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Interaction Between 'Sensitized Lymphocytes' and Antigen in Vitro. IV. Studies on the Mechanism of Release of Skin Reactive and Macrophage Migration-Inhibitory Factors

Interaction Between 'Sensitized Lymphocytes' and Antigen in Vitro. IV. Studies on the Mechanism of Release of Skin Reactive and Macrophage Migration-Inhibitory Factors

E Pick, J L Turk

Immunology. 1972 Jan;22(1):39-49.

PMID: 5013910

Abstract:

Peritoneal exudate lymphocytes (PEL) of guinea-pigs injected with Freund's complete adjuvant (FCA) were capable of liberating skin reactive factor (SRF) and macrophage migration-inhibitory factor (MIF) when cultured for 24 hours in the presence of sheep red cells (SRC) preincubated with lymph node cells (LNC) of guinea-pigs immunized with SRC in FCA. Similar release of soluble mediators was found in the following situations: (a) incubation of non-immune PEL with SRC sensitized with the exclusion peak of Sephadex G-200 fractionated immune LNC supernatant; (b) incubation of non-immune LNC with complexes of SRC and anti-SRC IgG, prepared from serum of animals immunized with SRC in CFA, and (c) incubation of non-immune LNC with a mixture of SRC urea extract and anti-SRC IgG. SRC incubated for 24 hours with immune LNC and freed of lymphocytes by selective filtration through a Millipore filter, were able to provoke an inflammatory reaction in the skin of normal guinea-pigs, which was delayed in character. These findings are interpreted as suggestive evidence for the non-identity of the mediator-producing and antigen-reactive cells and as support for the hypothesis that a complex composed of antigen and an antibody-like material, secreted by stimulated antigen-reactive lymphocytes, is responsible for the release of soluble mediators in cell-mediated immune reactions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42416369	Anti-SRC antibody produced in rabbit			Price

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