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Dictyostelium Dynamin Superfamily GTPases Implicated in Vesicle Trafficking and Host-Pathogen Interactions

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FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2021.731964

关键词

amoebae; Dictyostelium discoideum; effector protein; large GTPase; host-pathogen interaction; Legionella; Mycobacterium; vesicle trafficking

资金

  1. Swiss National Science Foundation (SNF) [31003A_175557, 310030_200706]
  2. CNRS
  3. University of Montpellier
  4. Swiss National Science Foundation (SNF) [31003A_175557, 310030_200706] Funding Source: Swiss National Science Foundation (SNF)

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This article introduces the haploid social amoeba Dictyostelium discoideum as a model organism for studying vesicle trafficking, motility and migration, cell division, and other biological processes, and discusses the crucial role of Dynamin superfamily proteins (DSPs) in these processes. Major progress has been made in elucidating the function and structure of mammalian and D. discoideum DSPs, and the potential of using the genetically tractable amoeba to further study the role of DSPs in cell and infection biology is emphasized.
The haploid social amoeba Dictyostelium discoideum is a powerful model organism to study vesicle trafficking, motility and migration, cell division, developmental processes, and host cell-pathogen interactions. Dynamin superfamily proteins (DSPs) are large GTPases, which promote membrane fission and fusion, as well as membrane-independent cellular processes. Accordingly, DSPs play crucial roles for vesicle biogenesis and transport, organelle homeostasis, cytokinesis and cell-autonomous immunity. Major progress has been made over the last years in elucidating the function and structure of mammalian DSPs. D. discoideum produces at least eight DSPs, which are involved in membrane dynamics and other processes. The function and structure of these large GTPases has not been fully explored, despite the elaborate genetic and cell biological tools available for D. discoideum. In this review, we focus on the current knowledge about mammalian and D. discoideum DSPs, and we advocate the use of the genetically tractable amoeba to further study the role of DSPs in cell and infection biology. Particular emphasis is put on the virulence mechanisms of the facultative intracellular bacterium Legionella pneumophila.

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