics and gene expression validation were applied. Methods: Serum and feces were collected from patients with and without (SAE group and non-SAE group, respectively, n = 20). The expression of serum markers and IL-6 was detected by enzyme-linked immunosorbent assay (ELISA), and blood clinical indicators were detected using a double antibody sandwich immunochemiluminescence method. The expression of RNA m6A regulator were checked by Q-RTPCR. The gut microbiome was analyzed by 16S rDNA sequencing and the metabolite profile was revealed by liquid chromatography-mass spectrometry (LC-MS/MS). Results: In the SAE group, the IL-6, ICAM-5 and METTL3 levels were significantly more than those in the non-SAE group, while the FTO levels were significantly decreased in the SAE group. The diversity was decreased in the SAE gut microbiome, as characterized by a profound increase in commensals of the Acinetobacter, Methanobrevibacter, and Syner-01 genera, a decrease in [Eubacterium]_hallii_group, while depletion of opportunistic organisms of the Anaerofilum, Catenibacterium, and Senegalimassilia genera were observed in both groups. The abundance of Acinetobacter was positively correlated with the expression of METTL3. The changes between the intestinal flora and the metabolite profile showed a significant correlation. Sphingorhabdus was negatively correlated with 2-ketobutyric acid, 9-decenoic acid, and l-leucine, and positively correlated with Glycyl-Valine [Eubacterium]_hallii_group was positively correlated with 2-methoxy-3-methylpyazine, acetaminophen, and synephrine acetonide. Conclusion: The gut microbiota diversity was decreased. The serum metabolites and expression of RNA m6A regulators in PBMC were significantly changed in the SAE group compared to the non-SAE group. The results revealed that serum and fecal biomarkers could be used for SAE screening.
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