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Singh A, Chen R. The Duration of Oxygen and Glucose Deprivation (OGD) Determines the Effects of Subsequent Reperfusion on Rat Pheochromocytoma (PC12) Cells and Primary Cortical Neurons. Int J Mol Sci 2023; 24:7106. [PMID: 37108268 PMCID: PMC10138834 DOI: 10.3390/ijms24087106] [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: 03/18/2023] [Revised: 04/06/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Reperfusion is the fundamental treatment for ischaemic stroke; however, many ischaemic stroke patients cannot undergo reperfusion treatment. Furthermore, reperfusion can cause ischaemic reperfusion injuries. This study aimed to determine the effects of reperfusion in an in vitro ischaemic stroke model-oxygen and glucose deprivation (OGD) (0.3% O2)-with rat pheochromocytoma (PC12) cells and cortical neurons. In PC12 cells, OGD resulted in a time-dependent increase in cytotoxicity and apoptosis, and reduction in MTT activity from 2 h onwards. Reperfusion following shorter periods (4 and 6 h) of OGD recovered apoptotic PC12 cells, whereas after 12 h, OGD increased LDH release. In primary neurons, 6 h OGD led to significant increase in cytotoxicity, reduction in MTT activity and dendritic MAP2 staining. Reperfusion following 6 h OGD increased the cytotoxicity. HIF-1a was stabilised by 4 and 6 h OGD in PC12 cells and 2 h OGD onwards in primary neurons. A panel of hypoxic genes were upregulated by the OGD treatments depending on the duration. In conclusion, the duration of OGD determines the mitochondrial activity, cell viability, HIF-1a stabilization, and hypoxic gene expression in both cell types. Reperfusion following OGD of short duration is neuroprotective, whereas OGD of long duration is cytotoxic.
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Affiliation(s)
| | - Ruoli Chen
- School of Pharmacy and Bioengineering, Keele University, Staffordshire ST5 5BG, UK;
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2
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Cao H, Baranova A, Yue W, Yu H, Zhu Z, Zhang F, Liu D. miRNA-Coordinated Schizophrenia Risk Network Cross-Talk With Cardiovascular Repair and Opposed Gliomagenesis. Front Genet 2020; 11:149. [PMID: 32194626 PMCID: PMC7064629 DOI: 10.3389/fgene.2020.00149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 02/10/2020] [Indexed: 12/17/2022] Open
Abstract
Background Schizophrenia risk genes are widely investigated, but a systemic analysis of miRNAs contributing to schizophrenia is lacking. Methods Schizophrenia-associated genetic loci profiles were derived from a genome-wide association study (GWAS) from the Schizophrenia Working Group of the Psychiatric Genomics Consortium (PGC) dataset. Experimentally confirmed relationships between miRNAs and their target genes were retrieved from a miRTarBase. A competitive gene set association analysis for miRNA-target regulations was conducted by the Multi-marker Analysis of GenoMic Annotation (MAGMA) and further validated by literature-based functional pathway analysis using Pathway Studio. The association between the targets of three miRNAs and schizophrenia was further validated using a GWAS of antipsychotic treatment responses. Results Three novel schizophrenia-risk miRNAs, namely, miR-208b-3p, miR-208a-3p, and miR-494-5p, and their targetomes converged on calcium voltage-gated channel subunit alpha1 C (CACNA1C) and B-cell lymphoma 2 (BCL2), and these are well-known contributors to schizophrenia. Both miR-208a-3p and miR-208b-3p reduced the expression of the RNA-binding protein Quaking (QKI), whose suppression commonly contributes to demyelination of the neurons and to ischemia/reperfusion injury. On the other hand, both QKI and hsa-miR-494-5p were involved in gliomagenesis. Conclusion Presented results point at an orchestrating role of miRNAs in the pathophysiology of schizophrenia. The sharing of regulatory networks between schizophrenia and other pathologies may explain higher cardiovascular mortality and lower odds of glioma previously reported in psychiatric patients.
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Affiliation(s)
- Hongbao Cao
- Department of Psychiatry, First Hospital/First Clinical Medical College of Shanxi Medical University, Taiyuan, China.,Department of Genomics Research, R&D Solutions, Elsevier Inc., Rockville, MD, United States.,School of Systems Biology, George Mason University (GMU), Fairfax, VA, United States
| | - Ancha Baranova
- School of Systems Biology, George Mason University (GMU), Fairfax, VA, United States.,Research Center for Medical Genetics, Moscow, Russia
| | - Weihua Yue
- Department of Psychiatry Institute of Mental Health, Peking University, Bejing, China
| | - Hao Yu
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Zufu Zhu
- Department of Neurology, Jiangyin People's Hospital Affiliated to Southeast University, Jiangyin, China
| | - Fuquan Zhang
- Department of Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Dongbai Liu
- Department of Neurology, Jiangyin People's Hospital Affiliated to Southeast University, Jiangyin, China
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3
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Ravnik-Glavač M, Glavač D. Circulating RNAs as Potential Biomarkers in Amyotrophic Lateral Sclerosis. Int J Mol Sci 2020; 21:ijms21051714. [PMID: 32138249 PMCID: PMC7084402 DOI: 10.3390/ijms21051714] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/27/2020] [Accepted: 02/29/2020] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a complex multi-system neurodegenerative disorder with currently limited diagnostic and no therapeutic options. Despite the intense efforts no clinically applicable biomarkers for ALS are yet established. Most current research is thus focused, in particular, in identifying potential non-invasive circulating biomarkers for more rapid and accurate diagnosis and monitoring of the disease. In this review, we have focused on messenger RNA (mRNA), non-coding RNAs (lncRNAs), micro RNAs (miRNAs) and circular RNA (circRNAs) as potential biomarkers for ALS in peripheral blood serum, plasma and cells. The most promising miRNAs include miR-206, miR-133b, miR-27a, mi-338-3p, miR-183, miR-451, let-7 and miR-125b. To test clinical potential of this miRNA panel, a useful approach may be to perform such analysis on larger multi-center scale using similar experimental design. However, other types of RNAs (lncRNAs, circRNAs and mRNAs) that, together with miRNAs, represent RNA networks, have not been yet extensively studied in blood samples of patients with ALS. Additional research has to be done in order to find robust circulating biomarkers and therapeutic targets that will distinguish key RNA interactions in specific ALS-types to facilitate diagnosis, predict progression and design therapy.
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Affiliation(s)
- Metka Ravnik-Glavač
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
- Correspondence: (M.R.-G.); (D.G.)
| | - Damjan Glavač
- Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia
- Correspondence: (M.R.-G.); (D.G.)
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4
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Zhao H, Li G, Wang R, Tao Z, Ma Q, Zhang S, Han Z, Yan F, Li F, Liu P, Ma S, Ji X, Luo Y. Silencing of microRNA-494 inhibits the neurotoxic Th1 shift via regulating HDAC2-STAT4 cascade in ischaemic stroke. Br J Pharmacol 2020; 177:128-144. [PMID: 31465536 PMCID: PMC6976789 DOI: 10.1111/bph.14852] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE T helper cell 1 (Th1)-skewed neurotoxicity contributes to the poor outcome of stroke in rodents. Here, we have elucidated the mechanism of the Th1/Th2 shift in acute ischaemic stroke (AIS) patients at hyperacute phase and have looked for a miRNA-based therapeutic target. EXPERIMENTAL APPROACH MiR-494 levels in blood from AIS patients and controls were measured by real-time PCR. C57BL/6J mice were subjected to transient middle cerebral artery occlusion, and cortical neurons were subjected to oxygen-glucose deprivation. Luciferase reporter system, chromatin immunoprecipitation sequencing (ChIP-Seq), and ChIP-PCR were used to uncover possible mechanisms. KEY RESULTS In lymphocytes from AIS patients, there was a Th1/Th2 shift and histone deacetylase 2 (HDAC2) was markedly down-regulated. ChIP-seq showed that HDAC2 binding sites were enriched in regulation of Th1 cytokine production, and ChIP-PCR confirmed that HDAC2 binding was changed at the intron of STAT4 and the promoter of T-box transcription factor 21 (T-bet) in lymphocytes from AIS patients. MiR-494 was the most significantly increased miRNA in lymphocytes from AIS patients, and miR-494-3p directly targeted HDAC2. A strong association existed between miR-494 and Th1 cytokines, and neurological deficit as measured by the National Institute of Health Stroke Scale (NIHSS) in AIS patients. In vitro and in vivo experiments showed that antagomir-494 reduced Th1 shift-mediated neuronal and sensorimotor functional damage in the mouse model of ischaemic stroke, via the HDAC2-STAT4 pathway. CONCLUSION AND IMPLICATIONS We demonstrated that miR-494 inhibition prevented Th1-skewed neurotoxicity through regulation of the HDAC2-STAT4 cascade.
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Affiliation(s)
- Haiping Zhao
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular DiseasesBeijingChina
| | - Guangwen Li
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular DiseasesBeijingChina
| | - Rongliang Wang
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular DiseasesBeijingChina
| | - Zhen Tao
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular DiseasesBeijingChina
| | - Qingfeng Ma
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Sijia Zhang
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Ziping Han
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Feng Yan
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular DiseasesBeijingChina
| | - Fangfang Li
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Ping Liu
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Shubei Ma
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Xunming Ji
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Yumin Luo
- Institute of Cerebrovascular Disease Research and Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular DiseasesBeijingChina
- Beijing Institute for Brain DisordersCapital Medical UniversityBeijingChina
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5
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Zhao H, Li G, Zhang S, Li F, Wang R, Tao Z, Ma Q, Han Z, Yan F, Fan J, Li L, Ji X, Luo Y. Inhibition of histone deacetylase 3 by MiR-494 alleviates neuronal loss and improves neurological recovery in experimental stroke. J Cereb Blood Flow Metab 2019; 39:2392-2405. [PMID: 31510852 PMCID: PMC6893973 DOI: 10.1177/0271678x19875201] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
HDAC3 is an essential negative regulator of neuronal plasticity and memory formation. Although a chemical inhibitor has been invented, little is known about its endogenous modulators. We explored whether miR-494 affects HDAC3-mediated neuronal injury following acute ischemic stroke. A substantial increase in plasma miR-494 was detected in AIS patients and was positively associated with the mRS at one year after symptom onset. The miR-494 levels were transiently increased in the infarcted brain tissue of mice. In contrast, miR-494 levels were reduced in neurons but increased in the medium after OGD. Intracerebroventricular injection of miR-494 agomir reduced neuronal apoptosis and infarct volume at the acute stage of MCAO, promoted axonal plasticity and long-term outcomes at the recovery stage, suppressed neuronal ataxin-3 and HDAC3 expression and increased acetyl-H3K9 levels in the ipsilateral hemisphere. In vitro studies confirmed that miR-494 posttranslationally inhibited HDAC3 in neurons and prevented OGD-induced neuronal axonal injury. The HDAC3 inhibitor increased acetyl-H3K9 levels and reversed miR-494 antagomir-aggravated acute cerebral ischemic injury, as well as brain atrophy and long-term functional recovery. These results suggest that miR-494 may serve as a predictive biomarker of functional outcomes in AIS patients and a potential therapeutic target for the treatment of ischemic stroke.
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Affiliation(s)
- Haiping Zhao
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Guangwen Li
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
| | - Sijia Zhang
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
| | - Fangfang Li
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Rongliang Wang
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
| | - Zhen Tao
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
| | - Qingfeng Ma
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Ziping Han
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Feng Yan
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Junfen Fan
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Lingzhi Li
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
| | - Xunming Ji
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Yumin Luo
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China.,Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
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6
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Abstract
Stroke remains a leading cause of disability and death worldwide despite significant scientific and therapeutic advances. Therefore, there is a critical need to improve stroke prevention and treatment. In this review, we describe several examples that leverage nucleic acid therapeutics to improve stroke care through prevention, acute treatment, and recovery. Aptamer systems are under development to increase the safety and efficacy of antithrombotic and thrombolytic treatment, which represent the mainstay of medical stroke therapy. Antisense oligonucleotide therapy has shown some promise in treating stroke causes that are genetically determined and resistant to classic prevention approaches such as elevated lipoprotein (a) and cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Targeting microRNAs may be attractive because they regulate factors involved in neuronal cell death and reperfusion-associated injury, as well as neurorestorative pathways. Lastly, microRNAs may aid reliable etiologic classification of stroke subtypes, which is important for effective secondary stroke prevention.
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Affiliation(s)
- Nils Henninger
- Department of Neurology, University of Massachusetts Medical School, 55 Lake Ave, North, Worcester, MA, 01655, USA.
- Department of Psychiatry, University of Massachusetts Medical School, 55 Lake Ave, North, Worcester, MA, 01655, USA.
| | - Yunis Mayasi
- Division of Neurocritical Care, Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, 600 N. Wolfe Street, Baltimore, MD, 21287, USA
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7
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MicroRNA in Brain pathology: Neurodegeneration the Other Side of the Brain Cancer. Noncoding RNA 2019; 5:ncrna5010020. [PMID: 30813461 PMCID: PMC6468660 DOI: 10.3390/ncrna5010020] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/06/2019] [Accepted: 02/15/2019] [Indexed: 12/20/2022] Open
Abstract
The mammalian brain is made up of billions of neurons and supporting cells (glial cells), intricately connected. Molecular perturbations often lead to neurodegeneration by progressive loss of structure and malfunction of neurons, including their death. On the other side, a combination of genetic and cellular factors in glial cells, and less frequently in neurons, drive oncogenic transformation. In both situations, microenvironmental niches influence the progression of diseases and therapeutic responses. Dynamic changes that occur in cellular transcriptomes during the progression of developmental lineages and pathogenesis are controlled through a variety of regulatory networks. These include epigenetic modifications, signaling pathways, and transcriptional and post-transcriptional mechanisms. One prominent component of the latter is small non-coding RNAs, including microRNAs, that control the vast majority of these networks including genes regulating neural stemness, differentiation, apoptosis, projection fates, migration and many others. These cellular processes are also profoundly dependent on the microenvironment, stemness niche, hypoxic microenvironment, and interactions with associated cells including endothelial and immune cells. Significantly, the brain of all other mammalian organs expresses the highest number of microRNAs, with an additional gain in expression in the early stage of neurodegeneration and loss in expression in oncogenesis. However, a mechanistic explanation of the concept of an apparent inverse correlation between the odds of cancer and neurodegenerative diseases is only weakly developed. In this review, we thus will discuss widespread de-regulation of microRNAome observed in these two major groups of brain pathologies. The deciphering of these intricacies is of importance, as therapeutic restoration of pre-pathological microRNA landscape in neurodegeneration must not lead to oncogenesis and vice versa. We thus focus on microRNAs engaged in cellular processes that are inversely regulated in these diseases. We also aim to define the difference in microRNA networks between pro-survival and pro-apoptotic signaling in the brain.
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8
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Wang J, Wang A, He H, She X, He Y, Li S, Liu L, Luo T, Huang N, Luo H, Zou K. Trametenolic acid B protects against cerebral ischemia and reperfusion injury through modulation of microRNA-10a and PI3K/Akt/mTOR signaling pathways. Biomed Pharmacother 2019; 112:108692. [PMID: 30798122 DOI: 10.1016/j.biopha.2019.108692] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/09/2019] [Accepted: 02/14/2019] [Indexed: 12/13/2022] Open
Abstract
Trametenolic acid B (TAB) was a lanostane-type triterpenoid isolated from the trametes lactinea (Berk.) Pat. We have previously reported that extract from trametes lactinea (Berk.) Pat and TAB could efficiently improve learning and memory ability of the cerebral ischemia injury rats and suppress mitochondrial-mediated apoptosis in hydrogen peroxide damaged SH-SY5Y cells. However, the potential mechanisms have not been fully understood yet. The current study was to further investigate the protective effect of TAB on oxygen glucose deprivation/reoxygenation (OGD/R)-damaged SH-SY5Y cells and cerebral ischemia/reperfusion (I/R) injury rats, as well as its mechanisms involved. Cell experiments demonstrated that TAB (10, 20 and 40 μg/mL) protected OGD/R-induced SH-SY5Y cell injury by promoting cell proliferation and suppressing LDH leakage; Meanwhile, the results in vivo showed that TAB (20, 40 and 80 mg/kg) might significantly ameliorate the neurological deficit score, cerebral edema, neuronal cell loss and apoptosis, suppress cerebral infarction volume of the cerebral I/R injury rats. Further studies in vitro and in vivo indicated TAB could efficiently reduce OGD/R-damaged SH-SY5Y cell and cerebral I/R rat serum ROS, LDH and MDA levels, elevate SOD, GSH-Px and CAT activities, downregulate miR-10a mRNA and Bax, cytochrome C, cleaved-caspase-3 and cleaved-caspase-9 protein expressions, upregulate p-PIK3CA, p-Akt, p-mTOR, Bcl-2, pro-caspase-9 and pro-caspase-3 protein expressions and p-PIK3CA/PIK3CA, p-Akt/Akt, p-mTOR/mTOR ratios (P < 0.05 or P < 0.01, respectively). Our present study indicated that TAB possessed neuroprotective property against ODG/R and I/R injury by suppressing miR-10a expression, activating PI3K/Akt/mTOR signaling pathway, thereby reducing mitochondrial-mediated apoptosis, which provided a new insight for interpreting the underlying mechanisms of TAB' neuroprotective effect and a candidate agent to treat cerebral I/R injury.
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Affiliation(s)
- Junzhi Wang
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Ailing Wang
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Haibo He
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China.
| | - Xinxin She
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Yumin He
- Third-Level Laboratory of Pharmacology of Traditional Chinese Medicine of State Administration of Traditional Chinese Medicine, Medical College, China Three Gorges University, Yichang, China
| | - Shi Li
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Lanqing Liu
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Tao Luo
- Institute of Spleen and Stomach Diseases, Traditional Chinese Medicine Hospital of China Three Gorges University & Yichang Hospital of Traditional Chinese Medicine, Yichang, China
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Huajun Luo
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
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9
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Retraction: Extract of Spatholobus suberctus Dunn ameliorates ischemia-induced injury by targeting miR-494. PLoS One 2019; 14:e0212836. [PMID: 30785957 PMCID: PMC6382139 DOI: 10.1371/journal.pone.0212836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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10
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Ling Y, Li ZZ, Zhang JF, Zheng XW, Lei ZQ, Chen RY, Feng JH. RETRACTED: MicroRNA-494 inhibition alleviates acute lung injury through Nrf2 signaling pathway via NQO1 in sepsis-associated acute respiratory distress syndrome. Life Sci 2018; 210:1-8. [PMID: 30121199 PMCID: PMC9673760 DOI: 10.1016/j.lfs.2018.08.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/08/2018] [Accepted: 08/14/2018] [Indexed: 11/24/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. Concern was raised about the reliability of the Western blot results in Figures 5G,H+I, which appear to have a similar phenotype as many other publications, as detailed here: https://pubpeer.com/publications/7C9483B2551952AD53CCFCE206C4EB; and here: https://docs.google.com/spreadsheets/d/1r0MyIYpagBc58BRF9c3luWNlCX8VUvUuPyYYXzxWvgY/edit#gid=262337249. The journal requested that the corresponding author comment on these concerns and provide the raw data. The authors did not respond to this request and therefore the Editor-in-Chief decided to retract the article.
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Affiliation(s)
- Yun Ling
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China
| | - Zheng-Zhao Li
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China
| | - Jian-Feng Zhang
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China.
| | - Xiao-Wen Zheng
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China
| | - Zhuo-Qing Lei
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China
| | - Ru-Yan Chen
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China
| | - Ji-Hua Feng
- Department of Emergency, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, PR China
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11
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Neuroprotective Effects of Bioactive Compounds and MAPK Pathway Modulation in "Ischemia"-Stressed PC12 Pheochromocytoma Cells. Brain Sci 2018; 8:brainsci8020032. [PMID: 29419806 PMCID: PMC5836051 DOI: 10.3390/brainsci8020032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/24/2018] [Accepted: 02/02/2018] [Indexed: 02/08/2023] Open
Abstract
This review surveys the efforts taken to investigate in vitro neuroprotective features of synthetic compounds and cell-released growth factors on PC12 clonal cell line temporarily deprived of oxygen and glucose followed by reoxygenation (OGD/R). These cells have been used previously to mimic some of the properties of in vivo brain ischemia-reperfusion-injury (IRI) and have been instrumental in identifying common mechanisms such as calcium overload, redox potential, lipid peroxidation and MAPKs modulation. In addition, they were useful for establishing the role of certain membrane penetrable cocktails of antioxidants as well as potential growth factors which may act in neuroprotection. Pharmacological mechanisms of neuroprotection addressing modulation of the MAPK cascade and increased redox potential by natural products, drugs and growth factors secreted by stem cells, in either undifferentiated or nerve growth factor-differentiated PC12 cells exposed to ischemic conditions are discussed for future prospects in neuroprotection studies.
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