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The Ways of Actin: Why Tunneling Nanotubes Are Unique Cell Protrusions

Nina Ljubojevic 1, 2 J. Michael Henderson 1, 3 Chiara Zurzolo 1, *
* Corresponding author
1 Trafic membranaire et Pathogénèse - Membrane Traffic and Pathogenesis
Institut Pasteur [Paris], CNRS - Centre National de la Recherche Scientifique : UMR3691
Abstract : Actin remodeling is at the heart of the response of cells to external or internalstimuli, allowing a variety of membrane protrusions to form. Fifteen years ago,tunneling nanotubes (TNTs) were identified,bringinganoveladditiontothefamily of actin-supported cellular protrusions. Their unique property as conduitsfor cargo transfer between distant cells emphasizes the unique nature of TNTsamong other protrusions. While TNTs in different pathological and physiologicalscenarios have been described, the molecular basis of how TNTs form is not wellunderstood. In this review, we discuss the role of several actin regulators in theformation of TNTs and suggest potential players based on their comparisonwith other actin-based protrusions. New perspectives for discovering a distinctTNT formation pathway would enable us to target them in treating the increasingnumber of TNT-involved pathologies.
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Submitted on : Friday, March 12, 2021 - 9:26:56 AM
Last modification on : Thursday, June 17, 2021 - 6:02:02 PM
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Nina Ljubojevic, J. Michael Henderson, Chiara Zurzolo. The Ways of Actin: Why Tunneling Nanotubes Are Unique Cell Protrusions. Trends in Cell Biology, Elsevier, 2021, 31 (2), pp.130-142. ⟨10.1016/j.tcb.2020.11.008⟩. ⟨pasteur-03167401⟩



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