Cutting Edge: A New Approach to Modeling Early Lung Immunity in Murine Tuberculosis
Author(s) -
Kamlesh Bhatt,
Somia P. Hickman,
Padmini Salgame
Publication year - 2004
Publication title -
the journal of immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.737
H-Index - 372
eISSN - 1550-6606
pISSN - 0022-1767
DOI - 10.4049/jimmunol.172.5.2748
Subject(s) - priming (agriculture) , c c chemokine receptor type 7 , mycobacterium tuberculosis , immunology , immunity , tuberculosis , acquired immune system , lymph , biology , t cell , medicine , immune system , pathology , chemokine , botany , germination , chemokine receptor
In this study, we report a new approach that allows dissection of distinct pathways regulating induction of early adaptive immunity in response to Mycobacterium tuberculosis (Mtb). We used traceable murine dendritic cells (DCs) and macrophage populations to chart their migratory pattern in response to Mtb, and found that only DCs receiving inflammatory stimuli from Mtb up-regulated their expression of CCR7 and migrated specifically to the draining lymph nodes (LNs). Furthermore, these Mtb-modulated DCs initiated a Th1 response only in the draining LNs. Taken together, these results demonstrate that Mtb-induced modulation of DCs is critical for their migration to regional LNs and ensuing T cell priming.
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