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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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Walsh MA, Latham AS, Zhang Q, Jacobs RA, Musci RV, LaRocca TJ, Moreno JA, Santangelo KS, Hamilton KL. Non-transgenic guinea pig strains exhibit divergent age-related changes in hippocampal mitochondrial respiration. Acta Physiol (Oxf) 2024:e14185. [PMID: 38860650 DOI: 10.1111/apha.14185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 05/15/2024] [Accepted: 05/18/2024] [Indexed: 06/12/2024]
Abstract
AIM Alzheimer's disease (AD) is the most common form of dementia. However, while 150+ animal models of AD exist, drug translation from preclinical models to humans for treatment usually fails. One factor contributing to low translation is likely the absence of neurodegenerative models that also encompass the multi-morbidities of human aging. We previously demonstrated that, in comparison to the PigmEnTed (PET) guinea pig strain which models "typical" brain aging, the Hartley strain develops hallmarks of AD like aging humans. Hartleys also exhibit age-related impairments in cartilage and skeletal muscle. Impaired mitochondrial respiration is one driver of both cellular aging and AD. In humans with cognitive decline, diminished skeletal muscle and brain respiratory control occurs in parallel. We previously reported age-related declines in skeletal muscle mitochondrial respiration in Hartleys. It is unknown if there is concomitant mitochondrial dysfunction in the brain. METHODS Therefore, we assessed hippocampal mitochondrial respiration in 5- and 12-month Hartley and PET guinea pigs using high-resolution respirometry. RESULTS At 12 months, PETs had higher complex I supported mitochondrial respiration paralleling their increase in body mass compared to 5 months PETs. Hartleys were also heavier at 12 months compared to 5 months but did not have higher complex I respiration. Compared to 5 months Hartleys, 12 months Hartleys had lower complex I mitochondrial efficiency and compensatory increases in mitochondrial proteins collectively suggesting mitochondrial dysfunction with age. CONCLUSIONS Therefore, Hartleys might be a relevant model to test promising therapies targeting mitochondria to slow brain aging and AD progression.
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Affiliation(s)
- Maureen A Walsh
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado, USA
| | - Amanda S Latham
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Qian Zhang
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado, USA
| | - Robert A Jacobs
- Department of Human Physiology and Nutrition, University of Colorado Colorado Springs (UCCS), Colorado Springs, Colorado, USA
- William J. Hybl Sports Medicine and Performance Center, Colorado Springs, Colorado, USA
| | - Robert V Musci
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado, USA
| | - Thomas J LaRocca
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, Colorado, USA
| | - Julie A Moreno
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, Colorado, USA
| | - Kelly S Santangelo
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, Colorado, USA
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado, USA
| | - Karyn L Hamilton
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, Colorado, USA
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Chen HK, Hsieh YW, Hsu HY, Liu TY, Zhang YT, Lin CD, Tsai FJ. Increased risk of hearing loss associated with MT-RNR1 gene mutations: a real-world investigation among Han Taiwanese Population. BMC Med Genomics 2024; 17:155. [PMID: 38840095 PMCID: PMC11155076 DOI: 10.1186/s12920-024-01921-8] [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: 04/14/2024] [Accepted: 05/23/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND Previous studies have implicated inherited mutations in mitochondrial DNA (mtDNA) in sensorineural hearing loss (SNHL). However, the definitive association between mitochondrial 12S rRNA (MT-RNR1) variants and hearing loss in the population has not been well established, particularly in Asia. The objective of this retrospective cohort study was to assess the association between MT-RNR1 variants and the risk of SNHL in patients in Taiwan. METHODS The cohort included 306,068 participants from Taiwan between January 2003 and December 2020. Participants were classified based on genetic variants, particularly mitochondrial mutations (rs267606618, rs267606619, rs267606617). MT-RNR1 variant cases were matched 1:10 with non-mutant patients by age, gender, and visit year, excluding those with pre-existing hearing loss. The primary endpoint was SNHL, identified using specific ICD-TM codes with a 90% positive predictive value. Medication exposure history was determined via self-report or electronic medical records in the hospital. Cox proportional hazard regression models were used to assess the association between MT-RNR1 variants and hearing loss, adjusting for various covariates. Kaplan-Meier survival curves and log-rank tests compared hearing loss incidence between groups. RESULTS The mean age of the mtDNA variants group is 32.4 years, with a standard deviation of 19.2 years. The incidence density of hearing loss for the mutation group was 36.42 per 10,000 person-years (95% Confidence Interval [CI], 27.21-47.73), which was higher than the 23.77per 10,000 person-years (95% CI, 21.32-26.42) in the wild-type group (p = 0.0036). Additionally, diabetes mellitus was associated with an increased risk of developing SNHL in individuals with MT-RNR1 variants (adjusted hazard ratio = 1.76 [95% CI, 1.00-3.09], p < 0.05). CONCLUSION This study highlights the increased risk of hearing loss in patients carrying MT-RNR1 variants, particularly those with diabetes mellitus. Future research that integrates genetic and clinical data is crucial for developing more precise interventions to monitor and treat hearing loss in this vulnerable population.
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Affiliation(s)
- Hou-Kuang Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Yow-Wen Hsieh
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan
| | - Hsing-Yu Hsu
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ting-Yuan Liu
- Million-person precision medicine initiative, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Ting Zhang
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
| | - Chia-Der Lin
- Department of Otorhinolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan.
| | - Fuu-Jen Tsai
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan.
- Division of Pediatric Genetics, Children's Hospital of China Medical University, Taichung, Taiwan.
- Department of Biotechnology and Bioinformatics, Asia University, Taichung, Taiwan.
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4
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Isei MO, Girardi PA, Rodwell-Bullock J, Nehrke K, Johnson GVW. Site-specific phosphorylation of tau impacts mitochondrial function and response to stressors. J Neurochem 2024; 168:1019-1029. [PMID: 37787052 PMCID: PMC10987400 DOI: 10.1111/jnc.15975] [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: 02/17/2023] [Revised: 08/31/2023] [Accepted: 09/14/2023] [Indexed: 10/04/2023]
Abstract
Phosphorylation of tau at sites associated with Alzheimer's disease (AD) likely plays a role in the disease progression. Mitochondrial impairment, correlating with increased presence of phosphorylated tau, has been identified as a contributing factor to neurodegenerative processes in AD. However, how tau phosphorylated at specific sites impacts mitochondrial function has not been fully defined. We examined how AD-relevant phosphomimetics of tau impact selected aspects of mitochondrial biology. To mimic phosphorylation at AD-associated sites, the serine/threonine (Ser/Thr) sites in wild-type green fluorescent protein (GFP)-tagged tau (T4) were converted to glutamic acid (E) to make pseudo-phosphorylated GFP-tagged Ser-396/404 (2EC) and GFP-tagged Thr-231/Ser-235 (2EM) constructs. These constructs were expressed in immortalized mouse hippocampal neuronal cell lines, and their impact on specific mitochondrial functions and responses to stressors were measured. Phosphomimetic tau altered mitochondrial distribution. Specifically, mitochondria accumulated in the soma of cells expressing either 2EC or 2EM and neurite-like extensions in 2EC cells were shorter. Additionally, adenosine triphosphate levels were reduced in both 2EC- and 2EM-expressing cells, and reactive oxygen species (ROS) production increased in 2EC cells during oxidation of succinate when compared to T4-expressing cells. Thapsigargin reduced mitochondrial membrane potential and increased ROS production in both 2EC and 2EM cells relative to T4 cells, with no significant difference in the effects of rotenone. These results show that tau phosphorylation at specific AD-relevant epitopes negatively affects mitochondria, with the extent of dysfunction and stress response varying according to the sites of phosphorylation. Altogether, these findings show that phosphorylated tau increases mitochondrial susceptibility to stressors and extend our understanding of potential mechanisms whereby phosphorylated tau promotes mitochondria dysfunction in tauopathies, including AD.
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Affiliation(s)
- Michael O Isei
- University of Rochester, Department of Anesthesiology & Perioperative Medicine, Rochester, New York, USA
| | - Peter A Girardi
- University of Rochester, Department of Anesthesiology & Perioperative Medicine, Rochester, New York, USA
| | - Joel Rodwell-Bullock
- University of Rochester, Department of Anesthesiology & Perioperative Medicine, Rochester, New York, USA
| | - Keith Nehrke
- University of Rochester, Department of Medicine, Nephrology Division, Rochester, New York, USA
| | - Gail VW Johnson
- University of Rochester, Department of Anesthesiology & Perioperative Medicine, Rochester, New York, USA
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5
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Lee MJC, Saner NJ, Ferri A, García-Domínguez E, Broatch JR, Bishop DJ. Delineating the contribution of ageing and physical activity to changes in mitochondrial characteristics across the lifespan. Mol Aspects Med 2024; 97:101272. [PMID: 38626488 DOI: 10.1016/j.mam.2024.101272] [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: 12/28/2023] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/18/2024]
Abstract
Ageing is associated with widespread physiological changes prominent within all tissues, including skeletal muscle and the brain, which lead to a decline in physical function. To tackle the growing health and economic burdens associated with an ageing population, the concept of healthy ageing has become a major research priority. Changes in skeletal muscle mitochondrial characteristics have been suggested to make an important contribution to the reductions in skeletal muscle function with age, and age-related changes in mitochondrial content, respiratory function, morphology, and mitochondrial DNA have previously been reported. However, not all studies report changes in mitochondrial characteristics with ageing, and there is increasing evidence to suggest that physical activity (or inactivity) throughout life is a confounding factor when interpreting age-associated changes. Given that physical activity is a potent stimulus for inducing beneficial adaptations to mitochondrial characteristics, delineating the influence of physical activity on the changes in skeletal muscle that occur with age is complicated. This review aims to summarise our current understanding and knowledge gaps regarding age-related changes to mitochondrial characteristics within skeletal muscle, as well as to provide some novel insights into brain mitochondria, and to propose avenues of future research and targeted interventions. Furthermore, where possible, we incorporate discussions of the modifying effects of physical activity, exercise, and training status, to purported age-related changes in mitochondrial characteristics.
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Affiliation(s)
- Matthew J-C Lee
- The Exercise Prescription Lab (EPL), Institute for Health and Sport (IHES), Victoria University, Melbourne, Victoria, Australia
| | - Nicholas J Saner
- The Exercise Prescription Lab (EPL), Institute for Health and Sport (IHES), Victoria University, Melbourne, Victoria, Australia
| | - Alessandra Ferri
- The Exercise Prescription Lab (EPL), Institute for Health and Sport (IHES), Victoria University, Melbourne, Victoria, Australia
| | - Esther García-Domínguez
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia; Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia and CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, Valencia, Spain
| | - James R Broatch
- The Exercise Prescription Lab (EPL), Institute for Health and Sport (IHES), Victoria University, Melbourne, Victoria, Australia
| | - David J Bishop
- The Exercise Prescription Lab (EPL), Institute for Health and Sport (IHES), Victoria University, Melbourne, Victoria, Australia.
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6
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Stykel MG, Ryan SD. Network analysis of S-nitrosylated synaptic proteins demonstrates unique roles in health and disease. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119720. [PMID: 38582237 DOI: 10.1016/j.bbamcr.2024.119720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 04/08/2024]
Abstract
Nitric oxide can covalently modify cysteine thiols on target proteins to alter that protein's function in a process called S-nitrosylation (SNO). S-nitrosylation of synaptic proteins plays an integral part in neurotransmission. Here we review the function of the SNO-proteome at the synapse and whether clusters of SNO-modification may predict synaptic dysfunction associated with disease. We used a systematic search strategy to concatenate SNO-proteomic datasets from normal human or murine brain samples. Identified SNO-modified proteins were then filtered against proteins reported in the Synaptome Database, which provides a detailed and experimentally verified annotation of all known synaptic proteins. Subsequently, we performed an unbiased network analysis of all known SNO-synaptic proteins to identify clusters of SNO proteins commonly involved in biological processes or with known disease associations. The resulting SNO networks were significantly enriched in biological processes related to metabolism, whereas significant gene-disease associations were related to Schizophrenia, Alzheimer's, Parkinson's and Huntington's disease. Guided by an unbiased network analysis, the current review presents a thorough discussion of how clustered changes to the SNO-proteome influence health and disease.
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Affiliation(s)
- Morgan G Stykel
- Department of Molecular and Cellular Biology, The University of Guelph, Guelph, ON, Canada
| | - Scott D Ryan
- Department of Molecular and Cellular Biology, The University of Guelph, Guelph, ON, Canada; Hotchkiss Brain Institute, Department of Clinical Neuroscience, University of Calgary, Calgary, AB, Canada.
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Singh R, Panghal A, Jadhav K, Thakur A, Verma RK, Singh C, Goyal M, Kumar J, Namdeo AG. Recent Advances in Targeting Transition Metals (Copper, Iron, and Zinc) in Alzheimer's Disease. Mol Neurobiol 2024:10.1007/s12035-024-04256-8. [PMID: 38809370 DOI: 10.1007/s12035-024-04256-8] [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: 01/05/2024] [Accepted: 05/21/2024] [Indexed: 05/30/2024]
Abstract
Changes in the transition metal homeostasis in the brain are closely linked with Alzheimer's disease (AD), including intraneuronal iron accumulation and extracellular copper and zinc pooling in the amyloid plague. The brain copper, zinc, and iron surplus are commonly acknowledged characteristics of AD, despite disagreements among some. This has led to the theory that oxidative stress resulting from abnormal homeostasis of these transition metals may be a causative explanation behind AD. In the nervous system, the interaction of metals with proteins appears to be an essential variable in the development or suppression of neurodegeneration. Chelation treatment may be an option for treating neurodegeneration induced by transition metal ion dyshomeostasis. Some clinicians even recommend using chelating agents as an adjunct therapy for AD. The current review also looks at the therapeutic strategies that have been attempted, primarily with metal-chelating drugs. Metal buildup in the nervous system, as reported in the AD, could be the result of compensatory mechanisms designed to improve metal availability for physiological functions.
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Affiliation(s)
- Raghuraj Singh
- Pharmaceutical Nanotechnology Lab, Institutes of Nano Science and Technology (INST), Sector 81. Mohali, Punjab, 140306, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Archna Panghal
- Department of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Punjab, India
| | - Krishna Jadhav
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Ashima Thakur
- Faculty of Pharmaceutical Sciences, ICFAI University, Baddi, Distt. Solan, Himachal Pradesh, 174103, India
| | - Rahul Kumar Verma
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Charan Singh
- Department of Pharmaceutical Sciences Hemwati, Nandan Bahuguna Garhwal University (A Central University), Srinagar, Dist. Garhwal (Uttarakhand), 246174, India
| | - Manoj Goyal
- Department of Pharmaceutical Sciences Hemwati, Nandan Bahuguna Garhwal University (A Central University), Srinagar, Dist. Garhwal (Uttarakhand), 246174, India
| | - Jayant Kumar
- Department of Pharmaceutical Sciences Hemwati, Nandan Bahuguna Garhwal University (A Central University), Srinagar, Dist. Garhwal (Uttarakhand), 246174, India.
| | - Ajay G Namdeo
- Department of Pharmaceutical Sciences Hemwati, Nandan Bahuguna Garhwal University (A Central University), Srinagar, Dist. Garhwal (Uttarakhand), 246174, India
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8
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Sultana R, Butterfield DA. Protein Oxidation in Aging and Alzheimer's Disease Brain. Antioxidants (Basel) 2024; 13:574. [PMID: 38790679 PMCID: PMC11117785 DOI: 10.3390/antiox13050574] [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: 04/09/2024] [Revised: 04/28/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
Proteins are essential molecules that play crucial roles in maintaining cellular homeostasis and carrying out biological functions such as catalyzing biochemical reactions, structural proteins, immune response, etc. However, proteins also are highly susceptible to damage by reactive oxygen species (ROS) and reactive nitrogen species (RNS). In this review, we summarize the role of protein oxidation in normal aging and Alzheimer's disease (AD). The major emphasis of this review article is on the carbonylation and nitration of proteins in AD and mild cognitive impairment (MCI). The oxidatively modified proteins showed a strong correlation with the reported changes in brain structure, carbohydrate metabolism, synaptic transmission, cellular energetics, etc., of both MCI and AD brains compared to the controls. Some proteins were found to be common targets of oxidation and were observed during the early stages of AD, suggesting that those changes might be critical in the onset of symptoms and/or formation of the pathological hallmarks of AD. Further studies are required to fully elucidate the role of protein oxidation and nitration in the progression and pathogenesis of AD.
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Affiliation(s)
- Rukhsana Sultana
- Department of Neuroscience, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd., Richardson, TX 75080, USA;
| | - D. Allan Butterfield
- Department of Chemistry, and Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
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9
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Gonzales CR, Moca EN, Chandra PK, Busija DW, Rutkai I. Three-dimensional object geometry of mitochondria-associated signal: 3-D analysis pipeline for two-photon image stacks of cerebrovascular endothelial mitochondria. Am J Physiol Heart Circ Physiol 2024; 326:H1291-H1303. [PMID: 38517228 DOI: 10.1152/ajpheart.00101.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/13/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024]
Abstract
Increasing evidence indicates the role of mitochondrial and vascular dysfunction in aging and aging-associated pathologies; however, the exact mechanisms and chronological processes remain enigmatic. High-energy demand organs, such as the brain, depend on the health of their mitochondria and vasculature for the maintenance of normal functions, therefore representing vulnerable targets for aging. This methodology article describes an analysis pipeline for three-dimensional (3-D) mitochondria-associated signal geometry of two-photon image stacks of brain vasculature. The analysis methods allow the quantification of mitochondria-associated signals obtained in real time in their physiological environment. In addition, signal geometry results will allow the extrapolation of fission and fusion events under normal conditions, during aging, or in the presence of different pathological conditions, therefore contributing to our understanding of the role mitochondria play in a variety of aging-associated diseases with vascular etiology.NEW & NOTEWORTHY Analysis pipeline for 3-D mitochondria-associated signal geometry of two-photon image stacks of brain vasculature.
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Affiliation(s)
- Christopher R Gonzales
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Eric N Moca
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Partha K Chandra
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Tulane Brain Institute, Tulane University, New Orleans, Louisiana, United States
| | - David W Busija
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Tulane Brain Institute, Tulane University, New Orleans, Louisiana, United States
| | - Ibolya Rutkai
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Tulane Brain Institute, Tulane University, New Orleans, Louisiana, United States
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10
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Cerneckis J, Cai H, Shi Y. Induced pluripotent stem cells (iPSCs): molecular mechanisms of induction and applications. Signal Transduct Target Ther 2024; 9:112. [PMID: 38670977 PMCID: PMC11053163 DOI: 10.1038/s41392-024-01809-0] [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: 07/28/2023] [Revised: 03/09/2024] [Accepted: 03/17/2024] [Indexed: 04/28/2024] Open
Abstract
The induced pluripotent stem cell (iPSC) technology has transformed in vitro research and holds great promise to advance regenerative medicine. iPSCs have the capacity for an almost unlimited expansion, are amenable to genetic engineering, and can be differentiated into most somatic cell types. iPSCs have been widely applied to model human development and diseases, perform drug screening, and develop cell therapies. In this review, we outline key developments in the iPSC field and highlight the immense versatility of the iPSC technology for in vitro modeling and therapeutic applications. We begin by discussing the pivotal discoveries that revealed the potential of a somatic cell nucleus for reprogramming and led to successful generation of iPSCs. We consider the molecular mechanisms and dynamics of somatic cell reprogramming as well as the numerous methods available to induce pluripotency. Subsequently, we discuss various iPSC-based cellular models, from mono-cultures of a single cell type to complex three-dimensional organoids, and how these models can be applied to elucidate the mechanisms of human development and diseases. We use examples of neurological disorders, coronavirus disease 2019 (COVID-19), and cancer to highlight the diversity of disease-specific phenotypes that can be modeled using iPSC-derived cells. We also consider how iPSC-derived cellular models can be used in high-throughput drug screening and drug toxicity studies. Finally, we discuss the process of developing autologous and allogeneic iPSC-based cell therapies and their potential to alleviate human diseases.
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Affiliation(s)
- Jonas Cerneckis
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Hongxia Cai
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Yanhong Shi
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
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Qian W, Yuan L, Zhuge W, Gu L, Chen Y, Zhuge Q, Ni H, Lv X. Regulating Lars2 in mitochondria: A potential Alzheimer's therapy by inhibiting tau phosphorylation. Neurotherapeutics 2024; 21:e00353. [PMID: 38575503 PMCID: PMC11067343 DOI: 10.1016/j.neurot.2024.e00353] [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: 12/01/2023] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/06/2024] Open
Abstract
Driven by the scarcity of effective treatment options in clinical settings, the present study aimed to identify a new potential target for Alzheimer's disease (AD) treatment. We focused on Lars2, an enzyme synthesizing mitochondrial leucyl-tRNA, and its role in maintaining mitochondrial function. Bioinformatics analysis of human brain transcriptome data revealed downregulation of Lars2 in AD patients compared to healthy controls. During in vitro experiments, the knockdown of Lars2 in mouse neuroblastoma cells (neuro-2a cells) and primary cortical neurons led to morphological changes and decreased density in mouse hippocampal neurons. To explore the underlying mechanisms, we investigated how downregulated Lars2 expression could impede the phosphatidylinositol 3-kinase/protein kinase B (PI3K-AKT) pathway, thereby mitigating AKT's inhibitory effect on glycogen synthase kinase 3 beta (GSK3β). This led to the activation of GSK3β, causing excessive phosphorylation of Tau protein and subsequent neuronal degeneration. During in vivo experiments, knockout of lars2 in hippocampal neurons confirmed cognitive impairment through the Barnes maze test, the novel object recognition test, and nest-building experiments. Additionally, immunofluorescence assays indicated an increase in p-tau, atrophy in the hippocampal region, and a decrease in neurons following Lars2 knockout. Taken together, our findings indicate that Lars2 represents a promising therapeutic target for AD.
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Affiliation(s)
- Wenqi Qian
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China; Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Lin Yuan
- Institute of Biomedical Sciences, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Weishan Zhuge
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Liuqing Gu
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China; Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Yutian Chen
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Qichuan Zhuge
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China; Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
| | - Haoqi Ni
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China; Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
| | - Xinhuang Lv
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China; Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
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12
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Vatashchuk MV, Hurza VV, Stefanyshyn N, Bayliak MM, Gospodaryov DV, Garaschuk O, Lushchak VI. Impact of caloric restriction on oxidative stress and key glycolytic enzymes in the cerebral cortex, liver and kidney of old and middle-aged mice. Neuropharmacology 2024; 247:109859. [PMID: 38340956 DOI: 10.1016/j.neuropharm.2024.109859] [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: 10/15/2023] [Revised: 12/28/2023] [Accepted: 01/25/2024] [Indexed: 02/12/2024]
Abstract
Caloric restriction (CR) is proposed as a strategy to prevent age-related alterations like impaired glucose metabolism and intensification of oxidative stress. In this study, we examined effects of aging and CR on the activities of glycolytic enzymes and parameters of oxidative stress in the cerebral cortex, liver, and kidney of middle-aged (9 months old) and old (18 months old) C57BL6/N mice. Control middle-aged and old mice were fed ad libitum (AL groups), whereas age-matched CR groups were subjected to CR (70% of individual ad libitum food intake) for 6 and 12 months, respectively. There were no significant differences in the activities of key glycolytic and antioxidant enzymes and oxidative stress indices between the cortices of middle-aged and old AL mice. The livers and kidneys of old AL mice showed higher activity of glucose-6-phosphate dehydrogenase, an enzyme that produces NADPH in the pentose phosphate pathway, compared to those of middle-aged mice. CR regimen modulated some biochemical parameters in middle-aged but not in old mice. In particular, CR decreased oxidative stress intensity in the liver and kidney but had no effects on those parameters in the cerebral cortex. In the liver, CR led to lower activities of glycolytic enzymes, whereas its effect was the opposite in the kidney. The results suggest that during physiological aging there is no significant intensification of oxidative stress and glycolysis decline in mouse tissues during the transition from middle to old age. The CR regimen has tissue-specific effects and improves the metabolic state of middle-aged mice. This article is part of the Special Issue on "Ukrainian Neuroscience".
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Affiliation(s)
- Myroslava V Vatashchuk
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine
| | - Viktoriia V Hurza
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine
| | - Nadiia Stefanyshyn
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine
| | - Maria M Bayliak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine
| | - Dmytro V Gospodaryov
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine
| | - Olga Garaschuk
- Department of Neurophysiology, University of Tübingen, Tübingen, 72074, Germany.
| | - Volodymyr I Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine; Research and Development University, 13a Shota Rustaveli Str., Ivano-Frankivsk, 76018, Ukraine.
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13
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Siddiqui N, Sharma A, Kesharwani A, Anurag, Parihar VK. Exploring role of natural compounds in molecular alterations associated with brain ageing: A perspective towards nutrition for ageing brain. Ageing Res Rev 2024; 97:102282. [PMID: 38548242 DOI: 10.1016/j.arr.2024.102282] [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: 08/30/2023] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/12/2024]
Abstract
Aging refers to complete deterioration of physiological integrity and function. By midcentury, adults over 60 years of age and children under 15 years will begin to outnumber people in working age. This shift will bring multiple global challenges for economy, health, and society. Eventually, aging is a natural process playing a vital function in growth and development during pediatric stage, maturation during adult stage, and functional depletion. Tissues experience negative consequences with enhanced genomic instability, deregulated nutrient sensing, mitochondrial dysfunction, and decline in performance on cognitive tasks. As brain ages, its volume decreases, neurons & glia get inflamed, vasculature becomes less developed, blood pressure increases with a risk of stroke, ischemia, and cognitive deficits. Diminished cellular functions leads to progressive reduction in functional and emotional capacity with higher possibility of disease and finally death. This review overviews cellular as well as molecular aspects of aging, biological pathway related to accelerated brain aging, and strategies minimizing cognitive aging. Age-related changes include altered bioenergetics, decreased neuroplasticity and flexibility, aberrant neural activity, deregulated Ca2+ homeostasis in neurons, buildup of reactive oxygen species, and neuro-inflammation. Unprecedented progress has been achieved in recent studies, particularly in terms of how herbal or natural substances affect genetic pathways and biological functions that have been preserved through evolution. Herein, the present work provides an overview of ageing and age-related disorders and explore the molecular mechanisms that underlie therapeutic effects of herbal and natural chemicals on neuropathological signs of brain aging.
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Affiliation(s)
- Nazia Siddiqui
- Department of Pharmaceutical Technology, MIET, Meerut 250005, India
| | - Alok Sharma
- Department of Pharmaceutical Technology, MIET, Meerut 250005, India.
| | - Anuradha Kesharwani
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur 844102, India
| | - Anurag
- Department of Pharmaceutical Technology, MIET, Meerut 250005, India
| | - Vipan Kumar Parihar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur 844102, India.
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14
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Bondy SC. Mitochondrial Dysfunction as the Major Basis of Brain Aging. Biomolecules 2024; 14:402. [PMID: 38672420 PMCID: PMC11048299 DOI: 10.3390/biom14040402] [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: 02/19/2024] [Revised: 03/18/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
The changes in the properties of three biological events that occur with cerebral aging are discussed. These adverse changes already begin to develop early in mid-life and gradually become more pronounced with senescence. Essentially, they are reflections of the progressive decline in effectiveness of key processes, resulting in the deviation of essential biochemical trajectories to ineffective and ultimately harmful variants of these programs. The emphasis of this review is the major role played by the mitochondria in the transition of these three important processes toward more deleterious variants as brain aging proceeds. The immune system: the shift away from an efficient immune response to a more unfocused, continuing inflammatory condition. Such a state is both ineffective and harmful. Reactive oxygen species are important intracellular signaling systems. Additionally, microglial phagocytic activity utilizing short lived reactive oxygen species contribute to the removal of aberrant or dead cells and bacteria. These processes are transformed into an excessive, untargeted, and persistent generation of pro-oxidant free radicals (oxidative stress). The normal efficient neural transmission is modified to a state of undirected, chronic low-level excitatory activity. Each of these changes is characterized by the occurrence of continuous activity that is inefficient and diffused. The signal/noise ratio of several critical biological events is thus reduced as beneficial responses are gradually replaced by their impaired and deleterious variants.
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Affiliation(s)
- Stephen C. Bondy
- Department of Environmental & Occupational Health, University of California, Irvine, CA 92697, USA;
- Department of Medicine, University of California, Irvine, CA 92697, USA
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15
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Zhao B, Wei D, Long Q, Chen Q, Wang F, Chen L, Li Z, Li T, Ma T, Liu W, Wang L, Yang C, Zhang X, Wang P, Zhang Z. Altered synaptic currents, mitophagy, mitochondrial dynamics in Alzheimer's disease models and therapeutic potential of Dengzhan Shengmai capsules intervention. J Pharm Anal 2024; 14:348-370. [PMID: 38618251 PMCID: PMC11010627 DOI: 10.1016/j.jpha.2023.10.006] [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: 06/14/2023] [Revised: 09/25/2023] [Accepted: 10/19/2023] [Indexed: 04/16/2024] Open
Abstract
Emerging research suggests a potential association of progression of Alzheimer's disease (AD) with alterations in synaptic currents and mitochondrial dynamics. However, the specific associations between these pathological changes remain unclear. In this study, we utilized Aβ42-induced AD rats and primary neural cells as in vivo and in vitro models. The investigations included behavioural tests, brain magnetic resonance imaging (MRI), liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) analysis, Nissl staining, thioflavin-S staining, enzyme-linked immunosorbent assay, Golgi-Cox staining, transmission electron microscopy (TEM), immunofluorescence staining, proteomics, adenosine triphosphate (ATP) detection, mitochondrial membrane potential (MMP) and reactive oxygen species (ROS) assessment, mitochondrial morphology analysis, electrophysiological studies, Western blotting, and molecular docking. The results revealed changes in synaptic currents, mitophagy, and mitochondrial dynamics in the AD models. Remarkably, intervention with Dengzhan Shengmai (DZSM) capsules emerged as a pivotal element in this investigation. Aβ42-induced synaptic dysfunction was significantly mitigated by DZSM intervention, which notably amplified the frequency and amplitude of synaptic transmission. The cognitive impairment observed in AD rats was ameliorated and accompanied by robust protection against structural damage in key brain regions, including the hippocampal CA3, primary cingular cortex, prelimbic system, and dysgranular insular cortex. DZSM intervention led to increased IDE levels, augmented long-term potential (LTP) amplitude, and enhanced dendritic spine density and length. Moreover, DZSM intervention led to favourable changes in mitochondrial parameters, including ROS expression, MMP and ATP contents, and mitochondrial morphology. In conclusion, our findings delved into the realm of altered synaptic currents, mitophagy, and mitochondrial dynamics in AD, concurrently highlighting the therapeutic potential of DZSM intervention.
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Affiliation(s)
- Binbin Zhao
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
- Institute of Gerontology, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Dongfeng Wei
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Qinghua Long
- Medical School, Hubei Minzu University, Enshi, Hubei, 445000, China
| | - Qingjie Chen
- HuBei University of Science and Technology, Xianning, Hubei, 437100, China
| | - Fushun Wang
- Institute of Brain and Psychological Science, Sichuan Normal University, Chengdu, 610066, China
| | - Linlin Chen
- Key Laboratory of Traditional Chinese Medicine Resource and Compound Prescription, Ministry of Education, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Zefei Li
- Institute of Gerontology, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Tong Li
- Institute of Gerontology, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Tao Ma
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, 100078, China
| | - Wei Liu
- Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases, Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Linshuang Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Caishui Yang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
- School of Systems Science, Beijing Normal University, Beijing, 100875, China
| | - Xiaxia Zhang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
- BABRI Centre, Beijing Normal University, Beijing, 100875, China
| | - Ping Wang
- Institute of Gerontology, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Zhanjun Zhang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China
- BABRI Centre, Beijing Normal University, Beijing, 100875, China
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16
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Oroszi T, Felszeghy K, Luiten PG, Schoemaker RG, van der Zee EA, Nyakas C. Whole body vibration ameliorates anxiety-like behavior and memory functions in 30 months old senescent male rats. Heliyon 2024; 10:e26608. [PMID: 38404823 PMCID: PMC10884920 DOI: 10.1016/j.heliyon.2024.e26608] [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: 04/04/2023] [Revised: 01/22/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024] Open
Abstract
Whole body vibration (WBV) is a form of passive exercise that offers an alternative physical training to aged individuals with limitations in their physical and mental capabilities. The aim of the present study was to explore the therapeutic potential of five weeks of WBV on anxiety-like behaviors as well as learning and memory abilities in senescent thirty months old rats. Animals were exposed to 5 min vibration twice per day, five times per week during the five consecutive weeks. Pseudo WBV treated animals served as controls. After five weeks of WBV treatment, animals were tested for anxiety-like behavior by the open field test and for spatial and object memory functions by the novel and spatial object recognition tests, respectively. As a result, anxiety-like and exploratory behaviors were significantly improved in the WBV treated group compared to the pseudo WBV group. Furthermore, WBV treatment increased discrimination performance in both spatial and object memory function testing. These results indicate that WBV treatment in thirty months old rats seems to have comparable beneficial effects on age-related emotional and cognitive performance as what has been reported in younger age groups.
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Affiliation(s)
- Tamás Oroszi
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
- Research Center for Molecular Exercise Science, Hungarian University of Sports Science, Budapest, Hungary
| | - Klára Felszeghy
- Research Center for Molecular Exercise Science, Hungarian University of Sports Science, Budapest, Hungary
- Department of Morphology and Physiology, Health Science Faculty, Semmelweis University, Budapest, Hungary
| | - Paul G.M. Luiten
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Regien G. Schoemaker
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Eddy A. van der Zee
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Csaba Nyakas
- Research Center for Molecular Exercise Science, Hungarian University of Sports Science, Budapest, Hungary
- Department of Morphology and Physiology, Health Science Faculty, Semmelweis University, Budapest, Hungary
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17
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Pereira PA, Tavares M, Laires M, Mota B, Madeira MD, Paula-Barbosa MM, Cardoso A. Effects of Aging and Nerve Growth Factor on Neuropeptide Expression and Cholinergic Innervation of the Rat Basolateral Amygdala. BIOLOGY 2024; 13:155. [PMID: 38534426 DOI: 10.3390/biology13030155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/28/2024]
Abstract
The basolateral amygdala (BLA) contains interneurons that express neuropeptide Y (NPY) and vasoactive intestinal polypeptide (VIP), both of which are involved in the regulation of functions and behaviors that undergo deterioration with aging. There is considerable evidence that, in some brain areas, the expression of NPY and VIP might be modulated by acetylcholine. Importantly, the BLA is one of the brain regions that has one of the densest cholinergic innervations, which arise mainly from the basal forebrain cholinergic neurons. These cholinergic neurons depend on nerve growth factor (NGF) for their survival, connectivity, and function. Thus, in this study, we sought to determine if aging alters the densities of NPY- and VIP-positive neurons and cholinergic varicosities in the BLA and, in the affirmative, if those changes might rely on insufficient trophic support provided by NGF. The number of NPY-positive neurons was significantly reduced in aged rats, whereas the number of VIP-immunoreactive neurons was unaltered. The decreased NPY expression was fully reversed by the infusion of NGF in the lateral ventricle. The density of cholinergic varicosities was similar in adult and old rats. On the other hand, the density of cholinergic varicosities is significantly higher in old rats treated with NGF than in adult and old rats. Our results indicate a dissimilar resistance of different populations of BLA interneurons to aging. Furthermore, the present data also show that the BLA cholinergic innervation is particularly resistant to aging effects. Finally, our results also show that the reduced NPY expression in the BLA of aged rats can be related to changes in the NGF neurotrophic support.
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Affiliation(s)
- Pedro A Pereira
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- NeuroGen Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Dr. Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Marta Tavares
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Miguel Laires
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Bárbara Mota
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Maria Dulce Madeira
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- NeuroGen Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Dr. Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Manuel M Paula-Barbosa
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Armando Cardoso
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- NeuroGen Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Dr. Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
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18
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Choudhury D, Rong N, Senthil Kumar HV, Swedick S, Samuel RZ, Mehrotra P, Toftegaard J, Rajabian N, Thiyagarajan R, Podder AK, Wu Y, Shahini S, Seldeen KL, Troen B, Lei P, Andreadis ST. Proline restores mitochondrial function and reverses aging hallmarks in senescent cells. Cell Rep 2024; 43:113738. [PMID: 38354087 DOI: 10.1016/j.celrep.2024.113738] [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: 06/12/2023] [Revised: 12/04/2023] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Mitochondrial dysfunction is a hallmark of cellular senescence, with the loss of mitochondrial function identified as a potential causal factor contributing to senescence-associated decline in cellular functions. Our recent findings revealed that ectopic expression of the pluripotency transcription factor NANOG rejuvenates dysfunctional mitochondria of senescent cells by rewiring metabolic pathways. In this study, we report that NANOG restores the expression of key enzymes, PYCR1 and PYCR2, in the proline biosynthesis pathway. Additionally, senescent mesenchymal stem cells manifest severe mitochondrial respiratory impairment, which is alleviated through proline supplementation. Proline induces mitophagy by activating AMP-activated protein kinase α and upregulating Parkin expression, enhancing mitochondrial clearance and ultimately restoring cell metabolism. Notably, proline treatment also mitigates several aging hallmarks, including DNA damage, senescence-associated β-galactosidase, inflammatory cytokine expressions, and impaired myogenic differentiation capacity. Overall, this study highlights the role of proline in mitophagy and its potential in reversing senescence-associated mitochondrial dysfunction and aging hallmarks.
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Affiliation(s)
- Debanik Choudhury
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Na Rong
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | | | - Sydney Swedick
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Ronel Z Samuel
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Pihu Mehrotra
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - John Toftegaard
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Ramkumar Thiyagarajan
- Department of Medicine, Division of Geriatrics and Palliative Medicine, Buffalo, NY 14203, USA
| | - Ashis K Podder
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Yulun Wu
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Shahryar Shahini
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Kenneth L Seldeen
- Department of Medicine, Division of Geriatrics and Palliative Medicine, Buffalo, NY 14203, USA
| | - Bruce Troen
- Department of Medicine, Division of Geriatrics and Palliative Medicine, Buffalo, NY 14203, USA
| | - Pedro Lei
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Stelios T Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA; Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260, USA; Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, Buffalo, NY 14263, USA; Center for Cell, Gene and Tissue Engineering (CGTE), University at Buffalo, Buffalo, NY 14260, USA.
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19
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Bu L, Wang C, Bai J, Song J, Zhang Y, Chen H, Suo H. Gut microbiome-based therapies for alleviating cognitive impairment: state of the field, limitations, and future perspectives. Food Funct 2024; 15:1116-1134. [PMID: 38224464 DOI: 10.1039/d3fo02307a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Cognitive impairment (CI) is a multifaceted neurological condition that can trigger negative emotions and a range of concurrent symptoms, imposing significant public health and economic burdens on society. Therefore, it is imperative to discover a remedy for CI. Nevertheless, the mechanisms behind the onset of this disease are multifactorial, which makes the search for effective amelioration difficult and complex, hindering the search for effective measures. Intriguingly, preclinical research indicates that gut microbiota by influencing brain function, plays an important role in the progression of CI. Furthermore, numerous preclinical studies have highlighted the potential of probiotics, prebiotics, fecal microbiota transplantation (FMT), and diet in modulating the gut microbiota, thereby ameliorating CI symptoms. This review provides a comprehensive evaluation of CI pathogenesis, emphasizing the contribution of gut microbiota disorders to CI development. It also summarizes and discusses current strategies and mechanisms centered on the synergistic role of gut microbiota modulation in the microbiota-gut-brain axis in CI development. Finally, problems with existing approaches are contemplated and the development of microbial modulation strategies as therapeutic approaches to promote and restore brain cognition is discussed. Further research considerations and directions are highlighted to provide ideas for future CI prevention and treatment strategies.
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Affiliation(s)
- Linli Bu
- College of Food Science, Southwest University, Chongqing 400715, China.
- Modern "Chuan Cai Yu Wei" Food Industry Innovation Research Institute, Chongqing 400715, China
| | - Chen Wang
- College of Food Science, Southwest University, Chongqing 400715, China.
- Modern "Chuan Cai Yu Wei" Food Industry Innovation Research Institute, Chongqing 400715, China
| | - Junying Bai
- Citrus Research Institute, Southwest University, Chongqing 400715, China
| | - Jiajia Song
- College of Food Science, Southwest University, Chongqing 400715, China.
- Modern "Chuan Cai Yu Wei" Food Industry Innovation Research Institute, Chongqing 400715, China
| | - Yuhong Zhang
- Institute of Food Sciences and Technology, Tibet Academy of Agricultural and Animal Husbandry Sciences, Xizang 850000, China
| | - Hongyu Chen
- College of Food Science, Southwest University, Chongqing 400715, China.
- Modern "Chuan Cai Yu Wei" Food Industry Innovation Research Institute, Chongqing 400715, China
| | - Huayi Suo
- College of Food Science, Southwest University, Chongqing 400715, China.
- Modern "Chuan Cai Yu Wei" Food Industry Innovation Research Institute, Chongqing 400715, China
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20
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Fišar Z, Hroudová J. CoQ 10 and Mitochondrial Dysfunction in Alzheimer's Disease. Antioxidants (Basel) 2024; 13:191. [PMID: 38397789 PMCID: PMC10885987 DOI: 10.3390/antiox13020191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
The progress in understanding the pathogenesis and treatment of Alzheimer's disease (AD) is based on the recognition of the primary causes of the disease, which can be deduced from the knowledge of risk factors and biomarkers measurable in the early stages of the disease. Insights into the risk factors and the time course of biomarker abnormalities point to a role for the connection of amyloid beta (Aβ) pathology, tau pathology, mitochondrial dysfunction, and oxidative stress in the onset and development of AD. Coenzyme Q10 (CoQ10) is a lipid antioxidant and electron transporter in the mitochondrial electron transport system. The availability and activity of CoQ10 is crucial for proper mitochondrial function and cellular bioenergetics. Based on the mitochondrial hypothesis of AD and the hypothesis of oxidative stress, the regulation of the efficiency of the oxidative phosphorylation system by means of CoQ10 can be considered promising in restoring the mitochondrial function impaired in AD, or in preventing the onset of mitochondrial dysfunction and the development of amyloid and tau pathology in AD. This review summarizes the knowledge on the pathophysiology of AD, in which CoQ10 may play a significant role, with the aim of evaluating the perspective of the pharmacotherapy of AD with CoQ10 and its analogues.
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Affiliation(s)
- Zdeněk Fišar
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 11, 120 00 Prague, Czech Republic;
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21
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Zhang J, Li D, He K, Liu Q, Xie Z. Aging-induced YTHDF aggregates impair mitochondrial function by trapping mitochondrial RNAs and suppressing their expression in the brain. Protein Cell 2024; 15:149-155. [PMID: 37402638 PMCID: PMC10833457 DOI: 10.1093/procel/pwad041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 06/25/2023] [Indexed: 07/06/2023] Open
Affiliation(s)
- Juan Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Dingfeng Li
- Division of Life Sciences and Medicine, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Keqiang He
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Qiang Liu
- Division of Life Sciences and Medicine, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
- Anhui Province Key Laboratory of Biomedical Aging Research, University of Science and Technology of China, Hefei 230026, China
- Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Zhongwen Xie
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Sciences and Technology, Anhui Agricultural University, Hefei 230036, China
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Amiri H, Javid H, Hashemi SF, Reihani A, Esparham A, Hashemy SI. The protective effects of hesperidin as an antioxidant against quinolinic acid-induced toxicity on oligodendroglia cells: An in vitro study. Mult Scler Relat Disord 2024; 82:105401. [PMID: 38154346 DOI: 10.1016/j.msard.2023.105401] [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: 07/09/2023] [Revised: 12/13/2023] [Accepted: 12/21/2023] [Indexed: 12/30/2023]
Abstract
INTRODUCTION Multiple sclerosis (MS) is a complex central nervous system disorder, marked by neurodegenerative and inflammatory processes, where overproduction of reactive oxygen species (ROS) is a key factor in demyelination and neurodegeneration. The current study aims to investigate the effect of hesperidin and Quinolinic acid (QA) on ROS and antioxidant levels, and cell viability of OLN-93 cells. METHODS OLN-93 cell lines were treated with hesperidin and QA. OLN-93 cells were cultured in Dulbecco's modified Eagle's medium under controlled conditions. Cell viability assays were performed using resazurin to assess the toxicity of hesperidin and QA. Additionally, ROS levels were measured using DCFDA, and malondialdehyde (MDA) levels were determined to evaluate oxidative stress. Superoxide dismutase (SOD) activity and cell viability were assessed by trypan blue staining after exposure to hesperidin and QA. RESULTS The results of the current study showed that co-administration of 8 mM QA with 50, 100, and 200 μM hesperidin significantly reduced both ROS and MDA levels, demonstrating a substantial attenuation in comparison to the elevated ROS and MDA levels induced by 8 mM QA (p-value < 0.01). Furthermore, 8 mM QA + 50, 100, and 200 μM hesperidin significantly increased SOD levels compared with QA alone (p-value < 0.01). In addition, treatment of OLN cells with 8 mM QA + 50, 100, and 200 μM hesperidin led to higher cell viability compared to QA alone (p value <0.0001). CONCLUSION The current study demonstrated the antioxidant effect of hesperidin on OLN-93 cells suggesting new insights into the clinical application of hesperidin as an effective treatment for patients with MS. Future in vivo studies, focusing on cellular mechanisms are recommended.
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Affiliation(s)
- Hamed Amiri
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Javid
- Department of Medical Laboratory Sciences, Varastegan Institute for Medical Sciences, Mashhad, Iran; Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyedeh Fatemeh Hashemi
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirali Reihani
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Esparham
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Isaac Hashemy
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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23
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Apparoo Y, Wei Phan C, Rani Kuppusamy U, Chan EWC. Potential role of ergothioneine rich mushroom as anti-aging candidate through elimination of neuronal senescent cells. Brain Res 2024; 1824:148693. [PMID: 38036238 DOI: 10.1016/j.brainres.2023.148693] [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: 09/07/2023] [Revised: 11/17/2023] [Accepted: 11/27/2023] [Indexed: 12/02/2023]
Abstract
Oxidative stress can upset the antioxidant balance and cause accelerated aging including neurodegenerative diseases and decline in physiological function. Therefore, an antioxidant-rich diet plays a crucial role in healthy aging. This study aimed to identify and quantify mushrooms with the highest ergothioneine content through HPLC analysis and evaluate their anti-aging potential as a natural antioxidant and antisenescence in HT22 cells. Among the 14 evaluated mushroom species, Lentinula edodes (LE), shiitake mushroom contains the highest ergothioneine content and hence was used for the in-vitro studies. The cells were preincubated with ethanolic extract of ergothioneine-rich mushroom and the equimolar concentration of EGT on t-BHP-induced senescence HT22 cells. The extract was analyzed for its free radical scavenging properties using DPPH and ABTS methods. Then, the neuroprotective effect was conducted by measuring the cell viability using MTT. Senescence-associated markers and ROS staining were also analyzed. Our results revealed that a low dose of t-BHP reduces cell viability and induces senescence in HT22 cells as determined through β-galactosidase staining and expressions of P16INK4a, P21CIPL which are the markers of cellular senescence. However, the pretreatment with ethanolic extract of LE for 8 h significantly improved the cell viability, reversed the t-BHP-induced cellular senescence in the neuronal cells, and reduced the reactive oxygen species visualized through DCFH-DA staining. These results suggest that ergothioneine-rich mushroom is a potential candidate for anti-aging exploration through the elimination of senescent cells.
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Affiliation(s)
- Yasaaswini Apparoo
- Department of Pharmaceutical Life Sciences, Faculty of Pharmacy, Universiti Malaya 50603, Kuala Lumpur, Malaysia
| | - Chia Wei Phan
- Department of Pharmaceutical Life Sciences, Faculty of Pharmacy, Universiti Malaya 50603, Kuala Lumpur, Malaysia; Mushroom Research Centre, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Umah Rani Kuppusamy
- Department of Biomedical Science, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Eric Wei Chiang Chan
- Department of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, 56000 Kuala Lumpur, Malaysia
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24
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Karakaya E, Oleinik N, Edwards J, Tomberlin J, Barker RB, Berber B, Ericsson M, Alsudani H, Ergul A, Beyaz S, Lemasters JJ, Ogretmen B, Albayram O. p17/C18-ceramide-mediated mitophagy is an endogenous neuroprotective response in preclinical and clinical brain injury. PNAS NEXUS 2024; 3:pgae018. [PMID: 38328780 PMCID: PMC10847724 DOI: 10.1093/pnasnexus/pgae018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 01/10/2024] [Indexed: 02/09/2024]
Abstract
Repeat concussions (or repetitive mild traumatic brain injury [rmTBI]) are complex pathological processes consisting of a primary insult and long-term secondary complications and are also a prerequisite for chronic traumatic encephalopathy (CTE). Recent evidence implies a significant role of autophagy-mediated dysfunctional mitochondrial clearance, mitophagy, in the cascade of secondary deleterious events resulting from TBI. C18-ceramide, a bioactive sphingolipid produced in response to cell stress and damage, and its synthesizing enzyme (CerS1) are precursors to selective stress-mediated mitophagy. A transporter, p17, mediates the trafficking of CerS1, induces C18-ceramide synthesis in the mitochondrial membrane, and acts as an elimination signal in cell survival. Whether p17-mediated mitophagy occurs in the brain and plays a causal role in mitochondrial quality control in secondary disease development after rmTBI are unknown. Using a novel repetitive less-than-mild TBI (rlmTBI) injury paradigm, ablation of mitochondrial p17/C18-ceramide trafficking in p17 knockout (KO) mice results in a loss of C18-ceramide-induced mitophagy, which contributes to susceptibility and recovery from long-term secondary complications associated with rlmTBI. Using a ceramide analog with lipid-selenium conjugate drug, LCL768 restored mitophagy and reduced long-term secondary complications, improving cognitive deficits in rlmTBI-induced p17KO mice. We obtained a significant reduction of p17 expression and a considerable decrease of CerS1 and C18-ceramide levels in cortical mitochondria of CTE human brains compared with age-matched control brains. These data demonstrated that p17/C18-ceramide trafficking is an endogenous neuroprotective mitochondrial stress response following rlmTBI, thus suggesting a novel prospective strategy to interrupt the CTE consequences of concussive TBI.
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Affiliation(s)
- Eda Karakaya
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Natalia Oleinik
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jazlyn Edwards
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jensen Tomberlin
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Randy Bent Barker
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Burak Berber
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
- Department of Biology, Eskisehir Technical University, Tepebasi/Eskisehir 26555, Turkey
| | - Maria Ericsson
- Electron Microscopy Laboratory, Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Habeeb Alsudani
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA
- College of Science, University of Basrah, Basra 61004, Iraq
| | - Adviye Ergul
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
- Ralph H. Jackson Department of Veterans Affairs Medical Center, Charleston, SC 29425, USA
| | - Semir Beyaz
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA
| | - John J Lemasters
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Besim Ogretmen
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Onder Albayram
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
- Ralph H. Jackson Department of Veterans Affairs Medical Center, Charleston, SC 29425, USA
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
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25
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Francis JS, Nguyen Q, Markov V, Leone P. Over-expression of N-acetylaspartate synthase exacerbates pathological energetic deficit and accelerates cognitive decline in the 5xFAD mouse. J Neurochem 2024; 168:69-82. [PMID: 38178803 DOI: 10.1111/jnc.16044] [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: 09/14/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/06/2024]
Abstract
N-acetylaspartate (NAA) is an abundant central nervous system amino acid derivative that is tightly coupled to mitochondria and energy metabolism in neurons. A reduced NAA signature is a prominent early pathological biomarker in multiple neurodegenerative diseases and becomes progressively more pronounced as disease advances. Because NAA synthesis requires aspartate drawn directly from mitochondria, we argued that this process is in direct competition with oxidative phosphorylation for substrate and that sustained high levels of NAA synthesis would be incompatible with pathological energy crisis. We show here that over-expression of the rate-limiting NAA synthetic enzyme in the hippocampus of the 5x familial Alzheimer's disease (5xFAD) mouse results in an exaggerated pathological ATP deficit and accelerated cognitive decline. Over-expression of NAA synthase did not increase amyloid burden or result in cell loss but did significantly deplete mitochondrial aspartate and impair the ability of mitochondria to oxidize glutamate for adenosine triphosphate (ATP) synthesis. These results define NAA as a sink for energetic substrate and suggest initial pathological reductions in NAA are part of a response to energetic crisis designed to preserve substrate bioavailability for mitochondrial ATP synthesis.
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Affiliation(s)
- Jeremy S Francis
- Cell & Gene Therapy Center, Department of Cell Biology and Neuroscience, Rowan University School of Osteopathic Medicine, Stratford, New Jersey, USA
| | - Quy Nguyen
- Cell & Gene Therapy Center, Department of Cell Biology and Neuroscience, Rowan University School of Osteopathic Medicine, Stratford, New Jersey, USA
| | - Vladimir Markov
- Cell & Gene Therapy Center, Department of Cell Biology and Neuroscience, Rowan University School of Osteopathic Medicine, Stratford, New Jersey, USA
| | - Paola Leone
- Cell & Gene Therapy Center, Department of Cell Biology and Neuroscience, Rowan University School of Osteopathic Medicine, Stratford, New Jersey, USA
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26
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Fairley LH, Grimm A, Herff SA, Eckert A. Translocator protein (TSPO) ligands attenuate mitophagy deficits in the SH-SY5Y cellular model of Alzheimer's disease via the autophagy adaptor P62. Biochimie 2024:S0300-9084(24)00030-0. [PMID: 38280505 DOI: 10.1016/j.biochi.2024.01.012] [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: 10/05/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 01/29/2024]
Abstract
Mitochondrial dysfunction has been widely implicated in the pathogenesis of Alzheimer's disease (AD), with accumulation of damaged and dysfunctional mitochondria occurring early in the disease. Mitophagy, which governs mitochondrial turnover and quality control, is impaired in the AD brain, and strategies aimed at enhancing mitophagy have been identified as promising therapeutic targets. The translocator protein (TSPO) is an outer mitochondrial membrane protein that is upregulated in AD, and ligands targeting TSPO have been shown to exert neuroprotective effects in mouse models of AD. However, whether TSPO ligands modulate mitophagy in AD has not been explored. Here, we provide evidence that the TSPO-specific ligands Ro5-4864 and XBD173 attenuate mitophagy deficits and mitochondrial fragmentation in a cellular model of AD overexpressing the human amyloid precursor protein (APP). Ro5-4864 and XBD173 appear to enhance mitophagy via modulation of the autophagic cargo receptor P62/SQSTM1, in the absence of an effect on PARK2, PINK1, or LC3 level. Taken together, these findings indicate that TSPO ligands may be promising therapeutic agents for ameliorating mitophagy deficits in AD.
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Affiliation(s)
- Lauren H Fairley
- Research Cluster, Molecular & Cognitive Neuroscience, Neurobiology Laboratory for Brain Aging and Mental Health, University of Basel, Basel, Switzerland.
| | - Amandine Grimm
- Research Cluster, Molecular & Cognitive Neuroscience, Neurobiology Laboratory for Brain Aging and Mental Health, University of Basel, Basel, Switzerland; Psychiatric University Clinics, Basel, Switzerland
| | - Steffen A Herff
- The MARCS Institute for Brain, Behaviour and Development, Western Sydney University, Australia
| | - Anne Eckert
- Research Cluster, Molecular & Cognitive Neuroscience, Neurobiology Laboratory for Brain Aging and Mental Health, University of Basel, Basel, Switzerland; Psychiatric University Clinics, Basel, Switzerland
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27
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Fernández-Albarral JA, Ramírez AI, de Hoz R, Matamoros JA, Salobrar-García E, Elvira-Hurtado L, López-Cuenca I, Sánchez-Puebla L, Salazar JJ, Ramírez JM. Glaucoma: from pathogenic mechanisms to retinal glial cell response to damage. Front Cell Neurosci 2024; 18:1354569. [PMID: 38333055 PMCID: PMC10850296 DOI: 10.3389/fncel.2024.1354569] [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: 12/12/2023] [Accepted: 01/10/2024] [Indexed: 02/10/2024] Open
Abstract
Glaucoma is a neurodegenerative disease of the retina characterized by the irreversible loss of retinal ganglion cells (RGCs) leading to visual loss. Degeneration of RGCs and loss of their axons, as well as damage and remodeling of the lamina cribrosa are the main events in the pathogenesis of glaucoma. Different molecular pathways are involved in RGC death, which are triggered and exacerbated as a consequence of a number of risk factors such as elevated intraocular pressure (IOP), age, ocular biomechanics, or low ocular perfusion pressure. Increased IOP is one of the most important risk factors associated with this pathology and the only one for which treatment is currently available, nevertheless, on many cases the progression of the disease continues, despite IOP control. Thus, the IOP elevation is not the only trigger of glaucomatous damage, showing the evidence that other factors can induce RGCs death in this pathology, would be involved in the advance of glaucomatous neurodegeneration. The underlying mechanisms driving the neurodegenerative process in glaucoma include ischemia/hypoxia, mitochondrial dysfunction, oxidative stress and neuroinflammation. In glaucoma, like as other neurodegenerative disorders, the immune system is involved and immunoregulation is conducted mainly by glial cells, microglia, astrocytes, and Müller cells. The increase in IOP produces the activation of glial cells in the retinal tissue. Chronic activation of glial cells in glaucoma may provoke a proinflammatory state at the retinal level inducing blood retinal barrier disruption and RGCs death. The modulation of the immune response in glaucoma as well as the activation of glial cells constitute an interesting new approach in the treatment of glaucoma.
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Affiliation(s)
- Jose A. Fernández-Albarral
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
| | - Ana I. Ramírez
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Rosa de Hoz
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - José A. Matamoros
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Elena Salobrar-García
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Lorena Elvira-Hurtado
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
| | - Inés López-Cuenca
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Lidia Sánchez-Puebla
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Juan J. Salazar
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - José M. Ramírez
- Ramon Castroviejo Ophthalmological Research Institute, Complutense University of Madrid (UCM), Grupo UCM 920105, IdISSC, Madrid, Spain
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Complutense University of Madrid, Madrid, Spain
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28
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Calvo-Rodriguez M, Kharitonova EK, Snyder AC, Hou SS, Sanchez-Mico MV, Das S, Fan Z, Shirani H, Nilsson KPR, Serrano-Pozo A, Bacskai BJ. Real-time imaging of mitochondrial redox reveals increased mitochondrial oxidative stress associated with amyloid β aggregates in vivo in a mouse model of Alzheimer's disease. Mol Neurodegener 2024; 19:6. [PMID: 38238819 PMCID: PMC10797952 DOI: 10.1186/s13024-024-00702-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 01/05/2024] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Reactive oxidative stress is a critical player in the amyloid beta (Aβ) toxicity that contributes to neurodegeneration in Alzheimer's disease (AD). Damaged mitochondria are one of the main sources of reactive oxygen species and accumulate in Aβ plaque-associated dystrophic neurites in the AD brain. Although Aβ causes neuronal mitochondria reactive oxidative stress in vitro, this has never been directly observed in vivo in the living mouse brain. Here, we tested for the first time whether Aβ plaques and soluble Aβ oligomers induce mitochondrial oxidative stress in surrounding neurons in vivo, and whether this neurotoxic effect can be abrogated using mitochondrial-targeted antioxidants. METHODS We expressed a genetically encoded fluorescent ratiometric mitochondria-targeted reporter of oxidative stress in mouse models of the disease and performed intravital multiphoton microscopy of neuronal mitochondria and Aβ plaques. RESULTS For the first time, we demonstrated by direct observation in the living mouse brain exacerbated mitochondrial oxidative stress in neurons after both Aβ plaque deposition and direct application of soluble oligomeric Aβ onto the brain, and determined the most likely pathological sequence of events leading to oxidative stress in vivo. Oxidative stress could be inhibited by both blocking calcium influx into mitochondria and treating with the mitochondria-targeted antioxidant SS31. Remarkably, the latter ameliorated plaque-associated dystrophic neurites without impacting Aβ plaque burden. CONCLUSIONS Considering these results, combination of mitochondria-targeted compounds with other anti-amyloid beta or anti-tau therapies hold promise as neuroprotective drugs for the prevention and/or treatment of AD.
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Affiliation(s)
- Maria Calvo-Rodriguez
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
- Present address: Foundational Neuroscience Center, AbbVie Inc, Cambridge, MA, USA
| | - Elizabeth K Kharitonova
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Austin C Snyder
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Steven S Hou
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Maria Virtudes Sanchez-Mico
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Sudeshna Das
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Zhanyun Fan
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Hamid Shirani
- Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - K Peter R Nilsson
- Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - Alberto Serrano-Pozo
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA
| | - Brian J Bacskai
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, 114, 16Th St, Charlestown, MA, 02129, USA.
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Li Y, Berliocchi L, Li Z, Rasmussen LJ. Interactions between mitochondrial dysfunction and other hallmarks of aging: Paving a path toward interventions that promote healthy old age. Aging Cell 2024; 23:e13942. [PMID: 37497653 PMCID: PMC10776122 DOI: 10.1111/acel.13942] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/28/2023] Open
Abstract
Current research on human aging has largely been guided by the milestone paper "hallmarks of aging," which were first proposed in the seminal 2013 paper by Lopez-Otin et al. Most studies have focused on one aging hallmark at a time, asking whether the underlying molecular perturbations are sufficient to drive the aging process and its associated phenotypes. More recently, researchers have begun to investigate whether aging phenotypes are driven by concurrent perturbations in molecular pathways linked to not one but to multiple hallmarks of aging and whether they present different patterns in organs and systems over time. Indeed, preliminary results suggest that more complex interactions between aging hallmarks must be considered and addressed, if we are to develop interventions that successfully promote healthy aging and/or delay aging-associated dysfunction and diseases. Here, we summarize some of the latest work and views on the interplay between hallmarks of aging, with a specific focus on mitochondrial dysfunction. Indeed, this represents a significant example of the complex crosstalk between hallmarks of aging and of the effects that an intervention targeted to a specific hallmark may have on the others. A better knowledge of these interconnections, of their cause-effect relationships, of their spatial and temporal sequence, will be very beneficial for the whole aging research field and for the identification of effective interventions in promoting healthy old age.
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Affiliation(s)
- Yuan Li
- Department of Cellular and Molecular Medicine, Center for Healthy AgingUniversity of CopenhagenCopenhagenDenmark
| | - Laura Berliocchi
- Department of Cellular and Molecular Medicine, Center for Healthy AgingUniversity of CopenhagenCopenhagenDenmark
- Department of Health SciencesUniversity Magna Græcia of CatanzaroCatanzaroItaly
| | - Zhiquan Li
- Department of Cellular and Molecular Medicine, Center for Healthy AgingUniversity of CopenhagenCopenhagenDenmark
| | - Lene Juel Rasmussen
- Department of Cellular and Molecular Medicine, Center for Healthy AgingUniversity of CopenhagenCopenhagenDenmark
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30
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Bandiwadekar A, Khot KB, Gopan G, Jose J. Microneedles: A Versatile Drug Delivery Carrier for Phytobioactive Compounds as a Therapeutic Modulator for Targeting Mitochondrial Dysfunction in the Management of Neurodegenerative Diseases. Curr Neuropharmacol 2024; 22:1110-1128. [PMID: 36237157 DOI: 10.2174/1570159x20666221012142247] [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: 05/16/2022] [Revised: 09/29/2022] [Accepted: 10/06/2022] [Indexed: 11/22/2022] Open
Abstract
Neurodegenerative disease (ND) is the fourth leading cause of death worldwide, with limited symptomatic therapies. Mitochondrial dysfunction is a major risk factor in the progression of ND, and it-increases the generation of reactive oxygen species (ROS). Overexposure to these ROS induces apoptotic changes leading to neuronal cell death. Many studies have shown the prominent effect of phytobioactive compounds in managing mitochondrial dysfunctions associated with ND, mainly due to their antioxidant properties. The drug delivery to the brain is limited due to the presence of the blood-brain barrier (BBB), but effective drug concentration needs to reach the brain for the therapeutic action. Therefore, developing safe and effective strategies to enhance drug entry in the brain is required to establish ND's treatment. The microneedle-based drug delivery system is one of the effective non-invasive techniques for drug delivery through the transdermal route. Microneedles are micronsized drug delivery needles that are self-administrable. It can penetrate through the stratum corneum skin layer without hitting pain receptors, allowing the phytobioactive compounds to be released directly into systemic circulation in a controlled manner. With all of the principles mentioned above, this review discusses microneedles as a versatile drug delivery carrier for the phytoactive compounds as a therapeutic potentiating agent for targeting mitochondrial dysfunction for the management of ND.
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Affiliation(s)
- Akshay Bandiwadekar
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
| | - Kartik Bhairu Khot
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
| | - Gopika Gopan
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
| | - Jobin Jose
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
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Fan W, Zhou J. Icariside II protects dopaminergic neurons from 1‑methyl‑4‑phenylpyridinium‑induced neurotoxicity by downregulating HDAC2 to restore mitochondrial function. Exp Ther Med 2024; 27:40. [PMID: 38125349 PMCID: PMC10731403 DOI: 10.3892/etm.2023.12328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/18/2023] [Indexed: 12/23/2023] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease after Alzheimer's disease (AD). Icariside II (ICS II) is known to confer notable therapeutic effects against a variety of neurodegenerative diseases, such as AD. Therefore, the present study aimed to evaluate the possible effects of ICS II on 1-methyl-4-phenylpyridinium (MPP+)-induced SK-N-SH cell injury, in addition to understanding the underlying mechanism of action. The MPP+-induced SK-N-SH cell model was used to simulate PD in vitro. The viability and mitochondrial membrane potential of SK-N-SH cells were detected by MTT assay and JC-1 staining, respectively. Lactate dehydrogenase (LDH) release, ATP levels and complex I activity in treated SK-N-SH cells were measured using LDH activity, ATP and Complex I assay kits, respectively. The protein expression levels of histone deacetylase 2 (HDAC2) and γ-H2A histone family member X and the copy number of mitochondrial DNA were measured by western blotting or reverse transcription-quantitative PCR, respectively. Autodock 4.2 was used to predict the molecular docking site of ICS II on HDAC2. The results of the present study demonstrated that ICS II mitigated SK-N-SH cytotoxicity induced by MPP+. Specifically, ICS II alleviated DNA damage and restored mitochondrial function in SK-N-SH cells treated with MPP+. In addition, ICS II reduced the HDAC2 protein expression levels in MPP+-induced SK-N-SH cells. However, overexpression of HDAC2 reversed the protective effects of ICS II on DNA damage and mitochondrial dysfunction in MPP+-induced SK-N-SH cells. In conclusion, the results of the present study suggest that ICS II can protect dopaminergic neurons from MPP+-induced neurotoxicity by downregulating HDAC2 expression to restore mitochondrial function.
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Affiliation(s)
- Wenbo Fan
- Pharmaceutical Technology Department, Chemical Engineering School, Jiuquan Vocational Technical College, Jiuquan, Gansu 735000, P.R. China
| | - Jianwu Zhou
- Medical Laboratory of Qinghai Provincial People's Hospital, Xining, Qinghai 810000, P.R. China
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Bame X, Hill RA. Mitochondrial network reorganization and transient expansion during oligodendrocyte generation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.05.570104. [PMID: 38106204 PMCID: PMC10723275 DOI: 10.1101/2023.12.05.570104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Oligodendrocyte precursor cells (OPCs) give rise to myelinating oligodendrocytes of the central nervous system. This process persists throughout life and is essential for recovery from neurodegeneration. To better understand the cellular checkpoints that occur during oligodendrogenesis, we determined the mitochondrial distribution and morphometrics across the oligodendrocyte lineage in mouse and human cerebral cortex. During oligodendrocyte generation, mitochondrial content expanded concurrently with a change in subcellular partitioning towards the distal processes. These changes were followed by an abrupt loss of mitochondria in the oligodendrocyte processes and myelin, coinciding with sheath compaction. This reorganization and extensive expansion and depletion took 3 days. Oligodendrocyte mitochondria were stationary over days while OPC mitochondrial motility was modulated by animal arousal state within minutes. Aged OPCs also displayed decreased mitochondrial size, content, and motility. Thus, mitochondrial dynamics are linked to oligodendrocyte generation, dynamically modified by their local microenvironment, and altered in the aging brain.
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Affiliation(s)
- Xhoela Bame
- Department of Biological Sciences, Dartmouth College, Hanover, NH, USA
| | - Robert A Hill
- Department of Biological Sciences, Dartmouth College, Hanover, NH, USA
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Bortoluzzi VT, Ribeiro RT, Zemniaçak ÂB, Cunha SDA, Sass JO, Castilho RF, Amaral AU, Wajner M. Disturbance of mitochondrial functions caused by N-acetylglutamate and N-acetylmethionine in brain of adolescent rats: Potential relevance in aminoacylase 1 deficiency. Neurochem Int 2023; 171:105631. [PMID: 37852579 DOI: 10.1016/j.neuint.2023.105631] [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: 07/10/2023] [Revised: 09/24/2023] [Accepted: 10/15/2023] [Indexed: 10/20/2023]
Abstract
Aminoacylase 1 (ACY1) deficiency is a rare genetic disorder that affects the breakdown of short-chain aliphatic N-acetylated amino acids, leading to the accumulation of these amino acid derivatives in the urine of patients. Some of the affected individuals have presented with heterogeneous neurological symptoms such as psychomotor delay, seizures, and intellectual disability. Considering that the pathological mechanisms of brain damage in this disorder remain mostly unknown, here we investigated whether major metabolites accumulating in ACY1 deficiency, namely N-acetylglutamate (NAG) and N-acetylmethionine (NAM), could be toxic to the brain by examining their in vitro effects on important mitochondrial properties. We assessed the effects of NAG and NAM on membrane potential, swelling, reducing equivalents, and Ca2+ retention capacity in purified mitochondrial preparations obtained from the brain of adolescent rats. NAG and NAM decreased mitochondrial membrane potential, reducing equivalents, and calcium retention capacity, and induced swelling in Ca2+-loaded brain mitochondria supported by glutamate plus malate. Notably, these changes were completely prevented by the classical inhibitors of mitochondrial permeability transition (MPT) pore cyclosporin A plus ADP and by ruthenium red, implying the participation of MPT and Ca2+ in these effects. Our findings suggest that NAG- and NAM-induced disruption of mitochondrial functions involving MPT may represent relevant mechanisms of neuropathology in ACY1 deficiency.
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Affiliation(s)
- Vanessa Trindade Bortoluzzi
- PPG Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
| | - Rafael Teixeira Ribeiro
- PPG Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
| | - Ângela Beatris Zemniaçak
- PPG Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
| | - Sâmela de Azevedo Cunha
- PPG Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
| | - Jörn Oliver Sass
- Research Group Inborn Errors of Metabolism, Department of Natural Sciences & Institute for Functional Gene Analytics, Bonn-Rhein-Sieg University of Applied Sciences, Rheinbach, Germany.
| | - Roger Frigério Castilho
- Departamento de Patologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, Brazil.
| | - Alexandre Umpierrez Amaral
- PPG Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; PPG Atenção Integral à Saúde, Universidade Regional Integrada do Alto Uruguai e das Missões, Erechim, Brazil.
| | - Moacir Wajner
- PPG Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
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Jia K, Tian J, Wang T, Guo L, Xuan Z, Swerdlow RH, Du H. Mitochondria-sequestered Aβ renders synaptic mitochondria vulnerable in the elderly with a risk of Alzheimer disease. JCI Insight 2023; 8:e174290. [PMID: 37991017 PMCID: PMC10721326 DOI: 10.1172/jci.insight.174290] [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: 08/02/2023] [Accepted: 10/13/2023] [Indexed: 11/23/2023] Open
Abstract
Mitochondria are critical for neurophysiology, and mitochondrial dysfunction constitutes a characteristic pathology in both brain aging and Alzheimer disease (AD). Whether mitochondrial deficiency in brain aging and AD is mechanistically linked, however, remains controversial. We report a correlation between intrasynaptosomal amyloid β 42 (Aβ42) and synaptic mitochondrial bioenergetics inefficiency in both aging and amnestic mild cognitive impairment, a transitional stage between normal aging and AD. Experiments using a mouse model expressing nonmutant humanized Aβ (humanized Aβ-knockin [hAβ-KI] mice) confirmed the association of increased intramitochondrial sequestration of Aβ42 with exacerbated synaptic mitochondrial dysfunction in an aging factor- and AD risk-bearing context. Also, in comparison with global cerebral Aβ, intramitochondrial Aβ was relatively preserved from activated microglial phagocytosis in aged hAβ-KI mice. The most parsimonious interpretation of our results is that aging-related mitochondrial Aβ sequestration renders synaptic mitochondrial dysfunction in the transitional stage between normal aging and AD. Mitochondrial dysfunction in both brain aging and the prodromal stage of AD may follow a continuous transition in response to escalated intraneuronal, especially intramitochondrial Aβ, accumulation. Moreover, our findings further implicate a pivotal role of mitochondria in harboring early amyloidosis during the conversion from normal to pathological aging.
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Affiliation(s)
- Kun Jia
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, Kansas, USA
| | - Jing Tian
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, Kansas, USA
| | - Tienju Wang
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, Kansas, USA
| | - Lan Guo
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, Kansas, USA
| | - Zhenyu Xuan
- Department of Biological Sciences, Center for Systems Biology, University of Texas at Dallas, Richardson, Texas, USA
| | - Russell H. Swerdlow
- Alzheimer’s Disease Center, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Heng Du
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, Kansas, USA
- Alzheimer’s Disease Center, University of Kansas Medical Center, Kansas City, Kansas, USA
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Marzola P, Melzer T, Pavesi E, Gil-Mohapel J, Brocardo PS. Exploring the Role of Neuroplasticity in Development, Aging, and Neurodegeneration. Brain Sci 2023; 13:1610. [PMID: 38137058 PMCID: PMC10741468 DOI: 10.3390/brainsci13121610] [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: 10/23/2023] [Revised: 11/16/2023] [Accepted: 11/18/2023] [Indexed: 12/24/2023] Open
Abstract
Neuroplasticity refers to the ability of the brain to reorganize and modify its neural connections in response to environmental stimuli, experience, learning, injury, and disease processes. It encompasses a range of mechanisms, including changes in synaptic strength and connectivity, the formation of new synapses, alterations in the structure and function of neurons, and the generation of new neurons. Neuroplasticity plays a crucial role in developing and maintaining brain function, including learning and memory, as well as in recovery from brain injury and adaptation to environmental changes. In this review, we explore the vast potential of neuroplasticity in various aspects of brain function across the lifespan and in the context of disease. Changes in the aging brain and the significance of neuroplasticity in maintaining cognitive function later in life will also be reviewed. Finally, we will discuss common mechanisms associated with age-related neurodegenerative processes (including protein aggregation and accumulation, mitochondrial dysfunction, oxidative stress, and neuroinflammation) and how these processes can be mitigated, at least partially, by non-invasive and non-pharmacologic lifestyle interventions aimed at promoting and harnessing neuroplasticity.
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Affiliation(s)
- Patrícia Marzola
- Department of Morphological Sciences and Graduate Neuroscience Program, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis 88040-900, SC, Brazil; (P.M.); (T.M.); (E.P.)
| | - Thayza Melzer
- Department of Morphological Sciences and Graduate Neuroscience Program, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis 88040-900, SC, Brazil; (P.M.); (T.M.); (E.P.)
| | - Eloisa Pavesi
- Department of Morphological Sciences and Graduate Neuroscience Program, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis 88040-900, SC, Brazil; (P.M.); (T.M.); (E.P.)
| | - Joana Gil-Mohapel
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
- Island Medical Program, Faculty of Medicine, University of British Columbia, Victoria, BC V8P 5C2, Canada
| | - Patricia S. Brocardo
- Department of Morphological Sciences and Graduate Neuroscience Program, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis 88040-900, SC, Brazil; (P.M.); (T.M.); (E.P.)
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Camacho-Pereira J, Lai de Souza LO, Chichierchio MS, Rodrigues-Chaves C, Lomba LDS, Fonseca-Oliveira M, Carvalho-Mendonça D, Silva-Rodrigues T, Galina A. The NADase CD38 may not dictate NAD levels in brain mitochondria of aged mice but regulates hydrogen peroxide generation. Free Radic Biol Med 2023; 209:29-39. [PMID: 37774804 DOI: 10.1016/j.freeradbiomed.2023.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/01/2023]
Abstract
Aging is a time-related functional decline that affects many species. One of the hallmarks of aging is mitochondrial dysfunction, which leads to metabolic decline. The NAD decline during aging, in several tissues, correlates with increase in NADase activity of CD38. Knock out or pharmacological inhibition of CD38 activity can rescue mitochondrial function in several tissues, however, the role of CD38 in controlling NAD levels and metabolic function in the aging brain is unknown. In this work, we investigated CD38 NADase activity controlling NAD levels and mitochondrial function in mice brain with aging. We demonstrate that NADase activity of CD38 does not dictate NAD total levels in brain of aging mice and does not control mitochondrial oxygen consumption nor other oxygen parameters markers of mitochondrial dysfunction. However, for the first time we show that CD38 regulates hydrogen peroxide (H2O2) generation, one of the reactive oxygen species (ROS) in aging brain, through regulation of pyruvate dehydrogenase and alfa-ketoglutarate dehydrogenase, as mitochondria H2O2 leakage sites. The effect may be related to mitochondrial calcium handling differences in CD38 absence. Our study highlights a novel role of CD38 in brain energy metabolism and aging.
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Affiliation(s)
- Juliana Camacho-Pereira
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Leonardo Osbourne Lai de Souza
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Marina Santos Chichierchio
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Camila Rodrigues-Chaves
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Luiza de Sousa Lomba
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Manoel Fonseca-Oliveira
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Daniel Carvalho-Mendonça
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Thaia Silva-Rodrigues
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Antonio Galina
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
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Tian J, Du E, Guo L. Mitochondrial Interaction with Serotonin in Neurobiology and Its Implication in Alzheimer's Disease. J Alzheimers Dis Rep 2023; 7:1165-1177. [PMID: 38025801 PMCID: PMC10657725 DOI: 10.3233/adr-230070] [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: 07/14/2023] [Accepted: 08/16/2023] [Indexed: 12/01/2023] Open
Abstract
Alzheimer's disease (AD) is a lethal neurodegenerative disorder characterized by severe brain pathologies and progressive cognitive decline. While the exact cause of this disease remains unknown, emerging evidence suggests that dysregulation of neurotransmitters contributes to the development of AD pathology and symptoms. Serotonin, a critical neurotransmitter in the brain, plays a pivotal role in regulating various brain processes and is implicated in neurological and psychiatric disorders, including AD. Recent studies have shed light on the interplay between mitochondrial function and serotonin regulation in brain physiology. In AD, there is a deficiency of serotonin, along with impairments in mitochondrial function, particularly in serotoninergic neurons. Additionally, altered activity of mitochondrial enzymes, such as monoamine oxidase, may contribute to serotonin dysregulation in AD. Understanding the intricate relationship between mitochondria and serotonin provides valuable insights into the underlying mechanisms of AD and identifies potential therapeutic targets to restore serotonin homeostasis and alleviate AD symptoms. This review summarizes the recent advancements in unraveling the connection between brain mitochondria and serotonin, emphasizing their significance in AD pathogenesis and underscoring the importance of further research in this area. Elucidating the role of mitochondria in serotonin dysfunction will promote the development of therapeutic strategies for the treatment and prevention of this neurodegenerative disorder.
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Affiliation(s)
- Jing Tian
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, KS, USA
| | - Eric Du
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, KS, USA
- Blue Valley West High School, Overland Park, KS, USA
| | - Lan Guo
- Department of Pharmacology and Toxicology, University of Kansas, Lawrence, KS, USA
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Liu L, Qi X, Cheng S, Meng P, Yang X, Pan C, Zhang N, Chen Y, Li C, Zhang H, Zhang Z, Zhang J, Cheng B, Wen Y, Jia Y, Liu H, Zhang F. Epigenetic analysis suggests aberrant cerebellum brain aging in old-aged adults with autism spectrum disorder and schizophrenia. Mol Psychiatry 2023; 28:4867-4876. [PMID: 37612365 DOI: 10.1038/s41380-023-02233-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 08/25/2023]
Abstract
The aberrant aging hypothesis of schizophrenia (SCZ) and autism spectrum disorder (ASD) has been proposed, and the DNA methylation (DNAm) clock, which is a cumulative evaluation of DNAm levels at age-related CpGs, could serve as a biological aging indicator. This study evaluated epigenetic brain aging of ASD and SCZ using Horvath's epigenetic clock, based on two public genome-wide DNA methylation datasets of post-mortem brain samples (NASD = 222; NSCZ = 142). Total subjects were further divided into subgroups by gender and age. The epigenetic age acceleration (AgeAccel) for each sample was calculated as the residual value resulting from the regression model and compared between groups. Results showed DNAm age has a strong correlation with chronological age in both datasets across multiple brain regions (P < 0.05). When divided into equally sized age groups, the AgeAccel of the cerebellum (CB) region from people over 45 years of age was greater compared to the control sample (AgeAccel of ASD vs control: 5.069 vs -6.249; P < 0.001). And a decelerated epigenetic aging process was observed in the CB region of individuals with SCZ aged 50-70 years (AgeAccel of SCZ vs control: -3.171 vs 2.418; P < 0.05). However, our results showed no significant difference in AgeAccel between ASD and control groups, and between SCZ and control groups in the total and gender-specific groups (P > 0.05). This study's results revealed some evidence for aberrant epigenetic CB brain aging in old-aged patients with ASD and SCZ, indicating a different pattern of CB aging in older adults with these two diseases. However, further studies of larger ASD and SCZ cohorts are necessary to make definitive conclusions on this observation.
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Affiliation(s)
- Li Liu
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Xin Qi
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P. R. China
| | - Shiqiang Cheng
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Peilin Meng
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Xuena Yang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Chuyu Pan
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Na Zhang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Yujing Chen
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Chune Li
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Huijie Zhang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Zhen Zhang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Jingxi Zhang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Bolun Cheng
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Yan Wen
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Yumeng Jia
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Huan Liu
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China
| | - Feng Zhang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education of China, Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P. R. China.
- Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P. R. China.
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Sheng N, Zhang Z, Zheng H, Ma C, Li M, Wang Z, Wang L, Jiang J, Zhang J. Scutellarin Rescued Mitochondrial Damage through Ameliorating Mitochondrial Glucose Oxidation via the Pdk-Pdc Axis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303584. [PMID: 37750289 PMCID: PMC10646256 DOI: 10.1002/advs.202303584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/01/2023] [Indexed: 09/27/2023]
Abstract
Mitochondrial bioenergetic deficits and their resulting glucose hypometabolism are the key pathophysiological modulators that promote neurodegeneration. However, there are no specific potential molecules that have been identified to treat neurological diseases by regulating energy metabolism and repairing mitochondrial damage. Pyruvate dehydrogenase (PDH) complex (PDC), which can be phosphorylated by pyruvate dehydrogenase kinase (PDK), is the gate-keeping enzyme for mitochondrial glucose oxidation. In this study, a small-molecule scutellarin (SG) is discovered that can significantly alleviate the neuropathological changes in hippocampal CA1 of cerebral hypoperfusion model rats, rescued the morphological changes of abnormal mitochondria, and restored mitochondrial homeostasis. Mitochondrial proteomics, energy metabolism monitoring, and 13 C-metabolic flux analysis targeted SG activity on PDK2, thus regulating PDK-PDC-mediated glycolytic metabolism to TCA cycle during mitochondrial OXPHOS damage. The knockdown of PDK2 in the SK-N-SH cells validated that SG could rescue mitochondrial damage via the PDK-PDC axis, promote the MMP level and reduce the mitochondria-dependent apoptosis. Collectively, this study explored the novel therapeutic approach: the PDK-PDC axis for neurological injury and cognitive impairment and uncovered the effect of SG on mitochondrial protection via the PDK-PDC axis and mitochondrial glucose oxidation. The findings indicate that active components ameliorating mitochondrial bioenergetic deficits could be of significant value for neurological disease therapy.
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Affiliation(s)
- Ning Sheng
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Zhihui Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Hao Zheng
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Congyu Ma
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Menglin Li
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Zhe Wang
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Lulu Wang
- Institute of Medicinal BiotechnologyChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Jiandong Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
- Institute of Medicinal BiotechnologyChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
| | - Jinlan Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural MedicinesInstitute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100050China
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Zhang L, Zhou M, Gao X, Xie Y, Xiao J, Liu T, Zeng X. Estrogen-related genes for thyroid cancer prognosis, immune infiltration, staging, and drug sensitivity. BMC Cancer 2023; 23:1048. [PMID: 37907864 PMCID: PMC10619281 DOI: 10.1186/s12885-023-11556-0] [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: 07/07/2023] [Accepted: 10/22/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND Thyroid cancer (THCA) has become increasingly common in recent decades, and women are three to four times more likely to develop it than men. Evidence shows that estrogen has a significant impact on THCA proliferation and growth. Nevertheless, the effects of estrogen-related genes (ERGs) on THCA stages, immunological infiltration, and treatment susceptibility have not been well explored. METHODS Clinicopathological and transcriptome data of patients with THCA from the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) were cleaned before consensus clustering. Differential expression analysis was performed on the genes expressed between THCA and paraneoplastic tissues in TCGA, and Wayne analysis was performed on the ERGs obtained from the Gene Set Enrichment Analysis MsigDB and differentially expressed genes (DEGs). Univariate Cox and least absolute shrinkage and selection operator (LASSO) analyses were used to identify the set of estrogen-related differentially expressed genes (ERDEGs) associated with progression-free intervals (PFI) and to establish a prediction model. Receiver operating characteristic curves were plotted to calculate the risk scores and PFI status to validate the predictive effect of the model. Enrichment analyses and immune infiltration analyses were performed to analyze DEGs between the high- and low-risk groups, and a nomogram plot was used in the risk model to predict the PFI of THCA. RESULTS The expression of 120 ERDEGs differed significantly between the two groups (P < 0.05). Five (CD24, CAV1, TACC1, TIPARP, and HSD17B10) of the eight ERDEGs identified using univariate Cox and LASSO regression were validated via RT-qPCR and immunohistochemistry analysis of clinical tissue samples and were used for clinical staging and drug sensitivity analysis. Risk-DEGs were shown to be associated with immune modulation and tumor immune evasion, as well as defense systems, signal transduction, the tumor microenvironment, and immunoregulation. In 19 of the 28 immune cells, infiltration levels differed between the high- and low-risk groups. High-risk patients in the immunotherapy dataset had considerably shorter survival times than low-risk patients. CONCLUSION We identified and confirmed eight ERDEGs using a systematic analysis and screened sensitive drugs for ERDEGs. These results provide molecular evidence for the involvement of ERGs in controlling the immunological microenvironment and treatment response in THCA.
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Affiliation(s)
- Leiying Zhang
- Suzhou Medical College of Soochow University, Suzhou, China
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Man Zhou
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Xiaoni Gao
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yang Xie
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Thyroid Diseases, Gannan Medical University, Ganzhou, China
- Ganzhou Key Laboratory of Thyroid Tumor, Ganzhou, China
| | - Junqi Xiao
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Tao Liu
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Beijing Business University, Beijing, China
| | - Xiangtai Zeng
- Suzhou Medical College of Soochow University, Suzhou, China.
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, China.
- Institute of Thyroid Diseases, Gannan Medical University, Ganzhou, China.
- Ganzhou Key Laboratory of Thyroid Tumor, Ganzhou, China.
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Cozzolino F, Canè L, Sacchettino L, Gatto MC, Iacobucci I, Gatta C, De Biase D, Di Napoli E, Paciello O, Avallone L, Monti M, d’Angelo D, Napolitano F. Preliminary evaluation of the proteomic profiling in the hippocampus of aged grazing cattle. Front Aging Neurosci 2023; 15:1274073. [PMID: 37965495 PMCID: PMC10641839 DOI: 10.3389/fnagi.2023.1274073] [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: 08/07/2023] [Accepted: 10/11/2023] [Indexed: 11/16/2023] Open
Abstract
Brain aging is a physiological process associated with physical and cognitive decline; however, in both humans and animals, it can be regarded as a risk factor for neurodegenerative disorders, such as Alzheimer's disease. Among several brain regions, hippocampus appears to be more susceptible to detrimental effects of aging. Hippocampus belongs to limbic system and is mainly involved in declarative memories and context-dependent spatial-learning, whose integrity is compromised in an age-dependent manner. In the present work, taking advantage of liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based proteomics, we sought to identify proteins differentially expressed in the hippocampus of the aged grazing milk cows. Our exploratory findings showed that, out of 707 identified proteins, 112 were significantly altered in old cattle, when compared to the adult controls, and functional clusterization highlighted their involvement in myelination, synaptic vesicle, metabolism, and calcium-related biological pathways. Overall, our preliminary data pave the way for the future studies, aimed at better characterizing the role of such a subcortical brain region in the age-dependent cognitive decline, as well as identifying early aging markers to improve animal welfare and husbandry practices of dairy cattle from intensive livestock.
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Affiliation(s)
- Flora Cozzolino
- CEINGE-Biotecnologie Avanzate “Franco Salvatore”-Via G. Salvatore, Naples, Italy
- Department of Chemical Sciences, University of Naples, Federico II, Naples, Italy
| | - Luisa Canè
- CEINGE-Biotecnologie Avanzate “Franco Salvatore”-Via G. Salvatore, Naples, Italy
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Luigi Sacchettino
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Maria Claudia Gatto
- CEINGE-Biotecnologie Avanzate “Franco Salvatore”-Via G. Salvatore, Naples, Italy
| | - Ilaria Iacobucci
- CEINGE-Biotecnologie Avanzate “Franco Salvatore”-Via G. Salvatore, Naples, Italy
- Department of Chemical Sciences, University of Naples, Federico II, Naples, Italy
| | - Claudia Gatta
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Davide De Biase
- Department of Pharmacy, University of Salerno, Fisciano, Italy
| | - Evaristo Di Napoli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Luigi Avallone
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Maria Monti
- CEINGE-Biotecnologie Avanzate “Franco Salvatore”-Via G. Salvatore, Naples, Italy
- Department of Chemical Sciences, University of Naples, Federico II, Naples, Italy
| | - Danila d’Angelo
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Francesco Napolitano
- CEINGE-Biotecnologie Avanzate “Franco Salvatore”-Via G. Salvatore, Naples, Italy
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
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Xu X, Sun B, Zhao C. Poly (ADP-Ribose) polymerase 1 and parthanatos in neurological diseases: From pathogenesis to therapeutic opportunities. Neurobiol Dis 2023; 187:106314. [PMID: 37783233 DOI: 10.1016/j.nbd.2023.106314] [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: 07/28/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023] Open
Abstract
Poly (ADP-ribose) polymerase-1 (PARP-1) is the most extensively studied member of the PARP superfamily, with its primary function being the facilitation of DNA damage repair processes. Parthanatos is a type of regulated cell death cascade initiated by PARP-1 hyperactivation, which involves multiple subroutines, including the accumulation of ADP-ribose polymers (PAR), binding of PAR and apoptosis-inducing factor (AIF), release of AIF from the mitochondria, the translocation of the AIF/macrophage migration inhibitory factor (MIF) complex, and massive MIF-mediated DNA fragmentation. Over the past few decades, the role of PARP-1 in central nervous system health and disease has received increasing attention. In this review, we discuss the biological functions of PARP-1 in neural cell proliferation and differentiation, memory formation, brain ageing, and epigenetic regulation. We then elaborate on the involvement of PARP-1 and PARP-1-dependant parthanatos in various neuropathological processes, such as oxidative stress, neuroinflammation, mitochondrial dysfunction, excitotoxicity, autophagy damage, and endoplasmic reticulum (ER) stress. Additional highlight contains PARP-1's implications in the initiation, progression, and therapeutic opportunities for different neurological illnesses, including neurodegenerative diseases, stroke, autism spectrum disorder (ASD), multiple sclerosis (MS), epilepsy, and neuropathic pain (NP). Finally, emerging insights into the repurposing of PARP inhibitors for the management of neurological diseases are provided. This review aims to summarize the exciting advancements in the critical role of PARP-1 in neurological disorders, which may open new avenues for therapeutic options targeting PARP-1 or parthanatos.
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Affiliation(s)
- Xiaoxue Xu
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China; Key Laboratory of Neurological Disease Big Data of Liaoning Province, Shenyang, China.
| | - Bowen Sun
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China; Key Laboratory of Neurological Disease Big Data of Liaoning Province, Shenyang, China
| | - Chuansheng Zhao
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China; Key Laboratory of Neurological Disease Big Data of Liaoning Province, Shenyang, China.
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Xu W, Gao W, Guo Y, Xue F, Di L, Fang S, Fan L, He Y, Zhou Y, Xie X, Pang X. Targeting mitophagy for depression amelioration: a novel therapeutic strategy. Front Neurosci 2023; 17:1235241. [PMID: 37869512 PMCID: PMC10587558 DOI: 10.3389/fnins.2023.1235241] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023] Open
Abstract
Major depressive disorder is a global psychiatric condition characterized by persistent low mood and anhedonia, which seriously jeopardizes the physical and mental well-being of affected individuals. While various hypotheses have been proposed to explicate the etiology of depression, the precise pathogenesis and effective treatment of this disorder remain elusive. Mitochondria, as the primary organelles responsible for cellular energy production, possess the ability to meet the essential energy demands of the brain. Research indicated that the accumulation of damaged mitochondria is associated with the onset of depression. Mitophagy, a type of cellular autophagy, specifically targets and removes excess or damaged mitochondria. Emerging evidence demonstrated that mitophagy dysfunction was involved in the progression of depression, and several pharmacological interventions that stimulating mitophagy exerted excellent antidepressant actions. We provided an overview of updated advancements on the regulatory mechanism of mitophagy and the mitophagy abnormality in depressed patients and animals, as well as in cell models of depression. Meanwhile, various therapeutic strategies to restore mitophagy for depression alleviation were also discussed in this review.
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Affiliation(s)
- Wangjun Xu
- School of Pharmacy, Henan University, Kaifeng, China
| | - Weiping Gao
- School of Pharmacy, Henan University, Kaifeng, China
| | - Yukun Guo
- School of Pharmacy, Henan University, Kaifeng, China
| | - Feng Xue
- School of Pharmacy, Henan University, Kaifeng, China
| | - Lulu Di
- School of Pharmacy, Henan University, Kaifeng, China
| | - Shaojie Fang
- School of Pharmacy, Henan University, Kaifeng, China
| | - Linlin Fan
- Henan Key Laboratory of Brain Targeted Bio-nanomedicine, School of Pharmacy, Henan University, Kaifeng, China
| | - Yangyang He
- School of Pharmacy, Henan University, Kaifeng, China
- Institutes of Traditional Chinese Medicine, Henan University, Kaifeng, China
| | - Yunfeng Zhou
- School of Pharmacy, Henan University, Kaifeng, China
- Henan Province Engineering Research Center of High Value Utilization to Natural Medical Resource in Yellow River Basin, School of Pharmacy, Henan University, Kaifeng, China
| | - Xinmei Xie
- School of Pharmacy, Henan University, Kaifeng, China
- Henan Province Engineering Research Center of High Value Utilization to Natural Medical Resource in Yellow River Basin, School of Pharmacy, Henan University, Kaifeng, China
| | - Xiaobin Pang
- School of Pharmacy, Henan University, Kaifeng, China
- Institutes of Traditional Chinese Medicine, Henan University, Kaifeng, China
- Henan Province Engineering Research Center of High Value Utilization to Natural Medical Resource in Yellow River Basin, School of Pharmacy, Henan University, Kaifeng, China
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Aleksandrova Y, Neganova M. Deciphering the Mysterious Relationship between the Cross-Pathogenetic Mechanisms of Neurodegenerative and Oncological Diseases. Int J Mol Sci 2023; 24:14766. [PMID: 37834214 PMCID: PMC10573395 DOI: 10.3390/ijms241914766] [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: 08/10/2023] [Revised: 09/22/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
The relationship between oncological pathologies and neurodegenerative disorders is extremely complex and is a topic of concern among a growing number of researchers around the world. In recent years, convincing scientific evidence has accumulated that indicates the contribution of a number of etiological factors and pathophysiological processes to the pathogenesis of these two fundamentally different diseases, thus demonstrating an intriguing relationship between oncology and neurodegeneration. In this review, we establish the general links between three intersecting aspects of oncological pathologies and neurodegenerative disorders, i.e., oxidative stress, epigenetic dysregulation, and metabolic dysfunction, examining each process in detail to establish an unusual epidemiological relationship. We also focus on reviewing the current trends in the research and the clinical application of the most promising chemical structures and therapeutic platforms that have a modulating effect on the above processes. Thus, our comprehensive analysis of the set of molecular determinants that have obvious cross-functional pathways in the pathogenesis of oncological and neurodegenerative diseases can help in the creation of advanced diagnostic tools and in the development of innovative pharmacological strategies.
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Affiliation(s)
- Yulia Aleksandrova
- Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432 Chernogolovka, Russia;
| | - Margarita Neganova
- Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432 Chernogolovka, Russia;
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia
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45
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Fujiwara M, Ferdousi F, Isoda H. Investigation into Molecular Brain Aging in Senescence-Accelerated Mouse (SAM) Model Employing Whole Transcriptomic Analysis in Search of Potential Molecular Targets for Therapeutic Interventions. Int J Mol Sci 2023; 24:13867. [PMID: 37762170 PMCID: PMC10530366 DOI: 10.3390/ijms241813867] [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: 08/09/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
With the progression of an aging society, cognitive aging has emerged as a pressing concern necessitating attention. The senescence-accelerated mouse-prone 8 (SAMP8) model has proven instrumental in investigating the early stages of cognitive aging. Through an extensive examination of molecular changes in the brain cortex, utilizing integrated whole-genome transcriptomics, our principal aim was to uncover potential molecular targets with therapeutic applications and relevance to drug screening. Our investigation encompassed four distinct conditions, comparing the same strain at different time points (1 year vs. 16 weeks) and the same time point across different strains (SAMP8 vs. SAMR1), namely: physiological aging, accelerated aging, early events in accelerated aging, and late events in accelerated aging. Focusing on key functional alterations associated with aging in the brain, including neurogenesis, synapse dynamics, neurometabolism, and neuroinflammation, we identified candidate genes linked to these processes. Furthermore, employing protein-protein interaction (PPI) analysis, we identified pivotal hub genes involved in interactions within these functional domains. Additionally, gene-set perturbation analysis allowed us to uncover potential upstream genes or transcription factors that exhibited activation or inhibition across the four conditions. In summary, our comprehensive analysis of the SAMP8 mouse brain through whole-genome transcriptomics not only deepens our understanding of age-related changes but also lays the groundwork for a predictive model to facilitate drug screening for cognitive aging.
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Affiliation(s)
- Michitaka Fujiwara
- Graduate School of Environmental Science Program, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8577, Japan
- Open Innovation Laboratory for Food and Medicinal Resource Engineering, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Tennodai, Tsukuba 305-8572, Japan
| | - Farhana Ferdousi
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan
| | - Hiroko Isoda
- Open Innovation Laboratory for Food and Medicinal Resource Engineering, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Tennodai, Tsukuba 305-8572, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan
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Chen H, Li Y, Gao J, Cheng Q, Liu L, Cai R. Activation of Pgk1 Results in Reduced Protein Aggregation in Diverse Neurodegenerative Conditions. Mol Neurobiol 2023; 60:5090-5101. [PMID: 37249790 DOI: 10.1007/s12035-023-03389-6] [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: 03/21/2022] [Accepted: 05/05/2023] [Indexed: 05/31/2023]
Abstract
The prevention of protein condensates has emerged as a new drug target to treat diverse neurodegenerative disorders. We previously reported that terazosin (TZ), a prescribed antagonist of the α1 adrenergic receptor, is an activator of phosphoglycerate kinase 1 (Pgk1) and Hsp90. In this study, we aimed to determine whether TZ prevents the formation of diverse pathological condensates in cell cultures and animal disease models. In primary neuron culture, TZ treatment reduced both the protein density and abundance of fused in sarcoma (FUS)-P525L-GFP, a disease-associated mutant form of FUS. Regarding the mechanism, we found that increased intracellular ATP levels were critical for the reduction in protein aggregate density. In addition, Hsp90 activation by TZ enhanced Hsp90 interaction with ULK1, a master regulator of autophagy. Through in vivo studies, we examined neuron-specific overexpression of tau in Drosophila, mouse models of APP/PS1 Alzheimer's disease (AD), and a rat model of multiple system atrophy (MSA) via the viral expression of α-synuclein in the striatum. TZ prevented and reversed the formation of pathological protein condensates. Together, our results suggest that activation of Pgk1 in cytosol may dissolve pathological protein aggregates via increased ATP levels and degrade these proteins via autophagy; the FUS-P525L degradation pathway in nucleus is unclear.
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Affiliation(s)
- Hao Chen
- Department of Biochemistry and Molecular Biology School of Basic Medicine, Capital Medical University, Youanmen, Beijing, 100069, China
| | - Yajie Li
- Department of Biochemistry and Molecular Biology School of Basic Medicine, Capital Medical University, Youanmen, Beijing, 100069, China
| | - Jingwen Gao
- Department of Biochemistry and Molecular Biology School of Basic Medicine, Capital Medical University, Youanmen, Beijing, 100069, China
| | - Qi Cheng
- Department of Biochemistry and Molecular Biology School of Basic Medicine, Capital Medical University, Youanmen, Beijing, 100069, China
| | - Lei Liu
- Department of Biochemistry and Molecular Biology School of Basic Medicine, Capital Medical University, Youanmen, Beijing, 100069, China.
| | - Rong Cai
- School of Engineering Medicine, Beihang University, Beijing, 100191, China.
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing, 100191, China.
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Datta D. Interrogating the Etiology of Sporadic Alzheimer's Disease Using Aging Rhesus Macaques: Cellular, Molecular, and Cortical Circuitry Perspectives. J Gerontol A Biol Sci Med Sci 2023; 78:1523-1534. [PMID: 37279946 PMCID: PMC10460555 DOI: 10.1093/gerona/glad134] [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: 11/16/2022] [Indexed: 06/08/2023] Open
Abstract
Aging is the most significant risk factor for neurodegenerative disorders such as Alzheimer's disease (AD) associated with profound socioeconomic and personal costs. Consequently, there is an urgent need for animal models that recapitulate the age-related spatial and temporal complexity and patterns of pathology identical to human AD. Our research in aging nonhuman primate models involving rhesus macaques has revealed naturally occurring amyloid and tau pathology, including the formation of amyloid plaques and neurofibrillary tangles comprising hyperphosphorylated tau. Moreover, rhesus macaques exhibit synaptic dysfunction in association cortices and cognitive impairments with advancing age, and thus can be used to interrogate the etiological mechanisms that generate neuropathological cascades in sporadic AD. Particularly, unique molecular mechanisms (eg, feedforward cyclic adenosine 3',5'-monophosphate [cAMP]-Protein kinase A (PKA)-calcium signaling) in the newly evolved primate dorsolateral prefrontal cortex are critical for persistent firing required for subserving higher-order cognition. For example, dendritic spines in primate dorsolateral prefrontal cortex contain a specialized repertoire of proteins to magnify feedforward cAMP-PKA-calcium signaling such as N-methyl-d-aspartic acid receptors and calcium channels on the smooth endoplasmic reticulum (eg, ryanodine receptors). This process is constrained by phosphodiesterases (eg, PDE4) that hydrolyze cAMP and calcium-buffering proteins (eg, calbindin) in the cytosol. However, genetic predispositions and age-related insults exacerbate feedforward cAMP-Protein kinase A-calcium signaling pathways that induce a myriad of downstream effects, including the opening of K+ channels to weaken network connectivity, calcium-mediated dysregulation of mitochondria, and activation of inflammatory cascades to eliminate synapses, thereby increasing susceptibility to atrophy. Therefore, aging rhesus macaques provide an invaluable model to explore novel therapeutic strategies in sporadic AD.
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Affiliation(s)
- Dibyadeep Datta
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, USA
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Detcheverry F, Senthil S, Narayanan S, Badhwar A. Changes in levels of the antioxidant glutathione in brain and blood across the age span of healthy adults: A systematic review. Neuroimage Clin 2023; 40:103503. [PMID: 37742519 PMCID: PMC10520675 DOI: 10.1016/j.nicl.2023.103503] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/22/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023]
Abstract
Aging is characterized by a gradual decline of the body's biological functions, which can lead to increased production of reactive oxygen species (ROS). Antioxidants neutralize ROS and maintain balance between oxidation and reduction. If ROS production exceeds the ability of antioxidant systems to neutralize, a damaging state of oxidative stress (OS) may exist. The reduced form of glutathione (GSH) is the most abundant antioxidant, and decline of GSH is considered a marker of OS. Our review summarizes the literature on GSH variations with age in healthy adults in brain (in vivo, ex vivo) and blood (plasma, serum), and reliability of in vivo magnetic resonance spectroscopy (MRS) measurement of GSH. A systematic PubMed search identified 35 studies. All in vivo MRS studies (N = 13) reported good to excellent reproducibility of GSH measures. In brain, 3 out of 4 MRS studies reported decreased GSH with age, measured in precuneus, cingulate, and occipital regions, while 1 study reported increased GSH with age in frontal and sensorimotor regions. In post-mortem brain, out of 3 studies, 2 reported decreased GSH with age in hippocampal and frontal regions, while 1 study reported increased GSH with age in a frontal region. Oxidized glutathione disulfide (GSSG) was reported to be increased in caudate with age in 1 study, suggesting OS. Although findings in the brain lacked a clear consensus, the majority of studies suggested a decline of GSH with age. The low number of studies (particularly ex vivo) and potential regional differences may have contributed to variability in the findings in brain. In blood, in contrast, GSH levels predominately were reported to decrease with advancing age (except in the oldest-old, who may represent a select group of particularly successful agers), while GSSG findings lacked consensus. The larger number of studies assessing age-specific GSH level changes in blood (N = 16) allowed for more robust consensus across studies than in brain. Overall, the literature suggests that aging is associated with increased OS in brain and body, but the timing and regional distribution of changes in the brain require further study. The contribution of brain OS to brain aging, and the effect of interventions to raise brain GSH levels on decline of brain function, remain understudied. Given that reliable tools to measure brain GSH exist, we hope this paper will serve as a catalyst to stimulate more work in this field.
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Affiliation(s)
- Flavie Detcheverry
- Multiomics Investigation of Neurodegenerative Diseases (MIND) lab, Montreal, QC, Canada; Département de Pharmacologie et Physiologie, Faculté de Médecine, Université de Montréal, Montreal, QC, Canada; Institut de Génie Biomédical, Université de Montréal, Montreal, QC, Canada; Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Montreal, QC, Canada
| | - Sneha Senthil
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, QC, Canada; McConnell Brain Imaging Centre, Montreal Neurological Institute-Hospital, Montreal, QC, Canada
| | - Sridar Narayanan
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, QC, Canada; McConnell Brain Imaging Centre, Montreal Neurological Institute-Hospital, Montreal, QC, Canada
| | - AmanPreet Badhwar
- Multiomics Investigation of Neurodegenerative Diseases (MIND) lab, Montreal, QC, Canada; Département de Pharmacologie et Physiologie, Faculté de Médecine, Université de Montréal, Montreal, QC, Canada; Institut de Génie Biomédical, Université de Montréal, Montreal, QC, Canada; Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Montreal, QC, Canada.
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Inoue R, Nishimune H. Neuronal Plasticity and Age-Related Functional Decline in the Motor Cortex. Cells 2023; 12:2142. [PMID: 37681874 PMCID: PMC10487126 DOI: 10.3390/cells12172142] [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: 07/16/2023] [Revised: 08/16/2023] [Accepted: 08/23/2023] [Indexed: 09/09/2023] Open
Abstract
Physiological aging causes a decline of motor function due to impairment of motor cortex function, losses of motor neurons and neuromuscular junctions, sarcopenia, and frailty. There is increasing evidence suggesting that the changes in motor function start earlier in the middle-aged stage. The mechanism underlining the middle-aged decline in motor function seems to relate to the central nervous system rather than the peripheral neuromuscular system. The motor cortex is one of the responsible central nervous systems for coordinating and learning motor functions. The neuronal circuits in the motor cortex show plasticity in response to motor learning, including LTP. This motor cortex plasticity seems important for the intervention method mechanisms that revert the age-related decline of motor function. This review will focus on recent findings on the role of plasticity in the motor cortex for motor function and age-related changes. The review will also introduce our recent identification of an age-related decline of neuronal activity in the primary motor cortex of middle-aged mice using electrophysiological recordings of brain slices.
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Affiliation(s)
- Ritsuko Inoue
- Laboratory of Neurobiology of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakaecho, Itabashi-ku, Tokyo 173-0015, Japan;
| | - Hiroshi Nishimune
- Laboratory of Neurobiology of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakaecho, Itabashi-ku, Tokyo 173-0015, Japan;
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-8-1 Harumicho, Fuchu-shi, Tokyo 183-8538, Japan
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50
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Olufunmilayo EO, Holsinger RMD. Roles of Non-Coding RNA in Alzheimer's Disease Pathophysiology. Int J Mol Sci 2023; 24:12498. [PMID: 37569871 PMCID: PMC10420049 DOI: 10.3390/ijms241512498] [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: 07/14/2023] [Revised: 07/25/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disorder that is accompanied by deficits in memory and cognitive functions. The disease is pathologically characterised by the accumulation and aggregation of an extracellular peptide referred to as amyloid-β (Aβ) in the form of amyloid plaques and the intracellular aggregation of a hyperphosphorelated protein tau in the form of neurofibrillary tangles (NFTs) that cause neuroinflammation, synaptic dysfunction, and oxidative stress. The search for pathomechanisms leading to disease onset and progression has identified many key players that include genetic, epigenetic, behavioural, and environmental factors, which lend support to the fact that this is a multi-faceted disease where failure in various systems contributes to disease onset and progression. Although the vast majority of individuals present with the sporadic (non-genetic) form of the disease, dysfunctions in numerous protein-coding and non-coding genes have been implicated in mechanisms contributing to the disease. Recent studies have provided strong evidence for the association of non-coding RNAs (ncRNAs) with AD. In this review, we highlight the current findings on changes observed in circular RNA (circRNA), microRNA (miRNA), short interfering RNA (siRNA), piwi-interacting RNA (piRNA), and long non-coding RNA (lncRNA) in AD. Variations in these ncRNAs could potentially serve as biomarkers or therapeutic targets for the diagnosis and treatment of Alzheimer's disease. We also discuss the results of studies that have targeted these ncRNAs in cellular and animal models of AD with a view for translating these findings into therapies for Alzheimer's disease.
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Affiliation(s)
- Edward O. Olufunmilayo
- Laboratory of Molecular Neuroscience and Dementia, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Department of Medicine, University College Hospital, Queen Elizabeth Road, Oritamefa, Ibadan 200212, Nigeria
| | - R. M. Damian Holsinger
- Laboratory of Molecular Neuroscience and Dementia, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Neuroscience, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
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