Cell biological analysis reveals an essential role for Pfcerli2 in erythrocyte invasion by malaria parasites
Date
2022
Authors
Liffner, B.
Balbin, J.M.
Shami, G.J.
Siddiqui, G.
Strauss, J.
Frölich, S.
Heinemann, G.K.
Edwards, E.M.
Alder, A.
Wichers, J.S.
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Journal article
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Communications Biology, 2022; 5(1):121-1-121-17
Statement of Responsibility
Benjamin Liffner, Juan Miguel Balbin, Gerald J. Shami, Ghizal Siddiqui, Jan Strauss, Sonja Frölich, Gary K. Heinemann, Ella May Edwards, Arne Alder, Jan Stephan Wichers, Darren J. Creek, Leann Tilley, Matthew W.A. Dixon, Tim-Wolf Gilberger, Danny W. Wilson
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Abstract
Merozoite invasion of host red blood cells (RBCs) is essential for survival of the human malaria parasite Plasmodium falciparum. Proteins involved with RBC binding and invasion are secreted from dual-club shaped organelles at the apical tip of the merozoite called the rhoptries. Here we characterise P. falciparum Cytosolically Exposed Rhoptry Leaflet Interacting protein 2 (PfCERLI2), as a rhoptry bulb protein that is essential for merozoite invasion. Phylogenetic analyses show that cerli2 arose through an ancestral gene duplication of cerli1. We show that PfCERLI2 is essential for blood-stage growth and localises to the cytosolic face of the rhoptry bulb. Inducible knockdown of PfCERLI2 led to a proportion of merozoites failing to invade and was associated with elongation of the rhoptry organelle during merozoite development and inhibition of rhoptry antigen processing. These findings identify PfCERLI2 as a protein that has key roles in rhoptry biology during merozoite invasion.
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© The Author(s) 2022. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.