The phenotype and fate of the antibody-forming cells of the splenic foci
- Author(s)
- Smith, KGC; Hewitson, TD; Nossal, GJV; Tarlinton, DM;
- Details
- Publication Year 1996-02,Volume 26,Issue #2,Page 444-448
- Journal Title
- EUROPEAN JOURNAL OF IMMUNOLOGY
- Publication Type
- Journal Article
- Abstract
- The first product of the humoral response to antigen is low-affinity antibody, produced by extrafollicular foci of antibody-forming cells (AFC) in organs such as spleen and lymph node. These cells proliferate rapidly but then undergo an equally rapid decline, so that they are present in only small numbers 14 days after immunization. We have used 6-parameter flow cytometry to isolate and examine the characteristics of (4-hydroxy-5-nitrophenyl)acetyl-specific AFC, looking in particular for those markers that might differentiate them from cells of the intrafollicular (germinal center) arm of the T-dependent immune response. At day 7 of the primary response, most AFC were found to express surprisingly low levels of B220. high levels of syndecan. and retain significant levels of surface IgG1. We then used enzyme-linked immunospot assays to demonstrate that the rapid decline of these cells was not likely to be due to migration to organs such as the bone marrow. Their decline could, however, be explained by apoptosis in situ, which was demonstrated immunohistologically by nick-end labeling.
- Publisher
- VCH PUBLISHERS INC
- Keywords
- B-CELLS; IMMUNE-RESPONSE; BONE-MARROW; DEATH; POPULATIONS; EXPRESSION; INSITU; MARKER; INVIVO
- Publisher's Version
- https://doi.org/10.1002/eji.1830260226
- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 1996-02-01 12:00:00