Abstract
This study aimed to evaluate the participation of actin and tubulin in the process of internalisation, the interaction of bacterial phagosomes with lysosomes, the morphometric changes and the expression of inflammatory cytokines in Caco-2 cells infected with Campylobacter jejuni. Both actin and tubulin participated in the process of internalisation. Inside the cells, lysosomes fuse with phagosomes, which may lead to bacterial death because after 2 h, the bacteria were not detected by Transmission electron microscopy (TEM). There is increased expression of TGF-β3 during the early stages, and IL-8 was expressed after 60 min p.i. This work showed that C. jejuni invades and causes major morphometric changes in epithelial cells. In response, the cells increase their expression of cytokines that can lead to inflammation. The mechanisms of invasion are dependent on actin and tubulin, and once internalised, lysosomes fuse with phagosomes.




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This study was financed by the “Fundaçãode Amparo a Pesquisa de Minas Gerais” (FAPEMIG) and “Conselho Nacional de Desenvolvimento Científico e Tecnológico” (CNPq).
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Fonseca, B.B., Santos, I.L., Rossi, D.A. et al. Participation of the Cytoskeletal and Lysosomal Compartments in Campylobacter jejuni Invasion of Caco-2 cells, the Cellular Response by Morphometric Analysis and the Presence of Cytokine and Chemokine Transcripts. Indian J Microbiol 53, 155–162 (2013). https://doi.org/10.1007/s12088-012-0324-5
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DOI: https://doi.org/10.1007/s12088-012-0324-5


