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Wang S, Xiao G, Tang M, Bi X, Xing C, Liu A, Zhao AZ, Li F. FKBP38 deletion exacerbates ConA-induced hepatitis by promoting the immune response through the MCP-1/p38 pathway. Int Immunopharmacol 2024; 138:112659. [PMID: 38996665 DOI: 10.1016/j.intimp.2024.112659] [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: 04/02/2024] [Revised: 06/26/2024] [Accepted: 07/07/2024] [Indexed: 07/14/2024]
Abstract
Autoimmune hepatitis (AIH) is a chronic liver disease characterized by immune dysregulation and hepatocyte damage. FKBP38, a member of the immunophilin family, has been implicated in immune regulation and the modulation of intracellular signaling pathways; however, its role in AIH pathogenesis remains poorly understood. In this study, we aimed to investigate the effects of hepatic FKBP38 deletion on AIH using a hepatic FKBP38 knockout (LKO) mouse model created via cre-loxP technology. We compared the survival rates, incidence, and severity of AIH in LKO mice with those in control mice. Our findings revealed that hepatic FKBP38 deletion resulted in an unfavorable prognosis in LKO mice with AIH. Specifically, LKO mice exhibited heightened liver inflammation and extensive hepatocyte damage compared to control mice, with a significant decrease in anti-apoptotic proteins and a marked increase in pro-apoptotic proteins. Additionally, transcriptional and translational levels of pro-inflammatory cytokines and chemokines were significantly increased in LKO mice compared to control mice. Immunoblot analysis showed that MCP-1 expression was significantly elevated in LKO mice. Furthermore, the phosphorylation of p38 was increased in LKO mice with AIH, indicating that FKBP38 deletion promotes liver injury in AIH by upregulating p38 phosphorylation and increasing MCP-1 expression. Immune cell profiling demonstrated elevated populations of T, NK, and B cells, suggesting a dysregulated immune response in LKO mice with AIH. Overall, our findings suggest that FKBP38 disruption exacerbates AIH severity by augmenting the immune response by activating the MCP-1/p38 signaling pathway.
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Affiliation(s)
- Shuai Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong Province, China
| | - Gengmiao Xiao
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong Province, China
| | - Minyi Tang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong Province, China
| | - Xinyun Bi
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Chaofeng Xing
- Shunde Hospital of Southern Medical University, Foshan, Guangdong Province, China
| | - Aolu Liu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong Province, China
| | - Allan Z Zhao
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong Province, China.
| | - Fanghong Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong Province, China.
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Isei MO, Crockett M, Chen E, Rodwell-Bullock J, Caroll T, Girardi PA, Nehrke K, Johnson GVW. Tau phosphorylation suppresses oxidative stress-induced mitophagy via FKBP8 receptor modulation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.05.602170. [PMID: 39026868 PMCID: PMC11257429 DOI: 10.1101/2024.07.05.602170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Neurodegenerative diseases are often characterized by mitochondrial dysfunction. In Alzheimer's disease, abnormal tau phosphorylation disrupts mitophagy, a quality control process through which damaged organelles are selectively removed from the mitochondrial network. The precise mechanism through which this occurs remains unclear. Previously, we showed that tau which has been mutated at Thr-231 to glutamic acid to mimic an Alzheimer's-relevant phospho-epitope expressed early in disease selectively inhibits oxidative stress-induced mitophagy in C. elegans. Here, we use immortalized mouse hippocampal neuronal cell lines to extend that result into mammalian cells. Specifically, we show that phosphomimetic tau at Ser-396/404 (EC) or Thr-231/Ser-235 (EM) partly inhibits mitophagy induction by paraquat, a potent inducer of mitochondrial oxidative stress. Moreover, a combination of immunologic and biochemical approaches demonstrates that the levels of the mitophagy receptor FKBP8, significantly decrease in response to paraquat in cells expressing EC or EM tau mutants, but not in cells expressing wildtype tau. In contrast, paraquat treatment results in a decrease in the levels of the mitophagy receptors FUNDC1 and BNIP3 in the presence of both wildtype tau and the tau mutants. Interestingly, FKBP8 is normally trafficked to the endoplasmic reticulum during oxidative stress induced mitophagy, and our results support a model where this trafficking is impacted by disease-relevant tau, perhaps through a direct interaction. We provide new insights into the molecular mechanisms underlying tau pathology in Alzheimer's disease and highlight FKBP8 receptor as a potential target for mitigating mitochondrial dysfunction in neurodegenerative diseases.
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Affiliation(s)
- Michael O Isei
- University of Rochester, Department of Anesthesiology & Perioperative Medicine, Rochester, New York, USA
| | - Meredith Crockett
- University of Rochester, Department of Anesthesiology & Perioperative Medicine, Rochester, New York, USA
| | - Emily Chen
- 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
| | - Trae Caroll
- University of Rochester, Department of Medicine, Nephrology Division, Rochester, New York, USA
| | - Peter A Girardi
- 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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3
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Agam G, Atawna B, Damri O, Azab AN. The Role of FKBPs in Complex Disorders: Neuropsychiatric Diseases, Cancer, and Type 2 Diabetes Mellitus. Cells 2024; 13:801. [PMID: 38786025 PMCID: PMC11119362 DOI: 10.3390/cells13100801] [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: 03/04/2024] [Revised: 04/30/2024] [Accepted: 05/02/2024] [Indexed: 05/25/2024] Open
Abstract
Stress is a common denominator of complex disorders and the FK-506 binding protein (FKBP)51 plays a central role in stress. Hence, it is not surprising that multiple studies imply the involvement of the FKBP51 protein and/or its coding gene, FKBP5, in complex disorders. This review summarizes such reports concentrating on three disorder clusters-neuropsychiatric, cancer, and type 2 diabetes mellitus (T2DM). We also attempt to point to potential mechanisms suggested to mediate the effect of FKBP5/FKBP51 on these disorders. Neuropsychiatric diseases considered in this paper include (i) Huntington's disease for which increased autophagic cellular clearance mechanisms related to decreased FKBP51 protein levels or activity is discussed, Alzheimer's disease for which increased FKBP51 activity has been shown to induce Tau phosphorylation and aggregation, and Parkinson's disease in the context of which FKBP12 is mentioned; and (ii) mental disorders, for which significant association with the single nucleotide polymorphism (SNP) rs1360780 of FKBP5 intron 7 along with decreased DNA methylation were revealed. Since cancer is a large group of diseases that can start in almost any organ or tissue of the body, FKBP51's role depends on the tissue type and differences among pathways expressed in those tumors. The FKBP51-heat-shock protein-(Hsp)90-p23 super-chaperone complex might function as an oncogene or as a tumor suppressor by downregulating the serine/threonine protein kinase (AKt) pathway. In T2DM, two potential pathways for the involvement of FKBP51 are highlighted as affecting the pathogenesis of the disease-the peroxisome proliferator-activated receptor-γ (PPARγ) and AKt.
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Affiliation(s)
- Galila Agam
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, The Zlotowski Center for Neuroscience and Zelman Center—The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (B.A.); (O.D.)
| | - Bayan Atawna
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, The Zlotowski Center for Neuroscience and Zelman Center—The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (B.A.); (O.D.)
| | - Odeya Damri
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, The Zlotowski Center for Neuroscience and Zelman Center—The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (B.A.); (O.D.)
| | - Abed N. Azab
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, The Zlotowski Center for Neuroscience and Zelman Center—The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel; (B.A.); (O.D.)
- Department of Nursing, School for Community Health Professions, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
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4
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Wu S, Zou Y, Tan X, Yang S, Chen T, Zhang J, Xu X, Wang F, Li W. The molecular mechanisms of peptidyl-prolyl cis/trans isomerase Pin1 and its relevance to kidney disease. Front Pharmacol 2024; 15:1373446. [PMID: 38711994 PMCID: PMC11070514 DOI: 10.3389/fphar.2024.1373446] [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: 01/19/2024] [Accepted: 03/26/2024] [Indexed: 05/08/2024] Open
Abstract
Pin1 is a member of the peptidyl-prolyl cis/trans isomerase subfamily and is widely expressed in various cell types and tissues. Alterations in Pin1 expression levels play pivotal roles in both physiological processes and multiple pathological conditions, especially in the onset and progression of kidney diseases. Herein, we present an overview of the role of Pin1 in the regulation of fibrosis, oxidative stress, and autophagy. It plays a significant role in various kidney diseases including Renal I/R injury, chronic kidney disease with secondary hyperparathyroidism, diabetic nephropathy, renal fibrosis, and renal cell carcinoma. The representative therapeutic agent Juglone has emerged as a potential treatment for inhibiting Pin1 activity and mitigating kidney disease. Understanding the role of Pin1 in kidney diseases is expected to provide new insights into innovative therapeutic interventions and strategies. Consequently, this review delves into the molecular mechanisms of Pin1 and its relevance in kidney disease, paving the way for novel therapeutic approaches.
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Affiliation(s)
- Shukun Wu
- Department of Nephrology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yurong Zou
- Department of Nephrology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaoqiu Tan
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Shuang Yang
- Department of Nephrology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
- Southwest Medical University, Luzhou, China
| | - Tangting Chen
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Jiong Zhang
- Department of Nephrology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xingli Xu
- State Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
- Ultrasound in Cardiac Electrophysiology and Biomechanics Key Laboratory of Sichuan Province, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Fang Wang
- Department of Nephrology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Wei Li
- Department of Emergency Surgery, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
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Ortiz NR, Guy N, Garcia YA, Sivils JC, Galigniana MD, Cox MB. Functions of the Hsp90-Binding FKBP Immunophilins. Subcell Biochem 2023; 101:41-80. [PMID: 36520303 DOI: 10.1007/978-3-031-14740-1_2] [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] [Indexed: 12/23/2022]
Abstract
The Hsp90 chaperone is known to interact with a diverse array of client proteins. However, in every case examined, Hsp90 is also accompanied by a single or several co-chaperone proteins. One class of co-chaperone contains a tetratricopeptide repeat (TPR) domain that targets the co-chaperone to the C-terminal region of Hsp90. Within this class are Hsp90-binding peptidylprolyl isomerases, most of which belong to the FK506-binding protein (FKBP) family. Despite the common association of FKBP co-chaperones with Hsp90, it is abundantly clear that the client protein influences, and is often influenced by, the particular FKBP bound to Hsp90. Examples include Xap2 in aryl hydrocarbon receptor complexes and FKBP52 in steroid receptor complexes. In this chapter, we discuss the known functional roles played by FKBP co-chaperones and, where possible, relate distinctive functions to structural differences between FKBP members.
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Affiliation(s)
- Nina R Ortiz
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Naihsuan Guy
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Yenni A Garcia
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Jeffrey C Sivils
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA
| | - Mario D Galigniana
- Departamento de Química Biológica/IQUIBICEN, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Biología y Medicina Experimental/CONICET, Buenos Aires, Argentina
| | - Marc B Cox
- Border Biomedical Research Center and Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA.
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX, USA.
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6
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Green R, Mayilsamy K, McGill AR, Martinez TE, Chandran B, Blair LJ, Bickford PC, Mohapatra SS, Mohapatra S. SARS-CoV-2 infection increases the gene expression profile for Alzheimer's disease risk. Mol Ther Methods Clin Dev 2022; 27:217-229. [PMID: 36187720 PMCID: PMC9508696 DOI: 10.1016/j.omtm.2022.09.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/21/2022] [Indexed: 02/02/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has caused over 600,000,000 infections globally thus far. Up to 30% of individuals with mild to severe disease develop long COVID, exhibiting diverse neurologic symptoms including dementias. However, there is a paucity of knowledge of molecular brain markers and whether these can precipitate the onset of Alzheimer's disease (AD). Herein, we report the brain gene expression profiles of severe COVID-19 patients showing increased expression of innate immune response genes and genes implicated in AD pathogenesis. The use of a mouse-adapted strain of SARS-CoV-2 (MA10) in an aged mouse model shows evidence of viral neurotropism, prolonged viral infection, increased expression of tau aggregator FKBP51, interferon-inducible gene Ifi204, and complement genes C4 and C5AR1. Brain histopathology shows AD signatures including increased tau-phosphorylation, tau-oligomerization, and α-synuclein expression in aged MA10 infected mice. The results of gene expression profiling of SARS-CoV-2-infected and AD brains and studies in the MA10 aged mouse model taken together, for the first time provide evidence suggesting that SARS-CoV-2 infection alters expression of genes in the brain associated with the development of AD. Future studies of common molecular markers in SARS-CoV-2 infection and AD could be useful for developing novel therapies targeting AD.
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Affiliation(s)
- Ryan Green
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Karthick Mayilsamy
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Andrew R. McGill
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Taylor E. Martinez
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Bala Chandran
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Laura J. Blair
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- Byrd Alzheimer’s Research Institute, University of South Florida, Tampa, FL 33613, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Paula C. Bickford
- Center of Excellence for Aging and Brain Repair, Departments of Neurosurgery and Brain Repair, and Molecular Pharmacology and Physiology, Morsani College of Medicine, Tampa, FL 33613, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Shyam S. Mohapatra
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Subhra Mohapatra
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
- James A Haley VA Hospital, Tampa, FL 33612, USA
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7
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Kanna M, Nakatsu Y, Yamamotoya T, Encinas J, Ito H, Okabe T, Asano T, Sakaguchi T. Roles of peptidyl prolyl isomerase Pin1 in viral propagation. Front Cell Dev Biol 2022; 10:1005325. [PMID: 36393854 PMCID: PMC9642847 DOI: 10.3389/fcell.2022.1005325] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/13/2022] [Indexed: 07/30/2023] Open
Abstract
Peptidyl-prolyl isomerase (PPIase) is a unique enzyme that promotes cis-trans isomerization of a proline residue of a target protein. Peptidyl-prolyl cis-trans isomerase NIMA (never in mitosis A)-interacting 1 (Pin1) is a PPIase that binds to the pSer/pThr-Pro motif of target proteins and isomerizes their prolines. Pin1 has been reported to be involved in cancer development, obesity, aging, and Alzheimer's disease and has been shown to promote the growth of several viruses including SARS-CoV-2. Pin1 enhances the efficiency of viral infection by promoting uncoating and integration of the human immunodeficiency virus. It has also been shown that Pin1 interacts with hepatitis B virus proteins and participates in viral replication. Furthermore, Pin1 promotes not only viral proliferation but also the progression of virus-induced tumorigenesis. In this review, we focus on the effects of Pin1 on the proliferation of various viruses and discuss the underlying molecular mechanisms.
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Affiliation(s)
- Machi Kanna
- Department of Biomedical Chemistry, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima City, Japan
| | - Yusuke Nakatsu
- Department of Biomedical Chemistry, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima City, Japan
| | - Takeshi Yamamotoya
- Department of Biomedical Chemistry, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima City, Japan
| | | | - Hisanaka Ito
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Takayoshi Okabe
- Drug Discovery Initiative, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Japan
| | - Tomoichiro Asano
- Department of Biomedical Chemistry, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima City, Japan
| | - Takemasa Sakaguchi
- Department of Virology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima City, Japan
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8
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Peak SL, Gracia L, Lora G, Jinwal UK. Hsp90-interacting Co-chaperones and their Family Proteins in Tau Regulation: Introducing a Novel Role for Cdc37L1. Neuroscience 2020; 453:312-323. [PMID: 33246057 DOI: 10.1016/j.neuroscience.2020.11.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/07/2020] [Accepted: 11/11/2020] [Indexed: 02/06/2023]
Abstract
Tau is a microtubule-associated protein that serves as a promoter of microtubule assembly and stability in neuron cells. In a collective group of neurodegenerative diseases called tauopathies, tau processing is altered as a result of gene mutations and post-translational modifications. In particular, in Alzheimer's disease (AD) or AD-like conditions, tau becomes hyperphosphorylated and forms toxic aggregates inside the cell. The chaperone heat shock protein 90 (Hsp90) plays an important role in the proper folding, degradation, and recycling of tau proteins and tau kinases. Hsp90 has many co-chaperones that aid in tau processing. In particular, a few of these co-chaperones, such as FK506-binding protein (FKBP) 51, protein phosphatase (PP) 5, cell division cycle 37 (Cdc37), and S100A1 have family members that are reported to affect Hsp90-mediated tau processing in either a similar or an opposite manner. Here, we provide a holistic review of these selected co-chaperones and their family proteins and introduce a novel Hsp90-binding Cdc37 relative, Cdc37-like-1 (Cdc37L1 or L1) in tau regulation. Overall, the proteins discussed here highlight the importance of studying family proteins in order to fully understand the mechanism of tau pathogenesis and to establish drug targets for the treatment of tauopathies.
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Affiliation(s)
- Stephanie L Peak
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Liam Gracia
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA; Department of Orthopedic Surgery, Duke University, 308 Research Dr, Durham NC 27710, NC, USA
| | - Gabriella Lora
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Umesh K Jinwal
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA.
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9
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Muralidar S, Ambi SV, Sekaran S, Thirumalai D, Palaniappan B. Role of tau protein in Alzheimer's disease: The prime pathological player. Int J Biol Macromol 2020; 163:1599-1617. [PMID: 32784025 DOI: 10.1016/j.ijbiomac.2020.07.327] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/07/2020] [Accepted: 07/31/2020] [Indexed: 01/11/2023]
Abstract
Alzheimer's disease (AD) is a prevalently found tauopathy characterized by memory loss and cognitive insufficiency. AD is an age-related neurodegenerative disease with two major hallmarks which includes extracellular amyloid plaques made of amyloid-β (Aβ) and intracellular neurofibrillary tangles of hyperphosphorylated tau. With population aging worldwide, there is an indispensable need for treatment strategies that can potentially manage this developing dementia. Despite broad researches on targeting Aβ in the past two decades, research findings on Aβ targeted therapeutics failed to prove efficacy in the treatment of AD. Tau protein with its extensive pathological role in several neurodegenerative diseases can be considered as a promising target candidate for developing therapeutic interventions. The abnormal hyperphosphorylation of tau plays detrimental pathological functions which ultimately lead to neurodegeneration. This review will divulge the importance of tau in AD pathogenesis, the interplay of Aβ and tau, the pathological functions of tau, and potential therapeutic strategies for an effective management of neuronal disorders.
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Affiliation(s)
- Shibi Muralidar
- School of Chemical and Biotechnology, SASTRA Deemed-to-be-University, Thanjavur 613401, Tamil Nadu, India
| | - Senthil Visaga Ambi
- School of Chemical and Biotechnology, SASTRA Deemed-to-be-University, Thanjavur 613401, Tamil Nadu, India.
| | - Saravanan Sekaran
- School of Chemical and Biotechnology, SASTRA Deemed-to-be-University, Thanjavur 613401, Tamil Nadu, India; Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA Deemed-to-be-University, Thanjavur 613401, Tamil Nadu, India
| | - Diraviyam Thirumalai
- School of Chemical and Biotechnology, SASTRA Deemed-to-be-University, Thanjavur 613401, Tamil Nadu, India
| | - Balamurugan Palaniappan
- School of Chemical and Biotechnology, SASTRA Deemed-to-be-University, Thanjavur 613401, Tamil Nadu, India
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10
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Byrne C, Belnou M, Baulieu E, Lequin O, Jacquot Y. Electronic circular dichroism and nuclear magnetic resonance studies of peptides derived from the FKBP52‐interacting β‐turn of the hERα ligand‐binding domain. Pept Sci (Hoboken) 2019. [DOI: 10.1002/pep2.24113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Cillian Byrne
- Sorbonne Université, Ecole Normale SupérieurePSL University, CNRS UMR 7203, Laboratoire des Biomolécules Paris France
- Institut Baulieu, Université Paris‐SaclayINSERM UMR 1195, Neuroprotection and Neuroregeneration Le Kremlin Bicêtre France
| | - Mathilde Belnou
- Sorbonne Université, Ecole Normale SupérieurePSL University, CNRS UMR 7203, Laboratoire des Biomolécules Paris France
| | - Etienne‐Emile Baulieu
- Institut Baulieu, Université Paris‐SaclayINSERM UMR 1195, Neuroprotection and Neuroregeneration Le Kremlin Bicêtre France
| | - Olivier Lequin
- Sorbonne Université, Ecole Normale SupérieurePSL University, CNRS UMR 7203, Laboratoire des Biomolécules Paris France
| | - Yves Jacquot
- Sorbonne Université, Ecole Normale SupérieurePSL University, CNRS UMR 7203, Laboratoire des Biomolécules Paris France
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11
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Mueed Z, Tandon P, Maurya SK, Deval R, Kamal MA, Poddar NK. Tau and mTOR: The Hotspots for Multifarious Diseases in Alzheimer's Development. Front Neurosci 2019; 12:1017. [PMID: 30686983 PMCID: PMC6335350 DOI: 10.3389/fnins.2018.01017] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022] Open
Abstract
The hyperphosphorylation of tau protein and the overexpression of mTOR are considered to be the driving force behind Aβ plaques and Neurofibrillay Tangles (NFT's), hallmarks of Alzheimer's disease (AD). It is now evident that miscellaneous diseases such as Diabetes, Autoimmune diseases, Cancer, etc. are correlated with AD. Therefore, we reviewed the literature on the causes of AD and investigated the association of tau and mTOR with other diseases. We have discussed the role of insulin deficiency in diabetes, activated microglial cells, and dysfunction of blood-brain barrier (BBB) in Autoimmune diseases, Presenilin 1 in skin cancer, increased reactive species in mitochondrial dysfunction and deregulated Cyclins/CDKs in promoting AD pathogenesis. We have also discussed the possible therapeutics for AD such as GSK3 inactivation therapy, Rechaperoning therapy, Immunotherapy, Hormonal therapy, Metal chelators, Cell cycle therapy, γ-secretase modulators, and Cholinesterase and BACE 1-inhibitors which are thought to serve a major role in combating pathological changes coupled with AD. Recent research about the relationship between mTOR and aging and hepatic Aβ degradation offers possible targets to effectively target AD. Future prospects of AD aims at developing novel drugs and modulators that can potentially improve cell to cell signaling, prevent Aβ plaques formation, promote better release of neurotransmitters and prevent hyperphosphorylation of tau.
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Affiliation(s)
- Zeba Mueed
- Department of Biotechnology, Invertis University, Bareilly, India
| | - Pallavi Tandon
- Department of Biotechnology, Invertis University, Bareilly, India
| | | | - Ravi Deval
- Department of Biotechnology, Invertis University, Bareilly, India
| | - Mohammad A Kamal
- King Fahad Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Enzymoics, Hebersham, NSW, Australia.,Novel Global Community Educational Foundation, Hebersham, NSW, Australia
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12
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Ghartey-Kwansah G, Li Z, Feng R, Wang L, Zhou X, Chen FZ, Xu MM, Jones O, Mu Y, Chen S, Bryant J, Isaacs WB, Ma J, Xu X. Comparative analysis of FKBP family protein: evaluation, structure, and function in mammals and Drosophila melanogaster. BMC DEVELOPMENTAL BIOLOGY 2018; 18:7. [PMID: 29587629 PMCID: PMC5870485 DOI: 10.1186/s12861-018-0167-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 03/12/2018] [Indexed: 12/19/2022]
Abstract
Background FK506-binding proteins (FKBPs) have become the subject of considerable interest in several fields, leading to the identification of several cellular and molecular pathways in which FKBPs impact prenatal development and pathogenesis of many human diseases. Main body This analysis revealed differences between how mammalian and Drosophila FKBPs mechanisms function in relation to the immunosuppressant drugs, FK506 and rapamycin. Differences that could be used to design insect-specific pesticides. (1) Molecular phylogenetic analysis of FKBP family proteins revealed that the eight known Drosophila FKBPs share homology with the human FKBP12. This indicates a close evolutionary relationship, and possible origination from a common ancestor. (2) The known FKBPs contain FK domains, that is, a prolyl cis/trans isomerase (PPIase) domain that mediates immune suppression through inhibition of calcineurin. The dFKBP59, CG4735/Shutdown, CG1847, and CG5482 have a Tetratricopeptide receptor domain at the C-terminus, which regulates transcription and protein transportation. (3) FKBP51 and FKBP52 (dFKBP59), along with Cyclophilin 40 and protein phosphatase 5, function as Hsp90 immunophilin co-chaperones within steroid receptor-Hsp90 heterocomplexes. These immunophilins are potential drug targets in pathways associated with normal physiology and may be used to treat a variety of steroid-based diseases by targeting exocytic/endocytic cycling and vesicular trafficking. (4) By associating with presinilin, a critical component of the Notch signaling pathway, FKBP14 is a downstream effector of Notch activation at the membrane. Meanwhile, Shutdown associates with transposons in the PIWI-interacting RNA pathway, playing a crucial role in both germ cells and ovarian somas. Mutations in or silencing of dFKBPs lead to early embryonic lethality in Drosophila. Therefore, further understanding the mechanisms of FK506 and rapamycin binding to immunophilin FKBPs in endocrine, cardiovascular, and neurological function in both mammals and Drosophila would provide prospects in generating unique, insect specific therapeutics targeting the above cellular signaling pathways. Conclusion This review will evaluate the functional roles of FKBP family proteins, and systematically summarize the similarities and differences between FKBP proteins in Drosophila and Mammals. Specific therapeutics targeting cellular signaling pathways will also be discussed.
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Affiliation(s)
- George Ghartey-Kwansah
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, 710062, China.,Laboratory of Cell Biology, Genetics and Developmental Biology, Shaanxi Normal University College of Life Sciences, Xi'an, 710062, China
| | - Zhongguang Li
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, 710062, China.,Laboratory of Cell Biology, Genetics and Developmental Biology, Shaanxi Normal University College of Life Sciences, Xi'an, 710062, China
| | - Rui Feng
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, 710062, China.,Laboratory of Cell Biology, Genetics and Developmental Biology, Shaanxi Normal University College of Life Sciences, Xi'an, 710062, China
| | - Liyang Wang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, 710062, China.,Laboratory of Cell Biology, Genetics and Developmental Biology, Shaanxi Normal University College of Life Sciences, Xi'an, 710062, China
| | - Xin Zhou
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, 710062, China.,Laboratory of Cell Biology, Genetics and Developmental Biology, Shaanxi Normal University College of Life Sciences, Xi'an, 710062, China.,Ohio State University College of Medicine, Columbus, OH, USA
| | | | - Meng Meng Xu
- Department of Pharmacology, Duke University Medical Center, Durham, NC, USA
| | - Odell Jones
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Yulian Mu
- State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | | | - Joseph Bryant
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Jianjie Ma
- Ohio State University College of Medicine, Columbus, OH, USA
| | - Xuehong Xu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, 710062, China. .,Laboratory of Cell Biology, Genetics and Developmental Biology, Shaanxi Normal University College of Life Sciences, Xi'an, 710062, China.
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13
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Dilworth D, Gudavicius G, Xu X, Boyce AKJ, O’Sullivan C, Serpa JJ, Bilenky M, Petrochenko EV, Borchers CH, Hirst M, Swayne LA, Howard P, Nelson CJ. The prolyl isomerase FKBP25 regulates microtubule polymerization impacting cell cycle progression and genomic stability. Nucleic Acids Res 2018; 46:2459-2478. [PMID: 29361176 PMCID: PMC5861405 DOI: 10.1093/nar/gky008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 12/14/2017] [Accepted: 01/12/2018] [Indexed: 12/25/2022] Open
Abstract
FK506 binding proteins (FKBPs) catalyze the interconversion of cis-trans proline conformers in proteins. Importantly, FK506 drugs have anti-cancer and neuroprotective properties, but the effectors and mechanisms underpinning these properties are not well understood because the cellular function(s) of most FKBP proteins are unclear. FKBP25 is a nuclear prolyl isomerase that interacts directly with nucleic acids and is associated with several DNA/RNA binding proteins. Here, we show the catalytic FKBP domain binds microtubules (MTs) directly to promote their polymerization and stabilize the MT network. Furthermore, FKBP25 associates with the mitotic spindle and regulates entry into mitosis. This interaction is important for mitotic spindle dynamics, as we observe increased chromosome instability in FKBP25 knockdown cells. Finally, we provide evidence that FKBP25 association with chromatin is cell-cycle regulated by Protein Kinase C phosphorylation. This disrupts FKBP25-DNA contacts during mitosis while maintaining its interaction with the spindle apparatus. Collectively, these data support a model where FKBP25 association with chromatin and MTs is carefully choreographed to ensure faithful genome duplication. Additionally, they highlight that FKBP25 is a MT-associated FK506 receptor and potential therapeutic target in MT-associated diseases.
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Affiliation(s)
- David Dilworth
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Geoff Gudavicius
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Xiaoxue Xu
- Division of Medical Sciences and Island Medical Program, University of Victoria, Victoria V8P 5C2, Canada
| | - Andrew K J Boyce
- Division of Medical Sciences and Island Medical Program, University of Victoria, Victoria V8P 5C2, Canada
| | - Connor O’Sullivan
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Jason J Serpa
- University of Victoria Genome BC Proteomics Centre, Vancouver Island Technology Park, Victoria, BC, V8Z 7X8, Canada
| | - Misha Bilenky
- BC Cancer Agency Genome Sciences Centre and the Department of Microbiology & Immunology, Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Evgeniy V Petrochenko
- University of Victoria Genome BC Proteomics Centre, Vancouver Island Technology Park, Victoria, BC, V8Z 7X8, Canada
| | - Christoph H Borchers
- University of Victoria Genome BC Proteomics Centre, Vancouver Island Technology Park, Victoria, BC, V8Z 7X8, Canada
| | - Martin Hirst
- BC Cancer Agency Genome Sciences Centre and the Department of Microbiology & Immunology, Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Leigh Anne Swayne
- Division of Medical Sciences and Island Medical Program, University of Victoria, Victoria V8P 5C2, Canada
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Perry Howard
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Christopher J Nelson
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
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14
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Decourt B, Lahiri DK, Sabbagh MN. Targeting Tumor Necrosis Factor Alpha for Alzheimer's Disease. Curr Alzheimer Res 2017; 14:412-425. [PMID: 27697064 DOI: 10.2174/1567205013666160930110551] [Citation(s) in RCA: 245] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/10/2016] [Accepted: 09/22/2016] [Indexed: 01/06/2023]
Abstract
Alzheimer's disease (AD) affects an estimated 44 million individuals worldwide, yet no therapeutic intervention is available to stop the progression of the dementia. Neuropathological hallmarks of AD are extracellular deposits of amyloid beta (Aβ) peptides assembled in plaques, intraneuronal accumulation of hyperphosphorylated tau protein forming tangles, and chronic inflammation. A pivotal molecule in inflammation is the pro-inflammatory cytokine TNF-α. Several lines of evidence using genetic and pharmacological manipulations indicate that TNF-α signaling exacerbates both Aβ and tau pathologies in vivo. Interestingly, preventive and intervention anti-inflammatory strategies demonstrated a reduction in brain pathology and an amelioration of cognitive function in rodent models of AD. Phase I and IIa clinical trials suggest that TNF-α inhibitors might slow down cognitive decline and improve daily activities in AD patients. In the present review, we summarize the evidence pointing towards a beneficial role of anti-TNF-α therapies to prevent or slow the progression of AD. We also present possible physical and pharmacological interventions to modulate TNF-α signaling in AD subjects along with their limitations.
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Affiliation(s)
- Boris Decourt
- Banner Sun Health Research Institute, 10515 W. Santa Fe Dr., Sun City AZ 85351, United States
| | - Debomoy K Lahiri
- Institute of Psychiatry Research, Department of Psychiatry, School of Medicine, Indiana University-Purdue University, Indianapolis, IN, United States
| | - Marwan N Sabbagh
- Alzheimer's and Memory Disorders Division, Barrow Neurological Institute, 240 West Thomas, Ste 301, Phoenix, AZ 85013, United States
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15
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Hampel M, Blasco J, Babbucci M, Ferraresso S, Bargelloni L, Milan M. Transcriptome analysis of the brain of the sea bream (Sparus aurata) after exposure to human pharmaceuticals at realistic environmental concentrations. MARINE ENVIRONMENTAL RESEARCH 2017; 129:36-45. [PMID: 28434674 DOI: 10.1016/j.marenvres.2017.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 04/09/2017] [Accepted: 04/09/2017] [Indexed: 06/07/2023]
Abstract
Human pharmaceuticals such as Acetaminophen, Atenolol and Carbamazepine are pseudo persistent aquatic pollutants with yet unknown sub-lethal effects at environmentally relevant concentrations. Gilthead seabream (Sparus aurata) were exposed to Acetaminophen: 31.90 ± 11.07 μg L-1; Atenolol: 0.95 ± 0.38 μg L-1 and Carbamazepine: 6.95 ± 0.13 μg L-1 in a 28 day flow through experiment to (1) determine whether exposure to low concentrations in the μg·L-1 range of the pharmaceuticals alters the brain transcriptome and, (2) identify different expression profiles and treatment specific modes of action and pathways. Despite low exposure concentrations, 411, 7 and 612 differently expressed transcripts were identified in the individual treatments with Acetaminophen, Atenolol and Carbamazepine, respectively. Functional analyses of differentially expressed genes revealed a significant over representation of several biological processes, cellular compartment features and molecular functions for both Acetaminophen and Carbamazepine treatments. Overall, the results obtained in seabream brain suggest similar physiological responses to those observed in humans also at environmental concentrations, as well as the existence of treatment specific processes that may be useful for the development of biomarkers of contamination.
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Affiliation(s)
- Miriam Hampel
- Department for Physical Chemistry, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cadiz, Spain; University Institute for Marine Research (INMAR), 11510 Puerto Real, Cadiz, Spain.
| | - Julian Blasco
- Andalusian Institute for Marine Sciences, Department of Ecology and Coastal Management, Campus Universitario Río San Pedro s/n, 11519 Puerto Real, Spain
| | - Massimiliano Babbucci
- Department of Comparative Biomedicine and Food Science, University of Padova, I-35020 Legnaro, Italy
| | - Serena Ferraresso
- Department of Comparative Biomedicine and Food Science, University of Padova, I-35020 Legnaro, Italy
| | - Luca Bargelloni
- Department of Comparative Biomedicine and Food Science, University of Padova, I-35020 Legnaro, Italy
| | - Massimo Milan
- Department of Comparative Biomedicine and Food Science, University of Padova, I-35020 Legnaro, Italy
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16
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Lackie RE, Maciejewski A, Ostapchenko VG, Marques-Lopes J, Choy WY, Duennwald ML, Prado VF, Prado MAM. The Hsp70/Hsp90 Chaperone Machinery in Neurodegenerative Diseases. Front Neurosci 2017; 11:254. [PMID: 28559789 PMCID: PMC5433227 DOI: 10.3389/fnins.2017.00254] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/20/2017] [Indexed: 12/12/2022] Open
Abstract
The accumulation of misfolded proteins in the human brain is one of the critical features of many neurodegenerative diseases, including Alzheimer's disease (AD). Assembles of beta-amyloid (Aβ) peptide—either soluble (oligomers) or insoluble (plaques) and of tau protein, which form neurofibrillary tangles, are the major hallmarks of AD. Chaperones and co-chaperones regulate protein folding and client maturation, but they also target misfolded or aggregated proteins for refolding or for degradation, mostly by the proteasome. They form an important line of defense against misfolded proteins and are part of the cellular quality control system. The heat shock protein (Hsp) family, particularly Hsp70 and Hsp90, plays a major part in this process and it is well-known to regulate protein misfolding in a variety of diseases, including tau levels and toxicity in AD. However, the role of Hsp90 in regulating protein misfolding is not yet fully understood. For example, knockdown of Hsp90 and its co-chaperones in a Caenorhabditis elegans model of Aβ misfolding leads to increased toxicity. On the other hand, the use of Hsp90 inhibitors in AD mouse models reduces Aβ toxicity, and normalizes synaptic function. Stress-inducible phosphoprotein 1 (STI1), an intracellular co-chaperone, mediates the transfer of clients from Hsp70 to Hsp90. Importantly, STI1 has been shown to regulate aggregation of amyloid-like proteins in yeast. In addition to its intracellular function, STI1 can be secreted by diverse cell types, including astrocytes and microglia and function as a neurotrophic ligand by triggering signaling via the cellular prion protein (PrPC). Extracellular STI1 can prevent Aβ toxic signaling by (i) interfering with Aβ binding to PrPC and (ii) triggering pro-survival signaling cascades. Interestingly, decreased levels of STI1 in C. elegans can also increase toxicity in an amyloid model. In this review, we will discuss the role of intracellular and extracellular STI1 and the Hsp70/Hsp90 chaperone network in mechanisms underlying protein misfolding in neurodegenerative diseases, with particular focus on AD.
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Affiliation(s)
- Rachel E Lackie
- Molecular Medicine, Robarts Research Institute, University of Western OntarioLondon, ON, Canada.,Program in Neuroscience, University of Western OntarioLondon, ON, Canada
| | - Andrzej Maciejewski
- Molecular Medicine, Robarts Research Institute, University of Western OntarioLondon, ON, Canada.,Department of Biochemistry, University of Western OntarioLondon, ON, Canada
| | - Valeriy G Ostapchenko
- Molecular Medicine, Robarts Research Institute, University of Western OntarioLondon, ON, Canada
| | - Jose Marques-Lopes
- Molecular Medicine, Robarts Research Institute, University of Western OntarioLondon, ON, Canada
| | - Wing-Yiu Choy
- Department of Biochemistry, University of Western OntarioLondon, ON, Canada
| | - Martin L Duennwald
- Department of Pathology and Laboratory Medicine, University of Western OntarioLondon, ON, Canada
| | - Vania F Prado
- Molecular Medicine, Robarts Research Institute, University of Western OntarioLondon, ON, Canada.,Program in Neuroscience, University of Western OntarioLondon, ON, Canada.,Department of Physiology and Pharmacology, University of Western OntarioLondon, ON, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western OntarioLondon, ON, Canada
| | - Marco A M Prado
- Molecular Medicine, Robarts Research Institute, University of Western OntarioLondon, ON, Canada.,Program in Neuroscience, University of Western OntarioLondon, ON, Canada.,Department of Physiology and Pharmacology, University of Western OntarioLondon, ON, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western OntarioLondon, ON, Canada
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17
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The antimalarial action of FK506 and rapamycin: evidence for a direct effect on FK506-binding protein PfFKBP35. Parasitology 2017; 144:869-876. [PMID: 28274284 DOI: 10.1017/s0031182017000245] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
FK506 and rapamycin (Rap) are immunosuppressive drugs that act principally on T-lymphocytes. The receptors for both drugs are FK506-binding proteins (FKBPs), but the molecular mechanisms of immunosuppression differ. An FK506-FKBP complex inhibits the protein phosphatase calcineurin, blocking a key step in T-cell activation, while the Rap -FKBP complex binds to the protein kinase target of rapamycin (TOR), which is involved in a subsequent signalling pathway. Both drugs, and certain non-immunosuppressive compounds related to FK506, have potent antimalarial activity. There is however conflicting evidence on the involvement of Plasmodium calcineurin in the action of FK506, and the parasite lacks an apparent TOR homologue. We therefore set out to establish whether inhibition of the Plasmodium falciparum FKBP PfFKBP35 itself might be responsible for the antimalarial effects of FK506 and Rap. Similarities in the antiparasitic actions of FK506 and Rap would constitute indirect evidence for this hypothesis. FK506 and Rap acted indistinguishably on: (i) specificity for different intra-erythrocytic stages in culture, (ii) kinetics of killing or irreversible growth arrest of parasites and (iii) interactions with other antimalarial agents. Furthermore, PfFKBP35's inhibitory effect on calcineurin was independent of FK506 under a range of conditions, suggesting that calcineurin is unlikely to be involved in the antimalarial action of FK506.
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18
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Dunyak BM, Gestwicki JE. Peptidyl-Proline Isomerases (PPIases): Targets for Natural Products and Natural Product-Inspired Compounds. J Med Chem 2016; 59:9622-9644. [PMID: 27409354 DOI: 10.1021/acs.jmedchem.6b00411] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Peptidyl-proline isomerases (PPIases) are a chaperone superfamily comprising the FK506-binding proteins (FKBPs), cyclophilins, and parvulins. PPIases catalyze the cis/trans isomerization of proline, acting as a regulatory switch during folding, activation, and/or degradation of many proteins. These "clients" include proteins with key roles in cancer, neurodegeneration, and psychiatric disorders, suggesting that PPIase inhibitors could be important therapeutics. However, the active site of PPIases is shallow, solvent-exposed, and well conserved between family members, making selective inhibitor design challenging. Despite these hurdles, macrocyclic natural products, including FK506, rapamycin, and cyclosporin, bind PPIases with nanomolar or better affinity. De novo attempts to derive new classes of inhibitors have been somewhat less successful, often showcasing the "undruggable" features of PPIases. Interestingly, the most potent of these next-generation molecules tend to integrate features of the natural products, including macrocyclization or proline mimicry strategies. Here, we review recent developments and ongoing challenges in the inhibition of PPIases, with a focus on how natural products might inform the creation of potent and selective inhibitors.
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Affiliation(s)
- Bryan M Dunyak
- Department of Biological Chemistry, University of Michigan Medical School , 1150 W. Medical Center Drive, Ann Arbor, Michigan 48109, United States.,Department of Pharmaceutical Chemistry, University of California at San Francisco , 675 Nelson Rising Lane, San Francisco, California 94158, United States
| | - Jason E Gestwicki
- Department of Pharmaceutical Chemistry, University of California at San Francisco , 675 Nelson Rising Lane, San Francisco, California 94158, United States
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19
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Young MJ, Geiszler PC, Pardon MC. A novel role for the immunophilin FKBP52 in motor coordination. Behav Brain Res 2016; 313:97-110. [PMID: 27418439 DOI: 10.1016/j.bbr.2016.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/09/2016] [Accepted: 07/10/2016] [Indexed: 02/01/2023]
Abstract
FKBP52 is a ubiquitously distributed immunophilin that has been associated with wide-ranging functions in cell signalling as well as hormonal and stress responses. Amongst other pathways, it acts via complex-formation with corticosteroid receptors and has consequently been associated with stress- and age- related neurodegenerative disorders including Alzheimer's and Parkinson's diseases. Reduced levels of FKBP52 have been linked to tau dysfunction and amyloid beta toxicity in AD. However, FKBP52's role in cognition and neurodegenerative disorder-like phenotypes remain to be elucidated. The present study aimed therefore at investigating the cognitive and behavioural effects of reduced FKBP52 levels of genetically modified mice during ageing. Female and male FKBP52(+/+), FKBP52(+/-) and FKBP52(-/-) mice were compared at two-, ten-, twelve-, fifteen- and eighteen-months-of-age in a series of behavioural tests covering specie-specific behaviour, motor activity and coordination, fear-, spatial and recognition memory as well as curiosity and emotionality. Whilst cognitively unimpaired, FKBP52(+/-) mice performed worse on an accelerating rotating rod than FKBP52(+/+) littermates across all age-groups suggesting that FKBP52 is involved in processes controlling motor coordination. This deficit did not exacerbate with age but did worsen with repeated testing; pointing towards a role for FKBP52 in learning of tasks requiring motor coordination abilities. This study contributes to the knowledge base of FKBP52's implication in neurodegenerative diseases by demonstrating that FKBP52 by itself does not directly affect cognition and may therefore rather play an indirect, modulatory role in the functional pathology of AD, whereas it directly affects motor coordination, an early sign of neurodegenerative damages to the brain.
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Affiliation(s)
- Matthew J Young
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom
| | - Philippine C Geiszler
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom
| | - Marie-Christine Pardon
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom.
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20
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Fields JA, Overk C, Adame A, Florio J, Mante M, Pineda A, Desplats P, Rockenstein E, Achim C, Masliah E. Neuroprotective effects of the immunomodulatory drug FK506 in a model of HIV1-gp120 neurotoxicity. J Neuroinflammation 2016; 13:120. [PMID: 27220536 PMCID: PMC4879748 DOI: 10.1186/s12974-016-0585-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 05/16/2016] [Indexed: 11/12/2022] Open
Abstract
Background HIV-associated neurocognitive disorders (HAND) continue to be a common morbidity associated with chronic HIV infection. It has been shown that HIV proteins (e.g., gp120) released from infected microglial/macrophage cells can cause neuronal damage by triggering inflammation and oxidative stress, activating aberrant kinase pathways, and by disrupting mitochondrial function and biogenesis. Previous studies have shown that FK506, an immunophilin ligand that modulates inflammation and mitochondrial function and inhibits calcineurin, is capable of rescuing the neurodegenerative pathology in models of Parkinson’s disease, Alzheimer’s disease, and Huntington’s disease. In this context, the main objective of this study was to evaluate if FK506 could rescue the neuronal degeneration and mitochondrial alterations in a transgenic (tg) animal model of HIV1-gp120 neurotoxicity. Methods GFAP-gp120 tg mice were treated with FK506 and analyzed for neuropathology, behavior, mitochondrial markers, and calcium flux by two-photon microscopy. Results We found that FK506 reduced the neuronal cell loss and neuro-inflammation in the gp120 tg mice. Moreover, while vehicle-treated gp120 tg mice displayed damaged mitochondria and increased neuro-inflammatory markers, FK506 rescued the morphological mitochondrial alterations and neuro-inflammation while increasing levels of optic atrophy 1 and mitofusin 1. By two-photon microscopy, calcium levels were not affected in the gp120 tg mice and no effects of FK506 were detected. However, at a functional level, FK506 ameliorated the gp120 tg mice hyperactivity in the open field. Conclusions Together, these results suggest that FK506 might be potentially neuroprotective in patients with HAND by mitigating inflammation and mitochondrial alterations.
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Affiliation(s)
- Jerel A Fields
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Cassia Overk
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Anthony Adame
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Jazmin Florio
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Michael Mante
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Andrea Pineda
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Paula Desplats
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Edward Rockenstein
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Cristian Achim
- Department of Psychiatry, University of California San Diego, La Jolla, CA, USA
| | - Eliezer Masliah
- Department of Pathology, University of California San Diego, La Jolla, CA, USA. .,Department of Neurosciences, University of California San Diego, La Jolla, CA, USA.
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21
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Bensalem J, Dal-Pan A, Gillard E, Calon F, Pallet V. Protective effects of berry polyphenols against age-related cognitive impairment. ACTA ACUST UNITED AC 2016. [DOI: 10.3233/nua-150051] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Julien Bensalem
- Univ. de Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33000 Bordeaux, France
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33000 Bordeaux, France
- Activ’Inside, 33500 Libourne, France
| | - Alexandre Dal-Pan
- Faculté de Pharmacie, Université Laval, Centre de Recherche du CHU de Québec, Québec, Canada
- Institut des Nutraceutiques et des Aliments Fonctionnels, Université Laval, Québec, Canada
- OptiNutriBrain International Associated Laboratory (NutriNeuro France-INAF Canada), 33000 Bordeaux, France
| | - Elodie Gillard
- Faculté de Pharmacie, Université Laval, Centre de Recherche du CHU de Québec, Québec, Canada
| | - Frédéric Calon
- Faculté de Pharmacie, Université Laval, Centre de Recherche du CHU de Québec, Québec, Canada
- Institut des Nutraceutiques et des Aliments Fonctionnels, Université Laval, Québec, Canada
- OptiNutriBrain International Associated Laboratory (NutriNeuro France-INAF Canada), 33000 Bordeaux, France
| | - Véronique Pallet
- Univ. de Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33000 Bordeaux, France
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33000 Bordeaux, France
- Bordeaux INP, NutriNeuro, UMR 1286, F-33000, Bordeaux, France
- OptiNutriBrain International Associated Laboratory (NutriNeuro France-INAF Canada), 33000 Bordeaux, France
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22
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Prakash A, Shin J, Rajan S, Yoon HS. Structural basis of nucleic acid recognition by FK506-binding protein 25 (FKBP25), a nuclear immunophilin. Nucleic Acids Res 2016; 44:2909-25. [PMID: 26762975 PMCID: PMC4824100 DOI: 10.1093/nar/gkw001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 12/30/2015] [Indexed: 12/13/2022] Open
Abstract
The nuclear immunophilin FKBP25 interacts with chromatin-related proteins and transcription factors and is suggested to interact with nucleic acids. Currently the structural basis of nucleic acid binding by FKBP25 is unknown. Here we determined the nuclear magnetic resonance (NMR) solution structure of full-length human FKBP25 and studied its interaction with DNA. The FKBP25 structure revealed that the N-terminal helix-loop-helix (HLH) domain and C-terminal FK506-binding domain (FKBD) interact with each other and that both of the domains are involved in DNA binding. The HLH domain forms major-groove interactions and the basic FKBD loop cooperates to form interactions with an adjacent minor-groove of DNA. The FKBP25–DNA complex model, supported by NMR and mutational studies, provides structural and mechanistic insights into the nuclear immunophilin-mediated nucleic acid recognition.
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Affiliation(s)
- Ajit Prakash
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551, Singapore
| | - Joon Shin
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551, Singapore
| | - Sreekanth Rajan
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551, Singapore
| | - Ho Sup Yoon
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551, Singapore Department of Genetic Engineering, College of Life Sciences, Kyung Hee University Yongin-si, Gyeonggi-do 446-701, Republic of Korea
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23
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Proteomics in Traditional Chinese Medicine with an Emphasis on Alzheimer's Disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:393510. [PMID: 26557146 PMCID: PMC4628675 DOI: 10.1155/2015/393510] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 07/27/2015] [Indexed: 12/12/2022]
Abstract
In recent years, there has been an increasing worldwide interest in traditional Chinese medicine (TCM). This increasing demand for TCM needs to be accompanied by a deeper understanding of the mechanisms of action of TCM-based therapy. However, TCM is often described as a concept of Chinese philosophy, which is incomprehensible for Western medical society, thereby creating a gap between TCM and Western medicine (WM). In order to meet this challenge, TCM research has applied proteomics technologies for exploring the mechanisms of action of TCM treatment. Proteomics enables TCM researchers to oversee various pathways that are affected by treatment, as well as the dynamics of their interactions with one another. This review discusses the utility of comparative proteomics to better understand how TCM treatment may be used as a complementary therapy for Alzheimer's disease (AD). Additionally, we review the data from comparative AD-related TCM proteomics studies and establish the relevance of the data with available AD hypotheses, most notably regarding the ubiquitin proteasome system (UPS).
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24
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Jo GA, Lee JM, No G, Kang DS, Kim SH, Ahn SH, Kong IS. Isolation and characterization of a 17-kDa FKBP-type peptidyl-prolyl cis/trans isomerase from Vibrio anguillarum. Protein Expr Purif 2015; 110:130-7. [DOI: 10.1016/j.pep.2015.02.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 02/24/2015] [Accepted: 02/25/2015] [Indexed: 11/29/2022]
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25
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Blair LJ, Baker JD, Sabbagh JJ, Dickey CA. The emerging role of peptidyl-prolyl isomerase chaperones in tau oligomerization, amyloid processing, and Alzheimer's disease. J Neurochem 2015; 133:1-13. [PMID: 25628064 DOI: 10.1111/jnc.13033] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/12/2014] [Accepted: 01/05/2015] [Indexed: 12/20/2022]
Abstract
Peptidyl-prolyl cis/trans isomerases (PPIases), a unique family of molecular chaperones, regulate protein folding at proline residues. These residues are abundant within intrinsically disordered proteins, like the microtubule-associated protein tau. Tau has been shown to become hyperphosphorylated and accumulate as one of the two main pathological hallmarks in Alzheimer's disease, the other being amyloid beta (Ab). PPIases, including Pin1, FK506-binding protein (FKBP) 52, FKBP51, and FKBP12, have been shown to interact with and regulate tau biology. This interaction is particularly important given the numerous proline-directed phosphorylation sites found on tau and the role phosphorylation has been found to play in pathogenesis. This regulation then affects downstream aggregation and oligomerization of tau. However, many PPIases have yet to be explored for their effects on tau biology, despite the high likelihood of interaction based on proline content. Moreover, Pin1, FKBP12, FKBP52, cyclophilin (Cyp) A, CypB, and CypD have been shown to also regulate Ab production or the toxicity associated with Ab pathology. Therefore, PPIases directly and indirectly regulate pathogenic protein multimerization in Alzheimer's disease and represent a family rich in targets for modulating the accumulation and toxicity.
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Affiliation(s)
- Laura J Blair
- Department of Molecular Medicine, Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida, USA
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26
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The Ubiquitin-Proteasome System and Molecular Chaperone Deregulation in Alzheimer's Disease. Mol Neurobiol 2015; 53:905-931. [PMID: 25561438 DOI: 10.1007/s12035-014-9063-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 12/09/2014] [Indexed: 12/18/2022]
Abstract
One of the shared hallmarks of neurodegenerative diseases is the accumulation of misfolded proteins. Therefore, it is suspected that normal proteostasis is crucial for neuronal survival in the brain and that the malfunction of this mechanism may be the underlying cause of neurodegenerative diseases. The accumulation of amyloid plaques (APs) composed of amyloid-beta peptide (Aβ) aggregates and neurofibrillary tangles (NFTs) composed of misfolded Tau proteins are the defining pathological markers of Alzheimer's disease (AD). The accumulation of these proteins indicates a faulty protein quality control in the AD brain. An impaired ubiquitin-proteasome system (UPS) could lead to negative consequences for protein regulation, including loss of function. Another pivotal mechanism for the prevention of misfolded protein accumulation is the utilization of molecular chaperones. Molecular chaperones, such as heat shock proteins (HSPs) and FK506-binding proteins (FKBPs), are highly involved in protein regulation to ensure proper folding and normal function. In this review, we elaborate on the molecular basis of AD pathophysiology using recent data, with a particular focus on the role of the UPS and molecular chaperones as the defensive mechanism against misfolded proteins that have prion-like properties. In addition, we propose a rational therapy approach based on this mechanism.
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27
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Guy NC, Garcia YA, Sivils JC, Galigniana MD, Cox MB. Functions of the Hsp90-binding FKBP immunophilins. Subcell Biochem 2015; 78:35-68. [PMID: 25487015 DOI: 10.1007/978-3-319-11731-7_2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hsp90 functionally interacts with a broad array of client proteins, but in every case examined Hsp90 is accompanied by one or more co-chaperones. One class of co-chaperone contains a tetratricopeptide repeat domain that targets the co-chaperone to the C-terminal region of Hsp90. Within this class are Hsp90-binding peptidylprolyl isomerases, most of which belong to the FK506-binding protein (FKBP) family. Despite the common association of FKBP co-chaperones with Hsp90, it is now clear that the client protein influences, and is influenced by, the particular FKBP bound to Hsp90. Examples include Xap2 in aryl hydrocarbon receptor complexes and FKBP52 in steroid receptor complexes. In this chapter, we discuss the known functional roles played by FKBP co-chaperones and, where possible, relate distinctive functions to structural differences between FKBP members.
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Affiliation(s)
- Naihsuan C Guy
- Department of Biological Sciences, Border Biomedical Research Center, University of Texas at El Paso, 79968, El Paso, TX, USA,
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28
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Hung TC, Chang TT, Fan MJ, Lee CC, Chen CYC. In Silico Insight into Potent of Anthocyanin Regulation of FKBP52 to Prevent Alzheimer's Disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2014; 2014:450592. [PMID: 24899909 PMCID: PMC4036721 DOI: 10.1155/2014/450592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/03/2014] [Accepted: 01/03/2014] [Indexed: 02/01/2023]
Abstract
Alzheimer's disease (AD) is caused by the hyperphosphorylation of Tau protein aggregation. FKBP52 (FK506 binding protein 52) has been found to inhibit Tau protein aggregation. This study found six different kinds of anthocyanins that have high binding potential. After analyzing the docking positions, hydrophobic interactions, and hydrogen bond interactions, several amino acids were identified that play important roles in protein and ligand interaction. The proteins' variation is described using eigenvectors and the distance between the amino acids during a molecular dynamics simulation (MD). This study investigates the three loops based around Glu85, Tyr113, and Lys121-all of which are important in inducing FKBP52 activation. By performing a molecular dynamic simulation process between unbound proteins and the protein complex with FK506, it was found that ligand targets that docked onto the FK1 domain will decrease the distance between Glu85/Tyr113 and Glu85/Lys121. The FKBP52 structure variation may induce FKBP52 activation and inhibit Tau protein aggregation. The results indicate that anthocyanins might change the conformation of FKBP52 during binding. In addition, the purple anthocyanins, such as cyanidin-3-glucoside and malvidin-3-glucoside, might be better than FK506 in regulating FKBP52 and treating Alzheimer's disease.
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Affiliation(s)
- Tzu-Chieh Hung
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan
| | - Tung-Ti Chang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Ming-Jen Fan
- Department of Biotechnology, Asia University, Taichung 41354, Taiwan
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan
| | - Cheng-Chun Lee
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Calvin Yu-Chian Chen
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
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29
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Ligand-based and structure-based investigation for Alzheimer's disease from traditional chinese medicine. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:364819. [PMID: 24899907 PMCID: PMC4034731 DOI: 10.1155/2014/364819] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 01/12/2014] [Indexed: 11/18/2022]
Abstract
Alzheimer's disease is a neurodegenerative disease that was conventionally thought to be related to the sedimentation of beta-amyloids, but drugs designed according to this hypothesis have generally failed. That FKBP52 can reduce the accumulation of tau proteins, and that Tacrolimus can reduce the pathological changes of tau proteins are new directions away from the long held amyloid-beta-centric concept. Therefore, the screening of traditional Chinese medicine compounds for those with higher affinity towards FKBP52 than Tacrolimus may be a new direction for treating Alzheimer's disease. This study utilizes ligand-based and structure-based methods as the foundation. By utilizing dock scores and the predicted pIC50 from SVM, MLR, and Bayesian Network, several TCM compounds were selected for further analysis of their protein-ligand interactions. Daphnetoxin has higher affinity and complex structure stability than Tacrolimus; Lythrancine II exhibits the most identical trends in FKBP52 interactions as Tacrolimus, and 20-O-(2′E,4′E-decadienoyl)ingenol may be further modified at its hydrocarbon chain to promote interaction with FKBP52. In addition, we observed the residue Tyr113 of FKBP52 may play a key role in protein-ligand interaction. Our results indicate that Daphnetoxin, 20-O-(2′E,4′E-decadienoyl)ingenol, and Lythrancine II may be starting points for further modification as a new type of non-amyloid-beta-centric drug for Alzheimer's disease.
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30
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Tau protein modifications and interactions: their role in function and dysfunction. Int J Mol Sci 2014; 15:4671-713. [PMID: 24646911 PMCID: PMC3975420 DOI: 10.3390/ijms15034671] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 02/11/2014] [Accepted: 03/04/2014] [Indexed: 01/29/2023] Open
Abstract
Tau protein is abundant in the central nervous system and involved in microtubule assembly and stabilization. It is predominantly associated with axonal microtubules and present at lower level in dendrites where it is engaged in signaling functions. Post-translational modifications of tau and its interaction with several proteins play an important regulatory role in the physiology of tau. As a consequence of abnormal modifications and expression, tau is redistributed from neuronal processes to the soma and forms toxic oligomers or aggregated deposits. The accumulation of tau protein is increasingly recognized as the neuropathological hallmark of a number of dementia disorders known as tauopathies. Dysfunction of tau protein may contribute to collapse of cytoskeleton, thereby causing improper anterograde and retrograde movement of motor proteins and their cargos on microtubules. These disturbances in intraneuronal signaling may compromise synaptic transmission as well as trophic support mechanisms in neurons.
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31
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Ikura T, Ito N. Peptidyl-prolyl isomerase activity of FK506 binding protein 12 prevents tau peptide from aggregating. Protein Eng Des Sel 2013; 26:539-46. [DOI: 10.1093/protein/gzt033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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