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Xiao H, Tang AZ, Xu ML, Chen HL, Wang F, Li CQ. Mycobacterium vaccae attenuates airway inflammation by inhibiting autophagy and activating PI3K/Akt signaling pathway in OVA-induced allergic airway inflammation mouse model. Mol Immunol 2024; 173:30-39. [PMID: 39018745 DOI: 10.1016/j.molimm.2024.07.006] [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: 12/03/2023] [Revised: 05/11/2024] [Accepted: 07/08/2024] [Indexed: 07/19/2024]
Abstract
PURPOSE The etiology of asthma remains elusive, with no known cure. Based on accumulating evidence, autophagy, a self-degradation process that maintains cellular metabolism and homeostasis, participates in the development of asthma. Mycobacterium vaccae vaccine (M. vaccae), an immunomodulatory agent, has previously been shown to effectively alleviate airway inflammation and airway remodeling. However, its therapeutic effect on asthma via the regulation of autophagy remains unknown. Therefore, this study aimed to investigate the impact of M. vaccae in attenuating asthma airway inflammation via autophagy-mediated pathways. METHODS Balb/c mice were used to generate an ovalbumin (OVA)-immunized allergic airway model and were subsequently administered either M. vaccae or M. vaccae + rapamycin (an autophagy activator) prior to each challenge. Next, airway inflammation, mucus secretion, and airway remodeling in mouse lung tissue were assessed via histological analyses. Lastly, the expression level of autophagy proteins LC3B, Beclin1, p62, and autolysosome was determined both in vivo and in vitro, along with the expression level of p-PI3K, PI3K, p-Akt, and Akt in mouse lung tissue. RESULTS The findings indicated that aerosol inhalation of M. vaccae in an asthma mouse model has the potential to decrease eosinophil counts, alleviate airway inflammation, mucus secretion, and airway remodeling through the inhibition of autophagy. Likewise, M. vaccae could reduce the levels of OVA-specific lgE, IL-5, IL-13, and TNF-α in asthma mouse models by inhibiting autophagy. Furthermore, this study revealed that M. vaccae also suppressed autophagy in IL-13-stimulated BEAS-2B cells. Moreover, M. vaccae may activate the PI3K/Akt signaling pathway in the lung tissue of asthmatic mice. CONCLUSION In summary, the present study suggests that M. vaccae may contribute to alleviating airway inflammation and remodeling in allergic asthma by potentially modulating autophagy and the PI3K/Akt signaling pathway. These discoveries offer a promising avenue for the development of therapeutic interventions targeting allergic airway inflammation.
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Affiliation(s)
- Huan Xiao
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, China
| | - An-Zhou Tang
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, China
| | - Mei-Li Xu
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, China
| | - Hong-Liu Chen
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, China
| | - Fan Wang
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, China
| | - Chao-Qian Li
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, China.
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2
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Ding X, Zhu C, Wang W, Li M, Ma C, Gao B. SIRT1 is a regulator of autophagy: Implications for the progression and treatment of myocardial ischemia-reperfusion. Pharmacol Res 2024; 199:106957. [PMID: 37820856 DOI: 10.1016/j.phrs.2023.106957] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/09/2023] [Accepted: 10/08/2023] [Indexed: 10/13/2023]
Abstract
SIRT1 is a highly conserved nicotinamide adenine dinucleotide (NAD+)-dependent histone deacetylase. It is involved in the regulation of various pathophysiological processes, including cell proliferation, survival, differentiation, autophagy, and oxidative stress. Therapeutic activation of SIRT1 protects the heart and cardiomyocytes from pathology-related stress, particularly myocardial ischemia/reperfusion (I/R). Autophagy is an important metabolic pathway for cell survival during energy or nutrient deficiency, hypoxia, or oxidative stress. Autophagy is a double-edged sword in myocardial I/R injury. The activation of autophagy during the ischemic phase removes excess metabolic waste and helps ensure cardiomyocyte survival, whereas excessive autophagy during reperfusion depletes the cellular components and leads to autophagic cell death. Increasing research on I/R injury has indicated that SIRT1 is involved in the process of autophagy and regulates myocardial I/R. SIRT1 regulates autophagy through various pathways, such as the deacetylation of FOXOs, ATGs, and LC3. Recent studies have confirmed that SIRT1-mediated autophagy plays different roles at different stages of myocardial I/R injury. By targeting the mechanism of SIRT1-mediated autophagy at different stages of I/R injury, new small-molecule drugs, miRNA activators, or blockers can be developed. For example, resveratrol, sevoflurane, quercetin, and melatonin in the ischemic stage, coptisine, curcumin, berberine, and some miRNAs during reperfusion, were involved in regulating the SIRT1-autophagy axis, exerting a cardioprotective effect. Here, we summarize the possible mechanisms of autophagy regulation by SIRT1 in myocardial I/R injury and the related molecular drug applications to identify strategies for treating myocardial I/R injury.
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Affiliation(s)
- Xiaoqing Ding
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Chenyu Zhu
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Wenhong Wang
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Mengying Li
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Chunwei Ma
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Binghong Gao
- School of Athletic Performance, Shanghai University of Sport, Shanghai 200438, China.
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Popov SV, Mukhomedzyanov AV, Voronkov NS, Derkachev IA, Boshchenko AA, Fu F, Sufianova GZ, Khlestkina MS, Maslov LN. Regulation of autophagy of the heart in ischemia and reperfusion. Apoptosis 2023; 28:55-80. [PMID: 36369366 DOI: 10.1007/s10495-022-01786-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
Abstract
Ischemia/reperfusion (I/R) of the heart leads to increased autophagic flux. Preconditioning stimulates autophagic flux by AMPK and PI3-kinase activation and mTOR inhibition. The cardioprotective effect of postconditioning is associated with activation of autophagy and increased activity of NO-synthase and AMPK. Oxidative stress stimulates autophagy in the heart during I/R. Superoxide radicals generated by NADPH-oxidase acts as a trigger for autophagy, possibly due to AMPK activation. There is reason to believe that AMPK, GSK-3β, PINK1, JNK, hexokinase II, MEK, PKCα, and ERK kinases stimulate autophagy, while mTOR, PKCδ, Akt, and PI3-kinase can inhibit autophagy in the heart during I/R. However, there is evidence that PI3-kinase could stimulate autophagy in ischemic preconditioning of the heart. It was found that transcription factors FoxO1, FoxO3, NF-κB, HIF-1α, TFEB, and Nrf-2 enhance autophagy in the heart in I/R. Transcriptional factors STAT1, STAT3, and p53 inhibit autophagy in I/R. MicroRNAs could stimulate and inhibit autophagy in the heart in I/R. Long noncoding RNAs regulate the viability and autophagy of cardiomyocytes in hypoxia/reoxygenation (H/R). Nitric oxide (NO) donors and endogenous NO could activate autophagy of cardiomyocytes. Activation of heme oxygenase-1 promotes cardiomyocyte tolerance to H/R and enhances autophagy. Hydrogen sulfide increases cardiac tolerance to I/R and inhibits apoptosis and autophagy via mTOR and PI3-kinase activation.
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Affiliation(s)
- Sergey V Popov
- Cardiology Research Institute, Tomsk National Research Medical Centre, the Russian Academy of Sciences, Tomsk, Russia, 634012
| | - Alexander V Mukhomedzyanov
- Cardiology Research Institute, Tomsk National Research Medical Centre, the Russian Academy of Sciences, Tomsk, Russia, 634012
| | - Nikita S Voronkov
- Cardiology Research Institute, Tomsk National Research Medical Centre, the Russian Academy of Sciences, Tomsk, Russia, 634012
| | - Ivan A Derkachev
- Cardiology Research Institute, Tomsk National Research Medical Centre, the Russian Academy of Sciences, Tomsk, Russia, 634012
| | - Alla A Boshchenko
- Cardiology Research Institute, Tomsk National Research Medical Centre, the Russian Academy of Sciences, Tomsk, Russia, 634012
| | - Feng Fu
- School of Basic Medicine, Fourth Military Medical University, No.169, West Changle Road, Xi'an, 710032, China
| | | | | | - Leonid N Maslov
- Cardiology Research Institute, Tomsk National Research Medical Centre, the Russian Academy of Sciences, Tomsk, Russia, 634012.
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Zhao G, Gao Y, Zhang J, Zhang H, Xie C, Nan F, Feng S, Ha Z, Li C, Zhu X, Li Z, Zhang P, Zhang Y, Lu H, Jin N. Toll-like receptor 2 signaling pathway activation contributes to a highly efficient inflammatory response in Japanese encephalitis virus-infected mouse microglial cells by proteomics. Front Microbiol 2022; 13:989183. [PMID: 36171749 PMCID: PMC9511957 DOI: 10.3389/fmicb.2022.989183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/12/2022] [Indexed: 12/02/2022] Open
Abstract
Thousands of people die each year from Japanese encephalitis (JE) caused by the Japanese encephalitis virus (JEV), probably due to exacerbation of the inflammatory response that impairs the course of the disease. Microglia are mononuclear phagocytic cells located within the parenchyma of the central nervous system; these play a key role in the innate immune response against JEV infections. However, the involvement of toll-like receptor 2 (TLR2) in the inflammatory response during the early stages of JEV infection in BV2 cells remains. Here, we evaluated protein profiles and determined the role of TLR2 in the inflammatory response of JEV-infected BV2 cells. High-depth tandem mass tags labeling for quantitative proteomics was used to assess JEV infected-BV2 cells and compare immune response profiles at 6, 12, and 24 h post-infection (hpi). In total, 212 upregulated proteins were detected at 6 hpi, 754 at 12 h, and 191 at 24 h. According to GO and KEGG enrichment analysis, the upregulated proteins showed enrichment for proteins related to the immune response. Parallel reaction monitoring tests, western blotting, and qPCR results showed that the adaptor protein MyD88 was not activated. The expression levels of key proteins downstream of MyD88, such as IRAK1, IRAK4, and TRAF6 did not increase; however, the expression levels of PI3K-AKT did increase. By inhibiting key proteins (TLR2, PI3K, and AKT) we confirmed that JEV activated TLR2, thus resulting in a robust inflammatory response. Consequently, the TLR2-PI3K-AKT signaling axis was proven to play a critical in the early stages of the JEV infection-induced inflammatory response in microglia.
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Affiliation(s)
- Guanyu Zhao
- College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, China
| | - Yan Gao
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Jiaqi Zhang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - He Zhang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Chinese Academy of Medical Sciences, Changchun, China
| | - Changzhan Xie
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Fulong Nan
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Sheng Feng
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Zhuo Ha
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Chinese Academy of Medical Sciences, Changchun, China
| | - Chenghui Li
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Xiangyu Zhu
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Zhuoxin Li
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ping Zhang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ying Zhang
- College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, China
- *Correspondence: Ying Zhang,
| | - Huijun Lu
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Chinese Academy of Medical Sciences, Changchun, China
- Huijun Lu,
| | - Ningyi Jin
- College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, China
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Chinese Academy of Medical Sciences, Changchun, China
- Ningyi Jin,
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5
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Sayed AM, Gohar OM, Abd-Alhameed EK, Hassanein EHM, Ali FEM. The importance of natural chalcones in ischemic organ damage: Comprehensive and bioinformatic analysis review. J Food Biochem 2022; 46:e14320. [PMID: 35857486 DOI: 10.1111/jfbc.14320] [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: 03/19/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 11/26/2022]
Abstract
Over the last few decades, extensive research has been conducted, yielding a detailed account of thousands of newly discovered compounds of natural origin and their biological activities, all of which have the potential to be used for a wide range of therapeutic purposes. There are multiple research papers denoting the central objective of chalcones, which have been shown to have therapeutic potential against various forms of ischemia. The various aspects of chalcones are discussed in this review regarding molecular mechanisms involved in the promising anti-ischemic potential of these chalcones. The main mechanisms involved in these protective effects are Nrf2/Akt activation and NF-κB/TLR4 suppression. Furthermore, in-silico studies were carried out to discover the probable binding of these chalcones to Keap-1 (an inhibitor of Nrf2), Akt, NF-κB, and TLR4 protein molecules. Besides, network pharmacology analysis was conducted to predict the interacting partners of these signals. The obtained results indicated that Nrf2, Akt, NF-κB, and TLR4 are involved in the beneficial anti-ischemic actions of chalcones. Conclusively, the present findings show that chalcones as anti-ischemic agents have a valid rationale. The discussed studies will provide a comprehensive viewpoint on chalcones and can help to optimize their effects in different ischemia. PRACTICAL APPLICATIONS: Ischemic organ damage is an unavoidable pathological condition with a high worldwide incidence. According to the current research progress, natural chalcones have been proved to treat and/or prevent various types of ischemic organ damage by alleviating oxidative stress, inflammation, and apoptosis by different molecular mechanisms. This article displays the comprehensive research progress and the molecular basis of ischemic organ damage pathophysiology and introduces natural chalcones' mechanism in the ischemic organ condition.
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Affiliation(s)
- Ahmed M Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
| | - Osama M Gohar
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, Egypt
| | - Esraa K Abd-Alhameed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Fares E M Ali
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
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6
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Liu T, Ling C, Tian J, Ma F. Protective effect of shikonin in myocardial ischemia/reperfusion injury in rats by inhibition of autophagy through the Hippo pathway. Biochem Biophys Res Commun 2022; 613:87-93. [PMID: 35537290 DOI: 10.1016/j.bbrc.2022.04.081] [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: 03/03/2022] [Revised: 04/02/2022] [Accepted: 04/18/2022] [Indexed: 11/18/2022]
Abstract
Shikonin is widely acknowledged as a bioactive substance extracted from the root of lithospermum erythrorhizon with multifunction. It alleviates ischemic/reperfusion (I/R) injury in liver and brain. Due to the similar pathogenesis of I/R and hypoxia/reoxygenation (H/R)-stimulated injury, we aimed to explore the potential pharmacological effects of Shikonin on the myocardial injury. The rats with myocardial I/R injury and the primary cardiomyocytes with H/R-stimulated injury were taken as in vivo and in vitro models. 2,3,5-Triphenyltetrazolium chloride staining and ELISA kits were used for detection of myocardial infarction and cardiac injury. Hematoxylin and eosin and immunohistochemistry staining were used to analyze the effect of Shikonin on autophagy histology. Western blot was performed to detect the proteins related to autophagy and Hippo pathway. The results showed that SHK reduces the size of myocardial infarction, improved cardiac function, suppressed the expression of autophagy-related proteins, and reduced the amount of autophagosomes. The underlying mechanism is to activate Hippo pathway. In vitro assay also suggested that SHK enhanced the cell viability, reduced the apoptotic rates in rat primary cardiomyocytes. Collectively, our results demonstrated that SHK protects against myocardial I/R injury by inhibiting autophagy, of which the underlying molecular mechanism is to activate the Hippo signaling pathway.
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Affiliation(s)
- Tingting Liu
- School of Rehabilitation, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, 222005, China.
| | - Cunbao Ling
- School of Basic Medical, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, 222005, China
| | - Jun Tian
- School of Basic Medical, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu, 222005, China
| | - Feixiang Ma
- Department of Rehabilitation Medicine, Yancheng Third People's Hospital, Yancheng, Jiangsu, 224008, China
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7
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Chen S, Zhang S, Wu H, Zhang D, You G, You J, Zheng N. Protective effect of phillyrin against cerebral ischemia/reperfusion injury in rats and oxidative stress-induced cell apoptosis and autophagy in neurons. Bioengineered 2022; 13:7940-7950. [PMID: 35291908 PMCID: PMC9278963 DOI: 10.1080/21655979.2022.2042142] [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] [Indexed: 11/02/2022] Open
Abstract
This study explored the role and potential molecular mechanism of phillyrin in cerebral ischemia/reperfusion (I/R) injury. The rat middle cerebral artery occlusion (MCAO)/R model was constructed, and cerebral infarction volume, brain water content, and neurological score were measured. Neuron morphological structures in brain tissues and primary neuron apoptosis were detected using hematoxylin and eosin (H&E) staining and Hoechst 33258 staining, respectively. In MCAO/R rats, phillyrin markedly reduced cerebral infarction volume, neurological score, and brain water content and inhibited neuron apoptosis. In vitro experiments showed that phillyrin remarkably increased viability and decreased lactate dehydrogenase (LDH) release of H2O2-injured neurons. Moreover, phillyrin remarkably downregulated the proportion of apoptosis-related protein B-associated X (Bax)/B-cell lymphoma protein 2 (Bcl-2) and reduced procaspase-3, phospho-Akt (p-Akt-1), and phosphorylation-mammalian target of rapamycin (p-mTOR) levels in H2O2-injured neurons. Furthermore, phosphatidylinositol-3 kinase (PI3K) inhibitor ZSTK474 weakened the effects of phillyrin on p-mTOR, p-Akt-1, characteristic proteins of autophagy 3-II (LC3-II) and beclin-1 levels, and H2O2-induced neuronal apoptosis and autophagy. Taken together, phillyrin alleviates I/R injury by inhibiting neuronal cell apoptosis and autophagy pathway, which may provide a new treatment strategy for cerebral I/R injury.
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Affiliation(s)
- Shu Chen
- Department of Cerebrovascular Disease, The People's Hospital of Leshan, Leshan, Sichuan, China
| | - Shan Zhang
- Department of Neurology, The People's Hospital of Leshan, Leshan, Sichuan, China
| | - Honggang Wu
- Department of Cerebrovascular Disease, The People's Hospital of Leshan, Leshan, Sichuan, China
| | - Daobao Zhang
- Department of Cerebrovascular Disease, The People's Hospital of Leshan, Leshan, Sichuan, China
| | - Guoliang You
- Department of Cerebrovascular Disease, The People's Hospital of Leshan, Leshan, Sichuan, China
| | - Jing You
- Department of Cerebrovascular Disease, The People's Hospital of Leshan, Leshan, Sichuan, China
| | - Niandong Zheng
- Department of Cerebrovascular Disease, The People's Hospital of Leshan, Leshan, Sichuan, China
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8
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Mechanisms of cinnamic aldehyde against myocardial ischemia/hypoxia injury in vivo and in vitro: Involvement of regulating PI3K/AKT signaling pathway. Biomed Pharmacother 2022; 147:112674. [DOI: 10.1016/j.biopha.2022.112674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/23/2022] [Accepted: 01/25/2022] [Indexed: 12/27/2022] Open
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Alpha-lipoic acid preconditioning plus ischemic postconditioning provides additional protection against myocardial reperfusion injury of diabetic rats: modulation of autophagy and mitochondrial function. Mol Biol Rep 2022; 49:1773-1782. [DOI: 10.1007/s11033-021-06987-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 11/18/2021] [Indexed: 12/17/2022]
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Cox-2 Antagonizes the Protective Effect of Sevoflurane on Hypoxia/Reoxygenation-Induced Cardiomyocyte Apoptosis through Inhibiting the Akt Pathway. DISEASE MARKERS 2021; 2021:4114593. [PMID: 34917200 PMCID: PMC8670977 DOI: 10.1155/2021/4114593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/16/2021] [Indexed: 11/23/2022]
Abstract
Objective To uncover the protective role of sevoflurane on hypoxia/reoxygenation-induced cardiomyocyte apoptosis through the protein kinase B (Akt) pathway. Methods An in vitro hypoxia/reoxygenation (H/R) model was established in cardiomyocyte cell line H9c2. Sevoflurane (SEV) was administrated in H9c2 cells during the reoxygenation period. Viability, layered double hydroxide (LDH) release, and apoptosis in H9c2 cells were determined to assess H/R-induced cell damage. Relative levels of apoptosis-associated genes were examined. Moreover, phosphorylation of Akt was determined. Results H/R injury declined viability and enhanced LDH release and apoptotic rate in H9c2 cells. Cyclooxygenase-2 (Cox-2) was upregulated following H/R injury, which was partially reversed by SEV treatment. In addition, SEV treatment reversed changes in viability and LDH release owing to H/R injury in H9c2 cells, which were further aggravated by overexpression of Cox-2. The Akt pathway was inhibited in H9c2 cells overexpressing Cox-2. Conclusions Sevoflurane protects cardiomyocyte damage following H/R via the Akt pathway, and its protective effect was abolished by overexpression of Cox-2.
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Zhou L, Sun J, Gu L, Wang S, Yang T, Wei T, Shan T, Wang H, Wang L. Programmed Cell Death: Complex Regulatory Networks in Cardiovascular Disease. Front Cell Dev Biol 2021; 9:794879. [PMID: 34901035 PMCID: PMC8661013 DOI: 10.3389/fcell.2021.794879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 11/15/2021] [Indexed: 12/25/2022] Open
Abstract
Abnormalities in programmed cell death (PCD) signaling cascades can be observed in the development and progression of various cardiovascular diseases, such as apoptosis, necrosis, pyroptosis, ferroptosis, and cell death associated with autophagy. Aberrant activation of PCD pathways is a common feature leading to excessive cardiac remodeling and heart failure, involved in the pathogenesis of various cardiovascular diseases. Conversely, timely activation of PCD remodels cardiac structure and function after injury in a spatially or temporally restricted manner and corrects cardiac development similarly. As many cardiovascular diseases exhibit abnormalities in PCD pathways, drugs that can inhibit or modulate PCD may be critical in future therapeutic strategies. In this review, we briefly describe the process of various types of PCD and their roles in the occurrence and development of cardiovascular diseases. We also discuss the interplay between different cell death signaling cascades and summarize pharmaceutical agents targeting key players in cell death signaling pathways that have progressed to clinical trials. Ultimately a better understanding of PCD involved in cardiovascular diseases may lead to new avenues for therapy.
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Affiliation(s)
- Liuhua Zhou
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jiateng Sun
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lingfeng Gu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Sibo Wang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tongtong Yang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tianwen Wei
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tiankai Shan
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Wang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Liansheng Wang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Li F, Liu J, Tang S, Yan J, Chen H, Li D, Yan X. Quercetin regulates inflammation, oxidative stress, apoptosis, and mitochondrial structure and function in H9C2 cells by promoting PVT1 expression. Acta Histochem 2021; 123:151819. [PMID: 34844154 DOI: 10.1016/j.acthis.2021.151819] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/17/2021] [Accepted: 11/17/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To investigate the effect and potential mechanism of quercetin on inflammation, oxidative stress, apoptosis, and mitochondrial structure and function in H9C2 cells. MATERIALS AND METHODS H9C2 cells were obtained from the Shanghai Institutes for Biological Sciences, Chinese Academy of Science, and randomly divided into six groups: control, model, PVT1 overexpression (OV), quercetin, OV + quercetin, and NAC groups. The CCK-8 assay was performed to examine cell proliferation. Flow cytometry was used to examine cell apoptosis, cell membrane potential, and ROS levels. The expression of endothelial nitric oxide synthase (eNOS), malondialdehyde (MDA), and superoxide dismutase (SOD) was measured by ELISA and a Biochemical kit. Western blotting was used to determine the levels of p-DRP1 (s637), MFN2, NF-kB, p-NF-kB, IkB, and p-IkB. IL-6, IL-10, TNF-α, and IL-1β mRNA expression was examined by RT-PCR. Electron microscopy was used to observe the structure of mitochondria in H9C2 cells. RESULTS MDA, p-NF-κB, p-IKB, IL-6, IL-1β, and TNF-α expression levels, and the cell apoptosis rate were significantly higher in the model group than in the control group (P < 0.05). In contrast, the cell proliferation rate and IL-10, SOD, eNOS, and ATP levels were significantly lower in the model group (P < 0.05). Moreover, MDA expression was significantly lower in the OV, quercetin, quercetin + OV, and NAC groups than in the model group (P < 0.05), while SOD, eNOS, and ATP levels were higher. The electron microscopy results showed that PVT1 overexpression or quercetin treatment could inhibit inflammation-induced mitochondrial fission and promote mitochondrial fusion. CONCLUSION Quercetin promotes the proliferation of H9C2 cells, while inhibiting inflammation, oxidative stress, and cell apoptosis, and alleviating the structural and functional dysfunction of mitochondria. These effects are achieved by promoting PVT1 expression.
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Affiliation(s)
- Fen Li
- Department of Neurology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, China
| | - Jianguang Liu
- Department of Neurology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, China
| | - Shifan Tang
- Department of Cardiology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, China
| | - Jie Yan
- Department of Forensic Science, Changsha, China
| | - Haifeng Chen
- Department of Clinical Medicine, Jianghan University, China
| | - Dongsheng Li
- Department of Cardiology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, China.
| | - Xisheng Yan
- Department of Cardiology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, China.
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13
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Qin GW, Lu P, Peng L, Jiang W. Ginsenoside Rb1 Inhibits Cardiomyocyte Autophagy via PI3K/Akt/mTOR Signaling Pathway and Reduces Myocardial Ischemia/Reperfusion Injury. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2021; 49:1913-1927. [PMID: 34775933 DOI: 10.1142/s0192415x21500907] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Myocardial ischemia/reperfusion injury (MIRI) is the major cause of myocardial cell damage in acute myocardial infarction, and its treatment remains a clinical challenge. Ginsenoside Rb1 showed protective effects on the cardiovascular system; however, the underlying mechanism remains largely unclear. Effects of Ginsenoside Rb1 on rat MIRI-induced myocardial infarct size were evaluated through TTC staining. TUNEL assay and flow cytometry analysis were employed to estimate cell apoptosis. Apoptosis, autophagy and PI3K/Akt/mTOR pathway-related proteins were estimated via western blot. Expression of Beclin1 in myocardial tissues were examined by immunohistochemical analysis. Expression levels of IL-1[Formula: see text], TNF-[Formula: see text] and IL-6 were tested by enzyme-linked immunosorbent assay (ELISA). Here, we found that Ginsenoside Rb1 treatment not only alleviated MIRI in rats but also protected H9C2 cells against hypoxia/reoxygenation induced damage. Ginsenoside Rb1 abolished the MIRI-induced activation of autophagy. Meanwhile, we found that treatment of 3-MA (autophagy inhibitor) could enhance the protective effects of Ginsenoside Rb1 on H9C2 cells during H/R. Moreover, Ginsenoside Rb1 treatment resulted in the activation of the PI3K/Akt/mTOR pathway, and treatment of LY294002 (PI3K/Akt pathway repressor) abolished the protective effects of Ginsenoside Rb1 on myocardial in vitro and in vivo. Our results suggest that Ginsenoside Rb1 functions as a protector against MIRI by repressing cardiomyocyte autophagy through the PI3K/Akt/mTOR signaling pathway.
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Affiliation(s)
- Guo-Wei Qin
- Department of Science and Technology, Guilin Medical University, Guilin 541001, Guangxi Zhuang Autonomous Region, P. R. China
| | - Pan Lu
- Department of Cardiology, Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi Zhuang Autonomous Region, P. R. China
| | - Li Peng
- Department of Cardiology, Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi Zhuang Autonomous Region, P. R. China
| | - Wei Jiang
- Department of Traditional Chinese Medicine, Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi Zhuang Autonomous Region, P. R. China
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14
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Jiang L, Zhou X, Xu K, Hu P, Bao J, Li J, Zhu J, Wu L. miR-7/EGFR/MEGF9 axis regulates cartilage degradation in osteoarthritis via PI3K/AKT/mTOR signaling pathway. Bioengineered 2021; 12:8622-8634. [PMID: 34629037 PMCID: PMC8806962 DOI: 10.1080/21655979.2021.1988362] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Osteoarthritis (OA) is a common degenerative disease in middle-aged and elderly people. Our previous study has proved that microRNA-7 (miR-7) exacerbated the OA process. This study was aimed to explore the downstream genes and mechanism regulated by miR-7 to affect OA. Multiple EGF-like-domains 9 (MEGF9) was the predicted target of miR-7 by databases. Luciferase report experiment results confirmed that MEGF9 could bind to miR-7. Among the 10 collected pairs of OA and healthy samples, the expression levels of miR-7 and MEGF9 were both up-regulated when compared with healthy subjects by qRT-PCR and immunohistochemistry (IHC). The increased MEGF9 levels were due to the interaction with epidermal growth factor receptor (EGFR) by co-immunoprecipitation. Evaluations found that upregulation of miR-7 or MEGF9 can increase the expression of EGFR, matrix metalloproteinase-13 (MMP-13) and a disintegrin like and metallopeptidase with thrombospondin type 1 motif 5 (ADAMTS-5), so as to aggravate cartilage degradation. In addition, this effect induced by miR-7/EGFR/MEGF9 axis was by activation of PI3K/AKT signaling. The IHC and western blot assay results on OA model mice also demonstrated that miR-7/EGFR/MEGF9 axis regulated cartilage degradation in vivo. In summary, miR-7/EGFR/MEGF9 axis may perform a crucial function in the regulation of OA, providing potential for OA treatment.
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Affiliation(s)
- Lifeng Jiang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xindie Zhou
- Department of Orthopedics, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Kai Xu
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Pengfei Hu
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiapeng Bao
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jin Li
- Department of Orthopedics Surgery, The Second Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Junfeng Zhu
- Department of Orthopedics Surgery, Suichang Branch of the Second Affiliated Hospital, Zhejiang University School of Medicine (Suichang County People's Hospital in Zhejiang Province), Suichang, LiShui, China
| | - Lidong Wu
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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15
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The potentials of distinct functions of autophagy to be targeted for attenuation of myocardial ischemia/reperfusion injury in preclinical studies: an up-to-date review. J Physiol Biochem 2021; 77:377-404. [PMID: 34173955 DOI: 10.1007/s13105-021-00824-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/07/2021] [Indexed: 12/16/2022]
Abstract
Despite remarkable advances in our knowledge about the function of autophagy in myocardial ischemia/reperfusion (I/R) injury, the debate continues over whether autophagy is protective or deleterious in cardiac I/R. Due to the complexity of autophagy signaling, autophagy can play a dual role in the pathological processes of myocardial I/R injury. Thus, more researches are needed to shed light on the complex roles of autophagy in cardioprotection for the future clinical development. Such researches can lead to the finding of new therapeutic strategies for improving cardiac I/R outcomes in patients. Several preclinical studies have targeted autophagy flux as a beneficial strategy against myocardial I/R injury. In this review, we aimed to discuss the complex contribution of autophagy in myocardial I/R injury, as well as the therapeutic agents that have been shown to be useful in reducing myocardial I/R injury by targeting autophagy. For this reason, we provided an updated summary of the data from in vivo, ex vivo, and in vitro experimental studies about the therapeutic agents that exert positive effects against myocardial I/R injury by modulating autophagy flux. By addressing these valuable studies, we try to provide a motivation for the promising hypothesis of "autophagy modulation as a therapeutic strategy against cardiac I/R" in the future clinical studies.
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16
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Attenuating senescence and dead cells accumulation as heart failure therapy: Break the communication networks. Int J Cardiol 2021; 334:72-85. [PMID: 33794236 DOI: 10.1016/j.ijcard.2021.03.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 02/03/2023]
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17
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Li C, Liu Y, Qin J, Liu Y, Ma L, Zhang S, Wang J, Wang S. Profiles of differentially expressed long noncoding RNAs and messenger RNAs in the myocardium of septic mice. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:199. [PMID: 33708826 PMCID: PMC7940873 DOI: 10.21037/atm-20-3830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Sepsis is the primary cause of mortality in the intensive care unit (ICU), mainly due to sepsis-induced dysfunction of essential organs such as the heart and lungs. This study investigated the myocardium's epigenetic characterization from septic mice to identify potential treatment targets for septic myocardial dysfunction. Methods Cecal ligation and puncture (CLP) was used to induce sepsis in male C57BL/6 mice. Hearts were collected 24 h after surgery to determine the expression profiles of long noncoding RNAs (lncRNAs) and messenger RNAs (mRNAs) by microarray. To validate the reliability of microarray results, we randomly chose six differentially expressed lncRNAs for qRT-PCR. Functional mapping of differentially expressed mRNAs was annotated with gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses; lncRNA-mRNA co-expression network was constructed to reveal connections between lncRNAs and mRNAs. Results Microarray analysis indicated that 1,568 lncRNAs and 2,166 mRNAs were differentially expressed in the myocardium from septic mice, which was further confirmed by qRT-PCR. KEGG pathway analysis showed that numerous differentially expressed mRNAs were relevant to tumor necrosis factor (TNF) and phosphatidylinositol-3-kinase/protein kinase B (PI3K/Akt) signaling pathways. Moreover, according to the lncRNA-mRNA co-expression network constructed by the above six lncRNAs and their interacting mRNAs, the co-expression network profiles had 57 network nodes and 134 connections, including 76 positive interactions and 58 negative interactions. Conclusions In mouse hearts, sepsis resulted in differential expression of lncRNAs and mRNAs related to TNF and PI3K-Akt signaling pathways, suggesting that lncRNAs and their interacting mRNAs may participate in the pathogenesis of septic myocardial dysfunction by regulating TNF and PI3K-Akt signaling pathways.
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Affiliation(s)
- Chengbao Li
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Yongchao Liu
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Jing Qin
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Yuhao Liu
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Lijie Ma
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Shouqin Zhang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Junjie Wang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Sheng Wang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
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18
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Wu Y, Liu H, Wang X. Cardioprotection of pharmacological postconditioning on myocardial ischemia/reperfusion injury. Life Sci 2020; 264:118628. [PMID: 33131670 DOI: 10.1016/j.lfs.2020.118628] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 10/08/2020] [Accepted: 10/16/2020] [Indexed: 12/26/2022]
Abstract
Acute myocardial infarction is associated with high rates of morbidity and mortality and can cause irreversible myocardial damage. Timely reperfusion is critical to limit infarct size and salvage the ischemic myocardium. However, reperfusion may exacerbate lethal tissue injury, a phenomenon known as myocardial ischemia/reperfusion (I/R) injury. Pharmacological postconditioning (PPC), a strategy involving medication administration before or during the early minutes of reperfusion, is more efficient and flexible than preconditioning or ischemic conditioning. Previous studies have shown that various mechanisms are involved in the effects of PPC. In this review, we summarize the relative effects and potential underlying mechanisms of PPC to provide a foundation for future research attempting to develop novel treatments against myocardial I/R injury.
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Affiliation(s)
- Yushi Wu
- Department of Cardiology, Heart Center, Zhujiang Hospital, Southern Medical University, NO. 253, Gongye Avenue, 510282 Guangzhou, China; Guangdong Provincial Biomedical Engineering Technology Research Center for cardiovascular Disease, 510282 Guangzhou, China; Sino-Japanese cooperation Platform for Translational Research in Heart Failure, 510282 Guangzhou, China; Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, 510282 Guangzhou, China
| | - Haiqiong Liu
- Department of Cardiology, Heart Center, Zhujiang Hospital, Southern Medical University, NO. 253, Gongye Avenue, 510282 Guangzhou, China; Guangdong Provincial Biomedical Engineering Technology Research Center for cardiovascular Disease, 510282 Guangzhou, China; Sino-Japanese cooperation Platform for Translational Research in Heart Failure, 510282 Guangzhou, China; Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, 510282 Guangzhou, China
| | - Xianbao Wang
- Department of Cardiology, Heart Center, Zhujiang Hospital, Southern Medical University, NO. 253, Gongye Avenue, 510282 Guangzhou, China; Guangdong Provincial Biomedical Engineering Technology Research Center for cardiovascular Disease, 510282 Guangzhou, China; Sino-Japanese cooperation Platform for Translational Research in Heart Failure, 510282 Guangzhou, China; Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, 510282 Guangzhou, China.
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19
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Luo X, Wu S, Jiang Y, Wang L, Li G, Qing Y, Liu J, Zhang D. Inhibition of autophagy by geniposide protects against myocardial ischemia/reperfusion injury. Int Immunopharmacol 2020; 85:106609. [PMID: 32446199 DOI: 10.1016/j.intimp.2020.106609] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 12/14/2022]
Abstract
Geniposide (GP), extracted from a traditional Chinese herb Gardenia jasminoides, has extensive pharmacological effects. But the effects and the potential mechanisms of GP on myocardial ischemia/reperfusion (I/R) injury are poorly understood. In present study, we investigated the effect of GP on myocardial I/R injury in vivo and hypoxia/reoxygenation (H/R) in vitro respectively, and its mechanism. The results showed that GP reduced myocardial infarct size, alleviated acute myocardial injury, improved cardiac function, regulated apoptosis-related proteins and inhibited apoptosis. In vitro experiments revealed that GP enhanced the cell viability, regulated apoptosis-related proteins and prevented cell apoptosis during H/R in H9c2 cells. GP inhibited the expression of autophagy-related proteins and autophagosome accumulation both in vivo and in vitro. The effects of GP were blocked by rapamycin (RAPA) administration. In summary, our results showed that GP protected against myocardial I/R injury and involved inhibition of autophagy, which might be through activating AKT/mTOR signaling pathways.
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Affiliation(s)
- Xuexiu Luo
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Shiyong Wu
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; Department of Vascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
| | - Youqing Jiang
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Liyou Wang
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Guoxing Li
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yuhong Qing
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Jian Liu
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
| | - Dongying Zhang
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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20
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Hu X, Liu B, Wu P, Lang Y, Li T. LncRNA Oprm1 overexpression attenuates myocardial ischemia/reperfusion injury by increasing endogenous hydrogen sulfide via Oprm1/miR-30b-5p/CSE axis. Life Sci 2020; 254:117699. [PMID: 32437793 DOI: 10.1016/j.lfs.2020.117699] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 12/21/2022]
Abstract
AIMS Ischemia/reperfusion (I/R) injury largely limits the efficacy of revascularization in acute myocardial infarction. Long noncoding RNA (lncRNA) Oprm1 is protective in cerebral I/R injury. This study aimed to investigate the effect of lncRNA Oprm1 on myocardial I/R injury and its mechanism. MAIN METHODS We ligated and then released the left anterior descending coronary artery of adult male rats to build the I/R model in vivo. At the same time, an H9c2 cardiomyocytes hypoxia-reoxygenation (H/R) model was also used. Myocardial infarction area, cardiac function, histology, TUNEL staining, cell viability, and vital protein expression was conducted and compared. KEY FINDINGS LncRNA Oprm1 was significantly down-regulated in the I/R injury model. When administered with the AAV9-Oprm1 vector, the myocardial injury and cardiac function were mitigated and preserved, with apoptosis reduced. The cystathionine-γ-lyase (CSE) expression and hydrogen sulfide (H2S) expression were increased. The dual-luciferase reporter gene revealed the targeted relationship between lncRNA Oprm1 and miR-30b-5p. In H9c2 cardiomyocytes models, the miR-30b-5p blocked the protective effect of lncRNA Oprm1 on H/R injury, when Bcl-2, Bcl-xl was down-regulated, and HIF-1α, Bnip-3, Caspase-3, and Caspase-9 up-regulated. SIGNIFICANCE LncRNA Oprm1can competitively combines with miR-30b-5p, which down-regulates the expression of CSE. When administered with lncRNA Oprm1, increased endogenous H2S can reduce apoptosis and protect the myocardium from I/R injury via activating PI3K/Akt pathway and inhibiting HIF1-α activity.
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Affiliation(s)
- Xiaomin Hu
- The Heart Center of Tianjin Third Central Hospital, Tianjin 300170, China
| | - Bojiang Liu
- The Heart Center of Tianjin Third Central Hospital, Tianjin 300170, China
| | - Peng Wu
- The Heart Center of Tianjin Third Central Hospital, Tianjin 300170, China
| | - Yuheng Lang
- The Heart Center of Tianjin Third Central Hospital, Tianjin 300170, China
| | - Tong Li
- The Heart Center of Tianjin Third Central Hospital, Tianjin 300170, China.
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Shi X, Tao G, Ji L, Tian G. Sappanone A Protects Against Myocardial Ischemia Reperfusion Injury by Modulation of Nrf2. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:61-71. [PMID: 32021092 PMCID: PMC6955610 DOI: 10.2147/dddt.s230358] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 12/05/2019] [Indexed: 12/27/2022]
Abstract
Background Oxidative stress is a major contributor to the onset and development of myocardial ischemia reperfusion injury (MIRI). Sappanone A (SA), a homoisoflavanone extracted from the heartwood of Caesalpinia sappan L., has been demonstrated to possess powerful antioxidant activity. Therefore, this study aimed to determine the protective effect of SA on MIRI and investigate its underlying mechanism. Methods The rat hearts were isolated and underwent 30-min ischemia, followed by 120-min reperfusion to establish the MIRI model, using the Langendorff method. SA was administrated intraperitoneally into rats 1 h prior to heart isolation. The myocardial infarct size and apoptosis were measured by TTC and terminal deoxynucleotidyl transferase dUTP nick end labeling staining. Myocardial enzyme activity, MDA content and the activities of SOD and GSH-Px were detected by colorimetric spectrophotometric method. Reactive oxygen species (ROS) level was detected by DCFH-DA probe. The change in Keap1/Nrf2 signaling pathway was evaluated by Western blotting. Results SA reduced myocardial infarct size and the release of CK-MB and LDH in a dose-dependent manner. Moreover, SA improved the recovery of cardiac function, inhibited MIRI-induced apoptosis, repressed the production of ROS and MDA, and enhanced the activities of SOD and GSH-Px. Mechanistically, SA downregulated Keap1, induced Nrf2 nuclear accumulation, and enhanced Nrf2 transcriptional activity, subsequently resulting in an increase in the expression of the Nrf2 target genes heme oxygenase-1 and NAD(P)H quinone dehydrogenase 1. Moreover, SA enhanced the phosphorylation of Nfr2, but the enhancement in Nfr2 phosphorylation was abrogated by PKC or PI3K inhibitor. Conclusion Collectively, it was demonstrated that SA prevents MIRI via coordinating the cellular antioxidant defenses and maintaining the redox balance, by modulation of Nrf2 via the PKC or PI3K pathway. Therefore, SA was a potential therapeutic drug for treating MIRI.
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Affiliation(s)
- Xiaojing Shi
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Guizhou Tao
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Lili Ji
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Ge Tian
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China
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22
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Li L, Li X, Zhang Z, Liu L, Liu T, Li S, Liu S, Zhou Y, Liu F. Effects of Hydrogen-rich Water on the PI3K/AKT Signaling Pathway in Rats with Myocardial Ischemia-reperfusion Injury. Curr Mol Med 2019; 20:396-406. [PMID: 31702499 DOI: 10.2174/1566524019666191105150709] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/15/2019] [Accepted: 10/21/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The effects of hydrogen-rich water on PI3K/AKT-mediated apoptosis were studied in rats subjected to myocardial ischemia-reperfusion injury (MIRI). Methdos: Sixty rats were divided randomly into a hydrogen-rich water group and a control group. The hearts were removed and fixed in a Langendorff device. Hearts from the control group were perfused with K-R solution, and hearts from the hydrogen-rich water group was perfused with K-R solution + hydrogen-rich water. The two treatment groups were then divided randomly into pre-ischemic period, ischemic period and reperfusion period groups(10 rats per group), which were subjected to reverse perfusion for 10 min, normal treatment for 20 min, and reperfusion for 20 min, respectively. The mRNA and protein expression levels of PI3K, AKT, p-AKT, FoxO1, Bim and Caspase-3 in each group were detected by RT-qPCR, immunohistochemistry (IHC) and Western blotting. Caspase-3 activity was detected by spectrophotometry. RESULTS Among the hydrogen-rich water group, the PI3K/AKT signaling pathway was significantly activated, and FoxO1, Bim, and Caspase-3 mRNA and protein levels were significantly decreased in ischemia-reperfusion subgroup compared with the preischemic and ischemic subgroups. In the ischemia-reperfusion hydrogen-rich water group, PI3K, AKT and p-AKT mRNA and protein expression levels were increased while the FoxO1, Bim and Caspase-3 expression levels were significantly decreased compared with those in the corresponding control group (P<0.05). CONCLUSION Hydrogen-rich water can activate the PI3K/AKT signaling pathway, alleviate ischemia-reperfusion injury in isolated rat hearts, and inhibit cardiomyocyte apoptosis.
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Affiliation(s)
- Liangtong Li
- Medical College, Hebei University, Baoding, 071000, China
| | - Xiangzi Li
- Medical College, Hebei University, Baoding, 071000, China
| | - Zhe Zhang
- Medical College, Hebei University, Baoding, 071000, China
| | - Li Liu
- Medical College, Hebei University, Baoding, 071000, China
| | - Tongtong Liu
- Affiliated Hospital of Hebei University, Baoding, 071000, China
| | - Shaochun Li
- Medical College, Hebei University, Baoding, 071000, China
| | - Sen Liu
- Medical College, Hebei University, Baoding, 071000, China
| | - Yujuan Zhou
- Medical College, Hebei University, Baoding, 071000, China
| | - Fulin Liu
- Affiliated Hospital of Hebei University, Baoding, 071000, China
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23
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Tian P, Wang Y, Liu H, Yang Y, Wu X, Wei H, Chen T. Preparation and Evaluation of the Fully Humanized Monoclonal Antibody GD-mAb Against Respiratory Syncytial Virus. Front Cell Infect Microbiol 2019; 9:275. [PMID: 31417879 PMCID: PMC6684759 DOI: 10.3389/fcimb.2019.00275] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 07/17/2019] [Indexed: 11/25/2022] Open
Abstract
Respiratory syncytial virus (RSV) is the major cause of pulmonary and bronchial inflammation in infants, young children, and immunocompromised adults, but therapeutic options to control RSV are limited. In the present study a single chain antibody against RSV (GD-scFv) was screened using phage display library panning technology and a full-length monoclonal antibody (GD-mAb) was developed from GD-scFv based on the sequence encoding Ig VH and Ig VL. The anti-RSV potential of GD-mAb was evaluated in vitro and in mice. Our results indicated that both GD-scFv (4.25 ± 2 nM) and GD-mAb (3.13 ± 0.89 nM) showed high binding capability and strong binding specificity to GD protein. GD-mAb effectively neutralized RSV and reduced the plaque number in a concentration-dependent manner through a plaque reduction neutralization assay. In mice, GD-mAb lowered the lung index and reduced the lung virus titer in the mouse lung (p < 0.05). Antibody treatment reduced the phosphorylated protein level in pathways of TLR4/NF-κB, MAPKs, and PI3K/Akt (p < 0.05) and correlated with an absence of pro-inflammatory factors TNF-α, IL-1β, and IL-6 in the mouse lung and serum (p < 0.05). In summary, these data suggest that GD-mAb may be an effective therapeutic agent for the treatment of RSV infections. Importance Currently, only a few therapeutic options are available to control respiratory RSV in humans. In this study, our group developed a full-length monoclonal antibody (GD-mAb) and reported a high binding specificity of the RSV surface glycoproteins G. Moreover, GD-mAb effectively neutralized RSV in vitro, and significantly lowered the lung index and reduced the lung virus titer in an infected mouse lung, which suggests that GD-mAb may serve as an effective antiviral agent for RSV infection.
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Affiliation(s)
- Puyuan Tian
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Yuqing Wang
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Hui Liu
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Yulu Yang
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Xiaoli Wu
- JiangXi University of Traditional Chinese Medicine, College of Basic Medicine, Nanchang, China
| | - Hua Wei
- State Key Laboratory of Food Science and Technology, Nanchang, China
| | - Tingtao Chen
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
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24
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Zhu Z, Zhao C. WITHDRAWN: LncRNA AK139128 promotes cardiomyocyte autophagy and apoptosis in myocardial hypoxia-reoxygenation injury. Life Sci 2019:116705. [PMID: 31369757 DOI: 10.1016/j.lfs.2019.116705] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 07/24/2019] [Accepted: 07/28/2019] [Indexed: 10/26/2022]
Abstract
This article has been withdrawn at the request of the editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Zhidong Zhu
- Department of Cardiology, Hospital 903 of PLA, Hangzhou City, Zhejiang Province 310013, China
| | - Chufeng Zhao
- Department of Emergency, Zhuji People's Hospital of Zhejiang Province, Zhuji City, Zhejiang Province 311800, China.
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The regulatory mechanisms of Yulangsan MHBFC reversing cardiac remodeling in rats based on eNOS-NO signaling pathway. Biomed Pharmacother 2019; 117:109141. [PMID: 31228800 DOI: 10.1016/j.biopha.2019.109141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/14/2019] [Accepted: 06/14/2019] [Indexed: 11/20/2022] Open
Abstract
Millettia pulchra Kurz var-laxior (Dunn) Z. Wei, a wild-growing plant of the family Fabaceae is known to possess multifarious medicinal properties. 17-Methoxyl-7-hydroxy-benzene-furanchalcone (MHBFC) is a flavonoid monomer extracted from its root, which has been used in traditional Chinese medicine, with a long history as a remedy of hypertension and cardiovascular remodeling. The present study was conducted to further investigate the regulatory mechanisms of MHBFC based on the endothelial nitric oxide synthase-nitric oxide (eNOS-NO) signaling pathway. The abdominal aorta of the male Sprague-Dawley rats was narrowed to induce cardiac remodeling, and the rats were given corresponding drugs for 6 weeks after operation. At the end of the experiment, the relevant indexes were detected. The results showed that Nω-nitro-L-arginine methyl ester (L-NAME) could increase the myocardial cell cross-section area, myocardial fibrosis, and the cardiac collagen volume fraction. The serum NO and eNOS levels and the expression of p-eNOS, p-PI3K and p-Akt protein were decreased, and myocardial microvascular endothelial cell (MMVEC) apoptosis increased. However, the above changes were reversed after treatment with MHBFC. These results indicated that MHBFC could increase eNOS protein phosphorylation by increasing PI3K and Akt protein phosphorylation, and activated the eNOS-NO signaling pathway, increased eNOS enzyme activity, catalyzed the generation of protective NO, and counteracted MMVEC apoptosis induced by cardiac remodeling, thereby protecting against myocardial damage and reversing cardiac remodeling.
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Deng Y, Zhang H. WITHDRAWN: Knockdown of lncRNA AK139128 alleviates cardiomyocyte autophagy and apoptosis of induced by myocardial hypoxia-reoxygenation injury via targeting miR-499/FOXO4 axis. Gene 2019:S0378-1119(19)30479-2. [PMID: 31075407 DOI: 10.1016/j.gene.2019.05.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/27/2019] [Accepted: 05/06/2019] [Indexed: 11/18/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Yudong Deng
- WuXie Town Health Center, Zhuji City, Zhejiang Province 311800, China
| | - Haiyan Zhang
- Department of Cardiology, Zhuji People's Hospital of Zhejiang Province, Zhuji City, Zhejiang Province 311800, China.
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Gong X, Liu H, Wang S, Liang S, Wang G. Exosomes derived from SDF1‐overexpressing mesenchymal stem cells inhibit ischemic myocardial cell apoptosis and promote cardiac endothelial microvascular regeneration in mice with myocardial infarction. J Cell Physiol 2019; 234:13878-13893. [PMID: 30720220 DOI: 10.1002/jcp.28070] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 12/14/2018] [Accepted: 12/18/2018] [Indexed: 01/23/2023]
Affiliation(s)
- Xu‐He Gong
- Department of Cardiology Beijing Friendship Hospital, Capital Medical University Beijing China
| | - Hui Liu
- Department of Cardiology State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Si‐Jia Wang
- Department of Emergency Beijing Friendship Hospital, Capital Medical University Beijing China
| | - Si‐Wen Liang
- Department of Cardiology Beijing Friendship Hospital, Capital Medical University Beijing China
| | - Guo‐Gan Wang
- Department of Cardiology State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
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Pretreatment with Total Flavonoid Extract from Dracocephalum Moldavica L. Attenuates Ischemia Reperfusion-induced Apoptosis. Sci Rep 2018; 8:17491. [PMID: 30504832 PMCID: PMC6269513 DOI: 10.1038/s41598-018-35726-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 11/08/2018] [Indexed: 02/08/2023] Open
Abstract
We previously demonstrated the cardio-protection mediated by the total flavonoid extracted from Dracocephalum moldavica L. (TFDM) following myocardial ischemia reperfusion injury (MIRI). The present study assessed the presence and mechanism of TFDM-related cardio-protection on MIRI-induced apoptosis in vivo. Male Sprague-Dawley rats experienced 45-min ischemia with 12 h of reperfusion. Rats pretreated with TFDM (3, 10 or 30 mg/kg/day) were compared with Sham (no MIRI and no TFDM), MIRI (no TFDM), and Positive (trapidil tablets, 13.5 mg/kg/day) groups. In MIRI-treated rats, high dose-TFDM (H-TFDM) pre-treatment with apparently reduced release of LDH, CK-MB and MDA, enhanced the concentration of SOD in plasma, and greatly reduced the infarct size, apoptotic index and mitochondrial injury. H-TFDM pretreatment markedly promoted the phosphorylation of PI3K, Akt, GSK-3β and ERK1/2 in comparison with the MIRI model group. Western blot analysis after reperfusion also showed that H-TFDM decreased release of Bax, cleaved caspase-3, caspase-7 and caspase-9, and increased expression of Bcl-2 as evident by the higher Bcl-2/Bax ratio. TFDM cardio-protection was influenced by LY294002 (PI3K inhibitor) and PD98059 (ERK1/2 inhibitor). Taken together, these results provide convincing evidence of the benefit of TFDM pretreatment due to inhibited myocardial apoptosis as mediated by the PI3K/Akt/GSK-3β and ERK1/2 signaling pathways.
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He J, Ye F, Tang X, Wei J, Xie J, Wu X, Wei X, Xu X, Huang R, Huang J. Comparison of effects of MHBFC on cardiac hypertrophy after banding of the abdominal aorta in wild-type mice and eNOS knockout mice. Biomed Pharmacother 2018; 109:1221-1232. [PMID: 30551372 DOI: 10.1016/j.biopha.2018.10.153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/22/2018] [Accepted: 10/25/2018] [Indexed: 11/16/2022] Open
Affiliation(s)
- Junhui He
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Fangxing Ye
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Xiaojun Tang
- Guangxi Medical College, Nanning, 530021, Guangxi, PR China
| | - Jinbin Wei
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Jiaxiu Xie
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Xiaomei Wu
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Xiaojie Wei
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Xiaohui Xu
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China
| | - Renbin Huang
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China.
| | - Jianchun Huang
- Pharmaceutical College, Guangxi Medical University, Nanning, 530021, Guangxi, PR China.
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Wang B, Wu Q, Lei L, Sun H, Michael N, Zhang X, Wang Y, Zhang Y, Ge B, Wu X, Wang Y, Xin Y, Zhao J, Li S. Long-term social isolation inhibits autophagy activation, induces postsynaptic dysfunctions and impairs spatial memory. Exp Neurol 2018; 311:213-224. [PMID: 30219732 DOI: 10.1016/j.expneurol.2018.09.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 08/14/2018] [Accepted: 09/12/2018] [Indexed: 12/23/2022]
Abstract
. Moreover, we found that L-PWSI increased the protein expression of p-AKT/AKT, p-mTOR/mTOR and p62, whereas the protein levels of LC3B and Beclin1 were decreased indicating an inhibition in autophagy activity. Intraperitoneal injection of rapamycin significantly potentiated fEPSP slope and cognition-related proteins expression in the L-PWSI mice. These results therefore suggest that L-PWSI induces postsynaptic dysfunction by disrupting the interaction between AMPAR, NMDAR and PSD-95, and inhibit the autophagy activity which led to impaired spatial memory and cognitive function.
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Affiliation(s)
- Bin Wang
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China.
| | - Qiong Wu
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Lei Lei
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China
| | - Hailun Sun
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Ntim Michael
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Xuan Zhang
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China
| | - Ying Wang
- Department of Cardiology, Institute of Heart and Vessel Diseases of Dalian Medical University, the Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China; Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning, China
| | - Yue Zhang
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Biying Ge
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China
| | - Xuefei Wu
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Yue Wang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning, China
| | - Yi Xin
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning, China.
| | - Jie Zhao
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China.
| | - Shao Li
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China.
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Yu SY, Dong B, Fang ZF, Hu XQ, Tang L, Zhou SH. Knockdown of lncRNA AK139328 alleviates myocardial ischaemia/reperfusion injury in diabetic mice via modulating miR-204-3p and inhibiting autophagy. J Cell Mol Med 2018; 22:4886-4898. [PMID: 30047214 PMCID: PMC6156366 DOI: 10.1111/jcmm.13754] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/10/2018] [Indexed: 01/13/2023] Open
Abstract
This study was aimed at investigating the effects of lncRNA AK139328 on myocardial ischaemia/reperfusion injury (MIRI) in diabetic mice. Ischaemia/reperfusion (I/R) model was constructed in normal mice (NM) and diabetic mice (DM). Microarray analysis was utilized to identify lncRNA AK139328 overexpressed in DM after myocardial ischaemia/reperfusion (MI/R). RT‐qPCR assay was utilized to investigate the expressions of lncRNA AK139328 and miR‐204‐3p in cardiomyocyte and tissues. Left ventricular end diastolic diameter (LVEDD), left ventricular end systolic diameter (LVESD), left ventricular ejection fraction (LVEF) and fractioning shortening (FS) were obtained by transthoracic echocardiography. Haematoxylin‐eosin (HE) staining and Masson staining were utilized to detect the damage of myocardial tissues degradation of myocardial fibres and integrity of myocardial collagen fibres. Evans Blue/TTC staining was used to determine the myocardial infarct size. TUNEL staining was utilized to investigate cardiomyocyte apoptosis. The targeted relationship between lncRNA AK139328 and miR‐204‐3p was confirmed by dual‐luciferase reporter gene assay. MTT assay was used for analysis of cardiomyocyte proliferation. Western blot was utilized to investigate the expression of alpha smooth muscle actin (α‐SMA), Atg7, Atg5, LC3‐II/LC3‐I and p62 marking autophagy. Knockdown of lncRNA AK139328 relieved myocardial ischaemia/reperfusion injury in DM and inhibited cardiomyocyte autophagy as well as apoptosis of DM. LncRNA AK139328 modulated miR‐204‐3p directly. MiR‐204‐3p and knockdown of lncRNA AK139328 relieved hypoxia/reoxygenation injury via inhibiting cardiomyocyte autophagy. Silencing lncRNA AK139328 significantly increased miR‐204‐3p expression and inhibited cardiomyocyte autophagy, thereby attenuating MIRI in DM.
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Affiliation(s)
- Si-Yang Yu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bo Dong
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhen-Fei Fang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xin-Qun Hu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Liang Tang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Sheng-Hua Zhou
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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TLR2 Regulates Allergic Airway Inflammation and Autophagy Through PI3K/Akt Signaling Pathway. Inflammation 2018; 40:1382-1392. [PMID: 28493079 DOI: 10.1007/s10753-017-0581-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Toll-like receptors (TLRs) are innate pattern recognition receptors that play a critical role in allergic inflammation, yet their contribution to autophagy in asthma remains poorly defined. Here, we investigate the role of Toll-like receptor 2 (TLR2) in phosphoinositide 3-kinases/protein kinase B (PI3K/Akt) pathway-mediated autophagy in ovalbumin-induced airway inflammation in mice. Wild-type (WT) and TLR2-knockout (TLR2-/-) C57BL/6 mice were ovalbumin-sensitized and ovalbumin-challenged. In ovalbumin-challenged WT mice, enhanced expression of TLR2 in lung tissue, remarkable inflammatory cell infiltrates, goblet cell hyperplasia, and increased mucus production were observed. The number of inflammatory cells and interleukin-13 (IL-13) levels increased, while interferon-gamma (IFN-γ) levels decreased in bronchoalveolar lavage fluid. Expression of PI3K, phospho-Akt, Beclin-1 and LC3-II was enhanced significantly. These changes were mitigated dose-dependently in 3-methyl adenine-treated mice. In contrast, similar but weaker changes were found in ovalbumin-challenged TLR2-/- mice, and the changes were not significantly attenuated by 3-methyl adenine treatment. These results indicate that TLR2 confers a pivotal role in allergic airway inflammation via regulating the PI3K/Akt signaling pathway-related autophagy in mice.
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Li X, Zhu Q, Liu Y, Yang Z, Li B. Gastrodin protects myocardial cells against hypoxia/reoxygenation injury in neonatal rats by inhibiting cell autophagy through the activation of mTOR signals in PI3K-Akt pathway. J Pharm Pharmacol 2017; 70:259-267. [PMID: 29148068 DOI: 10.1111/jphp.12838] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 09/21/2017] [Indexed: 12/20/2022]
Abstract
Abstract
Objectives
This study aimed to investigate the protective effect of gastrodin (GAS) on myocardial cells with hypoxia/reoxygenation (H/R) injury in neonatal rats and explore the underlying mechanism.
Methods
Myocardial cells were extracted from neonatal rats and divided into six groups: control, H/R, H/R + Low-Concentration GAS, H/R + Middle-Concentration GAS, H/R + High-Concentration GAS and H/R + High-Concentration GAS + AKT Inhibitor groups. After 48-h treatment, cell viability, autophagosome quantity and the expression levels of LC3-II, p62, Akt, pAkt, mammalian target of rapamycin (mTOR) and uncoordinated 51-like kinase 1 (ULK1) in myocardial cells were made comparisons among each group.
Key findings
Gastrodin improved the proliferation activity of myocardial cells under H/R injury in a dose-dependent manner and inhibited the level of cell autophagy. However, when AKT inhibitor was added, the effect of GAS was partly inhibited (P < 0.05). Gene and protein expressions showed that GAS made no significant effect on the expression quantity of Akt and mTOR genes (P > 0.05) but could significantly promote the phosphorylation of Akt and mTOR (P < 0.05). GAS had significant inhibiting effect on the expression of ULK1 (P < 0.05).
Conclusions
Gastrodin could protect against H/R injury of myocardial cells in neonatal rats by reducing the level of autophagy through the activation of mTOR signals in PI3K-Akt pathway.
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Affiliation(s)
- Xiang Li
- Department of Clinical Laboratory, the Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu, China
| | - Qinhui Zhu
- Department of Clinical Laboratory, Huaiyin Hospital of Huai'an City, Huai'an, Jiangsu, China
| | - Yuanyuan Liu
- Department of Endocrinology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China
| | - Zhiyong Yang
- Department of Cardiology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China
| | - Bin Li
- Department of Cardiology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China
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Abstract
Objective: We demonstrate the protective effects of the siRNA-mediated inhibition of the interleukin-28 receptor alpha (IL28RA) subunit on cardiomyocytes in hypoxia/reoxygenation (H/R) injury and explore the associated mechanism. Methods: After designing and synthesizing three pairs of siRNA that effectively reduced IL28RA gene expression in vitro (siRNA-6158, siRNA-6160, and siRNA-6162), primary neonatal rat cardiomyocytes were transfected using a liposome transfection method. Six groups were included based on the siRNA that was used and the treatment simulating reperfusion injury: control group, H/R group, H/R+negative control group, H/R+siRNA-6158 group, H/R+siRNA-6160 group, and H/R+siRNA-6162 group. Cell survival and apoptosis rates were measured along with lactate dehydrogenase levels in the cell culture supernatant. Protein levels of IL28RA, phosphatidylinositol 3-kinase, catalytic subunit gamma (PI3KCG), Bcl-2, Bax, and b-actin were also measured. Results: The H/R+siRNA-6158 and H/R+siRNA-6160 groups had significantly higher survival rates and increased PI3KCG-to-b-actin and Bcl-2-to-Bax ratios than the the H/R and H/R+negative control groups (p<0.05). The H/R+siRNA-6158 and H/R+siRNA-6160 groups also exhibited reduced rates of apoptosis and reduced IL28RA-to-b-actin ratios (p<0.05). No significant difference was observed among the H/R+siRNA-6162, H/R, and H/R+negative control groups. Conclusion: IL28RA siRNA-6158 and -6160 were able to protect cardiomyocytes from H/R injury by inhibiting apoptosis. This strategy of inhibiting IL28RA gene expression may reduce reperfusion injury in the treatment of patients with acute myocardial infarction.
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