Transcriptional heterogeneity and tightly regulated changes in gene expression during Plasmodium berghei sporozoite development
Author
Bogale, Haikel NPascini, Tales V
Kanatani, Sachie
Sá, Juliana M
Wellems, Thomas E
Sinnis, Photini
Vega-Rodríguez, Joel
Serre, David
Date
2021-03-09Journal
Proceedings of the National Academy of Sciences of the United States of AmericaPublisher
National Academy of SciencesType
Article
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Despite the critical role of Plasmodium sporozoites in malaria transmission, we still know little about the mechanisms underlying their development in mosquitoes. Here, we use single-cell RNA sequencing to characterize the gene expression profiles of 16,038 Plasmodium berghei sporozoites isolated throughout their development from midgut oocysts to salivary glands, and from forced salivation experiments. Our results reveal a succession of tightly regulated changes in gene expression occurring during the maturation of sporozoites and highlight candidate genes that could play important roles in oocyst egress, sporozoite motility, and the mechanisms underlying the invasion of mosquito salivary glands and mammalian hepatocytes. In addition, the single-cell data reveal extensive transcriptional heterogeneity among parasites isolated from the same anatomical site, suggesting that Plasmodium development in mosquitoes is asynchronous and regulated by intrinsic as well as environmental factors. Finally, our analyses show a decrease in transcriptional activity preceding the translational repression observed in mature sporozoites and associated with their quiescent state in salivary glands, followed by a rapid reactivation of the transcriptional machinery immediately upon salivation.Rights/Terms
Copyright © 2021 the Author(s). Published by PNAS.Identifier to cite or link to this item
http://hdl.handle.net/10713/15295ae974a485f413a2113503eed53cd6c53
10.1073/pnas.2023438118
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