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. 1955 Jan 1;101(1):85-108.
doi: 10.1084/jem.101.1.85.

Immunological relationships among the myeloma proteins

R J SLATER, S M WARD, H G KUNKEL

Immunological relationships among the myeloma proteins

R J SLATER et al. J Exp Med. .

Abstract

An immunological study of 21 myeloma sera was carried out to determine their relationship to components of normal gamma-globulin and to each other. Ten proteins were separated for detailed characterization. Every one of the myeloma proteins studied was immunologically different, indicating individual specificity. The gamma-type myeloma proteins were all related to normal gamma-globulin or a fraction thereof, and although each was distinct from the others, all were related. The beta-type myeloma proteins likewise were related to one another, though individually specific. Evidence was found favoring the view that some of the gamma-type myeloma proteins are related to the beta-type myeloma proteins although most of them were completely unrelated. Likewise the results indicated a definite but distant relationship between the beta-myeloma proteins and normal gamma-globulin. Certain of the beta-myeloma proteins were more closely related to a fraction of normal serum of similar electrophoretic mobility. It is suggested that most multiple myeloma proteins fall into two groups or families of cross-reacting abnormal proteins, one closely related to normal gamma-globulin, the other distantly related to gamma-globulin with marked individual specificities.

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