Aedes fluviatilis cell lines as new tools to study metabolic and immune interactions in mosquito-Wolbachia symbiosis.

Sci Rep

Laboratório de Bioquímica de Artrópodes Hematófagos, Laboratório de Bioquímica e Fisiologia de Insetos - IBqM and Laboratório Integrado de Bioquímica Hatisaburo Masuda - NUPEM, Universidade Federal Do Rio de Janeiro - UFRJ, Av. Carlos Chagas Filho, 373, bloco D, subsolo, sala 05. Prédio Do CCS. Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil.

Published: September 2021

In the present work, we established two novel embryonic cell lines from the mosquito Aedes fluviatilis containing or not the naturally occurring symbiont bacteria Wolbachia, which were called wAflu1 and Aflu2, respectively. We also obtained wAflu1 without Wolbachia after tetracycline treatment, named wAflu1.tet. Morphofunctional characterization was performed to help elucidate the symbiont-host interaction in the context of energy metabolism regulation and molecular mechanisms of the immune responses involved. The presence of Wolbachia pipientis improves energy performance in A. fluviatilis cells; it affects the regulation of key energy sources such as lipids, proteins, and carbohydrates, making the distribution of actin more peripheral and with extensions that come into contact with neighboring cells. Additionally, innate immunity mechanisms were activated, showing that the wAflu1 and wAflu1.tet cells are responsive after the stimulus using Gram negative bacteria. Therefore, this work confirms the natural, mutually co-regulating symbiotic relationship between W. pipientis and A. fluviatilis, modulating the host metabolism and immune pathway activation. The results presented here add important resources to the current knowledge of Wolbachia-arthropod interactions.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8478883PMC
http://dx.doi.org/10.1038/s41598-021-98738-7DOI Listing

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