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  • Title: The immune response toward beta-adrenergic ligands and their receptors. VIII. Extensive diversity of VH and VL genes encoding anti-alprenolol antibodies.
    Author: Nahmias C, Strosberg AD, Emorine LJ.
    Journal: J Immunol; 1988 Feb 15; 140(4):1304-11. PubMed ID: 3125254.
    Abstract:
    The V region genes (VH and VL) used in the immune response of BALB/c mice to alprenolol, a synthetic beta-adrenergic ligand, were examined by Southern blot and nucleotide sequence analyses. Fourteen anti-alprenolol hybridomas utilize 10 different combinations of six Vk, one V lambda, eight VH, three JK, one J lambda, and three JH genes. In addition to the combinatorial association, somatic mutations and junctional variation of assembled genes further contribute to diversity of the anti-alprenolol response. Although differing both in length and structure, the five H-chain third complementarity-determining region analyzed contain several acidic residues. Neither V gene utilization, nor H-chain third complementarity-determining-region structure can be simply correlated with affinity of the antibodies for the ligand. The anti-alprenolol V genes were compared with the corresponding sequences of unrelated antibodies. Antibody 37A4 shares a VH gene with anti-(Glu60Ala30Tyr10)n random terpolymer and anti-nitrophenyl antibodies, and a Vk gene with two anti-oxazolone antibodies. Antibodies 14C3 and 17C1 use the same germ-line VH and Vk genes as do anti-anti-idiotypic antibodies of the (Glu60Ala30Tyr10) system. These data demonstrate the genetic diversity of the antibody response to alprenolol, and illustrate the extensive flexibility of the immune system.
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