Dendritic cell expansion occurs in mesenteric lymph nodes of B10.BR mice infected with the murine nematode parasite Trichuris muris
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- Koyama, K. Parasitol Res (2005) 97: 186. doi:10.1007/s00436-005-1427-2
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Dendritic cells (DCs) are a crucial element in the immune system and bridge innate and adaptive immunity. CD11c+ B220− DCs residing in Peyer’s patches (PPs) have the ability to produce interleukin 10 (IL-10) and induce T helper (Th2) development. Evidence suggests that CD11c+ B220− DCs maintain the gut environment by suppressing Th1 responses with IL-10, resulting in a Th2-dominat gut environment. Th2 effectors are required for protection against the murine nematode parasite Trichuris muris, and thus CD11c+ B220− DCs may be involved in the induction of Th2 cells in T. muris infection. In the present study, the kinetics of CD11c+ B220− DCs were analyzed in mesenteric lymph nodes of B10.BR mice infected with the E-J isolate of T. muris, and the cellular expansion of CD11c+ B220− DCs was also observed. As well, the DC expansion was consistent with the occurrence of worm expulsion augmented by IL-4 and IL-13. The evidence here suggests the involvement of CD11c+ B220− DCs in protective Th2 responses to T. muris infection.