Kinesin-8B controls basal body function and flagellum formation and is key to malaria transmission

Zeeshan, Mohammad; Ferguson, David JP; Abel, Steven; Burrrell, Alana; Rea, Edward; Brady, Declan; Daniel, Emilie; Delves, Michael; Vaughan, Sue; Holder, Anthony A; Le Roch, Karine G; Moores, Carolyn A; Tewari, Rita

Abstract

Eukaryotic flagella are conserved microtubule-based organelles that drive cell motility. Plasmodium, the causative agent of malaria, has a single flagellate stage: the male gamete in the mosquito. Three rounds of endomitotic division in male gametocyte together with an unusual mode of flagellum assembly rapidly produce eight motile gametes. These processes are tightly coordinated, but their regulation is poorly understood. To understand this important developmental stage, we studied the function and location of the microtubule-based motor kinesin-8B, using gene-targeting, electron microscopy, and live cell imaging. Deletion of the kinesin-8B gene showed no effect on mitosis but disrupted 9+2 axoneme assembly and flagellum formation during male gamete development and also completely ablated parasite transmission. Live cell imaging showed that kinesin-8B–GFP did not co-localise with kinetochores in the nucleus but instead revealed a dynamic, cytoplasmic localisation with the basal bodies and the assembling axoneme during flagellum formation. We, thus, uncovered an unexpected role for kinesin-8B in parasite flagellum formation that is vital for the parasite life cycle.

Citation

Zeeshan, M., Ferguson, D. J., Abel, S., Burrrell, A., Rea, E., Brady, D., …Tewari, R. (2019). Kinesin-8B controls basal body function and flagellum formation and is key to malaria transmission. Life Science Alliance, 2(4), 1-13. https://doi.org/10.26508/lsa.201900488

• Journal Article Type: Article
• Acceptance Date: Aug 6, 2019
• Online Publication Date: Aug 13, 2019
• Publication Date: 2019-08
• Deposit Date: Aug 16, 2019
• Publicly Available Date: Aug 16, 2019
• Journal: Life Science Alliance
• Print ISSN: 2575-1077
• Electronic ISSN: 2575-1077
• Publisher: Life Science Alliance
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Issue: 4
• Article Number: e201900488
• Pages: 1-13
• DOI: https://doi.org/10.26508/lsa.201900488
• Public URL: https://nottingham-repository.worktribe.com/output/2439520
• Publisher URL: https://www.life-science-alliance.org/content/2/4/e201900488