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Rimoldi M, Romagnoli G, Magri F, Antognozzi S, Cinnante C, Saccani E, Ciscato P, Zanotti S, Velardo D, Corti S, Comi GP, Ronchi D. Case report: A novel patient presenting TRIM32-related limb-girdle muscular dystrophy. Front Neurol 2024; 14:1281953. [PMID: 38304327 PMCID: PMC10831852 DOI: 10.3389/fneur.2023.1281953] [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: 08/23/2023] [Accepted: 12/19/2023] [Indexed: 02/03/2024] Open
Abstract
Limb-girdle muscular dystrophy autosomal recessive 8 (LGMDR8) is a rare clinical manifestation caused by the presence of biallelic variants in the TRIM32 gene. We present the clinical, molecular, histopathological, and muscle magnetic resonance findings of a novel 63-years-old LGMDR8 patient of Italian origins, who went undiagnosed for 24 years. Clinical exome sequencing identified two TRIM32 missense variants, c.1181G > A p.(Arg394His) and c.1781G > A p.(Ser594Asp), located in the NHL1 and NHL4 structural domains, respectively, of the TRIM32 protein. We conducted a literature review of the clinical and instrumental data associated to the so far known 26 TRIM32 variants, carried biallelically by 53 LGMDR8 patients reported to date in 20 papers. Our proband's variants were previously identified only in three independent LGMDR8 patients in homozygosis, therefore our case is the first in literature to be described as compound heterozygous for such variants. Our report also provides additional data in support of their pathogenicity, since p.(Arg394His) is currently classified as a variant of uncertain significance, while p.(Ser594Asp) as likely pathogenic. Taken together, these findings might be useful to improve both the genetic counseling and the diagnostic accuracy of this rare neuromuscular condition.
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Affiliation(s)
- Martina Rimoldi
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Gloria Romagnoli
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Magri
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sara Antognozzi
- Neurology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Claudia Cinnante
- Department of Radiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Elena Saccani
- Neurology Unit, Department of Specialized Medicine, University Hospital of Parma, Parma, Italy
| | - Patrizia Ciscato
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Simona Zanotti
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Daniele Velardo
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stefania Corti
- Neuromuscular and Rare Disease Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giacomo Pietro Comi
- Neurology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Dario Ronchi
- Neurology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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Jeong SY, Choi JH, Kim J, Woo JS, Lee EH. Tripartite Motif-Containing Protein 32 (TRIM32): What Does It Do for Skeletal Muscle? Cells 2023; 12:2104. [PMID: 37626915 PMCID: PMC10453674 DOI: 10.3390/cells12162104] [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: 07/19/2023] [Revised: 08/07/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
Tripartite motif-containing protein 32 (TRIM32) is a member of the tripartite motif family and is highly conserved from flies to humans. Via its E3 ubiquitin ligase activity, TRIM32 mediates and regulates many physiological and pathophysiological processes, such as growth, differentiation, muscle regeneration, immunity, and carcinogenesis. TRIM32 plays multifunctional roles in the maintenance of skeletal muscle. Genetic variations in the TRIM32 gene are associated with skeletal muscular dystrophies in humans, including limb-girdle muscular dystrophy type 2H (LGMD2H). LGMD2H-causing genetic variations of TRIM32 occur most frequently in the C-terminal NHL (ncl-1, HT2A, and lin-41) repeats of TRIM32. LGMD2H is characterized by skeletal muscle dystrophy, myopathy, and atrophy. Surprisingly, most patients with LGMD2H show minimal or no dysfunction in other tissues or organs, despite the broad expression of TRIM32 in various tissues. This suggests more prominent roles for TRIM32 in skeletal muscle than in other tissues or organs. This review is focused on understanding the physiological roles of TRIM32 in skeletal muscle, the pathophysiological mechanisms mediated by TRIM32 genetic variants in LGMD2H patients, and the correlations between TRIM32 and Duchenne muscular dystrophy (DMD).
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Affiliation(s)
- Seung Yeon Jeong
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jun Hee Choi
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jooho Kim
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jin Seok Woo
- Department of Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 10833, USA
| | - Eun Hui Lee
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
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3
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Choi JH, Jeong SY, Kim J, Woo JS, Lee EH. Tripartite motif-containing protein 32 regulates Ca 2+ movement in skeletal muscle. Am J Physiol Cell Physiol 2022; 323:C1860-C1871. [PMID: 36374170 DOI: 10.1152/ajpcell.00426.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mutations in tripartite motif-containing protein 32 (TRIM32), especially in NHL repeats, have been found in skeletal muscle in patients with type 2H limb-girdle muscular dystrophy (LGMD2H). However, the roles of the NHL repeats of TRIM32 in skeletal muscle functions have not been well addressed. In the present study, to examine the functional role(s) of the TRIM32 NHL repeats in skeletal muscle, TRIM32-binding proteins in skeletal muscle were first searched using a binding assay and MALDI-TOF/TOF. Sarcoplasmic/endoplasmic reticulum Ca2+-ATPase 1a (SERCA1a) was found to be a TRIM32-binding protein. Next, a deletion mutant of TRIM32 missing the NHL repeats (NHL-Del) was expressed in mouse primary skeletal myotubes during myoblast differentiation into myotubes. Ca2+ movement in the myotubes was examined using single-cell Ca2+ imaging. Unlike wild-type (WT) TRIM32, NHL-Del did not enhance the amount of Ca2+ release from the sarcoplasmic reticulum (SR), Ca2+ release for excitation-contraction (EC) coupling, or extracellular Ca2+ entry via store-operated Ca2+ entry (SOCE). In addition, even compared with the vector control, NHL-Del resulted in reduced SOCE due to reduced expression of extracellular Ca2+ entry channels. Transmission electron microscopy (TEM) observation of the myotubes revealed that NHL-Del induced the formation of abnormal vacuoles and tubular structures in the cytosol. Therefore, by binding to SERCA1a via its NHL repeats, TRIM32 may participate in the regulation of Ca2+ movement for skeletal muscle contraction and the formation of cellular vacuoles and tubular structures in skeletal muscle. Functional defects in TRIM32 due to mutations in NHL repeats may be pathogenic toward LGMD2H.
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Affiliation(s)
- Jun Hee Choi
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul, Korea
| | - Seung Yeon Jeong
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul, Korea
| | - Jooho Kim
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul, Korea
| | - Jin Seok Woo
- Department of Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Eun Hui Lee
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul, Korea
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Ganassi M, Muntoni F, Zammit PS. Defining and identifying satellite cell-opathies within muscular dystrophies and myopathies. Exp Cell Res 2022; 411:112906. [PMID: 34740639 PMCID: PMC8784828 DOI: 10.1016/j.yexcr.2021.112906] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 10/12/2021] [Accepted: 10/29/2021] [Indexed: 12/19/2022]
Abstract
Muscular dystrophies and congenital myopathies arise from specific genetic mutations causing skeletal muscle weakness that reduces quality of life. Muscle health relies on resident muscle stem cells called satellite cells, which enable life-course muscle growth, maintenance, repair and regeneration. Such tuned plasticity gradually diminishes in muscle diseases, suggesting compromised satellite cell function. A central issue however, is whether the pathogenic mutation perturbs satellite cell function directly and/or indirectly via an increasingly hostile microenvironment as disease progresses. Here, we explore the effects on satellite cell function of pathogenic mutations in genes (myopathogenes) that associate with muscle disorders, to evaluate clinical and muscle pathological hallmarks that define dysfunctional satellite cells. We deploy transcriptomic analysis and comparison between muscular dystrophies and myopathies to determine the contribution of satellite cell dysfunction using literature, expression dynamics of myopathogenes and their response to the satellite cell regulator PAX7. Our multimodal approach extends current pathological classifications to define Satellite Cell-opathies: muscle disorders in which satellite cell dysfunction contributes to pathology. Primary Satellite Cell-opathies are conditions where mutations in a myopathogene directly affect satellite cell function, such as in Progressive Congenital Myopathy with Scoliosis (MYOSCO) and Carey-Fineman-Ziter Syndrome (CFZS). Primary satellite cell-opathies are generally characterised as being congenital with general hypotonia, and specific involvement of respiratory, trunk and facial muscles, although serum CK levels are usually within the normal range. Secondary Satellite Cell-opathies have mutations in myopathogenes that affect both satellite cells and muscle fibres. Such classification aids diagnosis and predicting probable disease course, as well as informing on treatment and therapeutic development.
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Affiliation(s)
- Massimo Ganassi
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, SE1 1UL, UK.
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, United Kingdom; NIHR Great Ormond Street Hospital Biomedical Research Centre, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, United Kingdom
| | - Peter S Zammit
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, SE1 1UL, UK.
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5
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Olguín HC. The Gentle Side of the UPS: Ubiquitin-Proteasome System and the Regulation of the Myogenic Program. Front Cell Dev Biol 2022; 9:821839. [PMID: 35127730 PMCID: PMC8811165 DOI: 10.3389/fcell.2021.821839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/30/2021] [Indexed: 12/12/2022] Open
Abstract
In recent years, the ubiquitin-proteasome system (UPS) has emerged as an important regulator of stem cell function. Here we review recent findings indicating that UPS also plays critical roles in the biology of satellite cells, the muscle stem cell responsible for its maintenance and regeneration. While we focus our attention on the control of key transcriptional regulators of satellite cell function, we briefly discuss early studies suggesting the UPS participates more broadly in the regulation of satellite cell stemness and regenerative capacity.
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6
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Chen Z, Tian L, Wang L, Ma X, Lei F, Chen X, Fu R. TRIM32 Inhibition Attenuates Apoptosis, Oxidative Stress, and Inflammatory Injury in Podocytes Induced by High Glucose by Modulating the Akt/GSK-3β/Nrf2 Pathway. Inflammation 2021; 45:992-1006. [PMID: 34783942 DOI: 10.1007/s10753-021-01597-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 11/05/2021] [Indexed: 11/27/2022]
Abstract
Hyperglycemia-induced oxidative stress in podocytes exerts a major role in the pathological process of diabetic nephropathy. Tripartite motif-containing protein 32 (TRIM32) has been reported to be a key protein in the modulation of cellular apoptosis and oxidative stress under various pathological processes. However, whether TRIM32 participates in the regulation of high glucose (HG)-induced injury in podocytes has not been investigated. This work aimed to assess the possible role of TRIM32 in mediating HG-induced apoptosis, oxidative stress, and inflammatory response in podocytes in vitro. Our results showed a marked increase in TRIM32 expression in HG-exposed podocytes and the glomeruli of diabetic mice. Loss-of-function experiments showed that TRIM32 knockdown improves the viability of HG-stimulated podocytes and suppresses HG-induced apoptosis, oxidative stress, and inflammatory responses in podocytes. Further investigation revealed that TRIM32 inhibition enhances the activation of nuclear factor erythroid 2-related factor 2 (Nrf2) signaling, which is associated with the modulation of the Akt/glycogen synthase kinase-3β (GSK-3β) axis in podocytes following HG exposure. However, Akt suppression abrogated the TRIM32 knockdown-mediated activation of Nrf2 in HG-exposed podocytes. Nrf2 knockdown also markedly abolished the protective effects induced by TRIM32 inhibition o in HG-exposed podocytes. In summary, this work demonstrated that TRIM32 inhibition protects podocytes from HG-induced injury by potentiating Nrf2 signaling through modulation of Akt/GSK-3β signaling. The findings reveal the potential role of TRIM32 in mediating podocyte injury during the progression of diabetic nephropathy.
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Affiliation(s)
- Zhao Chen
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China
| | - Lifang Tian
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China
| | - Li Wang
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China
| | - Xiaotao Ma
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China
| | - Fuqian Lei
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China
| | - Xianghui Chen
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China
| | - Rongguo Fu
- Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xincheng District, Xi'an, 710004, Shaanxi Province, China.
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7
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Ravenscroft G, Cabrera-Serrano M. Another step towards defining the genetic landscape of rhabdomyolysis. Brain 2021; 144:2560-2561. [PMID: 34581775 DOI: 10.1093/brain/awab308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 08/11/2021] [Indexed: 01/01/2023] Open
Abstract
This scientific commentary refers to ‘MLIP causes recessive myopathy with rhabdomyolysis, myalgia and baseline high serum creatine kinase’, by Lopes Abath Neto et al. (doi:10.1093/brain/awab275).
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Affiliation(s)
- Gianina Ravenscroft
- Harry Perkins Institute of Medical Research, Nedlands, WA, Australia.,Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia.,School of Biomedical Sciences, University of Western Australia, Nedlands, WA, Australia
| | - Macarena Cabrera-Serrano
- Unidad Enfermedades Neuromusculares, Servicio de Neurología y Neurofisiología Clínica, Hospital Universitario Virgen del Rocío, Sevilla, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
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8
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Wei XJ, Miao J, Kang ZX, Gao YL, Wang ZY, Yu XF. A novel homozygous exon2 deletion of TRIM32 gene in a Chinese patient with sarcotubular myopathy: A case report and literature review. Bosn J Basic Med Sci 2021; 21:495-500. [PMID: 33485293 PMCID: PMC8292861 DOI: 10.17305/bjbms.2020.5288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 12/18/2020] [Indexed: 11/18/2022] Open
Abstract
Sarcotubular myopathy (STM) is a rare autosomal recessive myopathy caused by TRIM32 gene mutations. It is predominantly characterized by the weakness of the proximal limb and mild to moderate elevation of creatine kinase levels. In this study, we describe a 50-year-old Chinese man who exhibited a proximal-to-distal weakness in the muscles of the lower limbs and who had difficulty standing up from a squat position. The symptoms gradually became more severe. He denied a history of cognitive or cardiological problems. The patient’s parents and children were healthy. Histopathological examination revealed dystrophic changes and irregular slit-shaped vacuoles containing amorphous materials. Whole-exome sequencing consisting of protein-encoding regions of 19,396 genes was performed, the results of which identified one novel homozygous 2kb deletion chr9.hg19: g.119460021_119461983del (exon2) in the TRIM32 gene. This was confirmed at the homozygous state with quantitative real-time polymerase chain reaction. Here, we present a Chinese case of STM with one novel mutation in TRIM32 and provide a brief summary of all known pathogenic mutations in TRIM32.
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Affiliation(s)
- Xiao-Jing Wei
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| | - Jing Miao
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| | - Zhi-Xia Kang
- Department of Neurology, The Municipal People's Hospital of Yan'an, Yan'an, China
| | - Yan-Lu Gao
- Department of Neurology, The First Affiliated Hospital of Binzhou Medical University, Binzhou, China
| | - Zi-Yi Wang
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
| | - Xue-Fan Yu
- Department of Neurology and Neuroscience Center, The First Affiliated Hospital of Jilin University, Jilin, China
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Chandrasekharan SV, Sundaram S, Malaichamy S, Poyuran R, Nair SS. Myoneuropathic presentation of limb girdle muscular dystrophy R8 with a novel TRIM32 mutation. Neuromuscul Disord 2021; 31:886-890. [PMID: 34244021 DOI: 10.1016/j.nmd.2021.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 11/15/2022]
Abstract
TRIM 32-related Limb Girdle Muscular Dystrophy (LGMD R8/2H) is a rare genetic muscle disease reported in fewer than 100 patients worldwide. Here, we report a male patient with progressive proximo-distal lower limb weakness with onset in the third decade who had mixed myopathic and neurogenic pattern in electrophysiology and muscle biopsy. Clinical exome sequencing revealed a homozygous pathogenic single base pair insertion in exon 2 of the TRIM32 gene confirming the diagnosis of LGMD R8. This is a novel frameshift mutation and one of the very few cases of LGMD R8 reported from India.
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Affiliation(s)
- Soumya V Chandrasekharan
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Soumya Sundaram
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | | | - Rajalakshmy Poyuran
- Department of Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Sruthi S Nair
- Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
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10
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Garcia-Garcia J, Overå KS, Khan W, Sjøttem E. Generation of the short TRIM32 isoform is regulated by Lys 247 acetylation and a PEST sequence. PLoS One 2021; 16:e0251279. [PMID: 33999923 PMCID: PMC8128265 DOI: 10.1371/journal.pone.0251279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 02/28/2021] [Indexed: 01/24/2023] Open
Abstract
TRIM32 is an E3 ligase implicated in diverse biological pathways and pathologies such as muscular dystrophy and cancer. TRIM32 are expressed both as full-length proteins, and as a truncated protein. The mechanisms for regulating these isoforms are poorly understood. Here we identify a PEST sequence in TRIM32 located in the unstructured region between the RING-BBox-CoiledCoil domains and the NHL repeats. The PEST sequence directs cleavage of TRIM32, generating a truncated protein similarly to the short isoform. We map three lysine residues that regulate PEST mediated cleavage and auto-ubiquitylation activity of TRIM32. Mimicking acetylation of lysine K247 completely inhibits TRIM32 cleavage, while the lysines K50 and K401 are implicated in auto-ubiquitylation activity. We show that the short isoform of TRIM32 is catalytic inactive, suggesting a dominant negative role. These findings uncover that TRIM32 is regulated by post-translational modifications of three lysine residues, and a conserved PEST sequence.
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Affiliation(s)
- Juncal Garcia-Garcia
- Department of Medical Biology, Autophagy Research Group, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Katrine Stange Overå
- Department of Medical Biology, Autophagy Research Group, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Waqas Khan
- Department of Medical Biology, Autophagy Research Group, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Eva Sjøttem
- Department of Medical Biology, Autophagy Research Group, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
- * E-mail:
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11
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Coppens S, Barnard AM, Puusepp S, Pajusalu S, Õunap K, Vargas-Franco D, Bruels CC, Donkervoort S, Pais L, Chao KR, Goodrich JK, England EM, Weisburd B, Ganesh VS, Gudmundsson S, O'Donnell-Luria A, Nigul M, Ilves P, Mohassel P, Siddique T, Milone M, Nicolau S, Maroofian R, Houlden H, Hanna MG, Quinlivan R, Beiraghi Toosi M, Ghayoor Karimiani E, Costagliola S, Deconinck N, Kadhim H, Macke E, Lanpher BC, Klee EW, Łusakowska A, Kostera-Pruszczyk A, Hahn A, Schrank B, Nishino I, Ogasawara M, El Sherif R, Stojkovic T, Nelson I, Bonne G, Cohen E, Boland-Augé A, Deleuze JF, Meng Y, Töpf A, Vilain C, Pacak CA, Rivera-Zengotita ML, Bönnemann CG, Straub V, Handford PA, Draper I, Walter GA, Kang PB. A form of muscular dystrophy associated with pathogenic variants in JAG2. Am J Hum Genet 2021; 108:840-856. [PMID: 33861953 PMCID: PMC8206160 DOI: 10.1016/j.ajhg.2021.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/26/2021] [Indexed: 02/09/2023] Open
Abstract
JAG2 encodes the Notch ligand Jagged2. The conserved Notch signaling pathway contributes to the development and homeostasis of multiple tissues, including skeletal muscle. We studied an international cohort of 23 individuals with genetically unsolved muscular dystrophy from 13 unrelated families. Whole-exome sequencing identified rare homozygous or compound heterozygous JAG2 variants in all 13 families. The identified bi-allelic variants include 10 missense variants that disrupt highly conserved amino acids, a nonsense variant, two frameshift variants, an in-frame deletion, and a microdeletion encompassing JAG2. Onset of muscle weakness occurred from infancy to young adulthood. Serum creatine kinase (CK) levels were normal or mildly elevated. Muscle histology was primarily dystrophic. MRI of the lower extremities revealed a distinct, slightly asymmetric pattern of muscle involvement with cores of preserved and affected muscles in quadriceps and tibialis anterior, in some cases resembling patterns seen in POGLUT1-associated muscular dystrophy. Transcriptome analysis of muscle tissue from two participants suggested misregulation of genes involved in myogenesis, including PAX7. In complementary studies, Jag2 downregulation in murine myoblasts led to downregulation of multiple components of the Notch pathway, including Megf10. Investigations in Drosophila suggested an interaction between Serrate and Drpr, the fly orthologs of JAG1/JAG2 and MEGF10, respectively. In silico analysis predicted that many Jagged2 missense variants are associated with structural changes and protein misfolding. In summary, we describe a muscular dystrophy associated with pathogenic variants in JAG2 and evidence suggests a disease mechanism related to Notch pathway dysfunction.
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Affiliation(s)
- Sandra Coppens
- Center of Human Genetics, Université Libre de Bruxelles, 1070 Brussels, Belgium
| | - Alison M Barnard
- Department of Physical Therapy, University of Florida College of Public Health and Health Professions, Gainesville, FL 32610, USA
| | - Sanna Puusepp
- Department of Clinical Genetics, United Laboratories, Tartu University Hospital, Tartu 50406, Estonia; Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Sander Pajusalu
- Department of Clinical Genetics, United Laboratories, Tartu University Hospital, Tartu 50406, Estonia; Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Katrin Õunap
- Department of Clinical Genetics, United Laboratories, Tartu University Hospital, Tartu 50406, Estonia; Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia
| | - Dorianmarie Vargas-Franco
- Division of Pediatric Neurology, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Christine C Bruels
- Division of Pediatric Neurology, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Sandra Donkervoort
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, NINDS, NIH, Bethesda, MD 20892, USA
| | - Lynn Pais
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Katherine R Chao
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Julia K Goodrich
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Eleina M England
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ben Weisburd
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Vijay S Ganesh
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Neurology, Brigham & Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Sanna Gudmundsson
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Anne O'Donnell-Luria
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA; Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Mait Nigul
- Department of Radiology, Tartu University Hospital, Tartu 50406, Estonia
| | - Pilvi Ilves
- Institute of Clinical Medicine, University of Tartu, Tartu 50406, Estonia; Department of Radiology, Tartu University Hospital, Tartu 50406, Estonia
| | - Payam Mohassel
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, NINDS, NIH, Bethesda, MD 20892, USA
| | - Teepu Siddique
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | | | - Stefan Nicolau
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Reza Maroofian
- Department of Neuromuscular Disorders, University College London Institute of Neurology, London WC1E 6BT, UK
| | - Henry Houlden
- Department of Neuromuscular Disorders, University College London Institute of Neurology, London WC1E 6BT, UK
| | - Michael G Hanna
- Department of Neuromuscular Disorders, University College London Institute of Neurology, London WC1E 6BT, UK
| | - Ros Quinlivan
- Department of Neuromuscular Disorders, University College London Institute of Neurology, London WC1E 6BT, UK
| | - Mehran Beiraghi Toosi
- Pediatric Neurology Department, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad 9176999311, Iran
| | - Ehsan Ghayoor Karimiani
- Molecular and Clinical Sciences Institute, St. George's, University of London, Cranmer Terrace, London SW17 0RE, UK; Innovative Medical Research Center, Mashhad Branch, Islamic Azad University, Mashhad 9187147578, Iran
| | - Sabine Costagliola
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moleculaire, Université Libre de Bruxelles, 1070 Brussels, Belgium
| | - Nicolas Deconinck
- Centre de Référence Neuromusculaire and Paediatric Neurology Department, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, 1020 Brussels, Belgium
| | - Hazim Kadhim
- Neuropathology Unit, Department of Anatomic Pathology and Reference Center for Neuromuscular Pathology, Brugmann University Hospital-Children's Hospital, Université Libre de Bruxelles, 1020 Brussels, Belgium
| | - Erica Macke
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Brendan C Lanpher
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA; Department of Clinical Genomics, Mayo Clinic, Rochester, MN 55905, USA
| | - Eric W Klee
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA; Department of Clinical Genomics, Mayo Clinic, Rochester, MN 55905, USA
| | - Anna Łusakowska
- Department of Neurology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | | | - Andreas Hahn
- Department of Child Neurology, Justus-Liebig-University Giessen, 35390 Giessen, Germany
| | - Bertold Schrank
- Department of Neurology, DKD HELIOS Klinik Wiesbaden, 65191 Wiesbaden, Germany
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo 187-8551, Japan
| | - Masashi Ogasawara
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo 187-8551, Japan
| | - Rasha El Sherif
- Myo-Care Neuromuscular Center, Myo-Care National Foundation, Cairo 11865, Egypt
| | - Tanya Stojkovic
- APHP, Nord-Est/Ile-de-France Neuromuscular Reference Center, Myology Institute, Pitié-Salpêtrière Hospital, 75013 Paris, France; Sorbonne Université, INSERM, Center of Research in Myology, UMRS974, 75651 Paris Cedex 13, France
| | - Isabelle Nelson
- Sorbonne Université, INSERM, Center of Research in Myology, UMRS974, 75651 Paris Cedex 13, France
| | - Gisèle Bonne
- Sorbonne Université, INSERM, Center of Research in Myology, UMRS974, 75651 Paris Cedex 13, France
| | - Enzo Cohen
- Sorbonne Université, INSERM, Center of Research in Myology, UMRS974, 75651 Paris Cedex 13, France
| | - Anne Boland-Augé
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine, 91057 Evry, France
| | - Jean-François Deleuze
- Université Paris-Saclay, CEA, Centre National de Recherche en Génomique Humaine, 91057 Evry, France
| | - Yao Meng
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Ana Töpf
- John Walton Muscular Dystrophy Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne NE1 3BZ, UK
| | - Catheline Vilain
- Center of Human Genetics, Université Libre de Bruxelles, 1070 Brussels, Belgium
| | - Christina A Pacak
- Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA; Paul and Sheila Wellstone Muscular Dystrophy Center, University of Minnesota Medical School, Minneapolis, MN 55455, USA; Department of Neurology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | | | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, Neurogenetics Branch, NINDS, NIH, Bethesda, MD 20892, USA
| | - Volker Straub
- John Walton Muscular Dystrophy Research Centre, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne NE1 3BZ, UK
| | - Penny A Handford
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
| | - Isabelle Draper
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Glenn A Walter
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Peter B Kang
- Division of Pediatric Neurology, Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL 32610, USA; Paul and Sheila Wellstone Muscular Dystrophy Center, University of Minnesota Medical School, Minneapolis, MN 55455, USA; Department of Neurology, University of Minnesota Medical School, Minneapolis, MN 55455, USA; Institute for Translational Neuroscience, University of Minnesota Medical School, Minneapolis, MN 55455, USA.
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12
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TRIM32 and Malin in Neurological and Neuromuscular Rare Diseases. Cells 2021; 10:cells10040820. [PMID: 33917450 PMCID: PMC8067510 DOI: 10.3390/cells10040820] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/01/2021] [Accepted: 04/04/2021] [Indexed: 12/27/2022] Open
Abstract
Tripartite motif (TRIM) proteins are RING E3 ubiquitin ligases defined by a shared domain structure. Several of them are implicated in rare genetic diseases, and mutations in TRIM32 and TRIM-like malin are associated with Limb-Girdle Muscular Dystrophy R8 and Lafora disease, respectively. These two proteins are evolutionary related, share a common ancestor, and both display NHL repeats at their C-terminus. Here, we revmniew the function of these two related E3 ubiquitin ligases discussing their intrinsic and possible common pathophysiological pathways.
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13
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Joseph J, Doles JD. Disease-associated metabolic alterations that impact satellite cells and muscle regeneration: perspectives and therapeutic outlook. Nutr Metab (Lond) 2021; 18:33. [PMID: 33766031 PMCID: PMC7992337 DOI: 10.1186/s12986-021-00565-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 03/15/2021] [Indexed: 11/10/2022] Open
Abstract
Many chronic disease patients experience a concurrent loss of lean muscle mass. Skeletal muscle is a dynamic tissue maintained by continuous protein turnover and progenitor cell activity. Muscle stem cells, or satellite cells, differentiate (by a process called myogenesis) and fuse to repair and regenerate muscle. During myogenesis, satellite cells undergo extensive metabolic alterations; therefore, pathologies characterized by metabolic derangements have the potential to impair myogenesis, and consequently exacerbate skeletal muscle wasting. How disease-associated metabolic disruptions in satellite cells might be contributing to wasting is an important question that is largely neglected. With this review we highlight the impact of various metabolic disruptions in disease on myogenesis and skeletal muscle regeneration. We also discuss metabolic therapies with the potential to improve myogenesis, skeletal muscle regeneration, and ultimately muscle mass.
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Affiliation(s)
- Josiane Joseph
- Mayo Clinic Medical Scientist Training Program, Mayo Clinic, Rochester, MN, USA
| | - Jason D Doles
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.
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14
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Bawa S, Piccirillo R, Geisbrecht ER. TRIM32: A Multifunctional Protein Involved in Muscle Homeostasis, Glucose Metabolism, and Tumorigenesis. Biomolecules 2021; 11:biom11030408. [PMID: 33802079 PMCID: PMC7999776 DOI: 10.3390/biom11030408] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/05/2021] [Accepted: 03/06/2021] [Indexed: 12/13/2022] Open
Abstract
Human tripartite motif family of proteins 32 (TRIM32) is a ubiquitous multifunctional protein that has demonstrated roles in differentiation, muscle physiology and regeneration, and tumor suppression. Mutations in TRIM32 result in two clinically diverse diseases. A mutation in the B-box domain gives rise to Bardet–Biedl syndrome (BBS), a disease whose clinical presentation shares no muscle pathology, while mutations in the NHL (NCL-1, HT2A, LIN-41) repeats of TRIM32 causes limb-girdle muscular dystrophy type 2H (LGMD2H). TRIM32 also functions as a tumor suppressor, but paradoxically is overexpressed in certain types of cancer. Recent evidence supports a role for TRIM32 in glycolytic-mediated cell growth, thus providing a possible mechanism for TRIM32 in the accumulation of cellular biomass during regeneration and tumorigenesis, including in vitro and in vivo approaches, to understand the broad spectrum of TRIM32 functions. A special emphasis is placed on the utility of the Drosophila model, a unique system to study glycolysis and anabolic pathways that contribute to the growth and homeostasis of both normal and tumor tissues.
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Affiliation(s)
- Simranjot Bawa
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506, USA;
| | - Rosanna Piccirillo
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy;
| | - Erika R. Geisbrecht
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506, USA;
- Correspondence: ; Tel.: +1-(785)-532-3105
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15
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Peris-Moreno D, Cussonneau L, Combaret L, Polge C, Taillandier D. Ubiquitin Ligases at the Heart of Skeletal Muscle Atrophy Control. Molecules 2021; 26:molecules26020407. [PMID: 33466753 PMCID: PMC7829870 DOI: 10.3390/molecules26020407] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle loss is a detrimental side-effect of numerous chronic diseases that dramatically increases mortality and morbidity. The alteration of protein homeostasis is generally due to increased protein breakdown while, protein synthesis may also be down-regulated. The ubiquitin proteasome system (UPS) is a master regulator of skeletal muscle that impacts muscle contractile properties and metabolism through multiple levers like signaling pathways, contractile apparatus degradation, etc. Among the different actors of the UPS, the E3 ubiquitin ligases specifically target key proteins for either degradation or activity modulation, thus controlling both pro-anabolic or pro-catabolic factors. The atrogenes MuRF1/TRIM63 and MAFbx/Atrogin-1 encode for key E3 ligases that target contractile proteins and key actors of protein synthesis respectively. However, several other E3 ligases are involved upstream in the atrophy program, from signal transduction control to modulation of energy balance. Controlling E3 ligases activity is thus a tempting approach for preserving muscle mass. While indirect modulation of E3 ligases may prove beneficial in some situations of muscle atrophy, some drugs directly inhibiting their activity have started to appear. This review summarizes the main signaling pathways involved in muscle atrophy and the E3 ligases implicated, but also the molecules potentially usable for future therapies.
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16
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Bawa S, Gameros S, Baumann K, Brooks DS, Kollhoff JA, Zolkiewski M, Re Cecconi AD, Panini N, Russo M, Piccirillo R, Johnson DK, Kashipathy MM, Battaile KP, Lovell S, Bouyain SEA, Kawakami J, Geisbrecht ER. Costameric integrin and sarcoglycan protein levels are altered in a Drosophila model for Limb-girdle muscular dystrophy type 2H. Mol Biol Cell 2020; 32:260-273. [PMID: 33296226 PMCID: PMC8098830 DOI: 10.1091/mbc.e20-07-0453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Mutations in two different domains of the ubiquitously expressed TRIM32 protein give rise to two clinically separate diseases, one of which is Limb-girdle muscular dystrophy type 2H (LGMD2H). Uncovering the muscle-specific role of TRIM32 in LGMD2H pathogenesis has proven difficult, as neurogenic phenotypes, independent of LGMD2H pathology, are present in TRIM32 KO mice. We previously established a platform to study LGMD2H pathogenesis using Drosophila melanogaster as a model. Here we show that LGMD2H disease-causing mutations in the NHL domain are molecularly and structurally conserved between fly and human TRIM32. Furthermore, transgenic expression of a subset of myopathic alleles (R394H, D487N, and 520fs) induce myofibril abnormalities, altered nuclear morphology, and reduced TRIM32 protein levels, mimicking phenotypes in patients afflicted with LGMD2H. Intriguingly, we also report for the first time that the protein levels of βPS integrin and sarcoglycan δ, both core components of costameres, are elevated in TRIM32 disease-causing alleles. Similarly, murine myoblasts overexpressing a catalytically inactive TRIM32 mutant aberrantly accumulate α- and β-dystroglycan and α-sarcoglycan. We speculate that the stoichiometric loss of costamere components disrupts costamere complexes to promote muscle degeneration.
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Affiliation(s)
- Simranjot Bawa
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506
| | - Samantha Gameros
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506
| | - Kenny Baumann
- School of Biological Sciences, University of Missouri-Kansas City, MO 64110
| | - David S Brooks
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506
| | - Joseph A Kollhoff
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506
| | - Michal Zolkiewski
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506
| | | | - Nicolò Panini
- Department of Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
| | - Massimo Russo
- Department of Oncology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
| | | | - David K Johnson
- Molecular Graphics and Modeling Laboratory, Computational Chemical Biology Core, University of Kansas, Lawrence, KS 66047
| | | | | | - Scott Lovell
- Protein Structure Laboratory, University of Kansas, Lawrence, KS 66047
| | - Samuel E A Bouyain
- School of Biological Sciences, University of Missouri-Kansas City, MO 64110
| | - Jessica Kawakami
- School of Biological Sciences, University of Missouri-Kansas City, MO 64110
| | - Erika R Geisbrecht
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506.,School of Biological Sciences, University of Missouri-Kansas City, MO 64110
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17
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Vosoughi A, Zhang T, Shohdy KS, Vlachostergios PJ, Wilkes DC, Bhinder B, Tagawa ST, Nanus DM, Molina AM, Beltran H, Sternberg CN, Motanagh S, Robinson BD, Xiang J, Fan X, Chung WK, Rubin MA, Elemento O, Sboner A, Mosquera JM, Faltas BM. Common germline-somatic variant interactions in advanced urothelial cancer. Nat Commun 2020; 11:6195. [PMID: 33273457 PMCID: PMC7713129 DOI: 10.1038/s41467-020-19971-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 11/10/2020] [Indexed: 12/30/2022] Open
Abstract
The prevalence and biological consequences of deleterious germline variants in urothelial cancer (UC) are not fully characterized. We performed whole-exome sequencing (WES) of germline DNA and 157 primary and metastatic tumors from 80 UC patients. We developed a computational framework for identifying putative deleterious germline variants (pDGVs) from WES data. Here, we show that UC patients harbor a high prevalence of pDGVs that truncate tumor suppressor proteins. Deepening somatic loss of heterozygosity in serial tumor samples is observed, suggesting a critical role for these pDGVs in tumor progression. Significant intra-patient heterogeneity in germline-somatic variant interactions results in divergent biological pathway alterations between primary and metastatic tumors. Our results characterize the spectrum of germline variants in UC and highlight their roles in shaping the natural history of the disease. These findings could have broad clinical implications for cancer patients.
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Affiliation(s)
- Aram Vosoughi
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Tuo Zhang
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA
- Genomic Resources Core Facility, Weill Cornell Medicine, New York, NY, USA
| | - Kyrillus S Shohdy
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
- Department of Clinical Oncology, Kasr Alainy School of Medicine, Cairo University, Cairo, Egypt
| | - Panagiotis J Vlachostergios
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - David C Wilkes
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA
| | - Bhavneet Bhinder
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA
- Institute for Computational Biomedicine, Weill Cornell Medicine, New York, New York, NY, USA
| | - Scott T Tagawa
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - David M Nanus
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Ana M Molina
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Himisha Beltran
- Division of Medical Oncology, Dana Farber Cancer Institute, Boston, MA, USA
| | - Cora N Sternberg
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Samaneh Motanagh
- Department of Pathology, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Brian D Robinson
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Jenny Xiang
- Genomic Resources Core Facility, Weill Cornell Medicine, New York, NY, USA
| | - Xiao Fan
- Departments of Pediatrics and Medicine, Columbia University, NY, Columbia, NY, USA
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University, NY, Columbia, NY, USA
| | - Mark A Rubin
- Department for Biomedical Research, University of Bern, Bern, Switzerland
| | - Olivier Elemento
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA
- Institute for Computational Biomedicine, Weill Cornell Medicine, New York, New York, NY, USA
| | - Andrea Sboner
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA
- Institute for Computational Biomedicine, Weill Cornell Medicine, New York, New York, NY, USA
| | - Juan Miguel Mosquera
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA
| | - Bishoy M Faltas
- Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine-New York-Presbyterian Hospital, New York, NY, USA.
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA.
- Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY, USA.
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18
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Loss of Parkin Results in Altered Muscle Stem Cell Differentiation during Regeneration. Int J Mol Sci 2020; 21:ijms21218007. [PMID: 33126429 PMCID: PMC7662548 DOI: 10.3390/ijms21218007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/18/2020] [Accepted: 10/24/2020] [Indexed: 12/20/2022] Open
Abstract
The high capacity of the skeletal muscle to regenerate is due to the presence of muscle stem cells (MuSCs, or satellite cells). The E3 ubiquitin ligase Parkin is a key regulator of mitophagy and is recruited to mitochondria during differentiation of mouse myoblast cell line. However, the function of mitophagy during regeneration has not been investigated in vivo. Here, we have utilized Parkin deficient (Parkin-/-) mice to investigate the role of Parkin in skeletal muscle regeneration. We found a persistent deficiency in skeletal muscle regeneration in Parkin-/- mice after cardiotoxin (CTX) injury with increased area of fibrosis and decreased cross-sectional area (CSA) of myofibres post-injury. There was also a significant modulation of MuSCs differentiation and mitophagic markers, with altered mitochondrial proteins during skeletal muscle regeneration in Parkin-/- mice. Our data suggest that Parkin-mediated mitophagy plays a key role in skeletal muscle regeneration and is necessary for MuSCs differentiation.
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19
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The Ubiquitin Proteasome System in Neuromuscular Disorders: Moving Beyond Movement. Int J Mol Sci 2020; 21:ijms21176429. [PMID: 32899400 PMCID: PMC7503226 DOI: 10.3390/ijms21176429] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/30/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022] Open
Abstract
Neuromuscular disorders (NMDs) affect 1 in 3000 people worldwide. There are more than 150 different types of NMDs, where the common feature is the loss of muscle strength. These disorders are classified according to their neuroanatomical location, as motor neuron diseases, peripheral nerve diseases, neuromuscular junction diseases, and muscle diseases. Over the years, numerous studies have pointed to protein homeostasis as a crucial factor in the development of these fatal diseases. The ubiquitin-proteasome system (UPS) plays a fundamental role in maintaining protein homeostasis, being involved in protein degradation, among other cellular functions. Through a cascade of enzymatic reactions, proteins are ubiquitinated, tagged, and translocated to the proteasome to be degraded. Within the ubiquitin system, we can find three main groups of enzymes: E1 (ubiquitin-activating enzymes), E2 (ubiquitin-conjugating enzymes), and E3 (ubiquitin-protein ligases). Only the ubiquitinated proteins with specific chain linkages (such as K48) will be degraded by the UPS. In this review, we describe the relevance of this system in NMDs, summarizing the UPS proteins that have been involved in pathological conditions and neuromuscular disorders, such as Spinal Muscular Atrophy (SMA), Charcot-Marie-Tooth disease (CMT), or Duchenne Muscular Dystrophy (DMD), among others. A better knowledge of the processes involved in the maintenance of proteostasis may pave the way for future progress in neuromuscular disorder studies and treatments.
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20
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Bawa S, Brooks DS, Neville KE, Tipping M, Sagar MA, Kollhoff JA, Chawla G, Geisbrecht BV, Tennessen JM, Eliceiri KW, Geisbrecht ER. Drosophila TRIM32 cooperates with glycolytic enzymes to promote cell growth. eLife 2020; 9:52358. [PMID: 32223900 PMCID: PMC7105379 DOI: 10.7554/elife.52358] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 03/23/2020] [Indexed: 12/13/2022] Open
Abstract
Cell growth and/or proliferation may require the reprogramming of metabolic pathways, whereby a switch from oxidative to glycolytic metabolism diverts glycolytic intermediates towards anabolic pathways. Herein, we identify a novel role for TRIM32 in the maintenance of glycolytic flux mediated by biochemical interactions with the glycolytic enzymes Aldolase and Phosphoglycerate mutase. Loss of Drosophila TRIM32, encoded by thin (tn), shows reduced levels of glycolytic intermediates and amino acids. This altered metabolic profile correlates with a reduction in the size of glycolytic larval muscle and brain tissue. Consistent with a role for metabolic intermediates in glycolysis-driven biomass production, dietary amino acid supplementation in tn mutants improves muscle mass. Remarkably, TRIM32 is also required for ectopic growth - loss of TRIM32 in a wing disc-associated tumor model reduces glycolytic metabolism and restricts growth. Overall, our results reveal a novel role for TRIM32 for controlling glycolysis in the context of both normal development and tumor growth.
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Affiliation(s)
- Simranjot Bawa
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, United States
| | - David S Brooks
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, United States
| | - Kathryn E Neville
- Department of Biology, Providence College, Providence, United States
| | - Marla Tipping
- Department of Biology, Providence College, Providence, United States
| | - Md Abdul Sagar
- Laboratory for Optical and Computational Instrumentation, Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, United States
| | - Joseph A Kollhoff
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, United States
| | - Geetanjali Chawla
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad, India.,Department of Biology, Indiana University, Bloomington, United States
| | - Brian V Geisbrecht
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, United States
| | - Jason M Tennessen
- Department of Biology, Indiana University, Bloomington, United States
| | - Kevin W Eliceiri
- Laboratory for Optical and Computational Instrumentation, Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, United States
| | - Erika R Geisbrecht
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, United States
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21
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POGLUT1 biallelic mutations cause myopathy with reduced satellite cells, α-dystroglycan hypoglycosylation and a distinctive radiological pattern. Acta Neuropathol 2020; 139:565-582. [PMID: 31897643 DOI: 10.1007/s00401-019-02117-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 01/17/2023]
Abstract
Protein O-glucosyltransferase 1 (POGLUT1) activity is critical for the Notch signaling pathway, being one of the main enzymes responsible for the glycosylation of the extracellular domain of Notch receptors. A biallelic mutation in the POGLUT1 gene has been reported in one family as the cause of an adult-onset limb-girdle muscular dystrophy (LGMD R21; OMIM# 617232). As the result of a collaborative international effort, we have identified the first cohort of 15 patients with LGMD R21, from nine unrelated families coming from different countries, providing a reliable phenotype-genotype and mechanistic insight. Patients carrying novel mutations in POGLUT1 all displayed a clinical picture of limb-girdle muscle weakness. However, the age at onset was broadened from adult to congenital and infantile onset. Moreover, we now report that the unique muscle imaging pattern of "inside-to-outside" fatty degeneration observed in the original cases is indeed a defining feature of POGLUT1 muscular dystrophy. Experiments on muscle biopsies from patients revealed a remarkable and consistent decrease in the level of the NOTCH1 intracellular domain, reduction of the pool of satellite cells (SC), and evidence of α-dystroglycan hypoglycosylation. In vitro biochemical and cell-based assays suggested a pathogenic role of the novel POGLUT1 mutations, leading to reduced enzymatic activity and/or protein stability. The association between the POGLUT1 variants and the muscular phenotype was established by in vivo experiments analyzing the indirect flight muscle development in transgenic Drosophila, showing that the human POGLUT1 mutations reduced its myogenic activity. In line with the well-known role of the Notch pathway in the homeostasis of SC and muscle regeneration, SC-derived myoblasts from patients' muscle samples showed decreased proliferation and facilitated differentiation. Together, these observations suggest that alterations in SC biology caused by reduced Notch1 signaling result in muscular dystrophy in LGMD R21 patients, likely with additional contribution from α-dystroglycan hypoglycosylation. This study settles the muscular clinical phenotype linked to POGLUT1 mutations and establishes the pathogenic mechanism underlying this muscle disorder. The description of a specific imaging pattern of fatty degeneration and muscle pathology with a decrease of α-dystroglycan glycosylation provides excellent tools which will help diagnose and follow up LGMD R21 patients.
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22
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Overå KS, Garcia-Garcia J, Bhujabal Z, Jain A, Øvervatn A, Larsen KB, Deretic V, Johansen T, Lamark T, Sjøttem E. TRIM32, but not its muscular dystrophy-associated mutant, positively regulates and is targeted to autophagic degradation by p62/SQSTM1. J Cell Sci 2019; 132:jcs.236596. [PMID: 31685529 DOI: 10.1242/jcs.236596] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 10/28/2019] [Indexed: 12/16/2022] Open
Abstract
The tripartite motif (TRIM) proteins constitute a family of ubiquitin E3 ligases involved in a multitude of cellular processes, including protein homeostasis and autophagy. TRIM32 is characterized by six protein-protein interaction domains termed NHL, various point mutations in which are associated with limb-girdle-muscular dystrophy 2H (LGMD2H). Here, we show that TRIM32 is an autophagy substrate. Lysosomal degradation of TRIM32 was dependent on ATG7 and blocked by knockout of the five autophagy receptors p62 (also known as SQSTM1), NBR1, NDP52 (also known as CALCOCO2), TAX1BP1 and OPTN, pointing towards degradation by selective autophagy. p62 directed TRIM32 to lysosomal degradation, while TRIM32 mono-ubiquitylated p62 on lysine residues involved in regulation of p62 activity. Loss of TRIM32 impaired p62 sequestration, while reintroduction of TRIM32 facilitated p62 dot formation and its autophagic degradation. A TRIM32LGMD2H disease mutant was unable to undergo autophagic degradation and to mono-ubiquitylate p62, and its reintroduction into the TRIM32-knockout cells did not affect p62 dot formation. In light of the important roles of autophagy and p62 in muscle cell proteostasis, our results point towards impaired TRIM32-mediated regulation of p62 activity as a pathological mechanisms in LGMD2H.
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Affiliation(s)
- Katrine Stange Overå
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Juncal Garcia-Garcia
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Zambarlal Bhujabal
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Ashish Jain
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Aud Øvervatn
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Kenneth Bowitz Larsen
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Vojo Deretic
- Autophagy Inflammation and Metabolism Center of Biomedical Research Excellence, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.,Department of Molecular Genetics and Microbiology, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
| | - Terje Johansen
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Trond Lamark
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
| | - Eva Sjøttem
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø -The Arctic University of Norway, 9037 Tromsø, Norway
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