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Wint H, Li J, Abe T, Yamada H, Higaki T, Nasu Y, Watanabe M, Takei K, Takeda T. Pacsin 2-dependent N-cadherin internalization regulates the migration behaviour of malignant cancer cells. J Cell Sci 2023; 136:307447. [PMID: 37132654 DOI: 10.1242/jcs.260827] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 04/13/2023] [Indexed: 05/04/2023] Open
Abstract
Collective cell migration is the coordinated movement of multiple cells connected with cadherin-based adherens junctions essential for physiological and pathological processes. Cadherins undergo dynamic intracellular trafficking and their surface level is determined by a balance between endocytosis, recycling and degradation. However, the regulatory mechanism of cadherin turnover in collective cell migration remains elusive. In this study, we show that a BAR domain protein pacsin 2 plays an essential role in collective cell migration by regulating the N-cadherin endocytosis in human cancer cells. Pacsin 2-depleted cells formed cell-cell contacts enriched with N-cadherin and migrated in a directed manner. Furthermore, pacsin 2-depleted cells showed attenuated internalization of N-cadherin from the cell surface. Interestingly, the GST-pulldown assay demonstrated that the pacsin 2 SH3 domain binds to the cytoplasmic region of N-cadherin, and expression of an N-cadherin mutant defective in binding to pacsin 2 phenocopied pacsin 2 RNAi cells both in cell contact formation and N-cadherin endocytosis. These data support new insights into a novel endocytic route of N-cadherin in collective cell migration providing pacsin 2 as a possible therapeutic target for cancer metastasis.
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Affiliation(s)
- Haymar Wint
- Department of Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Shikata-cho 2-5-1, Kita-ku, Okayama 700-8558, Japan
| | - Jianzhen Li
- Department of Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Shikata-cho 2-5-1, Kita-ku, Okayama 700-8558, Japan
- Laboratory for Neural Cell Dynamics, RIKEN Center for Brain Science Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Tadashi Abe
- Department of Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Shikata-cho 2-5-1, Kita-ku, Okayama 700-8558, Japan
| | - Hiroshi Yamada
- Department of Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Shikata-cho 2-5-1, Kita-ku, Okayama 700-8558, Japan
| | - Takumi Higaki
- Faculty of Advanced Science and Technology, Kumamoto University, Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
- International Research Organization for Advanced Science and Technology, Kumamoto University, Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Yasutomo Nasu
- Laboratory for Neural Cell Dynamics, RIKEN Center for Brain Science Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Masami Watanabe
- Laboratory for Neural Cell Dynamics, RIKEN Center for Brain Science Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Kohji Takei
- Department of Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Shikata-cho 2-5-1, Kita-ku, Okayama 700-8558, Japan
| | - Tetsuya Takeda
- Department of Biochemistry, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Shikata-cho 2-5-1, Kita-ku, Okayama 700-8558, Japan
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2
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Alkafaas SS, Loutfy SA, Diab T, Hessien M. Vasopressin induces apoptosis but does not enhance the antiproliferative effect of dynamin 2 or PI3K/Akt inhibition in luminal A breast cancer cells. Med Oncol 2023; 40:35. [PMID: 36460880 PMCID: PMC9718716 DOI: 10.1007/s12032-022-01889-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/08/2022] [Indexed: 12/04/2022]
Abstract
Breast cancer cells abnormally express vasopressin (AVP) and its receptors. The effect of AVP is largely orchestrated through its downstream signaling and by receptor-mediated endocytosis (RME), in which Dynamin 2 (Dyn2) plays an integral role in vesicle closure. In this work, luminal A breast cancer cells were treated with AVP, and then Dynasore (DYN) was employed to inhibit Dyn2 to explore the combined effect of AVP and Dyn2 inhibition on the survival of breast cancer cells. The results revealed that DYN alone demonstrated a concentration-dependent cytotoxic effect in AVP untreated cells. Apoptosis developed in 29.7 and 30.3% of cells treated with AVP or AVP+DYN, respectively, compared to 32.5% in cells treated with Wortmannin (Wort, a selective PI3K pathway inhibitor). More apoptosis was observed when cells were treated with DYN+Wort in presence or absence of exogenous AVP. Besides, 2 or 4- fold increases in the expression of Bax and Caspase-3, were observed in cells exposed to AVP in absence or presence of DYN, respectively. This was associated with higher levels of the autophagy marker (LC3II protein). Meanwhile, the activation of Akt protein, sequentially decreased in the same pattern. Cell's invasion decreased when they were exposed to AVP alone or combined with DYN or/and Wort. Conclusively, although many reports suggested the proliferative effect of AVP, the results predict the antiproliferative and antimetastatic effects of 100 nM AVP in luminal A breast cancer cells. However, the hormone did not enhance the cytotoxic effect of Dyn 2 or PI3K pathway inhibition. Summary of the Dynamin 2 independent AVP antiproliferative effects. Breast cancer cells expresses AVP as a Prohormone (A). At high dose of AVP, the hormone is liganded with AVP receptor (B) to initiate RME, where the endosomed complex (C) is degraded through the endosome-lysosome system, as a part of signal management. These events consume soluble Dyn2 in neck closure and vesicle fission (D). This makes the cells more substitutable to the direct apoptotic effect of DYN (E). Alternatively, at lower AVP doses the liganded AVP may initiate cAMP-mediated downstream signaling (F) and cellular proliferation. In parallel, Wort inhibits PIP2-PIP3 conversion (G) and the subsequent inhibition of PI3K/Akt/mTOR pathway leading to cell death.
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Affiliation(s)
- Samar Sami Alkafaas
- grid.412258.80000 0000 9477 7793Molecular Cell Biology Unit, Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31511 Egypt
| | - Samah A. Loutfy
- grid.7776.10000 0004 0639 9286Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt ,grid.440862.c0000 0004 0377 5514Nanotechnology Research Center, British University, Cairo, Egypt
| | - Thoria Diab
- grid.412258.80000 0000 9477 7793Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31511 Egypt
| | - Mohamed Hessien
- grid.412258.80000 0000 9477 7793Molecular Cell Biology Unit, Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31511 Egypt
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Jang D, Eliseeva E, Klubo-Gwiezdzinska J, Neumann S, Gershengorn MC. TSH stimulation of human thyroglobulin and thyroid peroxidase gene transcription is partially dependent on internalization. Cell Signal 2022; 90:110212. [PMID: 34896620 PMCID: PMC8725617 DOI: 10.1016/j.cellsig.2021.110212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/29/2021] [Accepted: 12/05/2021] [Indexed: 02/03/2023]
Abstract
The TSH receptor (TSHR) is the major regulator of thyroid hormone biosynthesis in human thyrocytes by regulating the transcription of a number of genes including thyroglobulin (TG) and thyroperoxidase (TPO). Until recently, it was thought that TSHR initiated signal transduction pathways only at the cell-surface and that internalization was primarily involved in TSHR desensitization and downregulation. Studies primarily in mouse cells showed that TSHR internalization regulates gene transcription at an intracellular site also. However, this has not been shown for genes involved in thyroid hormone biosynthesis in human thyrocytes. We used human thyrocytes in primary culture. In these cells, the dose-response to TSH for gene expression is biphasic with low doses upregulating gene expression and higher doses decreasing gene expression. We used two approaches to inhibit internalization. In the first, we used inhibitors of dynamins, dynasore and dyngo-4a. Pretreatment with dynasore or dyngo-4a markedly inhibited TSH upregulation of TG and TPO mRNAs, as well as TG secretion. In the second, we used knockdown of dynamin 2, which is the most abundant dynamin in human thyrocytes. We showed that dynamin 2 knockdown inhibited TSHR internalization and decreased the TSH-stimulated levels of TG and TPO mRNAs and proteins. Lastly, we showed that the level of the activatory transcription factor phosphorylated cAMP response element binding protein (pCREB) in the cell nuclei was reduced by 68% when internalization was inhibited. We conclude that upregulation of genes involved in thyroid hormone synthesis in human thyrocytes is, in part, dependent on internalization leading to nuclear localization of an activated transcription factor(s).
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Affiliation(s)
- Daesong Jang
- Laboratory of Endocrinology and Receptor Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892
| | - Elena Eliseeva
- Laboratory of Endocrinology and Receptor Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892
| | - Joanna Klubo-Gwiezdzinska
- Metabolic Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892
| | - Susanne Neumann
- Laboratory of Endocrinology and Receptor Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892
| | - Marvin C. Gershengorn
- Laboratory of Endocrinology and Receptor Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892
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4
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Keum S, Yang SJ, Park E, Kang T, Choi JH, Jeong J, Hwang YE, Kim JW, Park D, Rhee S. Beta-Pix- dynamin 2 complex promotes colorectal cancer progression by facilitating membrane dynamics. Cell Oncol (Dordr) 2021; 44:1287-1305. [PMID: 34582006 PMCID: PMC8648671 DOI: 10.1007/s13402-021-00637-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 09/14/2021] [Indexed: 12/24/2022] Open
Abstract
PURPOSE Spatiotemporal regulation of cell membrane dynamics is a major process that promotes cancer cell invasion by acting as a driving force for cell migration. Beta-Pix (βPix), a guanine nucleotide exchange factor for Rac1, has been reported to be involved in actin-mediated cellular processes, such as cell migration, by interacting with various proteins. As yet, however, the molecular mechanisms underlying βPix-mediated cancer cell invasion remain unclear. METHODS The clinical significance of βPix was analyzed in patients with colorectal cancer (CRC) using public clinical databases. Pull-down and immunoprecipitation assays were employed to identify novel binding partners for βPix. Additionally, various cell biological assays including immunocytochemistry and time-lapse video microscopy were performed to assess the effects of βPix on CRC progression. A βPix-SH3 antibody delivery system was used to determine the effects of the βPix-Dyn2 complex in CRC cells. RESULTS We found that the Src homology 3 (SH3) domain of βPix interacts with the proline-rich domain of Dynamin 2 (Dyn2), a large GTPase. The βPix-Dyn2 interaction promoted lamellipodia formation, along with plasma membrane localization of membrane-type 1 matrix metalloproteinase (MT1-MMP). Furthermore, we found that Src kinase-mediated phosphorylation of the tyrosine residue at position 442 of βPix enhanced βPix-Dyn2 complex formation. Disruption of the βPix-Dyn2 complex by βPix-SH3 antibodies targeting intracellular βPix inhibited CRC cell invasion. CONCLUSIONS Our data indicate that spatiotemporal regulation of the Src-βPix-Dyn2 axis is crucial for CRC cell invasion by promoting membrane dynamics and MT1-MMP recruitment into the leading edge. The development of inhibitors that disrupt the βPix-Dyn2 complex may be a useful therapeutic strategy for CRC.
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Affiliation(s)
- Seula Keum
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Soo Jung Yang
- Translational Research Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, 98101, USA
| | - Esther Park
- School of Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - TaeIn Kang
- School of Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jee-Hye Choi
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jangho Jeong
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ye Eun Hwang
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jung-Woong Kim
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Dongeun Park
- School of Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sangmyung Rhee
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
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5
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Li J, Fujise K, Wint H, Senju Y, Suetsugu S, Yamada H, Takei K, Takeda T. Dynamin 2 and BAR domain protein pacsin 2 cooperatively regulate formation and maturation of podosomes. Biochem Biophys Res Commun 2021; 571:145-51. [PMID: 34325130 DOI: 10.1016/j.bbrc.2021.07.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/11/2021] [Indexed: 11/20/2022]
Abstract
Podosomes are actin-rich adhesion structures formed in a variety of cell types, such as monocytic cells or cancer cells, to facilitate attachment to and degradation of the extracellular matrix (ECM). Previous studies showed that dynamin 2, a large GTPase involved in membrane remodeling and actin organization, is required for podosome function. However, precise roles of dynamin 2 at the podosomes remain to be elucidated. In this study, we identified a BAR (Bin-Amphiphysin-Rvs167) domain protein pacsin 2 as a functional partner of dynamin 2 at podosomes. Dynamin 2 and pacsin 2 interact and co-localize to podosomes in Src-transformed NIH 3T3 (NIH-Src) cells. RNAi of either dynamin 2 or pacsin 2 in NIH-Src cells inhibited podosome formation and maturation, suggesting essential and related roles at podosomes. Consistently, RNAi of pacsin 2 prevented dynamin 2 localization to podosomes, and reciprocal RNAi of dynamin 2 prevented pacsin 2 localization to podosomes. Taking these results together, we conclude that dynamin 2 and pacsin 2 co-operatively regulate organization of podosomes in NIH-Src cells.
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6
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Trochet D, Bitoun M. A review of Dynamin 2 involvement in cancers highlights a promising therapeutic target. J Exp Clin Cancer Res 2021; 40:238. [PMID: 34294140 PMCID: PMC8296698 DOI: 10.1186/s13046-021-02045-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/15/2021] [Indexed: 12/23/2022]
Abstract
Dynamin 2 (DNM2) is an ubiquitously expressed large GTPase well known for its role in vesicle formation in endocytosis and intracellular membrane trafficking also acting as a regulator of cytoskeletons. During the last two decades, DNM2 involvement, through mutations or overexpression, emerged in an increasing number of cancers and often associated with poor prognosis. A wide panel of DNM2-dependent processes was described in cancer cells which explains DNM2 contribution to cancer pathomechanisms. First, DNM2 dysfunction may promote cell migration, invasion and metastasis. Second, DNM2 acts on intracellular signaling pathways fostering tumor cell proliferation and survival. Relative to these roles, DNM2 was demonstrated as a therapeutic target able to reduce cell proliferation, induce apoptosis, and reduce the invasive phenotype in a wide range of cancer cells in vitro. Moreover, proofs of concept of therapy by modulation of DNM2 expression was also achieved in vivo in several animal models. Consequently, DNM2 appears as a promising molecular target for the development of anti-invasive agents and the already provided proofs of concept in animal models represent an important step of preclinical development.
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Affiliation(s)
- Delphine Trochet
- Centre de Recherche en Myologie, Sorbonne Université, Inserm, UMRS 974, Institut de Myologie, F-75013, Paris, France
| | - Marc Bitoun
- Centre de Recherche en Myologie, Sorbonne Université, Inserm, UMRS 974, Institut de Myologie, F-75013, Paris, France.
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7
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Sajed R, Saeednejad Zanjani L, Rahimi M, Mansoori M, Zarnani AH, Madjd Z, Ghods R. Overexpression and translocation of dynamin 2 promotes tumor aggressiveness in breast carcinomas. EXCLI J 2020; 19:1423-1435. [PMID: 33250680 PMCID: PMC7689243 DOI: 10.17179/excli2020-2762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/10/2020] [Indexed: 12/14/2022]
Abstract
Dynamin 2 is a GTPase protein that has been implicated in cancer progression through its various roles such as endocytosis, morphogenesis, epithelial-mesenchymal transition (EMT), cellular contractions, and focal adhesion maturation. The increased expression levels of this molecule have been demonstrated with the development of several cancers such as prostate, pancreas, and bladder. However, its clinical significance in breast cancer is unclear yet. In the present study, the membranous, cytoplasmic, and nuclear expression levels of dynamin 2 molecule were evaluated for the first time, using immunohistochemistry (IHC) on tissue microarray (TMA) slides in 113 invasive breast cancer tissues. Moreover, afterward, the association between the dynamin 2 expression and clinicopathological features was determined. Our finding showed that, a higher nuclear expression of dynamin 2 is significantly associated with an increase in tumor stage (P = 0.05), histological grade (P = 0.001), and age of the patients (P = 0.03). In addition, analysis of the cytoplasmic expression levels of this molecule revealed that, there was a statistically significant difference between the expression levels of dynamin 2 among the different breast cancer subtypes (P = 0.003). Moreover, a significant association was found between the increased expression of dynamin 2 membranous and vascular invasion (VI) (P = 0.02). We showed that dynamin 2 protein expression has an association with more aggressive tumor behavior and more advanced disease in the patients with breast cancer; therefore, dynamin 2 molecule could be considered as an indicator of disease progression and aggressiveness.
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Affiliation(s)
- Roya Sajed
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medicine Sciences (IUMS), Tehran, Iran.,Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | | | - Mandana Rahimi
- Hasheminejad Kidney Center, Pathology Department, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Maryam Mansoori
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medicine Sciences (IUMS), Tehran, Iran.,Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Amir-Hassan Zarnani
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences (TUMS), Tehran, Iran.,Reproductive Immunology Research Center, Avicenna Research Institute (ACECR), Tehran, Iran
| | - Zahra Madjd
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medicine Sciences (IUMS), Tehran, Iran.,Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Roya Ghods
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medicine Sciences (IUMS), Tehran, Iran.,Oncopathology Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
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8
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Kakiuchi K, Unoda K, Nakajima H, Nishino I, Arawaka S. Paraspinal amyotrophy in DNM-2-related centronuclear myopathy. J Neurol Sci 2019; 407:116537. [PMID: 31655408 DOI: 10.1016/j.jns.2019.116537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/18/2019] [Accepted: 10/15/2019] [Indexed: 11/20/2022]
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9
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Viplav A, Saha T, Huertas J, Selenschik P, Ebrahimkutty MP, Grill D, Lehrich J, Hentschel A, Biasizzo M, Mengoni S, Ahrends R, Gerke V, Cojocaru V, Klingauf J, Galic M. ArhGEF37 assists dynamin 2 during clathrin-mediated endocytosis. J Cell Sci 2019; 132:jcs.226530. [PMID: 30926623 PMCID: PMC6526708 DOI: 10.1242/jcs.226530] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 03/22/2019] [Indexed: 12/20/2022] Open
Abstract
Clathrin-mediated endocytosis (CME) engages over 30 proteins to secure efficient cargo and membrane uptake. While the function of most core CME components is well established, auxiliary mechanisms crucial for fine-tuning and adaptation remain largely elusive. In this study, we identify ArhGEF37, a currently uncharacterized protein, as a constituent of CME. Structure prediction together with quantitative cellular and biochemical studies present a unique BAR domain and PI(4,5)P2-dependent protein–membrane interactions. Functional characterization yields accumulation of ArhGEF37 at dynamin 2-rich late endocytic sites and increased endocytosis rates in the presence of ArhGEF37. Together, these results introduce ArhGEF37 as a regulatory protein involved in endocytosis. Summary: Accumulation of ArhGEF37 at dynamin 2-rich late endocytic sites yields increased rates of endocytosis.
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Affiliation(s)
- Abhiyan Viplav
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Tanumoy Saha
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Jan Huertas
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Computational Structural Biology Group, Dept. of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Muenster, 48149 Muenster, Germany
| | - Philipp Selenschik
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Mirsana P Ebrahimkutty
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - David Grill
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute for Medical Biochemistry, ZMBE, University of Muenster, 48149 Muenster, Germany
| | - Julia Lehrich
- Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Andreas Hentschel
- Leibniz-Institut für Analytische Wissenschaften, ISAS, 44139 Dortmund, Germany
| | - Monika Biasizzo
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Simone Mengoni
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Robert Ahrends
- Leibniz-Institut für Analytische Wissenschaften, ISAS, 44139 Dortmund, Germany
| | - Volker Gerke
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute for Medical Biochemistry, ZMBE, University of Muenster, 48149 Muenster, Germany
| | - Vlad Cojocaru
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Computational Structural Biology Group, Dept. of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Muenster, 48149 Muenster, Germany
| | - Jürgen Klingauf
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany.,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
| | - Milos Galic
- DFG Cluster of Excellence 'Cells in Motion', University of Muenster, 48149 Muenster, Germany .,Institute of Medical Physics and Biophysics, University of Muenster, 48149 Muenster, Germany
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10
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Lee JS, Ismail AM, Lee JY, Zhou X, Materne EC, Chodosh J, Rajaiya J. Impact of dynamin 2 on adenovirus nuclear entry. Virology 2019; 529:43-56. [PMID: 30660774 DOI: 10.1016/j.virol.2019.01.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 01/06/2019] [Accepted: 01/07/2019] [Indexed: 01/28/2023]
Abstract
The large GTPase dynamin 2 controls both endosomal fission and microtubule acetylation. Here we report that dynamin 2 alters microtubules and regulates the trafficking of human adenovirus type 37. Dynamin 2 knockdown by siRNA in infected cells resulted in accumulation of acetylated tubulin, repositioning of microtubule organizing centers (MTOCs) closer to cell nuclei, increased virus in the cytosol (with a compensatory decrease in endosomal virus), reduced proinflammatory cytokine induction, and increased binding of virus to the nucleoporin, Nup358. These events led to increased viral DNA nuclear entry and viral replication. Overexpression of dynamin 2 generated opposite effects. Therefore, dynamin 2 inhibits adenovirus replication and promotes innate immune responses by the infected cell. MTOC transposition in dynamin 2 knockdown promotes a closer association with nuclear pore complexes to facilitate viral DNA delivery. Dynamin 2 plays a key role in adenoviral trafficking and influences host responses to infection.
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Affiliation(s)
- Ji Sun Lee
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Ashrafali M Ismail
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Jeong Yoon Lee
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Xiaohong Zhou
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Emma C Materne
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - James Chodosh
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Jaya Rajaiya
- Howe Laboratory, Mass Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA.
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11
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Trochet D, Prudhon B, Beuvin M, Peccate C, Lorain S, Julien L, Benkhelifa-Ziyyat S, Rabai A, Mamchaoui K, Ferry A, Laporte J, Guicheney P, Vassilopoulos S, Bitoun M. Allele-specific silencing therapy for Dynamin 2-related dominant centronuclear myopathy. EMBO Mol Med 2018; 10:239-253. [PMID: 29246969 PMCID: PMC5801507 DOI: 10.15252/emmm.201707988] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 11/14/2017] [Accepted: 11/20/2017] [Indexed: 11/09/2022] Open
Abstract
Rapid advances in allele-specific silencing by RNA interference established a strategy of choice to cure dominant inherited diseases by targeting mutant alleles. We used this strategy for autosomal-dominant centronuclear myopathy (CNM), a rare neuromuscular disorder without available treatment due to heterozygous mutations in the DNM2 gene encoding Dynamin 2. Allele-specific siRNA sequences were developed in order to specifically knock down the human and murine DNM2-mRNA harbouring the p.R465W mutation without affecting the wild-type allele. Functional restoration was achieved in muscle from a knock-in mouse model and in patient-derived fibroblasts, both expressing the most frequently encountered mutation in patients. Restoring either muscle force in a CNM mouse model or DNM2 function in patient-derived cells is an essential breakthrough towards future gene-based therapy for dominant centronuclear myopathy.
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Affiliation(s)
- Delphine Trochet
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Bernard Prudhon
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Maud Beuvin
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Cécile Peccate
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Stéphanie Lorain
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Laura Julien
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Sofia Benkhelifa-Ziyyat
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Aymen Rabai
- Department of Translational Medicine and Neurogenetics, IGBMC, INSERM U964, CNRS UMR7104, Collège de France, University of Strasbourg, Illkirch, France
| | - Kamel Mamchaoui
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Arnaud Ferry
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Jocelyn Laporte
- Department of Translational Medicine and Neurogenetics, IGBMC, INSERM U964, CNRS UMR7104, Collège de France, University of Strasbourg, Illkirch, France
| | - Pascale Guicheney
- Institute of Cardiometabolism and Nutrition (ICAN), INSERM UMR_S1166, UPMC Univ Paris 06, Sorbonne Universités, Paris, France
| | - Stéphane Vassilopoulos
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
| | - Marc Bitoun
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMRS 974, Institute of Myology, Sorbonne Universités, Paris, France
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Takahashi Y, Tsotakos N, Liu Y, Young MM, Serfass J, Tang Z, Abraham T, Wang HG. The Bif-1- Dynamin 2 membrane fission machinery regulates Atg9-containing vesicle generation at the Rab11-positive reservoirs. Oncotarget 2018; 7:20855-68. [PMID: 26980706 PMCID: PMC4991497 DOI: 10.18632/oncotarget.8028] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 02/15/2016] [Indexed: 01/08/2023] Open
Abstract
Atg9 is a multispanning transmembrane protein that is required for autophagosome formation. During autophagy, vesicles containing Atg9 are generated through an unknown mechanism and delivered to the autophagosome formation sites. We have previously reported that Atg9-containing membranes undergo continuous tubulation and fission during nutrient starvation in a manner dependent on the curvature-inducing protein Bif-1/Sh3glb1. Here, we identify Dynamin 2 (DNM2) as a Bif-1-interacting protein that mediates the fission of Atg9-containing membranes during autophagy. The interaction of Bif-1 and DNM2 is enhanced upon nutrient starvation, and Bif-1 and DNM2 cooperatively induce the generation of Atg9-containing vesicles. Inhibition of the GTPase activity of DNM2 results in the accumulation of Atg9-positive tubular structures that originate from a Rab11-positive reservoir. Although Atg9 seems to be constitutively trafficked to the reservoir regardless of Bif-1 expression, membrane tubulation from the Atg9 reservoir is dependent on Bif-1 and is strongly induced upon nutrient starvation. These findings suggest that the generation of Atg9 vesicles from a Rab11-positive reservoir is tightly controlled by the Bif-1-DNM2 membrane fission machinery in response to cellular demand for autophagy.
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Affiliation(s)
- Yoshinori Takahashi
- Department of Pediatrics, Penn State University College of Medicine, Hershey, PA 17033, USA.,Penn State Cancer Institute, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Nikolaos Tsotakos
- Department of Pediatrics, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Ying Liu
- Department of Pharmacology, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Megan M Young
- Department of Pediatrics, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Jacob Serfass
- Department of Pharmacology, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Zhenyuan Tang
- Department of Pharmacology, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Thomas Abraham
- Department of Neural and Behavioral Science and the Microscopy Imaging Facility, Penn State University College of Medicine, Hershey, PA 17033, USA
| | - Hong-Gang Wang
- Department of Pediatrics, Penn State University College of Medicine, Hershey, PA 17033, USA.,Department of Pharmacology, Penn State University College of Medicine, Hershey, PA 17033, USA.,Penn State Cancer Institute, Penn State University College of Medicine, Hershey, PA 17033, USA
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13
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Abstract
Autosomal dominant centronuclear myopathy (CNM) is a rare congenital myopathy characterized by centrally located nuclei in muscle fibers. CNM results from mutations in the gene encoding dynamin 2 (DNM2), a large GTPase involved in endocytosis, intracellular membrane trafficking, and cytoskeleton regulation. We developed a knock-in mouse model expressing the most frequent DNM2-CNM mutation; i.e. the KI-Dnm2R465W model. Heterozygous (HTZ) KI-Dnm2 mice progressively develop muscle atrophy, impairment of contractile properties, histopathological abnormalities, and elevated cytosolic calcium concentration. Here, we aim at better characterizing the calcium homeostasis impairment in extensor digitorum longus (EDL) and soleus muscles from adult HTZ KI-Dnm2 mice. We demonstrate abnormal contractile properties and cytosolic Ca2+ concentration in EDL but not soleus muscles showing that calcium impairment is correlated with muscle weakness and might be a determinant factor of the spatial muscle involvement. In addition, the elevated cytosolic Ca2+ concentration in EDL muscles is associated with an increased sarcolemmal permeability to Ca2+ and releasable Ca2+ content from the sarcoplasmic reticulum. However, amplitude and kinetics characteristics of the calcium transient appear unchanged. This suggests that calcium defect is probably not a primary cause of decreased force generation by compromised sarcomere shortening but may be involved in long-term deleterious consequences on muscle physiology. Our results highlight the first pathomechanism which may explain the spatial muscle involvement occurring in DNM2-related CNM and open the way toward development of a therapeutic approach to normalize calcium content. Summary: Dynamin 2 mutations cause centronuclear myopathy via unclear mechanisms. We show in a mouse model that changes in cytosolic calcium via incorrect membrane permeability correlate with muscle weakness.
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Affiliation(s)
- Bodvaël Fraysse
- Atlantic Gene Therapies, INSERM UMR 1089, Université de Nantes, CHU de Nantes, Nantes 44200, France
| | - Pascale Guicheney
- INSERM, UMR_S1166, Sorbonne Universités, UPMC Univ Paris 06, UMR_S1166, Institute of Cardiometabolism and Nutrition (ICAN), Paris 75013, France
| | - Marc Bitoun
- Research Center for Myology, UPMC Univ Paris 06 and INSERM UMR_S974, CNRS FRE 3617, Institute of Myology, Paris 75013, France
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14
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Fajardo VA, Bombardier E, McMillan E, Tran K, Wadsworth BJ, Gamu D, Hopf A, Vigna C, Smith IC, Bellissimo C, Michel RN, Tarnopolsky MA, Quadrilatero J, Tupling AR. Phospholamban overexpression in mice causes a centronuclear myopathy-like phenotype. Dis Model Mech 2015; 8:999-1009. [PMID: 26035394 PMCID: PMC4527296 DOI: 10.1242/dmm.020859] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 05/21/2015] [Indexed: 12/16/2022] Open
Abstract
Centronuclear myopathy (CNM) is a congenital myopathy that is histopathologically characterized by centrally located nuclei, central aggregation of oxidative activity, and type I fiber predominance and hypotrophy. Here, we obtained commercially available mice overexpressing phospholamban (PlnOE), a well-known inhibitor of sarco(endo)plasmic reticulum Ca2+-ATPases (SERCAs), in their slow-twitch type I skeletal muscle fibers to determine the effects on SERCA function. As expected with a 6- to 7-fold overexpression of phospholamban, SERCA dysfunction was evident in PlnOE muscles, with marked reductions in rates of Ca2+ uptake, maximal ATPase activity and the apparent affinity of SERCA for Ca2+. However, our most significant discovery was that the soleus and gluteus minimus muscles from the PlnOE mice displayed overt signs of myopathy: they histopathologically resembled human CNM, with centrally located nuclei, central aggregation of oxidative activity, type I fiber predominance and hypotrophy, progressive fibrosis and muscle weakness. This phenotype is associated with significant upregulation of muscle sarcolipin and dynamin 2, increased Ca2+-activated proteolysis, oxidative stress and protein nitrosylation. Moreover, in our assessment of muscle biopsies from three human CNM patients, we found a significant 53% reduction in SERCA activity and increases in both total and monomeric PLN content compared with five healthy subjects, thereby justifying future studies with more CNM patients. Altogether, our results suggest that the commercially available PlnOE mouse phenotypically resembles human CNM and could be used as a model to test potential mechanisms and therapeutic strategies. To date, there is no cure for CNM and our results suggest that targeting SERCA function, which has already been shown to be an effective therapeutic target for murine muscular dystrophy and human cardiomyopathy, might represent a novel therapeutic strategy to combat CNM. Summary: Phospholamban overexpression in mouse slow-twitch muscle impairs SERCA function and causes histopathological features associated with human centronuclear myopathy.
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Affiliation(s)
- Val A Fajardo
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Eric Bombardier
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Elliott McMillan
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Khanh Tran
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Brennan J Wadsworth
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Daniel Gamu
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Andrew Hopf
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Chris Vigna
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Ian C Smith
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Catherine Bellissimo
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Robin N Michel
- Department of Exercise Science, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Mark A Tarnopolsky
- Departement of Kinesiology, McMaster University, Hamilton, Ontario L8N 3Z5, Canada Department of Pediatrics, McMaster University, Hamilton, Ontario L8N 3Z5, Canada Department of Medicine, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - Joe Quadrilatero
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - A Russell Tupling
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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15
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James NG, Digman MA, Ross JA, Barylko B, Wang L, Li J, Chen Y, Mueller JD, Gratton E, Albanesi JP, Jameson DM. A mutation associated with centronuclear myopathy enhances the size and stability of dynamin 2 complexes in cells. Biochim Biophys Acta Gen Subj 2013; 1840:315-21. [PMID: 24016602 DOI: 10.1016/j.bbagen.2013.09.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 08/31/2013] [Accepted: 09/03/2013] [Indexed: 12/17/2022]
Abstract
BACKGROUND Dynamin 2 (Dyn2) is a ~100kDa GTPase that assembles around the necks of nascent endocytic and Golgi vesicles and catalyzes membrane scission. Mutations in Dyn2 that cause centronuclear myopathy (CNM) have been shown to stabilize Dyn2 polymers against GTP-dependent disassembly in vitro. Precisely timed regulation of assembly and disassembly is believed to be critical for Dyn2 function in membrane vesiculation, and the CNM mutations interfere with this regulation by shifting the equilibrium toward the assembled state. METHODS In this study we use two fluorescence fluctuation spectroscopy (FFS) approaches to show that a CNM mutant form of Dyn2 also has a greater propensity to self-assemble in the cytosol and on the plasma membrane of living cells. RESULTS Results obtained using brightness analysis indicate that unassembled wild-type Dyn2 is predominantly tetrameric in the cytosol, although different oligomeric species are observed, depending on the concentration of expressed protein. In contrast, an R369W mutant identified in CNM patients forms higher-order oligomers at concentrations above 1μM. Investigation of Dyn2-R369W by Total Internal Reflection Fluorescence (TIRF) FFS reveals that this mutant forms larger and more stable clathrin-containing structures on the plasma membrane than wild-type Dyn2. CONCLUSIONS AND GENERAL SIGNIFICANCE These observations may explain defects in membrane trafficking reported in CNM patient cells and in heterologous systems expressing CNM-associated Dyn2 mutants.
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Affiliation(s)
- Nicholas G James
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, 651 Ilalo Street, Biosciences 222, Honolulu, HI 96813, USA
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