1
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Musgrove MRB, Mikhaylova M, Bredy TW. Fundamental Neurochemistry Review: At the intersection between the brain and the immune system: Non-coding RNAs spanning learning, memory and adaptive immunity. J Neurochem 2024; 168:961-976. [PMID: 38339812 DOI: 10.1111/jnc.16071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024]
Abstract
Non-coding RNAs (ncRNAs) are highly plastic RNA molecules that can sequester cellular proteins and other RNAs, serve as transporters of cellular cargo and provide spatiotemporal feedback to the genome. Mounting evidence indicates that ncRNAs are central to biology, and are critical for neuronal development, metabolism and intra- and intercellular communication in the brain. Their plasticity arises from state-dependent dynamic structure states that can be influenced by cell type and subcellular environment, which can subsequently enable the same ncRNA with discrete functions in different contexts. Here, we highlight different classes of brain-enriched ncRNAs, including microRNA, long non-coding RNA and other enigmatic ncRNAs, that are functionally important for both learning and memory and adaptive immunity, and describe how they may promote cross-talk between these two evolutionarily ancient biological systems.
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Affiliation(s)
- Mason R B Musgrove
- Queensland Brain Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Marina Mikhaylova
- AG Optobiologie, Institute für Biologie, Humboldt Universität zu Berlin, Berlin, Germany
| | - Timothy W Bredy
- Queensland Brain Institute, The University of Queensland, Brisbane, Queensland, Australia
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2
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Bailly C, Degand C, Laine W, Sauzeau V, Kluza J. Implication of Rac1 GTPase in molecular and cellular mitochondrial functions. Life Sci 2024; 342:122510. [PMID: 38387701 DOI: 10.1016/j.lfs.2024.122510] [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: 12/11/2023] [Revised: 02/07/2024] [Accepted: 02/16/2024] [Indexed: 02/24/2024]
Abstract
Rac1 is a member of the Rho GTPase family which plays major roles in cell mobility, polarity and migration, as a fundamental regulator of actin cytoskeleton. Signal transduction by Rac1 occurs through interaction with multiple effector proteins, and its activity is regulated by guanine nucleotide exchange factors (GEFs) and GTPase-activating proteins (GAPs). The small protein is mainly anchored to the inner side of the plasma membrane but it can be found in endocellular compartments, notably endosomes and cell nuclei. The protein localizes also into mitochondria where it contributes to the regulation of mitochondrial dynamics, including both mitobiogenesis and mitophagy, in addition to signaling processes via different protein partners, such as the proapoptotic protein Bcl-2 and chaperone sigma-1 receptor (σ-1R). The mitochondrial form of Rac1 (mtRac1) has been understudied thus far, but it is as essential as the nuclear or plasma membrane forms, via its implication in regulation of oxidative stress and DNA damages. Rac1 is subject to diverse post-translational modifications, notably to a geranylgeranylation which contributes importantly to its mitochondrial import and its anchorage to mitochondrial membranes. In addition, Rac1 contributes to the mitochondrial translocation of other proteins, such as p53. The mitochondrial localization and functions of Rac1 are discussed here, notably in the context of human diseases such as cancers. Inhibitors of Rac1 have been identified (NSC-23766, EHT-1864) and some are being developed for the treatment of cancer (MBQ-167) or central nervous system diseases (JK-50561). Their effects on mtRac1 warrant further investigations. An overview of mtRac1 is provided here.
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Affiliation(s)
- Christian Bailly
- University of Lille, CNRS, Inserm, CHU Lille, UMR9020 - UMR1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, 59000 Lille, France; University of Lille, Faculty of Pharmacy, Institut de Chimie Pharmaceutique Albert Lespagnol (ICPAL), 3 rue du Professeur Laguesse, 59000 Lille, France; OncoWitan, Consulting Scientific Office, Lille (Wasquehal) 59290, France.
| | - Claire Degand
- University of Lille, CNRS, Inserm, CHU Lille, UMR9020 - UMR1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, 59000 Lille, France
| | - William Laine
- University of Lille, CNRS, Inserm, CHU Lille, UMR9020 - UMR1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, 59000 Lille, France
| | - Vincent Sauzeau
- Université de Nantes, CHU Nantes, CNRS, INSERM, Institut du thorax, Nantes, France
| | - Jérôme Kluza
- University of Lille, CNRS, Inserm, CHU Lille, UMR9020 - UMR1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, 59000 Lille, France
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3
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Wu Q, Yu S, Peng K. Silencing of FUN14 Domain Containing 1 Inhibits Platelet Activation in Diabetes Mellitus through Blocking Mitophagy. Crit Rev Immunol 2024; 44:25-33. [PMID: 38305334 DOI: 10.1615/critrevimmunol.2023050364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Platelet hyperactivity represents a deleterious physiological phenomenon in diabetes mellitus (DM). This study aimed to explore the role of FUN14 domain containing 1 (FUNDC1) in platelet activation within the context of DM and to uncover relevant mechanisms, with a focus on mitophagy. A mouse model of DM was established by high-fat feeding and streptozotocin injection. Platelets isolated from whole blood were exposed to carbonyl cyanide-4-(trifluo-romethoxy)phenylhydrazone (FCCP) to induce mitophagy. The relative mRNA expression of FUNDC1 was detected by quantitative real-time PCR (qRT-PCR). Western blotting was employed to measure the protein levels of FUNDC1, the ratio of LC3-II toLC3-I, and cleaved caspase-3. Immunofluorescence and flow cytometry were performed to assess LC3-positive mitochondria and platelet activation factor CD62P, respectively. Additionally, serum levels of β-thrombo-globulin (β-TG) and platelet factor 4 (PF4)were measured by enzyme-linked immunosorbent assay. FUNDC1 expression was elevated in DM mice, and its silencing decreased the body weight and fasting blood glucose. Inhibition of FUNDC1 also significantly attenuated FCCP-induced platelet mitophagy, as evidenced by the down-regulation of the LC3-II/LC3-I ratio, up-regulation of Tomm20, and diminished presence of LC3-positive mitochondria. Moreover, platelet activation was noted in DM mice; this activation was mitigated upon FUNDC1 silencing, which was confirmed by the down-regulation of cleaved caspase-3 and CD62P as well as reductions in β-TG and PF4 serum levels. Silencing of FUNDC1 inhibited platelet hyperactivity in DM by impeding mitophagy. As such, FUNDC1-midiated mitophagy may be a promising target for the treatment of DM and its associated cardiovascular complications related cardiovascular events.
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Affiliation(s)
- Qiang Wu
- Department of Clinical Laboratory Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China; Department of Clinical Laboratory Medicine, Sijing Hospital of the Songjiang District of Shanghai, Shanghai 201601, China
| | - Siwen Yu
- Department of Clinical Laboratory Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
| | - Kangkang Peng
- Department of Clinical Laboratory Medicine, Sijing Hospital of the Songjiang District of Shanghai, Shanghai 201601, China
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4
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Yang K, Wu J, Li S, Wang S, Zhang J, Wang YP, Yan YS, Hu HY, Xiong MF, Bai CB, Sun YQ, Chen WQ, Zeng Y, Yuan JL, Yin CH. NTRK1 knockdown induces mouse cognitive impairment and hippocampal neuronal damage through mitophagy suppression via inactivating the AMPK/ULK1/FUNDC1 pathway. Cell Death Discov 2023; 9:404. [PMID: 37907480 PMCID: PMC10618268 DOI: 10.1038/s41420-023-01685-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/03/2023] [Accepted: 10/13/2023] [Indexed: 11/02/2023] Open
Abstract
Hippocampal neuronal damage may induce cognitive impairment. Neurotrophic tyrosine kinase receptor 1 (NTRK1) reportedly regulates neuronal damage, although the underlying mechanism remains unclear. The present study aimed to investigate the role of NTRK1 in mouse hippocampal neuronal damage and the specific mechanism. A mouse NTRK1-knockdown model was established and subjected to pre-treatment with BAY-3827, followed by a behavioral test, Nissl staining, and NeuN immunofluorescence (IF) staining to evaluate the cognitive impairment and hippocampal neuronal damage. Next, an in vitro analysis was conducted using the CCK-8 assay, TUNEL assay, NeuN IF staining, DCFH-DA staining, JC-1 staining, ATP content test, mRFP-eGFP-LC3 assay, and LC3-II IF staining to elucidate the effect of NTRK1 on mouse hippocampal neuronal activity, apoptosis, damage, mitochondrial function, and autophagy. Subsequently, rescue experiments were performed by subjecting the NTRK1-knockdown neurons to pre-treatment with O304 and Rapamycin. The AMPK/ULK1/FUNDC1 pathway activity and mitophagy were detected using western blotting (WB) analysis. Resultantly, in vivo analysis revealed that NTRK1 knockdown induced mouse cognitive impairment and hippocampal tissue damage, in addition to inactivating the AMPK/ULK1/FUNDC1 pathway activity and mitophagy in the hippocampal tissues of mice. The treatment with BAY-3827 exacerbated the mouse depressive-like behavior induced by NTRK1 knockdown. The results of in vitro analysis indicated that NTRK1 knockdown attenuated viability, NeuN expression, ATP production, mitochondrial membrane potential, and mitophagy, while enhancing apoptosis and ROS production in mouse hippocampal neurons. Conversely, pre-treatment with O304 and rapamycin abrogated the suppression of mitophagy and the promotion of neuronal damage induced upon NTRK1 silencing. Conclusively, NTRK1 knockdown induces mouse hippocampal neuronal damage through the suppression of mitophagy via inactivating the AMPK/ULK1/FUNDC1 pathway. This finding would provide insight leading to the development of novel strategies for the treatment of cognitive impairment induced due to hippocampal neuronal damage.
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Affiliation(s)
- Kai Yang
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital; Beijing Maternal and Child Health Care Hospital, Capital Medical University, Beijing, 100026, China
| | - Jue Wu
- Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, 100853, China
| | - Shang Li
- Department of Anesthesiology, Peking University People's Hospital, Beijing, 100044, China
| | - Shan Wang
- Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, 100853, China
| | - Jing Zhang
- Prenatal Diagnosis Center, Shijiazhuang Obstetrics and Gynecology Hospital, Key Laboratory of Maternal and Fetal Medicine of Hebei Province, Shijiazhuang, Hebei, 050011, China
| | - Yi-Peng Wang
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital; Beijing Maternal and Child Health Care Hospital, Capital Medical University, Beijing, 100026, China
| | - You-Sheng Yan
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital; Beijing Maternal and Child Health Care Hospital, Capital Medical University, Beijing, 100026, China
| | - Hua-Ying Hu
- Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, 100853, China
| | - Ming-Fang Xiong
- Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Chao-Bo Bai
- Department of Neurology, Peking University Sixth Hospital, Peking University Institute of Mental Health, Beijing, 100191, China
| | - Yong-Qing Sun
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital; Beijing Maternal and Child Health Care Hospital, Capital Medical University, Beijing, 100026, China
| | - Wen-Qi Chen
- Prenatal Diagnosis Center, Shijiazhuang Obstetrics and Gynecology Hospital, Key Laboratory of Maternal and Fetal Medicine of Hebei Province, Shijiazhuang, Hebei, 050011, China
| | - Yang Zeng
- Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China.
| | - Jun-Liang Yuan
- Department of Neurology, Peking University Sixth Hospital, Peking University Institute of Mental Health, Beijing, 100191, China.
| | - Cheng-Hong Yin
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital; Beijing Maternal and Child Health Care Hospital, Capital Medical University, Beijing, 100026, China.
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5
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Bai Y, Liu Z, Qian T, Peng Y, Ma H, Hu H, Cheng G, Wen H, Xie L, Zheng D, Geng Q, Wang J, Wang H. Single-nucleus RNA sequencing unveils critical regulators in various hippocampal neurons for anti-N-methyl-D-aspartate receptor encephalitis. Brain Pathol 2023:e13156. [PMID: 36942475 DOI: 10.1111/bpa.13156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 02/28/2023] [Indexed: 03/23/2023] Open
Abstract
Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a neuropsychiatric disease with variable clinical manifestations caused by NMDAR autoantibody. The underlying molecular underpinnings of this disease are rarely characterized on a genomic scale. Anti-NMDAR encephalitis mainly affects the hippocampus, however, its effect on gene expression in hippocampal neurons is unclear at present. Here, we construct the active and passive immunization mouse models of anti-NMDAR encephalitis, and use single-nucleus RNA sequencing to investigate the diverse expression profile of neuronal populations isolated from different hippocampal regions. Dramatic changes in cell proportions and differentially expressed genes were observed in excitatory neurons of the dentate gyrus (DG) subregion. In addition, we found that ATP metabolism and biosynthetic regulators related genes in excitatory neurons of DG subregion were significantly affected. Kcnq1ot1 in inhibitory neurons and Meg3 in interneurons also changed. Notably, the latter two molecules exhibited opposite changes in different models. Therefore, the above genes were used as potential targets for further research on the pathological process of anti-NMDAR encephalitis. These data involve various hippocampal neurons, which delineate a framework for understanding the hippocampal neuronal circuit and the potential molecular mechanisms of anti-NMDAR encephalitis.
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Affiliation(s)
- Yunmeng Bai
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, the First Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Zhuhe Liu
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, China
| | - Tinglin Qian
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Yu Peng
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Huan Ma
- Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Hong Hu
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, the First Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Guangqing Cheng
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, the First Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Haixia Wen
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, China
| | - Lulin Xie
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, the First Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Dong Zheng
- Department of Neurology, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qingshan Geng
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, the First Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Jigang Wang
- Department of Nephrology, Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, the First Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Honghao Wang
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, China
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6
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Li H, Ren J, Li Y, Wu Q, Wei J. Oxidative stress: The nexus of obesity and cognitive dysfunction in diabetes. Front Endocrinol (Lausanne) 2023; 14:1134025. [PMID: 37077347 PMCID: PMC10107409 DOI: 10.3389/fendo.2023.1134025] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/02/2023] [Indexed: 04/05/2023] Open
Abstract
Obesity has been associated with oxidative stress. Obese patients are at increased risk for diabetic cognitive dysfunction, indicating a pathological link between obesity, oxidative stress, and diabetic cognitive dysfunction. Obesity can induce the biological process of oxidative stress by disrupting the adipose microenvironment (adipocytes, macrophages), mediating low-grade chronic inflammation, and mitochondrial dysfunction (mitochondrial division, fusion). Furthermore, oxidative stress can be implicated in insulin resistance, inflammation in neural tissues, and lipid metabolism disorders, affecting cognitive dysfunction in diabetics.
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Affiliation(s)
- Huimin Li
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Ren
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Yusi Li
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qian Wu
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Junping Wei
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Junping Wei,
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7
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Ge X, Wang L, Cui Q, Yan H, Wang Z, Ye S, Zhang Q, Fei A. Electroacupuncture improves cognitive impairment in diabetic cognitive dysfunction rats by regulating the mitochondrial autophagy pathway. J Physiol Sci 2022; 72:29. [DOI: 10.1186/s12576-022-00854-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 11/03/2022] [Indexed: 11/25/2022]
Abstract
Abstract
Background
Diabetes-associated cognitive dysfunction has become a major public health concern. However, the mechanisms driving this disease are elusive. Herein, we explored how electroacupuncture improves learning and memory function in diabetic rats.
Methods
The diabetic model was established by intraperitoneal injection of streptozotocin (STZ) in adult Sprague–Dawley rats. Rats were fed on high-fat and high-sugar diets. Learning and memory functions were assessed using behavioral tests. The hematoxylin and eosin (H&E) staining, Western blotting, real-time PCR, ELISA, immunohistochemistry, and transmission electronic microscopy (TEM) was performed to test related indicators.
Results
High-fat and high-sugar diets impaired learning and memory function in rats, while electroacupuncture treatment reversed these changes. The model group presented highly prolonged escape latency compared to the control group, indicating impaired learning and memory functions. The TEM examination showed that electroacupuncture enhanced Aβ clearance and mitochondrial autophagy in hippocampal neuronal cells by increasing DISC1 expression.
Conclusions
Electroacupuncture improves learning and memory function in diabetic rats by increasing DISC1 expression to promote mitophagy. This enhanced Aβ clearance, alleviating cytotoxicity in hippocampal neuronal cells.
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Li Z, Gao J, Sun D, Jiao Q, Ma J, Cui W, Lou Y, Xu F, Li S, Li H. LncRNA MEG3: Potential stock for precision treatment of cardiovascular diseases. Front Pharmacol 2022; 13:1045501. [PMID: 36523500 PMCID: PMC9744949 DOI: 10.3389/fphar.2022.1045501] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/11/2022] [Indexed: 10/13/2023] Open
Abstract
The prevalence and mortality rates of cardiovascular diseases are increasing, and new treatment strategies are urgently needed. From the perspective of basic pathogenesis, the occurrence and development of cardiovascular diseases are related to inflammation, apoptosis, fibrosis and autophagy of cardiomyocytes, endothelial cells and other related cells. The involvement of maternally expressed gene 3 (MEG3) in human disease processes has been increasingly reported. P53 and PI3K/Akt are important pathways by which MEG3 participates in regulating cell apoptosis. MEG3 directly or competitively binds with miRNA to participate in apoptosis, inflammation, oxidative stress, endoplasmic reticulum stress, EMT and other processes. LncRNA MEG3 is mainly involved in malignant tumors, metabolic diseases, immune system diseases, cardiovascular and cerebrovascular diseases, etc., LncRNA MEG3 has a variety of pathological effects in cardiomyocytes, fibroblasts and endothelial cells and has great clinical application potential in the prevention and treatment of AS, MIRI, hypertension and HF. This paper will review the research progress of MEG3 in the aspects of mechanism of action, other systemic diseases and cardiovascular diseases, and point out its great potential in the prevention and treatment of cardiovascular diseases. lncRNAs also play a role in endothelial cells. In addition, lncRNA MEG3 has shown biomarker value, prognostic value and therapeutic response measurement in tumor diseases. We boldly speculate that MEG3 will play a role in the emerging discipline of tumor heart disease.
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Affiliation(s)
- Zining Li
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Jialiang Gao
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Cardiovascular Division, Beijing, China
- Deputy Chief Physician, Beijing, China
| | - Di Sun
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Qian Jiao
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Jing Ma
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Weilu Cui
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Yuqing Lou
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Fan Xu
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Shanshan Li
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Master’s Degree Student, Beijing, China
- Cardiovascular Division, Beijing, China
| | - Haixia Li
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Cardiovascular Division, Beijing, China
- Chief Physician, Beijing, China
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LncRNA-MEG3 attenuates hyperglycemia-induced damage by enhancing mitochondrial translocation of HSP90A in the primary hippocampal neurons. Exp Cell Res 2022; 419:113320. [PMID: 35998683 DOI: 10.1016/j.yexcr.2022.113320] [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: 04/20/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/20/2022]
Abstract
The diabetic cognitive impairments are associated with high-glucose (HG)-induced mitochondrial dysfunctions in the brain. Our previous studies demonstrated that long non-coding RNA (lncRNA)-MEG3 alleviates diabetic cognitive impairments. However, the underlying mechanism has still remained elusive. Therefore, this study was designed to investigate whether the mitochondrial translocation of HSP90A and its phosphorylation are involved in lncRNA-MEG3-mediated neuroprotective effects of mitochondrial functions in HG-treated primary hippocampal neurons and diabetic rats. The primary hippocampal neurons were exposed to 75 mM glucose for 72 h to establish a HG model in vitro. Firstly, the RNA pull-down and RNA immunoprecipitation (RIP) assays clearly indicated that lncRNA-MEG3-associated mitochondrial proteins were Annexin A2, HSP90A, and Plectin. Although HG promoted the mitochondrial translocation of HSP90A and Annexin A2, lncRNA-MEG3 over-expression only enhanced the mitochondrial translocation of HSP90A, rather than Annexin A2, in the primary hippocampal neurons treated with or without HG. Meanwhile, Plectin mediated the mitochondrial localization of lncRNA-MEG3 and HSP90A. Furthermore, HSP90A threonine phosphorylation participated in regulating mitochondrial translocation of HSP90A, and lncRNA-MEG3 also enhanced mitochondrial translocation of HSP90A through suppressing HSP90A threonine phosphorylation. Finally, the anti-apoptotic role of mitochondrial translocation of HSP90A was found to be associated with inhibiting death receptor 5 (DR5) in HG-treated primary hippocampal neurons and diabetic rats. Taken together, lncRNA-MEG3 could improve mitochondrial functions in HG-exposed primary hippocampal neurons, and the underlying mechanisms were involved in enhanced mitochondrial translocation of HSP90A via suppressing HSP90A threonine phosphorylation, which may reveal a potential therapeutic target for diabetic cognitive impairments.
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10
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Xia P, Marjan M, Liu Z, Zhou W, Zhang Q, Cheng C, Zhao M, Tao Y, Wang Z, Ye Z. Chrysophanol postconditioning attenuated cerebral ischemia-reperfusion injury induced NLRP3-related pyroptosis in a TRAF6-dependent manner. Exp Neurol 2022; 357:114197. [PMID: 35932799 DOI: 10.1016/j.expneurol.2022.114197] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/28/2022] [Accepted: 07/31/2022] [Indexed: 11/04/2022]
Abstract
Individuals who suffer from post-CA (cardiac arrest) brain injury experience higher mortality and more severe functional disability. Neuroinflammation has been identified as a vital factor in cerebral ischemia-reperfusion injury (CIRI) following CA. Pyroptosis induces neuronal death by triggering an excessive inflammatory injury. Chrysophanol possesses robust anti-inflammatory features, and it is protective against CIRI. The purpose of this research was to assess the effect of Chrysophanol postconditioning on CIRI-induced pyroptotic cell death, and to explore its underlying mechanisms. CIRI was induced in rats by CA and subsequent cardiopulmonary resuscitation, and PC12 cells were exposed to oxygen-glucose deprivation/reoxygenation (OGD/R) to imitate CIRI in vitro. It was found that post-CA brain injury led to a notable cerebral damage revealed by histopathological changes and neurological outcomes. The existence of pyroptosis was also confirmed in in vivo and in vitro CIRI models. Moreover, we further confirmed that Chrysophanol, the main bioactive ingredient of Rhubarb, significantly suppressed expressions of pyroptosis-associated proteins, e.g., NLRP3, ASC, cleaved-caspase-1 and N-terminal GSDMD, and inhibited the expression of tumor necrosis factor receptor-associated factor 6 (TRAF6). Furthermore, NLRP3 overexpression neutralized the neuroprotection of Chrysophanol postconditioning, suggesting that pyroptosis was the major neuronal death pathway modulated by Chrysophanol postconditioning in OGD/R. Additionally, the neuroprotection of Chrysophanol postconditioning was also abolished by gain-of-function analyses of TRAF6. Finally, the results demonstrated that Chrysophanol postconditioning suppressed the interaction between TRAF6 and NLRP3. Taken together, our findings revealed that Chrysophanol postconditioning was protective against CIRI by inhibiting NLRP3-related pyroptosis in a TRAF6-dependent manner.
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Affiliation(s)
- Pingping Xia
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha 410008, Hunan Province, China
| | - Murat Marjan
- Department of Anesthesiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang, Uygur Autonomous Region, China
| | - Zhuoyi Liu
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha 410008, Hunan Province, China
| | - Wanqing Zhou
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Qian Zhang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Chen Cheng
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Minxi Zhao
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Yuanyuan Tao
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Zhihua Wang
- Department of Anesthesiology, Hainan General Hospital, Haikou, Hainan Province, China
| | - Zhi Ye
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha 410008, Hunan Province, China.
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The Role of Mitochondrial Quality Control in Cognitive Dysfunction in Diabetes. Neurochem Res 2022; 47:2158-2172. [PMID: 35661963 PMCID: PMC9352619 DOI: 10.1007/s11064-022-03631-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 05/05/2022] [Accepted: 05/07/2022] [Indexed: 12/26/2022]
Abstract
Type 2 diabetes (T2DM) is a well known risk factor for Alzheimer’s disease. Mitochondria are the center of intracellular energy metabolism and the main source of reactive oxygen species. Mitochondrial dysfunction has been identified as a key factor in diabetes-associated brain alterations contributing to neurodegenerative events. Defective insulin signaling may act in concert with neurodegenerative mechanisms leading to abnormalities in mitochondrial structure and function. Mitochondrial dysfunction triggers neuronal energy exhaustion and oxidative stress, leading to brain neuronal damage and cognitive impairment. The normality of mitochondrial function is basically maintained by mitochondrial quality control mechanisms. In T2DM, defects in the mitochondrial quality control pathway in the brain have been found to lead to mitochondrial dysfunction and cognitive impairment. Here, we discuss the association of mitochondrial dysfunction with T2DM and cognitive impairment. We also review the molecular mechanisms of mitochondrial quality control and impacts of mitochondrial quality control on the progression of cognitive impairment in T2DM.
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12
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He X, Pei S, Meng X, Hua Q, Zhang T, Wang Y, Zhang Z, Zhu X, Liu R, Guo Y, Chen L, Li D. Punicalagin Attenuates Neuronal Apoptosis by Upregulating 5-Hydroxymethylcytosine in the Diabetic Mouse Brain. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4995-5004. [PMID: 35412829 DOI: 10.1021/acs.jafc.2c00863] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Punicalagin exerts neuroprotective activity by improving AMP-activated kinase (AMPK) and mitochondrial Krebs cycle. AMPK and Krebs cycle metabolites regulate 5-hydroxymethylcytosine (5hmC) via acting on ten-eleven translocation (TET) enzymes. Therefore, we hypothesized that punicalagin inhibits diabetes-related neuronal apoptosis by upregulating 5hmC in the diabetic mouse brain. C57BL/6J mice aged 8 weeks were randomly separated into five groups (n = 10), normal control (NC), diabetes mellitus (DM), resveratrol (RES), low-dose punicalagin (LPU), and high-dose punicalagin (HPU). Compared with other groups, the neuronal apoptosis rate was significantly higher and the 5hmC level of the cerebral cortex was significantly lower in the DM group. The levels of TET2 and P-AMPKα/AMPKα were significantly lower in the DM group than in both LPU and HPU groups. The ratio of (succinic acid + fumaric acid)/α-ketoglutarate was significantly higher in the DM group than in other groups. The present results suggest that punicalagin upregulates 5hmC via activating AMPK and maintaining Krebs cycle homeostasis, thus inhibiting neuronal apoptosis in the diabetic mouse brain.
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Affiliation(s)
- Xin He
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Shengjie Pei
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Xiangyuan Meng
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Qinglian Hua
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Tianyu Zhang
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Yan Wang
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Zhizhao Zhang
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Xinyu Zhu
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Run Liu
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Yurong Guo
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Lei Chen
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
| | - Duo Li
- School of Public Health, Qingdao University, Qingdao 266000, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266000, China
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13
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Li G, Li J, Shao R, Zhao J, Chen M. FUNDC1: A Promising Mitophagy Regulator at the Mitochondria-Associated Membrane for Cardiovascular Diseases. Front Cell Dev Biol 2022; 9:788634. [PMID: 35096821 PMCID: PMC8797154 DOI: 10.3389/fcell.2021.788634] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 11/29/2021] [Indexed: 02/05/2023] Open
Abstract
Mitochondrial autophagy (or mitophagy) regulates the mitochondrial network and function to contribute to multiple cellular processes. The protective effect of homeostatic mitophagy in cardiovascular diseases (CVDs) has attracted increasing attention. FUN14 domain containing 1 (FUNDC1), an identified mitophagy receptor, plays an essential role in CVDs. Different expression levels of FUNDC1 and its phosphorylated state at different sites alleviate or exacerbate hypoxia and ischemia/reperfusion injury, cardiac hypertrophy, or metabolic damage through promotion or inhibition of mitophagy. In addition, FUNDC1 can be enriched at contact sites between mitochondria and the endoplasmic reticulum (ER), determining the formation of mitochondria-associated membranes (MAMs) that regulate cellular calcium (Ca2+) homeostasis and mitochondrial dynamics to prevent heart dysfunction. Moreover, FUNDC1 has also been involved in inflammatory cardiac diseases such as septic cardiomyopathy. In this review, we collect and summarize the evidence on the roles of FUNDC1 exclusively in various CVDs, describing its interactions with different cellular organelles, its involvement in multiple cellular processes, and its associated signaling pathways. FUNDC1 may become a promising therapeutic target for the prevention and management of various CVDs.
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Affiliation(s)
- Guoyong Li
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, China.,Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China.,West China School of Medicine, Sichuan University, Chengdu, China
| | - Junli Li
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Ruochen Shao
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, China.,Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China.,West China School of Medicine, Sichuan University, Chengdu, China
| | - Jiahao Zhao
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, China.,West China School of Medicine, Sichuan University, Chengdu, China
| | - Mao Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China.,Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, China
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14
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Teaima MH, Elasaly MK, Omar SA, El-Nabarawi MA, Shoueir KR. Wound healing activities of polyurethane modified chitosan nanofibers loaded with different concentrations of linezolid in an experimental model of diabetes. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102982] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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15
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Tai Y, Chen J, Tao Z, Ren J. Non-coding RNAs: New players in mitophagy and neurodegeneration. Neurochem Int 2021; 152:105253. [PMID: 34864089 DOI: 10.1016/j.neuint.2021.105253] [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: 07/02/2021] [Revised: 11/14/2021] [Accepted: 11/29/2021] [Indexed: 10/19/2022]
Abstract
Mitophagy controls mitochondrial quality to maintain cellular homeostasis, while aberrations in this process are responsible for neurodegenerative diseases. Mitophagy is initiated through the recruitment of autophagosomes in a ubiquitin-dependent or ubiquitin-independent manner under different stress conditions. Although the detailed molecular mechanisms of how mitophagy processes influence neurodegeneration remain largely uncharacterized, there is mounting evidence indicating that non-coding RNAs (ncRNAs), a variety of endogenous regulators, including microRNAs and long non-coding RNAs, extensively participate in mitophagy processes and play pivotal roles in the aging process and neurodegenerative diseases. Here, we reviewed the major mitophagy pathways modulated by some classical and newly found ncRNAs and summarized the diverse mechanisms in a regulatory network. We also discussed the generalizability of ncRNAs in the development of common neurodegenerative diseases related to proteotoxicity and the importance of mitophagy in the pathogenesis of these diseases. In summary, we propose that ncRNAs act as linkers between mitophagy and neurodegeneration, showing the potential therapeutic application of mitophagy regulation mediated by ncRNAs in neurodegenerative diseases.
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Affiliation(s)
- Yusi Tai
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Jing Chen
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Zhouteng Tao
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
| | - Jin Ren
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China.
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