PMID- 15871684 OWN - NLM STAT- MEDLINE DCOM- 20050823 LR - 20081121 IS - 1043-0342 (Print) IS - 1043-0342 (Linking) VI - 16 IP - 4 DP - 2005 Apr TI - Lentiviral vector-transduced dendritic cells induce specific T cell response in a nonhuman primate model. PG - 527-32 AB - Dendritic cells (DCs) are effective in stimulating and controlling the outcome of T cell responses. Human immunodeficiency virus type 1-based lentiviral vectors can achieve sustained transduction of genes/antigens in dividing and nondividing cells, thus representing a candidate vector for stable expression of antigens in DCs. We previously established conditions for transduction of purified cytokine mobilized rhesus CD34(+) cells in vitro, and transplantation of the autologous transduced cells in a nonhuman primate model in vivo. In the present study, we transplanted DCs derived from EGFP-transduced CD34(+) cells into nonmyeloablated rhesus macaques. Transplantation of DCs stably expressing EGFP into autologous animals induces persistent, long-lived (up to 100 weeks) EGFP-specific T cell responses. Of note, no humoral responses against EGFP are detected in the transplanted animals. These studies provide, to our knowledge, the first demonstration that lentiviral transduction of CD34(+) progenitor cells subsequently differentiated to DCs is capable of priming a specific T cell response in a nonhuman primate in vivo. Taken together, our data provide formal in vivo evidence that lentivirus-transduced dendritic cells represent a potential approach in eliciting cellular immune responses in primates. FAU - Kung, Sam K P AU - Kung SK AD - Department of Microbiology and Immunology and Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA. FAU - Bonifacino, Aylin AU - Bonifacino A FAU - Metzger, Mark E AU - Metzger ME FAU - Ringpis, Gene-Errol AU - Ringpis GE FAU - Donahue, Robert E AU - Donahue RE FAU - Chen, Irvin S Y AU - Chen IS LA - eng GR - P30 AI28697/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Hum Gene Ther JT - Human gene therapy JID - 9008950 RN - 0 (Antigens, CD34) RN - 0 (Immune Sera) RN - 147336-22-9 (Green Fluorescent Proteins) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - Antibody Formation MH - Antigens, CD34/genetics/immunology MH - Cell Transplantation/methods MH - Cells, Cultured MH - Dendritic Cells/*immunology/physiology MH - Genetic Vectors/adverse effects/genetics MH - Green Fluorescent Proteins/genetics/immunology MH - Humans MH - Immune Sera MH - Interferon-gamma/pharmacology MH - Lentivirus/*genetics MH - Macaca mulatta MH - Primates MH - Stem Cells/immunology/physiology MH - T-Lymphocytes/*immunology MH - Transduction, Genetic/*methods EDAT- 2005/05/06 09:00 MHDA- 2005/08/24 09:00 CRDT- 2005/05/06 09:00 PHST- 2005/05/06 09:00 [pubmed] PHST- 2005/08/24 09:00 [medline] PHST- 2005/05/06 09:00 [entrez] AID - 10.1089/hum.2005.16.527 [doi] PST - ppublish SO - Hum Gene Ther. 2005 Apr;16(4):527-32. doi: 10.1089/hum.2005.16.527.