A subpellicular microtubule dynein transport machinery regulates ookinete morphogenesis for mosquito transmission of Plasmodium yoelii

Bing Liu, Cong Liu, Zhenkui Li, Wenjia Liu, Huiting Cui () and Jing Yuan ()
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Bing Liu: Xiamen University
Cong Liu: University of South China
Zhenkui Li: University of South China
Wenjia Liu: Xiamen University
Huiting Cui: Xiamen University
Jing Yuan: Xiamen University

Nature Communications, 2024, vol. 15, issue 1, 1-21

Abstract: Abstract The cortical cytoskeleton of subpellicular microtubules (SPMTs) supports the Plasmodium ookinete morphogenesis during mosquito transmission of malaria. SPMTs are hypothesized to function as the cytoskeletal tracks in motor-driven cargo transport for apical organelle and structure assembly in ookinetes. However, the SPMT-based transport motor has not been identified in the Plasmodium. The cytoplasmic dynein is the motor moving towards the minus end of microtubules (MTs) and likely be responsible for cargo transport to the apical part in ookinetes. Here we screen 7 putative dynein heavy chain (DHC) proteins in the P. yoelii and identify DHC3 showing peripheral localization in ookinetes. DHC3 is localized at SPMTs throughout ookinete morphogenesis. We also identify five other dynein subunits localizing at SPMTs. DHC3 disruption impairs ookinete development, shape, and gliding, leading to failure in mosquito infection of Plasmodium. The DHC3-deficient ookinetes display defective formation or localization of apical organelles and structures. Rab11A and Rab11B interact with DHC3 at SPMTs in a DHC3-dependent manner, likely functioning as the receptors for the cargoes driven by SPMT-dynein. Disturbing Rab11A or Rab11B phenocopies DHC3 deficiency in ookinete morphogenesis. Our study reveals an SPMT-based dynein motor driving the transport of Rab11A- and Rab11B-labeled cargoes in the ookinete morphogenesis of Plasmodium.

Date: 2024
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DOI: 10.1038/s41467-024-52970-7

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