TY - JOUR
T1 - Invasion and replication of Yersinia ruckeri in fish cell cultures
AU - Menanteau-Ledouble, Simon
AU - Lawrence, Mark L.
AU - El-Matbouli, Mansour
N1 - Funding Information:
This research was financed by the Austrian Science Funds (Fonds zur Förderung der wissenschaftlichen Forschung), project P28837-B22. This funding body played no role in the design of the study or interpretation of data.
Publisher Copyright:
© 2018 The Author(s).
PY - 2018/3/9
Y1 - 2018/3/9
N2 - Background: Like many members of the Enterobacteriaceae family, Yersinia ruckeri has the ability to invade non professional phagocytic cells. Intracellular location is advantageous for the bacterium because it shields it from the immune system and can help it cross epithelial membranes and gain entry into the host. In the present manuscript, we report on our investigation regarding the mechanisms of Y. ruckeri's invasion of host cells. Results: A gentamycin assay was applied to two isolates, belonging to both the biotype 1 (ATCC 29473) and biotype 2 (A7959-11) and using several cell culture types: Atlantic Salmon Kidney, Salmon Head Kidney and, Chinook salmon embryos cells at both low and high passage numbers. Varying degrees of sensitivity to Y. ruckeri infection were found between the cell types and the biotype 1 strain was found to be more invasive than the non-motile biotype 2 isolate. Furthermore, the effect of six chemical compounds (Cytochalasin D, TAE 226, vinblastine, genistein, colchicine and, N-acetylcysteine), known to interfere with bacterial invasion strategies, were investigated. All of these compounds had a significant impact on the ability of the bacterium to invade host cells. Changes in the concentration of bacterial cells over time were investigated and the results suggested that neither isolate could survive intracellularly for sustained periods. Conclusions: These results suggest that Y. ruckeri can gain entrance into host cells through several mechanisms, and might take advantage of both the actin and microtubule cytoskeletal systems.
AB - Background: Like many members of the Enterobacteriaceae family, Yersinia ruckeri has the ability to invade non professional phagocytic cells. Intracellular location is advantageous for the bacterium because it shields it from the immune system and can help it cross epithelial membranes and gain entry into the host. In the present manuscript, we report on our investigation regarding the mechanisms of Y. ruckeri's invasion of host cells. Results: A gentamycin assay was applied to two isolates, belonging to both the biotype 1 (ATCC 29473) and biotype 2 (A7959-11) and using several cell culture types: Atlantic Salmon Kidney, Salmon Head Kidney and, Chinook salmon embryos cells at both low and high passage numbers. Varying degrees of sensitivity to Y. ruckeri infection were found between the cell types and the biotype 1 strain was found to be more invasive than the non-motile biotype 2 isolate. Furthermore, the effect of six chemical compounds (Cytochalasin D, TAE 226, vinblastine, genistein, colchicine and, N-acetylcysteine), known to interfere with bacterial invasion strategies, were investigated. All of these compounds had a significant impact on the ability of the bacterium to invade host cells. Changes in the concentration of bacterial cells over time were investigated and the results suggested that neither isolate could survive intracellularly for sustained periods. Conclusions: These results suggest that Y. ruckeri can gain entrance into host cells through several mechanisms, and might take advantage of both the actin and microtubule cytoskeletal systems.
KW - Atlantic Salmon kidney cells
KW - Chinook Salmon embryo cells
KW - Gentamycin assay
KW - Intracellular invasion
KW - Salmon head kidney cells
UR - http://www.scopus.com/inward/record.url?scp=85043470226&partnerID=8YFLogxK
U2 - 10.1186/s12917-018-1408-1
DO - 10.1186/s12917-018-1408-1
M3 - Journal article
C2 - 29523132
AN - SCOPUS:85043470226
SN - 1746-6148
VL - 14
JO - BMC Veterinary Research
JF - BMC Veterinary Research
IS - 1
M1 - 81
ER -