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Coordinated activity of amoebic formin and profilin are essential for phagocytosis
R. Bharadwaj, , Somlata
Published in John Wiley and Sons Inc
2021
PMID: 34278607
Volume: 116
   
Issue: 3
Pages: 974 - 995
Abstract
For the protist parasite Entamoeba histolytica, endocytic processes, such as phagocytosis, are essential for its survival in the human gut. The actin cytoskeleton is involved in the formation of pseudopods and phagosomal vesicles by incorporating a number of actin-binding and modulating proteins along with actin in a temporal manner. The actin dynamics, which comprises polymerization, branching, and depolymerization is very tightly regulated and takes place directionally at the sites of initiation of phagocytosis. Formin and profilin are two actin-binding proteins that are known to regulate actin cytoskeleton dynamics and thereby, endocytic processes. In this article, we report the participation of formin and profilin in E. histolytica phagocytosis and propose that these two proteins interact with each other and their sequential recruitment at the site is required for the successful completion of phagocytosis. The evidence is based on detailed microscopic, live imaging, interaction studies, and expression downregulation. The cells downregulated for expression of formin show absence of profilin at the site of phagocytosis, whereas downregulation of profilin does not affect formin localization. © 2021 John Wiley & Sons Ltd
About the journal
JournalData powered by TypesetMolecular Microbiology
PublisherData powered by TypesetJohn Wiley and Sons Inc
ISSN0950382X