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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Interleukin-6 regulates the phenotype of the immune response to a tuberculosis subunit vaccine.

We investigated the role of interleukin-6 (IL-6) in the development of the immune response to a subunit vaccine against tuberculosis consisting of the culture filtrate proteins of Mycobacterium tuberculosis emulsified in the adjuvant dimethyldioctadecylammonium bromide (DDA). C57Bl/6 mice immunized with this vaccine developed a strong T helper 1 ( Th1) response characterized by an increased production of interferon-gamma (IFN-gamma) secreted by CD4+ T cells. Neutralization of IL-6 during in vivo priming resulted in marked reduction in the ability of T cells to secrete IFN-gamma and IL-2 and to proliferate. IL-6 gene-disrupted mice primed with the vaccine showed a decrease in the number of IFN-gamma- producing cells and an increase in IL-4-secreting cells as compared to control mice. In contrast, neutralization of IL-6 during a boost of the vaccine in previously primed mice did not affect the development of IFN-gamma- producing cells but still increased the number of IL-4-producing cells. Our work shows that IL-6 plays a major role in the priming but not in the later expression of a Th1 response to a tuberculosis vaccine.[1]

References

  1. Interleukin-6 regulates the phenotype of the immune response to a tuberculosis subunit vaccine. Leal, I.S., Flórido, M., Andersen, P., Appelberg, R. Immunology (2001) [Pubmed]
 
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