title: Adenovirally transduced dendritic cells induce bispecific cytotoxic T lymphocyte responses against adenovirus and cytomegalovirus pp65 or against adenovirus and Epstein-Barr virus EBNA3C protein: a novel approach for immunotherapy.
abstract: Cytomegalovirus (CMV), Epstein-Barr virus (EBV), and adenovirus (Ad) cause significant morbidity and mortality in immunocompromised patients undergoing allogeneic stem cell transplantation. We have established a procedure to generate polyclonal cytotoxic T lymphocyte (CTL) populations with specificity against Ad and CMV or against Ad and EBV. Healthy donor-derived dendritic cells (DCs) were transduced with recombinant adenovirus encoding either CMV pp65 or EBV EBNA3C and used to stimulate autologous T cells. Stimulated T lymphocytes displayed specific simultaneous cytotoxicity against CMV and adenovirus and to a lesser extent against adenovirus and EBV. Recombinant vaccinia virus encoding individual adenovirus proteins showed that the T cell response to the adenovirus was directed mainly against the capsid protein hexon. The frequency of IFN-gamma-secreting T cells was 0.02% for adenovirus alone, and 0.05 and 0.14% for adenoviruses encoding EBNA3C and pp65, respectively. pp65-specific CTLs killed autologous fibroblasts infected with the laboratory strain CMV AD169. The culture conditions were specific as alloreactive T cells were not expanded. Therefore, this approach could be considered in order to generate efficient virus cytolytic T cells to be used as adoptive immunotherapy in transplanted patients.
authors.affiliation: INSERM U429, Hôpital Necker-Enfants Malades, 75743 Paris Cedex 15, France.
authors.forename: Yamina
authors.initials: Y
authors.lastname: Hamel
authors.forename: Neil
authors.initials: N
authors.lastname: Blake
authors.forename: Susanne
authors.initials: S
authors.lastname: Gabrielsson
authors.forename: Tracey
authors.initials: T
authors.lastname: Haigh
authors.forename: Karin
authors.initials: K
authors.lastname: Jooss
authors.forename: Chantal
authors.initials: C
authors.lastname: Martinache
authors.forename: Sophie
authors.initials: S
authors.lastname: Caillat-Zucman
authors.forename: Alan B
authors.initials: AB
authors.lastname: Rickinson
authors.forename: Salima
authors.initials: S
authors.lastname: Hacein-Bey
authors.forename: Alain
authors.initials: A
authors.lastname: Fischer
authors.forename: Marina
authors.initials: M
authors.lastname: Cavazzana-Calvo
mesh_terms: D000256:Adenoviridae / Q000235:genetics*; D002469:Cell Separation; D003713:Dendritic Cells / Q000378:metabolism*; D005347:Fibroblasts / Q000378:metabolism; D005434:Flow Cytometry; D018014:Gene Transfer Techniques; D049452:Green Fluorescent Proteins; D006801:Humans; D007167:Immunotherapy / Q000379:methods*; D007371:Interferon-gamma / Q000378:metabolism; D008164:Luminescent Proteins / Q000378:metabolism; D008856:Microscopy, Fluorescence; D010750:Phosphoproteins / Q000235:genetics / Q000378:metabolism*; D010957:Plasmids / Q000378:metabolism; D013602:T-Lymphocytes, Cytotoxic / Q000378:metabolism* / Q000821:virology*; D013997:Time Factors; D014161:Transduction, Genetic; D014763:Viral Matrix Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: D008164:Luminescent Proteins; D010750:Phosphoproteins; D014763:Viral Matrix Proteins; C065418:cytomegalovirus matrix protein 65kDa; D049452:Green Fluorescent Proteins; D007371:Interferon-gamma