CD40-activated B cells express full lymph node homing triad and induce T-cell chemotaxis: potential as cellular adjuvants

Blood. 2006 Apr 1;107(7):2786-9. doi: 10.1182/blood-2004-01-0113. Epub 2005 Dec 15.

Abstract

CD40-activated B cells (CD40-B cells) have previously been introduced as an alternative source of antigen-presenting cells for immunotherapy. CD40-B cells can prime naive and expand memory T cells, and they can be generated in large numbers from very small amounts of peripheral blood derived from healthy individuals or cancer patients alike. Administration of CD40-B cells as a cellular adjuvant would require these cells to migrate toward secondary lymphoid organs and attract T cells in situ, processes guided by specific chemokines and chemokine receptors. Here, we demonstrate that primary, human CD40-B cells express a pattern of adhesion molecules and chemokine receptors necessary for homing to secondary lymphoid organs and have the capacity to migrate to cognate ligands. Furthermore, we show that CD40-B cells express important T-cell attractants and induce strong T-cell chemotaxis. These findings further support the use of CD40-B cells as cellular adjuvant for cancer immunotherapy.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adjuvants, Immunologic / therapeutic use
  • Antigens, CD / immunology
  • CD40 Antigens / immunology*
  • Chemotaxis, Leukocyte* / immunology
  • Humans
  • Immunologic Memory
  • Immunotherapy
  • Nucleic Acid Hybridization
  • Oligonucleotide Array Sequence Analysis
  • RNA / genetics
  • T-Lymphocytes / immunology*
  • T-Lymphocytes / physiology

Substances

  • Adjuvants, Immunologic
  • Antigens, CD
  • CD40 Antigens
  • RNA