Burkholderia pseudomallei, a causative agent of melioidosis, is a Gram-negative facultative intracellular bacterium that can survive and multiply in macrophages. Previously, we demonstrated that B. pseudomallei failed to activate gene expression downstream of the MyD88-independent pathway, particularly the expression of beta interferon (IFN-β) and inducible nitric oxide synthase (iNOS), leading to the inability of macrophages to kill this bacterium.
View Article and Find Full Text PDFBurkholderia pseudomallei, a causative agent of melioidosis, is a facultative intracellular Gram-negative bacterium that can survive and multiply inside the macrophages. Toll-like receptors are one class of pattern recognition receptors (PRRs) that have been documented to play significant role in B. pseudomallei infection.
View Article and Find Full Text PDFBurkholderia pseudomallei is a facultative intracellular Gram-negative bacterium which is capable of surviving and multiplying inside macrophages. B. pseudomallei strain SRM117, a LPS mutant which lacks the O-antigenic polysaccharide moiety, is more susceptible to macrophage killing during the early phase of infection than is its parental wild type strain (1026b).
View Article and Find Full Text PDFBurkholderia pseudomallei is a facultative intracellular gram-negative bacterium that can survive and multiply inside macrophages. One of the mechanisms by which B. pseudomallei escapes macrophage killing is by interfering with the expression of inducible nitric oxide synthase (iNOS).
View Article and Find Full Text PDFWe recently reported that Burkholderia pseudomallei was able to activate the expression of suppressor of cytokine signaling 3 (SOCS3) and cytokine-inducible Src homology 2-containing protein (CIS). In the present study, we presented evidence showing that the induction of these negative regulators was most probably triggered from within rather than at the cell surface of mouse macrophage cell line (RAW264.7) suggesting that macrophage activation most likely requires the interaction of bacteria with a putative host cell cytoplasmic component(s).
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