1
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Lacombe A, Scorrano L. The interplay between mitochondrial dynamics and autophagy: From a key homeostatic mechanism to a driver of pathology. Semin Cell Dev Biol 2024; 161-162:1-19. [PMID: 38430721 DOI: 10.1016/j.semcdb.2024.02.001] [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: 11/06/2023] [Revised: 02/06/2024] [Accepted: 02/15/2024] [Indexed: 03/05/2024]
Abstract
The complex relationship between mitochondrial dynamics and autophagy illustrates how two cellular housekeeping processes are intimately linked, illuminating fundamental principles of cellular homeostasis and shedding light on disparate pathological conditions including several neurodegenerative disorders. Here we review the basic tenets of mitochondrial dynamics i.e., the concerted balance between fusion and fission of the organelle, and its interplay with macroautophagy and selective mitochondrial autophagy, also dubbed mitophagy, in the maintenance of mitochondrial quality control and ultimately in cell viability. We illustrate how conditions of altered mitochondrial dynamics reverberate on autophagy and vice versa. Finally, we illustrate how altered interplay between these two key cellular processes participates in the pathogenesis of human disorders affecting multiple organs and systems.
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Affiliation(s)
- Alice Lacombe
- Dept. of Biology, University of Padova, Padova, Italy
| | - Luca Scorrano
- Dept. of Biology, University of Padova, Padova, Italy; Veneto Institute of Molecular Medicine, Padova, Italy.
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2
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Cai P, Li W, Xu Y, Wang H. Drp1 and neuroinflammation: Deciphering the interplay between mitochondrial dynamics imbalance and inflammation in neurodegenerative diseases. Neurobiol Dis 2024; 198:106561. [PMID: 38857809 DOI: 10.1016/j.nbd.2024.106561] [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: 03/17/2024] [Revised: 05/24/2024] [Accepted: 06/07/2024] [Indexed: 06/12/2024] Open
Abstract
Neuroinflammation and mitochondrial dysfunction are closely intertwined with the pathophysiology of neurological disorders. Recent studies have elucidated profound alterations in mitochondrial dynamics across a spectrum of neurological disorders. Dynamin-related protein 1 (DRP1) emerges as a pivotal regulator of mitochondrial fission, with its dysregulation disrupting mitochondrial homeostasis and fueling neuroinflammation, thereby exacerbating disease severity. In addition to its role in mitochondrial dynamics, DRP1 plays a crucial role in modulating inflammation-related pathways. This review synthesizes important functions of DRP1 in the central nervous system (CNS) and the impact of epigenetic modification on the progression of neurodegenerative diseases. The intricate interplay between neuroinflammation and DRP1 in microglia and astrocytes, central contributors to neuroinflammation, is expounded upon. Furthermore, the use of DRP1 inhibitors to influence the activation of microglia and astrocytes, as well as their involvement in processes such as mitophagy, mitochondrial oxidative stress, and calcium ion transport in CNS-mediated neuroinflammation, is scrutinized. The modulation of microglia to astrocyte crosstalk by DRP1 and its role in inflammatory neurodegeneration is also highlighted. Overall, targeting DRP1 presents a promising avenue for ameliorating neuroinflammation and enhancing the therapeutic management of neurological disorders.
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Affiliation(s)
- Peiyang Cai
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Wuhao Li
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Ye Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Hui Wang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China..
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3
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Baron KR, Oviedo S, Krasny S, Zaman M, Aldakhlallah R, Mathur P, Pfeffer G, Bollong MJ, Shutt T, Grotjahn DA, Wiseman RL. Pharmacologic Activation of Integrated Stress Response Kinases Inhibits Pathologic Mitochondrial Fragmentation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.10.598126. [PMID: 38915623 PMCID: PMC11195119 DOI: 10.1101/2024.06.10.598126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Excessive mitochondrial fragmentation is associated with the pathologic mitochondrial dysfunction implicated in the pathogenesis of etiologically-diverse diseases, including many neurodegenerative disorders. The integrated stress response (ISR) - comprising the four eIF2α kinases PERK, GCN2, PKR, and HRI - is a prominent stress-responsive signaling pathway that regulates mitochondrial morphology and function in response to diverse types of pathologic insult. This suggests that pharmacologic, stress-independent activation of the ISR represents a potential strategy to mitigate pathologic mitochondrial fragmentation associated with human disease. Here, we show that pharmacologic, stress-independent activation of the ISR kinases HRI or GCN2 promotes adaptive mitochondrial elongation and prevents mitochondrial fragmentation induced by the calcium ionophore ionomycin. Further, we show that stress-independent activation of these ISR kinases reduces mitochondrial fragmentation and restores basal mitochondrial morphology in patient fibroblasts expressing the pathogenic D414V variant of the pro-fusion mitochondrial GTPase MFN2 associated with neurological dysfunctions including ataxia, optic atrophy, and sensorineural hearing loss. These results identify pharmacologic, stress-independent activation of ISR kinases as a potential strategy to prevent pathologic mitochondrial fragmentation induced by disease-relevant chemical and genetic insults, further motivating the pursuit of highly selective ISR kinase-activating compounds as a therapeutic strategy to mitigate mitochondrial dysfunction implicated in diverse human diseases.
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Affiliation(s)
- Kelsey R. Baron
- Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037
- These authors contributed equally
| | - Samantha Oviedo
- Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037
- Department of Integrative Structural and Computation Biology, The Scripps Research Institute, La Jolla, CA 92037
- These authors contributed equally
| | - Sophia Krasny
- Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037
| | - Mashiat Zaman
- Department of Biochemistry and Molecular Biology, Cummings School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Rama Aldakhlallah
- Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037
| | - Prakhyat Mathur
- Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037
| | - Gerald Pfeffer
- Hotchkiss Brain Institute, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary; Alberta Child Health Research Institute, Department of Medical Genetics, Cumming School of Medicine, University of Calgary
| | - Michael J. Bollong
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037
| | - Timothy Shutt
- Departments of Medical Genetics and Biochemistry & Molecular Biology, Cumming School of Medicine, Hotchkiss Brain Institute, Snyder Institute for Chronic Diseases, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Danielle A. Grotjahn
- Department of Integrative Structural and Computation Biology, The Scripps Research Institute, La Jolla, CA 92037
| | - R. Luke Wiseman
- Department of Molecular and Cellular Biology, The Scripps Research Institute, La Jolla, CA 92037
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4
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Dhapola R, Sharma P, Kumari S, Bhatti JS, HariKrishnaReddy D. Environmental Toxins and Alzheimer's Disease: a Comprehensive Analysis of Pathogenic Mechanisms and Therapeutic Modulation. Mol Neurobiol 2024; 61:3657-3677. [PMID: 38006469 DOI: 10.1007/s12035-023-03805-x] [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: 08/21/2023] [Accepted: 11/13/2023] [Indexed: 11/27/2023]
Abstract
Alzheimer's disease is a leading cause of mortality worldwide. Inorganic and organic hazards, susceptibility to harmful metals, pesticides, agrochemicals, and air pollution are major environmental concerns. As merely 5% of AD cases are directly inherited indicating that these environmental factors play a major role in disease development. Long-term exposure to environmental toxins is believed to progress neuropathology, which leads to the development of AD. Numerous in-vitro and in-vivo studies have suggested the harmful impact of environmental toxins at cellular and molecular level. Common mechanisms involved in the toxicity of these environmental pollutants include oxidative stress, neuroinflammation, mitochondrial dysfunction, abnormal tau, and APP processing. Increased expression of GSK-3β, BACE-1, TNF-α, and pro-apoptotic molecules like caspases is observed upon exposure to these environmental toxins. In addition, the expression of neurotrophins like BDNF and GAP-43 have been found to be reduced as a result of toxicity. Further, modulation of signaling pathways involving PARP-1, PGC-1α, and MAPK/ERK induced by toxins have been reported to contribute in AD pathogenesis. These pathways are a promising target for developing novel AD therapeutics. Drugs like epigallocatechin-gallate, neflamapimod, salsalate, dexmedetomidine, and atabecestat are in different phases of clinical trials targeting the pathways for possible treatment of AD. This review aims to culminate the correlation between environmental toxicants and AD development. We emphasized upon the signaling pathways involved in the progression of the disease and the therapeutics under clinical trial targeting the altered pathways for possible treatment of AD.
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Affiliation(s)
- Rishika Dhapola
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India
| | - Prajjwal Sharma
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India
| | - Sneha Kumari
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India
| | - Jasvinder Singh Bhatti
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, 151 401, India
| | - Dibbanti HariKrishnaReddy
- Advanced Pharmacology and Neuroscience Laboratory, Department of Pharmacology, Central University of Punjab, Bathinda, 151 401, India.
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5
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Kaur S, Khullar N, Navik U, Bali A, Bhatti GK, Bhatti JS. Multifaceted role of dynamin-related protein 1 in cardiovascular disease: From mitochondrial fission to therapeutic interventions. Mitochondrion 2024; 78:101904. [PMID: 38763184 DOI: 10.1016/j.mito.2024.101904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 05/01/2024] [Accepted: 05/15/2024] [Indexed: 05/21/2024]
Abstract
Mitochondria are central to cellular energy production and metabolic regulation, particularly in cardiomyocytes. These organelles constantly undergo cycles of fusion and fission, orchestrated by key proteins like Dynamin-related Protein 1 (Drp-1). This review focuses on the intricate roles of Drp-1 in regulating mitochondrial dynamics, its implications in cardiovascular health, and particularly in myocardial infarction. Drp-1 is not merely a mediator of mitochondrial fission; it also plays pivotal roles in autophagy, mitophagy, apoptosis, and necrosis in cardiac cells. This multifaceted functionality is often modulated through various post-translational alterations, and Drp-1's interaction with intracellular calcium (Ca2 + ) adds another layer of complexity. We also explore the pathological consequences of Drp-1 dysregulation, including increased reactive oxygen species (ROS) production and endothelial dysfunction. Furthermore, this review delves into the potential therapeutic interventions targeting Drp-1 to modulate mitochondrial dynamics and improve cardiovascular outcomes. We highlight recent findings on the interaction between Drp-1 and sirtuin-3 and suggest that understanding this interaction may open new avenues for therapeutically modulating endothelial cells, fibroblasts, and cardiomyocytes. As the cardiovascular system increasingly becomes the focal point of aging and chronic disease research, understanding the nuances of Drp-1's functionality can lead to innovative therapeutic approaches.
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Affiliation(s)
- Satinder Kaur
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda India
| | - Naina Khullar
- Department of Zoology, Mata Gujri College, Fatehgarh Sahib, Punjab, India
| | - Umashanker Navik
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, India
| | - Anjana Bali
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, India
| | - Gurjit Kaur Bhatti
- Department of Medical Lab Technology, University Institute of Applied Health Sciences, Chandigarh University, Mohali India.
| | - Jasvinder Singh Bhatti
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda India.
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6
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Cao X, Zhang Y, Shi Y, Li Y, Gao L, Wang X, Sun L. Identification of critical mitochondrial hub gene for facial nerve regeneration. Biochem Cell Biol 2024; 102:179-193. [PMID: 38086039 DOI: 10.1139/bcb-2023-0224] [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] [Indexed: 01/23/2024] Open
Abstract
Mitochondria play a critical role in nerve regeneration, yet the impact of gene expression changes related to mitochondria in facial nerve regeneration remains unknown. To address this knowledge gap, we analyzed the expression profile of the facial motor nucleus (FMN) using data obtained from the Gene Expression Omnibus (GEO) database (GSE162977). By comparing different time points in the data, we identified differentially expressed genes (DEGs). Additionally, we collected mitochondria-related genes from the Gene Ontology (GO) database and intersected them with the DEGs, resulting in the identification of mitochondria-related DEGs (MIT-DEGs). To gain further insights, we performed functional enrichment and pathway analysis of the MIT-DEGs. To explore the interactions among these MIT-DEGs, we constructed a protein-protein interaction (PPI) network using the STRING database and identified hub genes using the Degree algorithm of Cytoscape software. To validate the relevance of these genes to nerve regeneration, we established a rat facial nerve injury (FNI) model and conducted a series of experiments. Through these experiments, we confirmed three MIT-DEGs (Myc, Lyn, and Cdk1) associated with facial nerve regeneration. Our findings provide valuable insights into the transcriptional changes of mitochondria-related genes in the FMN following FNI, which can contribute to the development of new treatment strategies for FNI.
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Affiliation(s)
- Xiaofang Cao
- Department of Dentistry, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
- Heilongjiang Provincial Key Laboratory of Hard Tissue Development and Regeneration, Harbin Medical University, Harbin, China
| | - Yan Zhang
- Department of Dentistry, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Yu Shi
- Department of Dentistry, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Ying Li
- Heilongjiang Provincial Key Laboratory of Hard Tissue Development and Regeneration, Harbin Medical University, Harbin, China
- Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Li Gao
- Department of Dentistry, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xiumei Wang
- Department of Dentistry, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Liang Sun
- Department of Human Anatomy, School of Basic Medicine, Harbin Medical University, Harbin, China
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7
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Reiss AB, Gulkarov S, Jacob B, Srivastava A, Pinkhasov A, Gomolin IH, Stecker MM, Wisniewski T, De Leon J. Mitochondria in Alzheimer's Disease Pathogenesis. Life (Basel) 2024; 14:196. [PMID: 38398707 PMCID: PMC10890468 DOI: 10.3390/life14020196] [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: 01/05/2024] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Alzheimer's disease (AD) is a progressive and incurable neurodegenerative disorder that primarily affects persons aged 65 years and above. It causes dementia with memory loss and deterioration in thinking and language skills. AD is characterized by specific pathology resulting from the accumulation in the brain of extracellular plaques of amyloid-β and intracellular tangles of phosphorylated tau. The importance of mitochondrial dysfunction in AD pathogenesis, while previously underrecognized, is now more and more appreciated. Mitochondria are an essential organelle involved in cellular bioenergetics and signaling pathways. Mitochondrial processes crucial for synaptic activity such as mitophagy, mitochondrial trafficking, mitochondrial fission, and mitochondrial fusion are dysregulated in the AD brain. Excess fission and fragmentation yield mitochondria with low energy production. Reduced glucose metabolism is also observed in the AD brain with a hypometabolic state, particularly in the temporo-parietal brain regions. This review addresses the multiple ways in which abnormal mitochondrial structure and function contribute to AD. Disruption of the electron transport chain and ATP production are particularly neurotoxic because brain cells have disproportionately high energy demands. In addition, oxidative stress, which is extremely damaging to nerve cells, rises dramatically with mitochondrial dyshomeostasis. Restoring mitochondrial health may be a viable approach to AD treatment.
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Affiliation(s)
- Allison B. Reiss
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
| | - Shelly Gulkarov
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
| | - Benna Jacob
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
| | - Ankita Srivastava
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
| | - Aaron Pinkhasov
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
| | - Irving H. Gomolin
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
| | - Mark M. Stecker
- The Fresno Institute of Neuroscience, Fresno, CA 93730, USA;
| | - Thomas Wisniewski
- Center for Cognitive Neurology, Departments of Neurology, Pathology and Psychiatry, New York University Grossman School of Medicine, New York, NY 10016, USA;
| | - Joshua De Leon
- Department of Medicine and Biomedical Research Institute, NYU Grossman Long Island School of Medicine, Mineola, NY 11501, USA; (S.G.); (B.J.); (A.S.); (A.P.); (I.H.G.); (J.D.L.)
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Dhapola R, Beura SK, Sharma P, Singh SK, HariKrishnaReddy D. Oxidative stress in Alzheimer's disease: current knowledge of signaling pathways and therapeutics. Mol Biol Rep 2024; 51:48. [PMID: 38165499 DOI: 10.1007/s11033-023-09021-z] [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: 08/10/2023] [Accepted: 10/23/2023] [Indexed: 01/03/2024]
Abstract
Alzheimer's disease's pathophysiology is still a conundrum. Growing number of evidences have elucidated the involvement of oxidative stress in the pathology of AD rendering it a major target for therapeutic development. Reactive oxygen species (ROS) generated by altered mitochondrial function, dysregulated electron transport chain and other sources elevate aggregated Aβ and neurofibrillary tangles which further stimulating the production of ROS. Oxidative stress induced damage to lipids, proteins and DNA result in neuronal death which leads to AD. In addition, oxidative stress induces apoptosis that is triggered by the modulation of ERK1/2 and Nrf2 pathway followed by increased GSK-3β expression and decreased PP2A activity. Oxidative stress exaggerates disease condition by interfering with various signaling pathways like RCAN1, CREB/ERK, Nrf2, PP2A, NFκB and PI3K/Akt. Studies have reported the role of TNF-α in oxidative stress stimulation that has been regulated by drugs like etanercept increasing the level of anti-oxidants. Other drugs like pramipexole, memantine, carvedilol, and melatonin have been reported to activate CREB/RCAN1 and Nrf2 pathways. In line with this, epigallocatechin gallate and genistein also target Nrf2 and CREB pathway leading to activation of downstream pathways like ARE and Keap1 which ameliorate oxidative stress condition. Donepezil and resveratrol reduce oxidative stress and activate AMPK pathway along with PP2A activation thus promoting tau dephosphorylation and neuronal survival. This study describes in detail the role of oxidative stress in AD, major signaling pathways involving oxidative stress induced AD and drugs under development targeting these pathways which may aid in therapeutic advances for AD.
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Affiliation(s)
- Rishika Dhapola
- Advanced Pharmacology and Neuroscience Laboratoty, Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India
| | - Samir K Beura
- Department of Zoology, School of Basic and Applied Science, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India
| | - Prajjwal Sharma
- Advanced Pharmacology and Neuroscience Laboratoty, Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India
| | - Sunil K Singh
- Department of Zoology, School of Basic and Applied Science, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India.
| | - Dibbanti HariKrishnaReddy
- Advanced Pharmacology and Neuroscience Laboratoty, Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India.
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9
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Dhapola R, Kumari S, Sharma P, HariKrishnaReddy D. Insight into the emerging and common experimental in-vivo models of Alzheimer's disease. Lab Anim Res 2023; 39:33. [PMID: 38082453 PMCID: PMC10712122 DOI: 10.1186/s42826-023-00184-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/21/2023] [Accepted: 12/04/2023] [Indexed: 05/30/2024] Open
Abstract
Alzheimer's disease (AD) is a multifactorial, rapidly progressing neurodegenerative disorder. As the exact cause of the disease is still unclear, the drug development is very challenging. This review encompasses the commonly used AD models involving various chemicals, heavy metals and endogenous substances induced models and the transgenic models. It also provides insight into the reliable emerging models of AD that may overcome the shortcomings associated with available models. Chemicals like streptozotocin, scopolamine, colchicine and okadaic acid render the animal susceptible to neuroinflammation and oxidative stress induced neurodegeneration along with amyloid-β deposition and tau hyperphosphorylation. Similarly, endogenous substances like acrolein and amyloid-β 1-42 are efficient in inducing the major pathologies of AD. Heavy metals like aluminum and fluoride and mixture of these have been reported to induce neurotoxicity therefore are used as animal models for AD. Transgenic models developed as a result of knock-in or knock-out of certain genes associated with AD including PDAPP, APP23, Tg2576, APP/PS1, 3 × Tg and 5 × FAD have also been incorporated in this study. Further, emerging and advanced pathomimetic models of AD are provided particular interest here which will add on to the current knowledge of animal models and may aid in the drug development process and deepen our understanding related to AD pathogenesis. These newly discovered models include oAβ25-35 model, transgenic model expressing 82-kDa ChAT, oDGal mouse and APP knock-in rat. This study may aid in the selection of suitable model for development of novel potent therapeutics and for exploring detailed pathogenic mechanism of AD.
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Affiliation(s)
- Rishika Dhapola
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India
| | - Sneha Kumari
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India
| | - Prajjwal Sharma
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India
| | - Dibbanti HariKrishnaReddy
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda, Punjab, 151401, India.
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10
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Al-Kuraishy HM, Jabir MS, Albuhadily AK, Al-Gareeb AI, Rafeeq MF. The link between metabolic syndrome and Alzheimer disease: A mutual relationship and long rigorous investigation. Ageing Res Rev 2023; 91:102084. [PMID: 37802319 DOI: 10.1016/j.arr.2023.102084] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/01/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023]
Abstract
It has been illustrated that metabolic syndrome (MetS) is associated with Alzheimer disease (AD) neuropathology. Components of MetS including central obesity, hypertension, insulin resistance (IR), and dyslipidemia adversely affect the pathogenesis of AD by different mechanisms including activation of renin-angiotensin system (RAS), inflammatory signaling pathways, neuroinflammation, brain IR, mitochondrial dysfunction, and oxidative stress. MetS exacerbates AD neuropathology, and targeting of molecular pathways in MetS by pharmacological approach could a novel therapeutic strategy in the management of AD in high risk group. However, the underlying mechanisms of these pathways in AD neuropathology are not completely clarified. Therefore, this review aims to elucidate the association between MetS and AD regarding the oxidative and inflammatory mechanistic pathways.
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Affiliation(s)
- Haydar M Al-Kuraishy
- Department of Clinical pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq
| | - Majid S Jabir
- Department of Applied science, University of technology, Iraq.
| | - Ali K Albuhadily
- Department of Clinical pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq
| | - Ali I Al-Gareeb
- Department of Clinical pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq
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11
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Nagar P, Sharma P, Dhapola R, Kumari S, Medhi B, HariKrishnaReddy D. Endoplasmic reticulum stress in Alzheimer's disease: Molecular mechanisms and therapeutic prospects. Life Sci 2023; 330:121983. [PMID: 37524162 DOI: 10.1016/j.lfs.2023.121983] [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: 03/25/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative condition that leads to memory loss and cognitive impairment over time. It is characterized by protein misfolding as well as prolonged cellular stress, such as perturbing calcium homeostasis and redox management. Numerous investigations have proven that endoplasmic reticulum failure may exhibit exacerbation of AD pathogenesis in AD patients, in-vivo and in-vitro models. The endoplasmic reticulum (ER) participates in a variety of biological functions including folding of protein, quality control, cholesterol production, and maintenance of calcium balance. A diverse range of physiological, pathological and pharmacological substances can interfere with ER activity and thus lead to exaggeration of ER stress. The unfolded protein response (UPR), an intracellular signaling network is stimulated due to ER stress. Three stress sensors found in the endoplasmic reticulum, the PERK, ATF6, and IRE1 transducers detect protein misfolding in the ER and trigger UPR, a complex system to maintain homeostasis. ER stress is linked to many of the major pathological processes that are seen in AD, including presenilin1 and 2 (PS1 and PS2) gene mutation, tau phosphorylation and β-amyloid formation. The role of ER stress and UPR in the pathophysiology of AD implies that they can be employed as potent therapeutic target. This study shows the relationship between ER and AD and how the pathogenesis of AD is influenced by the impact of ER stress. An effective method for the prevention or treatment of AD may involve therapeutic strategies that modify ER stress pathways.
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Affiliation(s)
- Pushank Nagar
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Prajjwal Sharma
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Rishika Dhapola
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Sneha Kumari
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Bikash Medhi
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Dibbanti HariKrishnaReddy
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India.
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Perrone L. Editorial: Mitochondrial dysfunction as a target in neurodegenerative diseases. Front Mol Neurosci 2023; 16:1271175. [PMID: 37771558 PMCID: PMC10523779 DOI: 10.3389/fnmol.2023.1271175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 08/10/2023] [Indexed: 09/30/2023] Open
Affiliation(s)
- Lorena Perrone
- Faculty of Medicine, University of Enna “Kore”, Enna, Italy
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