Tissue distribution of mucosal antibody-producing cells specific for respiratory syncytial virus in severe combined immune deficiency (SCID) mice engrafted with human tonsils
Open Access
- 1 September 1991
- journal article
- Published by Oxford University Press (OUP) in Clinical and Experimental Immunology
- Vol. 85 (3), 358-364
- https://doi.org/10.1111/j.1365-2249.1991.tb05732.x
Abstract
SUMMARY: Groups of C.B-17 SCID mice were reconstituted intraperitoneally with human tonsillar mononuclear cells (hu-TMC) from children seropositive for antibody to respiratory syncytial virus (RSV) and subsequently challenged intraperitoneally with inactivated RSV or sham-immunized. The synthesis and the distribution characteristics of human antibody to RSV in various murine tissues were studied using an enzyme-linked immunospot assay (ELISPOT). No specific antibody was observed in sham-immunized animals. In contrast, mice engrafted with hu-TMC exhibited the appearance of specific human antibody secreting cells (hu-ASC) after i.p. immunization with inactivated RSV. RSV-specific hu-ASC were detected only in animals engrafted with cells from donors seropositive for antibodies to Epstein-Barr virus. Hu-TMC engrafted mice showed RSV-specific IgM and, in lower numbers, IgG hu-ASC in several tissues including the lungs. Numbers of RSV-specific IgA hu-ASC were low, however, and detected only in the lung. No RSV-specific hu-ASC were detected in the intestine. These data demonstrate for the first time that hu-TMC-SCID chimeras respond to immunization with viral antigen. Furthermore, the results suggest that hu-TMC engraft in lungs but not in the intestinal tissue.Keywords
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