PMID- 16110810 OWN - NLM STAT- MEDLINE DCOM- 20051007 LR - 20190513 IS - 1369-3786 (Print) IS - 1369-3786 (Linking) VI - 43 Suppl 1 DP - 2005 May TI - Immunity to Aspergillus fumigatus: the basis for immunotherapy and vaccination. PG - S181-8 AB - Efficient responses to fungi require different mechanisms of immunity. Dendritic cells (DCs) are uniquely able to decode the fungus-associated information and translate it into qualitatively different T helper (Th) immune responses. Murine and human DCs phagocytose conidia and hyphae of Aspergillus fumigatus through distinct recognition receptors. The engagement of distinct receptors translates into disparate downstream signaling events, ultimately affecting cytokine production and co-stimulation. Adoptive transfer of different types of DCs activates protective and non-protective Th cells as well as regulatory T cells, ultimately affecting the outcome of the infection in mice with invasive aspergillosis. The infusion of fungus-pulsed or RNA-transfected DCs also accelerates recovery of functional antifungal Th 1 responses in mice with allogeneic hematopoietic stem cell transplantation. Patients receiving T cell-depleted allogeneic hematopoietic stem cell transplantation are unable to develop antigen-specific T cell responses soon after transplant due to defective DC functions. Our results suggest that the adoptive transfer of DCs may restore immunocompetence in hematopoietic stem cell transplantation by contributing to the educational program of T cells. Thus, the remarkable furictional plasticity of DCs can be exploited for the deliberate targeting of cells and pathways of cell-mediated immunity in response to the fungus. FAU - Bellocchio, S AU - Bellocchio S AD - Microbiology Section, Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy. FAU - Bozza, S AU - Bozza S FAU - Montagnoli, C AU - Montagnoli C FAU - Perruccio, K AU - Perruccio K FAU - Gaziano, R AU - Gaziano R FAU - Pitzurra, L AU - Pitzurra L FAU - Romani, L AU - Romani L LA - eng PT - Journal Article PT - Review PL - England TA - Med Mycol JT - Medical mycology JID - 9815835 SB - IM MH - Adoptive Transfer MH - Animals MH - Aspergillosis/*immunology/microbiology/*therapy MH - Aspergillus fumigatus/*immunology/pathogenicity MH - Dendritic Cells/*immunology/*transplantation MH - Hematopoietic Stem Cell Transplantation MH - Humans MH - Immunotherapy MH - Mice MH - Vaccination RF - 77 EDAT- 2005/08/23 09:00 MHDA- 2005/10/08 09:00 CRDT- 2005/08/23 09:00 PHST- 2005/08/23 09:00 [pubmed] PHST- 2005/10/08 09:00 [medline] PHST- 2005/08/23 09:00 [entrez] AID - 10.1080/14789940500051417 [doi] PST - ppublish SO - Med Mycol. 2005 May;43 Suppl 1:S181-8. doi: 10.1080/14789940500051417.