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Jiang Y, Ma C, Guan Y, Yang W, Yu J, Shi H, Ding Z, Zhang Z. Long noncoding RNA KCNQ1OT1 aggravates cerebral infarction by regulating PTBT1/SIRT1 via miR-16-5p. J Neuropathol Exp Neurol 2024; 83:276-288. [PMID: 38324733 DOI: 10.1093/jnen/nlae005] [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] [Indexed: 02/09/2024] Open
Abstract
Cerebral infarction (CI) is one of the leading causes of disability and death. LncRNAs are key factors in CI progression. Herein, we studied the function of long noncoding RNA KCNQ1OT1 in CI patient plasma samples and in CI models. Quantitative real-time PCR and Western blotting tested gene and protein expressions. The interactions of KCNQ1OT1/PTBP1 and miR-16-5p were analyzed using dual-luciferase reporter and RNA immunoprecipitation assays; MTT assays measured cell viability. Cell migration and angiogenesis were tested by wound healing and tube formation assays. Pathological changes were analyzed by triphenyltetrazolium chloride and routine staining. We found that KCNQ1OT1 and PTBP1 were overexpressed and miR-16-5p was downregulated in CI patient plasma and in oxygen-glucose deprived (OGD) induced mouse brain microvascular endothelial (bEnd.3) cells. KCNQ1OT1 knockdown suppressed pro-inflammatory cytokine production and stimulated angiogenic responses in OGD-bEnd.3 cells. KCNQ1OT1 upregulated PTBP1 by sponging miR-16-5p. PTBP1 overexpression or miR-16-5p inhibition attenuated the effects of KCNQ1OT1 knockdown. PTBP1 silencing protected against OGD-bEnd.3 cell injury by enhancing SIRT1. KCNQ1OT1 silencing or miR-16-5p overexpression also alleviated ischemic injury in a mice middle cerebral artery occlusion model. Thus, KCNQ1OT1 silencing alleviates CI by regulating the miR-16-5p/PTBP1/SIRT1 pathway, providing a theoretical basis for novel therapeutic strategies targeting CI.
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Affiliation(s)
- Yuanming Jiang
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Chi Ma
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Yuxiu Guan
- Department of Neurology, The Fifth Affiliated Hospital of Harbin Medical University, Daqing, Heilongjiang, China
| | - Wenqi Yang
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Jiaqi Yu
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Hanfei Shi
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Zihang Ding
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Zhuobo Zhang
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
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Luo Y, Jiang Y, Zhong T, Li Z, He J, Li X, Cui K. LncRNA HCG18 affects diabetic cardiomyopathy and its association with miR-9-5p/IGF2R axis. Heliyon 2024; 10:e24604. [PMID: 38322876 PMCID: PMC10845250 DOI: 10.1016/j.heliyon.2024.e24604] [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: 04/07/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 02/08/2024] Open
Abstract
This paper aimed to investigate the role of lncRNA HCG18 (HCG18) in the progression of diabetic cardiomyopathy (DCM) and potential mechanisms. Streptozocin (STZ) was used to induce DCM model in rats, which was confirmed by blood glucose concentration, body weight, and HE staining. Myocardial apoptosis was detected by TUNEL. H9c2 cardiomyocytes were used to construct cell models of DCM through treatment of high glucose. The results showed that HCG18 was overexpressed in STZ induced DCM rat model and high glucose induced H9c2 cardiomyocytes. Si-HCG18 significantly increased cell viability, reduced cell apoptosis, attenuated activities of myocardial enzymes and enhanced activities of antioxidant enzymes in STZ induced DM model and high glucose induced H9c2 cardiomyocytes, while the results of upregulation of HCG18, in high glucose induced H9c2 cardiomyocytes, were opposite with that of si-HCG18. MiR-9-5p was a target of HCG18, and which was down-regulated in cardiomyocytes of DCM. The overexpression of miR-9-5p could neutralize the high glucose induced cardiomyocyte injury, and the silence of miR-9-5p could reverse the effect of si-HCG18 on high glucose induced cardiomyocytes. MiR-9-5p could directly target to IGF2R, and IGF2R was overexpressed in cardiomyocytes of DCM. Up-regulation of IGF2R can reverse the protective effect of si-HCG18 on cardiomyocytes. Taken together, HCG18 is significantly increased in cardiomyocytes of DCM. Down-regulation of HCG18 can improve cardiomyocyte injury through miR-9-5p/IGF2R axis in DCM.
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Affiliation(s)
- Yuhui Luo
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 40013, China
| | - Yi Jiang
- Department of Geriatrics, Chongqing Emergency Medical Center, Central Hospital of Chongqing University, Chongqing, 40013, China
| | - Tingting Zhong
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 40013, China
| | - Zhenggong Li
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 40013, China
| | - Jia He
- Department of Echocardiogram, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 40013, China
| | - Xiaoli Li
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 40013, China
| | - Kun Cui
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 40013, China
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Mei Z, Huang L, Rao W. CircNUFIP2 overexpression induces GDF11 to ameliorate oxygen-glucose deprivation-induced hippocampal neuron cell apoptosis and oxidative stress after cerebral ischemia. Neurol Res 2023; 45:70-80. [PMID: 36328251 DOI: 10.1080/01616412.2022.2123172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Previous data have indicated the regulation of circular RNA (circRNA) toward cerebral ischemia. This study aims to reveal the effects of circNUFIP2 on cerebral ischemia and the underlying mechanism. Methods Oxygen-glucose deprivation (OGD) hippocampal neuron (HT22) cell model and middle cerebral artery occlusion (MCAO) mouse model were used for this study. The expression of circRNA nuclear FMR1 interacting protein 2 (circNUFIP2), microRNA-1224-5p (miR-1224-5p) and growth differentiation factor 11 (GDF11) was detected by quantitative real-time polymerase-chain reaction. Protein expression was checked by Western blotting. The binding relationships among circNUFIP2, miR-1224-5p and GDF11 were identified by dual-luciferase reporter assay, RNA pull-down assay, and RNA immunoprecipitation assay. Cell proliferation and apoptosis were investigated by 5-Ethynyl-29-deoxyuridine and flow cytometry analysis, respectively. Results CircNUFIP2 and GDF11 expression were decreased, but miR-1224-5p was increased in OGD-treated HT22 cells when compared with their expression in control groups. OGD treatment inhibited HT22 cell proliferation but induced cell apoptosis and oxidative stress; however, these effects were attenuated after circNUFIP2 overexpression. Also, circNUFIP2 upregulation assuaged the cerebral infarction of MCAO mice. Besides, circNUFIP2 bound to miR-1224-5p and mediated OGD-induced HT22 cell damage through miR-1224-5p. Meanwhile, knockdown of GDF11, a target gene of miR-1224-5p, relieved miR-1224-5p depletion-caused effects in OGD-treated HT22 cells. Furthermore, circNUFIP2 regulated GDF11 expression by interacting with miR-1224-5p. Conclusion CircNUFIP2 overexpression protected neuron cells against cerebral ischemia-induced damage, at least in part, by the miR-1224-5p/GDF11 pathway, providing a possible target for the therapy of cerebral ischemic stroke.
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Affiliation(s)
- Zhujun Mei
- Department of Neurology, Jiangxi Provincial People's Hospital, the First Affiliated Hospital of Nanchang Medical College, Nanchang City, Jiangxi Province, China
| | - LinLing Huang
- Department of Gynecology, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang City, Jiangxi Province, China
| | - Wei Rao
- Department of Neurology, Jiangxi Provincial People's Hospital, the First Affiliated Hospital of Nanchang Medical College, Nanchang City, Jiangxi Province, China
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Liang C, Peng Y, Sun H, Wang L, Jiang L, Zou S. Silencing lncRNA KCNQ1OT1 reduced hepatic ischemia reperfusion injury-induced pyroptosis by regulating miR-142a-3p/HMGB1 axis. Mol Cell Biochem 2022; 478:1293-1305. [PMID: 36308669 DOI: 10.1007/s11010-022-04586-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 10/11/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Based on pre-existing evidence, KCNQ1OT1 has been pointed out to be closely related to myocardial and cerebral ischemia reperfusion injury diseases. Herein, the objective of our study is to probe into the potential function as well as the underlying mechanism of KCNQ1OT1 on hepatic ischemia reperfusion injury (HIRI). METHODS Using C57BL/6 J mice and primary mouse hepatocytes were conducted to establish HIRI model in vivo and in vitro. Cell viability was examined using CCK-8 assay and EdU assay. Flow cytometric analysis was performed to evaluate the pyroptosis. Dual-luciferase reporter assay was employed to verify the interaction relationships. qRT-PCR and Western blot were adopted to analyze the mRNA and protein level. Histopathological alteration of liver tissue was evaluated by HE staining. Immunohistochemistry (IHC) was performed to measure NLRP3 and caspase 1. RESULTS Our data revealed that KCNQ1OT1 expression was ascending in hepatic tissue of HIRI mouse. Moreover, deprivation of KCNQ1OT1 mitigated I/R-induced hepatic injury and pyroptosis in vivo. Further experiments demonstrated that silencing KCNQ1OT1 promoted proliferation and inhibited pyroptosis in hypoxia/reoxygenation (H/R)-induced primary mouse hepatocytes. Mechanistically, KCNQ1OT1 functioned as a competing endogenous RNA which sponged miR-142a-3p, therefore promoted HMGB1 expression to activate TLR4/NF-κB signaling pathway in HIRI. CONCLUSION LncRNA KCNQ1OT1 elevated HMGB1 expression through binding to miR-142a-3p, thereby promoting pyroptosis in HIRI.
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Affiliation(s)
- Canxin Liang
- Department of Anesthesiology, Hunan Cancer Hospital, Hunan Province, No. 283 Tongzipo Road, Changsha, 410013, China
| | - Yanhua Peng
- Department of Anesthesiology, Hunan Cancer Hospital, Hunan Province, No. 283 Tongzipo Road, Changsha, 410013, China
| | - Huiping Sun
- Department of Anesthesiology, Hunan Cancer Hospital, Hunan Province, No. 283 Tongzipo Road, Changsha, 410013, China
| | - Lijuan Wang
- Department of Anesthesiology, Hunan Cancer Hospital, Hunan Province, No. 283 Tongzipo Road, Changsha, 410013, China
| | - Liubing Jiang
- Department of Anesthesiology, Hunan Cancer Hospital, Hunan Province, No. 283 Tongzipo Road, Changsha, 410013, China
| | - Shuangfa Zou
- Department of Anesthesiology, Hunan Cancer Hospital, Hunan Province, No. 283 Tongzipo Road, Changsha, 410013, China.
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Antisense Transcription in Plants: A Systematic Review and an Update on cis-NATs of Sugarcane. Int J Mol Sci 2022; 23:ijms231911603. [PMID: 36232906 PMCID: PMC9569758 DOI: 10.3390/ijms231911603] [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: 07/19/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 11/09/2022] Open
Abstract
Initially, natural antisense transcripts (NATs, natRNAs, or asRNAs) were considered repressors; however, their functions in gene regulation are diverse. Positive, negative, or neutral correlations to the cognate gene expression have been noted. Although the first studies were published about 50 years ago, there is still much to be investigated regarding antisense transcripts in plants. A systematic review of scientific publications available in the Web of Science databases was conducted to contextualize how the studying of antisense transcripts has been addressed. Studies were classified considering three categories: “Natural antisense” (208), artificial antisense used in “Genetic Engineering” (797), or “Natural antisense and Genetic Engineering”-related publications (96). A similar string was used for a systematic search in the NCBI Gene database. Of the 1132 antisense sequences found for plants, only 0.8% were cited in PubMed and had antisense information confirmed. This value was the lowest when compared to fungi (2.9%), bacteria (2.3%), and mice (54.1%). Finally, we present an update for the cis-NATs identified in Saccharum spp. Of the 1413 antisense transcripts found in different experiments, 25 showed concordant expressions, 22 were discordant, 1264 did not correlate with the cognate genes, and 102 presented variable results depending on the experiment.
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Zhang S, Zhu T, Li Q, Sun G, Sun X. Long Non-Coding RNA-Mediated Competing Endogenous RNA Networks in Ischemic Stroke: Molecular Mechanisms, Therapeutic Implications, and Challenges. Front Pharmacol 2021; 12:765075. [PMID: 34867389 PMCID: PMC8635732 DOI: 10.3389/fphar.2021.765075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/20/2021] [Indexed: 12/20/2022] Open
Abstract
Ischemic stroke (IS) is a disease that is characterized by high mortality and disability. Recent studies have shown that LncRNA-mediated competing endogenous RNA (ceRNA) networks play roles in the occurrence and development of cerebral I/R injury by regulating different signaling pathways. However, no systematic analysis of ceRNA mechanisms in IS has been reported. In this review, we discuss molecular mechanisms of LncRNA-mediated ceRNA networks under I/R injury. The expression levels of LncRNAs, microRNAs (miRNAs), and messenger RNAs (mRNAs) and their effects in four major cell types of the neurovascular unit (NVU) are also involved. We further summarize studies of LncRNAs as biomarkers and therapeutic targets. Finally, we analyze the advantages and limitations of using LncRNAs as therapeutics for IS.
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Affiliation(s)
- Shuxia Zhang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, China
| | - Ting Zhu
- Institute of Neuroregeneration and Neurorehabilitation, Qingdao University, Qingdao, China
| | - Qiaoyu Li
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, China
| | - Guibo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaobo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, China
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Li Y, Yi M, Wang D, Zhang Q, Yang L, Yang C. LncRNA KCNQ1OT1 Regulates Endoplasmic Reticulum Stress to Affect Cerebral Ischemia-Reperfusion Injury Through Targeting miR-30b/GRP78. Inflammation 2021; 43:2264-2275. [PMID: 32794050 DOI: 10.1007/s10753-020-01295-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Endoplasmic reticulum stress (ERS) plays an important role in cerebral ischemia-reperfusion injury (CIRI) by regulating apoptosis. Although the role of long non-coding RNA (LncRNA) KCNQ1OT1 in CIRI has been reported, the specific mechanism is still unclear. In this paper, the regulation of ERS by LncRNA KCNQ1OT1 in CIRI and its mechanism were studied. Transient middle cerebral artery occlusion (tMCAO) model was established in SD rats with KCNQ1OT1 intervention. PC12 cells were used to construct the OGD/R cell model. The expressions of LncRNA KCNQ1OT1 and miR-30b were detected by RT-qPCR. TCC staining was used to detect the extent of cerebral ischemia. TUNEL staining was used to detect apoptosis level, and Western blot was used to detect the expressions of ERS and apoptosis-related proteins. The targeted binding of LncRNA KCNQ1OT1, miR-30b, and GRP78 was detected by double luciferase assay. The expressions of LncRNA KCNQ1OT1 and miR-30b were interfered by cell transfection. Cell proliferation was detected by CCK-8. The level of LncRNA KCNQ1OT1 was increased and that of miR-30b was decreased in the blood samples of patients with CIRI. In tMCAO rats with KCNQ1OT1 intervention, the expression of miR-30b was increased, and the ischemic range of brain tissues was decreased. What's more, the level of ERS was decreased, and the apoptosis of brain tissues was decreased. LncRNA KCNQ1OT1 could regulate miR-30b/GRP78 in OGD/R cells in a targeted way. Intervention of KCNQ1OT1 could promote the proliferation of OGD/R cells, inhibiting the level of ERS and cell apoptosis. Further inhibition of miR-30b could reverse the effect of intervention of KCNQ1OT1. LncRNA KCNQ1OT1 regulates ERS to affect CIRI through targeting miR-30b/GRP78.
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Affiliation(s)
- Yue Li
- Department of Neurology, Tianjin Medical University General Hospital, 154 AnShan road, HePing District, Tianjin, 300052, China
| | - Ming Yi
- Department of Neurology, Tianjin Medical University General Hospital, 154 AnShan road, HePing District, Tianjin, 300052, China
| | - Dan Wang
- Department of Clinical Laboratory, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Qiuxia Zhang
- Department of Neurology, Tianjin Medical University General Hospital, 154 AnShan road, HePing District, Tianjin, 300052, China
| | - Li Yang
- Department of Neurology, Tianjin Medical University General Hospital, 154 AnShan road, HePing District, Tianjin, 300052, China
| | - Chunsheng Yang
- Department of Neurology, Tianjin Medical University General Hospital, 154 AnShan road, HePing District, Tianjin, 300052, China.
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Liu L, Zheng B, Wang Z. Protective effects of the knockdown of lncRNA AK139328 against oxygen glucose deprivation/reoxygenation-induced injury in PC12 cells. Mol Med Rep 2021; 24:621. [PMID: 34212979 PMCID: PMC8261620 DOI: 10.3892/mmr.2021.12260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 02/02/2021] [Indexed: 01/14/2023] Open
Abstract
Cerebral ischemic stroke is a major cause of adult morbidity and mortality worldwide. Several long non-coding RNAs (lncRNAs) have been reported to participate in cerebral ischemia/reperfusion injury (IRI). However, to the best of our knowledge, the role of lncRNA AK139328 in cerebral ischemic stroke remains poorly understood. The present study aimed to determine the expression and function of lncRNA AK139328 in the progression of IRI. PC12 cells were injured by oxygen glucose deprivation/reoxygenation (OGD/R) to establish an in vitro ischemic stroke model. An MTT assay was performed to determine cell viability. Reverse transcription-quantitative PCR was used to analyze the expression levels of AK139328 and Netrin-1 in blood samples from patients who had suffered a cerebral ischemic stroke and healthy individuals or OGD/R PC12 cells. ELISAs were used to determine the levels of inflammatory cytokines. In addition, oxidative stress levels and the levels of cell apoptosis were evaluated by reactive oxygen species (ROS) kits, flow cytometry and western blotting. Immunofluorescence staining was used for the detection of cell neurite outgrowth. The results of the present study revealed that AK139328 expression levels were upregulated in patients who had suffered a cerebral ischemic stroke and in PC12 cells following stimulation with OGD/R. The knockdown of AK139328 alleviated OGD/R-induced decreases in cell viability, downregulation in Netrin-1 expression and increases in inflammatory cytokines levels, including TNF-α, IL-1β and IL-6. Moreover, AK139328 silencing suppressed oxidative stress and cell apoptosis in OGD/R-treated PC12 cells. Furthermore, the expression levels of microtubule associated protein 2 and growth associated protein 43 in OGD/R-injured PC12 cells were upregulated following the knockdown of AK139328 expression. In conclusion, these findings suggested that the knockdown of AK139328 expression may protect PC12 cells against OGD/R injury by regulating inflammatory responses, oxidative stress and cell apoptosis. The data suggested a potential therapeutic target for the diagnosis and treatment of cerebral ischemic stroke.
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Affiliation(s)
- Liyan Liu
- Department of Neurology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, Jiangsu 222042, P.R. China
| | - Bin Zheng
- Department of Nephrology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, Jiangsu 222042, P.R. China
| | - Zhaoxia Wang
- Department of Neurology, Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu 225002, P.R. China
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Deciphering the Long Non-Coding RNAs and MicroRNAs Coregulation Networks in Ovarian Cancer Development: An Overview. Cells 2021; 10:cells10061407. [PMID: 34204094 PMCID: PMC8227049 DOI: 10.3390/cells10061407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 01/17/2023] Open
Abstract
Non-coding RNAs are emergent elements from the genome, which do not encode for proteins but have relevant cellular functions impacting almost all the physiological processes occurring in eukaryotic cells. In particular, microRNAs and long non-coding RNAs (lncRNAs) are a new class of small RNAs transcribed from the genome, which modulate the expression of specific genes at transcriptional and posttranscriptional levels, thus adding a new regulatory layer in the flux of genetic information. In cancer cells, the miRNAs and lncRNAs interactions with its target genes and functional pathways are deregulated as a consequence of epigenetic and genetic alterations occurring during tumorigenesis. In this review, we summarize the actual knowledge on the interplay of lncRNAs with its cognate miRNAs and mRNAs pairs, which interact in coregulatory networks with a particular emphasis on the mechanisms underlying its oncogenic behavior in ovarian cancer. Specifically, we reviewed here the evidences unraveling the relevant roles of lncRNAs/miRNAs pairs in altered regulation of cell migration, angiogenesis, therapy resistance, and Warburg effect. Finally, we also discussed its potential clinical implications in ovarian cancer and related endocrine disease therapies.
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Song A, Yang Y, He H, Sun J, Chang Q, Xue Q. Inhibition of Long Non-Coding RNA KCNQ1OT1 Attenuates Neuroinflammation and Neuronal Apoptosis Through Regulating NLRP3 Expression via Sponging miR-30e-3p. J Inflamm Res 2021; 14:1731-1742. [PMID: 33981152 PMCID: PMC8107009 DOI: 10.2147/jir.s291274] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 04/14/2021] [Indexed: 11/30/2022] Open
Abstract
Background Neuroinflammation and neuronal apoptosis are considered as the critical factors in the pathogenesis of multiple neurological diseases. Recent studies have shown that long non-coding RNA (lncRNA) plays a crucial part in neuroinflammation and neuronal apoptosis. Methods The expression levels of lncRNA KCNQ1OT1, miR-30e-3p and NLRP3 in lipopolysaccharide (LPS)-induced HMC3 cells were analyzed using RT-qPCR. MTT assay, LDH release assay and ELISA were used to assess the effect of KCNQ1OT1 and miR-30e-3p on neuroinflammation and neuronal apoptosis. The targeted regulatory relationships among KCNQ1OT1, miR-30e-3p and NLRP3 were evaluated by bioinformatics analysis, dual-luciferase reporter gene assay, RT-qPCR and Western blot. Results In LPS-induced HMC3 cells, the expression levels of KCNQ1OT1 and NLRP3 were increased, while the expression level of miR-30e-3p was reduced. Knockdown of KCNQ1OT1 alleviated LPS-induced apoptosis and neuroinflammation of HMC3 cells, accompanied by increased cell viability, low LDH release and reduced cell apoptosis rate, and reduced levels of TNF-α, IL-1β and IL-6. Overexpression of miR-30e-3p had a similar effect. Additionally, KCNQ1OT1 could bind with miR-30e-3p and repress its expression in HMC3 cells, and KCNQ1OT1 overexpression counteracted miR-30e-3p’s inhibitory effect on LPS-induced neuronal damage and inflammatory response in HMC3 cells. Furthermore, KCNQ1OT1 could positively regulate the expression of NLRP3 via repressing miR-30e-3p. Conclusion Inhibition of KCNQ1OT1 could reduce neuroinflammation and neuronal apoptosis induced by LPS in HMC3 cells by regulating miR-30e-3p/NLRP3 pathway, suggesting that KCNQ1OT1 and miR-30e-3p could serve as promising therapeutic targets for treating neurological diseases.
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Affiliation(s)
- Aixia Song
- Department of Neurology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, 075000, People's Republic of China
| | - Yuying Yang
- Stroke Office, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, 075000, People's Republic of China
| | - Hongmei He
- Department of Neurology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, 075000, People's Republic of China
| | - Jian Sun
- Department of Neurology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, 075000, People's Republic of China
| | - Qing Chang
- Department of Neurology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, 075000, People's Republic of China
| | - Qian Xue
- Department of Neurology, The First Affiliated Hospital of Hebei North University, Zhangjiakou, Hebei, 075000, People's Republic of China
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Abstract
Cerebral ischemia-reperfusion (I/R) is a kind of neurovascular disease that causes serious cerebral damage. MicroRNAs (miRNAs) have been widely reported to participate in multiple diseases, including cerebral I/R injury. However, the exact mechanisms of miR-7-5p in cerebral I/R injury was not fully elucidated. In this study, we explored the biological role and regulatory mechanism of miR-7-5p in cerebral I/R injury. We established an in vivo model of cerebral I/R by middle cerebral artery occlusion and an in vitro cellular model of cerebral I/R injury through treating neurons (SH-SY5Y cells) with oxygen-glucose deprivation (OGD). In addition, miR-7-5p expression was confirmed to be upregulated in the cerebral I/R rat model and OGD/R-treated SH-SY5Y cells. Moreover, miR-7-5p inhibition overtly suppressed cerebral injury, cerebral inflammation, and SH-SY5Y cells apoptosis. Sirtuin 1 (sirt1) is previously reported to alleviate I/R, and in this study, it was identified to be a target of miR-7-5p based on luciferase reporter assay. Reverse transcription-quantitative polymerase chain reaction revealed sirt1 expression was downregulated in the cerebral I/R rat model and OGD/R-treated SH-SY5Y cells. Besides, miR-7-5p negatively regulated sirt1. Finally, rescue assays delineated sirt1 overexpression recovered the miR-7-5p upregulation-induced promotion on cerebral I/R injury. In conclusion, miR-7-5p enhanced cerebral I/R injury by degrading sirt1, providing a new paradigm to investigate cerebral I/R injury.
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Gong C, Zhou X, Lai S, Wang L, Liu J. Long Noncoding RNA/Circular RNA-miRNA-mRNA Axes in Ischemia-Reperfusion Injury. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8838524. [PMID: 33299883 PMCID: PMC7710414 DOI: 10.1155/2020/8838524] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/30/2020] [Accepted: 10/30/2020] [Indexed: 12/18/2022]
Abstract
Ischemia-reperfusion injury (IRI) elicits tissue injury involved in a wide range of pathologies. Multiple studies have demonstrated that noncoding RNAs (ncRNAs), including long noncoding RNAs (lncRNAs), circular RNAs (circRNAs), and microRNAs (miRNAs), participate in the pathological development of IRI, and they may act as biomarkers, therapeutic targets, or prognostic indicators. Nonetheless, the specific molecular mechanisms of ncRNAs in IRI have not been completely elucidated. Regulatory networks among lncRNAs/circRNAs, miRNAs, and mRNAs have been the focus of attention in recent years. Studies on the underlying molecular mechanisms have contributed to the discovery of therapeutic targets or strategies in IRI. In this review, we comprehensively summarize the current research on the lncRNA/circRNA-miRNA-mRNA axes and highlight the important role of these axes in IRI.
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Affiliation(s)
- Chengwu Gong
- Department of Cardiothoracic Surgery, Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Xueliang Zhou
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Songqing Lai
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Lijun Wang
- Department of Cardiothoracic Surgery, Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Jichun Liu
- Department of Cardiothoracic Surgery, Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
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13
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LncRNA KCNQ1OT1 regulates the invasion and migration of hepatocellular carcinoma by acting on S1PR1 through miR-149. Cancer Gene Ther 2020; 28:850-863. [PMID: 32753631 DOI: 10.1038/s41417-020-0203-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/07/2020] [Accepted: 07/22/2020] [Indexed: 02/06/2023]
Abstract
The aim of this study was to investigate the effect of lncRNA KCNQ1OT1 on HCC and to explore the possible underlying mechanisms. The expression levels of KCNQ1OT1, miR-149 and S1PR1 were detected by qRT-PCR assay. A dual luciferase reporter assay was used to detect the interaction between KCNQ1OT1 and miR-149, as well as miR-149 and S1PR1. The interaction between KCNQ1OT1 and miR-149 was further investigated by RNA pull-down assay. Wound healing assays and Transwell assays were carried out to determine cell migration and invasion. A xenograft tumour assay was used to validate the role of KCNQ1OT1 in vivo. KCNQ1OT1 and S1PR1 were significantly increased, but miR-149 was decreased in HCC cells. Luciferase reporter assays and RNA pull-down assays revealed that KCNQ1OT1 directly targeted miR-149. In addition, miR-149 bound to the 3'-UTR of S1PR1. Knockdown of KCNQ1OT1 or overexpression of miR-149 inhibited the invasion and migration of HCC cells. However, suppression of miR-149 could abrogate the effect of KCNQ1OT1 knockdown on the invasion and migration abilities of HCC cells. In vivo assays showed that KCNQ1OT1 knockdown suppressed tumour growth. This work suggests that lncRNA KCNQ1OT1 might act as a potential therapeutic target in HCC.
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Ghafouri-Fard S, Shoorei H, Taheri M. Non-coding RNAs participate in the ischemia-reperfusion injury. Biomed Pharmacother 2020; 129:110419. [PMID: 32563988 DOI: 10.1016/j.biopha.2020.110419] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 02/07/2023] Open
Abstract
Ischemia, being defined as blood supply deficiency is involved in the pathogenesis of a number of life-threatening conditions such as myocardial infarction and cerebral stroke. Assessment of the molecular pathology of these conditions has led to identification of the role of reperfusion in induction and aggravation of tissue injury and necrosis. Thus, the term "ischemia/ reperfusion (I/R) injury" has been introduced. This process involves aberrant regulation of the mitochondrial function, apoptotic and autophagic pathways and signal transducers. More recently, non-coding RNAs including long non-coding RNAs (lncRNAs) ad microRNAs (miRNAs) have been shown to influence I/R injury. Animal studies and clinical investigations have shown up-/down-regulation of tens of lncRNAs and miRNAs in this process. In the current study, we summarize the role of these transcripts in the pathophysiology of I/R injury and their potential as biomarkers for detection of extent of tissue injury.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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