The B7-2 (B70) costimulatory molecule expressed by monocytes and activated B lymphocytes is the CD86 differentiation antigen.

Journal Article

T-cell activation is initiated after T-cell receptor binding to antigen, but also requires interactions between costimulatory molecules expressed on antigen-presenting cells. An important costimulatory molecule expressed by monocytes and activated B lymphocytes has been recently identified and termed B7-2 or B70. Independently, a new Cluster of Differentiation was defined in the Fifth International Leukocyte Differentiation Antigen Workshop as CD86, a molecule predominantly expressed by monocytes and activated B lymphocytes. In this study, the two monoclonal antibodies that defined CD86, FUN-1 and BU-63, were shown to bind to cDNA transfected cells expressing B7-2/B70. The FUN-1 monoclonal antibody also completely blocked the costimulatory activity of B7-2/B70 in functional assays. Therefore, the serologically defined CD86 differentiation antigen is the B7-2/B70 molecule.

Full Text

Duke Authors

Cited Authors

  • Engel, P; Gribben, JG; Freeman, GJ; Zhou, LJ; Nozawa, Y; Abe, M; Nadler, LM; Wakasa, H; Tedder, TF

Published Date

  • September 1, 1994

Published In

Volume / Issue

  • 84 / 5

Start / End Page

  • 1402 - 1407

PubMed ID

  • 7520767

Pubmed Central ID

  • 7520767

International Standard Serial Number (ISSN)

  • 0006-4971


  • eng

Conference Location

  • United States