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El-Araby RE, Wasif K, Johnson R, Tu Q, Aboushousha T, Zhu ZX, Chen J. Establishment of a novel cellular model for Alzheimer's disease in vitro studies. Exp Neurol 2024; 378:114820. [PMID: 38789025 DOI: 10.1016/j.expneurol.2024.114820] [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: 11/27/2023] [Revised: 05/07/2024] [Accepted: 05/19/2024] [Indexed: 05/26/2024]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease characterized by memory loss, cognitive impairment, and behavioral and psychological symptoms of dementia. The limited efficacy of drugs for the treatment of neurodegenerative diseases reflects their complex etiology and pathogenesis. A novel in vitro model may help to bridge the gap between existing preclinical animal models and human clinical trials, thus identifying promising therapeutic targets that can be explored in upcoming clinical trials. By assisting in the identification of the mechanism of action and potential dangers, in vitro testing can also shorten the time and expense of translation. AIM As a result of these factors, our objective is to develop a powerful and informative cellular model of AD within a short period of time. Through triggering the MAPK and NF-κβ signaling pathways with the aid of small chemical compounds (PAF C-16 and BetA), respectively, in mouse microglial (SIM-A9) and neuroblast Neuro-2a (N2a) cell lines. RESULTS PAF C-16, initiated an activation effect at a concentration of 3.12 nM to 25 nM in the SIM-A9 and N2a cell lines after 72 h. BetA, activated the NF-κβ pathway with a concentration of 12.5 nM to 25 nM in the SIM-A9 and N2a cell lines after 72 h. The combination of the activator chemicals provided suitable activation for MEK1/2-ERK and NF-κβ in more than three subcultures. Activators significantly initiate APP and MAPT gene expression, as well as the expression of proteins APP, β. Amyloid, tau, and p-tau. The activation of the targeted pathways leads to significant morphological changes. CONCLUSION We can infer that the MEK1/2-ERK and NF-κβ pathways, respectively, are directly activated by the PAF C-16 and BetA chemicals. The activation of MEK1/2-ERK pathway results in the activation of the APP gene, which in turn activates the β. Amyloid protein, which in turn results in plaque. Furthermore, NF-κβ activation results in the activation of the MAPT gene, which leads to Tau and p-Tau protein activation, which ultimately results in tangles. This can be put into practice in just three days, with a high level of activity and stability that is passed down to the next three generations (subculture), with significant morphological changes. In microglial and neuroblast cell lines, we were successful in creating a novel AD-cell model.
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Affiliation(s)
- Rady E El-Araby
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA; Theodor Bilharz Research Institute, Ministry of scientific Research, Cairo, Egypt
| | - Komal Wasif
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA; Department of Human Physiology, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA 02215, USA
| | - Rebecca Johnson
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA; Department of Human Physiology, Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA 02215, USA
| | - Qisheng Tu
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | - Tarek Aboushousha
- Theodor Bilharz Research Institute, Ministry of scientific Research, Cairo, Egypt
| | - Zoe Xiaofang Zhu
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | - Jake Chen
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA; Department of Genetics, Molecular and Cell Biology, Tufts University School of Medicine, and Graduate School of Biomedical Sciences. 136 Harrison Ave, M&V 830, Boston, MA 02111, USA.
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Zhou Y, Wang Y, Wang Y, Chen L, Wang N, Su Y, Diwu Y, Zhang Q. LncRNA NKILA Exacerbates Alzheimer's Disease Progression by Regulating the FOXA1-Mediated Transcription of TNFAIP1. Neurochem Res 2023:10.1007/s11064-023-03944-6. [PMID: 37217807 DOI: 10.1007/s11064-023-03944-6] [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: 10/21/2022] [Revised: 04/03/2023] [Accepted: 04/20/2023] [Indexed: 05/24/2023]
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases in the world, which seriously affects AD patients' life quality. Recently, long non-coding RNAs (lncRNAs) have been reported to play a key role in AD pathogenesis, however, the specific mechanism remains unclear. Herein, we aimed to investigate the role of lncRNA NKILA in AD. The learning and memory performance of rats from streptozotocin (STZ)-treated or other treated groups were tested by Morris water maze test. Relative levels of genes and proteins were measured using RT-qPCR and Western blotting. Mitochondrial membrane potential was tested by JC-1 staining. Levels of ROS, SOD, MDA, GSH-Px, and LDH were measured using corresponding commercial kits. Apoptosis was evaluated by TUNEL staining or Flow cytometry assay. RNA Immunoprecipitation (RIP), RNA pulldown, Chromatin immunoprecipitation (ChIP), and dual-luciferase reporter assays were utilized to test the interaction between indicated molecules. STZ treatment caused learning and memory impairment in rats and oxidative stress damage in SH-SY5Y cells. LncRNA NKILA was found to be elevated in the hippocampal tissues of rats and SH-SY5Y cells after STZ exposure. Knockdown of lncRNA NKILA alleviated STZ-induced neuronal damage. Furthermore, lncRNA NKILA could bind to ELAVL1, which regulate the stability of FOXA1 mRNA. Moreover, TNFAIP1 transcription process was controlled by FOXA1, which targeted the promoter of TNFAIP1. In vivo results demonstrated that lncRNA NKILA accelerated STZ-induced neuronal damage and oxidative stress by FOXA1/TNFAIP1 axis. Our findings indicated that knockdown of lncRNA NKILA inhibited the neuronal damage and oxidative stress induced by STZ through the FOXA1/TNFAIP1 axis, thereby alleviating the development of AD, revealing a promising therapeutic axis for AD treatment.
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Affiliation(s)
- Yuan Zhou
- Department of Anatomy, Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
- Discipline Innovation Team of Shaanxi, University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
- Shaanxi Key Laboratory of Chinese Medicine Encephalopathy, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
- Shaanxi Key Laboratory of Research on TCM Physical Constitution and Diseases Prevention and Treatment, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
| | - Yujin Wang
- Department of TCM Diagnosis, Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
| | - Yalee Wang
- Discipline Innovation Team of Shaanxi, University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
- Affiliated Hospital of Shaanxi University of Chinese Medicine, No.2 Weiyang West Road, Xianyang, 712046, Shaanxi Province, People's Republic of China
| | - Lianji Chen
- Department of Anatomy, Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
| | - Nan Wang
- Department of Anatomy, Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China
| | - Yanjin Su
- Department of Endocrinology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China.
| | - Yongchang Diwu
- Discipline Innovation Team of Shaanxi, University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China.
- Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China.
| | - Qi Zhang
- Shaanxi Key Laboratory of Chinese Medicine Encephalopathy, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China.
- Shaanxi Key Laboratory of Research on TCM Physical Constitution and Diseases Prevention and Treatment, Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi Province, People's Republic of China.
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3
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Huang S, Zhang H, Chen W, Su N, Yuan C, Zhang J, Xiang S, Hu X. CRISPR/Cas9-Mediated Knockout of tnfaip1 in Zebrafish Plays a Role in Early Development. Genes (Basel) 2023; 14:genes14051005. [PMID: 37239365 DOI: 10.3390/genes14051005] [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: 03/09/2023] [Revised: 04/23/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
TNF α-induced protein 1 (TNFAIP1) was first identified in human umbilical vein endothelial cells and can be induced by tumor necrosis factor α (TNFα). Early studies have found that TNFAIP1 is involved in the development of many tumors and is closely associated with the neurological disorder Alzheimer's disease. However, little is known about the expression pattern of TNFAIP1 under physiological conditions and its function during embryonic development. In this study, we used zebrafish as a model to illustrate the early developmental expression pattern of tnfaip1 and its role in early development. First, we examined the expression pattern of tnfaip1 during early zebrafish development using quantitative real-time PCR and whole mount in situ hybridization and found that tnfaip1 was highly expressed in early embryonic development and, subsequently, expression became localized to anterior embryonic structures. To investigate the function of tnfaip1 during early development, we constructed a model of a stably inherited tnfaip1 mutant using the CRISPR/Cas9 system. Tnfaip1 mutant embryos showed significant developmental delays as well as microcephaly and microphthalmia. At the same time, we found decreased expression of the neuronal marker genes tuba1b, neurod1, and ccnd1 in tnfaip1 mutants. Analysis of transcriptome sequencing data revealed altered expression of the embryonic development related genes dhx40, hspa13, tnfrsf19, nppa, lrp2b, hspb9, clul1, zbtb47a, cryba1a, and adgrg4a in the tnfaip1 mutants. These findings suggest an important role for tnfaip1 in the early development of zebrafish.
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Affiliation(s)
- Shulan Huang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Hongning Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Wen Chen
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
- Key Laboratory of Vascular Biology and Translational Medicine, Medical School, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Na Su
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Changyue Yuan
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Jian Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Shuanglin Xiang
- Engineering Research Center for Antibodies from Experimental Animals of Hunan Province, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Xiang Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
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Xiong L, Zhang J, Shi H, Zhu G, Ji X, Li M, Zhu P, Luo K. Downregulation of TNFAIP1 alleviates OGD/R‑induced neuronal damage by suppressing Nrf2/GPX4‑mediated ferroptosis. Exp Ther Med 2022; 25:25. [PMID: 36561622 PMCID: PMC9748634 DOI: 10.3892/etm.2022.11724] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/25/2022] [Indexed: 11/24/2022] Open
Abstract
TNFα-induced protein 1 (TNFAIP1) serve a role in neurovascular disease. However, the potential role and molecular mechanism of TNFAIP1 in cerebral ischemia-reperfusion (I/R) remains elusive. In the present study, reverse transcription-quantitative PCR and western blotting were used to assess TNFAIP1 mRNA and protein expression levels in PC12 cells. Furthermore, using Cell Counting Kit-8, flow cytometry and western blotting, cell viability and apoptosis were evaluated. Oxidative stress was evaluated using DCFH-DA staining and ELISA was used for assessment of inflammatory factors. Expression of components in the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway and ferroptosis were assessed using western blotting analysis and an iron assay kit. TNFAIP1 expression was significantly upregulated in oxygen glucose deprivation and reperfusion (OGD/R)-injured PC12 cells. However, knocking down TNFAIP1 expression restored PC12 cell viability and decreased apoptosis following OGD/R-challenge. Furthermore, TNFAIP1 silencing significantly suppressed OGD/R-induced oxidative stress and inflammatory damage in PC12 cells. TNFAIP1 knockdown inhibited ferroptosis via activation of the Nrf2 signaling pathway in OGD/R-injured PC12 cells. Erastin treatment reversed the beneficial effects of TNFAIP1 knockdown on PC12 cell viability, apoptosis alleviation, oxidative stress and inflammation following OGD/R treatment. These results suggested that TNFAIP1 knockdown could alleviate OGD/R-induced neuronal cell damage by suppressing Nrf2-mediated ferroptosis, which might lay the foundation for the investigation of targeted-therapy for cerebral I/R injury in clinic.
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Affiliation(s)
- Lie Xiong
- Central Laboratory, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Jingruo Zhang
- Department of Acupuncture, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Hanqiang Shi
- Central Laboratory, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Gaofeng Zhu
- Department of Acupuncture, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Xiaoyan Ji
- Department of Acupuncture, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Mengjiao Li
- Department of Acupuncture, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Ping Zhu
- Department of Neurosurgery, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China
| | - Kaitao Luo
- Department of Acupuncture, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, Jiaxing, Zhejiang 314001, P.R. China,Correspondence to: Dr Kaitao Luo, Department of Acupuncture, Zhejiang Chinese Medical University-Affiliated Jiaxing Traditional Chinese Medicine Hospital, 1501 East Zhongshan Road, Jiaxing, Zhejiang 314001, P.R. China
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5
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Xu XX, Shi RX, Fu Y, Wang JL, Tong X, Zhang SQ, Wang N, Li MX, Tong Y, Wang W, He M, Liu BY, Chen GL, Guo F. Neuronal nitric oxide synthase/reactive oxygen species pathway is involved in apoptosis and pyroptosis in epilepsy. Neural Regen Res 2022; 18:1277-1285. [PMID: 36453412 PMCID: PMC9838157 DOI: 10.4103/1673-5374.357906] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Dysfunction of neuronal nitric oxide synthase contributes to neurotoxicity, which triggers cell death in various neuropathological diseases, including epilepsy. Studies have shown that inhibition of neuronal nitric oxide synthase activity increases the epilepsy threshold, that is, has an anticonvulsant effect. However, the exact role and potential mechanism of neuronal nitric oxide synthase in seizures are still unclear. In this study, we performed RNA sequencing, functional enrichment analysis, and weighted gene coexpression network analysis of the hippocampus of tremor rats, a rat model of genetic epilepsy. We found damaged hippocampal mitochondria and abnormal succinate dehydrogenase level and Na+-K+-ATPase activity. In addition, we used a pilocarpine-induced N2a cell model to mimic epileptic injury. After application of neuronal nitric oxide synthase inhibitor 7-nitroindazole, changes in malondialdehyde, lactate dehydrogenase and superoxide dismutase, which are associated with oxidative stress, were reversed, and the increase in reactive oxygen species level was reversed by 7-nitroindazole or reactive oxygen species inhibitor N-acetylcysteine. Application of 7-nitroindazole or N-acetylcysteine downregulated the expression of caspase-3 and cytochrome c and reversed the apoptosis of epileptic cells. Furthermore, 7-nitroindazole or N-acetylcysteine downregulated the abnormally high expression of NLRP3, gasdermin-D, interleukin-1β and interleukin-18. This indicated that 7-nitroindazole and N-acetylcysteine each reversed epileptic cell death. Taken together, our findings suggest that the neuronal nitric oxide synthase/reactive oxygen species pathway is involved in pyroptosis of epileptic cells, and inhibiting neuronal nitric oxide synthase activity or its induced oxidative stress may play a neuroprotective role in epilepsy.
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Affiliation(s)
- Xiao-Xue Xu
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China,Department of Neurology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Rui-Xue Shi
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Yu Fu
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Jia-Lu Wang
- Department of Neurology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xin Tong
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Shi-Qi Zhang
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Na Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan Province, China
| | - Mei-Xuan Li
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Yu Tong
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Wei Wang
- Department of Endocrinology and Metabolism, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Miao He
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China
| | - Bing-Yang Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China,Correspondence to: Feng Guo, ; Gui-Lan Chen, ; Bing-Yang Liu, .
| | - Gui-Lan Chen
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan Province, China,Correspondence to: Feng Guo, ; Gui-Lan Chen, ; Bing-Yang Liu, .
| | - Feng Guo
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Science, China Medical University, Shenyang, Liaoning Province, China,Correspondence to: Feng Guo, ; Gui-Lan Chen, ; Bing-Yang Liu, .
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Paik H, Lee J, Jeong CS, Park JS, Lee JH, Rappoport N, Kim Y, Sohn HY, Jo C, Kim J, Cho SB. Identification of a pleiotropic effect of ADIPOQ on cardiac dysfunction and Alzheimer's disease based on genetic evidence and health care records. Transl Psychiatry 2022; 12:389. [PMID: 36114174 PMCID: PMC9481623 DOI: 10.1038/s41398-022-02144-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 08/21/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022] Open
Abstract
Observations of comorbidity in heart diseases, including cardiac dysfunction (CD) are increasing, including and cognitive impairment, such as Alzheimer's disease and dementia (AD/D). This comorbidity might be due to a pleiotropic effect of genetic variants shared between CD and AD/D. Here, we validated comorbidity of CD and AD/D based on diagnostic records from millions of patients in Korea and the University of California, San Francisco Medical Center (odds ratio 11.5 [8.5-15.5, 95% Confidence Interval (CI)]). By integrating a comprehensive human disease-SNP association database (VARIMED, VARiants Informing MEDicine) and whole-exome sequencing of 50 brains from individuals with and without Alzheimer's disease (AD), we identified missense variants in coding regions including APOB, a known risk factor for CD and AD/D, which potentially have a pleiotropic role in both diseases. Of the identified variants, site-directed mutation of ADIPOQ (268 G > A; Gly90Ser) in neurons produced abnormal aggregation of tau proteins (p = 0.02), suggesting a functional impact for AD/D. The association of CD and ADIPOQ variants was confirmed based on domain deletion in cardiac cells. Using the UK Biobank including data from over 500000 individuals, we examined a pleiotropic effect of the ADIPOQ variant by comparing CD- and AD/D-associated phenotypic evidence, including cardiac hypertrophy and cognitive degeneration. These results indicate that convergence of health care records and genetic evidences may help to dissect the molecular underpinnings of heart disease and associated cognitive impairment, and could potentially serve a prognostic function. Validation of disease-disease associations through health care records and genomic evidence can determine whether health conditions share risk factors based on pleiotropy.
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Affiliation(s)
- Hyojung Paik
- Division of Supercomputing, Korea Institute of Science and Technology Information, Daejeon, 34141, Republic of Korea
- Bakar Computational Health Sciences Institute, University of California San Francisco, 550 16th Street, San Francisco, CA, 94143, USA
- Department of Pediatrics, School of Medicine, University of California San Francisco, 550 16th Street, San Francisco, CA, 94143, USA
- Department of Data and HPC Science, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Junehawk Lee
- Division of Supercomputing, Korea Institute of Science and Technology Information, Daejeon, 34141, Republic of Korea
| | - Chan-Seok Jeong
- Division of Supercomputing, Korea Institute of Science and Technology Information, Daejeon, 34141, Republic of Korea
| | - Jun Sung Park
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Jeong Ho Lee
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Nadav Rappoport
- Bakar Computational Health Sciences Institute, University of California San Francisco, 550 16th Street, San Francisco, CA, 94143, USA
- Departement of Software and Information Systems Engineering, Ben-Gurion University of the Negev, Beersheba, 8410501, Israel
| | - Younghoon Kim
- Division of Supercomputing, Korea Institute of Science and Technology Information, Daejeon, 34141, Republic of Korea
| | - Hee-Young Sohn
- Division of Brain Disease Research, Department for Chronic Disease Convergence Research, Korea National Institute of Health, Chungcheongbuk-do, 28159, Republic of Korea
| | - Chulman Jo
- Division of Brain Disease Research, Department for Chronic Disease Convergence Research, Korea National Institute of Health, Chungcheongbuk-do, 28159, Republic of Korea
| | - Jimin Kim
- Division of Supercomputing, Korea Institute of Science and Technology Information, Daejeon, 34141, Republic of Korea
| | - Seong Beom Cho
- Department of Bio-Medical Informatics, Gachon University, College of Medicine, Incheon, 21565, Republic of Korea.
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Fan M, Li Z, Hu M, Zhao H, Wang T, Jia Y, Yang R, Wang S, Song J, Liu Y, Jin W. Formononetin attenuates Aβ 25-35-induced adhesion molecules in HBMECs via Nrf2 activation. Brain Res Bull 2022; 183:162-171. [PMID: 35304289 DOI: 10.1016/j.brainresbull.2022.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/21/2022] [Accepted: 03/12/2022] [Indexed: 01/14/2023]
Abstract
Brain vascular inflammation plays a crucial role in the pathogenesis of Alzheimer's disease (AD). As a central pathogenic factor in AD, the extracellular buildup of amyloid-β (Aβ) induces brain microvascular endothelial cells activation, impairs endothelial structure and function. Formononetin (FMN) has been reported to protect against Alzheimer's disease (AD) and attenuates vascular inflammation in atherosclerosis. However, its involvement in regulating vascular inflammation of AD has not been investigated. In the study, we found that FMN significantly attenuates Aβ25-35-induced expression of adhesion molecules, including intracellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) in the human brain microvascular endothelial cells (HBMECs), suggesting that FMN inhibits Aβ25-35-induced brain endothelial cells inflammatory response. Moreover, we observed that FMN attenuates Aβ25-35-induced translocation of NFκB (p65) into the nucleus of HBMECs, and found that FMN treatment induces Nrf2 expression and attenuates Nrf2-Keap1 association in a dose-dependent manner in HBMECs. Furthermore, we demonstrated that Nrf2 silencing significantly attenuates FMN-reduced NFκB (p65) activation and nuclear translocation. Lastly, our results showed that FMN treatment attenuates Aβ25-35-induced adhesion of THP-1 cell to endothelial cell monolayer. Collectively, these findings suggest that FMN attenuates Aβ25-35-induced activation in human brain microvascular endothelial cells, which at least in part was mediated through Nrf2 pathways.
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Affiliation(s)
- Mingyue Fan
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Zhe Li
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Ming Hu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Haifeng Zhao
- Department of Anesthesiology, Shijiazhuang Obstetrics and Gynecology Hospital, The Fourth Hospital of Shijiazhuang, Shijiazhuang, Hebei, P.R. China
| | - Tianjun Wang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Yanqiu Jia
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Rui Yang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Shuo Wang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Jiaxi Song
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Yang Liu
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China
| | - Wei Jin
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, P.R. China.
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Li G, Liang R, Lian Y, Zhou Y. Circ_0002945 functions as a competing endogenous RNA to promote Aβ25-35-induced endoplasmic reticulum stress and apoptosis in SK-N-SH cells and human primary neurons. Brain Res 2022; 1785:147878. [DOI: 10.1016/j.brainres.2022.147878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 02/10/2022] [Accepted: 03/07/2022] [Indexed: 11/02/2022]
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9
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Wen L, Yang QH, Ma XL, Li T, Xiao S, Sun CF. Inhibition of TNFAIP1 ameliorates the oxidative stress and inflammatory injury in myocardial ischemia/reperfusion injury through modulation of Akt/GSK-3β/Nrf2 pathway. Int Immunopharmacol 2021; 99:107993. [PMID: 34330059 DOI: 10.1016/j.intimp.2021.107993] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 01/10/2023]
Abstract
Tumor necrosis factor α-induced protein 1 (TNFAIP1) has been documented as a vital regulator of apoptosis and oxidative stress under various pathological conditions. However, whether TNFAIP1 plays a role in myocardial ischemia/reperfusion (I/R) injury has not been well investigated. This work aimed to evaluate the possible role of TNFAIP1 in mediating myocardial I/R injury. Firstly, we demonstrated that TNFAIP1 expression was dramatically increased in rat cardiomyocytes following hypoxia/reoxygenation (H/R) in vitro, and in rat myocardial tissues following I/R treatment in vivo. Silencing of TNFAIP1 alleviated H/R-induced apoptosis, oxidative stress and inflammatory response in rat cardiomyocytes in vitro. Moreover, knockdown of TNFAIP1 ameliorated I/R-induced myocardial injury, infarction size, cardiac apoptosis, oxidative stress and inflammatory response in vivo. Further investigation elucidated that knockdown of TNFAIP1 enhanced the activation of nuclear factor erythroid 2-related factor 2 (Nrf2) signaling associated with modulation of the Akt/glycogen synthase kinase-3β (GSK-3β) pathway in vitro and in vivo. Inhibition of Akt markedly abrogated TNFAIP1-knockdown-mediated Nrf2 activation in cardiomyocytes following H/R injury. In addition, suppression of Nrf2 significantly diminished TNFAIP1-knockdown-induced cardioprotective effects in H/R-exposed cardiomyocytes. In summary, this work elucidates that inhibition of TNFAIP1 ameliorates myocardial I/R injury by potentiating Nrf2 signaling via the modulation of the Akt/GSK-3β pathway. Our study highlights a vital role of the TNFAIP1/Akt/GSK-3β/Nrf2 pathway in mediating myocardial I/R injury and suggests TNFAIP1 as an attractive target for treatment of this disease.
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Affiliation(s)
- Liang Wen
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China; Department of Cardiology, Hanzhong Central Hospital, Hanzhong, Shaanxi 723000, China
| | - Qing-Hui Yang
- Department of Cardiology, Shanghai East Hospital, Tongji University, Shanghai 200120, China
| | - Xiao-Lei Ma
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, Shaanxi 723000, China
| | - Ting Li
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, Shaanxi 723000, China
| | - Sa Xiao
- Department of Cardiology, Hanzhong Central Hospital, Hanzhong, Shaanxi 723000, China
| | - Chao-Feng Sun
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
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10
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The role of TNF-α induced protein 1 in the activation of pro-apoptotic proteins. Hum Cell 2021; 34:1123-1129. [PMID: 33909263 DOI: 10.1007/s13577-021-00529-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/06/2021] [Indexed: 10/21/2022]
Abstract
It is known that Porphyromonas gingivalis/lipopolysaccharide (P. gingivalis/LPS) induces inflammatory diseases via TNF-α-mediated transcription factors. Our recent data shows that TNFAIP1 (TNF-α induced protein 1) is related to TNF-α. However, little is known regarding how TNFAIP1 is involved in the TNF-α-dependent pathway. We therefore focused on the biological function of TNFAIP1 and examined how TNFAIP1 mediates TNF-α and other genes. We found that TNF-α was upregulated and peaks before the upregulation of apoptotic genes such as Bad, Bcl-x, Caspase 3, Catalase, Claspin, Cytochromic, Ho-1/HMOX1/HSP32, or MCI-1 in our time course with TNFAIP1-treated cells. Our findings here may serve as the foundation for future studies linking regulation of TNFAIP1 and intervention of inflammatory disease.
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11
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Liu Y, Sun H, Sun Y. LncRNA p21, downregulating miR-181b, aggravates neuropathic pain by upregulating Tnfaip1 and inhibit the AKT/CREB axis. Brain Res Bull 2021; 171:150-161. [PMID: 33774143 DOI: 10.1016/j.brainresbull.2021.03.005] [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: 10/28/2020] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 11/28/2022]
Abstract
Recently, there is evidence that long non-coding RNA p21 may play a regulatory role in the development of neuropathic pain (NPP), but it remains to be studied. In this study, we found that lncRNA p21 and tumor necrosis factor alpha-induced protein 1 (Tnfaip1) expression were up-regulated and miR-181b expression was down-regulated in lipopolysaccharide (LPS)-induced and activated BV-2 microglia. The results of flow cytometry and ELISA suggested that overexpression of lncRNA p21 or Tnfaip1 promoted apoptosis and inflammatory factors secretion, and miR-181b overexpression inhibited apoptosis and secretion of inflammatory factors. Luciferase reporter gene analysis validated the adsorption of miR-181b by lncRNA p21. In addition, the targeting relationship between miR-181b and Tnfaip1 was determined. Next, the up-regulation of lncRNA p21 and miR-181b was used as a reversal experiment, and the results suggested that the up-regulation of miR-181b attenuated the promoting effect of lncRNA p21 and Tnfaip1 on apoptosis and inflammatory response, which may be related to the activation of AKT/cAMP response element binding protein (CREB) axis. Finally, the rat model of SNL with lncRNA p21 knockdown was constructed, and the results of paw retraction mechanical threshold (PWMT) and paw retraction thermal latency (PWTL) measurements showed that knockdown of lncRNA p21 alleviated neuropathic pain in rats. In conclusion, our study found that the lncRNA p21/miR-181b/Tnfaip1 axis probably plays an important role in the progression of neuropathic pain, among which lncRNA p21 may become a new insight in the treatment of neuropathic pain.
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Affiliation(s)
- Yan Liu
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, Jilin, China
| | - Hai Sun
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, Jilin, China
| | - Yan Sun
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, Jilin, China.
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12
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Liu Y, Zhang W, Wang S, Cai L, Jiang Y, Pan Y, Liang Y, Xian J, Jia L, Li L, Zhao H, Zhang Y. Cullin3-TNFAIP1 E3 Ligase Controls Inflammatory Response in Hepatocellular Carcinoma Cells via Ubiquitination of RhoB. Front Cell Dev Biol 2021; 9:617134. [PMID: 33553178 PMCID: PMC7859282 DOI: 10.3389/fcell.2021.617134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022] Open
Abstract
Rho family GTPase RhoB is the critical signaling component controlling the inflammatory response elicited by pro-inflammatory cytokines. However, the underlying mechanisms of RhoB degradation in inflammatory response remain unclear. In this study, for the first time, we identified that TNFAIP1, an adaptor protein of Cullin3 E3 ubiquitin ligases, coordinated with Cullin3 to mediate RhoB degradation through ubiquitin proteasome system. In addition, we demonstrated that downregulation of TNFAIP1 induced the expression of pro-inflammatory cytokines IL-6 and IL-8 in TNFα-stimulated hepatocellular carcinoma cells through the activation of p38/JNK MAPK pathway via blocking RhoB degradation. Our findings revealed a novel mechanism of RhoB degradation and provided a potential strategy for anti-inflammatory intervention of tumors by targeting TNFAIP1-RhoB axis.
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Affiliation(s)
- Yue Liu
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China.,Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Research Center on Aging and Medicine, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Clinical Geriatric Medicine, Shanghai, China
| | - Wenjuan Zhang
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shiwen Wang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China.,Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Research Center on Aging and Medicine, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Clinical Geriatric Medicine, Shanghai, China
| | - Lili Cai
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yanyu Jiang
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yongfu Pan
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yupei Liang
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jingrong Xian
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China.,Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Research Center on Aging and Medicine, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Clinical Geriatric Medicine, Shanghai, China
| | - Lijun Jia
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lihui Li
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hu Zhao
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China.,Research Center on Aging and Medicine, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Clinical Geriatric Medicine, Shanghai, China
| | - Yanmei Zhang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China.,Research Center on Aging and Medicine, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Clinical Geriatric Medicine, Shanghai, China
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13
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Vasilopoulou C, Morris AP, Giannakopoulos G, Duguez S, Duddy W. What Can Machine Learning Approaches in Genomics Tell Us about the Molecular Basis of Amyotrophic Lateral Sclerosis? J Pers Med 2020; 10:E247. [PMID: 33256133 PMCID: PMC7712791 DOI: 10.3390/jpm10040247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Amyotrophic Lateral Sclerosis (ALS) is the most common late-onset motor neuron disorder, but our current knowledge of the molecular mechanisms and pathways underlying this disease remain elusive. This review (1) systematically identifies machine learning studies aimed at the understanding of the genetic architecture of ALS, (2) outlines the main challenges faced and compares the different approaches that have been used to confront them, and (3) compares the experimental designs and results produced by those approaches and describes their reproducibility in terms of biological results and the performances of the machine learning models. The majority of the collected studies incorporated prior knowledge of ALS into their feature selection approaches, and trained their machine learning models using genomic data combined with other types of mined knowledge including functional associations, protein-protein interactions, disease/tissue-specific information, epigenetic data, and known ALS phenotype-genotype associations. The importance of incorporating gene-gene interactions and cis-regulatory elements into the experimental design of future ALS machine learning studies is highlighted. Lastly, it is suggested that future advances in the genomic and machine learning fields will bring about a better understanding of ALS genetic architecture, and enable improved personalized approaches to this and other devastating and complex diseases.
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Affiliation(s)
- Christina Vasilopoulou
- Northern Ireland Centre for Stratified Medicine, Altnagelvin Hospital Campus, Ulster University, Londonderry BT47 6SB, UK; (C.V.); (S.D.)
| | - Andrew P. Morris
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK;
| | - George Giannakopoulos
- Institute of Informatics and Telecommunications, NCSR Demokritos, 153 10 Aghia Paraskevi, Greece;
- Science For You (SciFY) PNPC, TEPA Lefkippos-NCSR Demokritos, 27, Neapoleos, 153 41 Ag. Paraskevi, Greece
| | - Stephanie Duguez
- Northern Ireland Centre for Stratified Medicine, Altnagelvin Hospital Campus, Ulster University, Londonderry BT47 6SB, UK; (C.V.); (S.D.)
| | - William Duddy
- Northern Ireland Centre for Stratified Medicine, Altnagelvin Hospital Campus, Ulster University, Londonderry BT47 6SB, UK; (C.V.); (S.D.)
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14
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TNFAIP1 Is Upregulated in APP/PS1 Mice and Promotes Apoptosis in SH-SY5Y Cells by Binding to RhoB. J Mol Neurosci 2020; 71:1221-1233. [PMID: 33159672 DOI: 10.1007/s12031-020-01748-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/27/2020] [Indexed: 11/26/2022]
Abstract
Alzheimer's disease (AD) poses a significant threat to human life and health. The intraneuronal accumulation of β-amyloid (Aβ) plaques in the brains of AD patients results in neuronal cell death, which is a key factor that triggers multiple changes in the pathogenesis of AD. The inhibition of Aβ-induced neuronal cell death may potentially help in the intervention and treatment of AD. Our previous study reported that tumor necrosis factor α-induced protein 1 (TNFAIP1) is induced by and promotes Aβ25-35-induced neurotoxicity in mouse neuronal cells, but the roles and regulatory mechanisms of TNFAIP1 are still largely unknown. In this study, our experimental results show that TNFAIP1 and p-TNFAIP1 (phosphorylation of TNFAIP1 at Ser280) are overexpressed in the neurons of the cortex and hippocampus in the brains of APP/PS1 mice, and the transcription factor NF-κB is involved in the Aβ-induced upregulation of TNFAIP1. Moreover, our results suggest that TNFAIP1 contributes to the Aβ-induced reactive oxygen species (ROS) production, decreased mitochondrial membrane potential (∆Ψm), and neuronal cell death in human SH-SY5Y cells. We further revealed that Aβ increases the binding of TNFAIP1 to RhoB, and knockdown of RhoB attenuates the TNFAIP1-induced apoptosis of human SH-SY5Y cells. These data suggest that TNFAIP1 is closely associated with AD pathogenesis, and overexpression of TNFAIP1 in the neurons of the brains of AD patients plays a role in apoptosis, at least in part, via RhoB signaling.
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15
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Yousefian-Jazi A, Sung MK, Lee T, Hong YH, Choi JK, Choi J. Functional fine-mapping of noncoding risk variants in amyotrophic lateral sclerosis utilizing convolutional neural network. Sci Rep 2020; 10:12872. [PMID: 32732921 PMCID: PMC7393092 DOI: 10.1038/s41598-020-69790-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 07/13/2020] [Indexed: 02/06/2023] Open
Abstract
Recent large-scale genome-wide association studies have identified common genetic variations that may contribute to the risk of amyotrophic lateral sclerosis (ALS). However, pinpointing the risk variants in noncoding regions and underlying biological mechanisms remains a major challenge. Here, we constructed a convolutional neural network model with a large-scale GWAS meta-analysis dataset to unravel functional noncoding variants associated with ALS based on their epigenetic features. After filtering and prioritizing of candidates, we fine-mapped two new risk variants, rs2370964 and rs3093720, on chromosome 3 and 17, respectively. Further analysis revealed that these polymorphisms are associated with the expression level of CX3CR1 and TNFAIP1, and affect the transcription factor binding sites for CTCF, NFATc1 and NR3C1. Our results may provide new insights for ALS pathogenesis, and the proposed research methodology can be applied for other complex diseases as well.
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Affiliation(s)
- Ali Yousefian-Jazi
- Interdisciplinary Program, Bioengineering Major, Graduate School, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Min Kyung Sung
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
| | - Taeyeop Lee
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Yoon-Ho Hong
- Department of Neurology, Seoul Metropolitan Government Boramae Medical Center, Seoul National University College of Medicine, Neuroscience Research Institute, Seoul National University Medical Research Council, Seoul, Republic of Korea
| | - Jung Kyoon Choi
- Department of Bio and Brain Engineering, KAIST, Daejeon, 34141, Republic of Korea.
| | - Jinwook Choi
- Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul, 110-744, Republic of Korea.
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16
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Wang Y, Chang Q. MicroRNA miR-212 regulates PDCD4 to attenuate Aβ 25-35-induced neurotoxicity via PI3K/AKT signaling pathway in Alzheimer's disease. Biotechnol Lett 2020; 42:1789-1797. [PMID: 32474742 DOI: 10.1007/s10529-020-02915-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 05/15/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a progressive neurodegenerative disease in the elderly. MicroRNA (miRNA) miR-212-3p (miR-212) has been reported to dysregulated in many neurodegenerative diseases including AD. However, the mechanism and function of miR-212 in AD has not been reported. METHODS The levels of miR-212 and PDCD4 in AD patients and Aβ25-35-treated SH-SY5Y and IMR-32 cells were measured by qRT-PCR and/or Western blot. The putative target of miR-212 was predicted by DIANA tools online database and the interaction between miR-212 and PDCD4 was validated by dual luciferase reporter assay and RNA pull-down assay. The cell proliferation, cell apoptosis and the protein levels of Bcl-2, Bax, Cleaved caspase 3, p-PI3K, PI3K, p-ATK and ATK were measured by MTT assay, flow cytometry and Western blot. RESULTS The level of miR-212 was apparently down-regulated, and the level of PDCD4 was significantly up-regulated in plasma from AD patients and Aβ25-35-treated SH-SY5Y and IMR-32 cells. Following a dual luciferase reporter assay verified the direct interaction between miR-212 and PDCD4. The RNA pull-down assay further validated this interaction. The functional experiment indicated that PDCD4 mitigated the promotion effects on cell viability, the apoptosis-inhibited protein Bcl-2, the ratio of p-PI3K/PI3K, p-ATK/ATK and the suppressive effects on cell apoptosis and the corresponding protein levels of Bax, Cleaved caspase 3 caused by miR-212 mimics. CONCLUSION All the data in this study revealed that miR-212 modulated PDCD4 to regulate cell proliferation, apoptosis through PI3K/AKT signaling pathway in Aβ25-35-treated SH-SY5Y and IMR-32 cells, and this new regulatory network may provide a novel mechanism of AD.
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Affiliation(s)
- Yanjun Wang
- Department of Thoracic Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, 116021, China
| | - Qing Chang
- Department of Neurology, The Second Hospital of Dalian Medical University, No. 467 Zhongshan Rd, Shahekou District, Dalian, 116023, China.
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17
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Yi J, Zhu M, Qiu F, Zhou Y, Shu P, Liu N, Wei C, Xiang S. TNFAIP1 Mediates Formaldehyde-Induced Neurotoxicity by Inhibiting the Akt/CREB Pathway in N2a Cells. Neurotox Res 2020; 38:184-198. [PMID: 32335808 DOI: 10.1007/s12640-020-00199-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 03/20/2020] [Accepted: 03/31/2020] [Indexed: 02/07/2023]
Abstract
Formaldehyde (FA) is a common air pollutant. Exposure to exogenous FA can cause damage to the nervous system, such as learning and memory impairment, balance dysfunction, and sleep disorders. Excessive production of endogenous FA also causes memory impairment and is thought to be associated with Alzheimer's disease (AD). Tumor necrosis factor alpha-induced protein 1 (TNFAIP1) plays a crucial role in neurodevelopment and neurological diseases. However, the role of TNFAIP1 in FA-induced neurotoxicity is unclear. Herein, using a mouse neuroblastoma cell line (N2a cells), we explored the mechanism of TNFAIP1 in FA-induced neurotoxicity, the involvement of the Akt/CREB signaling pathway, and how the expression of TNFAIP1 is regulated by FA. We found that exposure to 100 μM or 200 μM FA for 24 h led to decreased cell viability, increased cell apoptosis and neurite retraction, increased reactive oxygen species (ROS) levels, upregulated protein expression of TNFAIP1 and decreased the levels of phosphorylated Akt and CREB in the Akt/CREB pathway. Knockdown of TNFAIP1 using a TNFAIP1 small interfering RNA (siRNA) expression vector prevented FA from inhibiting the Akt/CREB pathway, thus reducing cell apoptosis and restoring cell viability and neurite outgrowth. Clearance of ROS by vitamin E (Vit E) repressed the FA-mediated upregulation of TNFAIP1 expression. These results suggest that FA increases the expression of TNFAIP1 by inducing oxidative stress and that upregulated TNFAIP1 then inhibits the Akt/CREB pathway, consequently leading to cell apoptosis and neurite retraction. Therefore, TNFAIP1 is a potential target for alleviating FA-induced neurotoxicity and related neurological disorders.
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Affiliation(s)
- Junzhi Yi
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, China
| | - Min Zhu
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.,The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Feng Qiu
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.,The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yubo Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.,The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Pan Shu
- The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Ning Liu
- School of Medicine, Hunan Normal University, Changsha, 410013, Hunan, China
| | - Chenxi Wei
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China. .,The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
| | - Shuanglin Xiang
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China. .,The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
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18
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Qiu F, Zhou Y, Deng Y, Yi J, Gong M, Liu N, Wei C, Xiang S. Knockdown of TNFAIP1 prevents di-(2-ethylhexyl) phthalate-induced neurotoxicity by activating CREB pathway. CHEMOSPHERE 2020; 241:125114. [PMID: 31683445 DOI: 10.1016/j.chemosphere.2019.125114] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/10/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is a widely used plasticizer. It has neurotoxicity and exposure to it causes impairment of neurodevelopment, behavior and cognition. However, the molecular mechanisms responsible for the DEHP-induced neurotoxicity are not yet clearly defined. Tumor necrosis factor-induced protein 1 (TNFAIP1) was first discovered in umbilical vein endothelial cells and was further found to be important in the progress of Alzheimer's disease. Herein we explore the mechanism of TNFAIP1 in DEHP-induced neurotoxicity with the involvement of cyclic AMP response elements binding protein (CREB) signaling pathway in a mouse neuroblastoma cell line (N2a cells). We found that exposure to DEHP induced apoptosis and downregulated the expression of brain-derived neurotrophic factor (BDNF), synaptic proteins PSD 95 and synapsin-1 while upregulated the expression of TNFAIP1 and decreased the levels of phosphorylated Akt, CaMK Ⅳ, catalytic subunits of PKA and CREB in CREB signaling pathway. Knockdown of TNFAIP1 using TNFAIP1 small interfering RNA (siRNA) expression vector prevented DEHP from inhibiting CREB pathway, thus reduced apoptosis and restored expression of BDNF, PSD 95 and synapsin-1. Our data indicate that downregulation of TNFAIP1 prevents DEHP-induced neurotoxicity via activating CREB pathway. Therefore, TNFAIP1 is a potential target for relieving the DEHP-induced neurotoxicity and related neurological disorders.
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Affiliation(s)
- Feng Qiu
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yubo Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yeke Deng
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Junzhi Yi
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Mengting Gong
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Ning Liu
- School of Medicine, Hunan Normal University, Changsha, 410013, Hunan, China
| | - Chenxi Wei
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
| | - Shuanglin Xiang
- State Key Laboratory of Developmental Biology of Freshwater Fish, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China; The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, School of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
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19
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Xiao Y, Huang S, Qiu F, Ding X, Sun Y, Wei C, Hu X, Wei K, Long S, Xie L, Xun Y, Chen W, Zhang Z, Liu N, Xiang S. Tumor necrosis factor α-induced protein 1 as a novel tumor suppressor through selective downregulation of CSNK2B blocks nuclear factor-κB activation in hepatocellular carcinoma. EBioMedicine 2020; 51:102603. [PMID: 31901862 PMCID: PMC6950786 DOI: 10.1016/j.ebiom.2019.102603] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/10/2019] [Accepted: 12/10/2019] [Indexed: 12/15/2022] Open
Abstract
Background Tumor necrosis factor α-induced protein 1 (TNFAIP1) is frequently downregulated in cancer cell lines and promotes cancer cell apoptosis. However, its role, clinical significance and molecular mechanisms in hepatocellular carcinoma (HCC) are unknown. Methods The expression of TNFAIP1 in HCC tumor tissues and cell lines was measured by Western blot and immunohistochemistry. The effects of TNFAIP1 on HCC proliferation, apoptosis, metastasis, angiogenesis and tumor formation were evaluated by Cell Counting Kit-8 (CCK8), Terminal deoxynucleotidyl transferase dUTP Nick-End Labeling (TUNEL), transwell, tube formation assay in vitro and nude mice experiments in vivo. The interaction between TNFAIP1 and CSNK2B was validated by liquid chromatography-tandem mass spectrometry (LC-MS/MS), Co-immunoprecipitation and Western blot. The mechanism of how TNFAIP1 regulated nuclear factor-kappaB (NF-κB) pathway was analyzed by dual-luciferase reporter, immunofluorescence, quantitative Real-time polymerase chain reaction (RT-qPCR) and Western blot. Findings The TNFAIP1 expression is significantly decreased in HCC tissues and cell lines, and negatively correlated with the increased HCC histological grade. Overexpression of TNFAIP1 inhibits HCC cell proliferation, metastasis, angiogenesis and promotes cancer cell apoptosis both in vitro and in vivo, whereas the knockdown of TNFAIP1 in HCC cell displays opposite effects. Mechanistically, TNFAIP1 interacts with CSNK2B and promotes its ubiquitin-mediated degradation with Cul3, causing attenuation of CSNK2B-dependent NF-κB trans-activation in HCC cell. Moreover, the enforced expression of CSNK2B counteracts the inhibitory effects of TNFAIP1 on HCC cell proliferation, migration, and angiogenesis in vitro and in vivo. Interpretation Our results support that TNFAIP1 can act as a tumor suppressor of HCC by modulating TNFAIP1/CSNK2B/NF-κB pathway, implying that TNFAIP1 may represent a potential marker and a promising therapeutic target for HCC.
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Affiliation(s)
- Ye Xiao
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China; Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, 410008, China
| | - Shulan Huang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Feng Qiu
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Xiaofeng Ding
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Yi Sun
- Department of Pathology, Second Xiangya Hospital of Central South University, Changsha, 410011, China
| | - Chenxi Wei
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Xiang Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Ke Wei
- Medical school, Hunan University of Traditional Chinese Medicine, Changsha, 410208, China
| | - Shengwen Long
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Lina Xie
- Department of Stomatology, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Yu Xun
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Wen Chen
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Zhijian Zhang
- Department of Pathology, Xiangya Hospital of Central South University, Changsha, 410008, China
| | - Ning Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, 410013, China.
| | - Shuanglin Xiang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, 410081, China.
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Liu N, Yu Z, Xun Y, Shu P, Yue Y, Yuan S, Jiang Y, Huang Z, Yang X, Feng X, Xiang S, Wang X. Amyloid-β25-35 Upregulates Endogenous Neuroprotectant Neuroglobin via NFκB Activation in vitro. J Alzheimers Dis 2019; 64:1163-1174. [PMID: 30010125 DOI: 10.3233/jad-180163] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Neuroglobin (Ngb) has been reported to be increased in early and moderately advanced Alzheimer's disease (AD) stages but declined in the severe stage. However, its regulatory mechanisms and pathophysiological roles in the disease remain to be defined. In this study, we found that Ngb expression was significantly upregulated by low dose Aβ25-35, the neurotoxic fragment of Aβ1 - 40 and Aβ1 - 42, but was not further increased by a higher dose of Aβ25-35. Mutation analysis and supershift assay demonstrated that transcription factor Nuclear Factor κB (NFκB), κB2 and κB3 sites located in mouse Ngb promoter region were involved in dynamic regulation of Ngb expression in response to different doses of Aβ25-35 stimulation. In addition, we found that suppression of endogenous Ngb expression exacerbated Aβ25-35-induced neuronal cell death and mitochondrial dysfunction. Our results indicate that endogenous Ngb expression may be upregulated by low dose Aβ25-35, which is responsible for protecting against Aβ25-35-mediated neurotoxicity. These experimental findings suggest that upregulation of endogenous Ngb expression might be an effective intervention approach for AD.
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Affiliation(s)
- Ning Liu
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China.,Neuroprotection Research Laboratory, Departments of Neurology and Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Zhanyang Yu
- Neuroprotection Research Laboratory, Departments of Neurology and Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Yu Xun
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Pan Shu
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yiwei Yue
- School of Clinical Medicine, Zhengzhou University, Zhengzhou, China.,Neuroprotection Research Laboratory, Departments of Neurology and Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Shishan Yuan
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
| | - Yinghua Jiang
- Neuroprotection Research Laboratory, Departments of Neurology and Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Zixuan Huang
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
| | - Xiaoping Yang
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
| | - Xing Feng
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
| | - Shuanglin Xiang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Xiaoying Wang
- Neuroprotection Research Laboratory, Departments of Neurology and Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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21
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Sun GY, Yang HH, Guan XX, Zhong WJ, Liu YP, Du MY, Luo XQ, Zhou Y, Guan CX. Vasoactive intestinal peptide overexpression mediated by lentivirus attenuates lipopolysaccharide-induced acute lung injury in mice by inhibiting inflammation. Mol Immunol 2018; 97:8-15. [PMID: 29544087 DOI: 10.1016/j.molimm.2018.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/01/2018] [Accepted: 03/05/2018] [Indexed: 01/17/2023]
Abstract
Vasoactive intestinal peptide (VIP) is one of the most abundant neuropeptides in the lungs with various biological characters. We have reported that VIP inhibited the expressions of TREM-1 and IL-17A, which are involved in the initiation and amplification of inflammation in acute lung injury (ALI). However, the overall effect of VIP on ALI remains unknown. The aim of this study is to investigate the therapeutic effect of VIP mediated by lentivirus (Lenti-VIP) on lipopolysaccharide (LPS)-induced murine ALI. We found that the expression of intrapulmonary VIP peaked at day7 after the intratracheal injection of Lenti-VIP. Lenti-VIP increased the respiratory rate, lung compliance, and tidal volume, while decreased airway resistance in ALI mice, detected by Buxco system. Lenti-VIP significantly reduced inflammatory cell infiltration and maintained the integrity of the alveolar septa. Lenti-VIP also remarkably decreased the total protein level, the number of neutrophil and lactate dehydrogenase activity in the bronchoalveolar lavage fluid of LPS-induced ALI mice. In addition, Lenti-VIP down-regulated pro-inflammatory tumor necrosis factor (TNF)-α mRNA and protein expression, while up-regulated anti-inflammatory interleukin-10 mRNA and protein expression in lungs of ALI mice. Furthermore, we observed that VIP reduced the TNF-α expression in murine macrophages under LPS stimulation through protein kinase C and protein kinase A pathways. Together, our findings show that in vivo administration of lentivirus expressing VIP exerts a potent therapeutic effect on LPS-induced ALI in mice via inhibiting inflammation.
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Affiliation(s)
- Guo-Ying Sun
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China; School of Medicine, Hunan Normal University, Changsha, Hunan 410013, China
| | - Hui-Hui Yang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Xin-Xin Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Wen-Jing Zhong
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Yong-Ping Liu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Ming-Yuan Du
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Xiao-Qin Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
| | - Yong Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China.
| | - Cha-Xiang Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China.
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22
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Zhao Y, Li S, Xia N, Shi Y, Zhao CM. Effects of XIST/miR-137 axis on neuropathic pain by targeting TNFAIP1 in a rat model. J Cell Physiol 2017; 233:4307-4316. [PMID: 29115665 DOI: 10.1002/jcp.26254] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/29/2017] [Indexed: 12/31/2022]
Abstract
Non-coding RNAs have been reported to participate in the pathophysiology of neuropathic pain. The objective of our study was to investigate the biological role of XIST in neuropathic pain development. In our study, we identify and validate that lncRNA XIST was markedly increased and miR-137 was significantly decreased in chronic constriction injury (CCI) rats. XIST silencing alleviated pain behaviors including both mechanical and thermal hyperalgesia in the CCI rats. XIST was predicted to interact with miR-137 by bioinformatics technology and dual-luciferase reporter assays confirmed the correlation between XIST and miR-137. miR-137 was negatively modulated by XIST and upregulation of miR-137 greatly reduced neuropathic pain development in CCI rats. Moreover, we observed that tumor necrosis factor alpha-induced protein 1 (TNFAIP1) was enhanced in CCI rats and 3'-untranslated region (UTR) of TNFAIP1 was exhibited to be a target of miR-137 by bioinformatics prediction. TNFAIP1 can act as a crucial inflammation regulator by activating NF-kB activity. Overexpression of miR-137 significantly suppressed TNFAIP1 both in vitro and in vivo. Furthermore, upregulation of XIST reversed the inhibitory role of miR-137 in neuropathic pain development by inhibiting TNFAIP1. In conclusion, our current study indicates that XIST can positively regulate neuropathic pain in rats through regulating the expression of miR-137 and TNFAIP1. Our results imply that XIST/miR-137/TNFAIP1 axis may serve as a novel therapeutic target in neuropathic pain.
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Affiliation(s)
- Ying Zhao
- Department of Neurology, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, P.R. China
| | - Sen Li
- Department of Spinal Surgery, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, P.R. China
| | - Nin Xia
- Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Yan Shi
- Department of Emergency, Huai'an Second People's Hospital and The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, P.R. China
| | - Chang-Ming Zhao
- Department of Emergency, People's Hospital of Xuyi, Xuyi, Jiangsu, P.R. China
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23
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He D, Tan J, Zhang J. miR-137 attenuates Aβ-induced neurotoxicity through inactivation of NF-κB pathway by targeting TNFAIP1 in Neuro2a cells. Biochem Biophys Res Commun 2017; 490:941-947. [PMID: 28655611 DOI: 10.1016/j.bbrc.2017.06.144] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 06/23/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Accumulation of β-amyloid (Aβ) and neuroinflammation are implicated in the pathogenesis and development of Alzheimer's disease (AD). Neuron-enriched miR-137 was aberrantly downregulated and may be associated with the pathogenesis of AD. However, the detailed function of miR-137 in AD pathogenesis and the molecular mechanism have not been elucidated. METHODS The expressions of miR-137 and tumor necrosis factor alpha (TNFα)-induced protein 1 (TNFAIP1) at mRNA and protein levels in primary mouse cortical neurons and Neuro2a (N2a) cells exposed to different concentrations of Aβ25-35 were examined by qRT-PCR and western blot. Luciferase reporter assay was used to confirm the potential target of miR-137. MTT assay, flow cytometry analysis, caspase-3 activity assay, Enzyme-linked immunosorbent assay (ELISA), and western blot were used to detect cell viability, apoptosis, caspase-3 activity, Nuclear factor-kappa B (NF-κB) activity and level, respectively. RESULTS Aβ25-35 downregulated miR-137 and upregulated TNFAIP1 in primary mouse cortical neurons and N2a cells. In addition, miR-137 was found to directly target TNFAIP1 and suppress its mRNA and protein levels. Moreover, miR-137 restoration and TNFAIP1 knockdown facilitate Aβ25-35-induced cell toxicity, apoptosis, caspase-3 activity, and activated NF-κB in N2a cells, which was partially abolished by TNFAIP1 overexpression. CONCLUSION miR-137 attenuated Aβ-induced neurotoxicity through inactivation of NF-κB pathway by targeting TNFAIP1 in N2a cells, shedding light on the molecular mechanism of miR-137 underlying Aβ-induced neurotoxicity.
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Affiliation(s)
- Dan He
- Department of Neurology, The People's Hospital of Zhengzhou University, Zhengzhou, 450003, PR China; Department of Neurology, Sanbo Brain Hospital of Capital Medical University, Beijing, 100093, PR China
| | - Jun Tan
- Department of Neurology, The Third Affiliated Hospital of Xinxiang Medical College, Xinxiang, 453000, PR China
| | - Jiewen Zhang
- Department of Neurology, The People's Hospital of Zhengzhou University, Zhengzhou, 450003, PR China.
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