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Zou L, Tian Y, Zhang Z. Dysfunction of Synaptic Vesicle Endocytosis in Parkinson's Disease. Front Integr Neurosci 2021; 15:619160. [PMID: 34093144 PMCID: PMC8172812 DOI: 10.3389/fnint.2021.619160] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 04/28/2021] [Indexed: 11/25/2022] Open
Abstract
Parkinson’s disease (PD) is the second most common neurodegenerative disorder after Alzheimer’s disease. It is a chronic and progressive disorder estimated to affect at least 4 million people worldwide. Although the etiology of PD remains unclear, it has been found that the dysfunction of synaptic vesicle endocytosis (SVE) in neural terminal happens before the loss of dopaminergic neurons. Recently, accumulating evidence reveals that the PD-linked synaptic genes, including DNAJC6, SYNJ1, and SH3GL2, significantly contribute to the disruptions of SVE, which is vital for the pathogenesis of PD. In addition, the proteins encoded by other PD-associated genes such as SNCA, LRRK2, PRKN, and DJ-1 also play key roles in the regulation of SVE. Here we present the facts about SVE-related genes and discussed their potential relevance to the pathogenesis of PD.
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Affiliation(s)
- Li Zou
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ye Tian
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhentao Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
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Zafar S, Shafiq M, Younas N, Schmitz M, Ferrer I, Zerr I. Prion Protein Interactome: Identifying Novel Targets in Slowly and Rapidly Progressive Forms of Alzheimer's Disease. J Alzheimers Dis 2018; 59:265-275. [PMID: 28671123 DOI: 10.3233/jad-170237] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Rapidly progressive Alzheimer's disease (rpAD) is a variant of AD distinguished by a rapid decline in cognition and short disease duration from onset to death. While attempts to identify rpAD based on biomarker profile classifications have been initiated, the mechanisms which contribute to the rapid decline and prion mimicking heterogeneity in clinical signs are still largely unknown. In this study, we characterized prion protein (PrP) expression, localization, and interactome in rpAD, slow progressive AD, and in non-dementia controls. PrP along with its interacting proteins were affinity purified with magnetic Dynabeads Protein-G, and were identified using Q-TOF-ESI/MS analysis. Our data demonstrated a significant 1.2-fold decrease in di-glycosylated PrP isoforms specifically in rpAD patients. Fifteen proteins appeared to interact with PrP and only two proteins3/4histone H2B-type1-B and zinc alpha-2 protein3/4were specifically bound with PrP isoform isolated from rpAD cases. Our data suggest distinct PrP involvement in association with the altered PrP interacting protein in rpAD, though the pathophysiological significance of these interactions remains to be established.
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Affiliation(s)
- Saima Zafar
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Mohsin Shafiq
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Neelam Younas
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Matthias Schmitz
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Isidre Ferrer
- Institute of Neuropathology, IDIBELL-University Hospital Bellvitge, University of Barcelona, Hospitalet de Llobregat, Spain.,CIBERNED (Network center for biomedical research of neurodegenerative diseases), Institute Carlos III, Ministry of Health, Spain
| | - Inga Zerr
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Göttingen (UMG), Göttingen, Germany
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Lazo JS, McQueeney KE, Sharlow ER. New Approaches to Difficult Drug Targets: The Phosphatase Story. SLAS DISCOVERY 2017; 22:1071-1083. [DOI: 10.1177/2472555217721142] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The drug discovery landscape is littered with promising therapeutic targets that have been abandoned because of insufficient validation, historical screening failures, and inferior chemotypes. Molecular targets once labeled as “undruggable” or “intractable” are now being more carefully interrogated, and while they remain challenging, many target classes are appearing more approachable. Protein tyrosine phosphatases represent an excellent example of a category of molecular targets that have emerged as druggable, with several small molecules and antibodies recently becoming available for further development. In this review, we examine some of the diseases that are associated with protein tyrosine phosphatase dysfunction and use some prototype contemporary strategies to illustrate approaches that are being used to identify small molecules targeting this enzyme class.
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Affiliation(s)
- John S. Lazo
- Department of Pharmacology, Fiske Drug Discovery Laboratory, University of Virginia, Charlottesville, VA, USA
| | - Kelley E. McQueeney
- Department of Pharmacology, Fiske Drug Discovery Laboratory, University of Virginia, Charlottesville, VA, USA
| | - Elizabeth R. Sharlow
- Department of Pharmacology, Fiske Drug Discovery Laboratory, University of Virginia, Charlottesville, VA, USA
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Li YC, Kavalali ET. Synaptic Vesicle-Recycling Machinery Components as Potential Therapeutic Targets. Pharmacol Rev 2017; 69:141-160. [PMID: 28265000 DOI: 10.1124/pr.116.013342] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Presynaptic nerve terminals are highly specialized vesicle-trafficking machines. Neurotransmitter release from these terminals is sustained by constant local recycling of synaptic vesicles independent from the neuronal cell body. This independence places significant constraints on maintenance of synaptic protein complexes and scaffolds. Key events during the synaptic vesicle cycle-such as exocytosis and endocytosis-require formation and disassembly of protein complexes. This extremely dynamic environment poses unique challenges for proteostasis at synaptic terminals. Therefore, it is not surprising that subtle alterations in synaptic vesicle cycle-associated proteins directly or indirectly contribute to pathophysiology seen in several neurologic and psychiatric diseases. In contrast to the increasing number of examples in which presynaptic dysfunction causes neurologic symptoms or cognitive deficits associated with multiple brain disorders, synaptic vesicle-recycling machinery remains an underexplored drug target. In addition, irrespective of the involvement of presynaptic function in the disease process, presynaptic machinery may also prove to be a viable therapeutic target because subtle alterations in the neurotransmitter release may counter disease mechanisms, correct, or compensate for synaptic communication deficits without the need to interfere with postsynaptic receptor signaling. In this article, we will overview critical properties of presynaptic release machinery to help elucidate novel presynaptic avenues for the development of therapeutic strategies against neurologic and neuropsychiatric disorders.
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Affiliation(s)
- Ying C Li
- Departments of Neuroscience (Y.C.L., E.T.K.) and Physiology (E.T.K.), University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ege T Kavalali
- Departments of Neuroscience (Y.C.L., E.T.K.) and Physiology (E.T.K.), University of Texas Southwestern Medical Center, Dallas, Texas
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Pirruccello M, Nandez R, Idevall-Hagren O, Alcazar-Roman A, Abriola L, Berwick SA, Lucast L, Morel D, De Camilli P. Identification of inhibitors of inositol 5-phosphatases through multiple screening strategies. ACS Chem Biol 2014; 9:1359-68. [PMID: 24742366 PMCID: PMC4076014 DOI: 10.1021/cb500161z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
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Phosphoinositides are low abundance
membrane phospholipids that
have key roles in signaling, membrane trafficking, and cytoskeletal
dynamics in all cells. Until recently, strategies for robust and quantitative
development of pharmacological tools for manipulating phosphoinositide
levels have focused selectively on PI(3,4,5)P3 due to the
importance of this lipid in growth factor signaling and cell proliferation.
However, drugs that affect levels of other phosphoinositides have
potential therapeutic applications and will be powerful research tools.
Here, we describe methodology for the high-throughput screening of
small molecule modulators of the inositol 5-phosphatases, which dephosphorylate
PI(4,5)P2 (the precursor for PI(3,4,5)P3) and
PI(3,4,5)P3). We developed three complementary in vitro activity assays, tested hit compounds on a panel
of 5-phosphatases, and monitored efficacy toward various substrates.
Two prominent chemical scaffolds were identified with high nanomolar/low
micromolar activity, with one class showing inhibitory activity toward
all 5-phosphatases tested and the other selective activity toward
OCRL and INPP5B, which are closely related to each other. One highly
soluble OCRL/INPP5B-specific inhibitor shows a direct interaction
with the catalytic domain of INPP5B. The efficacy of this compound
in living cells was validated through its property to enhance actin
nucleation at the cell cortex, a PI(4,5)P2 dependent process,
and to inhibit PI(4,5)P2 dephosphorylation by OCRL (both
overexpressed and endogenous enzyme). The assays and screening strategies
described here are applicable to other phosphoinositide-metabolizing
enzymes, at least several of which have major clinical relevance.
Most importantly, this study identifies the first OCRL/INPP5B specific
inhibitor and provides a platform for the design of more potent inhibitors
of this family of enzymes.
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Affiliation(s)
- Michelle Pirruccello
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Ramiro Nandez
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Olof Idevall-Hagren
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Abel Alcazar-Roman
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Laura Abriola
- Yale
Center for Molecular Discovery, Yale University, West Haven, Connecticut 06516, United States
| | - Shana Alexandra Berwick
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Louise Lucast
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Dayna Morel
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
| | - Pietro De Camilli
- Department
of Cell Biology, Howard Hughes Medical Institute and Program in Cellular
Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven Connecticut 06510, United States
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