X-chromosome-linked immune-deficient mice have B-1b cells.
Immunology 2003;
108:440-51. [PMID:
12667205 PMCID:
PMC1782925 DOI:
10.1046/j.1365-2567.2003.01624.x]
[Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2002] [Revised: 12/05/2002] [Accepted: 01/30/2003] [Indexed: 11/20/2022] Open
Abstract
The B lymphocyte subsets of X-chromosome-linked immune-deficient (XID) mice were examined by flow cytometric analyses of spleen and peritoneal cells. As shown in prior studies, young adult XID mice had reduced representation of the CD5+ (B-1a) subset in their peritoneal cavity. However, the CD11b+ (B-1b) B-cell subset was present and exhibited the IgM(hi) CD45(lo) CD23- phenotype characteristic of most B-1 cells. Although present at a lower frequency than that found in their normal counterparts, B-1b cells were evident in CBA/N and (XD2J)F1 male mice. With increasing age, B-1b cell number increased and in the oldest XID mice were present as B-cell chronic lymphocytic leukaemia. These results show that XID mice do have B-1 cells, particularly the B-1b subset.
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