Open AccessTRANSDUCTION OF DENDRITIC CELL PROGENITORS WITH A RETROVIRAL VECTOR ENCODING VIRAL INTERLEUKIN-10 AND ENHANCED GREEN FLUORESCENT PROTEIN ALLOWS PURIFICATION OF POTENTIALLY TOLEROGENIC ANTIGEN-PRESENTING CELLS1,2
Author(s) -
Takuya Takayama,
Hideaki Tahara,
Angus W. Thomson
Publication year - 1999
Publication title -
transplantation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.45
H-Index - 204
eISSN - 1534-6080
pISSN - 0041-1337
DOI - 10.1097/00007890-199912270-00015
Subject(s) - viral vector , transduction (biophysics) , flow cytometry , cell sorting , biology , antigen , cytotoxic t cell , microbiology and biotechnology , t cell , dendritic cell , green fluorescent protein , progenitor cell , immune system , stem cell , immunology , gene , in vitro , recombinant dna , biochemistry
Dendritic cells (DC) are important antigen-presenting cells that play critical roles in the initiation and modulation of immune responses. Genetic engineering of DC to express immunosuppressive molecules is a novel approach to the inhibition of allograft rejection. Retroviral delivery of viral interleukin (vIL)-10 to replicating myeloid DC progenitors (DCp) impairs their T-cell stimulatory capacity and promotes the induction of antigen-specific T-cell hyporesponsiveness. However, transduction efficiency with retroviral vectors is comparatively low. Enhanced green fluorescent protein (EGFP) is important both as a marker of gene transduction and for the selection of transduced cells. Our aims were to construct a retroviral vector encoding both vIL-10 and EGFP, to positively select transduced DC, and to assess the impact of these highly purified, vIL-10-secreting antigen-presenting cells on allogeneic T-cell responses.