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Thananthirige KPM, Chitranshi N, Basavarajappa D, Rajput R, Abbasi M, Palanivel V, Gupta VB, Paulo JA, Koronyo-Hamaoui M, Mirzaei M, Graham SL, Gupta V. Tau modulation through AAV9 therapy augments Akt/Erk survival signalling in glaucoma mitigating the retinal degenerative phenotype. Acta Neuropathol Commun 2024; 12:89. [PMID: 38845058 PMCID: PMC11158005 DOI: 10.1186/s40478-024-01804-0] [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: 12/07/2023] [Accepted: 05/27/2024] [Indexed: 06/09/2024] Open
Abstract
The microtubule-associated protein Tau is a key player in various neurodegenerative conditions, including Alzheimer's disease (AD) and Tauopathies, where its hyperphosphorylation disrupts neuronal microtubular lattice stability. Glaucoma, a neurodegenerative disorder affecting the retina, leads to irreversible vision loss by damaging retinal ganglion cells and the optic nerve, often associated with increased intraocular pressure. Prior studies have indicated Tau expression and phosphorylation alterations in the retina in both AD and glaucoma, yet the causative or downstream nature of Tau protein changes in these pathologies remains unclear. This study investigates the impact of Tau protein modulation on retinal neurons under normal and experimental glaucoma conditions. Employing AAV9-mediated gene therapy for Tau overexpression and knockdown, both manipulations were found to adversely affect retinal structural and functional measures as well as neuroprotective Akt/Erk survival signalling in healthy conditions. In the experimental glaucoma model, Tau overexpression intensified inner retinal degeneration, while Tau silencing provided significant protection against these degenerative changes. These findings underscore the critical role of endogenous Tau protein levels in preserving retinal integrity and emphasize the therapeutic potential of targeting Tau in glaucoma pathology.
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Affiliation(s)
| | - Nitin Chitranshi
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia
| | - Devaraj Basavarajappa
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia
| | - Rashi Rajput
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia
| | - Mojdeh Abbasi
- Division of Ophthalmology, Department of Biomedical and Clinical Sciences, Linköping University, 58183, Linköping, Sweden
| | - Viswanthram Palanivel
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia
| | - Veer Bala Gupta
- School of Medicine, Deakin University, Melbourne, VIC, 3220, Australia
| | - Joao A Paulo
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Maya Koronyo-Hamaoui
- Department of Neurosurgery, Cedars-Sinai Medical Center, Maxine Dunitz Neurosurgical Research Institute, 127 S. San Vicente Blvd., Los Angeles, CA, 90048, USA
- Division of Applied Cell Biology and Physiology, Departments of Neurology and Biomedical Sciences, Cedars-Sinai Medical Center, 127 S. San Vicente Blvd., Los Angeles, CA, USA
| | - Mehdi Mirzaei
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia
| | - Stuart L Graham
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia
| | - Vivek Gupta
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, NSW, 2109, Australia.
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2
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Zubčić K, Franić D, Pravica M, Hof PR, Šimić G, Boban M. Effects of heterologous human tau protein expression in yeast models of proteotoxic stress response. CNS Neurosci Ther 2024; 30:e14304. [PMID: 37341072 PMCID: PMC11163194 DOI: 10.1111/cns.14304] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND The primary histological characteristic of Alzheimer's disease is the presence of neurofibrillary tangles, which are large aggregates of tau protein. Aging is the primary risk factor for the development of Alzheimer's disease, however, the underlying causes of tau protein aggregation and toxicity are unclear. AIMS Here we investigated tau aggregation and toxicity under the conditions of compromised protein homeostasis. METHODS We used heterologous expression of human tau protein in the unicellular eukaryote yeast Saccharomyces cerevisiae with evolutionarily conserved protein quality control pathways and examined tau-dependent toxicity and aggregation using growth assays, fluorescence microscopy, and a split luciferase-based reporter NanoBiT. RESULTS Tau protein expressed in yeast under mild proteotoxic stress, or in mutants with impaired pathways for proteotoxic stress response, did not lead to synthetic toxicity or the formation of obvious aggregates. Chronologically old cells also did not develop observable tau aggregates. Our examination of tau oligomerization in living cells using NanoBiT reporter suggests that tau does not form significant levels of oligomers under basal conditions or under mild proteotoxic stress. CONCLUSION Together our data suggest that human tau protein does not represent a major burden to the protein quality control system in yeast cells.
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Affiliation(s)
- Klara Zubčić
- Croatian Institute for Brain Research, University of Zagreb School of MedicineZagrebCroatia
| | - Dina Franić
- Croatian Institute for Brain Research, University of Zagreb School of MedicineZagrebCroatia
| | - Mihaela Pravica
- Croatian Institute for Brain Research, University of Zagreb School of MedicineZagrebCroatia
| | - Patrick R. Hof
- Nash Family Department of Neuroscience, Ronald M. Loeb Center for Alzheimer's DiseaseFriedman Brain Institute, Icahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Goran Šimić
- Croatian Institute for Brain Research, University of Zagreb School of MedicineZagrebCroatia
| | - Mirta Boban
- Croatian Institute for Brain Research, University of Zagreb School of MedicineZagrebCroatia
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3
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Fernandes MS, Pedroza AA, de Andrade Silva SC, de Lemos MDT, Bernardo EM, Pereira AR, Dos Santos TM, Lagranha C. Undernutrition during development modulates endoplasmic reticulum stress genes in the hippocampus of juvenile rats: Involvement of oxidative stress. Brain Res 2022; 1797:148098. [PMID: 36162496 DOI: 10.1016/j.brainres.2022.148098] [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: 05/16/2022] [Revised: 08/24/2022] [Accepted: 09/20/2022] [Indexed: 11/26/2022]
Abstract
To evaluate whether exercise training mitigates the deleterious effects of undernutrition during the developmental period in juvenile Wistar rats. Pregnant Wistar rats were fed with a diet containing 17 % or 8 % casein during pregnancy and lactation. At 30 days of life, male offspring were divided into 4 groups: Low-Protein non-trained (LS), Low-Protein Trained (LT), Normoprotein non-trained (NS), and Normoprotein Trained (NT). Trained rats performed aerobic exercise training (AET) for 4 weeks, 5 days a week, 1 h a day. 24 h from the last day of training, the animals were sacrificed. The tissues were removed to analyze indicators of mitochondrial metabolism, oxidative stress, and gene expression of GRP78, PERK, ATF6 ER stress markers, and BDNF. The results showed that undernutrition during development promotes deleterious effects on mitochondrial oxidative metabolism and induces reticulum stress in the hippocampus of juvenile rats. On the other hand, AET improves mitochondrial function and increases enzymatic and non-enzymatic antioxidant capacity, as well as declines ER stress. AET at moderate intensity for 4 weeks in male juvenile Wistar rats acts as a lifestyle intervention opposing the negative effects induced by a protein-restricted maternal diet.
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Affiliation(s)
- Matheus Santos Fernandes
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil; Physical Education and Sport Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - Anderson Apolônio Pedroza
- Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Severina Cássia de Andrade Silva
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Maria Daniele Teixeira de Lemos
- Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Elenilson M Bernardo
- Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Allifer R Pereira
- Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil
| | - Tony Meireles Dos Santos
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Physical Education and Sport Department, Federal University of Pernambuco, Recife, PE, Brazil
| | - Claudia Lagranha
- Graduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, Brazil; Graduate Program in Biochemistry and Physiology, Federal University of Pernambuco, Recife, PE, Brazil; Laboratory of Biochemistry and Exercise Biochemistry / CAV, Federal University of Pernambuco, Vitoria de Santo Antão, PE, Brazil.
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4
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Zhang LN, Li MJ, Shang YH, Liu YR, Han-Chang H, Lao FX. Zeaxanthin Attenuates the Vicious Circle Between Endoplasmic Reticulum Stress and Tau Phosphorylation: Involvement of GSK-3β Activation. J Alzheimers Dis 2022; 86:191-204. [PMID: 35034906 DOI: 10.3233/jad-215408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) characterized by neurofibrillary tangles caused by hyperphosphorylated tau is the most common cause of dementia. Zeaxanthin (Zea), derived from fruits and vegetables, may reduce the risk of AD. Endoplasmic reticulum stress (ERS) might cause memory impairment in AD. OBJECTIVE Here, we studied protective role of Zea on the relationship among ERS, activity of glycogen synthase kinase 3β (GSK-3β, tau phosphorylated kinase), and p-Tau (Ser 396 and Thr 231). METHODS The results were obtained in non-RA and RA group by using different treatment, such as 9-cis-retinoic acid (RA), TM (ERS inducer), Zea, 4-PBA (ERS inhibitor), and SB216763 (GSK-3β inhibitor). The methods included flow cytometry and MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] for the detections of cell cycle and cell viability and western blot as a third measure of proteins in relation to ERS and tau phosphorylation. We have collected and analyzed all the data that suggested application of drugs for the treatment in non-RA and RA group. RESULTS Zea displays its protection on TM-induced cell injury, upregulation of GRP78 expression, and change of GSK-3β activity and tau phosphorylation when 4-PBA and SB216763 interfere with the process. CONCLUSION These studies indicated that Zea is in vicious circle in ERS, GSK-3β, and tau phosphorylation, and further reflect its potential value in AD.
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Affiliation(s)
- Li-Na Zhang
- Beijing Key Laboratory of Bioactive Substances and Functional Foods, Beijing Union University, Beijing, P.R. China.,Institute of Functional Factors and Brain Science, Beijing Union University, Beijing, P.R. China.,College of Biochemical Engineering, Beijing Union University, Beijing, P.R. China
| | - Meng-Jie Li
- Beijing Key Laboratory of Bioactive Substances and Functional Foods, Beijing Union University, Beijing, P.R. China.,Institute of Functional Factors and Brain Science, Beijing Union University, Beijing, P.R. China.,College of Biochemical Engineering, Beijing Union University, Beijing, P.R. China
| | - Ying-Hui Shang
- Beijing Key Laboratory of Bioactive Substances and Functional Foods, Beijing Union University, Beijing, P.R. China.,Institute of Functional Factors and Brain Science, Beijing Union University, Beijing, P.R. China.,College of Biochemical Engineering, Beijing Union University, Beijing, P.R. China
| | - Yun-Ru Liu
- Beijing Key Laboratory of Bioactive Substances and Functional Foods, Beijing Union University, Beijing, P.R. China.,Institute of Functional Factors and Brain Science, Beijing Union University, Beijing, P.R. China.,College of Biochemical Engineering, Beijing Union University, Beijing, P.R. China
| | - Huang Han-Chang
- Beijing Key Laboratory of Bioactive Substances and Functional Foods, Beijing Union University, Beijing, P.R. China.,Institute of Functional Factors and Brain Science, Beijing Union University, Beijing, P.R. China.,College of Biochemical Engineering, Beijing Union University, Beijing, P.R. China
| | - Feng-Xue Lao
- Beijing Key Laboratory of Bioactive Substances and Functional Foods, Beijing Union University, Beijing, P.R. China.,Institute of Functional Factors and Brain Science, Beijing Union University, Beijing, P.R. China.,College of Biochemical Engineering, Beijing Union University, Beijing, P.R. China
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5
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Shin YH, Cho H, Choi BY, Kim J, Ha J, Suh SW, Park SB. Phenotypic Discovery of Neuroprotective Agents by Regulation of Tau Proteostasis via Stress-Responsive Activation of PERK Signaling. Angew Chem Int Ed Engl 2021; 60:1831-1838. [PMID: 33210431 PMCID: PMC7898623 DOI: 10.1002/anie.202013915] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Indexed: 02/06/2023]
Abstract
Tau protein aggregates are a recognized neuropathological feature in Alzheimer's disease as well as many other neurodegenerative disorders, known as tauopathies. The development of tau-targeting therapies is therefore extremely important but efficient strategies or protein targets are still unclear. Here, we performed a cell-based phenotypic screening under endoplasmic reticulum (ER) stress conditions and identified a small molecule, SB1617, capable of suppressing abnormal tau protein aggregation. By applying label-free target identification technology, we revealed that the transient enhancement of protein kinase-like endoplasmic reticulum kinase (PERK) signaling pathway through the inhibition of stress-responsive SB1617 targets, PDIA3 and DNAJC3, is an effective strategy for regulating proteostasis in tauopathies. The molecular mechanism and the promising efficacy of SB1617 were demonstrated in neuronal cells and a mouse model with traumatic brain injury, a tauopathy known to involve ER stress.
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Affiliation(s)
- Young-Hee Shin
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Korea
| | - Hana Cho
- Department of Biophysics and Chemical Biology, Seoul National University, Seoul, 08826, Korea
| | - Bo Young Choi
- Department of Physiology, College of Medicine, Hallym University, Chuncheon, 24252, Korea
| | - Jonghoon Kim
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Korea.,Present address: Department of Chemistry, Soongsil University, Seoul, 06978, Korea
| | - Jaeyoung Ha
- Department of Biophysics and Chemical Biology, Seoul National University, Seoul, 08826, Korea
| | - Sang Won Suh
- Department of Physiology, College of Medicine, Hallym University, Chuncheon, 24252, Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Korea.,Department of Biophysics and Chemical Biology, Seoul National University, Seoul, 08826, Korea
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6
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Shin Y, Cho H, Choi BY, Kim J, Ha J, Suh SW, Park SB. Phenotypic Discovery of Neuroprotective Agents by Regulation of Tau Proteostasis via Stress‐Responsive Activation of PERK Signaling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Young‐Hee Shin
- CRI Center for Chemical Proteomics Department of Chemistry Seoul National University Seoul 08826 Korea
| | - Hana Cho
- Department of Biophysics and Chemical Biology Seoul National University Seoul 08826 Korea
| | - Bo Young Choi
- Department of Physiology College of Medicine Hallym University Chuncheon 24252 Korea
| | - Jonghoon Kim
- CRI Center for Chemical Proteomics Department of Chemistry Seoul National University Seoul 08826 Korea
- Present address: Department of Chemistry Soongsil University Seoul 06978 Korea
| | - Jaeyoung Ha
- Department of Biophysics and Chemical Biology Seoul National University Seoul 08826 Korea
| | - Sang Won Suh
- Department of Physiology College of Medicine Hallym University Chuncheon 24252 Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics Department of Chemistry Seoul National University Seoul 08826 Korea
- Department of Biophysics and Chemical Biology Seoul National University Seoul 08826 Korea
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7
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Silva MC, Haggarty SJ. Tauopathies: Deciphering Disease Mechanisms to Develop Effective Therapies. Int J Mol Sci 2020; 21:ijms21238948. [PMID: 33255694 PMCID: PMC7728099 DOI: 10.3390/ijms21238948] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/20/2020] [Accepted: 11/22/2020] [Indexed: 12/13/2022] Open
Abstract
Tauopathies are neurodegenerative diseases characterized by the pathological accumulation of microtubule-associated protein tau (MAPT) in the form of neurofibrillary tangles and paired helical filaments in neurons and glia, leading to brain cell death. These diseases include frontotemporal dementia (FTD) and Alzheimer's disease (AD) and can be sporadic or inherited when caused by mutations in the MAPT gene. Despite an incredibly high socio-economic burden worldwide, there are still no effective disease-modifying therapies, and few tau-focused experimental drugs have reached clinical trials. One major hindrance for therapeutic development is the knowledge gap in molecular mechanisms of tau-mediated neuronal toxicity and death. For the promise of precision medicine for brain disorders to be fulfilled, it is necessary to integrate known genetic causes of disease, i.e., MAPT mutations, with an understanding of the dysregulated molecular pathways that constitute potential therapeutic targets. Here, the growing understanding of known and proposed mechanisms of disease etiology will be reviewed, together with promising experimental tau-directed therapeutics, such as recently developed tau degraders. Current challenges faced by the fields of tau research and drug discovery will also be addressed.
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8
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Liu B, Huang B, Liu J, Shi JS. Dendrobium nobile Lindl alkaloid and metformin ameliorate cognitive dysfunction in senescence-accelerated mice via suppression of endoplasmic reticulum stress. Brain Res 2020; 1741:146871. [PMID: 32380088 DOI: 10.1016/j.brainres.2020.146871] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/06/2020] [Accepted: 04/28/2020] [Indexed: 12/25/2022]
Abstract
The senescence-accelerated mouse prone 8 (SAMP8) mice have many pathological features of Alzheimer's disease (AD) with aging. We previously reported that Dendrobium nobile Lindl alkaloid (DNLA) effectively improved cognitive deficits in multiple Alzheimer's disease (AD) models. This study further used SAMP8 mice to study the anti-aging effects of DNLA, focusing on endoplasmic reticulum (ER) stress. DNLA and metformin were orally administered to SAMP8 mice starting at 4-month of age for 6 months. Behavioral tests were performed in 10-month-old SAMP8 mice and age-matched SAMR1 control mice. At the end of experiment, neuron damage was evaluated by histology and transmission electron microscopy. ER stress-related proteins were analyzed with Western-blot. DNLA improved learning and memory impairments, reduced the loss of neurons and Nissl bodies in the hippocampus and cortex. DNLA ameliorated ER dilation and swelling in the hippocampal neurons. DNLA down-regulated the protein kinase RNA-like endoplasmic reticulum kinase (PERK) signaling pathway, decreased calpain 1, GSK-3β and Cdk5 activities and the Tau hyper-phosphorylation. The effects of DNLA were comparable to metformin. In summary, DNLA was effective in improving cognitive deficits in aged SAMP8 mice, possibly via suppression of ER stress-related PERK signaling pathway, sequential inhibition of calpain 1, GSK-3β and Cdk5 activities, and eventually reducing the hyper-phosphorylation of Tau.
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Affiliation(s)
- Bo Liu
- Shanghai University of Traditional Chinese Medicine, Shanghai, China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, China
| | - Bo Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, China
| | - Jie Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, China
| | - Jing-Shan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, China.
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