PMID- 21543119 OWN - NLM STAT- MEDLINE DCOM- 20111214 LR - 20110711 IS - 1878-1667 (Electronic) IS - 0147-9571 (Linking) VI - 34 IP - 4 DP - 2011 Jul TI - Systemic and mucosal immunity induced by attenuated Salmonella enterica serovar Typhimurium expressing ORF7 of porcine reproductive and respiratory syndrome virus. PG - 335-45 LID - 10.1016/j.cimid.2011.04.001 [doi] AB - Oral administration of attenuated Salmonella vaccine may provide valuable advantages such as low cost, easy preparation, and safety. Attenuated Salmonella vaccines also serve as carriers of foreign antigens and immunomodulatory cytokines. Presently, an attenuated Salmonella enterica serovar Typhimurium strain was used as a carrier for open reading frame 7 (ORF7) protein of porcine reproductive and respiratory syndrome virus (PRRSV), a swine pathogen of significant global economic importance. Initially, an attenuated S. enterica serovar Typhimurium expressing ORF7 gene derived from PRRSV Korean isolate was constructed. Following oral administration of a single dose of the attenuated Salmonella vaccine expressing PRRSV ORF7, humoral and cell-mediated immune responses specific for ORF7 were induced at both systemic and mucosal sites including spleen, mesenteric lymph node, Peyer's patch, and laminar propria, as evaluated by determining serum ORF7-specific IgG and mucosal IgA responses, as well as Th1- and Th2-type cytokine production from antigen-stimulated T cells. The induced humoral responses were sustained for at least 12weeks post-immunization. In particular, the immunized mice displayed immune responses to both the foreign ORF7 antigen and Salmonella itself. The results indicate the value of attenuated S. enterica serovar Typhimurium as an oral carrier of PRRSV antigenic proteins to induce effective systemic and mucosal immunity. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Han, Young Woo AU - Han YW AD - College of Veterinary Medicine and Bio-Safety Research Institute, Chonbuk National University, Jeonju, Republic of Korea. FAU - Kim, Seong Bum AU - Kim SB FAU - Rahman, Masudur AU - Rahman M FAU - Uyangaa, Erdenebileg AU - Uyangaa E FAU - Lee, Byung Min AU - Lee BM FAU - Kim, Jin Hyoung AU - Kim JH FAU - Park, Ki In AU - Park KI FAU - Hong, Jin Tae AU - Hong JT FAU - Han, Sang-Bae AU - Han SB FAU - Eo, Seong Kug AU - Eo SK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110502 PL - England TA - Comp Immunol Microbiol Infect Dis JT - Comparative immunology, microbiology and infectious diseases JID - 7808924 RN - 0 (Antigens, Bacterial) RN - 0 (Antigens, Viral) RN - 0 (Immunoglobulin A) RN - 0 (Immunoglobulin G) RN - 0 (Vaccines, Attenuated) SB - IM MH - Administration, Oral MH - Animals MH - Antigens, Bacterial MH - Antigens, Viral/immunology MH - Base Sequence MH - Cells, Cultured MH - Female MH - *Immunity, Mucosal MH - Immunoglobulin A/analysis/biosynthesis MH - Immunoglobulin G/analysis/biosynthesis MH - Lymph Nodes/cytology/*immunology/microbiology MH - Lymphocyte Activation MH - Lymphocytes/*immunology/microbiology MH - Mice MH - Mice, Inbred BALB C MH - Molecular Sequence Data MH - Open Reading Frames/genetics/immunology MH - Peyer's Patches/cytology/*immunology/microbiology MH - Porcine respiratory and reproductive syndrome virus/chemistry/*genetics/immunology MH - Salmonella Infections, Animal/immunology/metabolism/*prevention & control MH - Salmonella typhimurium/growth & development/immunology MH - Spleen/cytology/*immunology/microbiology MH - Swine MH - Th1-Th2 Balance MH - *Vaccination MH - Vaccines, Attenuated/*administration & dosage EDAT- 2011/05/06 06:00 MHDA- 2011/12/15 06:00 CRDT- 2011/05/06 06:00 PHST- 2010/12/12 00:00 [received] PHST- 2011/03/22 00:00 [revised] PHST- 2011/04/04 00:00 [accepted] PHST- 2011/05/06 06:00 [entrez] PHST- 2011/05/06 06:00 [pubmed] PHST- 2011/12/15 06:00 [medline] AID - S0147-9571(11)00027-0 [pii] AID - 10.1016/j.cimid.2011.04.001 [doi] PST - ppublish SO - Comp Immunol Microbiol Infect Dis. 2011 Jul;34(4):335-45. doi: 10.1016/j.cimid.2011.04.001. Epub 2011 May 2.