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Pandita S, Verma A, Kamboj H, Kumar R, Chander Y, Barua S, Tripathi BN, Kumar N. miRNA profiling of primary lamb testicle cells infected with lumpy skin disease virus. Arch Virol 2023; 168:290. [PMID: 37955695 DOI: 10.1007/s00705-023-05917-0] [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: 05/02/2023] [Accepted: 09/27/2023] [Indexed: 11/14/2023]
Abstract
In this study, miRNA profiling of cells infected with lumpy skin disease virus (LSDV) was conducted for the first time. When compared to mock-infected cells, LSDV-infected primary lamb testicle (LT) cells showed dysregulation of 64, 85, and 85 miRNAs at 12 hours postinfection (hpi), 48 hpi, and 72 hpi, respectively. While some of these miRNAs were found to be dysregulated at a particular time point following LSDV infection, others were dysregulated at all three time points. Analysis of the differentially expressed miRNA-mRNA interaction networks, Gene Ontology analysis of the predicted targets, and KEGG analysis of highly enriched pathways revealed several cellular factors/pathways involved in protein/ion/enzyme binding, cell differentiation, movement of subcellular components, calcium reabsorption, aldosterone synthesis and secretion, and melanogenesis. Some selected upregulated (oar-mir-379-5p, oar-let-7d, Chr10-18769, Chr2_5162 and oar-miR-493-5p) and downregulated (ChrX-33741, Chr3_8257 and Chr26_32680) miRNAs were further confirmed by quantitative real-time PCR. These findings contribute to our understanding of virus replication, virus-host interactions, and disease pathogenesis, and the differentially expressed miRNAs and their cellular targets may serve as biomarkers as well as novel targets for therapeutic intervention against LSDV.
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Affiliation(s)
- Sakshi Pandita
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
- Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, 125004, India
| | - Assim Verma
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
| | - Himanshu Kamboj
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
| | - Ram Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
| | - Yogesh Chander
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
| | - Sanjay Barua
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
| | - Bhupendra Nath Tripathi
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India
| | - Naveen Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, Haryana, 125001, India.
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2
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Guo Z, Zhang H, Liu X, Zhao Y, Chen Y, Jin J, Guo C, Zhang M, Gu F, Ma Y. Water channel protein AQP1 in cytoplasm is a critical factor in breast cancer local invasion. J Exp Clin Cancer Res 2023; 42:49. [PMID: 36803413 PMCID: PMC9940370 DOI: 10.1186/s13046-023-02616-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 02/02/2023] [Indexed: 02/21/2023] Open
Abstract
BACKGROUND Metastasis of breast cancer grows from the local invasion to the distant colonization. Blocking the local invasion step would be promising for breast cancer treatment. Our present study demonstrated AQP1 was a crucial target in breast cancer local invasion. METHODS Mass spectrometry combined with bioinformatics analysis was used to identify AQP1 associated proteins ANXA2 and Rab1b. Co-immunoprecipitation, immunofluorescence assays and cell functional experiments were carried out to define the relationship among AQP1, ANXA2 and Rab1b and their re-localization in breast cancer cells. The Cox proportional hazards regression model was performed toward the identification of relevant prognostic factors. Survival curves were plotted by the Kaplan-Meier method and compared by the log-rank test. RESULTS Here, we show that the cytoplasmic water channel protein AQP1, a crucial target in breast cancer local invasion, recruited ANXA2 from the cellular membrane to the Golgi apparatus, promoted Golgi apparatus extension, and induced breast cancer cell migration and invasion. In addition, cytoplasmic AQP1 recruited cytosolic free Rab1b to the Golgi apparatus to form a ternary complex containing AQP1, ANXA2, and Rab1b, which induced cellular secretion of the pro-metastatic proteins ICAM1 and CTSS. Cellular secretion of ICAM1 and CTSS led to the migration and invasion of breast cancer cells. Both in vivo assay and clinical analysis data confirmed above results. CONCLUSIONS Our findings suggested a novel mechanism for AQP1-induced breast cancer local invasion. Therefore, targeting AQP1 offers promises in breast cancer treatment.
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Affiliation(s)
- Zhifang Guo
- grid.411918.40000 0004 1798 6427Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060 People’s Republic of China ,grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Huikun Zhang
- grid.411918.40000 0004 1798 6427Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060 People’s Republic of China ,grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Xiaoli Liu
- grid.411918.40000 0004 1798 6427Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060 People’s Republic of China ,grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Yawen Zhao
- grid.411918.40000 0004 1798 6427Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060 People’s Republic of China ,grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Yongzi Chen
- grid.411918.40000 0004 1798 6427Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060 People’s Republic of China ,grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Jiaqi Jin
- grid.411918.40000 0004 1798 6427Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060 People’s Republic of China ,grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Caixia Guo
- grid.410726.60000 0004 1797 8419CAS Key Laboratory of Genomics and Precision Medicine, Beijing Institute of Genomics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China National Center for Bioinformation, Beijing, 100101 China
| | - Ming Zhang
- grid.213876.90000 0004 1936 738XDepartment of Epidemiology and Biostatistics, University of Georgia, Athens, GA USA
| | - Feng Gu
- grid.411918.40000 0004 1798 6427Tianjin’s Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China ,grid.411918.40000 0004 1798 6427Key Laboratory of Cancer Prevention and Therapy, Tianjin, China ,grid.265021.20000 0000 9792 1228Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China ,grid.411918.40000 0004 1798 6427Department of Breast Cancer Pathology and Research Laboratory, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Yongjie Ma
- Department of Tumor Cell Biology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Huanhu West Road, Hexi District, Tianjin, 300060, People's Republic of China. .,Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China. .,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China. .,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China.
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3
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Matsuoka R, Miki M, Mizuno S, Ito Y, Yamada C, Suzuki A. MTCL2 promotes asymmetric microtubule organization by crosslinking microtubules on the Golgi membrane. J Cell Sci 2022; 135:275616. [PMID: 35543016 DOI: 10.1242/jcs.259374] [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: 09/10/2021] [Accepted: 04/20/2022] [Indexed: 11/20/2022] Open
Abstract
The Golgi complex plays an active role in organizing asymmetric microtubule arrays essential for polarized vesicle transport. The coiled-coil protein MTCL1 stabilizes microtubules nucleated from the Golgi membrane. Here, we report an MTCL1 paralog, MTCL2, which preferentially acts on the perinuclear microtubules accumulated around the Golgi. MTCL2 associates with the Golgi membrane through the N-terminal coiled-coil region and directly binds microtubules through the conserved C-terminal domain without promoting microtubule stabilization. Knockdown of MTCL2 significantly impaired microtubule accumulation around the Golgi as well as the compactness of the Golgi ribbon assembly structure. Given that MTCL2 forms parallel oligomers through homo-interaction of the central coiled-coil motifs, our results indicate that MTCL2 promotes asymmetric microtubule organization by crosslinking microtubules on the Golgi membrane. Results of in vitro wound healing assays further suggest that this function of MTCL2 enables integration of the centrosomal and Golgi-associated microtubules on the Golgi membrane, supporting directional migration. Additionally, the results demonstrated the involvement of CLASPs and giantin in mediating the Golgi association of MTCL2.
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Affiliation(s)
- Risa Matsuoka
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Masateru Miki
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Sonoko Mizuno
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Yurina Ito
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Chihiro Yamada
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Atsushi Suzuki
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
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4
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Mascanzoni F, Iannitti R, Colanzi A. Functional Coordination among the Golgi Complex, the Centrosome and the Microtubule Cytoskeleton during the Cell Cycle. Cells 2022; 11:cells11030354. [PMID: 35159164 PMCID: PMC8834581 DOI: 10.3390/cells11030354] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 12/11/2022] Open
Abstract
The Golgi complex of mammalian cells is organized in a ribbon-like structure often closely associated with the centrosome during interphase. Conversely, the Golgi complex assumes a fragmented and dispersed configuration away from the centrosome during mitosis. The structure of the Golgi complex and the relative position to the centrosome are dynamically regulated by microtubules. Many pieces of evidence reveal that this microtubule-mediated dynamic association between the Golgi complex and centrosome is of functional significance in cell polarization and division. Here, we summarize findings indicating how the Golgi complex and the centrosome cooperate in organizing the microtubule network for the directional protein transport and centrosome positioning required for cell polarization and regulating fundamental cell division processes.
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5
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Branched Actin Maintains Acetylated Microtubule Network in the Early Secretory Pathway. Cells 2021; 11:cells11010015. [PMID: 35011578 PMCID: PMC8750537 DOI: 10.3390/cells11010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/12/2021] [Accepted: 12/17/2021] [Indexed: 11/17/2022] Open
Abstract
In the early secretory pathway, the delivery of anterograde cargoes from the endoplasmic reticulum (ER) exit sites (ERES) to the Golgi apparatus is a multi-step transport process occurring via the ER-Golgi intermediate compartment (IC, also called ERGIC). While the role microtubules in ER-to-Golgi transport has been well established, how the actin cytoskeleton contributes to this process remains poorly understood. Here, we report that Arp2/3 inhibition affects the network of acetylated microtubules around the Golgi and induces the accumulation of unusually long RAB1/GM130-positive carriers around the centrosome. These long carriers are less prone to reach the Golgi apparatus, and arrival of anterograde cargoes to the Golgi is decreased upon Arp2/3 inhibition. Our data suggest that Arp2/3-dependent actin polymerization maintains a stable network of acetylated microtubules, which ensures efficient cargo trafficking at the late stage of ER to Golgi transport.
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6
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SOGA1 and SOGA2/MTCL1 are CLASP-interacting proteins required for faithful chromosome segregation in human cells. Chromosome Res 2021; 29:159-173. [PMID: 33587225 DOI: 10.1007/s10577-021-09651-8] [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: 12/14/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 10/22/2022]
Abstract
CLASPs are key modulators of microtubule dynamics throughout the cell cycle. During mitosis, CLASPs independently associate with growing microtubule plus-ends and kinetochores and play essential roles in chromosome segregation. In a proteomic survey for human CLASP1-interacting proteins during mitosis, we have previously identified SOGA1 and SOGA2/MTCL1, whose mitotic roles remained uncharacterized. Here we performed an initial functional characterization of human SOGA1 and SOGA2/MTCL1 during mitosis. Using specific polyclonal antibodies raised against SOGA proteins, we confirmed their expression and reciprocal interaction with CLASP1 and CLASP2 during mitosis. In addition, we found that both SOGA1 and SOGA2/MTCL1 are phospho-regulated during mitosis by CDK1. Immunofluorescence analysis revealed that SOGA2/MTCL1 co-localizes with mitotic spindle microtubules and spindle poles throughout mitosis and both SOGA proteins are enriched at the midbody during mitotic exit/cytokinesis. GFP-tagging of SOGA2/MTCL1 further revealed a microtubule-independent localization at kinetochores. Live-cell imaging after siRNA-mediated knockdown of SOGA1 and SOGA2/MTCL1 showed that they are independently required for distinct aspects of chromosome segregation. Thus, SOGA1 and SOGA2/MTCL1 are bona fide CLASP-interacting proteins during mitosis required for faithful chromosome segregation in human cells.
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7
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Fourriere L, Jimenez AJ, Perez F, Boncompain G. The role of microtubules in secretory protein transport. J Cell Sci 2020; 133:133/2/jcs237016. [PMID: 31996399 DOI: 10.1242/jcs.237016] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Microtubules are part of the dynamic cytoskeleton network and composed of tubulin dimers. They are the main tracks used in cells to organize organelle positioning and trafficking of cargos. In this Review, we compile recent findings on the involvement of microtubules in anterograde protein transport. First, we highlight the importance of microtubules in organelle positioning. Second, we discuss the involvement of microtubules within different trafficking steps, in particular between the endoplasmic reticulum and the Golgi complex, traffic through the Golgi complex itself and in post-Golgi processes. A large number of studies have assessed the involvement of microtubules in transport of cargo from the Golgi complex to the cell surface. We focus here on the role of kinesin motor proteins and protein interactions in post-Golgi transport, as well as the impact of tubulin post-translational modifications. Last, in light of recent findings, we highlight the role microtubules have in exocytosis, the final step of secretory protein transport, occurring close to focal adhesions.
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Affiliation(s)
- Lou Fourriere
- Dynamics of Intracellular Organization Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Sorbonne Université, 75005 Paris, France
| | - Ana Joaquina Jimenez
- Dynamics of Intracellular Organization Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Sorbonne Université, 75005 Paris, France
| | - Franck Perez
- Dynamics of Intracellular Organization Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Sorbonne Université, 75005 Paris, France
| | - Gaelle Boncompain
- Dynamics of Intracellular Organization Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Sorbonne Université, 75005 Paris, France
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8
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Verma NK, Chalasani MLS, Scott JD, Kelleher D. CG-NAP/Kinase Interactions Fine-Tune T Cell Functions. Front Immunol 2019; 10:2642. [PMID: 31781123 PMCID: PMC6861388 DOI: 10.3389/fimmu.2019.02642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 10/24/2019] [Indexed: 01/04/2023] Open
Abstract
CG-NAP, also known as AKAP450, is an anchoring/adaptor protein that streamlines signal transduction in various cell types by localizing signaling proteins and enzymes with their substrates. Great efforts are being devoted to elucidating functional roles of this protein and associated macromolecular signaling complex. Increasing understanding of pathways involved in regulating T lymphocytes suggests that CG-NAP can facilitate dynamic interactions between kinases and their substrates and thus fine-tune T cell motility and effector functions. As a result, new binding partners of CG-NAP are continually being uncovered. Here, we review recent advances in CG-NAP research, focusing on its interactions with kinases in T cells with an emphasis on the possible role of this anchoring protein as a target for therapeutic intervention in immune-mediated diseases.
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Affiliation(s)
- Navin Kumar Verma
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore, Singapore
| | | | - John D Scott
- Department of Pharmacology, University of Washington School of Medicine, Seattle, WA, United States
| | - Dermot Kelleher
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore, Singapore.,Departments of Medicine and Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
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9
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Ravichandran Y, Goud B, Manneville JB. The Golgi apparatus and cell polarity: Roles of the cytoskeleton, the Golgi matrix, and Golgi membranes. Curr Opin Cell Biol 2019; 62:104-113. [PMID: 31751898 DOI: 10.1016/j.ceb.2019.10.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/02/2019] [Accepted: 10/14/2019] [Indexed: 12/15/2022]
Abstract
Membrane trafficking plays a crucial role in cell polarity by directing lipids and proteins to specific subcellular locations in the cell and sustaining a polarized state. The Golgi apparatus, the master organizer of membrane trafficking, can be subdivided into three layers that play different mechanical roles: a cytoskeletal layer, the so-called Golgi matrix, and the Golgi membranes. First, the outer regions of the Golgi apparatus interact with cytoskeletal elements, mainly actin and microtubules, which shape, position, and orient the organelle. Closer to the Golgi membranes, a matrix of long coiled-coiled proteins not only selectively captures transport intermediates but also participates in signaling events during polarization of membrane trafficking. Finally, the Golgi membranes themselves serve as active signaling platforms during cell polarity events. We review here the recent findings that link the Golgi apparatus to cell polarity, focusing on the roles of the cytoskeleton, the Golgi matrix, and the Golgi membranes.
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Affiliation(s)
- Yamini Ravichandran
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm F-75005, Paris, France; Sorbonne Université, UPMC University Paris 06, CNRS, UMR 144, 26 rue d'Ulm F-75005, Paris, France; Institut Pasteur, CNRS, UMR 3691, 25 rue du Docteur Roux F-75014, Paris, France
| | - Bruno Goud
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm F-75005, Paris, France; Sorbonne Université, UPMC University Paris 06, CNRS, UMR 144, 26 rue d'Ulm F-75005, Paris, France
| | - Jean-Baptiste Manneville
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm F-75005, Paris, France; Sorbonne Université, UPMC University Paris 06, CNRS, UMR 144, 26 rue d'Ulm F-75005, Paris, France.
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10
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Gavilan MP, Gandolfo P, Balestra FR, Arias F, Bornens M, Rios RM. The dual role of the centrosome in organizing the microtubule network in interphase. EMBO Rep 2018; 19:embr.201845942. [PMID: 30224411 DOI: 10.15252/embr.201845942] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 11/09/2022] Open
Abstract
Here, we address the regulation of microtubule nucleation during interphase by genetically ablating one, or two, of three major mammalian γ-TuRC-binding factors namely pericentrin, CDK5Rap2, and AKAP450. Unexpectedly, we find that while all of them participate in microtubule nucleation at the Golgi apparatus, they only modestly contribute at the centrosome where CEP192 has a more predominant function. We also show that inhibiting microtubule nucleation at the Golgi does not affect centrosomal activity, whereas manipulating the number of centrosomes with centrinone modifies microtubule nucleation activity of the Golgi apparatus. In centrosome-free cells, inhibition of Golgi-based microtubule nucleation triggers pericentrin-dependent formation of cytoplasmic-nucleating structures. Further depletion of pericentrin under these conditions leads to the generation of individual microtubules in a γ-tubulin-dependent manner. In all cases, a conspicuous MT network forms. Strikingly, centrosome loss increases microtubule number independently of where they were growing from. Our results lead to an unexpected view of the interphase centrosome that would control microtubule network organization not only by nucleating microtubules, but also by modulating the activity of alternative microtubule-organizing centers.
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Affiliation(s)
- Maria P Gavilan
- Centro Andaluz de Biología Molecular y Medicina Regenerativa CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Pablo Gandolfo
- Centro Andaluz de Biología Molecular y Medicina Regenerativa CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Fernando R Balestra
- Centro Andaluz de Biología Molecular y Medicina Regenerativa CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Francisco Arias
- Centro Andaluz de Biología Molecular y Medicina Regenerativa CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | | | - Rosa M Rios
- Centro Andaluz de Biología Molecular y Medicina Regenerativa CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
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11
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Zulkipli I, Clark J, Hart M, Shrestha RL, Gul P, Dang D, Kasichiwin T, Kujawiak I, Sastry N, Draviam VM. Spindle rotation in human cells is reliant on a MARK2-mediated equatorial spindle-centering mechanism. J Cell Biol 2018; 217:3057-3070. [PMID: 29941476 PMCID: PMC6122980 DOI: 10.1083/jcb.201804166] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/18/2018] [Accepted: 05/24/2018] [Indexed: 12/11/2022] Open
Abstract
Unlike man-made wheels that are centered and rotated via an axle, the mitotic spindle of a human cell is rotated by external cortical pulling mechanisms. Zulkipli et al. identify MARK2’s role in equatorial spindle centering and astral microtubule length, which in turn control spindle rotation. The plane of cell division is defined by the final position of the mitotic spindle. The spindle is pulled and rotated to the correct position by cortical dynein. However, it is unclear how the spindle’s rotational center is maintained and what the consequences of an equatorially off centered spindle are in human cells. We analyzed spindle movements in 100s of cells exposed to protein depletions or drug treatments and uncovered a novel role for MARK2 in maintaining the spindle at the cell’s geometric center. Following MARK2 depletion, spindles glide along the cell cortex, leading to a failure in identifying the correct division plane. Surprisingly, spindle off centering in MARK2-depleted cells is not caused by excessive pull by dynein. We show that MARK2 modulates mitotic microtubule growth and length and that codepleting mitotic centromere-associated protein (MCAK), a microtubule destabilizer, rescues spindle off centering in MARK2-depleted cells. Thus, we provide the first insight into a spindle-centering mechanism needed for proper spindle rotation and, in turn, the correct division plane in human cells.
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Affiliation(s)
- Ihsan Zulkipli
- Department of Genetics, University of Cambridge, Cambridge, England, UK
| | - Joanna Clark
- Department of Genetics, University of Cambridge, Cambridge, England, UK
| | - Madeleine Hart
- School of Biological and Chemical Sciences, Queen Mary University of London, London, England, UK
| | - Roshan L Shrestha
- Department of Genetics, University of Cambridge, Cambridge, England, UK
| | - Parveen Gul
- School of Biological and Chemical Sciences, Queen Mary University of London, London, England, UK
| | - David Dang
- School of Biological and Chemical Sciences, Queen Mary University of London, London, England, UK.,Department of Informatics, King's College, London, England, UK
| | - Tami Kasichiwin
- School of Biological and Chemical Sciences, Queen Mary University of London, London, England, UK
| | - Izabela Kujawiak
- Department of Genetics, University of Cambridge, Cambridge, England, UK
| | - Nishanth Sastry
- Department of Informatics, King's College, London, England, UK
| | - Viji M Draviam
- School of Biological and Chemical Sciences, Queen Mary University of London, London, England, UK .,Department of Genetics, University of Cambridge, Cambridge, England, UK
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12
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Coming into Focus: Mechanisms of Microtubule Minus-End Organization. Trends Cell Biol 2018; 28:574-588. [PMID: 29571882 DOI: 10.1016/j.tcb.2018.02.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 02/17/2018] [Accepted: 02/27/2018] [Indexed: 11/22/2022]
Abstract
Microtubule organization has a crucial role in regulating cell architecture. The geometry of microtubule arrays strongly depends on the distribution of sites responsible for microtubule nucleation and minus-end attachment. In cycling animal cells, the centrosome often represents a dominant microtubule-organizing center (MTOC). However, even in cells with a radial microtubule system, many microtubules are not anchored at the centrosome, but are instead linked to the Golgi apparatus or other structures. Non-centrosomal microtubules predominate in many types of differentiated cell and in mitotic spindles. In this review, we discuss recent advances in understanding how the organization of centrosomal and non-centrosomal microtubule networks is controlled by proteins involved in microtubule nucleation and specific factors that recognize free microtubule minus ends and regulate their localization and dynamics.
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13
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Sanders AAWM, Chang K, Zhu X, Thoppil RJ, Holmes WR, Kaverina I. Nonrandom γ-TuNA-dependent spatial pattern of microtubule nucleation at the Golgi. Mol Biol Cell 2017; 28:3181-3192. [PMID: 28931596 PMCID: PMC5687021 DOI: 10.1091/mbc.e17-06-0425] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/05/2017] [Accepted: 09/13/2017] [Indexed: 01/12/2023] Open
Abstract
Noncentrosomal microtubule (MT) nucleation at the Golgi generates MT network asymmetry in motile vertebrate cells. Investigating the Golgi-derived MT (GDMT) distribution, we find that MT asymmetry arises from nonrandom nucleation sites at the Golgi (hotspots). Using computational simulations, we propose two plausible mechanistic models of GDMT nucleation leading to this phenotype. In the "cooperativity" model, formation of a single GDMT promotes further nucleation at the same site. In the "heterogeneous Golgi" model, MT nucleation is dramatically up-regulated at discrete and sparse locations within the Golgi. While MT clustering in hotspots is equally well described by both models, simulating MT length distributions within the cooperativity model fits the data better. Investigating the molecular mechanism underlying hotspot formation, we have found that hotspots are significantly smaller than a Golgi subdomain positive for scaffolding protein AKAP450, which is thought to recruit GDMT nucleation factors. We have further probed potential roles of known GDMT-promoting molecules, including γ-TuRC-mediated nucleation activator (γ-TuNA) domain-containing proteins and MT stabilizer CLASPs. While both γ-TuNA inhibition and lack of CLASPs resulted in drastically decreased GDMT nucleation, computational modeling revealed that only γ-TuNA inhibition suppressed hotspot formation. We conclude that hotspots require γ-TuNA activity, which facilitates clustered GDMT nucleation at distinct Golgi sites.
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Affiliation(s)
- Anna A W M Sanders
- Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37240
| | - Kevin Chang
- Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37240
| | - Xiaodong Zhu
- Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37240
| | - Roslin J Thoppil
- Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37240
| | - William R Holmes
- Physics and Astronomy, Vanderbilt University, Nashville, TN 37240
| | - Irina Kaverina
- Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37240
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14
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Yang C, Wu J, de Heus C, Grigoriev I, Liv N, Yao Y, Smal I, Meijering E, Klumperman J, Qi RZ, Akhmanova A. EB1 and EB3 regulate microtubule minus end organization and Golgi morphology. J Cell Biol 2017; 216:3179-3198. [PMID: 28814570 PMCID: PMC5626540 DOI: 10.1083/jcb.201701024] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 06/08/2017] [Accepted: 07/18/2017] [Indexed: 12/19/2022] Open
Abstract
End-binding proteins regulate the dynamics and function of microtubule plus ends by recruiting a plethora of diverse factors. Yang et al. show that EB1 and EB3 also affect microtubule minus ends by participating in their attachment to Golgi membranes. This function is important for cell polarity and migration. End-binding proteins (EBs) are the core components of microtubule plus end tracking protein complexes, but it is currently unknown whether they are essential for mammalian microtubule organization. Here, by using CRISPR/Cas9-mediated knockout technology, we generated stable cell lines lacking EB2 and EB3 and the C-terminal partner-binding half of EB1. These cell lines show only mild defects in cell division and microtubule polymerization. However, the length of CAMSAP2-decorated stretches at noncentrosomal microtubule minus ends in these cells is reduced, microtubules are detached from Golgi membranes, and the Golgi complex is more compact. Coorganization of microtubules and Golgi membranes depends on the EB1/EB3–myomegalin complex, which acts as membrane–microtubule tether and counteracts tight clustering of individual Golgi stacks. Disruption of EB1 and EB3 also perturbs cell migration, polarity, and the distribution of focal adhesions. EB1 and EB3 thus affect multiple interphase processes and have a major impact on microtubule minus end organization.
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Affiliation(s)
- Chao Yang
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Jingchao Wu
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Cecilia de Heus
- Department of Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Ilya Grigoriev
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Nalan Liv
- Department of Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Yao Yao
- Department of Medical Informatics, Biomedical Imaging Group Rotterdam, Erasmus University Medical Center, Rotterdam, Netherlands.,Department of Radiology, Biomedical Imaging Group Rotterdam, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Ihor Smal
- Department of Medical Informatics, Biomedical Imaging Group Rotterdam, Erasmus University Medical Center, Rotterdam, Netherlands.,Department of Radiology, Biomedical Imaging Group Rotterdam, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Erik Meijering
- Department of Medical Informatics, Biomedical Imaging Group Rotterdam, Erasmus University Medical Center, Rotterdam, Netherlands.,Department of Radiology, Biomedical Imaging Group Rotterdam, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Judith Klumperman
- Department of Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Robert Z Qi
- Division of Life Science, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | - Anna Akhmanova
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
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15
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Kader MA, Satake T, Yoshida M, Hayashi I, Suzuki A. Molecular basis of the microtubule-regulating activity of microtubule crosslinking factor 1. PLoS One 2017; 12:e0182641. [PMID: 28787032 PMCID: PMC5546597 DOI: 10.1371/journal.pone.0182641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 07/22/2017] [Indexed: 02/07/2023] Open
Abstract
The variety of microtubule arrays observed across different cell types should require a diverse group of proteins that control microtubule organization. Nevertheless, mainly because of the intrinsic propensity of microtubules to easily form bundles upon stabilization, only a small number of microtubule crosslinking proteins have been identified, especially in postmitotic cells. Among them is microtubule crosslinking factor 1 (MTCL1) that not only interconnects microtubules via its N-terminal microtubule-binding domain (N-MTBD), but also stabilizes microtubules via its C-terminal microtubule-binding domain (C-MTBD). Here, we comprehensively analyzed the assembly structure of MTCL1 to elucidate the molecular basis of this dual activity in microtubule regulation. Our results indicate that MTCL1 forms a parallel dimer not only through multiple homo-interactions of the central coiled-coil motifs, but also the most C-terminal non-coiled-coil region immediately downstream of the C-MTBD. Among these homo-interaction regions, the first coiled-coil motif adjacent to N-MTBD is sufficient for the MTCL1 function to crosslink microtubules without affecting the dynamic property, and disruption of this motif drastically transformed MTCL1-induced microtubule assembly from tight to network-like bundles. Notably, suppression of the homo-interaction of this motif inhibited the endogenous MTCL1 function to stabilize Golgi-associated microtubules that are essential for Golgi-ribbon formation. Because the microtubule-stabilizing activity of MTCL1 is completely attributed to C-MTBD, the present study suggests possible interplay between N-MTBD and C-MTBD, in which normal crosslinking and accumulation of microtubules by N-MTBD is essential for microtubule stabilization by C-MTBD.
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Affiliation(s)
- Mohammad Abdul Kader
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku, Yokohama, Japan
| | - Tomoko Satake
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku, Yokohama, Japan
| | - Masatoshi Yoshida
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku, Yokohama, Japan
| | - Ikuko Hayashi
- Molecular Medical Bioscience Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku, Yokohama, Japan
| | - Atsushi Suzuki
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku, Yokohama, Japan
- * E-mail:
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16
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Jiang P, Li Y, Poleshko A, Medvedeva V, Baulina N, Zhang Y, Zhou Y, Slater CM, Pellegrin T, Wasserman J, Lindy M, Efimov A, Daly M, Katz RA, Chen X. The Protein Encoded by the CCDC170 Breast Cancer Gene Functions to Organize the Golgi-Microtubule Network. EBioMedicine 2017; 22:28-43. [PMID: 28687497 PMCID: PMC5552109 DOI: 10.1016/j.ebiom.2017.06.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/23/2017] [Accepted: 06/23/2017] [Indexed: 12/17/2022] Open
Abstract
Genome-Wide Association Studies (GWAS) and subsequent fine-mapping studies (>50) have implicated single nucleotide polymorphisms (SNPs) located at the CCDC170/C6ORF97-ESR1 locus (6q25.1) as being associated with the risk of breast cancer. Surprisingly, our analysis using genome-wide differential allele-specific expression (DASE), an indicator for breast cancer susceptibility, suggested that the genetic alterations of CCDC170, but not ESR1, account for GWAS-associated breast cancer risk at this locus. Breast cancer-associated CCDC170 nonsense mutations and rearrangements have also been detected, with the latter being specifically implicated in driving breast cancer. Here we report that the wild type CCDC170 protein localizes to the region of the Golgi apparatus and binds Golgi-associated microtubules (MTs), and that breast cancer-linked truncations of CCDC170 result in loss of Golgi localization. Overexpression of wild type CCDC170 triggers Golgi reorganization, and enhances Golgi-associated MT stabilization and acetyltransferase ATAT1-dependent α-tubulin acetylation. Golgi-derived MTs regulate cellular polarity and motility, and we provide evidence that dysregulation of CCDC170 affects polarized cell migration. Taken together, our findings demonstrate that CCDC170 plays an essential role in Golgi-associated MT organization and stabilization, and implicate a mechanism for how perturbations in the CCDC170 gene may contribute to the hallmark changes in cell polarity and motility seen in breast cancer.
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Affiliation(s)
- Pengtao Jiang
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Yueran Li
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Andrey Poleshko
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Valentina Medvedeva
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Natalia Baulina
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Yongchao Zhang
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Yan Zhou
- Department of Biostatistics and Bioinformatics, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Carolyn M Slater
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Trinity Pellegrin
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Jason Wasserman
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Michael Lindy
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Andrey Efimov
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Mary Daly
- Department of Clinical Genetics, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Richard A Katz
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
| | - Xiaowei Chen
- Cancer Epigenetics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, United States.
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17
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Hyodo T, Ito S, Asano-Inami E, Chen D, Senga T. A regulatory subunit of protein phosphatase 2A, PPP2R5E, regulates the abundance of microtubule crosslinking factor 1. FEBS J 2017; 283:3662-3671. [PMID: 27521566 DOI: 10.1111/febs.13835] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 07/24/2016] [Accepted: 08/12/2016] [Indexed: 12/22/2022]
Abstract
Dynamic changes in microtubule organization are regulated by numerous microtubule-associating proteins and their post-translational modification. Microtubule crosslinking factor 1 (MTCL1) is a recently identified protein that regulates microtubule organization. To obtain further insight into its functions, we searched for proteins that associate with it using mass spectrometry analysis. We found that PPP2R5E, a regulatory subunit of protein phosphatase 2A, interacted with MTCL1. Depletion of PPP2R5E reduced the abundance of MTCL1 abundance, whereas exogenous expression of PPP2R5E increased endogenous MTCL1. Furthermore, inhibition of phosphatase activity by okadaic acid reduced MTCL1, which was restored by the addition of the protease inhibitor MG132. Finally, we show that cells depleted of PPP2R5E and MTCL1 exhibited defects in microtubule organization. Our results suggest that the PPP2R5E phosphatase may contribute to microtubule organization by stabilizing MTCL1.
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Affiliation(s)
- Toshinori Hyodo
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Japan
| | - Satoko Ito
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Japan
| | - Eri Asano-Inami
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Japan.,Department of Obstetrics and Gynecology Collaborative Research, Bell Research Center, Nagoya University Graduate School of Medicine, Japan
| | - Dan Chen
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Japan
| | - Takeshi Senga
- Division of Cancer Biology, Nagoya University Graduate School of Medicine, Japan.
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18
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Abstract
The organization of microtubule networks is crucial for controlling chromosome segregation during cell division, for positioning and transport of different organelles, and for cell polarity and morphogenesis. The geometry of microtubule arrays strongly depends on the localization and activity of the sites where microtubules are nucleated and where their minus ends are anchored. Such sites are often clustered into structures known as microtubule-organizing centers, which include the centrosomes in animals and spindle pole bodies in fungi. In addition, other microtubules, as well as membrane compartments such as the cell nucleus, the Golgi apparatus, and the cell cortex, can nucleate, stabilize, and tether microtubule minus ends. These activities depend on microtubule-nucleating factors, such as γ-tubulin-containing complexes and their activators and receptors, and microtubule minus end-stabilizing proteins with their binding partners. Here, we provide an overview of the current knowledge on how such factors work together to control microtubule organization in different systems.
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Affiliation(s)
- Jingchao Wu
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 Utrecht, The Netherlands; ,
| | - Anna Akhmanova
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 Utrecht, The Netherlands; ,
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19
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Kruse R, Krantz J, Barker N, Coletta RL, Rafikov R, Luo M, Højlund K, Mandarino LJ, Langlais PR. Characterization of the CLASP2 Protein Interaction Network Identifies SOGA1 as a Microtubule-Associated Protein. Mol Cell Proteomics 2017; 16:1718-1735. [PMID: 28550165 DOI: 10.1074/mcp.ra117.000011] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Indexed: 12/26/2022] Open
Abstract
CLASP2 is a microtubule-associated protein that undergoes insulin-stimulated phosphorylation and co-localization with reorganized actin and GLUT4 at the plasma membrane. To gain insight to the role of CLASP2 in this system, we developed and successfully executed a streamlined interactome approach and built a CLASP2 protein network in 3T3-L1 adipocytes. Using two different commercially available antibodies for CLASP2 and an antibody for epitope-tagged, overexpressed CLASP2, we performed multiple affinity purification coupled with mass spectrometry (AP-MS) experiments in combination with label-free quantitative proteomics and analyzed the data with the bioinformatics tool Significance Analysis of Interactome (SAINT). We discovered that CLASP2 coimmunoprecipitates (co-IPs) the novel protein SOGA1, the microtubule-associated protein kinase MARK2, and the microtubule/actin-regulating protein G2L1. The GTPase-activating proteins AGAP1 and AGAP3 were also enriched in the CLASP2 interactome, although subsequent AGAP3 and CLIP2 interactome analysis suggests a preference of AGAP3 for CLIP2. Follow-up MARK2 interactome analysis confirmed reciprocal co-IP of CLASP2 and revealed MARK2 can co-IP SOGA1, glycogen synthase, and glycogenin. Investigating the SOGA1 interactome confirmed SOGA1 can reciprocal co-IP both CLASP2 and MARK2 as well as glycogen synthase and glycogenin. SOGA1 was confirmed to colocalize with CLASP2 and with tubulin, which identifies SOGA1 as a new microtubule-associated protein. These results introduce the metabolic function of these proposed novel protein networks and their relationship with microtubules as new fields of cytoskeleton-associated protein biology.
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Affiliation(s)
- Rikke Kruse
- From the ‡The Section of Molecular Diabetes & Metabolism, Department of Clinical Research and Institute of Molecular Medicine, University of Southern Denmark, DK-5000 Odense, Denmark.,§Department of Endocrinology, Odense University Hospital, DK-5000 Odense, Denmark
| | - James Krantz
- ¶Department of Medicine, Division of Endocrinology, University of Arizona College of Medicine, Tucson, Arizona 85721
| | - Natalie Barker
- ¶Department of Medicine, Division of Endocrinology, University of Arizona College of Medicine, Tucson, Arizona 85721
| | - Richard L Coletta
- ‖School of Life Sciences, Arizona State University, Tempe, Arizona 85787
| | - Ruslan Rafikov
- ¶Department of Medicine, Division of Endocrinology, University of Arizona College of Medicine, Tucson, Arizona 85721
| | - Moulun Luo
- ¶Department of Medicine, Division of Endocrinology, University of Arizona College of Medicine, Tucson, Arizona 85721
| | - Kurt Højlund
- From the ‡The Section of Molecular Diabetes & Metabolism, Department of Clinical Research and Institute of Molecular Medicine, University of Southern Denmark, DK-5000 Odense, Denmark.,§Department of Endocrinology, Odense University Hospital, DK-5000 Odense, Denmark
| | - Lawrence J Mandarino
- ¶Department of Medicine, Division of Endocrinology, University of Arizona College of Medicine, Tucson, Arizona 85721
| | - Paul R Langlais
- ¶Department of Medicine, Division of Endocrinology, University of Arizona College of Medicine, Tucson, Arizona 85721;
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20
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Wei JH, Seemann J. Golgi ribbon disassembly during mitosis, differentiation and disease progression. Curr Opin Cell Biol 2017; 47:43-51. [PMID: 28390244 DOI: 10.1016/j.ceb.2017.03.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 11/16/2022]
Abstract
The Golgi apparatus is tightly integrated into the cellular system where it plays essential roles required for a variety of cellular processes. Its vital functions include not only processing and sorting of proteins and lipids, but also serving as a signaling hub and a microtubule-organizing center. Golgi stacks in mammalian cells are interconnected into a compact ribbon in the perinuclear region. However, the ribbon can undergo distinct disassembly processes that reflect the cellular state or environmental demands and stress. For instance, its most dramatic change takes place in mitosis when the ribbon is efficiently disassembled into vesicles through a combination of ribbon unlinking, cisternal unstacking and vesiculation. Furthermore, the ribbon can also be detached and positioned at specific cellular locations to gain additional functionalities during differentiation, or fragmented to different degrees along disease progression or upon cell death. Here, we describe the major morphological alterations of Golgi ribbon disassembly under physiological and pathological conditions and discuss the underlying mechanisms that drive these changes.
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Affiliation(s)
- Jen-Hsuan Wei
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.
| | - Joachim Seemann
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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21
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Nishita M, Satake T, Minami Y, Suzuki A. Regulatory mechanisms and cellular functions of non-centrosomal microtubules. J Biochem 2017; 162:1-10. [DOI: 10.1093/jb/mvx018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 03/02/2017] [Indexed: 02/07/2023] Open
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22
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Satake T, Yamashita K, Hayashi K, Miyatake S, Tamura-Nakano M, Doi H, Furuta Y, Shioi G, Miura E, Takeo YH, Yoshida K, Yahikozawa H, Matsumoto N, Yuzaki M, Suzuki A. MTCL1 plays an essential role in maintaining Purkinje neuron axon initial segment. EMBO J 2017; 36:1227-1242. [PMID: 28283581 DOI: 10.15252/embj.201695630] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 02/07/2017] [Accepted: 02/10/2017] [Indexed: 11/09/2022] Open
Abstract
The axon initial segment (AIS) is a specialized domain essential for neuronal function, the formation of which begins with localization of an ankyrin-G (AnkG) scaffold. However, the mechanism directing and maintaining AnkG localization is largely unknown. In this study, we demonstrate that in vivo knockdown of microtubule cross-linking factor 1 (MTCL1) in cerebellar Purkinje cells causes loss of axonal polarity coupled with AnkG mislocalization. MTCL1 lacking MT-stabilizing activity failed to restore these defects, and stable MT bundles spanning the AIS were disorganized in knockdown cells. Interestingly, during early postnatal development, colocalization of MTCL1 with these stable MT bundles was observed prominently in the axon hillock and proximal axon. These results indicate that MTCL1-mediated formation of stable MT bundles is crucial for maintenance of AnkG localization. We also demonstrate that Mtcl1 gene disruption results in abnormal motor coordination with Purkinje cell degeneration, and provide evidence suggesting possible involvement of MTCL1 dysfunction in the pathogenesis of spinocerebellar ataxia.
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Affiliation(s)
- Tomoko Satake
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku Yokohama, Japan
| | - Kazunari Yamashita
- Department of Molecular Biology, Yokohama City University Graduate School of Medical Science, Kanazawa-ku Yokohama, Japan
| | - Kenji Hayashi
- Department of Molecular Biology, Yokohama City University Graduate School of Medical Science, Kanazawa-ku Yokohama, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medical Science, Kanazawa-ku Yokohama, Japan
| | - Miwa Tamura-Nakano
- Communal Laboratory, Research Institute, National Center for Global Health and Medicine, Toyama Shinjuku-ku Tokyo, Japan
| | - Hiroshi Doi
- Department of Neurology, Yokohama City University Graduate School of Medical Science, Kanazawa-ku Yokohama, Japan
| | - Yasuhide Furuta
- Animal Resource Development Unit, RIKEN Center for Life Science Technologies, Chuou-ku Kobe, Japan.,Genetic Engineering Team, RIKEN Center for Life Science Technologies, Chuou-ku Kobe, Japan
| | - Go Shioi
- Genetic Engineering Team, RIKEN Center for Life Science Technologies, Chuou-ku Kobe, Japan
| | - Eriko Miura
- Department of Physiology, School of Medicine, Keio University, Shinjuku-ku Tokyo, Japan
| | - Yukari H Takeo
- Department of Physiology, School of Medicine, Keio University, Shinjuku-ku Tokyo, Japan
| | - Kunihiro Yoshida
- Division of Neurogenetics, Department of Brain Disease Research, Shinshu University School of Medicine, Asahi Matsumoto, Japan
| | | | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medical Science, Kanazawa-ku Yokohama, Japan
| | - Michisuke Yuzaki
- Department of Physiology, School of Medicine, Keio University, Shinjuku-ku Tokyo, Japan
| | - Atsushi Suzuki
- Molecular Cellular Biology Laboratory, Yokohama City University Graduate School of Medical Life Science, Tsurumi-ku Yokohama, Japan
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23
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Hobbs BD, de Jong K, Lamontagne M, Bossé Y, Shrine N, Artigas MS, Wain LV, Hall IP, Jackson VE, Wyss AB, London SJ, North KE, Franceschini N, Strachan DP, Beaty TH, Hokanson JE, Crapo JD, Castaldi PJ, Chase RP, Bartz TM, Heckbert SR, Psaty BM, Gharib SA, Zanen P, Lammers JW, Oudkerk M, Groen HJ, Locantore N, Tal-Singer R, Rennard SI, Vestbo J, Timens W, Paré PD, Latourelle JC, Dupuis J, O’Connor GT, Wilk JB, Kim WJ, Lee MK, Oh YM, Vonk JM, de Koning HJ, Leng S, Belinsky SA, Tesfaigzi Y, Manichaikul A, Wang XQ, Rich SS, Barr RG, Sparrow D, Litonjua AA, Bakke P, Gulsvik A, Lahousse L, Brusselle GG, Stricker BH, Uitterlinden AG, Ampleford EJ, Bleecker ER, Woodruff PG, Meyers DA, Qiao D, Lomas DA, Yim JJ, Kim DK, Hawrylkiewicz I, Sliwinski P, Hardin M, Fingerlin TE, Schwartz DA, Postma DS, MacNee W, Tobin MD, Silverman EK, Boezen HM, Cho MH. Genetic loci associated with chronic obstructive pulmonary disease overlap with loci for lung function and pulmonary fibrosis. Nat Genet 2017; 49:426-432. [PMID: 28166215 PMCID: PMC5381275 DOI: 10.1038/ng.3752] [Citation(s) in RCA: 249] [Impact Index Per Article: 35.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 11/23/2016] [Indexed: 12/15/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of mortality worldwide. We performed a genetic association study in 15,256 cases and 47,936 controls, with replication of select top results (P < 5 × 10-6) in 9,498 cases and 9,748 controls. In the combined meta-analysis, we identified 22 loci associated at genome-wide significance, including 13 new associations with COPD. Nine of these 13 loci have been associated with lung function in general population samples, while 4 (EEFSEC, DSP, MTCL1, and SFTPD) are new. We noted two loci shared with pulmonary fibrosis (FAM13A and DSP) but that had opposite risk alleles for COPD. None of our loci overlapped with genome-wide associations for asthma, although one locus has been implicated in joint susceptibility to asthma and obesity. We also identified genetic correlation between COPD and asthma. Our findings highlight new loci associated with COPD, demonstrate the importance of specific loci associated with lung function to COPD, and identify potential regions of genetic overlap between COPD and other respiratory diseases.
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Affiliation(s)
- Brian D. Hobbs
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Kim de Jong
- University of Groningen, University Medical Center Groningen,
Department of Epidemiology, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
| | - Maxime Lamontagne
- Institut universitaire de cardiologie et de pneumologie de
Québec, Québec, Canada
| | - Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de
Québec, Québec, Canada
- Department of Molecular Medicine, Laval University, Québec,
Canada
| | - Nick Shrine
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - María Soler Artigas
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - Louise V. Wain
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - Ian P. Hall
- Division of Respiratory Medicine, Queen’s Medical Centre,
University of Nottingham, Nottingham, UK
| | - Victoria E. Jackson
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
| | - Annah B. Wyss
- Epidemiology Branch, National Institute of Environmental Health
Sciences, National Institutes of Health, Department of Health and Human Services,
Research Triangle Park, NC, USA
| | - Stephanie J. London
- Epidemiology Branch, National Institute of Environmental Health
Sciences, National Institutes of Health, Department of Health and Human Services,
Research Triangle Park, NC, USA
| | - Kari E. North
- Department of Epidemiology, University of North Carolina, Chapel
Hill, NC, USA
| | - Nora Franceschini
- Department of Epidemiology, University of North Carolina, Chapel
Hill, NC, USA
| | - David P. Strachan
- Population Health Research Institute, St. George’s,
University of London, London, UK
| | - Terri H. Beaty
- Johns Hopkins University Bloomberg School of Public Health,
Baltimore, MD, USA
| | - John E. Hokanson
- Department of Epidemiology, University of Colorado Anschutz Medical
Campus, Aurora, CO, USA
| | - James D. Crapo
- Department of Medicine, Division of Pulmonary and Critical Care
Medicine, National Jewish Health, Denver, CO, USA
| | - Peter J. Castaldi
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
- Division of General Internal Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
| | - Robert P. Chase
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
| | - Traci M. Bartz
- Cardiovascular Health Research Unit, University of Washington,
Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA,
USA
- Department of Biostatistics, University of Washington, Seattle, WA,
USA
| | - Susan R. Heckbert
- Cardiovascular Health Research Unit, University of Washington,
Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA,
USA
- Group Health Research Institute, Group Health Cooperative, Seattle,
WA, USA
| | - Bruce M. Psaty
- Cardiovascular Health Research Unit, University of Washington,
Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA,
USA
- Department of Epidemiology, University of Washington, Seattle, WA,
USA
- Group Health Research Institute, Group Health Cooperative, Seattle,
WA, USA
- Department of Health Services, University of Washington, Seattle,
WA, USA
| | - Sina A. Gharib
- Computational Medicine Core, Center for Lung Biology, UW Medicine
Sleep Center, Department of Medicine, University of Washington, Seattle, WA,
USA
| | - Pieter Zanen
- Department of Pulmonology, University Medical Center Utrecht,
University of Utrecht, Utrecht, the Netherlands
| | - Jan W. Lammers
- Department of Pulmonology, University Medical Center Utrecht,
University of Utrecht, Utrecht, the Netherlands
| | - Matthijs Oudkerk
- University of Groningen, University Medical Center Groningen,
Center for Medical Imaging, the Netherlands
| | - H. J. Groen
- University of Groningen, University Medical Center Groningen,
Department of Pulmonology, Groningen, the Netherlands
| | | | | | - Stephen I. Rennard
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of
Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Clinical Discovery Unit, AstraZeneca, Cambridge, UK
| | - Jørgen Vestbo
- School of Biological Sciences, University of Manchester,
Manchester, UK
| | - Wim Timens
- Department of Pathology and Medical Biology, University of
Groningen, University Medical Center Groningen, GRIAC Research Institute, Groningen,
the Netherlands
| | - Peter D. Paré
- University of British Columbia Center for Heart Lung Innovation and
Institute for Heart and Lung Health, St Paul’s Hospital, Vancouver, British
Columbia, Canada
| | | | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public
Health, Boston, MA, USA
- The National Heart, Lung, and Blood Institute’s Framingham
Heart Study, Framingham, MA, USA
| | - George T. O’Connor
- The National Heart, Lung, and Blood Institute’s Framingham
Heart Study, Framingham, MA, USA
- Pulmonary Center, Department of Medicine, Boston University School
of Medicine, Boston, MA, USA
| | - Jemma B. Wilk
- The National Heart, Lung, and Blood Institute’s Framingham
Heart Study, Framingham, MA, USA
| | - Woo Jin Kim
- Department of Internal Medicine and Environmental Health Center,
School of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Mi Kyeong Lee
- Department of Internal Medicine and Environmental Health Center,
School of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Yeon-Mok Oh
- Department of Pulmonary and Critical Care Medicine, and Clinical
Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center,
University of Ulsan College of Medicine, Seoul, South Korea
| | - Judith M. Vonk
- University of Groningen, University Medical Center Groningen,
Department of Epidemiology, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
| | - Harry J. de Koning
- Department of Public Health, Erasmus Medical Center Rotterdam,
Rotterdam, the Netherlands
| | - Shuguang Leng
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | | | | | - Ani Manichaikul
- Center for Public Health Genomics, University of Virginia,
Charlottesville, VA, USA
- Department of Public Health Sciences, University of Virginia,
Charlottesville, VA, USA
| | - Xin-Qun Wang
- Department of Public Health Sciences, University of Virginia,
Charlottesville, VA, USA
| | - Stephen S. Rich
- Center for Public Health Genomics, University of Virginia,
Charlottesville, VA, USA
- Department of Public Health Sciences, University of Virginia,
Charlottesville, VA, USA
| | - R Graham Barr
- Department of Medicine, College of Physicians and Surgeons and
Department of Epidemiology, Mailman School of Public Health, Columbia University,
New York, NY, USA
| | - David Sparrow
- VA Boston Healthcare System and Department of Medicine, Boston
University School of Medicine, Boston, MA, USA
| | - Augusto A. Litonjua
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Per Bakke
- Department of Clinical Science, University of Bergen, Bergen,
Norway
| | - Amund Gulsvik
- Department of Clinical Science, University of Bergen, Bergen,
Norway
| | - Lies Lahousse
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands
- Department of Respiratory Medicine, Ghent University Hospital,
Ghent, Belgium
| | - Guy G. Brusselle
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands
- Department of Respiratory Medicine, Ghent University Hospital,
Ghent, Belgium
- Department of Respiratory Medicine, Erasmus Medical Center,
Rotterdam, the Netherlands
| | - Bruno H. Stricker
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands
- Netherlands Health Care Inspectorate, The Hague, the
Netherlands
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam,
the Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands
Consortium for Healthy Aging (NCHA), Leiden, the Netherlands
| | - André G. Uitterlinden
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the
Netherlands
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam,
the Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands
Consortium for Healthy Aging (NCHA), Leiden, the Netherlands
| | - Elizabeth J. Ampleford
- Center for Genomics and Personalized Medicine Research, Wake Forest
University School of Medicine, Winston Salem, NC, USA
| | - Eugene R. Bleecker
- Center for Genomics and Personalized Medicine Research, Wake Forest
University School of Medicine, Winston Salem, NC, USA
| | - Prescott G. Woodruff
- Cardiovascular Research Institute and the Department of Medicine,
Division of Pulmonary, Critical Care, Sleep, and Allergy, University of California
at San Francisco, San Francisco, CA, USA
| | - Deborah A. Meyers
- Center for Genomics and Personalized Medicine Research, Wake Forest
University School of Medicine, Winston Salem, NC, USA
| | - Dandi Qiao
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
| | | | - Jae-Joon Yim
- Division of Pulmonary and Critical Care Medicine, Department of
Internal Medicine, Seoul National University College of Medicine, Seoul, South
Korea
| | - Deog Kyeom Kim
- Seoul National University College of Medicine, SMG-SNU Boramae
Medical Center, Seoul, South Korea
| | - Iwona Hawrylkiewicz
- 2nd Department of Respiratory Medicine, Institute of Tuberculosis
and Lung Diseases, Warsaw, Poland
| | - Pawel Sliwinski
- 2nd Department of Respiratory Medicine, Institute of Tuberculosis
and Lung Diseases, Warsaw, Poland
| | - Megan Hardin
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
- Clinical Discovery Unit, AstraZeneca, Cambridge, UK
| | - Tasha E. Fingerlin
- Center for Genes, Environment and Health, National Jewish Health,
Denver, CO, USA
- Department of Biostatistics and Informatics, University of Colorado
Denver, Aurora, CO, USA
| | - David A. Schwartz
- Center for Genes, Environment and Health, National Jewish Health,
Denver, CO, USA
- Department of Medicine, School of Medicine, University of Colorado
Denver, Aurora, CO, USA
- Department of Immunology, School of Medicine, University of
Colorado Denver, Aurora, CO, USA
| | - Dirkje S. Postma
- University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
- University of Groningen, University Medical Center Groningen,
Department of Pulmonology, Groningen, the Netherlands
| | | | - Martin D. Tobin
- Genetic Epidemiology Group, Department of Health Sciences,
University of Leicester, Leicester, UK
- National Institute for Health Research (NIHR) Leicester Respiratory
Biomedical Research Unit, Glenfield Hospital, Leicester, UK
| | - Edwin K. Silverman
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - H. Marike Boezen
- University of Groningen, University Medical Center Groningen,
Department of Epidemiology, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen,
Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the
Netherlands
| | - Michael H. Cho
- Channing Division of Network Medicine, Brigham and Women’s
Hospital, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
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Wu J, de Heus C, Liu Q, Bouchet B, Noordstra I, Jiang K, Hua S, Martin M, Yang C, Grigoriev I, Katrukha E, Altelaar A, Hoogenraad C, Qi R, Klumperman J, Akhmanova A. Molecular Pathway of Microtubule Organization at the Golgi Apparatus. Dev Cell 2016; 39:44-60. [DOI: 10.1016/j.devcel.2016.08.009] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 05/23/2016] [Accepted: 08/21/2016] [Indexed: 10/21/2022]
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25
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Sanders AAWM, Kaverina I. Nucleation and Dynamics of Golgi-derived Microtubules. Front Neurosci 2015; 9:431. [PMID: 26617483 PMCID: PMC4639703 DOI: 10.3389/fnins.2015.00431] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 10/23/2015] [Indexed: 11/13/2022] Open
Abstract
Integrity of the Golgi apparatus requires the microtubule (MT) network. A subset of MTs originates at the Golgi itself, which in this case functions as a MT-organizing center (MTOC). Golgi-derived MTs serve important roles in post-Golgi trafficking, maintenance of Golgi integrity, cell polarity and motility, as well as cell type-specific functions, including neurite outgrowth/branching. Here, we discuss possible models describing the formation and dynamics of Golgi-derived MTs. How Golgi-derived MTs are formed is not fully understood. A widely discussed model implicates that the critical step of the process is recruitment of molecular factors, which drive MT nucleation (γ-tubulin ring complex, or γ-TuRC), to the Golgi membrane via specific scaffolding interactions. Based on recent findings, we propose to introduce an additional level of regulation, whereby MT-binding proteins and/or local tubulin dimer concentration at the Golgi helps to overcome kinetic barriers at the initial nucleation step. According to our model, emerging MTs are subsequently stabilized by Golgi-associated MT-stabilizing proteins. We discuss molecular factors potentially involved in all three steps of MT formation. To preserve proper cell functioning, a balance must be maintained between MT subsets at the centrosome and the Golgi. Recent work has shown that certain centrosomal factors are important in maintaining this balance, suggesting a close connection between regulation of centrosomal and Golgi-derived MTs. Finally, we will discuss potential functions of Golgi-derived MTs based on their nucleation site location within a Golgi stack.
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Affiliation(s)
- Anna A W M Sanders
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center Nashville, TN, USA
| | - Irina Kaverina
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center Nashville, TN, USA
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