PMID- 11533211 OWN - NLM STAT- MEDLINE DCOM- 20011011 LR - 20181113 IS - 0022-538X (Print) IS - 1098-5514 (Electronic) IS - 0022-538X (Linking) VI - 75 IP - 19 DP - 2001 Oct TI - Adeno-associated virus type 2-mediated transduction of human monocyte-derived dendritic cells: implications for ex vivo immunotherapy. PG - 9493-501 AB - Dendritic cells (DCs) are pivotal antigen-presenting cells for regulating immune responses. A major focus of contemporary vaccine research is the genetic modification of DCs to express antigens or immunomodulatory molecules, utilizing a variety of viral and nonviral vectors, to induce antigen-specific immune responses that ameliorate disease states as diverse as malignancy, infection, autoimmunity, and allergy. The present study has evaluated adeno-associated virus (AAV) type 2 as a vector for ex vivo gene transfer to human peripheral blood monocyte (MO)-derived DCs. AAV is a nonpathogenic parvovirus that infects a wide variety of human cell lineages in vivo and in vitro, for long-term transgene expression without requirements for cell proliferation. The presented data demonstrate that recombinant AAV (rAAV) can efficiently transduce MOs as well as DCs generated by MO culture with granulocyte-macrophage colony-stimulating factor plus interleukin in vitro. rAAV transgene expression in MO-derived DCs could be enhanced by etoposide, previously reported to enhance AAV gene expression. rAAV transduction of freshly purified MO followed by 7 days of culture with cytokines to generate DCs, and subsequent sorting for coexpression of DC markers CD1a and CD40, showed robust transgene expression as well as evidence of nuclear localization of the rAAV genome in the DC population. Phenotypic analyses using multiple markers and functional assays of one-way allogeneic mixed leukocyte reactions indicated that rAAV-transduced MO-derived DCs were as equivalent to nontransduced DCs. These results support the utility of rAAV vectors for future human DC vaccine studies. FAU - Ponnazhagan, S AU - Ponnazhagan S AD - Department of Pathology, University of Alabama at Birmingham, 35294-0007, USA. sponnazh@path.uab.edu FAU - Mahendra, G AU - Mahendra G FAU - Curiel, D T AU - Curiel DT FAU - Shaw, D R AU - Shaw DR LA - eng GR - P50 CA083591/CA/NCI NIH HHS/United States GR - R01 CA086881/CA/NCI NIH HHS/United States GR - 5 P50-CA83591/CA/NCI NIH HHS/United States GR - R01 CA86881-01/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Virol JT - Journal of virology JID - 0113724 SB - IM MH - Antigen Presentation/genetics MH - Cell Differentiation/immunology MH - Dendritic Cells/*immunology/pathology MH - Dependovirus/*genetics MH - *Genetic Vectors MH - Humans MH - *Immunotherapy MH - Monocytes/immunology/pathology MH - Transfection PMC - PMC114516 EDAT- 2001/09/05 10:00 MHDA- 2001/10/12 10:01 PMCR- 2001/10/01 CRDT- 2001/09/05 10:00 PHST- 2001/09/05 10:00 [pubmed] PHST- 2001/10/12 10:01 [medline] PHST- 2001/09/05 10:00 [entrez] PHST- 2001/10/01 00:00 [pmc-release] AID - 0845 [pii] AID - 10.1128/JVI.75.19.9493-9501.2001 [doi] PST - ppublish SO - J Virol. 2001 Oct;75(19):9493-501. doi: 10.1128/JVI.75.19.9493-9501.2001.