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M-Sec promotes membrane nanotube formation by interacting with Ral and the exocyst complex
- Koji Hase1,
- Shunsuke Kimura1,
- Hiroyuki Takatsu1,
- Masumi Ohmae1,
- Sayaka Kawano1,
- Hiroshi Kitamura2,
- Masatoshi Ito2,5,
- Hiroshi Watarai3,
- C. Clayton Hazelett4,
- Charles Yeaman4 &
- …
- Hiroshi Ohno1,5
Nature Cell Biologyvolume 11, pages1427–1432 (2009)Cite this article
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Abstract
Cell–cell communication is essential for the development and homeostasis of multicellular organisms. Recently, a new type of cell–cell communication was discovered that is based on the formation of thin membranous nanotubes between remote cells1,2. These long membrane tethers, termed tunneling nanotubes (TNTs), form an intercellular conduit and have been shown to enable the transport of various cellular components and signals. However, the molecular basis for TNT formation remains to be elucidated. Here we report that a mammalian protein, M-Sec, inducesde novo formation of numerous membrane protrusions extending from the plasma membrane, some of which tether onto adjacent cells and subsequently form TNT-like structures. Depletion of M-Sec by RNA interference (RNAi) greatly reduced endogenous TNT formation as well as intercellular propagation of a calcium flux in a macrophage cell line. Furthermore, blockage of the interaction of M-Sec with Ral and the exocyst complex, which serves as a downstream effector of Ral, attenuated the formation of membrane nanotubes. Our results reveal that M-Sec functions as a key regulator of membrane nanotube formation through interaction with the Ral–exocyst pathway.
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References
Rustom, A., Saffrich, R., Markovic, I., Walther, P. & Gerdes, H. H. Nanotubular highways for intercellular organelle transport.Science303, 1007–1010 (2004).
Watkins, S. C. & Salter, R. D. Functional connectivity between immune cells mediated by tunneling nanotubules.Immunity23, 309–318 (2005).
Grakoui, A. et al. The immunological synapse: a molecular machine controlling T cell activation.Science285, 221–227 (1999).
Thery, C., Zitvogel, L. & Amigorena, S. Exosomes: composition, biogenesis and function.Nature Rev. Immunol.2, 569–579 (2002).
Gerdes, H. H., Bukoreshtliev, N. V. & Barroso, J. F. Tunneling nanotubes: a new route for the exchange of components between animal cells.FEBS Lett.581, 2194–2201 (2007).
Onfelt, B. et al. Structurally distinct membrane nanotubes between human macrophages support long-distance vesicular traffic or surfing of bacteria.J. Immunol.177, 8476–8483 (2006).
Onfelt, B., Nedvetzki, S., Yanagi, K. & Davis, D. M. Cutting edge: membrane nanotubes connect immune cells.J. Immunol.173, 1511–1513 (2004).
Sherer, N. M. et al.Retroviruses can establish filopodial bridges for efficient cell-to-cell transmission.Nature Cell Biol.9, 310–315 (2007).
Sowinski, S. et al. Membrane nanotubes physically connect T cells over long distances presenting a novel route for HIV-1 transmission.Nature Cell Biol.10, 211–219 (2008).
Xu, W. et al. HIV-1 evades virus-specific IgG2 and IgA responses by targeting systemic and intestinal B cells via long-range intercellular conduits.Nature Immunol.10, 1008–1017 (2009).
Kraehenbuhl, J. P. & Neutra, M. R. Epithelial M cells: differentiation and function.Annu. Rev. Cell Dev. Biol.16, 301–332 (2000).
Hase, K. et al. Uptake via glycoprotein 2 of FimH+ bacteria by M cells initiates mucosal immune response.Nature462, 226–230 (2009).
Hase, K. et al. Distinct gene expression profiles characterize cellular phenotypes of follicle-associated epithelium and M cells.DNA Res.12, 127–137 (2005).
Sarma, V., Wolf, F. W., Marks, R. M., Shows, T. B. & Dixit, V. M. Cloning of a novel tumor necrosis factor-alpha-inducible primary response gene that is differentially expressed in development and capillary tube-like formation in vitro.J. Immunol.148, 3302–3312 (1992).
Wolf, F. W. et al. B94, a primary response gene inducible by tumor necrosis factor-alpha, is expressed in developing hematopoietic tissues and the sperm acrosome.J. Biol. Chem.269, 3633–3640 (1994).
Hijikata, A. et al. Construction of an open-access database that integrates cross-reference information from the transcriptome and proteome of immune cells.Bioinformatics23, 2934–2941 (2007).
Chinnery, H. R., Pealman, E. & McMenamin, P. G. Membrane nanotubulesin vivo: a feature of MHC class II+ cells in the mouse cornea.J. Immunol.180, 5779–5783 (2008).
Davis, D. M. & Sowinski, S. Membrane nanotubes: dynamic long-distance connections between animal cells.Nature Rev. Mol. Cell Biol.9, 431–436 (2008).
Colicelli, J. Human RAS superfamily proteins and related GTPases.Sci. STKE2004, RE13 (2004).
Burridge, K. & Wennerberg, K. Rho and Rac take center stage.Cell116, 167–179 (2004).
Ohta, Y., Suzuki, N., Nakamura, S., Hartwig, J. H. & Stossel, T. P. The small GTPase RalA targets filamin to induce filopodia.Proc. Natl Acad. Sci. USA96, 2122–2128 (1999).
Sugihara, K. et al. The exocyst complex binds the small GTPase RalA to mediate filopodia formation.Nature Cell Biol.4, 73–78 (2002).
Moskalenko, S. et al. The exocyst is a Ral effector complex.Nature Cell Biol.4, 66–72 (2002).
Jin, R. et al. Exo84 and Sec5 are competitive regulatory Sec6/8 effectors to the RalA GTPase.Embo J.24, 2064–2074 (2005).
Lalli, G. & Hall, A. Ral GTPases regulate neurite branching through GAP-43 and the exocyst complex.J. Cell Biol.171, 857–869 (2005).
van Dam, E. M. & Robinson, P. J. Ral: mediator of membrane trafficking.Int. J. Biochem. Cell Biol.38, 1841–1847 (2006).
Ikeda, M., Ishida, O., Hinoi, T., Kishida, S. & Kikuchi, A. Identification and characterization of a novel protein interacting with Ral-binding protein 1, a putative effector protein of Ral.J. Biol. Chem.273, 814–821 (1998).
Mattila, P. K. & Lappalainen, P. Filopodia: molecular architecture and cellular functions.Nature Rev. Mol. Cell Biol.9, 446–454 (2008).
Hsu, S. C., TerBush, D., Abraham, M. & Guo, W. The exocyst complex in polarized exocytosis.Int. Rev. Cytol.233, 243–265 (2004).
Yeaman, C., Grindstaff, K. K. & Nelson, W. J. Mechanism of recruiting Sec6/8 (exocyst) complex to the apical junctional complex during polarization of epithelial cells.J. Cell Sci.117, 559–570 (2004).
Hase, K. et al. The membrane-bound chemokine CXCL16 expressed on follicle-associated epithelium and M cells mediates lympho-epithelial interaction in GALT.J. Immunol.176, 43–51 (2006).
Chien, Y. et al. RalB GTPase-mediated activation of the IkappaB family kinase TBK1 couples innate immune signaling to tumor cell survival.Cell127, 157–170 (2006).
Chen, X. W., Inoue, M., Hsu, S. C. & Saltiel, A. R. RalA-exocyst-dependent recycling endosome trafficking is required for the completion of cytokinesis.J. Biol. Chem.281, 38609–38616 (2006).
Acknowledgements
We would like to thank I. Yamashita and Y. Fujimura for technical assistance, and. P. Burrows and C. Blaumueller for critically reviewing the manuscript. This study was supported in part by Grants-in-Aid for Young Scientists (B) (K.H.), Scientific Research (B) (H.O.), Scientific Research in Priority Areas (H.O. and K.H.) and Scientific Research on Innovative Areas (H.O.) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and grants from the National Institutes of Health (GM067002; C.Y.) and the Takeda Science Foundation (K.H.).
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Authors and Affiliations
Laboratory for Epithelial Immunobiology, 230-0045, Kanagawa, Japan
Koji Hase, Shunsuke Kimura, Hiroyuki Takatsu, Masumi Ohmae, Sayaka Kawano & Hiroshi Ohno
Laboratory for Immunogenomics, 230-0045, Kanagawa, Japan
Hiroshi Kitamura & Masatoshi Ito
Laboratory for Immune regulation, Research Center for Allergy and Immunology, RIKEN, 230-0045, Kanagawa, Japan
Hiroshi Watarai
Department of Anatomy & Cell Biology, Carver College of Medicine, University of Iowa, 52242, IA, USA
C. Clayton Hazelett & Charles Yeaman
Department of Supramolecular Biology, Graduate School of Nanobioscience, Yokohama City University, 230-0045, Kanagawa, Japan
Masatoshi Ito & Hiroshi Ohno
- Koji Hase
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- Shunsuke Kimura
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- Hiroyuki Takatsu
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- Masumi Ohmae
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- Sayaka Kawano
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- Hiroshi Kitamura
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- Masatoshi Ito
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- Hiroshi Watarai
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- C. Clayton Hazelett
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- Charles Yeaman
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- Hiroshi Ohno
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Contributions
K.H. designed and performed experiments, and wrote the paper. S.Ki. performed experiments and helped with data analysis. H.T., M.O., S.Ka., H.K., M.I. and H.W. helped with the experiments. C.Y. and C.C.H. prepared antibodies and performed experiments. H.O. supervised the project and wrote the paper with K.H.
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Correspondence toHiroshi Ohno.
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Hase, K., Kimura, S., Takatsu, H.et al. M-Sec promotes membrane nanotube formation by interacting with Ral and the exocyst complex.Nat Cell Biol11, 1427–1432 (2009). https://doi.org/10.1038/ncb1990
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