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Abdelmissih S, Abdelgwad M, Ali DME, Negm MSI, Eshra MA, Youssef A. High-dose Agomelatine Combined with Haloperidol Decanoate Improves Cognition, Downregulates MT2, Upregulates D5, and Maintains Krüppel-like Factor 9 But Alters Cardiac Electrophysiology. J Pharmacol Exp Ther 2024; 390:125-145. [PMID: 38816228 DOI: 10.1124/jpet.123.002087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 04/24/2024] [Accepted: 05/02/2024] [Indexed: 06/01/2024] Open
Abstract
Haloperidol decanoate (HD) has been implicated in cognitive impairment. Agomelatine (AGO) has been claimed to improve cognition. We aimed at investigating the effects of HD + low- or high-dose AGO on cognition, verifying the melatonergic/dopaminergic to the cholinergic hypothesis of cognition and exploring relevant cardiovascular issues in adult male Wistar albino rats. HD + high-dose AGO prolonged the step-through latency by +61.47% (P < 0.0001), increased the time spent in bright light by +439.49% (P < 0.0001), reduced the time spent in dim light by -66.25% (P < 0.0001), and increased the percent of alternations by +71.25% (P < 0.0001), despite the reductions in brain acetylcholine level by -10.67% (P < 0.0001). Neurodegeneration was minimal, while the mean power frequency of the source wave was reduced by -23.39% (P < 0.05). Concurrently, the relative expression of brain melatonin type 2 receptors was reduced by -18.75% (P < 0.05), against increased expressions of dopamine type 5 receptors by +22.22% (P < 0.0001) and angiopoietin-like 4 by +119.18% (P < 0.0001). Meanwhile, electrocardiogram (ECG) demonstrated inverted P wave, reduced P wave duration by -36.15% (P < 0.0001) and PR interval by -19.91% (P < 0.0001), prolonged RR interval by +27.97% (P < 0.05), increased R wave amplitude by +523.15% (P < 0.0001), and a depressed ST segment and inverted T wave. In rats administered AGO, HD, or HD+ low-dose AGO, Alzheimer's disease (AD)-like neuropathologic features were more evident, accompanied by extensive ECG and neurochemical alterations. HD + high-dose AGO enhances cognition but alters cardiac electrophysiology. SIGNIFICANCE STATEMENT: Given the issue of cognitive impairment associated with HD and the claimed cognitive-enhancing activity of AGO, combined high-dose AGO with HD improved cognition of adult male rats, who exhibited minimal neurodegenerative changes. HD+ high-dose AGO was relatively safe regarding triggering epileptogenesis, while it altered cardiac electrophysiology. In the presence of low acetylcholine, the melatonergic/dopaminergic hypothesis, added to angiopoietin-like 4 and Krüppel-like factor 9, could offer some clue, thus offering novel targets for pharmacologic manipulation of cognition.
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Affiliation(s)
- Sherine Abdelmissih
- Departments of Medical Pharmacology (S.A., A.Y.), Medical Biochemistry and Molecular Biology (M.A.), Pathology (M.S.I.N.), and Medical Physiology (M.A.E.), Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt; and Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Sohag University, Sohag, Egypt (D.M.E.A.)
| | - Marwa Abdelgwad
- Departments of Medical Pharmacology (S.A., A.Y.), Medical Biochemistry and Molecular Biology (M.A.), Pathology (M.S.I.N.), and Medical Physiology (M.A.E.), Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt; and Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Sohag University, Sohag, Egypt (D.M.E.A.)
| | - Doaa Mohamed Elroby Ali
- Departments of Medical Pharmacology (S.A., A.Y.), Medical Biochemistry and Molecular Biology (M.A.), Pathology (M.S.I.N.), and Medical Physiology (M.A.E.), Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt; and Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Sohag University, Sohag, Egypt (D.M.E.A.)
| | - Mohamed Sharif Ismail Negm
- Departments of Medical Pharmacology (S.A., A.Y.), Medical Biochemistry and Molecular Biology (M.A.), Pathology (M.S.I.N.), and Medical Physiology (M.A.E.), Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt; and Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Sohag University, Sohag, Egypt (D.M.E.A.)
| | - Mohamed Ali Eshra
- Departments of Medical Pharmacology (S.A., A.Y.), Medical Biochemistry and Molecular Biology (M.A.), Pathology (M.S.I.N.), and Medical Physiology (M.A.E.), Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt; and Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Sohag University, Sohag, Egypt (D.M.E.A.)
| | - Amal Youssef
- Departments of Medical Pharmacology (S.A., A.Y.), Medical Biochemistry and Molecular Biology (M.A.), Pathology (M.S.I.N.), and Medical Physiology (M.A.E.), Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt; and Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Sohag University, Sohag, Egypt (D.M.E.A.)
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Gong Y, Haeri M, Zhang X, Li Y, Liu A, Wu D, Zhang Q, Jazwinski SM, Zhou X, Wang X, Jiang L, Chen YP, Yan X, Swerdlow RH, Shen H, Deng HW. Spatial Dissection of the Distinct Cellular Responses to Normal Aging and Alzheimer's Disease in Human Prefrontal Cortex at Single-Nucleus Resolution. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.05.21.24306783. [PMID: 38826275 PMCID: PMC11142279 DOI: 10.1101/2024.05.21.24306783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Aging significantly elevates the risk for Alzheimer's disease (AD), contributing to the accumulation of AD pathologies, such as amyloid-β (Aβ), inflammation, and oxidative stress. The human prefrontal cortex (PFC) is highly vulnerable to the impacts of both aging and AD. Unveiling and understanding the molecular alterations in PFC associated with normal aging (NA) and AD is essential for elucidating the mechanisms of AD progression and developing novel therapeutics for this devastating disease. In this study, for the first time, we employed a cutting-edge spatial transcriptome platform, STOmics® SpaTial Enhanced Resolution Omics-sequencing (Stereo-seq), to generate the first comprehensive, subcellular resolution spatial transcriptome atlas of the human PFC from six AD cases at various neuropathological stages and six age, sex, and ethnicity matched controls. Our analyses revealed distinct transcriptional alterations across six neocortex layers, highlighted the AD-associated disruptions in laminar architecture, and identified changes in layer-to-layer interactions as AD progresses. Further, throughout the progression from NA to various stages of AD, we discovered specific genes that were significantly upregulated in neurons experiencing high stress and in nearby non-neuronal cells, compared to cells distant from the source of stress. Notably, the cell-cell interactions between the neurons under the high stress and adjacent glial cells that promote Aβ clearance and neuroprotection were diminished in AD in response to stressors compared to NA. Through cell-type specific gene co-expression analysis, we identified three modules in excitatory and inhibitory neurons associated with neuronal protection, protein dephosphorylation, and negative regulation of Aβ plaque formation. These modules negatively correlated with AD progression, indicating a reduced capacity for toxic substance clearance in AD subject samples. Moreover, we have discovered a novel transcription factor, ZNF460, that regulates all three modules, establishing it as a potential new therapeutic target for AD. Overall, utilizing the latest spatial transcriptome platform, our study developed the first transcriptome-wide atlas with subcellular resolution for assessing the molecular alterations in the human PFC due to AD. This atlas sheds light on the potential mechanisms underlying the progression from NA to AD.
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Affiliation(s)
- Yun Gong
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Mohammad Haeri
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, MO, 66160, USA
| | - Xiao Zhang
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Yisu Li
- Department of Cell and Molecular Biology, School of Science of Engineering, Tulane University, New Orleans, LA, 70118, USA
| | - Anqi Liu
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Di Wu
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Qilei Zhang
- School of Basic Medical Sciences, Central South University, Changsha, Hunan, 410008, China
| | - S. Michal Jazwinski
- Tulane Center for Aging, Deming Department of Medicine, Tulane University School of Medicne, New Orleans, LA 70112, USA
| | - Xiang Zhou
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xiaoying Wang
- Clinical Neuroscience Research Center, Departments of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Lindong Jiang
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Yi-Ping Chen
- Department of Cell and Molecular Biology, School of Science of Engineering, Tulane University, New Orleans, LA, 70118, USA
| | - Xiaoxin Yan
- School of Basic Medical Sciences, Central South University, Changsha, Hunan, 410008, China
| | - Russell H. Swerdlow
- Department of Neurology, University of Kansas Medical Center, Kansas City, MO, 66160, USA
| | - Hui Shen
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
| | - Hong-Wen Deng
- Tulane Center for Biomedical Informatics and Genomics, Deming Department of Medicine, School of Medicine, Tulane University, New Orleans, LA, 70112, USA
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Yuce K, Ozkan AI. The kruppel-like factor (KLF) family, diseases, and physiological events. Gene 2024; 895:148027. [PMID: 38000704 DOI: 10.1016/j.gene.2023.148027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 11/06/2023] [Accepted: 11/21/2023] [Indexed: 11/26/2023]
Abstract
The Kruppel-Like Factor family of regulatory proteins, which has 18 members, is transcription factors. This family contains zinc finger proteins, regulates the activation and suppression of transcription, and binds to DNA, RNA, and proteins. Klfs related to the immune system are Klf1, Klf2, Klf3, Klf4, Klf6, and Klf14. Klfs related to adipose tissue development and/or glucose metabolism are Klf3, Klf7, Klf9, Klf10, Klf11, Klf14, Klf15, and Klf16. Klfs related to cancer are Klf3, Klf4, Klf5, Klf6, Klf7, Klf8, Klf9, Klf10, Klf11, Klf12, Klf13, Klf14, Klf16, and Klf17. Klfs related to the cardiovascular system are Klf4, Klf5, Klf10, Klf13, Klf14, and Klf15. Klfs related to the nervous system are Klf4, Klf7, Klf8, and Klf9. Klfs are associated with diseases such as carcinogenesis, oxidative stress, diabetes, liver fibrosis, thalassemia, and the metabolic syndrome. The aim of this review is to provide information about the relationship of Klfs with some diseases and physiological events and to guide future studies.
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Affiliation(s)
- Kemal Yuce
- Selcuk University, Medicine Faculty, Department of Basic Medical Sciences, Physiology, Konya, Turkiye.
| | - Ahmet Ismail Ozkan
- Artvin Coruh University, Medicinal-Aromatic Plants Application and Research Center, Artvin, Turkiye.
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Zhao H, Wang J, Li Z, Wang S, Yu G, Wang L. Identification ferroptosis-related hub genes and diagnostic model in Alzheimer's disease. Front Mol Neurosci 2023; 16:1280639. [PMID: 37965040 PMCID: PMC10642492 DOI: 10.3389/fnmol.2023.1280639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/13/2023] [Indexed: 11/16/2023] Open
Abstract
Background Ferroptosis is a newly defined form of programmed cell death and plays an important role in Alzheimer's disease (AD) pathology. This study aimed to integrate bioinformatics techniques to explore biomarkers to support the correlation between ferroptosis and AD. In addition, further investigation of ferroptosis-related biomarkers was conducted on the transcriptome characteristics in the asymptomatic AD (AsymAD). Methods The microarray datasets GSE118553, GSE132903, GSE33000, and GSE157239 on AD were downloaded from the GEO database. The list of ferroptosis-related genes was extracted from the FerrDb website. Differentially expressed genes (DEGs) were identified by R "limma" package and used to screen ferroptosis-related hub genes. The random forest algorithm was used to construct the diagnostic model through hub genes. The immune cell infiltration was also analyzed by CIBERSORTx. The miRNet and DGIdb database were used to identify microRNAs (miRNAs) and drugs which targeting hub genes. Results We identified 18 ferroptosis-related hub genes anomalously expressed in AD, and consistent expression trends had been observed in both AsymAD The random forest diagnosis model had good prediction results in both training set (AUC = 0.824) and validation set (AUC = 0.734). Immune cell infiltration was analyzed and the results showed that CD4+ T cells resting memory, macrophages M2 and neutrophils were significantly higher in AD. A significant correlation of hub genes with immune infiltration was observed, such as DDIT4 showed strong positive correlation with CD4+ T cells memory resting and AKR1C2 had positive correlation with Macrophages M2. Additionally, the microRNAs (miRNAs) and drugs which targeting hub genes were screened. Conclusion These results suggest that ferroptosis-related hub genes we screened played a part in the pathological progression of AD. We explored the potential of these genes as diagnostic markers and their relevance to immune cells which will help in understanding the development of AD. Targeting miRNAs and drugs provides new research clues for preventing the development of AD.
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Affiliation(s)
| | | | | | | | - Guoying Yu
- State Key Laboratory of Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Sciences, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
| | - Lan Wang
- State Key Laboratory of Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Sciences, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
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Celis K, Moreno MDMM, Rajabli F, Whitehead P, Hamilton-Nelson K, Dykxhoorn DM, Nuytemans K, Wang L, Flanagan M, Weintraub S, Geula C, Gearing M, Dalgard CL, Jin F, Bennett DA, Schuck T, Pericak-Vance MA, Griswold AJ, Young JI, Vance JM. Ancestry-related differences in chromatin accessibility and gene expression of APOE ε4 are associated with Alzheimer's disease risk. Alzheimers Dement 2023; 19:3902-3915. [PMID: 37037656 PMCID: PMC10529851 DOI: 10.1002/alz.13075] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 04/12/2023]
Abstract
INTRODUCTION European local ancestry (ELA) surrounding apolipoprotein E (APOE) ε4 confers higher risk for Alzheimer's disease (AD) compared to African local ancestry (ALA). We demonstrated significantly higher APOE ε4 expression in ELA versus ALA in AD brains from APOE ε4/ε4 carriers. Chromatin accessibility differences could contribute to these expression changes. METHODS We performed single nuclei assays for transposase accessible chromatin sequencing from the frontal cortex of six ALA and six ELA AD brains, homozygous for local ancestry and APOE ε4. RESULTS Our results showed an increased chromatin accessibility at the APOE ε4 promoter area in ELA versus ALA astrocytes. This increased accessibility in ELA astrocytes extended genome wide. Genes with increased accessibility in ELA in astrocytes were enriched for synapsis, cholesterol processing, and astrocyte reactivity. DISCUSSION Our results suggest that increased chromatin accessibility of APOE ε4 in ELA astrocytes contributes to the observed elevated APOE ε4 expression, corresponding to the increased AD risk in ELA versus ALA APOE ε4/ε4 carriers.
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Affiliation(s)
- Katrina Celis
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
| | - Maria DM. Muniz Moreno
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
| | - Farid Rajabli
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
| | - Patrice Whitehead
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
| | - Kara Hamilton-Nelson
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
| | - Derek M. Dykxhoorn
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
| | - Karen Nuytemans
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
| | - Liyong Wang
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
| | - Margaret Flanagan
- Northwestern ADC Neuropathology Core, Northwestern University Feinberg School of Medicine, Chicago, IL, USA, 60611
| | - Sandra Weintraub
- Northwestern ADC Neuropathology Core, Northwestern University Feinberg School of Medicine, Chicago, IL, USA, 60611
| | - Changiz Geula
- Northwestern ADC Neuropathology Core, Northwestern University Feinberg School of Medicine, Chicago, IL, USA, 60611
| | - Marla Gearing
- Goizueta Alzheimer’s Disease Research Center, Emory University, Atlanta, GA, USA, 15213
| | - Clifton L. Dalgard
- The American Genome Center, Uniformed Services University, Bethesda, MD, USA, 20814
- Collaborative Health Initiative Research Program, Henry Jackson Foundation, Bethesda, MD, USA, 20817
- Department of Anatomy Physiology & Genetics, Uniformed Services University, Bethesda, MD, USA, 20814
| | - Fulai Jin
- Cleveland Institute for Computational Biology, Case Western Reserve University, Cleveland, Ohio, USA, 44106
| | - David A. Bennett
- Department of Neurological Sciences, Rush University, Chicago, IL, USA, 60612
| | - Theresa Schuck
- The Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,19104
| | - Margaret A. Pericak-Vance
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
| | - Anthony J. Griswold
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
| | - Juan I. Young
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA, 33136
- Dr. John T Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA, 33136
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Andjelkovic AV, Situ M, Citalan-Madrid AF, Stamatovic SM, Xiang J, Keep RF. Blood-Brain Barrier Dysfunction in Normal Aging and Neurodegeneration: Mechanisms, Impact, and Treatments. Stroke 2023; 54:661-672. [PMID: 36848419 PMCID: PMC9993074 DOI: 10.1161/strokeaha.122.040578] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Cerebral endothelial cells and their linking tight junctions form a unique, dynamic and multi-functional interface, the blood-brain barrier (BBB). The endothelium is regulated by perivascular cells and components forming the neurovascular unit. This review examines BBB and neurovascular unit changes in normal aging and in neurodegenerative disorders, particularly focusing on Alzheimer disease, cerebral amyloid angiopathy and vascular dementia. Increasing evidence indicates BBB dysfunction contributes to neurodegeneration. Mechanisms underlying BBB dysfunction are outlined (endothelium and neurovascular unit mediated) as is the BBB as a therapeutic target including increasing the uptake of systemically delivered therapeutics across the BBB, enhancing clearance of potential neurotoxic compounds via the BBB, and preventing BBB dysfunction. Finally, a need for novel biomarkers of BBB dysfunction is addressed.
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Affiliation(s)
- Anuska V. Andjelkovic
- Department of Pathology, University of Michigan Medical School, Ann Arbor MI, USA
- Department of Neurosurgery, University of Michigan Medical School, Ann Arbor MI, USA
| | - Muyu Situ
- Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor MI, USA
| | | | | | - Jianming Xiang
- Department of Neurosurgery, University of Michigan Medical School, Ann Arbor MI, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan Medical School, Ann Arbor MI, USA
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor MI, USA
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Kennedy CL, Price EM, Mifsud KR, Salatino S, Sharma E, Engledow S, Broxholme J, Goss HM, Reul JM. Genomic regulation of Krüppel-like-factor family members by corticosteroid receptors in the rat brain. Neurobiol Stress 2023; 23:100532. [PMID: 36942087 PMCID: PMC10024234 DOI: 10.1016/j.ynstr.2023.100532] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/09/2023] Open
Abstract
Hippocampal mineralocorticoid receptors (MRs) and glucocorticoid receptors (GRs) mediate glucocorticoid hormone (GC) action in the hippocampus. These receptors bind to glucocorticoid responsive elements (GREs) within target genes, eliciting transcriptional effects in response to stress and circadian variation. Until recently, little was known about the genome-wide targets of hippocampal MRs and GRs under physiological conditions. Following on from our genome-wide MR and GR ChIP-seq and Ribo-Zero RNA-seq studies on rat hippocampus, we investigated the Krüppel-like factors (KLFs) as targets of MRs and GRs throughout the brain under circadian variation and after acute stress. In particular, Klf2, Klf9 and Klf15 are known to be stress and/or GC responsive and play a role in neurobiological processes including synaptic plasticity and neuronal differentiation. We found increased binding of MR and GR to GREs within Klf2, Klf9 and Klf15 in the hippocampus, amygdala, prefrontal cortex, and neocortex after acute stress and resulting from circadian variation, which was accompanied by upregulation of corresponding hnRNA and mRNA levels. Adrenalectomy abolished transcriptional upregulation of specific Klf genes. These results show that MRs and GRs regulate Klf gene expression throughout the brain following exposure to acute stress or in response to circadian variation, likely alongside other transcription factors.
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Affiliation(s)
- Clare L.M. Kennedy
- Neuro-Epigenetics Research Group, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, United Kingdom
| | - Emily M. Price
- Neuro-Epigenetics Research Group, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, United Kingdom
| | - Karen R. Mifsud
- Neuro-Epigenetics Research Group, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, United Kingdom
| | - Silvia Salatino
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - Eshita Sharma
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - Simon Engledow
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - John Broxholme
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - Hannah M. Goss
- Neuro-Epigenetics Research Group, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, United Kingdom
| | - Johannes M.H.M. Reul
- Neuro-Epigenetics Research Group, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, United Kingdom
- Corresponding author.
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Mechanism of acteoside-activated let-7g-5P attenuating Aβ-induced increased permeability and apoptosis of brain microvascular endothelial cells based on experimental and network pharmacology. Neuroreport 2022; 33:714-722. [PMID: 36165002 DOI: 10.1097/wnr.0000000000001837] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVES Amyloid β-protein (Aβ)-induced apoptosis and oxidative stress of human brain microvascular endothelial cells(BMECs) are contributors to the development of Alzheimer's disease (AD). Acteoside has shown its therapeutic potential for AD treatment. Therefore, this study investigated the effect of acteoside on Aβ-induced blood-brain barrier damage, oxidative stress and apoptosis as well as to explore the underlying mechanisms through network pharmacology. METHODS The study used Aβ to induce human BMECs to construct an in-vitro injury model. Following treatment with acteoside, transendothelial electrical resistance (TEER), RT-qPCR and Western blot were used to evaluate the permeability of BMECs. The apoptosis level was detected by TUNEL and Western blot, ROS assay kit was used for the detection of reactive oxygen species (ROS) expression. The let-7g-5p expression level was detected by RT-qPCR. After additional treatment with let-7g-5p inhibitor, corresponding assays were performed again. Finally, network pharmacology was used to verify the mechanism. RESULTS Acteoside decreased the permeability, oxidative stress and cell apoptosis of Aβ-stimulated cells. More importantly, acteoside-activated let-7g-5p and additional treatment with let-7g-5p inhibitor abated the effects of acteoside on Aβ-induced permeability, oxidative stress and apoptosis of Aβ-stimulated BMECs. According to network pharmacology, 233 targeted genes of acteoside and 122 potential targets of let-7g-5p were determined by screening several databases, and two targets called Casp-3 and ITGB3 were obtained after taking the intersection. CONCLUSION In conclusion, these results reveal that acteoside-activated let-7g-5p attenuating Aβ-induced increased permeability and apoptosis of human BMECs.
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Rytkönen KT, Faux T, Mahmoudian M, Heinosalo T, Nnamani MC, Perheentupa A, Poutanen M, Elo LL, Wagner GP. Histone H3K4me3 breadth in hypoxia reveals endometrial core functions and stress adaptation linked to endometriosis. iScience 2022; 25:104235. [PMID: 35494227 PMCID: PMC9051620 DOI: 10.1016/j.isci.2022.104235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/11/2022] [Accepted: 04/07/2022] [Indexed: 11/21/2022] Open
Abstract
Trimethylation of histone H3 at lysine 4 (H3K4me3) is a marker of active promoters. Broad H3K4me3 promoter domains have been associated with cell type identity, but H3K4me3 dynamics upon cellular stress have not been well characterized. We assessed this by exposing endometrial stromal cells to hypoxia, which is a major cellular stress condition. We observed that hypoxia modifies the existing H3K4me3 marks and that promoter H3K4me3 breadth rather than height correlates with transcription. Broad H3K4me3 domains mark genes for endometrial core functions and are maintained or selectively extended upon hypoxia. Hypoxic extension of H3K4me3 breadth associates with stress adaptation genes relevant for the survival of endometrial cells including transcription factor KLF4, for which we found increased protein expression in the stroma of endometriosis lesions. These results substantiate the view on broad H3K4me3 as a marker of cell identity genes and reveal participation of H3K4me3 extension in cellular stress adaptation.
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Affiliation(s)
- Kalle T. Rytkönen
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
- Yale Systems Biology Institute, West Haven, CT 06516, USA
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, Kiinamyllynkatu 10, 20014 Turku, Finland
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA
- Corresponding author
| | - Thomas Faux
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
| | - Mehrad Mahmoudian
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, Kiinamyllynkatu 10, 20014 Turku, Finland
| | - Taija Heinosalo
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, Kiinamyllynkatu 10, 20014 Turku, Finland
| | - Mauris C. Nnamani
- Yale Systems Biology Institute, West Haven, CT 06516, USA
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA
| | - Antti Perheentupa
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, Kiinamyllynkatu 10, 20014 Turku, Finland
- Department of Obstetrics and Gynecology, Turku University Hospital, Kiinamyllynkatu 4-8, 20521 Turku, Finland
| | - Matti Poutanen
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, Kiinamyllynkatu 10, 20014 Turku, Finland
| | - Laura L. Elo
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
- Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, 20014 Turku, Finland
| | - Günter P. Wagner
- Yale Systems Biology Institute, West Haven, CT 06516, USA
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale Medical School, New Haven, CT 06510, USA
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI 48201, USA
- Corresponding author
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10
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Renoprotective Effect of KLF2 on Glomerular Endothelial Dysfunction in Hypertensive Nephropathy. Cells 2022; 11:cells11050762. [PMID: 35269384 PMCID: PMC8909753 DOI: 10.3390/cells11050762] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/18/2022] [Accepted: 02/18/2022] [Indexed: 11/17/2022] Open
Abstract
Kruppel-like factor 2 (KLF2) regulates endothelial cell metabolism; endothelial dysfunction is associated with hypertension and is a predictor of atherosclerosis development and cardiovascular events. Here, we investigated the role of KLF2 in hypertensive nephropathy by regulating KLF2 expression in human primary glomerular endothelial cells (hPGECs) and evaluating this expression in the kidney tissues of a 5/6 nephrectomy mouse model as well as patients with hypertension. Hypertension-mimicking devices and KLF2 siRNA were used to downregulate KLF2 expression, while the expression of KLF2 was upregulated by administering simvastatin. After 4 mmHg of pressure was applied on hPGECs for 48 h, KLF2 mRNA expression decreased, while alpha-smooth muscle actin (αSMA) mRNA expression increased. Apoptosis and fibrosis rates were increased under pressure, and these phenomena were aggravated following KLF2 knockdown, but were alleviated after simvastatin treatment; additionally, these changes were observed in angiotensin II, angiotensin type-1 receptor (AT1R) mRNA, and interleukin-18 (IL-18), but not in angiotensin type-2 receptor mRNA. Reduced expression of KLF2 in glomerular endothelial cells due to hypertension was found in both 5/6 nephrectomy mice and patients with hypertensive nephropathy. Thus, our study demonstrates that the pressure-induced apoptosis and fibrosis of glomerular endothelial cells result from angiotensin II, AT1R activation, and KLF2 inhibition, and are associated with IL-18.
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11
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Protective Effects of Ginkgolide on a Cellular Model of Alzheimer's Disease via Suppression of the NF-κB Signaling Pathway. Appl Biochem Biotechnol 2022; 194:2448-2464. [PMID: 35129804 PMCID: PMC9117391 DOI: 10.1007/s12010-022-03828-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 01/21/2022] [Indexed: 11/17/2022]
Abstract
NF-κB signaling has been reported to play a key regulatory role in the pathogenesis of Alzheimer’s disease (AD). The purpose of this study is to investigate the effects of ginkgolide on cell viability in an AD cellular model involving an APP/PS1 double gene-transfected HEK293 cell line (APP/PS1-HEK293) and further explore the mechanisms of action related to NF-κB signaling. The optimal time point and concentration of ginkgolide for cell proliferation were screened using a cell counting kit-8 assay. Based on the results, an in vitro study was performed by co-culture of APP/PS1-HEK293 with different dosages of ginkgolide, followed by an enzyme-linked immunosorbent assay to measure the levels of supernatant tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6, as well as western blotting and real-time polymerase chain reaction to detect intracellular protein and mRNA expression of NF-κB p65, IκBa, Bcl-2, and Bax. APP/PS1-HEK293 cells exhibited the highest cell viability at a concentration of 100 µg/ml after 48 h of treatment with ginkgolide. The supernatant levels of TNF-α, IL-1β, and IL-6 in the high-dosage ginkgolide-treated groups were lower than those in the control group. Compared with the control group, there were decreased intracellular protein and mRNA expression of NF-κB p65 and Bax, but increased protein and mRNA expression of IκBa in both high-dosage and low-dosage groups. Ginkgolide may enhance cell viability, indicative of its neuroprotective effects on AD, at least partially via suppression of the NF-κB signaling pathway involving anti-apoptosis and anti-inflammation mechanisms. Therefore, ginkgolide might be a promising therapeutic agent against AD.
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12
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Wu N, Chen S, Luo Q, Jiang Z, Wang X, Li Y, Qiu J, Yu K, Yang Y, Zhuang J. Kruppel-like factor 2 acts as a tumor suppressor in human retinoblastoma. Exp Eye Res 2022; 216:108955. [DOI: 10.1016/j.exer.2022.108955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 01/10/2022] [Accepted: 01/18/2022] [Indexed: 12/26/2022]
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13
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Duan Q, Si E. MicroRNA-25 aggravates Aβ1-42-induced hippocampal neuron injury in Alzheimer's disease by downregulating KLF2 via the Nrf2 signaling pathway in a mouse model. J Cell Biochem 2019; 120:15891-15905. [PMID: 31144355 DOI: 10.1002/jcb.28861] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/12/2019] [Accepted: 02/14/2019] [Indexed: 12/21/2022]
Abstract
Recently, numerous microRNAs (miRNAs) have been considered as key players in the regulation of neuronal processes. The purpose of the present study is to explore the effect of miR-25 on hippocampal neuron injury in Alzheimer's disease (AD) induced by amyloid β (Aβ) peptide fragment 1 to 42 (Aβ1-42) via Kruppel-like factor 2 (KLF2) through the nuclear factor-E2-related factor 2 (Nrf2) signaling pathway. A mouse model of AD was established through Aβ1-42 induction. The underlying regulatory mechanisms of miR-25 were analyzed through treatment of miR-25 mimics, miR-25 inhibitors, or small interfering RNA (siRNA) against KLF2 in hippocampal tissues and cells isolated from AD mice. The targeting relationship between miR-25 and KLF2 was predicted using a target prediction program and verified by luciferase activity determination. MTT assay was used to evaluate the proliferative ability and flow cytometry to detect cell cycle distribution and apoptosis. KLF2 was confirmed as a target gene of miR-25. When the mice were induced by Aβ1-42, proliferation was suppressed while apoptosis was promoted in hippocampal neurons as evidenced by lower levels of KLF2, Nrf2, haem oxygenase, glutathione S transferase α1, glutathione, thioredoxin, and B-cell lymphoma-2 along with higher bax level. However, such alternations could be reversed by treatment of miR-25 inhibitors. These findings indicate that miR-25 may inhibit hippocampal neuron proliferation while promoting apoptosis, thereby aggravating hippocampal neuron injury through downregulation of KLF2 via the Nrf2 signaling pathway.
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Affiliation(s)
- Qiang Duan
- Department of Neurology, Heze Third People's Hospital, Heze, People's Republic of China
| | - Erwang Si
- Department of Neurology, Heze Third People's Hospital, Heze, People's Republic of China
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14
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The exploration of novel Alzheimer's therapeutic agents from the pool of FDA approved medicines using drug repositioning, enzyme inhibition and kinetic mechanism approaches. Biomed Pharmacother 2018; 109:2513-2526. [PMID: 30551512 DOI: 10.1016/j.biopha.2018.11.115] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/19/2018] [Accepted: 11/25/2018] [Indexed: 12/11/2022] Open
Abstract
Novel drug development is onerous, time consuming and overpriced process with particularly low success and relatively high enfeebling rates. To overcome this burden, drug repositioning approach is being used to predict the possible therapeutic effects of FDA approved drugs in different diseases. Herein, we designed a computational and enzyme inhibitory mechanistic approach to fetch the promising drugs from the pool of FDA approved drugs against AD. The binding interaction patterns and conformations of screened drugs within active region of AChE were confirmed through molecular docking profiles. The possible associations of selected drugs with AD genes were predicted by pharmacogenomics analysis and confirmed through data mining. The stability behaviour of docked complexes (Drugs-AChE) were checked by MD simulations. The possible therapeutic potential of repositioned drugs against AChE were checked by in vitro analysis. Taken together, Cinitapride displayed a comparable results with standard and can be used as possible therapeutic agent in the treatment of AD.
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15
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Sweet DR, Fan L, Hsieh PN, Jain MK. Krüppel-Like Factors in Vascular Inflammation: Mechanistic Insights and Therapeutic Potential. Front Cardiovasc Med 2018; 5:6. [PMID: 29459900 PMCID: PMC5807683 DOI: 10.3389/fcvm.2018.00006] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 01/17/2018] [Indexed: 12/19/2022] Open
Abstract
The role of inflammation in vascular disease is well recognized, involving dysregulation of both circulating immune cells as well as the cells of the vessel wall itself. Unrestrained vascular inflammation leads to pathological remodeling that eventually contributes to atherothrombotic disease and its associated sequelae (e.g., myocardial/cerebral infarction, embolism, and critical limb ischemia). Signaling events during vascular inflammation orchestrate widespread transcriptional programs that affect the functions of vascular and circulating inflammatory cells. The Krüppel-like factors (KLFs) are a family of transcription factors central in regulating vascular biology in states of homeostasis and disease. Given their abundance and diversity of function in cells associated with vascular inflammation, understanding the transcriptional networks regulated by KLFs will further our understanding of the pathogenesis underlying several pervasive health concerns (e.g., atherosclerosis, stroke, etc.) and consequently inform the treatment of cardiovascular disease. Within this review, we will discuss the role of KLFs in coordinating protective and deleterious responses during vascular inflammation, while addressing the potential targeting of these critical transcription factors in future therapies.
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Affiliation(s)
- David R Sweet
- Case Cardiovascular Research Institute, Case Western Reserve University, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Liyan Fan
- Case Cardiovascular Research Institute, Case Western Reserve University, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Paishiun N Hsieh
- Case Cardiovascular Research Institute, Case Western Reserve University, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Mukesh K Jain
- Case Cardiovascular Research Institute, Case Western Reserve University, Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
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16
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Song D, Jiang X, Liu Y, Sun Y, Cao S, Zhang Z. Asiaticoside Attenuates Cell Growth Inhibition and Apoptosis Induced by Aβ 1-42 via Inhibiting the TLR4/NF-κB Signaling Pathway in Human Brain Microvascular Endothelial Cells. Front Pharmacol 2018; 9:28. [PMID: 29441018 PMCID: PMC5797575 DOI: 10.3389/fphar.2018.00028] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/10/2018] [Indexed: 12/13/2022] Open
Abstract
Alzheimer's disease (AD) is a very common progressive neurodegenerative disorder with the highest incidence in the world. Dysfunction of the blood-brain barrier (BBB) may be responsible for the pathogenesis and pathology of AD for abnormally transporting amyloid-β (Aβ, the main component of the senile plaques) from the sera into the central nervous system. Aβ peptides induce apoptosis in human brain microvascular endothelial cells (hBMECs), the main component of BBB. Apoptosis in neuronal cells plays a critical role in the pathogenesis of AD. Asiaticoside, a natural glycoside extracted from Centella asiatica (L.) Urban, has an anti-apoptotic effect on hBMECs but the molecule mechanism remains unclear. Therefore, we investigate the protective effect of asiaticoside on Aβ1-42-induced cytotoxicity and apoptosis as well as associated mechanism in hBMECs with commonly used in vitro methods for clinical development of asiaticoside as a novel anti-AD agent. In the present study, we investigated the effects of asiaticoside on cytotoxicity by Cell Counting Kit-8 assay, mitochondrial membrane potential by JC-1 fluorescence analysis, anti-apoptosis by Hoechst 33258 staining and Annexin V-FITC (fluorescein isothiocyanate) and propidium iodide (PI) analyses, the expressions of TNF-α and IL-6 by enzyme-linked immunosorbent assay (ELISA) and TLR4, MyD88, TRAF6, p-NF-κB p65, and total NF-κB p65 by Western blotting, and nuclear translocation of NF-κB p65 by immunofluorescence analysis in hBMECs. The results showed that pretreatment of asiaticoside (25, 50, and 100 μM) for 12 h significantly attenuated cell growth inhibition and apoptosis, and restored declined mitochondrial membrane potential induced by Aβ1-42 (50 μM) in hBMECs. Asiaticoside also significantly downregulated the elevated expressions of TNF-α, IL-6, TLR4, MyD88, TRAF6, and p-NF-κB p65, as well as inhibited NF-κB p65 translocation from cytoplasm to nucleus induced by Aβ1-42 in hBMECs in a concentration-dependent manner. The possible underlying molecular mechanism of asiaticoside may be through inhibiting the TLR4/NF-κB signaling pathway. Therefore, asiaticoside may be developed as a novel agent for the prevention and/or treatment of AD clinically.
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Affiliation(s)
- Daqiang Song
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Xian Jiang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yiliu Liu
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Yuhong Sun
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Shousong Cao
- Department of Pharmacology, Southwest Medical University, Luzhou, China
| | - Zhuo Zhang
- Department of Pharmacology, Southwest Medical University, Luzhou, China
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