TY - JOUR
T1 - Mutants of Salmonella typhimurium that cannot survive within the macrophage are avirulent
AU - Fields, P. I.
AU - Swanson, R. V.
AU - Haidaris, C. G.
AU - Heffron, F.
PY - 1986
Y1 - 1986
N2 - Salmonella typhimurium is a facultative intracellular pathogen capable of surviving within phagocytic cells of the reticuloendothelial system. To identify the genes important for intracellular survival, 9516 independent Tn10 insertional mutations were isolated in a virulent strain of S. typhimurium. By using an in vitro assay for survival within macrophages, 83 Tn10 mutants have been identified that have a diminished capacity for intracellular survival (designated MS or macrophage survival mutants). All of the MS mutants are less virulent than the parent strain in vivo, demonstrating that, for Salmonella, survival within the macrophage is essential for virulence. Thirty-seven of the MS mutants have been characterized as to their phenotype, including several mutations that confer sensitivity to specific microbiocidal mechanisms of the macrophage.
AB - Salmonella typhimurium is a facultative intracellular pathogen capable of surviving within phagocytic cells of the reticuloendothelial system. To identify the genes important for intracellular survival, 9516 independent Tn10 insertional mutations were isolated in a virulent strain of S. typhimurium. By using an in vitro assay for survival within macrophages, 83 Tn10 mutants have been identified that have a diminished capacity for intracellular survival (designated MS or macrophage survival mutants). All of the MS mutants are less virulent than the parent strain in vivo, demonstrating that, for Salmonella, survival within the macrophage is essential for virulence. Thirty-seven of the MS mutants have been characterized as to their phenotype, including several mutations that confer sensitivity to specific microbiocidal mechanisms of the macrophage.
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U2 - 10.1073/pnas.83.14.5189
DO - 10.1073/pnas.83.14.5189
M3 - Article
C2 - 3523484
AN - SCOPUS:0011736531
SN - 0027-8424
VL - 83
SP - 5189
EP - 5193
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 14
ER -