Open AccessPersistence of a rheumatoid factor (RF)‐producing B cell clone with a somatically mutated Igκ chain in a patient with rheumatoid arthritis
Author(s) -
SCHRAUDER A.,
GAUSE A.,
JUNG W.,
MIERAU R.,
PFREUNDSCHUH M.
Publication year - 1994
Publication title -
clinical & experimental immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.329
H-Index - 135
eISSN - 1365-2249
pISSN - 0009-9104
DOI - 10.1111/j.1365-2249.1994.tb06068.x
Subject(s) - rheumatoid arthritis , rheumatoid factor , immunology , gene , germline mutation , somatic cell , germline , clone (java method) , biology , medicine , mutation , genetics , cancer research
SUMMARY The VκIV gene encoding the light chain of an IgA RF has been shown to have undergone 31 somatic mutations compared with the single existing VκIV germ‐line gene. We now show the persistence of the rearranged and mutated DNA coding for this RF over a period of 5 years in the peripheral blood lymphocytes (PBL) of the patient with rheumatoid arthritis (RA). The sequence of the RF has been conserved to identity over this period. These results raise the possibility that the particular antigenic stimulus leading to RF production in this RA patient is active over a long period of time.