Induction of immune responses in vivo with small numbers of veiled (dendritic) cells - PubMed (original) (raw)

Induction of immune responses in vivo with small numbers of veiled (dendritic) cells

S C Knight et al. Proc Natl Acad Sci U S A. 1983 Oct.

Abstract

The role of dendritic or veiled cells (VC) from lymph nodes or spleens of rats and mice in initiating immune responses in vivo has been investigated. Host-versus-graft responses were induced by injection of VC from spleens of (C57BL/10 X CBA) F1 mice into the footpads of parental strain (CBA) animals and measured by the increase in the weight of the draining popliteal lymph nodes. The potency of VC to induce the responses was 100-fold greater than that of unseparated spleen cells. The in vivo effect of VC was not limited to this direct allogeneic stimulation because autologous VC could also be used in the induction of an experimental autoimmune disease. In these studies, experimental allergic encephalomyelitis was produced in Lewis rats by injection of guinea pig brain and spinal cord material emulsified in Freund's complete adjuvant. Small numbers of VC from spleens or lymph nodes of rats showing clinical signs of experimental allergic encephalomyelitis induced a mild form of the disease when injected intravenously into normal Lewis rats. Thus, VC carrying antigen, either as an integral part of their surface membrane or acquired during exposure to antigenic substances, appeared to be very potent agents for the induction of immune responses.

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