PMID- 21249212 OWN - NLM STAT- MEDLINE DCOM- 20110802 LR - 20211020 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 6 IP - 1 DP - 2011 Jan 7 TI - Dendritic cells transfected with scFv from Mab 7.B12 mimicking original antigen gp43 induces protection against experimental Paracoccidioidomycosis. PG - e15935 LID - 10.1371/journal.pone.0015935 [doi] LID - e15935 AB - Paracoccidioidomycosis (PCM), endemic in Latin America, is a progressive systemic mycosis caused by Paracoccidioides brasiliensis (P. brasiliensis), which primarily attacks lung tissue. Dendritic cells (DCs) are able to initiate a response in naive T cells, and they also participate in Th-cell education. Furthermore, these cells have been used for therapy in several disease models. Here we transfected DCs with a plasmid (pMAC/PS-scFv) encoding a single chain variable fragment (scFv) of an anti-Id antibody that is capable of mimicking gp43, the main antigenic component of P. brasiliensis. First, Balb/c mice were immunized subcutaneously with pMAC/PS-scFv and, after seven days, scFv protein was presented to the regional lymph nodes cells. Moreover, we showed that the DCs transfected with scFv were capable of efficiently activating proliferation of total lymph node cells and inducing a decrease in lung infection. Therefore, our results suggested that the use of scFv-transfected DCs may be a promising therapy in the paracoccidioidomycosis (PCM) model. FAU - Ferreira, Karen S AU - Ferreira KS AD - Departamento de Ciencias Biologicas do Instituto de Ciencias Ambientais, Quimicas e Farmaceuticas da Universidade Federal de Sao Paulo, Sao Paulo, Brazil. karenspadari@gmail.com FAU - Maranhao, Andrea Q AU - Maranhao AQ FAU - Garcia, Maria C C AU - Garcia MC FAU - Brigido, Marcelo M AU - Brigido MM FAU - Santos, Suelen S AU - Santos SS FAU - Lopes, Jose D AU - Lopes JD FAU - Almeida, Sandro R AU - Almeida SR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110107 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (43 kDa protein, Paracoccidioides) RN - 0 (Antibodies, Anti-Idiotypic) RN - 0 (Antibodies, Monoclonal) RN - 0 (Antigens, Fungal) RN - 0 (Fungal Proteins) RN - 0 (Glycoproteins) RN - 0 (Single-Chain Antibodies) SB - IM MH - Animals MH - Antibodies, Anti-Idiotypic/therapeutic use MH - Antibodies, Monoclonal/therapeutic use MH - Antigens, Fungal/*immunology MH - Dendritic Cells/*immunology/transplantation MH - Fungal Proteins/*immunology MH - Glycoproteins/*immunology MH - Immunotherapy/*methods MH - Lymphocyte Activation MH - Mice MH - Mice, Inbred BALB C MH - Molecular Mimicry MH - Paracoccidioides/*immunology MH - Paracoccidioidomycosis/*prevention & control/therapy MH - Single-Chain Antibodies/genetics/*therapeutic use MH - Transfection PMC - PMC3017565 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2011/01/21 06:00 MHDA- 2011/08/04 06:00 PMCR- 2011/01/07 CRDT- 2011/01/21 06:00 PHST- 2010/09/22 00:00 [received] PHST- 2010/12/02 00:00 [accepted] PHST- 2011/01/21 06:00 [entrez] PHST- 2011/01/21 06:00 [pubmed] PHST- 2011/08/04 06:00 [medline] PHST- 2011/01/07 00:00 [pmc-release] AID - PONE-D-10-02722 [pii] AID - 10.1371/journal.pone.0015935 [doi] PST - epublish SO - PLoS One. 2011 Jan 7;6(1):e15935. doi: 10.1371/journal.pone.0015935.