PMID- 8971174 OWN - NLM STAT- MEDLINE DCOM- 19970123 LR - 20061115 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 56 IP - 24 DP - 1996 Dec 15 TI - Retroviral transduction of human dendritic cells with a tumor-associated antigen gene. PG - 5672-7 AB - Dendritic cells (DCs) are potent antigen-presenting cells that can activate quiescent T lymphocytes. When pulsed with tumor-associated antigen (TAA) peptide or protein, murine DCs can provide antitumor immunity. We reasoned that DCs retrovirally transduced with TAA genes might have important advantages over peptide- or protein-pulsed DCs, including long-term TAA presentation in vivo, and presentation of important but undefined epitopes. Therefore, we attempted to retrovirally transduce human DCs with a melanoma TAA gene (MART-1) and determine whether these transduced DCs could raise a specific antitumor response from quiescent autologous T lymphocytes. After retroviral transduction, human CD34+ cells were differentiated into DCs in vitro using granulocyte macrophage colony-stimulating factor, tumor necrosis factor alpha, and stem cell factor. This method consistently yielded a population of DCs as analyzed by morphology, phenotype, and MLR. Flow cytometric analysis revealed that 22-28% of cells expressing the DC phenotype also expressed a transduced marker gene. When DCs were transduced with the gene encoding MART-1, they stimulated much higher levels of cytokine release by MART-1-specific tumor-infiltrating lymphocytes than control DCs transduced with an irrelevant gene. In vitro stimulation using MART-1-transduced DCs but not control-transduced DCs raised specific antitumor CTLs from autologous quiescent T cells. These results provide evidence that human DCs can be retrovirally transduced with a TAA gene and that these transduced cells can raise a specific antitumor immune response in vitro. Transduced DCs may be useful for in vivo immunization against TAA. FAU - Reeves, M E AU - Reeves ME AD - Surgery Branch, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA. FAU - Royal, R E AU - Royal RE FAU - Lam, J S AU - Lam JS FAU - Rosenberg, S A AU - Rosenberg SA FAU - Hwu, P AU - Hwu P LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Antigens, Neoplasm) RN - 0 (Epitopes) SB - IM MH - Antigens, Neoplasm/*genetics/immunology MH - Dendritic Cells/*immunology MH - Epitopes/*genetics/immunology MH - Genetic Vectors/*genetics/immunology MH - Humans MH - Immunity, Cellular MH - Lymphocytes, Tumor-Infiltrating/*immunology MH - Melanoma/*immunology/therapy MH - Retroviridae/*genetics MH - Transfection/genetics/*methods EDAT- 1996/12/15 00:00 MHDA- 1996/12/15 00:01 CRDT- 1996/12/15 00:00 PHST- 1996/12/15 00:00 [pubmed] PHST- 1996/12/15 00:01 [medline] PHST- 1996/12/15 00:00 [entrez] PST - ppublish SO - Cancer Res. 1996 Dec 15;56(24):5672-7.