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Chokkalla AK, Pajdzik K, Dou X, Dai Q, Mehta SL, Arruri V, Vemuganti R. Dysregulation of the Epitranscriptomic Mark m 1A in Ischemic Stroke. Transl Stroke Res 2023; 14:806-810. [PMID: 35737185 DOI: 10.1007/s12975-022-01056-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
Abstract
Methylation of adenosine at N1 position yields N1-methyladenosine (m1A), which is an epitranscriptomic modification that regulates mRNA metabolism. Recent studies showed that altered m1A methylation promotes acute and chronic neurological diseases. We currently evaluated the effect of focal ischemia on cerebral m1A methylome and its machinery. Adult male C57BL/6J mice were subjected to transient middle cerebral artery occlusion, and the peri-infarct cortex was analyzed at 12 h and 24 h of reperfusion. The bulk abundance of m1A was measured by mass spectrometry and dot blot, and transcriptome-wide m1A alterations were profiled using antibody-independent m1A-quant-seq. Expression of the m1A writers and erasers was estimated by real-time PCR. Ischemia significantly decreased m1A levels and concomitantly upregulated m1A demethylase alkB homolog 3 at 24 h of reperfusion compared to sham. Transcriptome-wide profiling showed differential m1A methylation at 14 sites (8 were hypo- and 6 were hypermethylated). Many of those are located in the 3'-UTRs of unannotated transcripts proximal to the genes involved in regulating protein complex assembly, circadian rhythms, chromatin remodeling, and chromosome organization. Using several different approaches, we show for the first time that m1A epitranscriptomic modification in RNA is highly sensitive to cerebral ischemia.
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Affiliation(s)
- Anil K Chokkalla
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, 53792, USA
| | - Kinga Pajdzik
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA
| | - Xiaoyang Dou
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA
| | - Qing Dai
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA
| | - Suresh L Mehta
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, 53792, USA
| | - Vijay Arruri
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, 53792, USA
| | - Raghu Vemuganti
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, 53792, USA.
- William S. Middleton Memorial Veteran Administration Hospital, Madison, WI, USA.
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Huo XX, Wang SJ, Song H, Li MD, Yu H, Wang M, Gong HX, Qiu XT, Zhu YF, Zhang JY. Roles of Major RNA Adenosine Modifications in Head and Neck Squamous Cell Carcinoma. Front Pharmacol 2021; 12:779779. [PMID: 34899345 PMCID: PMC8657411 DOI: 10.3389/fphar.2021.779779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/09/2021] [Indexed: 11/13/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer malignancy worldwide and is known to have poor prognosis. The pathogenesis behind the development of HNSCC is not fully understood. Modifications on RNA are involved in many pathophysiological processes, such as tumor development and inflammation. Adenosine-related RNA modifications have shown to be linked to cancer and may play a role in cancer occurrence and development. To date, there are at least 170 different chemical RNA modifications that modify coding and non-coding RNAs (ncRNAs). These modifications affect RNA stability and transcription efficiency. In this review, we focus on the current understanding of the four major RNA adenosine modifications (N6-Methyladenosine, N1-Methyladenosine, Alternative Polyadenylation Modification and A-to-I RNA editing) and their potential molecular mechanisms related to HNSCC development and progression. We also touch on how these RNA modifications affect treatment of HNSCCs.
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Affiliation(s)
- Xing-Xing Huo
- Experimental Center of Clinical Research, Scientific Research Department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Shu-Jie Wang
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Hang Song
- Department of Biochemistry and Molecular Biology, School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Ming-de Li
- Experimental Center of Clinical Research, Scientific Research Department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Hua Yu
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Meng Wang
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Hong-Xiao Gong
- Experimental Center of Clinical Research, Scientific Research Department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Xiao-Ting Qiu
- Experimental Center of Clinical Research, Scientific Research Department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Yong-Fu Zhu
- Experimental Center of Clinical Research, Scientific Research Department, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Jian-Ye Zhang
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
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Abstract
Similar to epigenetic DNA and histone modifications, epitranscriptomic modifications (RNA modifications) have emerged as crucial regulators in temporal and spatial gene expression during eukaryotic development. To date, over 170 diverse types of chemical modifications have been identified upon RNA nucleobases. Some of these post-synthesized modifications can be reversibly installed, removed, and decoded by their specific cellular components and play critical roles in different biological processes. Accordingly, dysregulation of RNA modification effectors is tightly orchestrated with developmental processes. Here, we particularly focus on three well-studied RNA modifications, including N6-methyladenosine (m6A), 5-methylcytosine (m5C), and N1-methyladenosine (m1A), and summarize recent knowledge of underlying mechanisms and critical roles of these RNA modifications in stem cell fate determination, embryonic development, and cancer progression, providing a better understanding of the whole association between epitranscriptomic regulation and mammalian development.
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