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Wang S, Dong K, Zhang J, Chen C, Shuai H, Yu X. Raw Inonotus obliquus polysaccharide counteracts Alzheimer's disease in a transgenic mouse model by activating the ubiquitin-proteosome system. Nutr Res Pract 2023; 17:1128-1142. [PMID: 38053824 PMCID: PMC10694425 DOI: 10.4162/nrp.2023.17.6.1128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/27/2023] [Accepted: 09/14/2023] [Indexed: 12/07/2023] Open
Abstract
BACKGROUND/OBJECTIVES Inonotus obliquus has been used as antidiabetic herb around the world, especially in the Russian and Scandinavian countries. Diabetes is widely believed to be a key factor in Alzheimer's disease (AD), which is widely considered to be type III diabetes. To investigate whether I. obliquus can also ameliorate AD, it would be interesting to identify new clues for AD treatment. We tested the anti-AD effects of raw Inonotus obliquus polysaccharide (IOP) in a mouse model of AD (3×Tg-AD transgenic mice). MATERIALS/METHODS SPF-grade 3×Tg-AD mice were randomly divided into three groups (Control, Metformin, and raw IOP groups, n = 5 per group). β-Amyloid deposition in the brain was analyzed using immunohistochemistry for AD characterization. Gene and protein expression of pertinent factors of the ubiquitin-proteasome system (UPS) was determined using real-time quantitative polymerase chain reaction and Western blotting. RESULTS Raw IOP significantly reduced the accumulation of amyloid aggregates and facilitated UPS activity, resulting in a significant reduction in AD-related symptoms in an AD mouse model. The presence of raw IOP significantly enhanced the expression of ubiquitin, E1, and Parkin (E3) at both the mRNA and protein levels in the mouse hippocampus. The mRNA level of ubiquitin carboxyl-terminal hydrolase isozyme L1, a key factor involved in UPS activation, also increased by approximately 50%. CONCLUSIONS Raw IOP could contribute to AD amelioration via the UPS pathway, which could be considered as a new potential strategy for AD treatment, although we could not exclude other mechanisms involved in counteracting AD processing.
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Affiliation(s)
- Shumin Wang
- School of Basic Medicine, Dali University, Dali 671000, China
| | - Kaiye Dong
- Department of Ophthalmology, The First Affiliated Hospital of Dali University, Dali 671000, China
| | - Ji Zhang
- College of Clinical Medicine, Dali University, Dali 671000, China
| | - Chaochao Chen
- College of Clinical Medicine, Dali University, Dali 671000, China
| | - Hongyan Shuai
- School of Basic Medicine, Dali University, Dali 671000, China
| | - Xin Yu
- School of Basic Medicine, Dali University, Dali 671000, China
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Thonda S, Puttapaka SN, Kona SV, Kalivendi SV. Extracellular-Signal-Regulated Kinase Inhibition Switches APP Processing from β- to α-Secretase under Oxidative Stress: Modulation of ADAM10 by SIRT1/NF-κB Signaling. ACS Chem Neurosci 2021; 12:4175-4186. [PMID: 34647720 DOI: 10.1021/acschemneuro.1c00582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The sequential cleavage of full-length amyloid precursor protein (APP) by secretases has been at the center of efforts for understanding the onset of Alzheimer's disease (AD). A decrease in α-secretase activity was observed during the progression of AD; however, the precise molecular mechanism involved in the downregulation of α-secretase under oxidative stress is not fully understood. In the present study, we have demonstrated that pharmacological inhibition of mitogen-activated protein kinase/extracellular-signal-regulated kinase (MAPK/ERK) by mitogen-activated protein kinase kinase-1 (MEK-1) inhibitor (PD98059) restored the expression of a disintegrin and metalloproteinase 10 (ADAM10) with a concomitant decrease in β-site APP cleavage enzyme 1 (BACE1) under oxidative stress. Silent mating-type information regulation 2 homologue 1 (SIRT1) activation by resveratrol also mitigated alterations in secretase levels through MAPK/ERK signaling. Intracerebroventricular (ICV) administration of streptozotocin in rats showed amyloidogenic processing of APP and altered the SIRT1/ERK axis in the hippocampus. We also observed that the ADAM10 expression is controlled at the transcriptional level by oxidative stress. Using the luciferase reporter activity of ADAM10 promoter deletion constructs, we have identified the region 290 bp upstream of the transcription start site (TSS) possessing regulatory elements responsible for ADAM10 downregulation with hydrogen peroxide (H2O2) treatment. Further, bioinformatics analysis revealed the presence of putative nuclear factor kappa B (NF-κB) binding sites in the ADAM10 promoter region. Treatment of cortical neurons with the NF-κB inhibitor (Bay 11-7082) mitigated the transcriptional upregulation of ADAM10 by PD98059. Overall, our findings suggest that SIRT1/ERK/NF-κB axis contributes to the downregulation of ADAM10, resulting in the shift from nonamyloidogenic to amyloidogenic processing of APP under oxidative stress.
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Affiliation(s)
- Swaroop Thonda
- Department of Applied Biology, CSIR─Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srinivas N. Puttapaka
- Department of Applied Biology, CSIR─Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Swathi V. Kona
- Department of Applied Biology, CSIR─Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shasi V. Kalivendi
- Department of Applied Biology, CSIR─Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Kumar D, Sharma A, Sharma L. A Comprehensive Review of Alzheimer's Association with Related Proteins: Pathological Role and Therapeutic Significance. Curr Neuropharmacol 2021; 18:674-695. [PMID: 32172687 PMCID: PMC7536827 DOI: 10.2174/1570159x18666200203101828] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/26/2019] [Accepted: 01/31/2020] [Indexed: 12/12/2022] Open
Abstract
Alzheimer's is an insidious, progressive, chronic neurodegenerative disease which causes the devastation of neurons. Alzheimer's possesses complex pathologies of heterogeneous nature counting proteins as one major factor along with enzymes and mutated genes. Proteins such as amyloid precursor protein (APP), apolipoprotein E (ApoE), presenilin, mortalin, calbindin-D28K, creactive protein, heat shock proteins (HSPs), and prion protein are some of the chief elements in the foremost hypotheses of AD like amyloid-beta (Aβ) cascade hypothesis, tau hypothesis, cholinergic neuron damage, etc. Disturbed expression of these proteins results in synaptic dysfunction, cognitive impairment, memory loss, and neuronal degradation. On the therapeutic ground, attempts of developing anti-amyloid, anti-inflammatory, anti-tau therapies are on peak, having APP and tau as putative targets. Some proteins, e.g., HSPs, which ameliorate oxidative stress, calpains, which help in regulating synaptic plasticity, and calmodulin-like skin protein (CLSP) with its neuroprotective role are few promising future targets for developing anti-AD therapies. On diagnostic grounds of AD C-reactive protein, pentraxins, collapsin response mediator protein-2, and growth-associated protein-43 represent the future of new possible biomarkers for diagnosing AD. The last few decades were concentrated over identifying and studying protein targets of AD. Here, we reviewed the physiological/pathological roles and therapeutic significance of nearly all the proteins associated with AD that addresses putative as well as probable targets for developing effective anti-AD therapies.
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Affiliation(s)
- Deepak Kumar
- School of Pharmaceutical Sciences, Shoolini University, Solan, H.P., India
| | - Aditi Sharma
- School of Pharmaceutical Sciences, Shoolini University, Solan, H.P., India
| | - Lalit Sharma
- School of Pharmaceutical Sciences, Shoolini University, Solan, H.P., India
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Liu D, Zhao Y, Qi Y, Gao Y, Tu D, Wang Y, Gao HM, Zhou H. Benzo(a)pyrene exposure induced neuronal loss, plaque deposition, and cognitive decline in APP/PS1 mice. J Neuroinflammation 2020; 17:258. [PMID: 32867800 PMCID: PMC7461337 DOI: 10.1186/s12974-020-01925-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 08/13/2020] [Indexed: 12/15/2022] Open
Abstract
Background Exposure to benzo(a)pyrene (BaP) was associated with cognitive impairments and some Alzheimer’s disease (AD)-like pathological changes. However, it is largely unknown whether BaP exposure participates in the disease progression of AD. Objectives To investigate the effect of BaP exposure on AD progression and its underlying mechanisms. Methods BaP or vehicle was administered to 4-month-old APPswe/PS1dE9 transgenic (APP/PS1) mice and wildtype (WT) mice for 2 months. Learning and memory ability and exploratory behaviors were evaluated 1 month after the initiation/termination of BaP exposure. AD-like pathological and biochemical alterations were examined 1 month after 2-month BaP exposure. Levels of soluble beta-amyloid (Aβ) oligomers and the number of Aβ plaques in the cortex and the hippocampus were quantified. Gene expression profiling was used to evaluate alternation of genes/pathways associated with AD onset and progression. Immunohistochemistry and Western blot were used to demonstrate neuronal loss and neuroinflammation in the cortex and the hippocampus. Treatment of primary neuron-glia cultures with aged Aβ (a mixture of monomers, oligomers, and fibrils) and/or BaP was used to investigate mechanisms by which BaP enhanced Aβ-induced neurodegeneration. Results BaP exposure induced progressive decline in spatial learning/memory and exploratory behaviors in APP/PS1 mice and WT mice, and APP/PS1 mice showed severer behavioral deficits than WT mice. Moreover, BaP exposure promoted neuronal loss, Aβ burden and Aβ plaque formation in APP/PS1 mice, but not in WT mice. Gene expression profiling showed most robust alteration in genes and pathways related to inflammation and immunoregulatory process, Aβ secretion and degradation, and synaptic formation in WT and APP/PS1 mice after BaP exposure. Consistently, the cortex and the hippocampus of WT and APP/PS1 mice displayed activation of microglia and astroglia and upregulation of inducible nitric oxide synthase (iNOS), glial fibrillary acidic protein (GFAP), and NADPH oxidase (three widely used neuroinflammatory markers) after BaP exposure. Furthermore, BaP exposure aggravated neurodegeneration induced by aged Aβ peptide in primary neuron-glia cultures through enhancing NADPH oxidase-derived oxidative stress. Conclusion Our study showed that chronic exposure to environmental pollutant BaP induced, accelerated, and exacerbated the progression of AD, in which elevated neuroinflammation and NADPH oxidase-derived oxidative insults were key pathogenic events.
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Affiliation(s)
- Dan Liu
- Department of Occupational and Environmental Health Sciences, Peking University, Beijing, 100191, China.,Population Health Sciences, German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Yujia Zhao
- Department of Occupational and Environmental Health Sciences, Peking University, Beijing, 100191, China
| | - Yuze Qi
- Department of Occupational and Environmental Health Sciences, Peking University, Beijing, 100191, China
| | - Yun Gao
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Institute for Brain Sciences, Nanjing University, 12 Xuefu Road, Nanjing, 210061, Jiangsu Province, China
| | - Dezhen Tu
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Institute for Brain Sciences, Nanjing University, 12 Xuefu Road, Nanjing, 210061, Jiangsu Province, China
| | - Yinxi Wang
- Department of Occupational and Environmental Health Sciences, Peking University, Beijing, 100191, China
| | - Hui-Ming Gao
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Institute for Brain Sciences, Nanjing University, 12 Xuefu Road, Nanjing, 210061, Jiangsu Province, China.
| | - Hui Zhou
- Department of Occupational and Environmental Health Sciences, Peking University, Beijing, 100191, China.
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Verheijen BM, Lussier C, Müller-Hübers C, Garruto RM, Oyanagi K, Braun RJ, van Leeuwen FW. Activation of the Unfolded Protein Response and Proteostasis Disturbance in Parkinsonism-Dementia of Guam. J Neuropathol Exp Neurol 2020; 79:34-45. [PMID: 31750913 DOI: 10.1093/jnen/nlz110] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/15/2019] [Accepted: 10/14/2019] [Indexed: 12/14/2022] Open
Abstract
Guam parkinsonism-dementia (G-PD) is a progressive and fatal neurodegenerative disorder among the native inhabitants of the Mariana Islands that manifests clinically with parkinsonism as well as dementia. Neuropathologically, G-PD is characterized by abundant neurofibrillary tangles composed of hyperphosphorylated tau, marked deposition of transactive response DNA-binding protein 43 kDa (TDP-43), and neuronal loss. The mechanisms that underlie neurodegeneration in G-PD are poorly understood. Here, we report that the unfolded protein response (UPR) is activated in G-PD brains. Specifically, we show that the endoplasmic reticulum (ER) chaperone binding immunoglobulin protein/glucose-regulated protein 78 kDa and phosphorylated (activated) ER stress sensor protein kinase RNA-like ER kinase accumulate in G-PD brains. Furthermore, proteinaceous aggregates in G-PD brains are found to contain several proteins related to the ubiquitin-proteasome system (UPS) and the autophagy pathway, two major mechanisms for intracellular protein degradation. In particular, a mutant ubiquitin (UBB+1), whose presence is a marker for UPS dysfunction, is shown to accumulate in G-PD brains. We demonstrate that UBB+1 is a potent modifier of TDP-43 aggregation and cytotoxicity in vitro. Overall, these data suggest that UPR activation and intracellular proteolytic pathways are intimately connected with the accumulation of aggregated proteins in G-PD.
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Affiliation(s)
- Bert M Verheijen
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
| | - Celina Lussier
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
| | - Cora Müller-Hübers
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
| | - Ralph M Garruto
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
| | - Kiyomitsu Oyanagi
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
| | - Ralf J Braun
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
| | - Fred W van Leeuwen
- Department of Translational Neuroscience (BMV); Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University (BMV), Utrecht, The Netherlands; Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany (CL, CM-H, RJB); Department of Anthropology (RMG); Department of Biological Sciences, Binghamton University, State University of New York (RMG), Binghamton, New York; Division of Neuropathology, Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Nagano, Japan (KO); Brain Research Laboratory, Hatsuishi Hospital, Kashiwa, Chiba, Japan (KO); Faculty of Medicine/Dental Medicine, Danube Private University, Krems an der Donau, Austria (RJB); and Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands (FWvL)
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