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Hervás C, Peirotén I, González L, Alonso de Leciñana M, Alonso-López E, Casado L, De Celis-Ruíz E, Fernández Prieto AF, Frutos R, Gallego-Ruiz R, González Pérez de Villar N, Gutiérrez-Fernández M, Navia P, Otero-Ortega L, Pozo-Novoa J, Rigual R, Rodríguez-Pardo J, Ruiz G, Fuentes B. Glycaemia and ischaemia-reperfusion brain injury in patients with ischaemic stroke treated with mechanical thrombectomy (GLIAS-MT): an observational, unicentric, prospective study protocol. BMJ Open 2024; 14:e086745. [PMID: 39117402 DOI: 10.1136/bmjopen-2024-086745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/10/2024] Open
Abstract
INTRODUCTION Poststroke hyperglycaemia is an independent risk factor for poorer outcomes in patients treated with mechanical thrombectomy (MT) and is associated with a lower probability of functional recovery and higher mortality at 3 months. This study aims to evaluate the association between glucose levels during cerebral reperfusion with MT and functional recovery at 3 months, measured by subcutaneous continuous glucose monitoring (CGM) devices. METHODS This prospective observational study aims to recruit 100 patients with ischaemic stroke and large anterior circulation vessel occlusion, in whom MT is indicated. CGM will be performed using a Freestyle Libre ProIQ device (FSL-CGM, Abbott Diabetes Care, Alameda, California, USA), which will be implanted on admission to the emergency department, to monitor glucose levels before, during and after reperfusion. The study's primary endpoint will be the functional status at 3 months, as measured by the dichotomised modified Rankin Scale (0-2 indicating good recovery and 3-6 indicating dependency or death). We will analyse expression profiles of microRNA (miRNA) at the time of reperfusion and 24 hours later, as potential biomarkers of ischaemic-reperfusion injury. The most promising miRNAs include miR-100, miR-29b, miR-339, miR-15a and miR-424. All patients will undergo treatment according to current international recommendations and local protocols for the treatment of stroke, including intravenous thrombolysis if indicated. ETHICS AND DISSEMINATION This study (protocol V.1.1, dated 29 October 2021, code 6017) has been approved by the Clinical Research Ethics Committee of La Paz University Hospital (Madrid, Spain) and has been registered in ClinicalTrials.gov (NCT05871502). Study results will be disseminated through peer-reviewed publications in Open Access format and at conference presentations. TRIAL REGISTRATION NUMBER NCT05871502.
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Affiliation(s)
- Carlos Hervás
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Irene Peirotén
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Laura González
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - María Alonso de Leciñana
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Elisa Alonso-López
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Laura Casado
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Elena De Celis-Ruíz
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Andrés Francisco Fernández Prieto
- Department of Radiology (Neurointerventional Radiology), La Paz University Hospital, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Remedios Frutos
- Department of Radiology (Neurointerventional Radiology), La Paz University Hospital, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Rebeca Gallego-Ruiz
- Neurological Sciences and Cerebrovascular Research Laboratory, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Noemí González Pérez de Villar
- Diabetes Unit, Department of Endocrinology, La Paz University Hospital, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - María Gutiérrez-Fernández
- Neurological Sciences and Cerebrovascular Research Laboratory, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Pedro Navia
- Department of Radiology (Neurointerventional Radiology), La Paz University Hospital, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Laura Otero-Ortega
- Neurological Sciences and Cerebrovascular Research Laboratory, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Javier Pozo-Novoa
- Neurological Sciences and Cerebrovascular Research Laboratory, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Ricardo Rigual
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Jorge Rodríguez-Pardo
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Gerardo Ruiz
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
| | - Blanca Fuentes
- Department of Neurology and Stroke Centre, La Paz University Hospital and Department of Medicine, Universidad Autónoma de Madrid, La Paz University Hospital Research Institute (IdiPAZ), Madrid, Spain
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Li X, Gao T, Ma X, Zhong J, Qin L, Nian Y, Wang X, Luo Y. Extraction and identification of exosomes from three different sources of human ovarian granulosa cells and analysis of their differential miRNA expression profiles. J Assist Reprod Genet 2024; 41:1371-1385. [PMID: 38492155 PMCID: PMC11143209 DOI: 10.1007/s10815-024-03086-w] [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: 11/07/2023] [Accepted: 03/05/2024] [Indexed: 03/18/2024] Open
Abstract
OBJECTIVE As important functional cells in the ovary, ovarian granulosa cells are involved in the regulation of oocyte growth and development and play an important role in the study of female fertility preservation. Based on the importance of granulosa cell functionalism, in this study, we analyzed the exosome secretion capacity of human ovarian granulosa cells (SVOG/KGN-cell line, PGC-primary cells) and the differences in their miRNA expression. METHODS Cells were identified by hematoxylin-eosin staining (HE) and FSHR immunofluorescence staining; CCK8 and colony-forming assay were performed to compare cell proliferation capacity; exosomes were extracted and identified by ultra-high speed centrifugation, transmission electron microscopy (TEM), nanoparticle tracking analysis (NTA), and western blot analysis (WB), and the expression profile of each cellular exosomal miRNA was analyzed by miRNA high-throughput sequencing. RESULTS The proliferative abilities of the three granulosa cells differed, but all had the ability to secrete exosomes. In the exosomes of SVOG, KGN, and PGC cells, 218, 327, and 471 miRNAs were detected, respectively. When compared to the exosomal miRNAs of PGC cells, 111 miRNAs were significantly different in SVOG, and 70 miRNAs were washed two significantly different in KGN cells. These differential miRNA functions were mainly enriched in the cell cycle, cell division/differentiation, multicellular biogenesis, and protein binding. CONCLUSION Human ovarian granulosa cells of different origins are capable of secreting exosomes, but there are still some differences in their exosomes and exosomal miRNAs, and experimental subjects should be selected rationally according to the actual situation.
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Affiliation(s)
- Xiaorong Li
- Department of the Center for Reproductive Medicine, General Hospital of Ningxia Medical University, No. 1106 of Shengli Road, Xingqin District, Yinchuan, 750004, China.
- Key Laboratory of Fertility Maintenance, Ningxia Medical University, Yinchuan, 750004, China.
| | - Ting Gao
- Key Laboratory of Fertility Maintenance, Ningxia Medical University, Yinchuan, 750004, China
- Key Laboratory of Modernization of Hui Medicine, Ministry of Education, School of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, 750004, China
| | - Xiaohong Ma
- Department of the Center for Reproductive Medicine, General Hospital of Ningxia Medical University, No. 1106 of Shengli Road, Xingqin District, Yinchuan, 750004, China
| | - Jiawen Zhong
- Key Laboratory of Fertility Maintenance, Ningxia Medical University, Yinchuan, 750004, China
- Key Laboratory of Modernization of Hui Medicine, Ministry of Education, School of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, 750004, China
| | - Ling Qin
- Key Laboratory of Modernization of Hui Medicine, Ministry of Education, School of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, 750004, China
| | - Yan Nian
- Department of the Center for Reproductive Medicine, General Hospital of Ningxia Medical University, No. 1106 of Shengli Road, Xingqin District, Yinchuan, 750004, China
| | - Xueyi Wang
- Key Laboratory of Fertility Maintenance, Ningxia Medical University, Yinchuan, 750004, China
- Key Laboratory of Modernization of Hui Medicine, Ministry of Education, School of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, 750004, China
| | - Yuxue Luo
- Key Laboratory of Fertility Maintenance, Ningxia Medical University, Yinchuan, 750004, China
- Key Laboratory of Modernization of Hui Medicine, Ministry of Education, School of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, 750004, China
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Merz N, Hartel JC, Grösch S. How ceramides affect the development of colon cancer: from normal colon to carcinoma. Pflugers Arch 2024:10.1007/s00424-024-02960-x. [PMID: 38635059 DOI: 10.1007/s00424-024-02960-x] [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: 12/21/2023] [Revised: 03/16/2024] [Accepted: 04/03/2024] [Indexed: 04/19/2024]
Abstract
The integrity of the colon and the development of colon cancer depend on the sphingolipid balance in colon epithelial cells. In this review, we summarize the current knowledge on how ceramides and their complex derivatives influence normal colon development and colon cancer development. Ceramides, glucosylceramides and sphingomyelin are essential membrane components and, due to their biophysical properties, can influence the activation of membrane proteins, affecting protein-protein interactions and downstream signalling pathways. Here, we review the cellular mechanisms known to be affected by ceramides and their effects on colon development. We also describe which ceramides are deregulated during colorectal carcinogenesis, the molecular mechanisms involved in ceramide deregulation and how this affects carcinogenesis. Finally, we review new methods that are now state of the art for studying lipid-protein interactions in the physiological environment.
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Affiliation(s)
- Nadine Merz
- Goethe-University Frankfurt, Institute of Clinical Pharmacology, Theodor Stern Kai 7, 60590, Frankfurt, Germany
| | - Jennifer Christina Hartel
- Goethe-University Frankfurt, Institute of Clinical Pharmacology, Theodor Stern Kai 7, 60590, Frankfurt, Germany
| | - Sabine Grösch
- Goethe-University Frankfurt, Institute of Clinical Pharmacology, Theodor Stern Kai 7, 60590, Frankfurt, Germany.
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt Am Main, Germany.
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Wang L, Sun H, Cao L, Wang J. Role of HOXA1-4 in the development of genetic and malignant diseases. Biomark Res 2024; 12:18. [PMID: 38311789 PMCID: PMC10840290 DOI: 10.1186/s40364-024-00569-x] [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: 10/30/2023] [Accepted: 01/20/2024] [Indexed: 02/06/2024] Open
Abstract
The HOXA genes, belonging to the HOX family, encompass 11 members (HOXA1-11) and exert critical functions in early embryonic development, as well as various adult processes. Furthermore, dysregulation of HOXA genes is implicated in genetic diseases, heart disease, and various cancers. In this comprehensive overview, we primarily focused on the HOXA1-4 genes and their associated functions and diseases. Emphasis was placed on elucidating the impact of abnormal expression of these genes and highlighting their significance in maintaining optimal health and their involvement in the development of genetic and malignant diseases. Furthermore, we delved into their regulatory mechanisms, functional roles, and underlying biology and explored the therapeutic potential of targeting HOXA1-4 genes for the treatment of malignancies. Additionally, we explored the utility of HOXA1-4 genes as biomarkers for monitoring cancer recurrence and metastasis.
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Affiliation(s)
- Lumin Wang
- Gastroenterology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China.
| | - Haifeng Sun
- The Third Department of Medical Oncology, Shaanxi Provincial Cancer Hospital Affiliated to Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Li Cao
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, People's Republic of China
| | - Jinhai Wang
- Gastroenterology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China.
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Zhou R, Wu L, Jin N, Sha S, Ouyang Y. L-F001, a multifunctional fasudil-lipoic acid dimer, antagonizes hypoxic-ischemic brain damage by inhibiting the TLR4/MyD88 signaling pathway. Brain Behav 2023; 13:e3280. [PMID: 37822185 PMCID: PMC10726836 DOI: 10.1002/brb3.3280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/10/2023] [Accepted: 09/11/2023] [Indexed: 10/13/2023] Open
Abstract
INTRODUCTION Neonatal hypoxic-ischemic brain damage (HIBD) is a serious inflammatory injury. At present, the standard treatment for this disease is hypothermia therapy, and the effect of drug intervention is still limited. L-F001 is a compound of fasudil and lipoic acid. Previous in vitro experiments have confirmed that L-F001 has anti-inflammatory neuroprotective functions. However, its therapeutic effect on neonates with HIBD remains unknown. This study was aimed at exploring the therapeutic effect of L-F001 on HIBD rats. METHODS The newborn rats were divided into three groups: Sham operation group, HIBD group, and HIBD + L-F001 group. HE staining, Nissil staining, the immunofluorescence of iNOS and COX-2, ELISA (IL-1β, IL-6, TNF-α, and IL-10), and western blotting analyses were performed to determine the therapeutic effect of L-F001. Finally, we evaluated the growth and development of each group by measuring body weight. RESULTS The hippocampal structure of HIBD rats was disordered, and the Nissil body was small and shallow. The expressions of iNOS and COX-2 in HIBD rats were increased, whereas the expressions of IL-1β, IL-6, and TNF-α in plasma were upregulated, and the expression of IL-10 was decreased. L-F001 could improve the tissue structure and reduce the expression of iNOS and COX-2 in HIBD rats. Meanwhile, L-F001 could also reduce the expression of pro-inflammatory cytokines and restore the content of anti-inflammatory cytokines in plasma. We further found that the TLR4 pathway was activated after hypoxic-ischemia in neonatal rats. L-F001 could inhibit the activation of TLR4 pathway. Finally, we found that after L-F001 treatment, the body weight of HIBD rats increased significantly compared with the untreated group. CONCLUSIONS L-F001 antagonizes the inflammatory response after hypoxic-ischemia by inhibiting the activation of the TLR4 signaling pathway, thus playing a neuroprotective role. L-F001 may be a potential therapeutic agent for neonatal HIBD.
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Affiliation(s)
- Ruiyu Zhou
- Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
- The Affiliated Kashi HospitalSun Yat‐sen UniversityKashiChina
| | - Liqiang Wu
- Guangdong Provincial Emergency HospitalGuangzhouChina
| | - Ni Jin
- Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Sha Sha
- Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
| | - Ying Ouyang
- Sun Yat‐sen Memorial HospitalSun Yat‐sen UniversityGuangzhouChina
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Anchesi I, Schepici G, Mazzon E. LncRNAs and CircRNAs as Strategies against Pathological Conditions Caused by a Hypoxic/Anoxic State. Biomolecules 2023; 13:1622. [PMID: 38002304 PMCID: PMC10669691 DOI: 10.3390/biom13111622] [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: 09/26/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 11/26/2023] Open
Abstract
Brain damage can be induced by oxygen deprivation. It is known that hypoxic or anoxic conditions can lead to changes in the expression levels of non-coding RNAs (ncRNAs), which, in turn, can be related to Central Nervous System (CNS) injuries. Therefore, it could be useful to investigate the involvement of non-coding RNAs (ncRNAs), as well as the underlying mechanisms which are able to modulate them in brain damage induced by hypoxic or anoxic conditions. In this review, we focused on recent research that associates these conditions with long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs). The results of this review demonstrate that the expression of both lncRNAs and circRNAs can be influenced by oxygen deprivation conditions and so they can contribute to inducing damage or providing neuroprotection by affecting specific molecular pathways. Furthermore, several experimental studies have shown that ncRNA activity can be regulated by compounds, thus also modifying their transcriptomic profile and their effects on CNS damages induced by hypoxic/anoxic events.
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Affiliation(s)
| | | | - Emanuela Mazzon
- IRCCS Centro Neurolesi “Bonino-Pulejo”, Via Provinciale Palermo, Strada Statale 113, Contrada Casazza, 98124 Messina, Italy
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Dong Z, Jia L, Han W, Wang Y, Sheng M, Ren Y, Weng Y, Li H, Yu W. The protective effect of lncRNA NEAT1/miR-122-5p/Wnt1 axis on hippocampal damage in hepatic ischemic reperfusion young mice. Cell Signal 2023; 107:110668. [PMID: 37004832 DOI: 10.1016/j.cellsig.2023.110668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/27/2023] [Accepted: 03/30/2023] [Indexed: 04/03/2023]
Abstract
Hepatic ischemic reperfusion (HIR) is a common pathophysiological process in many surgical procedures such as liver transplantation (LT) and hepatectomy. And it is also an important factor leading to perioperative distant organ damage. Children undergoing major liver surgery are more susceptible to various pathophysiological processes, including HIR, since their brains are still developing and the physiological functions are still incomplete, which can lead to brain damage and postoperative cognitive impairment, thus seriously affecting the long-term prognosis of the children. However, the present treatments of mitigating HIR-induced hippocampal damage are not proven to be effective. The important role of microRNAs (miRNAs) in the pathophysiological processes of many diseases and in the normal development of the body has been confirmed in several studies. The current study explored the role of miR-122-5p in HIR-induced hippocampal damage progression. HIR-induced hippocampal damage mouse model was induced by clamping the left and middle lobe vessels of the liver of young mice for 1 h, removing the vessel clamps and re-perfusing them for 6 h. The changes in the level of miR-122-5p in the hippocampal tissues were measured, and its influences on the activity as well as apoptotic rate of neuronal cells were investigated. Short interfering RNA modified with 2'-O-methoxy substitution targeting long-stranded non-coding RNA (lncRNA) nuclear enriched transcript 1 (NEAT1) as well as miR-122-5p antagomir were used to further clarify the role played by the corresponding molecules in hippocampal injury in young mice with HIR. The result obtained in our study was that the expression of miR-122-5p in the hippocampal tissue of young mice receiving HIR is reduced. Upregulated expression of miR-122-5p reduces the viability of neuronal cells and promotes the development of apoptosis, thereby aggravating the damage of hippocampal tissue in HIR young mice. Additionally, in the hippocampal tissue of young mice receiving HIR, lncRNA NEAT1 exerts some anti-apoptotic effects by binding to miR-122-5p, promoting the expression of Wnt1 pathway. An essential observation of this study was the binding of lncRNA NEAT1 to miR-122-5p, which upregulates Wnt1 and inhibits HIR-induced hippocampal damage in young mice.
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Mfsd2a attenuated hypoxic-ischemic brain damage via protection of the blood-brain barrier in mfat-1 transgenic mice. Cell Mol Life Sci 2023; 80:71. [PMID: 36820986 PMCID: PMC9950179 DOI: 10.1007/s00018-023-04716-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/10/2023] [Accepted: 02/01/2023] [Indexed: 02/24/2023]
Abstract
Previous studies have shown that mfat-1 transgenic mice have protective effects against some central nervous system (CNS) disorders, owing to the high docosahexaenoic acid (DHA) content enriched in their brains. However, whether this protective effect is connected to the blood-brain barrier (BBB) remains unclear. This study aims to investigate the mechanisms of the protective effect against hypoxic-ischemic brain damage (HIBD) of mfat-1 transgenic mice. mfat-1 mice not only demonstrated a significant amelioration of neurological dysfunction and neuronal damage but also partly maintained the physiological permeability of the BBB after HIBD. We initially showed this was associated with elevated major facilitator superfamily domain-containing 2a (Mfsd2a) expression on the BBB, resulting from more lysophosphatidylcholine (LPC)-DHA entering the brain. Wild-type (WT) mice showed a similar Mfsd2a expression trend after long-term feeding with an LPC-DHA-rich diet. Knockdown of Mfsd2a by siRNA intra-cerebroventricular (ICV) injection neutralized the protective effect against HIBD-induced BBB disruption in mfat-1 mice, further validating the protective function of Mfsd2a on BBB. HIBD-induced BBB high permeability was attenuated by Mfsd2a, primarily through a transcellular pathway to decrease caveolae-like vesicle-mediated transcytosis. Taken together, these findings not only reveal that mfat-1 transgenic mice have higher expression of Mfsd2a on the BBB, which partly sustains BBB permeability via vesicular transcytosis to alleviate the severity of HIBD, but also suggest that dietary intake of LPC-DHA may upregulate Mfsd2a expression as a novel therapeutic strategy for BBB dysfunction and survival in HIBD patients.
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Zhang N, Yang L, Wen J, Cui H. miR-200b-3p antagomir inhibits neuronal apoptosis in oxygen-glucose deprivation (OGD) model through regulating β-TrCP. Brain Res 2023; 1800:148192. [PMID: 36463959 DOI: 10.1016/j.brainres.2022.148192] [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: 07/12/2022] [Revised: 10/16/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND Hypoxia-ischemic brain damage (HIBD) is a primary cause of morbidity and disability in survivors of preterm infants. We previously discovered that miR-200b-3p plays an important role in HIBD via targeting Slit2. This study was designed to identify novel targets of miR-200b-3p and investigate the relationship between miR-200b-3p and its downstream effectors. METHODS AND RESULTS Cultured primary rat hippocampal neurons were used in the model of oxygen-glucose deprivation (OGD) and RT-qPCR was utilized to detect the alterations of miR-200b-3p in these cells following the OGD. Our study found that the expression of miR-200b-3p was up-regulated in neurons post OGD. Bioinformatics analysis identified that β transducin repeat-containing protein (β-TrCP) is a target gene of miR-200b-3p, and our luciferase reporter gene assay confirmed that miR-200b-3p can interact with β-TrCP mRNA. Hypoxia-ischemic brain damage was induced in three-day-old SD rats and inhibition of miR-200b-3p by injection of antagomir into bilateral lateral ventricles enhanced β-TrCP expression at both the mRNA and protein levels in rats' brains. TUNEL staining and CCK-8 assays found that the survival of hippocampal neurons in the miR-200b-3p antagomir group was improved significantly (p<0.05), whereas apoptosis of neurons in the miR-200b-3p antagomir group was significantly decreased (p<0.05), as compared with the OGD group. However, silencing of β-TrCP by β-TrCP siRNA impaired the neuroprotective effect of miR-200b-3p antagomir. H&E staining showed that miR-200b-3p attenuated the pathological changes in the hippocampal region of rats with HIBD. CONCLUSION Our study has demonstrated that β-TrCP is a target gene of miR-200b-3p and that inhibition of miR-200b-3p by antagomir attenuates hypoxia-ischemic brain damage via β-TrCP.
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Affiliation(s)
- Nan Zhang
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lijun Yang
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jialin Wen
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hong Cui
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
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Potemkin N, Clarkson AN. Non-coding RNAs in stroke pathology, diagnostics, and therapeutics. Neurochem Int 2023; 162:105467. [PMID: 36572063 DOI: 10.1016/j.neuint.2022.105467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/18/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Ischemic stroke is a leading cause of death and disability worldwide. Methods to alleviate functional deficits after ischemic stroke focus on restoration of cerebral blood flow to the affected area. However, pharmacological or surgical methods such as thrombolysis and thrombectomy have a narrow effective window. Harnessing and manipulating neurochemical processes of recovery may provide an alternative to these methods. Recently, non-coding RNA (ncRNA) have been increasingly investigated for their contributions to the pathology of diseases and potential for diagnostic and therapeutic applications. Here we will review several ncRNA - H19, MALAT1, ANRIL, NEAT1, pseudogenes, small nucleolar RNA, piwi-interacting RNA and circular RNA - and their involvement in stroke pathology. We also examine these ncRNA as potential diagnostic biomarkers, particularly in circulating blood, and as targets for therapeutic interventions. An important aspect of this is a discussion of potential methods of treatment delivery to allow for targeting of interventions past the blood-brain barrier, including lipid nanoparticles, polymer nanoparticles, and viral and non-viral vectors. Overall, several long non-coding RNA (lncRNA) discussed here have strong implications for the development of pathology and functional recovery after ischemic stroke. LncRNAs H19 and ANRIL show potential as diagnostic biomarkers, while H19 and MALAT1 may prove to be effective therapeutics for both minimising damage as well as promoting recovery. Other ncRNA have also been implicated in ischemic stroke but are currently too poorly understood to make inferences for diagnosis or treatment. Whilst the field of ncRNAs is relatively new, significant work has already highlighted that ncRNAs represent a promising novel investigative tool for understanding stroke pathology, could be used as diagnostic biomarkers, and as targets for therapeutic interventions.
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Affiliation(s)
- Nikita Potemkin
- Department of Anatomy, Brain Health Research Centre and Brain Research New Zealand, University of Otago, Dunedin, 9054, New Zealand.
| | - Andrew N Clarkson
- Department of Anatomy, Brain Health Research Centre and Brain Research New Zealand, University of Otago, Dunedin, 9054, New Zealand.
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Li W, Shao C, Zhou H, Du H, Chen H, Wan H, He Y. Multi-omics research strategies in ischemic stroke: A multidimensional perspective. Ageing Res Rev 2022; 81:101730. [PMID: 36087702 DOI: 10.1016/j.arr.2022.101730] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/23/2022] [Accepted: 09/03/2022] [Indexed: 01/31/2023]
Abstract
Ischemic stroke (IS) is a multifactorial and heterogeneous neurological disorder with high rate of death and long-term impairment. Despite years of studies, there are still no stroke biomarkers for clinical practice, and the molecular mechanisms of stroke remain largely unclear. The high-throughput omics approach provides new avenues for discovering biomarkers of IS and explaining its pathological mechanisms. However, single-omics approaches only provide a limited understanding of the biological pathways of diseases. The integration of multiple omics data means the simultaneous analysis of thousands of genes, RNAs, proteins and metabolites, revealing networks of interactions between multiple molecular levels. Integrated analysis of multi-omics approaches will provide helpful insights into stroke pathogenesis, therapeutic target identification and biomarker discovery. Here, we consider advances in genomics, transcriptomics, proteomics and metabolomics and outline their use in discovering the biomarkers and pathological mechanisms of IS. We then delineate strategies for achieving integration at the multi-omics level and discuss how integrative omics and systems biology can contribute to our understanding and management of IS.
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Affiliation(s)
- Wentao Li
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Chongyu Shao
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Huifen Zhou
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Haixia Du
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Haiyang Chen
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Haitong Wan
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Yu He
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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12
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Fu J, Huang Y, Xian L. LncRNA SNHG15 regulates hypoxic-ischemic brain injury via miR-153-3p/SETD7 axis. Histol Histopathol 2022; 37:1113-1125. [PMID: 35791576 DOI: 10.14670/hh-18-489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hypoxic-ischemic encephalopathy (HIE) is a leading cause of fatality and morbidity in newborns. Long non-coding RNAs (lncRNAs) Small Nucleolar RNA Host Gene 15 (SNHG15) was elevated in the peripheral blood of patients with acute cerebral ischemia, but its role in HI brain injury remained elusive. Hence, this study aimed to investigate the effect of SNHG15 on HI brain injury and study the precise mechanism of action. In this study, a mouse model of HI brain injury was established through ligating right carotid arteries. The oxygen-glucose deprivation (OGD) model was established in PC12 cells. Results showed that SNHG15 was elevated in brain tissues of mice with HI brain injury, and knockdown of SNHG15 attenuated HI-induced impairment of neurobehavioral function, brain edema, brain injury, and cell apoptosis. Besides, SNHG15 acted as a miR-153-3p sponge. SETD7 was identified to be a target of miR-153-3p. Furthermore, down-regulation of SNHG15 inhibited the OGD-induced increase in SETD7 expression in PC12 cells. Moreover, SNHG15 modulated OGD-induced cell apoptosis and decrease of cell viability through the miR-153-3p/SETD7 axis. In conclusion, knockdown of SNHG15 alleviated HI brain injury through modulating the miR-153-3p/ SETD7 axis. SNHG15 may be a prospective target for HIE therapy.
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Affiliation(s)
- Jiding Fu
- Department of Intensive Care Unit, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yunbo Huang
- Department of Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Lewu Xian
- Department of Intensive Care Unit, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, Guangdong, China.
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13
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Reichelt-Wurm S, Pregler M, Wirtz T, Kretz M, Holler K, Banas B, Banas MC. The Interplay of NEAT1 and miR-339-5p Influences on Mesangial Gene Expression and Function in Various Diabetic-Associated Injury Models. Noncoding RNA 2022; 8:ncrna8040052. [PMID: 35893235 PMCID: PMC9326603 DOI: 10.3390/ncrna8040052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 11/16/2022] Open
Abstract
Mesangial cells (MCs), substantial cells for architecture and function of the glomerular tuft, take a key role in progression of diabetic kidney disease (DKD). Despite long standing researches and the need for novel therapies, the underlying regulatory mechanisms in MCs are elusive. This applies in particular to long non-coding RNAs (lncRNA) but also microRNAs (miRNAs). In this study, we investigated the expression of nuclear paraspeckle assembly transcript 1 (NEAT1), a highly conserved lncRNA, in several diabetes in-vitro models using human MCs. These cells were treated with high glucose, TGFβ, TNAα, thapsigargin, or tunicamycin. We analyzed the implication of NEAT1 silencing on mesangial cell migration, proliferation, and cell size as well as on mRNA and miRNA expression. Here, the miRNA hsa-miR-339-5p was not only identified as a potential interaction partner for NEAT1 but also for several coding genes. Furthermore, overexpression of hsa-miR-339-5p leads to a MC phenotype comparable to a NEAT1 knockdown. In-silico analyses also underline a relevant role of NEAT1 and hsa-miR-339-5p in mesangial physiology, especially in the context of DKD.
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Affiliation(s)
- Simone Reichelt-Wurm
- Department of Nephrology, University Hospital Regensburg, 93053 Regensburg, Germany; (M.P.); (T.W.); (K.H.); (B.B.); (M.C.B.)
- Correspondence: ; Tel.: +49-941-944-7388
| | - Matthias Pregler
- Department of Nephrology, University Hospital Regensburg, 93053 Regensburg, Germany; (M.P.); (T.W.); (K.H.); (B.B.); (M.C.B.)
| | - Tobias Wirtz
- Department of Nephrology, University Hospital Regensburg, 93053 Regensburg, Germany; (M.P.); (T.W.); (K.H.); (B.B.); (M.C.B.)
| | - Markus Kretz
- Regensburg Center for Biochemistry (RCB), University of Regensburg, 93053 Regensburg, Germany;
| | - Kathrin Holler
- Department of Nephrology, University Hospital Regensburg, 93053 Regensburg, Germany; (M.P.); (T.W.); (K.H.); (B.B.); (M.C.B.)
| | - Bernhard Banas
- Department of Nephrology, University Hospital Regensburg, 93053 Regensburg, Germany; (M.P.); (T.W.); (K.H.); (B.B.); (M.C.B.)
| | - Miriam C. Banas
- Department of Nephrology, University Hospital Regensburg, 93053 Regensburg, Germany; (M.P.); (T.W.); (K.H.); (B.B.); (M.C.B.)
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Bioinformatics-based analysis reveals IDR-1018-mediated ceRNA regulation network for protective effect on hypoxia-ischemic brain injury in neonatal mice. Exp Neurol 2022; 357:114159. [PMID: 35779615 DOI: 10.1016/j.expneurol.2022.114159] [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: 02/25/2022] [Revised: 06/07/2022] [Accepted: 06/26/2022] [Indexed: 11/22/2022]
Abstract
Activation of an innate immune response serves as a key, contributing factor in perinatal brain injury. The current study sought to evaluate the clinical significance of innate defense regulatory peptide 1018 (IDR-1018)-derived peptide mediating ceRNA regulation network as a biomarker in neonatal mice with hypoxic-ischemic brain damage (HIBD). Firstly, bioinformatics analyses were performed to screen the HIBD-related candidate genes, miRNAs, and lncRNAs. The StarBase, miRDB, and LncBase databases were retrieved to obtain the lncRNA-miRNA-mRNA network, which revealed the ceRNA regulatory network mediated by IDR-1018. Subsequently, RT-qPCR was adopted to determine the expression patterns of MIAT, miR-7a-5p, and Plp2 in neonatal mice with HIBD after treatment with IDR-1018. Moreover, the relationship among mRNA, miRNA, and lncRNA in primary hippocampal neurons was verified by means of dual-luciferase reporter assay and RIP assay. Initial findings demonstrated that Plp2, mmu-miR-7a-5p, and three lncRNAs (MIAT, XIST, and 1700020I14RIK) were related to HIBD. Moreover, IDR-1018 could relieve HIBD in neonatal mice. Plp2 and MIAT were down-regulated, while mmu-miR-7a-5p was up-regulated in the striatum, hippocampus, and cortical tissues of the neonatal mice with HIBD, whereas treatment with the IDR-1018 could revere these trends. Additionally, MIAT acted as a ceRNA of miR-7a-5p to elevate Plp2 expression. In conclusion, our findings highlighted that IDR-1018 relieved HIBD in neonatal mice via the MIAT/miR-7a-5p/Plp2 axis.
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15
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NEAT1 variant 1 weakens the genome-wide effect of miR-3122 on blocking H3K79me3 in bladder cancer. Aging (Albany NY) 2022; 14:4819-4826. [PMID: 35687898 PMCID: PMC9217706 DOI: 10.18632/aging.204113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/10/2022] [Indexed: 11/25/2022]
Abstract
Nuclear-enriched abundant transcript 1 (NEAT1) is one of the most well-studied long non-coding RNAs (lncRNAs) in multiple human carcinoma. Two distinct variants of NEAT1, however, are never illuminated their specific functions and mechanisms underlying carcinogenesis. In this study, biotin-labelled NEAT1 variants were generated to incubate with cell lysate of bladder cancer cell T24 cells, and fished a batch of RNA substances. Here, we observed that NEAT1.1 (the short transcript) could capture 122 microRNAs (miRNAs), 36 small nucleolar RNAs (snoRNAs), 55 lncRNAs and 38 mRNAs while NEAT1.2 (the long transcript) could obtain 142 miRNAs, 51 snoRNAs, 72 lncRNAs and 41 mRNAs. Furthermore, we also found that the distinctions of RNA binding substances between these two variants were mainly expressed in nucleus rather than cytoplasm. GO analysis indicated that these non-coding RNAs governed histone modification, nucleosome assembly and chromosome organization. We picked up miRNA miR-3122, which substantially interacted with NEAT1.1, and found that histone H3K79me3 was reduced in bladder cancer T24, BIU-87 and EJ-1 cells after miR-3122 overexpression, and rescued by NEAT1.1 additional compensation. Nonetheless, we failed to find that miR-3122 could interfere with expression of H3K79 methyltransferase disruptor of telomeric silencing-1 like (DOT1L). Interestingly, we harvested histone 3 fished by biotin-labelled miR-3122, and validated this intercrossing using RNA immunoprecipitation. Taken together, we demonstrated that NEAT1.1 weakened the effect of miR-3122 on H3K79me3 suppression in bladder cancer.
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16
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Ma W, Zhu K, Yin L, Yang J, Zhang J, Wu H, Liu K, Li C, Liu W, Guo J, Li L. Effects of ischemic postconditioning and long non-coding RNAs in ischemic stroke. Bioengineered 2022; 13:14799-14814. [PMID: 36420646 PMCID: PMC9704383 DOI: 10.1080/21655979.2022.2108266] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Stroke is a main cause of disability and death among adults in China, and acute ischemic stroke accounts for 80% of cases. The key to ischemic stroke treatment is to recanalize the blocked blood vessels. However, more than 90% of patients cannot receive effective treatment within an appropriate time, and delayed recanalization of blood vessels causes reperfusion injury. Recent research has revealed that ischemic postconditioning has a neuroprotective effect on the brain, but the mechanism has not been fully clarified. Long non-coding RNAs (lncRNAs) have previously been associated with ischemic reperfusion injury in ischemic stroke. LncRNAs regulate important cellular and molecular events through a variety of mechanisms, but a comprehensive analysis of potential lncRNAs involved in the brain protection produced by ischemic postconditioning has not been conducted. In this review, we summarize the common mechanisms of cerebral injury in ischemic stroke and the effect of ischemic postconditioning, and we describe the potential mechanisms of some lncRNAs associated with ischemic stroke.
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Affiliation(s)
- Wei Ma
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Kewei Zhu
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Luwei Yin
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Jinwei Yang
- Second Department of General Surgery, First People’s Hospital of Yunnan Province, Kunming, China
| | - Jinfen Zhang
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Hongjie Wu
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Kuangpin Liu
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Chunyan Li
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Wei Liu
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China
| | - Jianhui Guo
- Second Department of General Surgery, First People’s Hospital of Yunnan Province, Kunming, China,Jianhui Guo Second Department of General Surgery, First People’s Hospital of Yunnan Province, Kunming 650034, Yunnan, China
| | - Liyan Li
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, Kunming, China,CONTACT Liyan Li Institute of Neurosicence, Faculty of Basic Medical Science, Kunming Medical University, Kunming 650500, Yunnan, China
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17
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Zhou Z, Ren X, Zheng L, Li A, Zhou W. LncRNA NEAT1 stabilized Wnt3a via U2AF2 and activated Wnt/β-catenin pathway to alleviate ischemia stroke induced injury. Brain Res 2022; 1788:147921. [PMID: 35452660 DOI: 10.1016/j.brainres.2022.147921] [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: 07/15/2021] [Revised: 04/08/2022] [Accepted: 04/15/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Ischaemic stroke is the leading cause of mortality and disability in the world. LncRNA NEAT1 has been shown to play an important role in ischaemic injury, but the molecular mechanism remains unclear. METHODS qRT-PCR was used to determine the expression of lncRNA NEAT1 in OGD/R-induced BV-2 cells. Cell viability was assessed by an MTT assay, and cell apoptosis was assessed by flow cytometry. The expression of related proteins was evaluated by Western blotting and ELISA. The interactions among lncRNA NEAT1, U2AF2 and Wnt3a mRNA was demonstrated by RIP and RNA pulldown assays. XAV-939 was used as an inhibitor of the Wnt/β-catenin pathway. RESULTS LncRNA NEAT1 was found to be downregulated in OGD/R-induced BV-2 cells. Overexpression of lncRNA NEAT1 protected BV-2 cells against OGD/R-induced injury. LncRNA NEAT1 enhanced the stability of Wnt3a mRNA via U2AF2. Knockdown of Wnt3a or blockade of the Wnt/β-catenin pathway rescued the effect of lncRNA NEAT1. CONCLUSIONS LncRNA NEAT1 protected cells against OGD/R-induced apoptosis and the inflammatory response by activating the Wnt/β-catenin pathway through upregulation of Wnt3a in a U2AF2-dependent manner. LncRNA NEAT1 could be a promising therapeutic candidate for ischaemic stroke treatment in the future.
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Affiliation(s)
- Zhiwen Zhou
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, Changsha 410016, Hunan Province, PR China
| | - Xiang Ren
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, Changsha 410016, Hunan Province, PR China
| | - Lijun Zheng
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, Changsha 410016, Hunan Province, PR China
| | - Aiping Li
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, Changsha 410016, Hunan Province, PR China
| | - Wensheng Zhou
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, Changsha 410016, Hunan Province, PR China.
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Lu Q, Hou HM, Li S, Yuan J, Liu H, Xu Y. Long Non-coding RNA H19 Deteriorates Hypoxic-Ischemic Brain Damage by Interacting with MicroRNA-140-5p and STAT3. NANOSCALE RESEARCH LETTERS 2022; 17:43. [PMID: 35380290 PMCID: PMC8982750 DOI: 10.1186/s11671-022-03666-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVE Even though extensive studies have surveyed long non-coding RNA (lncRNA)-related networks in hypoxic-ischemic brain damage (HIBD), the concrete function of lncRNA H19 (H19) in HIBD is still in ambiguity. Therein, this work intends to decipher H19-related network of microRNA (miR)-140-5p and signal transducer and activator of transcription 3 (STAT3) in HIBD. METHODS Brain microvascular endothelial cells (BMECs) from BALB/c mice were isolated and induced by oxygen glucose deprivation (OGD). OGD-induced BMECs were transfected with depleted or restored H19, miR-140-5p or STAT3, and cell apoptosis, migration and angiogenesis were examined. H19, miR-140-5p and STAT3 expression and their internal connections were tested. RESULTS H19 and STAT3 were overexpressed while miR-140-5p was down-regulated in OGD-induced BMECs. H19 or STAT3 knockdown, or miR-140-5p restoration repressed apoptosis and improved migration and angiogenesis of OGD-induced BMECs. MiR-140-5p restoration negated the impacts of up-regulated H19 on OGD-induced BMECs. H19 bound to miR-140-5p to modulate STAT3 expression. CONCLUSION The work illustrates that depleting H19 or STAT3 or restoring miR-140-5p attenuates HIBD and supplies a novel perspective for HIBD management.
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Affiliation(s)
- Qian Lu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China
| | - Hai Man Hou
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China
| | - Shuo Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China
| | - Jing Yuan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China
| | - Han Liu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East Road, Erqi District, Zhengzhou, 450000, Henan, China.
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19
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Zhou ZW, Ren X, Zheng LJ, Li AP, Zhou WS. LncRNA NEAT1 ameliorate ischemic stroke via promoting Mfn2 expression through binding to Nova and activates Sirt3. Metab Brain Dis 2022; 37:653-664. [PMID: 35067795 DOI: 10.1007/s11011-021-00895-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/09/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Recent studies revealed that long non-coding RNAs (lncRNAs) have significant roles in regulating the pathogenesis of ischemia stroke, and oxygen-glucose deprivation/reoxygenation (OGD/R)-induced cell apoptosis. Aberrant expression of NEAT1 was found after the injury of ischemia-reperfusion, but the mechanism was not fully understood. METHODS The expression of NEAT1 and Mfn2 were detected in BV-2 and N2a cell with or without OGD/R-induced by qRT-PCR. Inflammatory cytokines secretion was detected by enzyme-linked immunosorbent assay (ELISA). The oxidative stress was evaluated by the examination of ROS, MDA and SOD levels. Flow cytometry and apoptosis marker detection by western blot were performed to examined apoptosis. RESULTS The expression of NEAT1 and Mfn2 were decreased in OGD/R-induced cell model. Overexpression of NEAT1 or Mfn2 reduced oxidative stress and apoptosis by OGD/R-induced in neuronal cells, while knockdown of Sirt3 reversed the protective effect of NEAT1 and Mfn2. NEAT1 stabilized Mfn2 mRNA via recruiting Nova. NEAT1 alleviates the oxidative stress and apoptosis by OGD/R-induced via activating Sirt3. CONCLUSION LncRNA NEAT1 stabilizes Mfn2 mRNA via recruiting Nova, therefore increase the expression of Mfn2 and alleviates ischemia-reperfusion induced oxidative stress and apoptosis via Mfn2/Sirt3 pathway.
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Affiliation(s)
- Zhi-Wen Zhou
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, No.89, Guhan Road, Changsha, 410016, Hunan Province, People's Republic of China
| | - Xiang Ren
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, No.89, Guhan Road, Changsha, 410016, Hunan Province, People's Republic of China
| | - Li-Jun Zheng
- Department of Rehabilitation Medicine, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410016, Hunan Province, People's Republic of China
| | - Ai-Ping Li
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, No.89, Guhan Road, Changsha, 410016, Hunan Province, People's Republic of China
| | - Wen-Sheng Zhou
- Departments of Neurology, Hunan Provincial People's Hospital, The First-Affiliated Hospital of Hunan Normal University, No.89, Guhan Road, Changsha, 410016, Hunan Province, People's Republic of China.
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Gao H, Zhang Y, Xue H, Zhang Q, Zhang Y, Shen Y, Bing X. Long Non-coding RNA Peg13 Alleviates Hypoxic-Ischemic Brain Damage in Neonatal Mice via miR-20a-5p/XIAP Axis. Neurochem Res 2022; 47:656-666. [PMID: 35043374 DOI: 10.1007/s11064-021-03474-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/21/2021] [Accepted: 10/26/2021] [Indexed: 01/01/2023]
Abstract
Long noncoding RNA (LncRNA) Peg13 has been demonstrated to protect against neurological diseases. However, its underlying mechanism in the progression of hypoxic-ischemic brain damage (HIBD) has not been well investigated. The expression of target genes was determined in neonatal mice with HIBD and in mouse hippocampal neurons during oxygen-glucose deprivation (OGD) using quantitative real-time PCR (qRT-PCR) and immunoblotting. Functional assays, including CCK-8 cell viability and apoptotic cell detection using TdT mediated dUTP nick ending labeling (TUNEL) assay were used to examine the neuroprotective role of Peg13 in mouse hippocampal neurons. Luciferase assays were performed to determine the regulatory mechanism of Peg13 in OGD-induced neuronal apoptosis. Peg13 was reduced in HIBD mice and OGD-treated mouse hippocampal neurons. Altered Peg13 expression relieved OGD-induced neuronal apoptosis. Mechanistically, Peg13 may serve as a sponge for miR-20a-5p to increase the expression of X chromosome-linked inhibitor of apoptosis (XIAP), a downstream target of miR-20a-5p. Our study showed that Peg13 fulfilled its anti-apoptotic function in neurons through suppressing XIAP expression by sponging miR-20a-5p. Together, Peg13 binds to miR-20a-5p to upregulate XIAP and alleviate HIBD in neonatal mice. The Peg13/miR-20a-5p/XIAP competing endogenous RNA (ceRNA) axis could be a potential therapeutic target for HIBD.
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Affiliation(s)
- Huan Gao
- Department of Children's Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Yue Zhang
- Department of Ophthalmonogy, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Huijing Xue
- Department of Children's Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Qifei Zhang
- Department of Children's Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Yan Zhang
- Department of Cardiology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Yusi Shen
- Second Department of Orthopedic Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Xiaosan Bing
- Department of Pediatrics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, No. 136, Jingzhou Street, Xiangcheng District, Xiangyang, 441000, Hubei, China.
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21
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Bi X, Zhang Y, Yu Y, Yuan J, Xu S, Liu F, Ye J, Liu P. MiRNA-339-5p promotes isoproterenol-induced cardiomyocyte hypertrophy by targeting VCP to activate the mTOR signaling. Cell Biol Int 2021; 46:288-299. [PMID: 34854520 DOI: 10.1002/cbin.11731] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 09/09/2021] [Accepted: 11/27/2021] [Indexed: 12/20/2022]
Abstract
MicroRNAs (miRNAs) regulate multiple biological processes and participate in various cardiovascular diseases. This study aims to investigate the role of miR-339-5p in cardiomyocyte hypertrophy and the involved mechanism. Neonatal rat cardiomyocytes (NRCMs) were cultured and stimulated with isoproterenol (ISO). The hypertrophic responses were monitored by measuring the cell surface area and expression of hypertrophic markers including β-myosin heavy chain (β-MHC) and atrial natriuretic factor (ANF). Bioinformatic prediction tools and dual-luciferase reporter assay were performed to identify the target gene of miR-339-5p. Quantitative real-time polymerase chain reaction and western blot analysis were used to determine the levels of miR-339-5p and its downstream effectors. Our data showed that miR-339-5p was upregulated during cardiomyocyte hypertrophy triggered by ISO. MiR-339-5p overexpression resulted in enlargement of cell size and increased the levels of hypertrophic markers. In contrast, inhibition of miR-339-5p significantly attenuated ISO-induced hypertrophic responses of NRCMs. Valosin-containing protein (VCP), a suppressor of cardiac hypertrophy via inhibiting mechanistic target of rapamycin (mTOR) signaling, was validated as a target of miR-339-5p. MiR-339-5p suppressed VCP protein expression, leading to elevated phosphorylation of mTOR and ribosomal protein S6 kinase (S6K). VCP depletion activated the mTOR/S6K cascade and could compromise the anti-hypertrophic effects of miR-339-5p inhibitor. Additionally, the hypertrophic responses caused by miR-339-5p was alleviated in the presence of mTOR inhibitor rapamycin. In conclusion, our research revealed that miR-339-5p promoted ISO-induced cardiomyocyte hypertrophy by targeting VCP to activate the mTOR signaling, suggesting a promising therapeutic intervention by interfering miR-339-5p.
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Affiliation(s)
- Xueying Bi
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Yuhong Zhang
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Youhui Yu
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Jing Yuan
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Siting Xu
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Fang Liu
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Jiantao Ye
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
| | - Peiqing Liu
- Department of Pharmacology and Toxicology, Sun Yat-Sen University, Guangdong, Guangzhou, China
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Sun W, Sun L, Sun X, Ma S. Long non-coding RNA SNHG7 upregulates FGF9 to alleviate oxygen and glucose deprivation-induced neuron cell injury in a miR-134-5p-dependent manner. Metab Brain Dis 2021; 36:2483-2494. [PMID: 34661812 DOI: 10.1007/s11011-021-00852-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/28/2021] [Indexed: 11/28/2022]
Abstract
Long non-coding RNA small nucleolar RNA host gene 7 (SNHG7) was reported to regulate the pathogenesis of ischemic stroke. The study aimed to disclose SNHG7 role in oxygen and glucose deprivation (OGD)-induced Neuro-2a (N2a) cell disorders. An OGD injury cell model was established using N2a cells. The expression of SNHG7, microRNA-134-5p (miR-134-5p) and fibroblast growth factor 9 (FGF9) was determined by quantitative real-time polymerase chain reaction. Protein expression was detected by western blot. Cell viability and Lactate Dehydrogenase (LDH) leakage were determined by cell counting kit-8 and LDH activity detection assays. Oxidative stress was investigated by Superoxide Dismutase and Catalase activity assays as well as Malondialdehyde and Reactive Oxygen Species detection kits. Cell apoptosis and caspase-3 activity were severally demonstrated by flow cytometry and caspase-3 activity assays. The interaction between miR-134-5p and SNHG7 or FGF9 was predicted by online databases, and identified by mechanism assays. OGD treatment decreased SNHG7 and FGF9 expression, but increased miR-134-5p expression. OGD treatment repressed cell viability, promoted LDH leakage and induced oxidative stress and apoptosis in N2a cells, which was rescued by SNHG7 overexpression. SNHG7 acted as a sponge for miR-134-5p, and regulated OGD-triggered cell damage by associating with miR-134-5p. Additionally, miR-134-5p depletion protected N2a cells from OGD-induced injury by targeting FGF9. Ectopic SNHG7 expression protected against OGD-induced neuronal cell injury by inducing FGF9 through sponging miR-134-5p, providing a novel therapeutic target for ischemic stroke.
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Affiliation(s)
- Wei Sun
- Department of Internal Medicine-Neurology, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian City, Liaoning Province, China
| | - Lu Sun
- Department of Cardiac Function Examination, Dalian Third People's Hospital Affiliated to Dalian Medical University, Dalian City, Liaoning Province, China
| | - Xiaopeng Sun
- Department of Internal Medicine-Neurology, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, No.826 Southwest Road, Shahekou District, Dalian City, 116021, Liaoning Province, China
| | - Shubei Ma
- Department of Internal Medicine-Neurology, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, No.826 Southwest Road, Shahekou District, Dalian City, 116021, Liaoning Province, China.
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Gu Z, Li Y, Zhang L, Chen X, Xu H. Foxp3 attenuates cerebral ischemia/reperfusion injury through microRNA-150-5p-modified NCS1. Exp Cell Res 2021:112942. [PMID: 34822811 DOI: 10.1016/j.yexcr.2021.112942] [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: 06/03/2021] [Revised: 11/12/2021] [Accepted: 11/18/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Cerebral ischemia/reperfusion injury (CI/RI) is a pathological process involving complicated molecular mechanisms. We investigated forkhead box P3 (Foxp3)-related mechanism in CI/RI with particular focus on microRNA (miR)-150-5p/nucleobase cation symporter-1 (NCS1) axis. METHODS A mouse model was constructed by middle cerebral artery occlusion (MCAO) method. Levels of Foxp3, miR-150-5p and NCS1 were assessed in brain tissues of MCAO mice. By determining the neurological behavior function, neurological deficits, brain tissue pathological characteristics, neuronal apoptosis, inflammatory factors, and oxidative stress-related factors, the functional role of Foxp3, miR-150-5p and NCS1 were evaluated in MCAO mice. The feedback loop was analyzed among Foxp3, miR-150-5p and NCS1. RESULTS The level of Foxp3 and NCS1 were reduced and that of miR-150-5p was augmented in MCAO mice. Foxp3 bound to miR-150-5p to target NCS1. Up-regulating Foxp3 or NCS1 or suppressing miR-150-5p improved neurological behavior function and neurological deficits, and reduced brain tissue pathological damage, neuronal apoptosis, inflammatory and oxidative stress reactions in MCAO mice. Silencing miR-150-5p or elevating NCS1 decreased Foxp3 silencing-mediated ischemic injury in MCAO mice. CONCLUSION Foxp3 is neuroprotective in CI/RI through binding to miR-150-5p to promote NCS1 expression.
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Affiliation(s)
- Zhen Gu
- Department of Neurosurgery, The Affiliated Hospital of Yunnan University, Kunming, 650011, Yunnan, China.
| | - Yajie Li
- Department of Neurosurgery, The Affiliated Hospital of Yunnan University, Kunming, 650011, Yunnan, China
| | - Liang Zhang
- Central Laboratory, The Affiliated Hospital of Yunnan University, Kunming, 650011, Yunnan, China
| | - Xu Chen
- Department of Neurosurgery, The Affiliated Hospital of Yunnan University, Kunming, 650011, Yunnan, China
| | - Hongling Xu
- Department of Neurosurgery, The Affiliated Hospital of Yunnan University, Kunming, 650011, Yunnan, China
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24
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Zhang L, Liu T, Wang P, Shen Y, Huang T. Overexpression of Long Noncoding RNA H19 Inhibits Cardiomyocyte Apoptosis in Neonatal Rats with Hypoxic-Ischemic Brain Damage Through the miR-149-5p/LIF/PI3K/Akt Axis. Biopreserv Biobank 2021; 19:376-385. [PMID: 34672722 DOI: 10.1089/bio.2020.0088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hypoxic-ischemic brain damage (HIBD) is a leading cause of fatality and neural system injury in neonates. This study aims to explore the effect of long noncoding RNA H19 on cardiomyocyte apoptosis in neonatal rats with HIBD. The neonatal rat model of HIBD was established. The cerebral infarction volume and apoptosis index of cardiomyocyte increased, while H19 expression decreased in neonatal rats with HIBD. After the lentivirus vector of overexpressed H19 was injected into neonatal rats with HIBD, the cardiomyocyte apoptosis was suppressed; levels of inflammatory factors and oxidative stress injury of myocardial tissues were reduced. The binding relationships between H19 and miR-149-5p, and miR-149-5p and leukemia inhibitory factor (LIF) were predicted by a bioinformatics website and verified using the dual-luciferase reporter gene assay. H19 competitively bound to miR-149-5p to upregulate LIF expression and activate the PI3K/Akt pathway. Moreover, a functional rescue experiment was carried out. Injection of Wortmannin reversed the inhibitory effect of H19 overexpression on cardiomyocyte apoptosis in neonatal rats with HIBD. It could be concluded that H19 competitively bound to miR-149-5p to upregulate LIF expression and activate the PI3K/Akt pathway, thus reducing cardiomyocyte apoptosis in neonatal rats with HIBD. This study may offer new insights for HIBD treatment.
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Affiliation(s)
- Lina Zhang
- Department of Pediatrics, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Tao Liu
- Department of Pediatrics, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Ping Wang
- Department of Hand and Foot Surgery, Nanchang Fifth Hospital, Nanchang, P.R. China
| | - Yanhong Shen
- Department of Pediatrics, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Tao Huang
- Department of Pediatrics, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
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25
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Li H, Qi J, Wei J, Xu B, Min S, Wang L, Si Y, Qiu H. Long non-coding RNA ANRIL mitigates neonatal hypoxic-ischemic brain damage via targeting the miR-378b/ATG3 axis. Am J Transl Res 2021; 13:11585-11596. [PMID: 34786084 PMCID: PMC8581876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Hypoxic-ischemic brain injury (HIBD) is the most common form of brain injury in newborns and is a major burden on society. However, the molecular mechanism of HIBD remains unclear. Long non-coding RNA (lncRNA) has been demonstrated to be a key regulator in brain development and numerous neurological diseases. The present study identified the role and underlying mechanism of lncRNA antisense non-coding RNA in the INK4 locus (ANRIL) in HIBD. The data indicated that ANRIL expression was significantly increased in hypoxia-stressed primary neurons and PC12 cells. Silencing ANRIL aggravated oxygen-glucose deprivation-induced cell injury. Mechanistically, microRNA (miR)-378b was predicted and confirmed as a direct target of ANRIL. A miR-378b inhibitor counteracted the effect of ANRIL on hypoxia-induced cell injury. Furthermore, ANRIL positively regulated autophagy related 3 (ATG3) expression and promoted autophagy through competitively binding to miR-378b. Overall, the present findings suggest that ANRIL exerts its protective effects via binding to miR-378b and upregulating ATG3 expression, suggesting the potential of ANRIL as a protective target for HIBD.
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Affiliation(s)
- Huiling Li
- Key Laboratory of Microecology-immune Regulatory Network and Related Disease, School of Basic Medicine, Jiamusi UniversityJiamusi 154007, Heilongjiang, China
| | - Jiafeng Qi
- Harbin Children’s HospitalHarbin 150010, Heilongjiang, China
| | - Jiannan Wei
- Department of Neurology, Jiamusi Central HospitalJiamusi 154002, Heilongjiang, China
| | - Beilei Xu
- School of Pharmacy, Harbin University of CommerceHarbin, Heilongjiang 150076, China
| | - Shuangwu Min
- Harbin Children’s HospitalHarbin 150010, Heilongjiang, China
| | - Liyang Wang
- Harbin Children’s HospitalHarbin 150010, Heilongjiang, China
| | - Yuan Si
- Harbin Children’s HospitalHarbin 150010, Heilongjiang, China
| | - Hongbin Qiu
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi UniversityJiamusi 154000, Heilongjiang, China
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Zhu K, Zhu X, Sun S, Yang W, Liu S, Tang Z, Zhang R, Li J, Shen T, Hei M. Inhibition of TLR4 prevents hippocampal hypoxic-ischemic injury by regulating ferroptosis in neonatal rats. Exp Neurol 2021; 345:113828. [PMID: 34343528 DOI: 10.1016/j.expneurol.2021.113828] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 06/23/2021] [Accepted: 07/28/2021] [Indexed: 01/07/2023]
Abstract
Inflammation and cell death play important roles in the pathogenesis of hypoxic-ischemic brain damage (HIBD). Toll-like receptor 4 (TLR4) triggers the activation of the inflammatory pathway. Ferroptosis, a newly identified type of regulated cell death, is implicated in various diseases involving neuronal injury. However, the role of ferroptosis in HIBD has not been elucidated. The objectives of this study were to explore the function and mechanism of TLR4 in neuronal ferroptosis in the context of HIBD. A neonatal rat model of hypoxia-ischemia (HI) and a cell model of oxygen-glucose deprivation (OGD) were employed. TAK-242, a TLR4-specific antagonist, was used to evaluate the effect of TLR4 on neuronal ferroptosis in vivo. A TAK-242 inhibitor and a p38 inhibitor (SB203580) were administered to HT22 hippocampal neurons to explore the association between TLR4 in inflammation and ferroptosis in vitro. The effects of TLR4 on ferroptosis were assessed by the Western blot, real-time PCR, immunofluorescence staining, cell viability and transmission electron microscopy (TEM) assays. HI insult significantly upregulated the TLR4, increased the p53 level, reduced the SLC7A11 and GPX4 levels, and caused mitochondrial damage, thereby inducing neuronal ferroptosis in the hippocampus. Inhibition of TLR4 inhibited the expression of ferroptosis-related proteins, decreased the expression of ferroptosis-related genes and the proinflammatory milieu, attenuated oxidative stress and mitochondrial injury and, finally, ameliorated the activation of hippocampal neuronal ferroptosis following HIBD. Consistent with the results of these in vivo experiments, TLR4 inhibition also attenuated OGD-induced ferroptosis by suppressing oxidative stress and p38MAPK signaling, ultimately increasing neuronal cell viability. Finally, the in vitro and in vivo results demonstrated that TAK-242 exerted neuroprotective and antiferroptotic effects by suppressing TLR4-p38 MAPK signaling. TLR4 activation induced neuronal ferroptosis following both HIBD and OGD. Inhibition of TLR4 attenuated oxidative stress-induced damage, decreased the activation of ferroptosis, and attenuated neuroinflammation following HIBD. In this study, we demonstrated that the inhibition of TLR4-p38 MAPK signaling modulates HIBD- or OGD-induced ferroptosis in neuronal cells and may play a novel role in brain homeostasis.
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Affiliation(s)
- Kaiyi Zhu
- Department of Neonatology, Neonatal Center, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Xing Zhu
- Department of Neonatology, Neonatal Center, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Shenghui Sun
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Wei Yang
- Department of Neurosurgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Shiqi Liu
- Department of Neonatology, Neonatal Center, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Zhen Tang
- Department of Neonatology, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Rong Zhang
- Department of Pediatric Intensive Care Unit, Shanxi Children's Hospital, Taiyuan 030000, China
| | - Jian Li
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Tao Shen
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Chinese Academy of Medical Sciences, Beijing 100730, China.
| | - Mingyan Hei
- Department of Neonatology, Neonatal Center, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China.
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27
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Vasudeva K, Dutta A, Munshi A. Role of lncRNAs in the Development of Ischemic Stroke and Their Therapeutic Potential. Mol Neurobiol 2021; 58:3712-3728. [PMID: 33818737 DOI: 10.1007/s12035-021-02359-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 03/11/2021] [Indexed: 12/20/2022]
Abstract
Stroke is a major cause of premature mortality and disability around the world. Therefore, identification of cellular and molecular processes implicated in the pathogenesis and progression of ischemic stroke has become a priority. Long non-coding RNAs (lncRNAs) are emerging as significant players in the pathophysiology of cerebral ischemia. They are involved in different signalling pathways of cellular processes like cell apoptosis, autophagy, angiogenesis, inflammation, and cell death, impacting the progression of cerebral damage. Exploring the functions of these lncRNAs and their mechanism of action may help in the development of promising treatment strategies. In this review, the current knowledge of lncRNAs in ischemic stroke, focusing on the mechanism by which they cause cellular apoptosis, inflammation, and microglial activation, has been summarized. Very few lncRNAs have been functionally annotated. Therefore, the therapies based on lncRNAs still face many hurdles since the potential targets are likely to increase with the identification of new ones. Majority of experiments involving the identification and function of lncRNAs have been carried out in animal models, and the role of lncRNAs in human stroke presents a challenge. However, mitigating these issues through more rational experimental design might lead to the development of lncRNA-based stroke therapies to treat ischemic stroke.
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Affiliation(s)
- Kanika Vasudeva
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, 151001, India
| | - Anyeasha Dutta
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, 151001, India
| | - Anjana Munshi
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, 151001, India.
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28
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Sas-Nowosielska H, Magalska A. Long Noncoding RNAs-Crucial Players Organizing the Landscape of the Neuronal Nucleus. Int J Mol Sci 2021; 22:ijms22073478. [PMID: 33801737 PMCID: PMC8037058 DOI: 10.3390/ijms22073478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 12/25/2022] Open
Abstract
The ability to regulate chromatin organization is particularly important in neurons, which dynamically respond to external stimuli. Accumulating evidence shows that lncRNAs play important architectural roles in organizing different nuclear domains like inactive chromosome X, splicing speckles, paraspeckles, and Gomafu nuclear bodies. LncRNAs are abundantly expressed in the nervous system where they may play important roles in compartmentalization of the cell nucleus. In this review we will describe the architectural role of lncRNAs in the nuclei of neuronal cells.
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29
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Wei C, Xu X, Zhu H, Zhang X, Gao Z. Promotive role of microRNA‑150 in hippocampal neurons apoptosis in vascular dementia model rats. Mol Med Rep 2021; 23:257. [PMID: 33576461 PMCID: PMC7893740 DOI: 10.3892/mmr.2021.11896] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 12/21/2020] [Indexed: 01/22/2023] Open
Abstract
Cognitive impairment is one of the primary features of vascular dementia (VD). However, the specific mechanism underlying the regulation of cognition function in VD is not completely understood. The present study aimed to explore the effects of microRNA (miR)‑150 on VD. To determine the effects of miR‑150 on cognitive function and hippocampal neurons in VD model rats, rats were subjected to intracerebroventricular injections of miR‑150 antagomiR. The Morris water maze test results demonstrated that spatial learning ability was impaired in VD model rats compared with control rats. Moreover, compared with antagomiR negative control (NC), miR‑150 antagomiR alleviated cognitive impairment and enhanced memory ability in VD model rats. The triphenyltetrazolium chloride, Nissl staining and immunohistochemistry results further demonstrated that miR‑150 knockdown improved the activity of hippocampal neurons in VD model rats compared with the antagomiR NC group. To validate the role of miR‑150 in neurons in vitro, the PC12 cell line was used. The flow cytometry and Hoechst 33342/PI double staining results indicated that miR‑150 overexpression significantly increased cell apoptosis compared with the mimic NC group. Moreover, the dual‑luciferase reporter gene assay results indicated that miR‑150 targeted HOXA1 and negatively regulated HOXA1 expression. Therefore, the present study indicated that miR‑150 knockdown ameliorated VD symptoms by upregulating HOXA1 expression in vivo and in vitro.
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Affiliation(s)
- Chengqun Wei
- Department of General Practice, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150001, P.R. China
| | - Xiuzhi Xu
- Department of General Practice, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150001, P.R. China
| | - Hongyan Zhu
- Department of General Practice, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150001, P.R. China
| | - Xiuyan Zhang
- Department of Neurology, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150001, P.R. China
| | - Zhan Gao
- Department of General Practice, Heilongjiang Provincial Hospital, Harbin, Heilongjiang 150001, P.R. China
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Han J, Yang S, Hao X, Zhang B, Zhang H, Xin C, Hao Y. Extracellular Vesicle-Derived microRNA-410 From Mesenchymal Stem Cells Protects Against Neonatal Hypoxia-Ischemia Brain Damage Through an HDAC1-Dependent EGR2/Bcl2 Axis. Front Cell Dev Biol 2021; 8:579236. [PMID: 33505958 PMCID: PMC7829500 DOI: 10.3389/fcell.2020.579236] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 11/20/2020] [Indexed: 12/13/2022] Open
Abstract
Hypoxia-ischemia brain damage (HIBD) is a neurological disorder occring in neonates, which is exacerbated by neuronal apoptosis. Mesenchymal stem cells (MSCs)-derived extracellular vesicles (EVs) have been proposed as a promising strategy for treating or preventing ischemia-related diseases. However, their mechanisms in HIBD remain unclear. Thus, we aimed to address the role of EV-derived microRNA (miR)-410 in HIBD. Neonatal HIBD mouse model was constructed using HI insult, from which neurons were isolated, followed by exposure to oxygen glucose deprivation (OGD). EVs were isolated from human umbilical cord (hUC)-derived MSCs. In silico analyses, dual-luciferase reporter gene and chromatin immunoprecipitation assays were adopted to determine relationships among miR-410, histone deacetylase 1 (HDAC1), early growth response protein 2 (EGR2), and B cell lymphoma/leukemia 2 (Bcl2). The functional roles of EV-derived miR-410 were determined using loss- and gain-of functions experiments, and by evaluating neuronal viability, cell-cycle distribution and neuronal apoptosis in vitro as well as modified neurological severity score (mNSS), edema formation, and cerebral infarction volume in vivo. hUC-MSCs-derived EVs protected against HIBD in vivo and inhibited the OGD-induced neuronal apoptosis in vitro. miR-410 was successfully delivered to neurons by hUC-MSCs-EVs and negatively targeted HDAC1, which inversely mediated the expression of EGR2/Bcl2. Upregulation of EV-derived miR-410 promoted the viability but inhibited apoptosis of neurons, which was reversed by HDAC1 overexpression. EV-derived miR-410 elevation reduced mNSS, edema formation, and cerebral infarction volume by increasing EGR2/Bcl2 expression through downregulating HDAC1 expression in vivo. In summary, EV-derived miR-410 impeded neuronal apoptosis by elevating the expression of EGR2/Bcl2 via HDAC1 downregulation, thereby providing a potential strategy for treating or preventing HIBD.
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Affiliation(s)
- Jun Han
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Si Yang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Xiaosheng Hao
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Bo Zhang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Hongbo Zhang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Cuijuan Xin
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yunpeng Hao
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
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Boros FA, Vécsei L, Klivényi P. NEAT1 on the Field of Parkinson's Disease: Offense, Defense, or a Player on the Bench? JOURNAL OF PARKINSON'S DISEASE 2021; 11:123-138. [PMID: 33325399 PMCID: PMC7990444 DOI: 10.3233/jpd-202374] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 11/13/2020] [Indexed: 12/11/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease worldwide. Considering the devastating symptoms, high prevalence, and lack of definitive diagnostic test, there is an urgent need to identify possible biomarkers and new therapeutic targets. Genes identified and/or proposed to be linked to PD encode proteins that fulfill diverse roles in cellular functions. There is a growing interest in identifying common traits which lead to the disease. Long non-coding RNAs have recently emerged as possible regulatory hubs of complex molecular changes affecting PD development. Among them, NEAT1 has attracted particular interest. It is a major component and the initiator of nuclear paraspeckles, thus regulating transcription and modifying protein functions. This review summarizes data available on the role of NEAT1 in PD. NEAT1 upregulation in PD has repeatedly been reported, however, whether this is part of a protective or a damaging mechanism is still a topic of debate. It has been proposed that NEAT1 propagates PD via its interaction with PINK1 and several micro RNAs and by modulating SNCA expression. On the other hand, findings of NEAT1 acting as a bona fide LRRK2 inhibitor argue for its protective role. These contradictory results could be due to the different disease models implemented. This calls attention to the difficulties posed by the complex patho-mechanisms of neurodegenerative disorders and the limitations of disease models. However, the potential of NEAT1 as a biomarker and as a therapeutic target for PD highly warrants further research to elucidate its exact role in this neurodegenerative disorder.
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Affiliation(s)
- Fanni Annamária Boros
- Department of Neurology, Albert Szent-Györgyi Clinical Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - László Vécsei
- Department of Neurology, Albert Szent-Györgyi Clinical Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
- MTA-SZTE Neuroscience Research Group of the Hungarian Academy of Sciences and the University of Szeged, Szeged, Hungary
- Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Péter Klivényi
- Department of Neurology, Albert Szent-Györgyi Clinical Center, Faculty of Medicine, University of Szeged, Szeged, Hungary
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Discoveries for Long Non-Coding RNA Dynamics in Traumatic Brain Injury. BIOLOGY 2020; 9:biology9120458. [PMID: 33321920 PMCID: PMC7763048 DOI: 10.3390/biology9120458] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/05/2020] [Accepted: 12/08/2020] [Indexed: 01/15/2023]
Abstract
Simple Summary The biomedical studies of traumatic brain injury (TBI) can lead to insight for treatment clinically. However, TBIs are occurred by various risk factors and showing heterogeneity that make difficult to accurate diagnosis for initiation treatment of patients. Therefore, identification of biomarkers requires to prediction and therapeutics for TBI treatment. The canonical function of the long non-coding RNAs (lncRNAs) have been recently shown to promote transcription, post-transcription, and protein activity in many different conditions. Therefore, understanding the molecular mechanisms that are altered by the expression of lncRNAs will allow the design of novel therapeutic strategies. Here, we review the molecular process of lncRNA as new targets and approaches in TBIs treatment. Abstract In recent years, our understanding of long non-coding RNAs (lncRNAs) has been challenged with advances in genome sequencing and the widespread use of high-throughput analysis for identifying novel lncRNAs. Since then, the characterization of lncRNAs has contributed to the establishment of their molecular roles and functions in transcriptional regulation. Although genetic studies have so far explored the sequence-based primary function of lncRNAs that guides the expression of target genes, recent insights have shed light on the potential of lncRNAs for widening the identification of biomarkers from non-degenerative to neurodegenerative diseases. Therefore, further advances in the genetic characteristics of lncRNAs are expected to lead to diagnostic accuracy during disease progression. In this review, we summarized the latest studies of lncRNAs in TBI as a non-degenerative disease and discussed their potential limitations for clinical treatment.
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