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Restricted variable region gene usage and possible rheumatoid factor relationship among human monoclonal antibodies specific for the AD-1 epitope on cytomegalovirus glycoprotein B

Publiceringsår: 1994
Språk: Engelska
Sidor: 983-991
Publikation/Tidskrift/Serie: Molecular Immunology
Volym: 31
Nummer: 13
Dokumenttyp: Artikel i tidskrift
Förlag: Pergamon


The nucleotide sequences of the variable region genes encoding five different human, high affinity antibodies, specific for the major neutralization determinant (AD-1) expressed by human cytomegalovirus glycoprotein B (gp58/116), have been determined. Three of the five heavy chain variable regions belonged to the small VHV-family, although they combined with a diverse set of light chains (V kappa IIIb, V lambda II and V lambda III). The other two antibodies belonged to VH-families III and IV. One of the VHV-family genes most likely originated from a previously unreported germline gene or allele, since it carries a nine nucleotide insert in framework 1. In addition, V lambda-genes showed variable homology (77-95%) to known germline sequences, while V kappa-genes showed high homology (approximately 98%) with their proposed germline origin. Despite the close homology of the V kappa IIIb-gene used to express one of the antibodies with its corresponding germline gene, the protein did not strongly express some idiotypes associated with this light chain family. There is, thus, no direct relation between the expression of these crossreactive idiotypes and the use of even modestly mutated light chains belonging to this V kappa-family, which has been implicated in the development of anti-idiotypic networks possibly inducing autoantibodies, such as rheumatoid factors.


  • Immunology in the medical area
  • cytomegalovirus
  • glycoprotein B
  • human monoclonal antibody
  • rheumatoid factor
  • variable region gene


  • ISSN: 1872-9142

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