Abstract
The transducing vector, pSV2-neo, carrying the rearranged immunoglobulin (Ig) heavy (mu) and light (kappa) chain genes specific for the hapten 2,4,6-trinitrophenyl (TNP) was introduced into a pre-B cell line. The transformants expressed the TNP-specific IgM receptor on the surface. Furthermore, the addition of TNP-bovine serum albumin (hapten-carrier conjugate) to the culture media activated the expression of the transferred Ig genes and several endogenous genes such as v-abl and beta-tubulin. However, expression of the beta2-microglobulin gene was not affected. The results presented in this paper show that transfection of cloned Ig genes into B cells is a useful system for establishing monoclonal B cell lines expressing functional Ig receptor molecules with defined hapten specificity.
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