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Wang T, Yan W, Pei S, Zhang M, Zhang Q, Teng Y, Liu G, Wang J, Yan S, Ji B. Transcriptomic Profiling of circRNAs in rat Hippocampus after Deep Hypothermic Circulatory Arrest. Int J Med Sci 2023; 20:627-638. [PMID: 37082735 PMCID: PMC10110479 DOI: 10.7150/ijms.82503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/15/2023] [Indexed: 04/22/2023] Open
Abstract
Neurologic abnormalities occurring after deep hypothermic circulatory arrest (DHCA) remain a significant concern. However, molecular mechanisms leading to DHCA-related cerebral injury are still ill-defined. Circular RNAs (circRNAs) are a class of covalently closed non-coding RNAs and can play important roles in different types of cerebral injury. This study aimed to investigate circRNAs expression profiles in rat hippocampus after DHCA and explore the potential functions of circRNAs in DHCA-related cerebral injury. Hence, the DHCA procedure in rats was established and a transcriptomic profiling of circRNAs in rat hippocampus was done. As a result, a total of 35192 circRNAs were identified. Among them, 339 circRNAs were dysregulated, including 194 down-regulated and 145 up-regulated between DHCA and sham group. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses were performed based on the host genes of all dysregulated circRNAs. Also, 4 circRNAs were validated by RT-qPCR (rno_circ_0028462, rno_circ_0037165, rno_circ_0045161 and rno_circ_0019047). Then a circRNA-microRNA (miRNA) interaction network involving 4 candidate circRNAs was constructed. Furthermore, functional enrichment analysis of the miRNA-targeting mRNAs of every candidate circRNA was conducted to gain insight into each of the 4 circRNAs. Our study provided a better understanding of circRNAs in the mechanisms of DHCA-related cerebral injury and some potential targets for neuroprotection.
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Affiliation(s)
- Tianlong Wang
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Weidong Yan
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Shengqiang Pei
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Mingru Zhang
- Department of Anaesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qiaoni Zhang
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Yuan Teng
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Gang Liu
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Jian Wang
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Shujie Yan
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Bingyang Ji
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
- ✉ Corresponding author: Bingyang Ji, MD, PhD, Department of Cardiopulmonary Bypass, National Center for Cardiovascular Disease and Fuwai Hospital, No. 167 Beilishi Road, Xicheng District, 10010, Beijing, China. Phone: +86-10-88398285.
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Li YA, Liu ZG, Zhang YP, Hou HT, He GW, Xue LG, Yang Q, Liu XC. Differential expression profiles of circular RNAs in the rat hippocampus after deep hypothermic circulatory arrest. Artif Organs 2021; 45:866-880. [PMID: 33432632 DOI: 10.1111/aor.13910] [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: 11/11/2020] [Revised: 12/16/2020] [Accepted: 01/07/2021] [Indexed: 11/28/2022]
Abstract
Neurological dysfunction commonly occurs after cardiac surgery with deep hypothermic circulatory arrest (DHCA). The mechanisms underlying DHCA-associated brain injury remain poorly understood. This study determined the changes in expression profiles of circular RNAs (circRNAs) in the hippocampus in rats that underwent DHCA, with an attempt to explore the potential role of circRNAs in the brain injury associated with DHCA. Adult male Sprague Dawley rats were subjected to cardiopulmonary bypass with DHCA. Brain injury was evaluated by neurological severity scores and histological as well as transmission electron microscope examinations. The expression profiles of circRNAs in the hippocampal tissues were screened by microarray. Quantitative real-time PCR (RT-qPCR) was used to validate the reliability of the microarray results. Bioinformatic algorithms were applied to construct a competing endogenous RNA (ceRNA) network, and Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed to explore the potential biological roles of the circRNAs. Out of 14 145 circRNAs screened, 56 were differentially expressed in the hippocampus between the DHCA and sham-operated rats, including 30 upregulated and 26 downregulated circRNAs. The expression changes of six selected circRNAs (upregulated: rno_circRNA_011190, rno_circRNA_012988, rno_circRNA_000544; downregulated: rno_circRNA_010393, rno_circRNA_012043, rno_circRNA_015149) were further confirmed by RT-qPCR. Bioinformatics analysis showed the enrichment of these confirmed circRNAs and their potential target mRNAs in several KEGG pathways including histidine metabolism, adipocytokine signaling, and cAMP signaling. By revealing the change expression profiles of circRNAs in the brain after DHCA, this study indicates possible involvements of these dysregulated circRNAs in brain injury and suggests a potential of targeting circRNAs for prevention and treatment of neurological dysfunction associated with DHCA.
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Affiliation(s)
- Yi-Ai Li
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
| | - Zhi-Gang Liu
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
| | - You-Peng Zhang
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
| | - Hai-Tao Hou
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
| | - Guo-Wei He
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China.,Department of Cardiac Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, China.,School of Pharmacy, Wannan Medical College, Wuhu, China.,Department of Surgery, Oregon Health and Science University, Portland, OR, USA
| | - Lan-Gang Xue
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
| | - Qin Yang
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
| | - Xiao-Cheng Liu
- Center for Basic Medical Research & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College, Tianjin, China
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Linardi D, Walpoth B, Mani R, Murari A, Tessari M, Hoxha S, Anderloni M, Decimo I, Dolci S, Nicolato E, Bontempi P, Merigo F, Luciani GB, Faggian G, Rungatscher A. Slow versus fast rewarming after hypothermic circulatory arrest: effects on neuroinflammation and cerebral oedema. Eur J Cardiothorac Surg 2020; 58:792-800. [DOI: 10.1093/ejcts/ezaa143] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 03/03/2020] [Accepted: 03/10/2020] [Indexed: 01/08/2023] Open
Abstract
AbstractOBJECTIVESAmong the factors that could determine neurological outcome after hypothermic circulatory arrest (HCA) rewarming is rarely considered. The optimal rewarming rate is still unknown. The goal of this study was to investigate the effects of 2 different protocols for rewarming after HCA on neurological outcome in an experimental animal model.METHODSForty-four Sprague Dawley rats were cooled to 19 ± 1°C body core temperature by cardiopulmonary bypass (CPB). HCA was maintained for 60 min. Animals were randomized to receive slow (90 min) or fast (45 min) assisted rewarming with CPB to a target temperature of 35°C. After a total of 90 min of reperfusion in both groups, brain samples were collected and analysed immunohistochemically and with immunofluorescence. In 10 rats, magnetic resonance imaging was performed after 2 and after 24 h to investigate cerebral perfusion and cerebral oedema.RESULTSInterleukin 6, chemokine (C-C motif) ligand 5, intercellular adhesion molecule 1 and tumour necrosis factor α in the hippocampus are significantly less expressed in the slow rewarming group, and microglia cells are significantly less activated in the slow rewarming group. Magnetic resonance imaging analysis demonstrated better cerebral perfusion and less water content in brains that underwent slow rewarming at 2 and 24 h.CONCLUSIONSSlow rewarming after HCA might be superior to fast rewarming in neurological outcome. The present experimental study demonstrated reduction in the inflammatory response, reduction of inflammatory cell activation in the brain, enhancement of cerebral blood flow and reduction of cerebral oedema when slow rewarming was applied.
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Affiliation(s)
- Daniele Linardi
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | - Beat Walpoth
- Department of Cardiovascular Surgery, University of Geneva, Geneva, Switzerland
| | - Romel Mani
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | - Angela Murari
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | | | - Stiljan Hoxha
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | - Marco Anderloni
- Department of Cardiac Surgery, University of Verona, Verona, Italy
| | - Ilaria Decimo
- Department of Pharmacology, University of Verona, Verona, Italy
| | - Sissi Dolci
- Department of Pharmacology, University of Verona, Verona, Italy
| | - Elena Nicolato
- Department of Anatomy, University of Verona, Verona, Italy
| | | | - Flavia Merigo
- Department of Anatomy, University of Verona, Verona, Italy
| | | | - Giuseppe Faggian
- Department of Cardiac Surgery, University of Verona, Verona, Italy
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Guan X, Yao Y, Bao G, Wang Y, Zhang A, Zhong X. Diagnostic model of combined ceRNA and DNA methylation related genes in esophageal carcinoma. PeerJ 2020; 8:e8831. [PMID: 32266120 PMCID: PMC7120044 DOI: 10.7717/peerj.8831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
Esophageal cancer is a common malignant tumor in the world, and the aim of this study was to screen key genes related to the development of esophageal cancer using a variety of bioinformatics analysis tools and analyze their biological functions. The data of esophageal squamous cell carcinoma from the Gene Expression Omnibus (GEO) were selected as the research object, processed and analyzed to screen differentially expressed microRNAs (miRNAs) and differential methylation genes. The competing endogenous RNAs (ceRNAs) interaction network of differentially expressed genes was constructed by bioinformatics tools DAVID, String, and Cytoscape. Biofunctional enrichment analysis was performed using Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG). The expression of the screened genes and the survival of the patients were verified. By analyzing GSE59973 and GSE114110, we found three down-regulated and nine up-regulated miRNAs. The gene expression matrix of GSE120356 was calculated by Pearson correlation coefficient, and the 11696 pairs of ceRNA relation were determined. In the ceRNA network, 643 lncRNAs and 147 mRNAs showed methylation difference. Functional enrichment analysis showed that these differentially expressed genes were mainly concentrated in the FoxO signaling pathway and were involved in the corresponding cascade of calcineurin. By analyzing the clinical data in The Cancer Genome Atlas (TCGA) database, it was found that four lncRNAs had an important impact on the survival and prognosis of esophageal carcinoma patients. QRT-PCR was also conducted to identify the expression of the key lncRNAs (RNF217-AS1, HCP5, ZFPM2-AS1 and HCG22) in ESCC samples. The selected key genes can provide theoretical guidance for further research on the molecular mechanism of esophageal carcinoma and the screening of molecular markers.
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Affiliation(s)
- Xiaojiao Guan
- Department of Pathology, Second Affiliated Hospital, China Medical University, Shenyang, China
| | - Yao Yao
- Department of Thoracic Surgery, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Guangyao Bao
- Department of Thoracic Surgery, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Yue Wang
- First Affiliated Hospital, China Medical University, Shenyang, China
| | - Aimeng Zhang
- First Affiliated Hospital, China Medical University, Shenyang, China
| | - Xinwen Zhong
- Department of Thoracic Surgery, First Affiliated Hospital, China Medical University, Shenyang, China
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Huang YL, Zeng NX, Chen J, Niu J, Luo WL, Liu P, Yan C, Wu LL. Dynamic changes of behaviors, dentate gyrus neurogenesis and hippocampal miR-124 expression in rats with depression induced by chronic unpredictable mild stress. Neural Regen Res 2020; 15:1150-1159. [PMID: 31823896 PMCID: PMC7034282 DOI: 10.4103/1673-5374.270414] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The depression-like behavior phenotype, neurogenesis in the dentate gyrus and miR-124 expression in the hippocampus are the focus of current research on the pathogenesis of depression and antidepressant therapy. The present study aimed to clarify the dynamic changes of depression-like behavior, dentate gyrus neurogenesis and hippocampal miR-124 expression during depression induced by chronic stress to reveal pathological features at different stages of depression and to further provide insight into depression treatment. Chronic unpredictable mild stress depression models were established by exposing Sprague-Dawley rats to various mild stressors, including white noise, thermal swimming, stroboscopic illumination, soiled cages, pairing with three other stressed animals, cold swimming, tail pinch, restraint and water and food deprivation. Chronic unpredictable mild stress model rats underwent dynamic observation from 1 to 8 weeks and were compared with a control group (normal feeding without any stressors). To observe changes in the depression-like behavior phenotype during chronic unpredictable mild stress-induced depression, a sucrose preference test was used to evaluate the degree of anhedonia. An open-field test was used to evaluate locomotor activity and anxiety status. Compared with the control group, chronic unpredictable mild stress rats lost weight but did not have a depression-like behavioral phenotype at 1–4 weeks. Chronic unpredictable mild stress rats presented decreased sucrose preference and locomotor activity at 5–8 weeks. In addition, chronic unpredictable mild stress rats did not have significant anxiety-like behavior during 1–8 weeks of modeling. To observe neurogenesis dysfunctions and changes in neuronal number in the dentate gyrus during chronic unpredictable mild stress-induced depression, markers (DCX and DCX/BrdU) of neural proliferation and differentiation and the neuronal marker NeuN were assessed by immunofluorescence. Compared with the control group, neurogenesis and the neuronal number in the dentate gyrus did not change from 2 to 6 weeks; however, neural proliferation and differentiation in the dentate gyrus decreased, and the number of neurons decreased until the eighth week in the chronic unpredictable mild stress group. Real-time quantitative reverse transcription polymerase chain reaction assays and fluorescence in situ hybridization were used to measure the expression of hippocampal miR-124 during chronic unpredictable mild stress-induced depression. The results showed that the expression of hippocampal miR-124 was unchanged during the first 4 weeks but increased from 5 to 6 weeks and decreased from 7 to 8 weeks compared with the control group. These findings indicate that during chronic unpredictable mild stress-induced depression, the behavioral phenotype, miR-124 expression in the hippocampus, neurogenesis in the dentate gyrus and neuronal numbers showed dynamic changes, which suggested that various pathological changes occur at different stages of depression. All experimental procedures and protocols were approved by the Experimental Animal Ethics Committee of Guangzhou University of Chinese Medicine of China in March 2015.
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Affiliation(s)
- Yun-Ling Huang
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Ning-Xi Zeng
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Jie Chen
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Jie Niu
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Wu-Long Luo
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Ping Liu
- Department of Pharmacology, PLA General Hospital, Beijing, China
| | - Can Yan
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Li-Li Wu
- Research Center for Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
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