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Paumier JM, Gowrishankar S. Disruptions in axonal lysosome transport and its contribution to neurological disease. Curr Opin Cell Biol 2024; 89:102382. [PMID: 38905918 DOI: 10.1016/j.ceb.2024.102382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/23/2024]
Abstract
Lysosomes are central to the maintenance of protein and organelle homeostasis in cells. Optimal lysosome function is particularly critical for neurons which are long-lived, non-dividing and highly polarized with specialized compartments such as axons and dendrites with distinct architecture, cargo, and turnover requirements. In recent years, there has been a growing appreciation for the role played by axonal lysosome transport in regulating neuronal development, its maintenance and functioning. Perturbations to optimal axonal lysosome abundance leading to either strong accumulations or dearth of lysosomes are both linked to altered neuronal health and functioning. In this review we highlight how two critical regulators of axonal lysosome transport and abundance, the small GTPase Arl8 and the adaptor protein JIP3, aid in maintaining axonal lysosome homeostasis and how alterations to their levels and activity could contribute to neurodevelopmental and neurodegenerative diseases.
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Affiliation(s)
- Jean-Michel Paumier
- Department of Anatomy and Cell Biology, University of Illinois Chicago, 808 S Wood St, Chicago, IL 60612, USA
| | - Swetha Gowrishankar
- Department of Anatomy and Cell Biology, University of Illinois Chicago, 808 S Wood St, Chicago, IL 60612, USA.
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2
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Suzuki R, Kanemaki MT, Suzuki T, Yoshioka K. Overexpression of JNK-associated leucine zipper protein induces chromosomal instability through interaction with dynein light intermediate chain 1. Genes Cells 2024; 29:39-51. [PMID: 37963657 DOI: 10.1111/gtc.13083] [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: 09/26/2023] [Revised: 10/26/2023] [Accepted: 11/05/2023] [Indexed: 11/16/2023]
Abstract
The c-Jun N-terminal kinase-associated leucine zipper protein (JLP), a scaffold protein of mitogen-activated protein kinase signaling pathways, is a multifunctional protein involved in a variety of cellular processes. It has been reported that JLP is overexpressed in various types of cancer and is expected to be a potential therapeutic target. However, whether and how JLP overexpression affects non-transformed cells remain unknown. Here, we aimed to investigate the effect of JLP overexpression on chromosomal stability in human non-transformed cells and the mechanisms involved. We found that aneuploidy was induced in JLP-overexpressed cells. Moreover, we established JLP-inducible cell lines and observed an increased frequency of chromosome missegregation, reduced time from nuclear envelope breakdown to anaphase onset, and decreased levels of the spindle assembly checkpoint (SAC) components at the prometaphase kinetochore in cells overexpressing the wild-type JLP. In contrast, we observed that a point mutant JLP lacking the ability to interact with dynein light intermediate chain 1 (DLIC1) failed to induce chromosomal instability. Our results suggest that overexpression of the wild-type JLP facilitates premature SAC silencing through interaction with DLIC1, leading to aneuploidy. This study provides a novel insight into the mechanism through which JLP overexpression is associated with cancer development and progression.
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Affiliation(s)
- Ryusuke Suzuki
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
- Division of Functional Genomics, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Masato T Kanemaki
- Department of Chromosome Science, National Institute of Genetics, Research Organization of Information and Systems (ROIS), Mishima, Shizuoka, Japan
- Graduate Institute for Advanced Studies, SOKENDAI, Mishima, Shizuoka, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Takeshi Suzuki
- Division of Functional Genomics, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Katsuji Yoshioka
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
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3
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Cason SE, Holzbaur EL. Axonal transport of autophagosomes is regulated by dynein activators JIP3/JIP4 and ARF/RAB GTPases. J Cell Biol 2023; 222:e202301084. [PMID: 37909920 PMCID: PMC10620608 DOI: 10.1083/jcb.202301084] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 08/28/2023] [Accepted: 10/05/2023] [Indexed: 11/03/2023] Open
Abstract
Neuronal autophagosomes form and engulf cargos at presynaptic sites in the axon and are then transported to the soma to recycle their cargo. Autophagic vacuoles (AVs) mature en route via fusion with lysosomes to become degradatively competent organelles; transport is driven by the microtubule motor protein cytoplasmic dynein, with motor activity regulated by a sequential series of adaptors. Using lysate-based single-molecule motility assays and live-cell imaging in primary neurons, we show that JNK-interacting proteins 3 (JIP3) and 4 (JIP4) are activating adaptors for dynein that are regulated on autophagosomes and lysosomes by the small GTPases ARF6 and RAB10. GTP-bound ARF6 promotes formation of the JIP3/4-dynein-dynactin complex. Either knockdown or overexpression of RAB10 stalls transport, suggesting that this GTPase is also required to coordinate the opposing activities of bound dynein and kinesin motors. These findings highlight the complex coordination of motor regulation during organelle transport in neurons.
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Affiliation(s)
- Sydney E. Cason
- Department of Physiology, University of Pennsylvania, Philadelphia, PA, USA
- Neuroscience Graduate Group, University of Pennsylvania, Philadelphia, PA, USA
- Pennsylvania Muscle Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Erika L.F. Holzbaur
- Department of Physiology, University of Pennsylvania, Philadelphia, PA, USA
- Neuroscience Graduate Group, University of Pennsylvania, Philadelphia, PA, USA
- Pennsylvania Muscle Institute, University of Pennsylvania, Philadelphia, PA, USA
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4
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Barros LF, Ruminot I, Sandoval PY, San Martín A. Enlightening brain energy metabolism. Neurobiol Dis 2023:106211. [PMID: 37352985 DOI: 10.1016/j.nbd.2023.106211] [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: 03/06/2023] [Revised: 05/06/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023] Open
Abstract
Brain tissue metabolism is distributed across several cell types and subcellular compartments, which activate at different times and with different temporal patterns. The introduction of genetically-encoded fluorescent indicators that are imaged using time-lapse microscopy has opened the possibility of studying brain metabolism at cellular and sub-cellular levels. There are indicators for sugars, monocarboxylates, Krebs cycle intermediates, amino acids, cofactors, and energy nucleotides, which inform about relative levels, concentrations and fluxes. This review offers a brief survey of the metabolic indicators that have been validated in brain cells, with some illustrative examples from the literature. Whereas only a small fraction of the metabolome is currently accessible to fluorescent probes, there are grounds to be optimistic about coming developments and the application of these tools to the study of brain disease.
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Affiliation(s)
- L F Barros
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Facultad de Medicina y Ciencia, Universidad San Sebastián, Valdivia, Chile.
| | - I Ruminot
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Facultad de Ciencias para el Cuidado de La Salud, Universidad San Sebastián, Valdivia, Chile
| | - P Y Sandoval
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Facultad de Ciencias para el Cuidado de La Salud, Universidad San Sebastián, Valdivia, Chile
| | - A San Martín
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Facultad de Ciencias para el Cuidado de La Salud, Universidad San Sebastián, Valdivia, Chile
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5
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Cason SE, Holzbaur EL. Axonal transport of autophagosomes is regulated by dynein activators JIP3/JIP4 and ARF/RAB GTPases. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.28.526044. [PMID: 36747648 PMCID: PMC9901177 DOI: 10.1101/2023.01.28.526044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Neuronal autophagosomes, "self-eating" degradative organelles, form at presynaptic sites in the distal axon and are transported to the soma to recycle their cargo. During transit, autophagic vacuoles (AVs) mature through fusion with lysosomes to acquire the enzymes necessary to breakdown their cargo. AV transport is driven primarily by the microtubule motor cytoplasmic dynein in concert with dynactin and a series of activating adaptors that change depending on organelle maturation state. The transport of mature AVs is regulated by the scaffolding proteins JIP3 and JIP4, both of which activate dynein motility in vitro. AV transport is also regulated by ARF6 in a GTP-dependent fashion. While GTP-bound ARF6 promotes the formation of the JIP3/4-dynein-dynactin complex, RAB10 competes with the activity of this complex by increasing kinesin recruitment to axonal AVs and lysosomes. These interactions highlight the complex coordination of motors regulating organelle transport in neurons.
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Affiliation(s)
- Sydney E. Cason
- Department of Physiology, University of Pennsylvania
- Neuroscience Graduate Group, University of Pennsylvania
- Pennsylvania Muscle Institute, University of Pennsylvania
| | - Erika L.F. Holzbaur
- Department of Physiology, University of Pennsylvania
- Neuroscience Graduate Group, University of Pennsylvania
- Pennsylvania Muscle Institute, University of Pennsylvania
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6
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Celestino R, Gama JB, Castro-Rodrigues AF, Barbosa DJ, Rocha H, d’Amico EA, Musacchio A, Carvalho AX, Morais-Cabral JH, Gassmann R. JIP3 interacts with dynein and kinesin-1 to regulate bidirectional organelle transport. J Cell Biol 2022; 221:213353. [PMID: 35829703 PMCID: PMC9284427 DOI: 10.1083/jcb.202110057] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 06/04/2022] [Accepted: 06/23/2022] [Indexed: 01/16/2023] Open
Abstract
The MAP kinase and motor scaffold JIP3 prevents excess lysosome accumulation in axons of vertebrates and invertebrates. How JIP3's interaction with dynein and kinesin-1 contributes to organelle clearance is unclear. We show that human dynein light intermediate chain (DLIC) binds the N-terminal RH1 domain of JIP3, its paralog JIP4, and the lysosomal adaptor RILP. A point mutation in RH1 abrogates DLIC binding without perturbing the interaction between JIP3's RH1 domain and kinesin heavy chain. Characterization of this separation-of-function mutation in Caenorhabditis elegans shows that JIP3-bound dynein is required for organelle clearance in the anterior process of touch receptor neurons. Unlike JIP3 null mutants, JIP3 that cannot bind DLIC causes prominent accumulation of endo-lysosomal organelles at the neurite tip, which is rescued by a disease-associated point mutation in JIP3's leucine zipper that abrogates kinesin light chain binding. These results highlight that RH1 domains are interaction hubs for cytoskeletal motors and suggest that JIP3-bound dynein and kinesin-1 participate in bidirectional organelle transport.
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Affiliation(s)
- Ricardo Celestino
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal
| | - José B. Gama
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal
| | | | - Daniel J. Barbosa
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal,TOXRUN—Toxicology Research Unit, University Institute of Health Sciences, Advanced Polytechnic and University Cooperative (CESPU), Cooperative of Limited Liability (CRL), Gandra, Portugal
| | - Helder Rocha
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal
| | - Ennio A. d’Amico
- Department of Mechanistic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Andrea Musacchio
- Department of Mechanistic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany,Centre for Medical Biotechnology, Faculty of Biology, University Duisburg-Essen, Essen, Germany
| | - Ana Xavier Carvalho
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal
| | - João H. Morais-Cabral
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal
| | - Reto Gassmann
- Instituto de Investigação e Inovação em Saúde—i3S, Universidade do Porto, Porto, Portugal,Correspondence to Reto Gassmann:
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San Martín A, Arce-Molina R, Aburto C, Baeza-Lehnert F, Barros LF, Contreras-Baeza Y, Pinilla A, Ruminot I, Rauseo D, Sandoval PY. Visualizing physiological parameters in cells and tissues using genetically encoded indicators for metabolites. Free Radic Biol Med 2022; 182:34-58. [PMID: 35183660 DOI: 10.1016/j.freeradbiomed.2022.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 02/07/2023]
Abstract
The study of metabolism is undergoing a renaissance. Since the year 2002, over 50 genetically-encoded fluorescent indicators (GEFIs) have been introduced, capable of monitoring metabolites with high spatial/temporal resolution using fluorescence microscopy. Indicators are fusion proteins that change their fluorescence upon binding a specific metabolite. There are indicators for sugars, monocarboxylates, Krebs cycle intermediates, amino acids, cofactors, and energy nucleotides. They permit monitoring relative levels, concentrations, and fluxes in living systems. At a minimum they report relative levels and, in some cases, absolute concentrations may be obtained by performing ad hoc calibration protocols. Proper data collection, processing, and interpretation are critical to take full advantage of these new tools. This review offers a survey of the metabolic indicators that have been validated in mammalian systems. Minimally invasive, these indicators have been instrumental for the purposes of confirmation, rebuttal and discovery. We envision that this powerful technology will foster metabolic physiology.
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Affiliation(s)
- A San Martín
- Centro de Estudios Científicos (CECs), Valdivia, Chile.
| | - R Arce-Molina
- Centro de Estudios Científicos (CECs), Valdivia, Chile
| | - C Aburto
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Universidad Austral de Chile, Valdivia, Chile
| | | | - L F Barros
- Centro de Estudios Científicos (CECs), Valdivia, Chile
| | - Y Contreras-Baeza
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Universidad Austral de Chile, Valdivia, Chile
| | - A Pinilla
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Universidad Austral de Chile, Valdivia, Chile
| | - I Ruminot
- Centro de Estudios Científicos (CECs), Valdivia, Chile
| | - D Rauseo
- Centro de Estudios Científicos (CECs), Valdivia, Chile; Universidad Austral de Chile, Valdivia, Chile
| | - P Y Sandoval
- Centro de Estudios Científicos (CECs), Valdivia, Chile
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8
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JIP3 links lysosome transport to regulation of multiple components of the axonal cytoskeleton. Commun Biol 2022; 5:5. [PMID: 35013510 PMCID: PMC8748971 DOI: 10.1038/s42003-021-02945-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 12/02/2021] [Indexed: 12/11/2022] Open
Abstract
Lysosome axonal transport is important for the clearance of cargoes sequestered by the endocytic and autophagic pathways. Building on observations that mutations in the JIP3 (MAPK8IP3) gene result in lysosome-filled axonal swellings, we analyzed the impact of JIP3 depletion on the cytoskeleton of human neurons. Dynamic focal lysosome accumulations were accompanied by disruption of the axonal periodic scaffold (spectrin, F-actin and myosin II) throughout each affected axon. Additionally, axonal microtubule organization was locally disrupted at each lysosome-filled swelling. This local axonal microtubule disorganization was accompanied by accumulations of both F-actin and myosin II. These results indicate that transport of axonal lysosomes is functionally interconnected with mechanisms that control the organization and maintenance of the axonal cytoskeleton. They have potential relevance to human neurological disease arising from JIP3 mutations as well as for neurodegenerative diseases associated with the focal accumulations of lysosomes within axonal swellings such as Alzheimer’s disease. Rafiq et al. report that disruption of JIP3-dependent control of axonal lysosome transport in human neurons results in unexpected changes to the organization of multiple cytoskeletal proteins. This study provides new insights that improve our understanding of intellectual disabilities caused by mutations in JIP3, and are relevant for neurodegenerative diseases associated with accumulations of lysosomes such as the Alzheimer’s disease
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Pathophysiology of neurodegenerative diseases: An interplay among axonal transport failure, oxidative stress, and inflammation? Semin Immunol 2022; 59:101628. [PMID: 35779975 PMCID: PMC9807734 DOI: 10.1016/j.smim.2022.101628] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/09/2022] [Accepted: 06/13/2022] [Indexed: 01/15/2023]
Abstract
Neurodegenerative diseases (NDs) are heterogeneous neurological disorders characterized by a progressive loss of selected neuronal populations. A significant risk factor for most NDs is aging. Considering the constant increase in life expectancy, NDs represent a global public health burden. Axonal transport (AT) is a central cellular process underlying the generation and maintenance of neuronal architecture and connectivity. Deficits in AT appear to be a common thread for most, if not all, NDs. Neuroinflammation has been notoriously difficult to define in relation to NDs. Inflammation is a complex multifactorial process in the CNS, which varies depending on the disease stage. Several lines of evidence suggest that AT defect, axonopathy and neuroinflammation are tightly interlaced. However, whether these impairments play a causative role in NDs or are merely a downstream effect of neuronal degeneration remains unsettled. We still lack reliable information on the temporal relationship between these pathogenic mechanisms, although several findings suggest that they may occur early during ND pathophysiology. This article will review the latest evidence emerging on whether the interplay between AT perturbations and some aspects of CNS inflammation can participate in ND etiology, analyze their potential as therapeutic targets, and the urge to identify early surrogate biomarkers.
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10
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Benoit B, Baillet A, Poüs C. Cytoskeleton and Associated Proteins: Pleiotropic JNK Substrates and Regulators. Int J Mol Sci 2021; 22:8375. [PMID: 34445080 PMCID: PMC8395060 DOI: 10.3390/ijms22168375] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 12/12/2022] Open
Abstract
This review extensively reports data from the literature concerning the complex relationships between the stress-induced c-Jun N-terminal kinases (JNKs) and the four main cytoskeleton elements, which are actin filaments, microtubules, intermediate filaments, and septins. To a lesser extent, we also focused on the two membrane-associated cytoskeletons spectrin and ESCRT-III. We gather the mechanisms controlling cytoskeleton-associated JNK activation and the known cytoskeleton-related substrates directly phosphorylated by JNK. We also point out specific locations of the JNK upstream regulators at cytoskeletal components. We finally compile available techniques and tools that could allow a better characterization of the interplay between the different types of cytoskeleton filaments upon JNK-mediated stress and during development. This overview may bring new important information for applied medical research.
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Affiliation(s)
- Béatrice Benoit
- Université Paris-Saclay, INSERM UMR-S-1193, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France; (A.B.); (C.P.)
| | - Anita Baillet
- Université Paris-Saclay, INSERM UMR-S-1193, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France; (A.B.); (C.P.)
| | - Christian Poüs
- Université Paris-Saclay, INSERM UMR-S-1193, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry, France; (A.B.); (C.P.)
- Biochimie-Hormonologie, AP-HP Université Paris-Saclay, Site Antoine Béclère, 157 Rue de la Porte de Trivaux, 92141 Clamart, France
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11
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Tan KW, Nähse V, Campsteijn C, Brech A, Schink KO, Stenmark H. JIP4 is recruited by the phosphoinositide-binding protein Phafin2 to promote recycling tubules on macropinosomes. J Cell Sci 2021; 134:jcs258495. [PMID: 34109410 PMCID: PMC8325962 DOI: 10.1242/jcs.258495] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/27/2021] [Indexed: 12/28/2022] Open
Abstract
Macropinocytosis allows cells to take up extracellular material in a non-selective manner into large vesicles called macropinosomes. After internalization, macropinosomes acquire phosphatidylinositol 3-phosphate (PtdIns3P) on their limiting membrane as they mature into endosomal-like vesicles. The molecular mechanisms that underlie recycling of membranes and transmembrane proteins from these macropinosomes still need to be defined. Here, we report that JIP4 (officially known as SPAG9), a protein previously described to bind to microtubule motors, is recruited to tubulating subdomains on macropinosomes by the PtdIns3P-binding protein Phafin2 (officially known as PLEKHF2). These JIP4-positive tubulating subdomains on macropinosomes contain F-actin, the retromer recycling complex and the retromer cargo VAMP3. Disruption of the JIP4-Phafin2 interaction, deletion of Phafin2 or inhibition of PtdIns3P production by VPS34 impairs JIP4 recruitment to macropinosomes. Whereas knockout of JIP4 suppresses tubulation, its overexpression enhances tubulation from macropinosomes. JIP4-knockout cells display increased retention of macropinocytic cargo in both early and late macropinosomes. Collectively, these data identify JIP4 and Phafin2 as components of a tubular recycling pathway that operates from macropinosomes. This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Kia Wee Tan
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello N-0379 Oslo, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello 0379 Oslo, Norway
| | - Viola Nähse
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello N-0379 Oslo, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello 0379 Oslo, Norway
| | - Coen Campsteijn
- Department of Molecular Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, 0372 Oslo, Norway
| | - Andreas Brech
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello N-0379 Oslo, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello 0379 Oslo, Norway
| | - Kay Oliver Schink
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello N-0379 Oslo, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello 0379 Oslo, Norway
| | - Harald Stenmark
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello N-0379 Oslo, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello 0379 Oslo, Norway
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Fu X, An Y, Wang H, Li P, Lin J, Yuan J, Yue R, Jin Y, Gao J, Chai R. Deficiency of Klc2 Induces Low-Frequency Sensorineural Hearing Loss in C57BL/6 J Mice and Human. Mol Neurobiol 2021; 58:4376-4391. [PMID: 34014435 DOI: 10.1007/s12035-021-02422-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/05/2021] [Indexed: 12/19/2022]
Abstract
The transport system in cochlear hair cells (HCs) is important for their function, and the kinesin family of proteins transports numerous cellular cargos via the microtubule network in the cytoplasm. Here, we found that Klc2 (kinesin light chain 2), the light chain of kinesin-1 that mediates cargo binding and regulates kinesin-1 motility, is essential for cochlear function. We generated mice lacking Klc2, and they suffered from low-frequency hearing loss as early as 1 month of age. We demonstrated that deficiency of Klc2 resulted in abnormal transport of mitochondria and the down-regulation of the GABAA receptor family. In addition, whole-genome sequencing (WGS) of patient showed that KLC2 was related to low-frequency hearing in human. Hence, to explore therapeutic approaches, we developed adeno-associated virus containing the Klc2 wide-type cDNA sequence, and Klc2-null mice delivered virus showed apparent recovery, including decreased ABR threshold and reduced out hair cell (OHC) loss. In summary, we show that the kinesin transport system plays an indispensable and special role in cochlear HC function in mice and human and that mitochondrial localization is essential for HC survival.
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Affiliation(s)
- Xiaolong Fu
- State Key Laboratory of Bioelectronics, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China.,College of Laboratory Animal & Shandong Laboratory Animal Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Yachun An
- School of Life Science, Shandong University, Qingdao, China
| | - Hongyang Wang
- College of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, China
| | - Peipei Li
- School of Life Science, Shandong University, Qingdao, China
| | - Jing Lin
- Waksman Institute, the State University of New Jersey, RutgersNew Brunswick, NJ, USA
| | - Jia Yuan
- State Key Laboratory of Bioelectronics, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
| | - Rongyu Yue
- Department of Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated To Shandong University, Jinan, China
| | - Yecheng Jin
- School of Life Science, Shandong University, Qingdao, China
| | - Jiangang Gao
- College of Laboratory Animal & Shandong Laboratory Animal Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.
| | - Renjie Chai
- State Key Laboratory of Bioelectronics, School of Life Sciences and Technology, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China. .,College of Laboratory Animal & Shandong Laboratory Animal Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China. .,Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China. .,Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China.
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13
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Gunarta IK, Yuliana D, Erdenebaatar P, Kishi Y, Boldbaatar J, Suzuki R, Odongoo R, Davaakhuu G, Hohjoh H, Yoshioka K. c-Jun NH 2-terminal kinase (JNK)/stress-activated protein kinase-associated protein 1 (JSAP1) attenuates curcumin-induced cell death differently from its family member, JNK-associated leucine zipper protein (JLP). Drug Discov Ther 2021; 15:66-72. [PMID: 33716240 DOI: 10.5582/ddt.2021.01021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Curcumin, a major component of turmeric, is known to exhibit multiple biological functions including antitumor activity. We previously reported that the mitogen-activated protein kinase (MAPK) scaffold protein c-Jun NH2-terminal kinase (JNK)-associated leucine zipper protein (JLP) reduces curcumin-induced cell death by modulating p38 MAPK and autophagy through the regulation of lysosome positioning. In this study, we investigated the role of JNK/stress-activated protein kinase-associated protein 1 (JSAP1), a JLP family member, in curcumin-induced stress, and found that JSAP1 also attenuates curcumin-induced cell death. However, JSAP1 knockout showed no or little effect on the activation of JNK and p38 MAPKs in response to curcumin. In addition, small molecule inhibitors of JNK and p38 MAPKs did not increase curcumin-induced cell death. Furthermore, JSAP1 depletion did not impair lysosome positioning and autophagosome-lysosome fusion. Instead, we noticed substantial autolysosome accumulation accompanied by an inefficient autophagic flux in JSAP1 knockout cells. Taken together, these results indicate that JSAP1 is involved in curcumin-induced cell death differently from JLP, and may suggest that JSAP1 plays a role in autophagosome degradation and its dysfunction results in enhanced cell death. The findings of this study may contribute to the development of novel therapeutic approaches using curcumin for cancer.
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Affiliation(s)
- I Ketut Gunarta
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Dewi Yuliana
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Purev Erdenebaatar
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Yuhei Kishi
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Jambaldorj Boldbaatar
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.,Present address: School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
| | - Ryusuke Suzuki
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Ravdandorj Odongoo
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Gantulga Davaakhuu
- Laboratory of Molecular Biology, Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - Hirohiko Hohjoh
- Department of Molecular Pharmacology, National Institute of Neuroscience, NCNP, Kodaira, Tokyo, Japan
| | - Katsuji Yoshioka
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
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14
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Gowrishankar S, Lyons L, Rafiq NM, Roczniak-Ferguson A, De Camilli P, Ferguson SM. Overlapping roles of JIP3 and JIP4 in promoting axonal transport of lysosomes in human iPSC-derived neurons. Mol Biol Cell 2021; 32:1094-1103. [PMID: 33788575 PMCID: PMC8351540 DOI: 10.1091/mbc.e20-06-0382] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The dependence of neurons on microtubule-based motors for the movement of lysosomes over long distances raises questions about adaptations that allow neurons to meet these demands. Recently, JIP3/MAPK8IP3, a neuronally enriched putative adaptor between lysosomes and motors, was identified as a critical regulator of axonal lysosome abundance. In this study, we establish a human induced pluripotent stem cell (iPSC)-derived neuron model for the investigation of axonal lysosome transport and maturation and show that loss of JIP3 results in the accumulation of axonal lysosomes and the Alzheimer’s disease–related amyloid precursor protein (APP)-derived Aβ42 peptide. We furthermore reveal an overlapping role of the homologous JIP4 gene in lysosome axonal transport. These results establish a cellular model for investigating the relationship between lysosome axonal transport and amyloidogenic APP processing and more broadly demonstrate the utility of human iPSC–derived neurons for the investigation of neuronal cell biology and pathology.
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Affiliation(s)
- Swetha Gowrishankar
- Departments of Cell Biology and.,Neuroscience.,Program in Cellular Neuroscience, Neurodegeneration and Repair.,Howard Hughes Medical Institute, and
| | - Lila Lyons
- Departments of Cell Biology and.,Neuroscience.,Program in Cellular Neuroscience, Neurodegeneration and Repair.,Howard Hughes Medical Institute, and
| | - Nisha Mohd Rafiq
- Departments of Cell Biology and.,Neuroscience.,Program in Cellular Neuroscience, Neurodegeneration and Repair.,Howard Hughes Medical Institute, and
| | - Agnes Roczniak-Ferguson
- Departments of Cell Biology and.,Neuroscience.,Program in Cellular Neuroscience, Neurodegeneration and Repair
| | - Pietro De Camilli
- Departments of Cell Biology and.,Neuroscience.,Program in Cellular Neuroscience, Neurodegeneration and Repair.,Howard Hughes Medical Institute, and.,Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT 06510
| | - Shawn M Ferguson
- Departments of Cell Biology and.,Neuroscience.,Program in Cellular Neuroscience, Neurodegeneration and Repair
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15
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Marmolejo-Martínez-Artesero S, Casas C, Romeo-Guitart D. Endogenous Mechanisms of Neuroprotection: To Boost or Not to Boost. Cells 2021; 10:cells10020370. [PMID: 33578870 PMCID: PMC7916582 DOI: 10.3390/cells10020370] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 12/11/2022] Open
Abstract
Postmitotic cells, like neurons, must live through a lifetime. For this reason, organisms/cells have evolved with self-repair mechanisms that allow them to have a long life. The discovery workflow of neuroprotectors during the last years has focused on blocking the pathophysiological mechanisms that lead to neuronal loss in neurodegeneration. Unfortunately, only a few strategies from these studies were able to slow down or prevent neurodegeneration. There is compelling evidence demonstrating that endorsing the self-healing mechanisms that organisms/cells endogenously have, commonly referred to as cellular resilience, can arm neurons and promote their self-healing. Although enhancing these mechanisms has not yet received sufficient attention, these pathways open up new therapeutic avenues to prevent neuronal death and ameliorate neurodegeneration. Here, we highlight the main endogenous mechanisms of protection and describe their role in promoting neuron survival during neurodegeneration.
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Affiliation(s)
- Sara Marmolejo-Martínez-Artesero
- Department of Cell Biology, Physiology and Immunology, Institut de Neurociències (INc), Universitat Autònoma de Barcelona (UAB), Bellaterra, 08193 Barcelona, Spain;
| | - Caty Casas
- Department of Cell Biology, Physiology and Immunology, Institut de Neurociències (INc), Universitat Autònoma de Barcelona (UAB), Bellaterra, 08193 Barcelona, Spain;
| | - David Romeo-Guitart
- Department of Cell Biology, Physiology and Immunology, Institut de Neurociències (INc), Universitat Autònoma de Barcelona (UAB), Bellaterra, 08193 Barcelona, Spain;
- Laboratory “Hormonal Regulation of Brain Development and Functions”—Team 8, Institut Necker Enfants-Malades (INEM), INSERM U1151, Université Paris Descartes, Sorbonne Paris Cité, 75015 Paris, France
- Correspondence: ; Tel.: +33-01-40-61-53-57
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16
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Yan Q, Zhu K, Zhang L, Fu Q, Chen Z, Liu S, Fu D, Nakazato R, Yoshioka K, Diao B, Ding G, Li X, Wang H. A negative feedback loop between JNK-associated leucine zipper protein and TGF-β1 regulates kidney fibrosis. Commun Biol 2020; 3:288. [PMID: 32504044 PMCID: PMC7275040 DOI: 10.1038/s42003-020-1008-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 05/17/2020] [Indexed: 12/26/2022] Open
Abstract
Renal fibrosis is controlled by profibrotic and antifibrotic forces. Exploring anti-fibrosis factors and mechanisms is an attractive strategy to prevent organ failure. Here we identified the JNK-associated leucine zipper protein (JLP) as a potential endogenous antifibrotic factor. JLP, predominantly expressed in renal tubular epithelial cells (TECs) in normal human or mouse kidneys, was downregulated in fibrotic kidneys. Jlp deficiency resulted in more severe renal fibrosis in unilateral ureteral obstruction (UUO) mice, while renal fibrosis resistance was observed in TECs-specific transgenic Jlp mice. JLP executes its protective role in renal fibrosis via negatively regulating TGF-β1 expression and autophagy, and the profibrotic effects of ECM production, epithelial-to-mesenchymal transition (EMT), apoptosis and cell cycle arrest in TECs. We further found that TGF-β1 and FGF-2 could negatively regulate the expression of JLP. Our study suggests that JLP plays a central role in renal fibrosis via its negative crosstalk with the profibrotic factor, TGF-β1. Qi Yan et al. find that JNK-associated leucine zipper protein (Jlp) counteracts the profibrotic effects of TGF-β1 and autophagy on renal tubular epithelial cells and that TGF-β1 and FGF-2 can negatively regulate the expression of Jlp. These findings provide insights into the role of Jlp in kidney fibrosis.
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Affiliation(s)
- Qi Yan
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China.,Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhu
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lu Zhang
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China.,Department of Internal Medicine, and Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Qiang Fu
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhaowei Chen
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shan Liu
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Dou Fu
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ryota Nakazato
- Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Katsuji Yoshioka
- Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Bo Diao
- Department of Medical Laboratory Center, General Hospital of Central Theater Command, Wuhan, China
| | - Guohua Ding
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaogang Li
- Department of Internal Medicine, and Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Huiming Wang
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China.
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17
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Guo H, Lei H, Zhang BG, Xu ZC, Dong C, Hao YQ. c-Jun NH2-terminal kinase (JNK)/stress-activated protein kinase-associated protein 1 is a critical regulator for arthritis progression by meditating inflammation in mice model. Int Immunopharmacol 2020; 81:106272. [PMID: 32062074 DOI: 10.1016/j.intimp.2020.106272] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/27/2020] [Accepted: 01/30/2020] [Indexed: 01/14/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease. However, the pathogenesis of RA is not fully understood. Here, we reported that c-Jun NH2-terminal kinase (JNK)/stress-activated protein kinase-associated protein 1 (JSAP1, also known as JNK-interacting protein 3 (JIP3)) was significantly important for collagen-induced arthritis (CIA) in mice. Mice with JIP3 knockout (JIP3-/-) showed a significant decrease in arthritis index and swollen joint count in CIA mice. The histopathology of spleen and joint was markedly alleviated by JIP3 deficiency in CIA mice. Excessive macrophage activation in CIA mice was also inhibited by JIP3 deletion. CIA-induced RANKL/RANK/OPG system mRNA expression was blocked in JIP3-knockout mice. In addition, CIA-triggered cytokine secretion and TLRs/NF-κB activation was inactivated by JIP3-deficiency. In line with the inhibition of inflammation by JIP3-knockout, it also significantly suppressed JNK pathway activation induced by CIA, as evidenced by the down-regulation of p-JNK, p-c-Jun, AFT-2 and Elk-1 in joints. In vitro, RANKL-exposed RAW264.7 cells showed a significant reduction of osteoclast formation using TRAP staining. Moreover, JIP3 inhibition reduced the RANKL-caused expression of osteoclastic genes and inflammatory regulators, as well as activation of TLRs/NF-κB and JNK signaling pathways. Importantly, we found that promoting JNK activity could abrogate JIP3 knockdown-suppressed osteoclastic genes expression, inflammatory response and NF-κB activation. These findings suggested that JIP3 could significantly impede osteoclast formation and function by regulating JNK activation, illustrating a novel therapeutic strategy for managing arthritis and preventing bone destruction.
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Affiliation(s)
- Hao Guo
- Department of Osteonecrosis and Joint Reconstruction, Honghui Hospital of Xi'an Jiaotong University Health Science Center, Xi'an 710068, China
| | - Hong Lei
- Department of Orthopedics, Shangluo Traditional Chinese Medicine Hospital, Shangluo, Shaanxi 726000, China
| | - Bao-Gang Zhang
- Department of Osteonecrosis and Joint Reconstruction, Honghui Hospital of Xi'an Jiaotong University Health Science Center, Xi'an 710068, China
| | - Zhao-Chen Xu
- Department of Osteonecrosis and Joint Reconstruction, Honghui Hospital of Xi'an Jiaotong University Health Science Center, Xi'an 710068, China
| | - Chen Dong
- Department of Orthopedics, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712046, China
| | - Yang-Quan Hao
- Department of Osteonecrosis and Joint Reconstruction, Honghui Hospital of Xi'an Jiaotong University Health Science Center, Xi'an 710068, China.
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18
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Suzuki R, Gunarta IK, Boldbaatar J, Erdenebaatar P, Odongoo R, Yoshioka K. Functional role of c-Jun NH 2-terminal kinase-associated leucine zipper protein (JLP) in lysosome localization and autophagy. Drug Discov Ther 2020; 14:35-41. [PMID: 32023558 DOI: 10.5582/ddt.2020.01001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Lysosomes are involved in many cellular functions, and in turn lysosomal dysfunction underlies a variety of diseases, including cancer and neurodegenerative diseases. Lysosomes are distributed broadly in the cytoplasm and can move throughout the cell in kinesin- and dynein-dependent manners. Although many mechanisms of lysosomal transport have been reported, how lysosomal transport is regulated has yet to be fully elucidated. In this study we analyzed c-Jun NH2-terminal kinase-associated leucine zipper protein (JLP), an adaptor of kinesin and dynein motor proteins, and found that lysosomes were localized toward the cell periphery in JLP knockdown cells, leading to the impairment of autophagosome-lysosome fusion. Furthermore, we performed rescue experiments using wild-type JLP and its various deletion mutants. The results indicated that JLP may regulate lysosome localization and autophagy through interaction of JLP with kinesin-1 heavy chain, but not with dynactin p150Glued or lysosomal transmembrane protein 55b. Our findings provide new insights into the mechanisms of lysosomal trafficking regulation. This study contributes to the understanding of how lysosomes exert their multiple functions, potentially leading to the identification of molecular targets for diseases caused by lysosomal dysfunction.
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Affiliation(s)
- Ryusuke Suzuki
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - I Ketut Gunarta
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Jambaldorj Boldbaatar
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Purev Erdenebaatar
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Ravdandorj Odongoo
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Katsuji Yoshioka
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
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19
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Protective role of c-Jun NH 2-terminal kinase-associated leucine zipper protein (JLP) in curcumin-induced cancer cell death. Biochem Biophys Res Commun 2019; 522:697-703. [PMID: 31787236 DOI: 10.1016/j.bbrc.2019.11.154] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 11/22/2019] [Indexed: 01/24/2023]
Abstract
Previous studies have established the antitumor activity of curcumin, a major component of turmeric. Increasing evidence indicates that curcumin induces autophagy, the activation of mitogen-activated protein kinase (MAPK) intracellular signaling pathways, and reactive oxygen species (ROS)-mediated cell death. The c-Jun NH2-terminal kinase (JNK)-associated leucine zipper protein (JLP), a scaffold protein for MAPK signaling pathways, has been identified as a candidate biomarker for cancer. In this study, we explored the role of JLP in curcumin-induced cancer cell death. We found that JLP knockdown (KD) increases cell death and intracellular ROS levels. Furthermore, JLP KD impaired lysosomal accumulation around perinuclear regions, which led to the inhibition of autophagosome-lysosome fusion, and attenuated p38 MAPK activation in curcumin-treated cells. The decreases in cell viability and p38 MAPK activation were reversed by expressing wild-type JLP but not a JLP mutant lacking the p38 MAPK-binding domain. In addition, the inactivation of a key gene involved in autophagy increased sensitivity to curcumin-induced cell death. Together, these results suggest that JLP mediates the induction of autophagy by regulating lysosome positioning and p38 MAPK signaling, indicating an overall protective role in curcumin-induced ROS-mediated cancer cell death.
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20
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Li F, Kitajima S, Kohno S, Yoshida A, Tange S, Sasaki S, Okada N, Nishimoto Y, Muranaka H, Nagatani N, Suzuki M, Masuda S, Thai TC, Nishiuchi T, Tanaka T, Barbie DA, Mukaida N, Takahashi C. Retinoblastoma Inactivation Induces a Protumoral Microenvironment via Enhanced CCL2 Secretion. Cancer Res 2019; 79:3903-3915. [PMID: 31189648 DOI: 10.1158/0008-5472.can-18-3604] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 04/27/2019] [Accepted: 06/07/2019] [Indexed: 01/01/2023]
Abstract
Cancer cell-intrinsic properties caused by oncogenic mutations have been well characterized; however, how specific oncogenes and tumor suppressors impact the tumor microenvironment (TME) is not well understood. Here, we present a novel non-cell-autonomous function of the retinoblastoma (RB) tumor suppressor in controlling the TME. RB inactivation stimulated tumor growth and neoangiogenesis in a syngeneic and orthotropic murine soft-tissue sarcoma model, which was associated with recruitment of tumor-associated macrophages (TAM) and immunosuppressive cells such as Gr1+CD11b+ myeloid-derived suppressor cells (MDSC) or Foxp3+ regulatory T cells (Treg). Gene expression profiling and analysis of genetically engineered mouse models revealed that RB inactivation increased secretion of the chemoattractant CCL2. Furthermore, activation of the CCL2-CCR2 axis in the TME promoted tumor angiogenesis and recruitment of TAMs and MDSCs into the TME in several tumor types including sarcoma and breast cancer. Loss of RB increased fatty acid oxidation (FAO) by activating AMP-activated protein kinase that led to inactivation of acetyl-CoA carboxylase, which suppresses FAO. This promoted mitochondrial superoxide production and JNK activation, which enhanced CCL2 expression. These findings indicate that the CCL2-CCR2 axis could be an effective therapeutic target in RB-deficient tumors. SIGNIFICANCE: These findings demonstrate the cell-nonautonomous role of the tumor suppressor retinoblastoma in the tumor microenvironment, linking retinoblastoma loss to immunosuppression.
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Affiliation(s)
- Fengkai Li
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shunsuke Kitajima
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan. .,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Susumu Kohno
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Akiyo Yoshida
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.,Keiju Medical Center, Nanao, Ishikawa, Japan
| | - Shoichiro Tange
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University, Sapporo, Japan
| | - Soichiro Sasaki
- Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Nobuhiro Okada
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.,Department of Nano-Biotechnology, Graduate School of Interdisciplinary Science & Engineering in Health Systems, Okayama University, Okayama, Okayama, Japan
| | - Yuuki Nishimoto
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Hayato Muranaka
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Naoko Nagatani
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Misa Suzuki
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Sayuri Masuda
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Tran C Thai
- Keiju Medical Center, Nanao, Ishikawa, Japan
| | - Takumi Nishiuchi
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Tomoaki Tanaka
- Department of Molecular Diagnosis, Chiba University Graduate School of Medicine, Chiba, Japan
| | - David A Barbie
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Naofumi Mukaida
- Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Chiaki Takahashi
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan.
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21
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Lee CM, Aizawa K, Jiang J, Kung SKP, Jain R. JLP-centrosome is essential for the microtubule-mediated nucleocytoplasmic transport induced by extracellular stimuli. SCIENCE ADVANCES 2019; 5:eaav0318. [PMID: 31803841 PMCID: PMC6874495 DOI: 10.1126/sciadv.aav0318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
JLP belongs to the JIP family whose members serve as scaffolding proteins that link motor proteins and their cargo for intracellular transport. Although JLP is mainly cytoplasmic, it accumulates as a focus in the perinuclear region when stimulated by extracellular stimuli. Focus formation, which changes the nucleus shape and concentrates the nuclear pores, depends on p38MAPK activation and the dynein retrograde motor protein complex. Extracellular stimuli trigger the tethering of PLK1 to the centrosome by JLP, leading to centrosome maturation and microtubule array formation. The centrosome localization domain of JLP is important for the binding of the centrosome and the formation of the JLP focus and the microtubule array. Furthermore, the formation of the JLP focus and the microtubule array is interdependent and important for the transport of NF-κB p65 to the nucleus and its unloading therein. In conclusion, JLP exhibits multiple functions in the nuclear translocation of NF-κB p65.
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Affiliation(s)
- Clement M. Lee
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Ken Aizawa
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Joshua Jiang
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sam K. P. Kung
- Department of Immunology College of Medicine, Faculty of Health Science, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada
| | - Rinku Jain
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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22
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Bohler S, Krauskopf J, Espín-Pérez A, Gebel S, Palli D, Rantakokko P, Kiviranta H, Kyrtopoulos SA, Balling R, Kleinjans J. Genes associated with Parkinson's disease respond to increasing polychlorinated biphenyl levels in the blood of healthy females. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 250:107-117. [PMID: 30991279 DOI: 10.1016/j.envpol.2019.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/13/2019] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
Abstract
Polychlorinated biphenyls (PCBs) are a class of widespread environmental pollutants, commonly found in human blood, that have been suggested to be linked to the occurrence of sporadic Parkinson's disease (PD). It has been reported that some non-coplanar PCBs accumulate in the brains of female PD patients. To improve our understanding of the association between PCB exposure and PD risk we have applied whole transcriptome gene expression analysis in blood cells from 594 PCB-exposed subjects (369 female, 225 male). Interestingly, we observe that in females, blood levels of non-coplanar PCBs appear to be associated with expression levels of PD-specific genes. However, no such association was detected in males. Among the 131 PD-specific genes affected, 39 have been shown to display similar changes in expression levels in the substantia nigra of deceased PD patients. Especially among the down-regulated genes, transcripts of genes involved in neurotransmitter vesicle-related functions were predominant.
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Affiliation(s)
- Sacha Bohler
- Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands, 6229, ER Maastricht, the Netherlands
| | - Julian Krauskopf
- Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands, 6229, ER Maastricht, the Netherlands.
| | - Almudena Espín-Pérez
- Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands, 6229, ER Maastricht, the Netherlands
| | - Stephan Gebel
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7, avenue des Hauts-Fourneaux, Esch-sur-Alzette L, 4362, Luxembourg
| | - Domenico Palli
- Istituto per lo Studio e la Prevenzione Oncologica (ISPO Toscana), FVia Cosimo Il Vecchio, 2, 50139, Florence, Italy
| | - Panu Rantakokko
- National Institute for Health and Welfare, Department of Health Security, P.O. Box 95, 70701, Kuopio, Finland
| | - Hannu Kiviranta
- National Institute for Health and Welfare, Department of Health Security, P.O. Box 95, 70701, Kuopio, Finland
| | - Soterios A Kyrtopoulos
- National Hellenic Research Foundation, Institute of Biology, Pharmaceutical Chemistry and Biotechnology, 48 Vassileos Constantinou Ave, 11635, Athens, Greece
| | - Rudi Balling
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 7, avenue des Hauts-Fourneaux, Esch-sur-Alzette L, 4362, Luxembourg
| | - Jos Kleinjans
- Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands, 6229, ER Maastricht, the Netherlands
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23
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Li R, Gunarta IK, Suzuki R, Boldbaatar J, Nakazato R, Yuliana D, Davaakhuu G, Oyunsuren T, Takamatsu N, Kobayashi M, Hirao A, Yoshioka K. JLP-JNK signaling protects cancer cells from reactive oxygen species-induced cell death. Biochem Biophys Res Commun 2019; 501:724-730. [PMID: 29753743 DOI: 10.1016/j.bbrc.2018.05.055] [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: 05/05/2018] [Accepted: 05/09/2018] [Indexed: 02/06/2023]
Abstract
Oxidative stress, which can be caused by an overproduction of reactive oxygen species (ROS), often leads to cell death. In recent years, c-Jun NH2-terminal kinase (JNK)-associated leucine zipper protein (JLP, also known as SPAG9 or JIP4), a scaffold protein for JNK mitogen-activated protein kinase (MAPK) signaling pathways, was found to serve as a novel biomarker for cancer. However, although JNK MAPK pathways are reported to be activated in response to various stimuli, including oxidative stress, whether JLP is involved in ROS signaling remains unknown. In this study, we examined the role of JLP in hydrogen peroxide (H2O2)-induced cancer cell death, and found that JLP knockdown (KD) cells exhibit a substantially enhanced cell death response, along with increased intracellular ROS levels. This is the first demonstration of a protective role for JLP in response to cell-death stimulation. We also found that the H2O2-induced JNK activation was attenuated in JLP KD cancer cells. The decreases in cell viability and JNK activation in the JLP KD cells were almost completely reversed by expressing wild-type JLP, but not a mutant JLP lacking the JNK-binding domain. These data collectively suggest that the JLP-JNK signaling pathway counteracts ROS-induced cancer cell death.
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Affiliation(s)
- Rong Li
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - I Ketut Gunarta
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Ryusuke Suzuki
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Jambaldorj Boldbaatar
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Ryota Nakazato
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Dewi Yuliana
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Gantulga Davaakhuu
- Laboratory of Molecular Biology, Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - Tsendsuren Oyunsuren
- Laboratory of Molecular Biology, Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - Nobuhiko Takamatsu
- Laboratory of Molecular Biology, Department of Biosciences, School of Science, Kitasato University, Sagamihara, Japan
| | - Masahiko Kobayashi
- Division of Molecular Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Atsushi Hirao
- Division of Molecular Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa, Japan
| | - Katsuji Yoshioka
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.
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24
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Iwasawa S, Yanagi K, Kikuchi A, Kobayashi Y, Haginoya K, Matsumoto H, Kurosawa K, Ochiai M, Sakai Y, Fujita A, Miyake N, Niihori T, Shirota M, Funayama R, Nonoyama S, Ohga S, Kawame H, Nakayama K, Aoki Y, Matsumoto N, Kaname T, Matsubara Y, Shoji W, Kure S. Recurrent de novo
MAPK8IP3
variants cause neurological phenotypes. Ann Neurol 2019; 85:927-933. [DOI: 10.1002/ana.25481] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/01/2019] [Accepted: 04/03/2019] [Indexed: 01/21/2023]
Affiliation(s)
- Shinya Iwasawa
- Department of PediatricsTohoku University Graduate School of Medicine Sendai Japan
| | - Kumiko Yanagi
- National Center for Child Health and Development Tokyo Japan
| | - Atsuo Kikuchi
- Department of PediatricsTohoku University Graduate School of Medicine Sendai Japan
| | - Yasuko Kobayashi
- Department of PediatricsNational Hospital Organization Sendai‐Nishitaga Hospital Sendai Japan
- Department of Pediatric NeurologyTakuto Rehabilitation Center for Children Sendai Japan
| | - Kazuhiro Haginoya
- Department of Pediatric NeurologyTakuto Rehabilitation Center for Children Sendai Japan
- Department of Pediatric NeurologyMiyagi Children's Hospital Sendai Japan
| | - Hiroshi Matsumoto
- Department of PediatricsNational Defense Medical College Saitama Japan
| | - Kenji Kurosawa
- Division of Medical GeneticsKanagawa Children's Medical Center Yokohama Japan
| | - Masayuki Ochiai
- Department of PediatricsGraduate School of Medical Sciences, Kyushu University Fukuoka Japan
| | - Yasunari Sakai
- Department of PediatricsGraduate School of Medical Sciences, Kyushu University Fukuoka Japan
| | - Atsushi Fujita
- Department of Human GeneticsYokohama City University Graduate School of Medicine Yokohama Japan
| | - Noriko Miyake
- Department of Human GeneticsYokohama City University Graduate School of Medicine Yokohama Japan
| | - Tetsuya Niihori
- Department of Medical GeneticsTohoku University Graduate School of Medicine Sendai Japan
| | - Matsuyuki Shirota
- Division of Interdisciplinary Medical Sciences, United Centers for Advanced Research and Translational MedicineTohoku University Graduate School of Medicine Sendai Japan
| | - Ryo Funayama
- Division of Cell Proliferation, United Centers for Advanced Research and Translational MedicineTohoku University Graduate School of Medicine Sendai Japan
| | - Shigeaki Nonoyama
- Department of PediatricsNational Defense Medical College Saitama Japan
| | - Shouichi Ohga
- Department of PediatricsGraduate School of Medical Sciences, Kyushu University Fukuoka Japan
| | - Hiroshi Kawame
- Tohoku Medical Megabank organizationTohoku University Sendai Japan
| | - Keiko Nakayama
- Division of Cell Proliferation, United Centers for Advanced Research and Translational MedicineTohoku University Graduate School of Medicine Sendai Japan
| | - Yoko Aoki
- Department of Medical GeneticsTohoku University Graduate School of Medicine Sendai Japan
| | - Naomichi Matsumoto
- Department of Human GeneticsYokohama City University Graduate School of Medicine Yokohama Japan
| | - Tadashi Kaname
- National Center for Child Health and Development Tokyo Japan
| | | | - Wataru Shoji
- Frontier Research Institute for Interdisciplinary SciencesTohoku University Sendai Japan
| | - Shigeo Kure
- Department of PediatricsTohoku University Graduate School of Medicine Sendai Japan
- Tohoku Medical Megabank organizationTohoku University Sendai Japan
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25
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Ma Q, Liu Y, Chen L. JIP3 deficiency attenuates cardiac hypertrophy by suppression of JNK pathway. Biochem Biophys Res Commun 2018; 503:1-7. [PMID: 29604277 DOI: 10.1016/j.bbrc.2018.03.208] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 03/27/2018] [Indexed: 01/22/2023]
Abstract
Pathological cardiac hypertrophy is a leading cause of morbidity and mortality worldwide; however, our understanding of the molecular mechanisms revealing the disease is still unclear. In the present study, we suggested that c-Jun N-terminal kinase (JNK)-interacting protein 3 (JIP3), involved in various cellular processes, played an essential role in regulating pathological cardiac hypertrophy through in vivo and in vitro studies. JIP3 was highly expressed in human hearts with hypertrophic cardiomyopathy (HCM), and in mouse hypertrophic hearts. Following, the wild type (WT) and JIP3-knockout (KO) mice subjected to aortic banding (AB) challenge were used as animal models with cardiac hypertrophy. The results showed that JIP3-KO mice after AB operation exhibited attenuated cardiac function, reduced fibrosis levels and decreased hypertrophic marker proteins, including atrial natriuretic peptides (Anp) and brain/B-type natriuretic peptides (Bnp) and β-myosin heavy chain (β-Mhc). Loss of JIP3 also ameliorated oxidative stress, inflammatory response, apoptosis and endoplasmic reticulum (ER) stress in hearts of mice after AB surgery. Consistently, the expressions of ER stress-related molecules, such as phosphorylated-α-subunit of the eukaryotic initiation factor-2 (eIF2α), glucose-regulated protein (GRP) 78 and C/-EBP homologous protein (CHOP), were markedly decreased by JIP3-deficiency in hearts of AB-operated mice. JNK and its down-streaming signal of p90rsk was highly activated by AB operation in WT mice, while being significantly reversed by JIP3-ablation. Intriguingly, the in vitro results showed that promoting JNK activation by using its activator of anisomycin enhanced AngII-stimulated ER stress, oxidative stress, apoptosis and inflammatory response in cardiomyocytes isolated from WT mice. However, JIP3-KO-attenuated these pathologies was rescued by anisomycin treatment in AngII-incubated cardiomyocytes. Together, the findings indicated that blockage of JIP3 could alleviate cardiac hypertrophy via inactivating JNK pathway, and thus might be a promising strategy to prevent pathological cardiac hypertrophy.
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Affiliation(s)
- Qinghua Ma
- Department of Cardiology, Linyi Central Hospital of Shandong Province, Linyi 276400, China
| | - Yuxiu Liu
- Department of Geriatric Medicine, Linyi Central Hospital of Shandong Province, Linyi 276400, China
| | - Lianghua Chen
- Department of Cardiology, Shandong Provincial Hospital, Jinan 250021, China.
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26
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JIP3 localises to exocytic vesicles and focal adhesions in the growth cones of differentiated PC12 cells. Mol Cell Biochem 2017; 444:1-13. [PMID: 29159770 PMCID: PMC6002436 DOI: 10.1007/s11010-017-3222-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/15/2017] [Indexed: 02/01/2023]
Abstract
The JNK-interacting protein 3 (JIP3) is a molecular scaffold, expressed predominantly in neurons, that serves to coordinate the activation of the c-Jun N-terminal kinase (JNK) by binding to JNK and the upstream kinases involved in its activation. The JNK pathway is involved in the regulation of many cellular processes including the control of cell survival, cell death and differentiation. JIP3 also associates with microtubule motor proteins such as kinesin and dynein and is likely an adapter protein involved in the tethering of vesicular cargoes to the motors involved in axonal transport in neurons. We have used immunofluorescence microscopy and biochemical fractionation to investigate the subcellular distribution of JIP3 in relation to JNK and to vesicular and organelle markers in rat pheochromocytoma cells (PC12) differentiating in response to nerve growth factor. In differentiated PC12 cells, JIP3 was seen to accumulate in growth cones at the tips of developing neurites where it co-localised with both JNK and the JNK substrate paxillin. Cellular fractionation of PC12 cells showed that JIP3 was associated with a subpopulation of vesicles in the microsomal fraction, distinct from synaptic vesicles, likely to be an anterograde-directed exocytic vesicle pool. In differentiated PC12 cells, JIP3 did not appear to associate with retrograde endosomal vesicles thought to be involved in signalling axonal injury. Together, these observations indicate that JIP3 may be involved in transporting vesicular cargoes to the growth cones of PC12 cells, possibly targeting JNK to its substrate paxillin, and thus facilitating neurite outgrowth.
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27
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Sun T, Li Y, Li T, Ma H, Guo Y, Jiang X, Hou M, Huang S, Chen Z. JIP1 and JIP3 cooperate to mediate TrkB anterograde axonal transport by activating kinesin-1. Cell Mol Life Sci 2017; 74:4027-4044. [PMID: 28638935 PMCID: PMC11107601 DOI: 10.1007/s00018-017-2568-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 06/06/2017] [Accepted: 06/13/2017] [Indexed: 11/28/2022]
Abstract
Long-range anterograde axonal transport of TrkB is important for neurons to exert appropriate BDNF responses. TrkB anterograde axonal delivery is mediated by kinesin-1, which associates with TrkB via the adaptor protein JIP3 or the Slp1/Rab27B/CRMP-2 protein complex. However, little is known about the activation mechanisms of TrkB-loaded kinesin-1. Here, we show that JIP1 mediates TrkB anterograde axonal transport using JIP1 knockout mice, sciatic nerve ligation analysis and live imaging. Next, we proved that JIP1 and JIP3 cooperate to mediate TrkB anterograde axonal transport. Finally, microtubule-binding and microfluidic chamber assays revealed that JIP1 and JIP3 cooperate to relieve kinesin-1 autoinhibition, which depends on the binding of JIP1 to kinesin-1 heavy chain (KHC) and light chain (KLC) and the binding of JIP3 to KLC and is essential for TrkB anterograde axonal transport and BDNF-induced TrkB retrograde signal. These findings could deepen our understanding of the regulation mechanism underlying TrkB anterograde axonal transport and provide a novel kinesin-1 autoinhibition-relieving model.
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Affiliation(s)
- Tao Sun
- Shandong Provincial Key Laboratory of Immunohematology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, People's Republic of China
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Yuan Li
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Ting Li
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Huixian Ma
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Yunyun Guo
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Xingyu Jiang
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Ming Hou
- Shandong Provincial Key Laboratory of Immunohematology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, People's Republic of China
| | - Shuhong Huang
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China.
| | - Zheyu Chen
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, School of Medicine, Collaborative Innovation Center for Brain Science, Shandong University, No. 44 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China.
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28
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Gowrishankar S, Wu Y, Ferguson SM. Impaired JIP3-dependent axonal lysosome transport promotes amyloid plaque pathology. J Cell Biol 2017; 216:3291-3305. [PMID: 28784610 PMCID: PMC5626538 DOI: 10.1083/jcb.201612148] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 05/18/2017] [Accepted: 07/06/2017] [Indexed: 12/29/2022] Open
Abstract
Axonal lysosomes accumulate abnormally in Alzheimer’s disease brains. However, whether and how such lysosomes contribute to disease pathology has been unclear. Gowrishankar et al. show that the JIP3-dependent transport of axonal lysosomes negatively regulates amyloid precursor protein processing into amyloidogenic peptides. Lysosomes robustly accumulate within axonal swellings at Alzheimer’s disease (AD) amyloid plaques. However, the underlying mechanisms and disease relevance of such lysosome accumulations are not well understood. Motivated by these problems, we identified JNK-interacting protein 3 (JIP3) as an important regulator of axonal lysosome transport and maturation. JIP3 knockout mouse neuron primary cultures accumulate lysosomes within focal axonal swellings that resemble the dystrophic axons at amyloid plaques. These swellings contain high levels of amyloid precursor protein processing enzymes (BACE1 and presenilin 2) and are accompanied by elevated Aβ peptide levels. The in vivo importance of the JIP3-dependent regulation of axonal lysosomes was revealed by the worsening of the amyloid plaque pathology arising from JIP3 haploinsufficiency in a mouse model of AD. These results establish the critical role of JIP3-dependent axonal lysosome transport in regulating amyloidogenic amyloid precursor protein processing and support a model wherein Aβ production is amplified by plaque-induced axonal lysosome transport defects.
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Affiliation(s)
- Swetha Gowrishankar
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT.,Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT
| | - Yumei Wu
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT.,Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT
| | - Shawn M Ferguson
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT .,Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT
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29
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Gunarta IK, Li R, Nakazato R, Suzuki R, Boldbaatar J, Suzuki T, Yoshioka K. Critical role of glioma-associated oncogene homolog 1 in maintaining invasive and mesenchymal-like properties of melanoma cells. Cancer Sci 2017; 108:1602-1611. [PMID: 28635133 PMCID: PMC5543504 DOI: 10.1111/cas.13294] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 05/30/2017] [Accepted: 06/03/2017] [Indexed: 12/14/2022] Open
Abstract
Cutaneous melanoma is the most aggressive form of skin cancer. This aggressiveness appears to be due to the cancer cells' ability to reversibly switch between phenotypes with non-invasive and invasive potential, and microphthalmia-associated transcription factor (MITF) is known to play a central role in this process. The transcription factor glioma-associated oncogene homolog 1 (GLI1) is a component of the canonical and noncanonical sonic hedgehog pathways. Although GLI1 has been suggested to be involved in melanoma progression, its precise role and the mechanism underlying invasion remain unclear. Here we investigated whether and how GLI1 is involved in the invasive ability of melanoma cells. Gli1 knockdown (KD) melanoma cell lines, established by using Gli1-targeting lentiviral short hairpin RNA, exhibited a markedly reduced invasion ability, but their MITF expression and activity were the same as controls. Gli1 KD melanoma cells also led to less lung metastasis in mice compared with control melanoma cells. Furthermore, the Gli1 KD melanoma cells underwent a mesenchymal-to-epithelial-like transition, accompanied by downregulation of the epithelial-to-mesenchymal transition (EMT)-inducing transcription factors (EMT-TF) Snail1, Zeb1 and Twist1, but not Snail2 or Zeb2. Collectively, these results indicate that GLI1 is important for maintaining the invasive and mesenchymal-like properties of melanoma cells independent of MITF, most likely by modulating a subset of EMT-TF. Our findings provide new insight into how heterogeneity and plasticity are achieved and regulated in melanoma.
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Affiliation(s)
- I Ketut Gunarta
- Division of Molecular Cell SignalingCancer Research InstituteKanazawa UniversityKanazawaJapan
| | - Rong Li
- Division of Molecular Cell SignalingCancer Research InstituteKanazawa UniversityKanazawaJapan
| | - Ryota Nakazato
- Division of Molecular Cell SignalingCancer Research InstituteKanazawa UniversityKanazawaJapan
| | - Ryusuke Suzuki
- Division of Molecular Cell SignalingCancer Research InstituteKanazawa UniversityKanazawaJapan
| | - Jambaldorj Boldbaatar
- Division of Molecular Cell SignalingCancer Research InstituteKanazawa UniversityKanazawaJapan
| | - Takeshi Suzuki
- Division of Functional GenomicCancer Research InstituteKanazawa UniversityKanazawaJapan
| | - Katsuji Yoshioka
- Division of Molecular Cell SignalingCancer Research InstituteKanazawa UniversityKanazawaJapan
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30
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Liao PC, Tandarich LC, Hollenbeck PJ. ROS regulation of axonal mitochondrial transport is mediated by Ca2+ and JNK in Drosophila. PLoS One 2017; 12:e0178105. [PMID: 28542430 PMCID: PMC5436889 DOI: 10.1371/journal.pone.0178105] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/06/2017] [Indexed: 12/31/2022] Open
Abstract
Mitochondria perform critical functions including aerobic ATP production and calcium (Ca2+) homeostasis, but are also a major source of reactive oxygen species (ROS) production. To maintain cellular function and survival in neurons, mitochondria are transported along axons, and accumulate in regions with high demand for their functions. Oxidative stress and abnormal mitochondrial axonal transport are associated with neurodegenerative disorders. However, we know little about the connection between these two. Using the Drosophila third instar larval nervous system as the in vivo model, we found that ROS inhibited mitochondrial axonal transport more specifically, primarily due to reduced flux and velocity, but did not affect transport of other organelles. To understand the mechanisms underlying these effects, we examined Ca2+ levels and the JNK (c-Jun N-terminal Kinase) pathway, which have been shown to regulate mitochondrial transport and general fast axonal transport, respectively. We found that elevated ROS increased Ca2+ levels, and that experimental reduction of Ca2+ to physiological levels rescued ROS-induced defects in mitochondrial transport in primary neuron cell cultures. In addition, in vivo activation of the JNK pathway reduced mitochondrial flux and velocities, while JNK knockdown partially rescued ROS-induced defects in the anterograde direction. We conclude that ROS have the capacity to regulate mitochondrial traffic, and that Ca2+ and JNK signaling play roles in mediating these effects. In addition to transport defects, ROS produces imbalances in mitochondrial fission-fusion and metabolic state, indicating that mitochondrial transport, fission-fusion steady state, and metabolic state are closely interrelated in the response to ROS.
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Affiliation(s)
- Pin-Chao Liao
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana, United States of America
| | - Lauren C. Tandarich
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana, United States of America
| | - Peter J. Hollenbeck
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana, United States of America
- * E-mail:
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31
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Yan Q, Yang C, Fu Q, Chen Z, Liu S, Fu D, Rahman RN, Nakazato R, Yoshioka K, Kung SKP, Ding G, Wang H. Scaffold protein JLP mediates TCR-initiated CD4 +T cell activation and CD154 expression. Mol Immunol 2017; 87:258-266. [PMID: 28521278 DOI: 10.1016/j.molimm.2017.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 04/27/2017] [Accepted: 05/06/2017] [Indexed: 11/16/2022]
Abstract
CD4+ T-cell activation and its subsequent induction of CD154 (CD40 ligand, CD40L) expression are pivotal in shaping both the humoral and cellular immune responses. Scaffold protein JLP regulates signal transduction pathways and molecular trafficking inside cells, thus represents a critical component in maintaining cellular functions. Its role in regulating CD4+ T-cell activation and CD154 expression, however, is unclear. Here, we demonstrated expression of JLP in mouse tissues of lymph nodes, thymus, spleen, and also CD4+ T cells. Using CD4+ T cells from jlp-deficient and jlp-wild-type mice, we demonstrated that JLP-deficiency impaired T-cell proliferation, IL-2 production, and CD154 induction upon TCR stimulations, but had no impacts on the expression of other surface molecules such as CD25, CD69, and TCR. These observed impaired T-cell functions in the jlp-/- CD4+ T cells were associated with defective NF-AT activation and Ca2+ influx, but not the MAPK, NF-κB, as well as AP-1 signaling pathways. Our findings indicated that, for the first time, JLP plays a critical role in regulating CD4+ T cells response to TCR stimulation partly by mediating the activation of TCR-initiated Ca2+/NF-AT.
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Affiliation(s)
- Qi Yan
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China
| | - Cheng Yang
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China
| | - Qiang Fu
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China
| | - Zhaowei Chen
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China
| | - Shan Liu
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China
| | - Dou Fu
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China
| | - Rahmat N Rahman
- Department of Immunology, Max Rady College of Medicine, University of Manitoba, Canada
| | - Ryota Nakazato
- Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuji Yoshioka
- Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Sam K P Kung
- Department of Immunology, Max Rady College of Medicine, University of Manitoba, Canada
| | - Guohua Ding
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China.
| | - Huiming Wang
- Department of Nephrology, Renmin hospital of Wuhan University, Wuhan, China.
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32
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Jang WH, Jeong YJ, Choi SH, Urm SH, Seog DH. Interaction of FUN14 domain containing 1, a mitochondrial outer membrane protein, with kinesin light chain 1 via the tetratricopeptide repeat domain. Biomed Rep 2016; 6:46-50. [PMID: 28123706 DOI: 10.3892/br.2016.818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/09/2016] [Indexed: 01/16/2023] Open
Abstract
Kinesin 1 is a member of the kinesin superfamily proteins (KIFs) of microtubule-dependent molecular motor proteins that transport organelles and protein complexes in cells. Kinesin 1 consists of a homo- or hetero-dimer of kinesin heavy chains (KHCs), often, although not always, associated with two kinesin light chains (KLCs). KLCs are non-motor proteins that associate with many different binding proteins and cargoes, but their binding partners have not yet been fully identified. In the present study, a yeast two-hybrid system was used to identify proteins that interact with the tetratricopeptide repeat (TPR) domain of KLC1. The results of the current study revealed an interaction between the TPR domain of KLC1 and FUN14 domain-containing protein 1 (FUNDC1), which is a mitochondrial outer membrane protein mediating hypoxia-induced mitophagy. FUNDC1 bound to the six TPR motif-containing regions of KLC1 and did not interact with KIF5B (a motor subunit of kinesin 1) and KIF3A (a motor subunit of kinesin 2) in the yeast two-hybrid assay. The cytoplasmic amino N-terminal domain of FUNDC1 is essential for interaction with KLC1. When co-expressed in HEK-293T cells, FUNDC1 co-localized with KLC1 and co-immunoprecipitated with KLC1, but not KIF5B. Collectively, these results indicate that KLC1 may potentially compete with LC3, a key component for autophagosome formation, to interact with FUNDC1.
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Affiliation(s)
- Won Hee Jang
- Department of Biochemistry, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Young Joo Jeong
- Department of Biochemistry, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Sun Hee Choi
- Department of Biochemistry, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Sang-Hwa Urm
- Department of Preventive Medicine, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Dae-Hyun Seog
- Department of Biochemistry, Inje University College of Medicine, Busan 614-735, Republic of Korea
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33
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Miller KG. Keeping Neuronal Cargoes on the Right Track: New Insights into Regulators of Axonal Transport. Neuroscientist 2016; 23:232-250. [PMID: 27154488 DOI: 10.1177/1073858416648307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In neurons, a single motor (dynein) transports large organelles as well as synaptic and dense core vesicles toward microtubule minus ends; however, it is unclear why dynein appears more active on organelles, which are generally excluded from mature axons, than on synaptic and dense core vesicles, which are maintained at high levels. Recent studies in Zebrafish and Caenorhabditis elegans have shown that JIP3 promotes dynein-mediated retrograde transport to clear some organelles (lysosomes, early endosomes, and Golgi) from axons and prevent their potentially harmful accumulation in presynaptic regions. A JIP3 mutant suppressor screen in C. elegans revealed that JIP3 promotes the clearance of organelles from axons by blocking the action of the CSS system (Cdk5, SAD Kinase, SYD-2/Liprin). A synthesis of results in vertebrates with the new findings suggests that JIP3 blocks the CSS system from disrupting the connection between dynein and organelles. Most components of the CSS system are enriched at presynaptic active zones where they normally contribute to maintaining optimal levels of captured synaptic and dense core vesicles, in part by inhibiting dynein transport. The JIP3-CSS system model explains how neurons selectively regulate a single minus-end motor to exclude specific classes of organelles from axons, while at the same time ensuring optimal levels of synaptic and dense core vesicles.
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Affiliation(s)
- Kenneth G Miller
- 1 Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
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Zheng Y, Tian S, Peng X, Yang J, Fu Y, Jiao Y, Zhao J, He J, Hong T. Kinesin-1 inhibits the aggregation of amyloid-β peptide as detected by fluorescence cross-correlation spectroscopy. FEBS Lett 2016; 590:1028-37. [DOI: 10.1002/1873-3468.12137] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 02/04/2016] [Accepted: 03/11/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Yanpeng Zheng
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
| | - Shijun Tian
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
| | - Xianglei Peng
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
| | - Jingfa Yang
- Beijing National Laboratory for Molecular Science; Institute of Chemistry; Chinese Academy of Sciences; Beijing China
| | - Yuanhui Fu
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
| | - Yueying Jiao
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
| | - Jiang Zhao
- Beijing National Laboratory for Molecular Science; Institute of Chemistry; Chinese Academy of Sciences; Beijing China
| | - Jinsheng He
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
| | - Tao Hong
- College of Life Sciences and Bioengineering; Beijing Jiaotong University; China
- Institute for Viral Disease Control and Prevention; Chinese Centre for Disease Control and Prevention; Beijing China
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Sato T, Ishikawa M, Yoshihara T, Nakazato R, Higashida H, Asano M, Yoshioka K. Critical role of JSAP1 and JLP in axonal transport in the cerebellar Purkinje cells of mice. FEBS Lett 2015; 589:2805-11. [PMID: 26320416 DOI: 10.1016/j.febslet.2015.08.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 08/01/2015] [Accepted: 08/13/2015] [Indexed: 11/15/2022]
Abstract
JNK/stress-activated protein kinase-associated protein 1 (JSAP1) and JNK-associated leucine zipper protein (JLP) are structurally related scaffolding proteins that are highly expressed in the brain. Here, we found that JSAP1 and JLP play functionally redundant and essential roles in mouse cerebellar Purkinje cell (PC) survival. Mice containing PCs with deletions in both JSAP1 and JLP exhibited PC axonal dystrophy, followed by gradual, progressive neuronal loss. Kinesin-1 cargoes accumulated selectively in the swollen axons of Jsap1/Jlp-deficient PCs. In addition, autophagy inactivation in these mice markedly accelerated PC degeneration. These findings suggest that JSAP1 and JLP play critical roles in kinesin-1-dependent axonal transport, which prevents brain neuronal degeneration.
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Affiliation(s)
- Tokiharu Sato
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Momoe Ishikawa
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Toru Yoshihara
- Division of Transgenic Animal Science, Advanced Science Research Center, Kanazawa University, Kanazawa 920-8640, Japan
| | - Ryota Nakazato
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Haruhiro Higashida
- Research Center for Child Mental Development, Kanazawa University, Kanazawa 920-8640, Japan
| | - Masahide Asano
- Division of Transgenic Animal Science, Advanced Science Research Center, Kanazawa University, Kanazawa 920-8640, Japan
| | - Katsuji Yoshioka
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
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Edwards SL, Morrison LM, Yorks RM, Hoover CM, Boominathan S, Miller KG. UNC-16 (JIP3) Acts Through Synapse-Assembly Proteins to Inhibit the Active Transport of Cell Soma Organelles to Caenorhabditis elegans Motor Neuron Axons. Genetics 2015; 201:117-41. [PMID: 26354976 PMCID: PMC4566257 DOI: 10.1534/genetics.115.177345] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/24/2015] [Indexed: 12/31/2022] Open
Abstract
The conserved protein UNC-16 (JIP3) inhibits the active transport of some cell soma organelles, such as lysosomes, early endosomes, and Golgi, to the synaptic region of axons. However, little is known about UNC-16's organelle transport regulatory function, which is distinct from its Kinesin-1 adaptor function. We used an unc-16 suppressor screen in Caenorhabditis elegans to discover that UNC-16 acts through CDK-5 (Cdk5) and two conserved synapse assembly proteins: SAD-1 (SAD-A Kinase), and SYD-2 (Liprin-α). Genetic analysis of all combinations of double and triple mutants in unc-16(+) and unc-16(-) backgrounds showed that the three proteins (CDK-5, SAD-1, and SYD-2) are all part of the same organelle transport regulatory system, which we named the CSS system based on its founder proteins. Further genetic analysis revealed roles for SYD-1 (another synapse assembly protein) and STRADα (a SAD-1-interacting protein) in the CSS system. In an unc-16(-) background, loss of the CSS system improved the sluggish locomotion of unc-16 mutants, inhibited axonal lysosome accumulation, and led to the dynein-dependent accumulation of lysosomes in dendrites. Time-lapse imaging of lysosomes in CSS system mutants in unc-16(+) and unc-16(-) backgrounds revealed active transport defects consistent with the steady-state distributions of lysosomes. UNC-16 also uses the CSS system to regulate the distribution of early endosomes in neurons and, to a lesser extent, Golgi. The data reveal a new and unprecedented role for synapse assembly proteins, acting as part of the newly defined CSS system, in mediating UNC-16's organelle transport regulatory function.
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Affiliation(s)
- Stacey L Edwards
- Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| | - Logan M Morrison
- Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| | - Rosalina M Yorks
- Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| | - Christopher M Hoover
- Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| | - Soorajnath Boominathan
- Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| | - Kenneth G Miller
- Genetic Models of Disease Laboratory, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
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