PMID- 15010371 OWN - NLM STAT- MEDLINE DCOM- 20040827 LR - 20210206 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 104 IP - 1 DP - 2004 Jul 1 TI - Human B cells that hyperexpress a triad of costimulatory molecules via avipox-vector infection: an alternative source of efficient antigen-presenting cells. PG - 192-9 AB - Dendritic cells (DCs) are the most potent of the antigen-presenting cells (APCs). Preparation of sufficient numbers of mature DCs, however, is both costly and time-consuming. We have examined here the possibility of using an alternative source of APCs that would be easier to obtain, would not require extensive culture, and thus would be more applicable to human immunotherapy protocols. We show here that freshly isolated human B cells can be efficiently infected by a replication-defective fowlpox recombinant vector, designated rF-TRICOM (TRIad of COstimulatory Molecules), to markedly increase surface expression of the human costimulatory molecule B7-1 and moderately increase expression of intercellular adhesion molecule-1 (ICAM-1) and leukocyte function-associated antigen-3 (LFA-3). Peptide-pulsed rF-TRICOM-infected B cells were highly efficient in activating antigen-specific human T cells and shown to be superior to the use of CD40L in enhancing APC potency. Moreover, when infection of freshly isolated B cells with rF-TRICOM was combined with CD40L, a still further marked enhancement of the antigen-presenting potency was observed. Ex vivo-generated antigen-specific T cells activated in this manner might be applied to experimental protocols or used for adoptive transfer in immunotherapy protocols. FAU - Palena, Claudia AU - Palena C AD - Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA. FAU - Zhu, MingZhu AU - Zhu M FAU - Schlom, Jeffrey AU - Schlom J FAU - Tsang, Kwong-Yok AU - Tsang KY LA - eng PT - Journal Article DEP - 20040309 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (B7-1 Antigen) RN - 0 (CD58 Antigens) RN - 0 (Carcinoembryonic Antigen) RN - 0 (Peptides) RN - 0 (Viral Proteins) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - 147205-72-9 (CD40 Ligand) RN - 82115-62-6 (Interferon-gamma) RN - EC 3.4.21.77 (Prostate-Specific Antigen) SB - IM MH - Antigen-Presenting Cells/*immunology/metabolism/virology MH - B-Lymphocytes/*immunology/metabolism/*virology MH - B7-1 Antigen/*biosynthesis/immunology MH - CD40 Ligand/immunology MH - CD58 Antigens/*biosynthesis/immunology MH - CD8-Positive T-Lymphocytes/immunology/metabolism MH - Carcinoembryonic Antigen/immunology MH - Cell Line MH - Fowlpox virus/genetics/*immunology MH - Gene Expression MH - Genetic Vectors/genetics MH - Herpesvirus 4, Human/genetics/immunology MH - Humans MH - Intercellular Adhesion Molecule-1/*biosynthesis/immunology MH - Interferon-gamma/biosynthesis MH - Leukocytes, Mononuclear/cytology MH - Lymphocyte Activation/immunology MH - Papillomaviridae/immunology MH - Peptides/immunology/metabolism MH - Phenotype MH - Prostate-Specific Antigen/immunology MH - Viral Proteins/chemistry/metabolism EDAT- 2004/03/11 05:00 MHDA- 2004/08/28 05:00 CRDT- 2004/03/11 05:00 PHST- 2004/03/11 05:00 [pubmed] PHST- 2004/08/28 05:00 [medline] PHST- 2004/03/11 05:00 [entrez] AID - S0006-4971(20)54525-4 [pii] AID - 10.1182/blood-2003-09-3211 [doi] PST - ppublish SO - Blood. 2004 Jul 1;104(1):192-9. doi: 10.1182/blood-2003-09-3211. Epub 2004 Mar 9.