1
|
Lorenzo-Betancor O, Mehta S, Ramchandra J, Mumuney S, Schumacher-Schuh AF, Cornejo-Olivas M, Sarapura-Castro EH, Torres L, Inca-Martinez MA, Mazzetti P, Cosentino C, Micheli F, Tumas V, Dieguez E, Raggio V, Borges V, Ferraz HB, Chana-Cuevas P, Jimenez-Del-Rio M, Velez-Pardo C, Moreno S, Lopera F, Orozco-Velez JL, Muñoz-Ospina B, Rieder CRM, Medina-Escobar A, Yearout D, Zabetian CP, Mata IF. Parkinson's Disease Gene Screening in Familial Cases from Central and South America. Mov Disord 2024; 39:1843-1855. [PMID: 39051491 DOI: 10.1002/mds.29931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 05/25/2024] [Accepted: 07/01/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Parkinson's disease (PD) is the second most common neurodegenerative disease following Alzheimer's disease. Nearly 30 causative genes have been identified for PD and related disorders. However, most of these genes were identified in European-derived families, and little is known about their role in Latin American populations. OBJECTIVES Our goal was to assess the spectrum and frequency of pathogenic variants in known PD genes in familial PD patients from Latin America. METHODS We selected 335 PD patients with a family history of PD from the Latin American Research Consortium on the Genetics of PD. We capture-sequenced the coding regions of 26 genes related to neurodegenerative parkinsonism. Of the 335 PD patients, 324 had sufficient sequencing coverage to be analyzed. RESULTS We identified pathogenic variants in 41 individuals (12.7%) in FBXO7, GCH1, LRRK2, PARK7, PINK1, PLA2G6, PRKN, SNCA, and TARDBP, GBA1 risk variants in 25 individuals (7.7%), and variants of uncertain significance in another 24 individuals (7.4%) in ATP13A2, ATP1A3, DNAJC13, DNAJC6, GBA1, LRKK2, PINK1, VPS13C, and VPS35. Of the 70 unique variants identified, 19 were more frequent in Latin Americans than in any other population. CONCLUSIONS This is the first screening of known PD genes in a large cohort of patients with familial PD from Latin America. There were substantial differences in the spectrum of variants observed in comparison to previous findings from PD families of European origin. Our data provide further evidence that differences exist between the genetic architecture of PD in Latinos and European-derived populations. © 2024 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Collapse
Affiliation(s)
- Oswaldo Lorenzo-Betancor
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Seysha Mehta
- Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Janvi Ramchandra
- Genomic Medicine Institute, Cleveland Clinic Foundation Lerner Research Institute, Cleveland, Ohio, USA
- Department of Biochemistry, Case Western Reserve University, Cleveland, Ohio, USA
| | - Sekinat Mumuney
- Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Artur F Schumacher-Schuh
- Department of Pharmacology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Department of Neurology, Clinics Hospital of Porto Alegre, Porto Alegre, Brazil
| | - Mario Cornejo-Olivas
- Neurogenetics Working Group, Universidad Científica del Sur, Lima, Peru
- Neurogenetics Research Center, National Institute of Neurological Sciences, Lima, Peru
| | - Elison H Sarapura-Castro
- Neurogenetics Working Group, Universidad Científica del Sur, Lima, Peru
- Neurogenetics Research Center, National Institute of Neurological Sciences, Lima, Peru
| | - Luis Torres
- Movement Disorders Unit, National Institute of Neurological Sciences, Lima, Peru
| | - Miguel A Inca-Martinez
- Genomic Medicine Institute, Cleveland Clinic Foundation Lerner Research Institute, Cleveland, Ohio, USA
| | - Pilar Mazzetti
- Neurogenetics Research Center, National Institute of Neurological Sciences, Lima, Peru
- School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Carlos Cosentino
- Movement Disorders Unit, National Institute of Neurological Sciences, Lima, Peru
- School of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Federico Micheli
- Parkinson's Disease and Movement Disorders Center, University of Buenos Aires, Buenos Aires, Argentina
- Centro de Parkinson y Movimientos Anormales, Fundación San Gabriel, Córdoba, Argentina
| | - Vitor Tumas
- Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Elena Dieguez
- Neurology Institute, Universidad de la Republica, Montevideo, Uruguay
| | - Victor Raggio
- Department of Genetics, Facultad de Medicina, Universidad de la Republica, Montevideo, Uruguay
| | - Vanderci Borges
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Henrique B Ferraz
- Movement Disorders Unit, Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Pedro Chana-Cuevas
- Centro de Trastornos del Movimiento (CETRAM), Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Santiago de Chile, Chile
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Carlos Velez-Pardo
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Sonia Moreno
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Francisco Lopera
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Jorge L Orozco-Velez
- Department of Neurology, Valle del Lili Foundation, Cali, Colombia
- Department of Human Sciences, Icesi University, Cali, Colombia
| | - Beatriz Muñoz-Ospina
- Department of Neurology, Valle del Lili Foundation, Cali, Colombia
- Department of Human Sciences, Icesi University, Cali, Colombia
| | - Carlos R M Rieder
- Departamento de Neurologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Alex Medina-Escobar
- Department of Neurology, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
- The Moncton City Hospital, Moncton, New Brunswick, Canada
| | - Dora Yearout
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Cyrus P Zabetian
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Ignacio F Mata
- Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
- Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Genomic Medicine Institute, Cleveland Clinic Foundation Lerner Research Institute, Cleveland, Ohio, USA
| |
Collapse
|
2
|
Baidya AT, Deshwal S, Das B, Mathew AT, Devi B, Sandhir R, Kumar R. Catalyzing a Cure: Discovery and development of LRRK2 inhibitors for the treatment of Parkinson's disease. Bioorg Chem 2024; 143:106972. [PMID: 37995640 DOI: 10.1016/j.bioorg.2023.106972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
Parkinson's disease (PD) is an age-related second most common progressive neurodegenerative disorder that affects millions of people worldwide. Despite decades of research, no effective disease modifying therapeutics have reached clinics for treatment/management of PD. Leucine-rich repeat kinase 2 (LRRK2) which controls membrane trafficking and lysosomal function and its variant LRRK2-G2019S are involved in the development of both familial and sporadic PD. LRRK2, is therefore considered as a legitimate target for the development of therapeutics against PD. During the last decade, efforts have been made to develop effective, safe and selective LRRK2 inhibitors and also our understanding about LRRK2 has progressed. However, there is an urge to learn from the previously designed and reported LRRK2 inhibitors in order to effectively approach designing of new LRRK2 inhibitors. In this review, we have aimed to cover the pre-clinical studies undertaken to develop small molecule LRRK2 inhibitors by screening the patents and other available literature in the last decade. We have highlighted LRRK2 as targets in the progress of PD and subsequently covered detailed design, synthesis and development of diverse scaffolds as LRRK2 inhibitors. Moreover, LRRK2 inhibitors under clinical development has also been discussed. LRRK2 inhibitors seem to be potential targets for future therapeutic interventions in the treatment and management of PD and this review can act as a cynosure for guiding discovery, design, and development of selective and non-toxic LRRK2 inhibitors. Although, there might be challenges in developing effective LRRK2 inhibitors, the opportunity to successfully develop novel therapeutics targeting LRRK2 against PD has never been greater.
Collapse
Affiliation(s)
- Anurag Tk Baidya
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (B.H.U.), Varanasi 221005, UP, India
| | - Sonam Deshwal
- Department of Biochemistry, Panjab University, Chandigarh 160014, India
| | - Bhanuranjan Das
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (B.H.U.), Varanasi 221005, UP, India
| | - Alen T Mathew
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (B.H.U.), Varanasi 221005, UP, India
| | - Bharti Devi
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (B.H.U.), Varanasi 221005, UP, India
| | - Rajat Sandhir
- Department of Biochemistry, Panjab University, Chandigarh 160014, India
| | - Rajnish Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (B.H.U.), Varanasi 221005, UP, India.
| |
Collapse
|
3
|
Majrashi TA, Wahab S, Almoyad MAA, Alkhathami AG, Alshahrani MY. Exploring natural compound, Panicutine as leucine-rich repeat kinase 2 inhibitor against Parkinson's disease: a structure-guided approach. J Biomol Struct Dyn 2023:1-10. [PMID: 37837424 DOI: 10.1080/07391102.2023.2268183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 09/29/2023] [Indexed: 10/16/2023]
Abstract
Leucine-rich repeat kinase 2 (LRRK2) is a promising drug target for the therapeutic management of Parkinson's disease (PD) and other neurodegenerative disorders. LRRK2 inhibitors have the potential to modulate neuroinflammation, reduce alpha-synuclein aggregation and improve motor symptoms in PD patients. Although LRRK2 inhibitors are still in the early stages of clinical development, the identification of potent and selective inhibitors through structure-guided approaches provides a promising avenue for the development of effective therapies for PD and other neurodegenerative disorders. In this study, natural compounds from the IMPPAT database were screened using a state-of-the-art computational virtual screening approach to identify potential inhibitors of LRRK2. We carried out a docking screening on a library of natural compounds and identified a few compounds with strong binding affinity, docking score and specificity towards LRRK2 as the top hits. These hits were then subjected to further analysis based on multiple parameters for the Pan-assay interference compounds and their physicochemical and pharmacokinetics evaluation followed by a detailed interaction analysis. After careful evaluation, one natural compound, Panicutine, was identified as a promising candidate for LRRK2 due to its significant affinity and specificity towards the LRRK2 binding pocket. Additionally, it exhibited drug-like properties with blood-brain barrier permeability as determined by ADMET properties. To gain a deeper understanding of the stability and conformational changes of the LRRK2-ligand complex, MD simulations were conducted for 100 nanoseconds under explicit solvent conditions followed by principal component analysis and free energy dynamics. The simulation results demonstrated that the LRRK2-Panicutine complex remained stable throughout the simulation trajectories. Based on these findings, it is concluded that Panicutine has the potential to act as a LRRK2 inhibitor against PD and other neurodegenerative disorders.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Taghreed A Majrashi
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Shadma Wahab
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Mohammad Ali Abdullah Almoyad
- Department of Basic Medical Sciences, College of Applied Medical Sciences in Khamis Mushyt, King Khalid University, Abha, Saudi Arabia
| | - Ali Gaithan Alkhathami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Mohammad Y Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| |
Collapse
|
4
|
Mata I, Salles P, Cornejo-Olivas M, Saffie P, Ross OA, Reed X, Bandres-Ciga S. LRRK2: Genetic mechanisms vs genetic subtypes. HANDBOOK OF CLINICAL NEUROLOGY 2023; 193:133-154. [PMID: 36803807 DOI: 10.1016/b978-0-323-85555-6.00018-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
In 2004, the identification of pathogenic variants in the LRRK2 gene across several families with autosomal dominant late-onset Parkinson's disease (PD) revolutionized our understanding of the role of genetics in PD. Previous beliefs that genetics in PD was limited to rare early-onset or familial forms of the disease were quickly dispelled. Currently, we recognize LRRK2 p.G2019S as the most common genetic cause of both sporadic and familial PD, with more than 100,000 affected carriers across the globe. The frequency of LRRK2 p.G2019S is also highly variable across populations, with some regions of Asian or Latin America reporting close to 0%, contrasting to Ashkenazi Jews or North African Berbers reporting up to 13% and 40%, respectively. Patients with LRRK2 pathogenic variants are clinically and pathologically heterogeneous, highlighting the age-related variable penetrance that also characterizes LRRK2-related disease. Indeed, the majority of patients with LRRK2-related disease are characterized by a relatively mild Parkinsonism with less motor symptoms with variable presence of α-synuclein and/or tau aggregates, with pathologic pleomorphism widely described. At a functional cellular level, it is likely that pathogenic variants mediate a toxic gain-of-function of the LRRK2 protein resulting in increased kinase activity perhaps in a cell-specific manner; by contrast, some LRRK2 variants appear to be protective reducing PD risk by decreasing the kinase activity. Therefore, employing this information to define appropriate patient populations for clinical trials of targeted kinase LRRK2 inhibition strategies is very promising and demonstrates a potential future application for PD using precision medicine.
Collapse
Affiliation(s)
- Ignacio Mata
- Genomic Medicine Institute (GMI), Cleveland Clinic, Cleveland, OH, United States.
| | - Philippe Salles
- Corporación Centro de Trastornos del Movimiento (CETRAM), Lo Espejo, Santiago, Chile
| | - Mario Cornejo-Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias Neurológicas, Lima, Peru
| | - Paula Saffie
- Corporación Centro de Trastornos del Movimiento (CETRAM), Lo Espejo, Santiago, Chile
| | - Owen A Ross
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Xylena Reed
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, United States
| | - Sara Bandres-Ciga
- Laboratory of Neurogenetics and Center for Alzheimer's and Related Dementias, National Institute on Aging, National Institutes of Health, Bethesda, MD, United States
| |
Collapse
|
5
|
Rasheed M, Liang J, Wang C, Deng Y, Chen Z. Epigenetic Regulation of Neuroinflammation in Parkinson's Disease. Int J Mol Sci 2021; 22:4956. [PMID: 34066949 PMCID: PMC8125491 DOI: 10.3390/ijms22094956] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 02/08/2023] Open
Abstract
Neuroinflammation is one of the most significant factors involved in the initiation and progression of Parkinson's disease. PD is a neurodegenerative disorder with a motor disability linked with various complex and diversified risk factors. These factors trigger myriads of cellular and molecular processes, such as misfolding defective proteins, oxidative stress, mitochondrial dysfunction, and neurotoxic substances that induce selective neurodegeneration of dopamine neurons. This neuronal damage activates the neuronal immune system, including glial cells and inflammatory cytokines, to trigger neuroinflammation. The transition of acute to chronic neuroinflammation enhances the susceptibility of inflammation-induced dopaminergic neuron damage, forming a vicious cycle and prompting an individual to PD development. Epigenetic mechanisms recently have been at the forefront of the regulation of neuroinflammatory factors in PD, proposing a new dawn for breaking this vicious cycle. This review examined the core epigenetic mechanisms involved in the activation and phenotypic transformation of glial cells mediated neuroinflammation in PD. We found that epigenetic mechanisms do not work independently, despite being coordinated with each other to activate neuroinflammatory pathways. In this regard, we attempted to find the synergic correlation and contribution of these epigenetic modifications with various neuroinflammatory pathways to broaden the canvas of underlying pathological mechanisms involved in PD development. Moreover, this study highlighted the dual characteristics (neuroprotective/neurotoxic) of these epigenetic marks, which may counteract PD pathogenesis and make them potential candidates for devising future PD diagnosis and treatment.
Collapse
Affiliation(s)
| | | | | | | | - Zixuan Chen
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China; (M.R.); (J.L.); (C.W.); (Y.D.)
| |
Collapse
|
6
|
Kuriakose B, K S, Rs AH, S V, A A, Kumar S, Murugesan R, V R, Ahmed SS. Association of leucine-rich repeat kinase 2 gene rs10878307 polymorphism and Parkinson's disease risk in South India-A meta-analysis and molecular dynamics simulation. J Biomol Struct Dyn 2019; 38:5544-5552. [PMID: 31790336 DOI: 10.1080/07391102.2019.1699860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Basil Kuriakose
- Genetics Lab, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, India
| | - Subramaniyan K
- Department of Neurology, Chettinad Super Specialty Hospital, Chettinad Health City, Kelambakkam, India
| | - Akram Husain Rs
- Genetics Lab, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, India
| | - Velusamy S
- Department of Neurology, Stanley Medical College and Hospital, Chennai, India
| | - Arunan A
- Department of Neurology, Stanley Medical College and Hospital, Chennai, India
| | - Suresh Kumar
- Department of Neurology, Sree Balajee Medical College and Hospital, Bharath University, Chennai, India
| | - Ram Murugesan
- Drug Discovery Lab, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, India
| | - Ramakrishnan V
- Genetics Lab, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, India
| | - Shiek Ssj Ahmed
- Drug Discovery Lab, Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, India
| |
Collapse
|
7
|
Shu L, Zhang Y, Sun Q, Pan H, Tang B. A Comprehensive Analysis of Population Differences in LRRK2 Variant Distribution in Parkinson's Disease. Front Aging Neurosci 2019; 11:13. [PMID: 30760999 PMCID: PMC6363667 DOI: 10.3389/fnagi.2019.00013] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/14/2019] [Indexed: 11/13/2022] Open
Abstract
Background:LRRK2 variants have been demonstrated to have distinct distributions in different populations. However, researchers have thus far chosen to focus on relatively few variants, such as R1628P, G2019S, and G2385R. We therefore investigated the relationship between common LRRK2 variants and PD risk in various populations. Methods: Using a set of strict inclusion criteria, six databases were searched, resulting in the selection of 94 articles covering 49,299 cases and 47,319 controls for final pooled analysis and frequency analysis. Subgroup analysis were done for Africans, European/West Asians, Hispanics, East Asians, and mixed populations. Statistical analysis was carried out using the Mantel-Haenszel approach to determine the relationship between common LRRK2 variants and PD risk, with the significance level set at p < 0.05. Results: In the absence of obvious heterogeneities and publication biases among the included studies, we concluded that A419V, R1441C/G/H, R1628P, G2019S, and G2385R were associated with increased PD risk (p: 0.001, 0.0004, < 0.00001, < 0.00001, and < 0.00001, respectively), while R1398H was associated with decreased risk (p: < 0.00001). In East Asian populations, A419V, R1628P, and G2385R increased risk (p: 0.001, < 0.00001, < 0.00001), while R1398H had the opposite effect (p: 0.0005). G2019S increased PD risk in both European/West Asian and mixed populations (p: < 0.00001, < 0.00001), while R1441C/G/H increased risk in European/West Asian populations only (p: 0.0004). Conclusions: We demonstrated that LRRK2 variant distribution is different among various populations, which should inform decisions regarding the development of future genetic screening strategies.
Collapse
Affiliation(s)
- Li Shu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Yuan Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qiying Sun
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Hongxu Pan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China.,Parkinson's Disease Center of Beijing Institute for Brain Disorders, Beijing, China
| |
Collapse
|
8
|
Chen ML, Wu RM. LRRK 2 gene mutations in the pathophysiology of the ROCO domain and therapeutic targets for Parkinson's disease: a review. J Biomed Sci 2018; 25:52. [PMID: 29903014 PMCID: PMC6000924 DOI: 10.1186/s12929-018-0454-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/31/2018] [Indexed: 01/13/2023] Open
Abstract
Parkinson’s disease (PD) is the most common movement disorder and manifests as resting tremor, rigidity, bradykinesia, and postural instability. Pathologically, PD is characterized by selective loss of dopaminergic neurons in the substantia nigra and the formation of intracellular inclusions containing α-synuclein and ubiquitin called Lewy bodies. Consequently, a remarkable deficiency of dopamine in the striatum causes progressive disability of motor function. The etiology of PD remains uncertain. Genetic variability in leucine-rich repeat kinase 2 (LRRK2) is the most common genetic cause of sporadic and familial PD. LRRK2 encodes a large protein containing three catalytic and four protein-protein interaction domains. Patients with LRRK2 mutations exhibit a clinical and pathological phenotype indistinguishable from sporadic PD. Recent studies have shown that pathological mutations of LRRK2 can reduce the rate of guanosine triphosphate (GTP) hydrolysis, increase kinase activity and GTP binding activity, and subsequently cause cell death. The process of cell death involves several signaling pathways, including the autophagic–lysosomal pathway, intracellular trafficking, mitochondrial dysfunction, and the ubiquitin–proteasome system. This review summarizes the cellular function and pathophysiology of LRRK2 ROCO domain mutations in PD and the perspective of therapeutic approaches.
Collapse
Affiliation(s)
- Meng-Ling Chen
- Department of Life Science, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Da-an Dist, Taipei City, 10617, Taiwan.,Department of Neurology, College of Medicine, National Taiwan University Hospital, National Taiwan University, No. 7, Chung-Shan South Road, Zhongzheng Dist, Taipei City, 10002, Taiwan
| | - Ruey-Meei Wu
- Department of Life Science, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Da-an Dist, Taipei City, 10617, Taiwan. .,Department of Neurology, College of Medicine, National Taiwan University Hospital, National Taiwan University, No. 7, Chung-Shan South Road, Zhongzheng Dist, Taipei City, 10002, Taiwan.
| |
Collapse
|
9
|
Zhao H, Kong Z. Relationship between LRRK2 R1628P polymorphism and Parkinson's disease in Asian populations. Oncotarget 2018; 7:46890-46898. [PMID: 27384489 PMCID: PMC5216911 DOI: 10.18632/oncotarget.10378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 06/07/2016] [Indexed: 01/11/2023] Open
Abstract
Although the leucine-rich repeat kinase 2 (LRRK2) R1628P polymorphism has been associated with the risk of Parkinson's disease (PD) in Taiwan, China, and Singapore, there are conflicting findings regarding this relationship. Thus, the aim of the present meta-analysis was to evaluate the associations between the LRRK2 R1628P polymorphism (rs33949390) and PD in Asian populations. A search for eligible studies was performed in PubMed, Embase, SinoMed, and the China Knowledge Resource Integrated Database, and pooled odds ratios and 95% confidence intervals were used to evaluate the strength of the association between the R1628P polymorphism and PD. This meta-analysis assessed 19 studies from 14 papers that involved a total of 9,927 PD patients and 8,602 controls and found that the R1628P polymorphism was significantly associated with the risk of PD in Asian populations. Moreover, stratification analyses indicated that the R1628P polymorphism was significantly associated with an increased risk of PD among Chinese as well as non-Chinese Asian populations and an increased risk of PD in Chinese patients from China, Taiwan, and Singapore. In a stratified analysis conducted according to age, significant associations were found for both late-onset PD and early-onset PD. The present data indicate that the R1628P polymorphism of the LRRK2 gene contributes to PD susceptibility in Asian, especially Chinese, populations.
Collapse
Affiliation(s)
- Hui Zhao
- Department of General Surgery, Third Affiliated Hospital of Nantong University, Wuxi, China
| | - Zhijun Kong
- Department of General Surgery, Affiliated Hospital of Nanjing Medical University, Changzhou Second People's Hospital, Changzhou, China
| |
Collapse
|
10
|
Chang KH, Chen CM, Lin CH, Chang WT, Jiang PR, Hsiao YC, Wu YR, Lee-Chen GJ. Functional properties of LRRK2 mutations in Taiwanese Parkinson disease. J Formos Med Assoc 2016; 116:197-204. [PMID: 27423549 DOI: 10.1016/j.jfma.2016.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/12/2016] [Accepted: 04/28/2016] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND/PURPOSE Leucine-rich repeat kinase 2 (LRRK2) is a large protein encoding multiple functional domains. Mutations within different LRRK2 domains have been considered to be involved in the development of Parkinson disease by different mechanisms. Our previous study found three LRRK2 mutations-p.R767H, p.S885N, and p.R1441H-in Taiwanese patients with Parkinson disease. METHODS We evaluated the functional properties of LRRK2 p.R767H, p.S885N, and p.R1441H mutations by overexpressing them in human embryonic kidney 293 and neuroblastoma SK-N-SH cells. The common p.G2019S mutation in the kinase domain was included for comparison. RESULTS In 293 cells, overexpressed p.R1441H-but not p.R767H, p.S885N, or p.G2019-increased GTP binding affinity to prolong the active state. Overexpressed p.R1441H and p.G2019S generated inclusions in 293 cells. In SK-N-SH cells, the α-synuclein was coexpressed with wild type as well as mutated p.R767H, p.S885N, p.R1441H, and p.G2019 LRRK2 proteins. Part of the perinuclear inclusions formed by p.R1441H and p.G2019S were colocalized with α-synuclein. Additionally, p.S885N and p.R1441H mutations caused reduced interaction between LRRK2 and ARHGEF7, a putative guanine nucleotide exchange factor for LRRK2, whereas this interaction was well preserved in p.R767H and p.G2019S mutations. CONCLUSION Our study suggests that p.R1441H protein facilitates the formation of intracellular inclusions, compromises GTP hydrolysis by increasing its affinity for GTP, and reduces its interaction with ARHGEF7.
Collapse
Affiliation(s)
- Kuo-Hsuan Chang
- Department of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Chiung-Mei Chen
- Department of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Chih-Hsin Lin
- Department of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Wen-Teng Chang
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Pei-Ru Jiang
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Ya-Chin Hsiao
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Yih-Ru Wu
- Department of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University College of Medicine, Taipei 10507, Taiwan.
| | - Guey-Jen Lee-Chen
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan.
| |
Collapse
|
11
|
Stanic J, Mellone M, Cirnaru MD, Perez-Carrion M, Zianni E, Di Luca M, Gardoni F, Piccoli G. LRRK2 phosphorylation level correlates with abnormal motor behaviour in an experimental model of levodopa-induced dyskinesias. Mol Brain 2016; 9:53. [PMID: 27169991 PMCID: PMC4866295 DOI: 10.1186/s13041-016-0234-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 05/04/2016] [Indexed: 11/29/2022] Open
Abstract
Levodopa (L-DOPA)-induced dyskinesias (LIDs) represent the major side effect in Parkinson’s disease (PD) therapy. Leucine-rich repeat kinase 2 (LRRK2) mutations account for up to 13 % of familial cases of PD. LRRK2 N-terminal domain encompasses several serine residues that undergo phosphorylation influencing LRRK2 function. This work aims at investigating whether LRRK2 phosphorylation/function may be involved in the molecular pathways downstream D1 dopamine receptor leading to LIDs. Here we show that LRRK2 phosphorylation level at serine 935 correlates with LIDs induction and that inhibition of LRRK2 induces a significant increase in the dyskinetic score in L-DOPA treated parkinsonian animals. Our findings support a close link between LRKK2 functional state and L-DOPA-induced abnormal motor behaviour and highlight that LRRK2 phosphorylation level may be implicated in LIDs, calling for novel therapeutic strategies.
Collapse
Affiliation(s)
- Jennifer Stanic
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Manuela Mellone
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | | | - Maria Perez-Carrion
- Dulbecco Telethon Institute and Center for Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Elisa Zianni
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Monica Di Luca
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Fabrizio Gardoni
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy.
| | - Giovanni Piccoli
- IN-CNR, Milano, Italy.,Dulbecco Telethon Institute and Center for Integrative Biology (CIBIO), University of Trento, Trento, Italy
| |
Collapse
|
12
|
Leveridge M, Collier L, Edge C, Hardwicke P, Leavens B, Ratcliffe S, Rees M, Stasi LP, Nadin A, Reith AD. A High-Throughput Screen to Identify LRRK2 Kinase Inhibitors for the Treatment of Parkinson’s Disease Using RapidFire Mass Spectrometry. ACTA ACUST UNITED AC 2015; 21:145-55. [DOI: 10.1177/1087057115606707] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 08/07/2015] [Indexed: 12/12/2022]
Abstract
LRRK2 is a large multidomain protein containing two functional enzymatic domains: a GTPase domain and a protein kinase domain. Dominant coding mutations in the LRRK2 protein are associated with Parkinson’s disease (PD). Among such pathogenic mutations, Gly2019Ser mutation in the LRRK2 kinase domain is the most frequent cause of familial PD in Caucasians and is also found in some apparently sporadic PD cases. This mutation results in 2- to 3-fold elevated LRRK2 kinase activity compared with wild type, providing a clear clinical hypothesis for the application of kinase inhibitors in the treatment of this disease. To date, reported screening assays for LRRK2 have been based on detection of labeled adenosine triphosphate and adenosine diphosphate or on antibody-based detection of phosphorylation events. While these assays do offer a high-throughput method of monitoring LRRK2 kinase activity, they are prone to interference from autofluorescent compounds and nonspecific events. Here we describe a label-free assay for LRRK2 kinase activity using the RapidFire mass spectrometry system. This assay format was found to be highly robust and enabled a screen of 100,000 lead-like small molecules. The assay successfully identified a number of known LRRK2 chemotypes that met stringent physicochemical criteria.
Collapse
Affiliation(s)
- Melanie Leveridge
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Lee Collier
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
- Cancer Research Technology, Babraham Research Campus, Cambridge, UK
| | - Colin Edge
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Phil Hardwicke
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Bill Leavens
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Steve Ratcliffe
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Mike Rees
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Luigi Piero Stasi
- Neurodegeneration DPU, Neurosciences Therapy Area Unit, GlaxoSmithKline, Pharmaceuticals R&D, Hertfordshire, UK, and Pudong, China
- Nuevolution A/S, Rønnegade 8, DK-2100 Copenhagen, Denmark
| | - Alan Nadin
- Department of Platform Technology and Science, GlaxoSmithKline Pharmaceuticals R&D, Hertfordshire, UK
| | - Alastair D. Reith
- Neurodegeneration DPU, Neurosciences Therapy Area Unit, GlaxoSmithKline, Pharmaceuticals R&D, Hertfordshire, UK, and Pudong, China
| |
Collapse
|
13
|
Discovery of LRRK2 inhibitors using sequential in silico joint pharmacophore space (JPS) and ensemble docking. Bioorg Med Chem Lett 2015; 25:2713-9. [DOI: 10.1016/j.bmcl.2015.04.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/08/2015] [Accepted: 04/10/2015] [Indexed: 11/22/2022]
|
14
|
Lee JW, Tapias V, Di Maio R, Greenamyre JT, Cannon JR. Behavioral, neurochemical, and pathologic alterations in bacterial artificial chromosome transgenic G2019S leucine-rich repeated kinase 2 rats. Neurobiol Aging 2014; 36:505-18. [PMID: 25174649 DOI: 10.1016/j.neurobiolaging.2014.07.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 06/19/2014] [Accepted: 07/08/2014] [Indexed: 12/16/2022]
Abstract
Mutations in leucine-rich repeated kinase 2 (LRRK2) cause autosomal dominant late-onset Parkinson's disease (PD), and the G2019S mutation in the kinase domain of LRRK2 is the most common genetic cause of familial PD. Enhanced kinase activity of G2019S LRRK2 is a suspected mechanism for carriers to develop PD but pathophysiological function of G2019S LRRK2 is not clear. The objective of the present study was to characterize a bacterial artificial chromosome rat expressing human G2019S LRRK2. Immunoblotting analysis showed that G2019S LRRK2 expression was approximately 5-8 times higher than wild-type rat LRRK2. At ages of 4, 8, and 12 months, our characterization showed that expression of G2019S LRRK2 induced oxidative stress in striatum and substantia nigra, increased inducible nitric oxide synthase expression in nigral dopamine neurons, and abnormal morphology of nigral dopaminergic neurons in transgenic rats compared with wild-type, without inducing overt neurodegeneration in nigrostriatal dopaminergic neurons. Thus, we conclude that although this model does not reproduce the key features of end-stage PD, important preclinical features of the disease are evident, which may be useful in studying the earliest stages of PD and for gene-environment interaction studies.
Collapse
Affiliation(s)
- Jang-Won Lee
- School of Health Sciences, Purdue University, West Lafayette, IN, USA
| | - Victor Tapias
- Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA, USA
| | - Roberto Di Maio
- Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA, USA; Ri.MED Foundation, Italy
| | - J Timothy Greenamyre
- Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jason R Cannon
- School of Health Sciences, Purdue University, West Lafayette, IN, USA.
| |
Collapse
|
15
|
Cirnaru MD, Marte A, Belluzzi E, Russo I, Gabrielli M, Longo F, Arcuri L, Murru L, Bubacco L, Matteoli M, Fedele E, Sala C, Passafaro M, Morari M, Greggio E, Onofri F, Piccoli G. LRRK2 kinase activity regulates synaptic vesicle trafficking and neurotransmitter release through modulation of LRRK2 macro-molecular complex. Front Mol Neurosci 2014; 7:49. [PMID: 24904275 PMCID: PMC4034499 DOI: 10.3389/fnmol.2014.00049] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 05/09/2014] [Indexed: 11/13/2022] Open
Abstract
Mutations in Leucine-rich repeat kinase 2 gene (LRRK2) are associated with familial and sporadic Parkinson's disease (PD). LRRK2 is a complex protein that consists of multiple domains executing several functions, including GTP hydrolysis, kinase activity, and protein binding. Robust evidence suggests that LRRK2 acts at the synaptic site as a molecular hub connecting synaptic vesicles to cytoskeletal elements via a complex panel of protein-protein interactions. Here we investigated the impact of pharmacological inhibition of LRRK2 kinase activity on synaptic function. Acute treatment with LRRK2 inhibitors reduced the frequency of spontaneous currents, the rate of synaptic vesicle trafficking and the release of neurotransmitter from isolated synaptosomes. The investigation of complementary models lacking LRRK2 expression allowed us to exclude potential off-side effects of kinase inhibitors on synaptic functions. Next we studied whether kinase inhibition affects LRRK2 heterologous interactions. We found that the binding among LRRK2, presynaptic proteins and synaptic vesicles is affected by kinase inhibition. Our results suggest that LRRK2 kinase activity influences synaptic vesicle release via modulation of LRRK2 macro-molecular complex.
Collapse
Affiliation(s)
- Maria D Cirnaru
- Division of Neuroscience, San Raffaele Scientific Institute and Vita-Salute University Milan, Italy ; Department of Molecular and Cellular Pharmacology, National Research Council, Neuroscience Institute Milan, Italy
| | - Antonella Marte
- Department of Experimental Medicine, University of Genova Genova, Italy
| | - Elisa Belluzzi
- Department of Biology, University of Padova Padova, Italy
| | - Isabella Russo
- Department of Biology, University of Padova Padova, Italy
| | - Martina Gabrielli
- Department of Molecular and Cellular Pharmacology, National Research Council, Neuroscience Institute Milan, Italy ; Department of Medical Biotechnology and Translational Medicine, University of Milan Milan, Italy
| | - Francesco Longo
- Department of Medical Science and National Institute of Neuroscience, University of Ferrara Ferrara, Italy
| | - Ludovico Arcuri
- Department of Medical Science and National Institute of Neuroscience, University of Ferrara Ferrara, Italy
| | - Luca Murru
- Department of Molecular and Cellular Pharmacology, National Research Council, Neuroscience Institute Milan, Italy
| | - Luigi Bubacco
- Department of Biology, University of Padova Padova, Italy
| | - Michela Matteoli
- Department of Medical Biotechnology and Translational Medicine, University of Milan Milan, Italy ; Humanitas Clinical and Research Center, Pharmacology and Brain Pathology Rozzano, Italy
| | - Ernesto Fedele
- Department of Pharmacy, University of Genoa Genoa, Italy
| | - Carlo Sala
- Department of Molecular and Cellular Pharmacology, National Research Council, Neuroscience Institute Milan, Italy ; Department of Medical Biotechnology and Translational Medicine, University of Milan Milan, Italy
| | - Maria Passafaro
- Department of Molecular and Cellular Pharmacology, National Research Council, Neuroscience Institute Milan, Italy
| | - Michele Morari
- Department of Medical Science and National Institute of Neuroscience, University of Ferrara Ferrara, Italy
| | - Elisa Greggio
- Department of Biology, University of Padova Padova, Italy
| | - Franco Onofri
- Department of Experimental Medicine, University of Genova Genova, Italy
| | - Giovanni Piccoli
- Division of Neuroscience, San Raffaele Scientific Institute and Vita-Salute University Milan, Italy ; Department of Molecular and Cellular Pharmacology, National Research Council, Neuroscience Institute Milan, Italy
| |
Collapse
|
16
|
Leucine-rich repeat kinase 2 binds to neuronal vesicles through protein interactions mediated by its C-terminal WD40 domain. Mol Cell Biol 2014; 34:2147-61. [PMID: 24687852 DOI: 10.1128/mcb.00914-13] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Mutations in the leucine-rich repeat kinase 2 gene (LRRK2) are associated with familial and sporadic Parkinson's disease (PD). LRRK2 is a complex protein that consists of multiple domains, including predicted C-terminal WD40 repeats. In this study, we analyzed functional and molecular features conferred by the WD40 domain. Electron microscopic analysis of the purified LRRK2 C-terminal domain revealed doughnut-shaped particles, providing experimental evidence for its WD40 fold. We demonstrate that LRRK2 WD40 binds and sequesters synaptic vesicles via interaction with vesicle-associated proteins. In fact, a domain-based pulldown approach combined with mass spectrometric analysis identified LRRK2 as being part of a highly specific protein network involved in synaptic vesicle trafficking. In addition, we found that a C-terminal sequence variant associated with an increased risk of developing PD, G2385R, correlates with a reduced binding affinity of LRRK2 WD40 to synaptic vesicles. Our data demonstrate a critical role of the WD40 domain within LRRK2 function.
Collapse
|
17
|
|
18
|
Wu YR, Chang KH, Chang WT, Hsiao YC, Hsu HC, Jiang PR, Chen YC, Chao CY, Chang YC, Lee BH, Hu FJ, Chen WL, Lee-Chen GJ, Chen CM. Genetic variants ofLRRK2 in Taiwanese Parkinson's disease. PLoS One 2013; 8:e82001. [PMID: 24339985 PMCID: PMC3855417 DOI: 10.1371/journal.pone.0082001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 10/19/2013] [Indexed: 12/27/2022] Open
Abstract
Genetic variants of leucine-rich repeat kinase 2 (LRRK2) were reported to alter the risk for Parkinson's disease (PD). However, the genetic spectrum of LRRK2 variants has not been clearly disclosed yet in Taiwanese population. Herein, we sequenced LRRK2 coding region in 70 Taiwanese early onset PD patients (age at onset ≤ 50), and found six amino acid-changing single nucleotide polymorphisms (SNPs, N551K, R1398H, R1628P, S1647T, G2385R and M2397T), one reported (R1441H) and 2 novel missense (R767H and S885N) mutations. We examined the frequency of identified LRRK2 variants by genotyping 573 Taiwanese patients with PD and 503 age-matched control subjects. The results showed that PD patients demonstrated a higher frequency of G2385R A allele (4.6%) than control subjects (2.1%; odds ratio = 2.27, 95% confidence interval: 1.38-3.88, P = 0.0017). Fewer PD patients (27.7%) carried the 1647T-2397T haplotype as compared with the control subjects (33.0%; odds ratio = 0.80, 95% confidence interval: 0.65-0.97, P = 0.0215). However, the frequency of 1647T-2385R-2397T haplotype (4.3%) in PD patients was still higher than in control subjects (1.9%, odds ratio: 2.15, 95% confidence interval: 1.27-3.78, P = 0.0058). While no additional subject was found to carry R767H and R1441H, one more patient was observed to carry the S885N variant. Our results indicate a robust risk association regarding G2385R and a new possible protective haplotype (1647T-2397T). Gene-environmental interaction and a larger cohort study are warranted to validate our findings. Additionally, two new missense mutations (R767H and S885N) regarding LRRK2 in PD patients were identified. Functional studies are needed to elucidate the effects of these LRRK2 variants on protein function.
Collapse
Affiliation(s)
- Yih-Ru Wu
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Kuo-Hsuan Chang
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Wen-Teng Chang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Ya-Chin Hsiao
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Hsuan-Chu Hsu
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Pei-Ru Jiang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Yi-Chun Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Chih-Ying Chao
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Yi-Chung Chang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Bo-Hsun Lee
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Fen-Ju Hu
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Wan-Ling Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Guey-Jen Lee-Chen
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
- * E-mail: (GJLC); (CMC)
| | - Chiung-Mei Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
- * E-mail: (GJLC); (CMC)
| |
Collapse
|
19
|
Abstract
Alzheimer disease (AD) and Parkinson disease (PD) are the two most common age-related neurodegenerative diseases characterized by prominent neurodegeneration in selective neural systems. Although a small fraction of AD and PD cases exhibit evidence of heritability, among which many genes have been identified, the majority are sporadic without known causes. Molecular mechanisms underlying neurodegeneration and pathogenesis of these diseases remain elusive. Convincing evidence demonstrates oxidative stress as a prominent feature in AD and PD and links oxidative stress to the development of neuronal death and neural dysfunction, which suggests a key pathogenic role for oxidative stress in both AD and PD. Notably, mitochondrial dysfunction is also a prominent feature in these diseases, which is likely to be of critical importance in the genesis and amplification of reactive oxygen species and the pathophysiology of these diseases. In this review, we focus on changes in mitochondrial DNA and mitochondrial dynamics, two aspects critical to the maintenance of mitochondrial homeostasis and function, in relationship with oxidative stress in the pathogenesis of AD and PD.
Collapse
Affiliation(s)
| | - Xinglong Wang
- Department of Pathology; Department of Neurology, Case Western Reserve University, Cleveland, OH 44106, USA.
| | - Xiongwei Zhu
- Department of Pathology; Department of Neurology, Case Western Reserve University, Cleveland, OH 44106, USA.
| |
Collapse
|
20
|
Belluzzi E, Greggio E, Piccoli G. Presynaptic dysfunction in Parkinson's disease: a focus on LRRK2. Biochem Soc Trans 2012; 40:1111-1116. [PMID: 22988874 DOI: 10.1042/bst20120124] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
PD (Parkinson's disease) is a common neurodegenerative disease clinically characterized by bradykinesia, rigidity and resting tremor. Recent studies have proposed that synaptic dysfunction, implicated in numerous studies of animal models of PD, might be a key factor in PD. The molecular defects that lead to PD progression might be hidden at the presynaptic neuron: in fact accumulating evidence has shown that the majority of the genes linked to PD play a critical role at the presynaptic site. In the present paper, we focus on the presynaptic function of LRRK2 (leucine-rich repeat kinase 2), a protein that mutated represents the main genetic cause of familial PD described to date. Neurotransmission relies on proper presynaptic vesicle trafficking; defects in this process, variation in dopamine flow and alteration of presynaptic plasticity have been reported in several animal models of LRRK2 mutations. Furthermore, impaired dopamine turnover has been described in presymptomatic LRRK2 PD patients. Thus, given the pathological events occurring at the synapses of PD patients, the presynaptic site may represent a promising target for early diagnostic therapeutic intervention.
Collapse
Affiliation(s)
- Elisa Belluzzi
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, Padua, Italy
| | | | | |
Collapse
|
21
|
Possible involvement of the relationship of LRRK2 and autophagy in Parkinson's disease. Biochem Soc Trans 2012; 40:1129-33. [DOI: 10.1042/bst20120095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PD (Parkinson's disease) is a neurodegenerative disorder caused by loss of dopamine-generating cells in the substantia nigra. The implication of genetic factors in the aetiology of PD has an essential importance in our understanding of the development of the disease. Mutations in the LRRK2 (leucine-rich repeat kinase 2) gene cause late-onset PD with a clinical appearance indistinguishable from idiopathic PD. Moreover, LRRK2 has been associated with the process of autophagy regulation. Autophagy is an intracellular catabolic mechanism whereby a cell recycles or degrades damaged proteins and cytoplasmic organelles. In the present paper, we discuss the role of LRRK2 in autophagy, and the importance of this relationship in the development of nigral degeneration in PD.
Collapse
|
22
|
Parkinson's disease: leucine-rich repeat kinase 2 and autophagy, intimate enemies. PARKINSONS DISEASE 2012; 2012:151039. [PMID: 22970411 PMCID: PMC3437299 DOI: 10.1155/2012/151039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 07/13/2012] [Indexed: 11/18/2022]
Abstract
Parkinson's disease is the second common neurodegenerative disorder, after Alzheimer's disease. It is a clinical syndrome characterized by loss of dopamine-generating cells in the substancia nigra, a region of the midbrain. The etiology of Parkinson's disease has long been through to involve both genetic and environmental factors. Mutations in the leucine-rich repeat kinase 2 gene cause late-onset Parkinson's disease with a clinical appearance indistinguishable from Parkinson's disease idiopathic. Autophagy is an intracellular catabolic mechanism whereby a cell recycles or degrades damage proteins and cytoplasmic organelles. This degradative process has been associated with cellular dysfunction in neurodegenerative processes including Parkinson's disease. We discuss the role of leucine-rich repeat kinase 2 in autophagy, and how the deregulations of this degradative mechanism in cells can be implicated in the Parkinson's disease etiology.
Collapse
|
23
|
Synaptic Dysfunction in Parkinson’s Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 970:553-72. [DOI: 10.1007/978-3-7091-0932-8_24] [Citation(s) in RCA: 174] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
24
|
LRRK2 controls synaptic vesicle storage and mobilization within the recycling pool. J Neurosci 2011; 31:2225-37. [PMID: 21307259 DOI: 10.1523/jneurosci.3730-10.2011] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Mutations in leucine-rich repeat kinase 2 (LRRK2) are the single most common cause of inherited Parkinson's disease. Little is known about its involvement in the pathogenesis of Parkinson's disease mainly because of the lack of knowledge about the physiological role of LRRK2. To determine the function of LRRK2, we studied the impact of short hairpin RNA-mediated silencing of LRRK2 expression in cortical neurons. Paired recording indicated that LRRK2 silencing affects evoked postsynaptic currents. Furthermore, LRRK2 silencing induces at the presynaptic site a redistribution of vesicles within the bouton, altered recycling dynamics, and increased vesicle kinetics. Accordingly, LRRK2 protein is present in the synaptosomal compartment of cortical neurons in which it interacts with several proteins involved in vesicular recycling. Our results suggest that LRRK2 modulates synaptic vesicle trafficking and distribution in neurons and in consequence participates in regulating the dynamics between vesicle pools inside the presynaptic bouton.
Collapse
|
25
|
Bardien S, Marsberg A, Keyser R, Lombard D, Lesage S, Brice A, Carr J. LRRK2 G2019S mutation: frequency and haplotype data in South African Parkinson's disease patients. J Neural Transm (Vienna) 2010; 117:847-53. [PMID: 20544233 DOI: 10.1007/s00702-010-0423-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2010] [Accepted: 05/22/2010] [Indexed: 10/19/2022]
Abstract
Mutations in the leucine-rich repeat kinase 2 gene (LRRK2) are the most significant genetic cause of Parkinson's disease (PD). The exact function of LRRK2 is currently unknown but the presence of multiple protein interaction domains including WD40 and ankyrin indicates that it may act a scaffold for assembly of a multi-protein signaling complex. The G2019S mutation in LRRK2 represents the most clinically relevant PD-causing mutation and has been found in both familial and sporadic forms of the disorder. This mutation is situated in the highly conserved kinase MAPKKK domain, and has been found in up to 40% of PD patients from North African Arabic, 30% of Ashkenazi Jewish and approximately 10% of Portuguese and Spanish populations. Although extensively investigated in numerous European and North American populations, studies on the frequency of G2019S in African countries have been rare. The present study is the first on the South African population. High-resolution melt analysis was used to identify the G2019S mutation and it was found in 2% (4/205) of the patients studied. G2019S was not found in any of the Black PD patients screened. In all four G2019S-positive probands the mutation was shown to be present on the common haplotype referred to as haplotype 1. This reveals that the four South African G2019S-positive probands (three Caucasian and one of mixed ancestry) share a common ancestor with the other haplotype 1-associated families reported worldwide.
Collapse
Affiliation(s)
- Soraya Bardien
- Division of Molecular Biology and Human Genetics, University of Stellenbosch, 4th Floor Fisan Building, PO Box 19063, Tygerberg, Cape Town, 7505, South Africa.
| | | | | | | | | | | | | |
Collapse
|
26
|
Yao C, El Khoury R, Wang W, Byrd TA, Pehek EA, Thacker C, Zhu X, Smith MA, Wilson-Delfosse AL, Chen SG. LRRK2-mediated neurodegeneration and dysfunction of dopaminergic neurons in a Caenorhabditis elegans model of Parkinson's disease. Neurobiol Dis 2010; 40:73-81. [PMID: 20382224 DOI: 10.1016/j.nbd.2010.04.002] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Revised: 03/31/2010] [Accepted: 04/02/2010] [Indexed: 12/13/2022] Open
Abstract
Mutations in LRRK2 are thus far the most frequent known cause of autosomal dominant and idiopathic Parkinson's disease (PD) with prevalent mutations being found within the GTPase (R1441C/G) and kinase (G2019S) domains. Previous in vitro studies have revealed that R1441C and G2019S mutations are associated with increased kinase activity. To better understand LRRK2-linked PD pathogenesis in vivo, we have generated transgenic C. elegans overexpressing human LRRK2 wild type, R1441C and G2019S in dopaminergic (DA) neurons. Overexpression of these LRRK2 proteins causes age-dependent DA neurodegeneration, behavioral deficits, and locomotor dysfunction that are accompanied by a reduction of dopamine levels in vivo. In comparison, R1441C and G2019S mutants cause more severe phenotypes than the wild type protein. Interestingly, treatment with exogenous dopamine rescues the LRRK2-induced behavioral and locomotor phenotypes. In contrast, expression of the GTP binding defective mutant, K1347A, or knockout of the C. elegans LRRK2 homolog, LRK-1, prevents the LRRK2-induced neurodegeneration and behavioral abnormalities. Hence, our transgenic LRRK2 C. elegans models recapitulate key features of PD including progressive neurodegeneration, impairment of dopamine-dependent behavior and locomotor function, and reduction in dopamine levels. Furthermore, our findings provide strong support for the critical role of GTPase/kinase activity in LRRK2-linked pathologies. These invertebrate models will be useful for studying pathogenesis of PD and for development of potential therapeutics for the disease.
Collapse
Affiliation(s)
- Chen Yao
- Department of Pathology, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Pathological roles of MAPK signaling pathways in human diseases. Biochim Biophys Acta Mol Basis Dis 2010; 1802:396-405. [DOI: 10.1016/j.bbadis.2009.12.009] [Citation(s) in RCA: 1521] [Impact Index Per Article: 108.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 11/26/2009] [Accepted: 12/01/2009] [Indexed: 12/13/2022]
|
28
|
Gandhi PN, Chen SG, Wilson-Delfosse AL. Leucine-rich repeat kinase 2 (LRRK2): a key player in the pathogenesis of Parkinson's disease. J Neurosci Res 2009; 87:1283-95. [PMID: 19025767 DOI: 10.1002/jnr.21949] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Parkinson's disease (PD) is the most common neurodegenerative movement disorder, with a prevalence of more than 1% after the age of 65 years. Mutations in the gene encoding leucine-rich repeat kinase-2 (LRRK2) have recently been linked to autosomal dominant, late-onset PD that is clinically indistinguishable from typical, idiopathic disease. LRRK2 is a multidomain protein containing several protein interaction motifs as well as dual enzymatic domains of GTPase and protein kinase activities. Disease-associated mutations are found throughout the multidomain structure of the protein. LRRK2, however, is unique among the PD-causing genes, because a missense mutation, G2019S, is a frequent determinant of not only familial but also sporadic PD. Thus, LRRK2 has emerged as a promising therapeutic target for combating PD. In this Mini-Review, we look at the current state of knowledge regarding the domain structure, amino acid substitutions, and potential functional roles of LRRK2.
Collapse
Affiliation(s)
- Payal N Gandhi
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio 44106-4965, USA
| | | | | |
Collapse
|
29
|
Guo L, Gandhi PN, Wang W, Petersen RB, Wilson-Delfosse AL, Chen SG. The Parkinson's disease-associated protein, leucine-rich repeat kinase 2 (LRRK2), is an authentic GTPase that stimulates kinase activity. Exp Cell Res 2007; 313:3658-70. [PMID: 17706965 PMCID: PMC2083285 DOI: 10.1016/j.yexcr.2007.07.007] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 07/04/2007] [Accepted: 07/12/2007] [Indexed: 02/09/2023]
Abstract
Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene are the leading cause of autosomal dominant Parkinson's disease (PD). LRRK2, a member of the ROCO protein family, contains both Ras GTPase-like (Roc) and kinase (MAPKKK) domains, as well as other functional motifs. Here, we have identified LRRK2 as the first mammalian ROCO protein that is an authentic and functional GTPase, defined by the ability to bind GTP and undergo intrinsic GTP hydrolysis. Furthermore, the Roc domain is sufficient for this native GTPase activity and binds and hydrolyzes GTP indistinguishably from the Ras-related small GTPase, Rac1. The PD-associated mutation, R1441C, located within the Roc domain, leads to an increase in LRRK2 kinase activity and a decrease in the rate of GTP hydrolysis, compared to the wild-type protein, in an in vitro assay. This finding suggests that the R1441C mutation may help stabilize an activated state of LRRK2. Additionally, LRRK2-mediated phosphorylation is stimulated upon binding of non-hydrolyzable GTP analogs, suggesting that LRRK2 is an MAPKKK-activated intramolecularly by its own GTPase. Since GTPases and MAPKKKs are upstream regulators of multiple signal transduction cascades, LRRK2 may play a central role in integrating pathways involved in neuronal cell signaling and the pathogenesis of PD.
Collapse
Affiliation(s)
- Luxuan Guo
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106
| | - Payal N. Gandhi
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106
| | - Wen Wang
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106
| | - Robert B. Petersen
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106
| | - Amy L. Wilson-Delfosse
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106
- Corresponding authors: Shu G. Chen, Institute of Pathology, Case Western Reserve University, Cleveland OH, 44106-7288; Tel. 216-368-8925; Fax. 216-368-0494; or Amy L. Wilson-Delfosse, Department of Pharmacology, Case Western Reserve University, Cleveland OH, 44106-4965; Tel. 216-368-3494; Fax. 216-368-3395;
| | - Shu G. Chen
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106
- Corresponding authors: Shu G. Chen, Institute of Pathology, Case Western Reserve University, Cleveland OH, 44106-7288; Tel. 216-368-8925; Fax. 216-368-0494; or Amy L. Wilson-Delfosse, Department of Pharmacology, Case Western Reserve University, Cleveland OH, 44106-4965; Tel. 216-368-3494; Fax. 216-368-3395;
| |
Collapse
|
30
|
Zhu X, Babar A, Siedlak SL, Yang Q, Ito G, Iwatsubo T, Smith MA, Perry G, Chen SG. LRRK2 in Parkinson's disease and dementia with Lewy bodies. Mol Neurodegener 2006; 1:17. [PMID: 17137507 PMCID: PMC1693553 DOI: 10.1186/1750-1326-1-17] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2006] [Accepted: 11/30/2006] [Indexed: 11/30/2022] Open
Abstract
Background Mutations in LRRK2 encoding leucine-rich repeat kinase 2 are thus far the most frequent genetic cause associated with autosomal dominant and idiopathic Parkinson's disease (PD). To examine whether LRRK2 is directly associated with neuropathology of PD and other related disorders, we analyzed LRRK2 in brains of patients affected by PD and dementia with Lewy bodies (DLB) using highly specific antibodies to LRRK2. Results We demonstrated that anti-LRRK2 antibodies strongly labelled brainstem and cortical Lewy bodies, the pathological hallmarks of PD and DLB, respectively. In addition, anti-LRRK2 also labelled brain vasculature, axons, and neuronal cell bodies. Interestingly, the immunocytochemical profile of LRRK2 varied with different antibodies depending upon specific antigenic sites along the LRRK2 protein. All anti-LRRK2 antibodies tested that were raised against various regions of LRRK2, were found to be immunoreactive to recombinant LRRK2 on Western blots. However, only the antibodies raised against the N-terminal and C-terminal regions of LRRK2, but not the regions containing folded protein domains, were positive in immunolabeling of Lewy bodies, suggesting a differential exposure of specific antigenic sites of LRRK2 on tissue sections. Conclusion We conclude that LRRK2 is a component of Lewy bodies in both PD and DLB, and therefore plays an important role in the Lewy body formation and disease pathogenesis. Information on the cellular localization of LRRK2 under normal and pathological conditions will deepen our understanding of its functions and molecular pathways relevant to the progression of PD and related disorders.
Collapse
Affiliation(s)
- Xiongwei Zhu
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Asim Babar
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Sandra L Siedlak
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Qiwei Yang
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Genta Ito
- Department of Neuropathology and Neuroscience, University of Tokyo, Tokyo, Japan
| | - Takeshi Iwatsubo
- Department of Neuropathology and Neuroscience, University of Tokyo, Tokyo, Japan
| | - Mark A Smith
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| | - George Perry
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
- College of Sciences, University of Texas at San Antonio, San Antonio, Texas, USA
| | - Shu G Chen
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, USA
| |
Collapse
|
31
|
Zhu X, Siedlak SL, Smith MA, Perry G, Chen SG. LRRK2 protein is a component of Lewy bodies. Ann Neurol 2006; 60:617-618. [PMID: 16847950 DOI: 10.1002/ana.20928] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
32
|
Abstract
Mutations in the human leucine-rich repeat kinase 2 (LRRK2) gene are associated with both familial and sporadic Parkinson disease (PD). LRRK2 belongs to a gene family known as Roco. Roco genes encode for large proteins with several protein domains. Particularly, all Roco proteins have a characteristic GTPase domain, named Roc, plus a domain of unknown function called COR. In addition, LRRK2 and several other Roco proteins also contain a protein kinase domain. In this study, I use a combination of phylogenetic and structural analyses of the COR, Roc, and kinase domains present in Roco proteins to describe the origin and evolutionary history of LRRK2. Phylogenetic analyses using these domains demonstrate that LRRK2 emerged from a duplication that occurred after the protostome-deuterostome split. The duplication was followed by the acquisition by LRRK2 proteins of a specific type of N-terminal repeat, described here for the first time. This repeat is absent in the proteins encoded by the paralogs of LRRK2, called LRRK1 or in protostome LRRK proteins. These results suggest that Drosophila or Caenorhabditis LRRK genes may not be good models to understand human LRRK2 function. Genes in the slime mold Dictyostelium discoideum with structures very similar to those found in animal LRRK genes, including the protein kinase domain, have been described. However, phylogenetic analyses suggest that this structural similarity is due to independent acquisitions of distantly related protein kinase domains. Finally, I confirm in an extensive sequence analysis that the Roc GTPase domain is related but still substantially different from small GTPases, such as Rab, Ras, or Rho. Modeling based on known kinase structures suggests that mutations in LRRK2 that cause familiar PD may alter the local 3-dimensional folding of the LRRK2 protein without affecting its overall structure.
Collapse
Affiliation(s)
- Ignacio Marín
- Departamento de Genética, Universidad de Valencia, Burjassot, Spain.
| |
Collapse
|