PMID: 8381174Jan 1, 1993Paper

Lymphoproliferative disease in SCID mice reconstituted with human Sjögren's syndrome lymphocytes

Journal of Clinical Laboratory Analysis
R FoxH I Kang


Patients with Sjögren's syndrome (SS) have increased frequency of non-Hodgkin's B-cell lymphoma. These lymphomas frequently use a specific subclass of kappa light chain (encoded by variable region gene segment Hum KV325) and exhibit bcl-2 protooncogene translocation t(14;18). In order to determine whether expansion of this B-cell subset could be reproduced in an animal model, immunodeficient SCID (CB-17) mice were reconstituted with lymphocytes from 4 different SS patients at high risk of the development of lymphoma. Tumor-like nodules developed in all 11 SCID mice that received at least 5 x 10(5) lymphocytes from SS salivary glands or peripheral blood samples. However, the tumor-like nodules in the SCID mice differed from SS lymphomas in vivo in that they (1) exhibited multiple immunoglobulin gene rearrangements; (2) did not have expansion of B-cells expressing the Hum KV325 K-light chain; and (3) lacked detectable t(14;18) translocations. Characterization of the SCID tumor-like nodules revealed a high level of Epstein-Barr virus (EBV) DNA, EBV-associated antigens (EA-R, EBNA-2, AND LMP), and the EBV-encoded cytokine BCRF-1 that is structurally similar to IL-10. These results demonstrate that the lymphoproliferation occurring ...Continue Reading


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