PMID- 26076321 OWN - NLM STAT- MEDLINE DCOM- 20160419 LR - 20181113 IS - 2164-554X (Electronic) IS - 2164-5515 (Print) IS - 2164-5515 (Linking) VI - 11 IP - 7 DP - 2015 TI - Effects of the fusion design and immunization route on the immunogenicity of Ag85A-Mtb32 in adenoviral vectored tuberculosis vaccine. PG - 1803-13 LID - 10.1080/21645515.2015.1042193 [doi] AB - Vaccines containing multiple antigens may induce broader immune responses and provide better protection against Mycobacterium tuberculosis (Mtb) infection as compared to a single antigen. However, strategies for incorporating multiple antigens into a single vector and the immunization routes may affect their immunogenicity. In this study, we utilized recombinant adenovirus type 5 (rAd5) as a model vaccine vector, and Ag85A (Rv3804c) and Mtb32 (Rv0125) as model antigens, to comparatively evaluate the influence of codon usage optimization, signal sequence, fusion linkers, and immunization routes on the immunogenicity of tuberculosis (TB) vaccine containing multiple antigens in C57BL/6 mice. We showed that codon-optimized Ag85A and Mtb32 fused with a GSG linker induced the strongest systemic and pulmonary cell-mediated immune (CMI) responses. Strong CMI responses were characterized by the generation of a robust IFN-gamma ELISPOT response as well as antigen-specific CD4(+) T and CD8(+) T cells, which secreted mono-, dual-, or multiple cytokines. We also found that subcutaneous (SC) and intranasal (IN)/oral immunization with this candidate vaccine exhibited the strongest boosting effects for Mycobacterium bovis bacille Calmette-Guerin (BCG)-primed systemic and pulmonary CMI responses, respectively. Our results supported that codon optimized Ag85A and Mtb32 fused with a proper linker and immunized through SC and IN/oral routes can generate the strongest systemic and pulmonary CMI responses in BCG-primed mice, which may be particularly important for the design of TB vaccines containing multiple antigens. FAU - Zhang, Yiling AU - Zhang Y AD - a State Key Laboratory of Respiratory Diseases; The First Affiliated Hospital of Guangzhou Medical University ; Guangzhou , China. FAU - Feng, Liqiang AU - Feng L FAU - Li, Liang AU - Li L FAU - Wang, Dimin AU - Wang D FAU - Li, Chufang AU - Li C FAU - Sun, Caijun AU - Sun C FAU - Li, Pingchao AU - Li P FAU - Zheng, Xuehua AU - Zheng X FAU - Liu, Yichu AU - Liu Y FAU - Yang, Wei AU - Yang W FAU - Niu, Xuefeng AU - Niu X FAU - Zhong, Nanshan AU - Zhong N FAU - Chen, Ling AU - Chen L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hum Vaccin Immunother JT - Human vaccines & immunotherapeutics JID - 101572652 RN - 0 (BCG Vaccine) RN - 0 (Cytokines) RN - 0 (Tuberculosis Vaccines) RN - 0 (Vaccines, Synthetic) SB - IM MH - Adenoviridae/*genetics MH - Administration, Oral MH - Animals MH - BCG Vaccine/immunology MH - CD4-Positive T-Lymphocytes/immunology MH - CD8-Positive T-Lymphocytes/immunology MH - Cytokines/metabolism MH - Female MH - Genetic Vectors MH - Immunity, Cellular MH - Lung/immunology MH - Mice MH - Mice, Inbred C57BL MH - Spleen/immunology MH - Tuberculosis Vaccines/administration & dosage/*genetics/*immunology MH - Vaccines, Synthetic/administration & dosage/*genetics/*immunology PMC - PMC4514253 OTO - NOTNLM OT - APC, Allophycocyanin OT - BCG, Mycobacterium bovis bacille Calmette-Guerin OT - BSA, bovine serum album OT - CMI, cell-mediated immune responses OT - DAPI, 4',6-diamidino-2-phenylindole OT - DMSO, Dimethyl sulfoxide OT - ELISPOT, Enzyme-linked immune-sorbent spot OT - FACS, Fluorescence Activated Cell Sorter OT - FBS, fetal bovine serum OT - FITC, fluorescein isothiocyanate OT - HA tag, hemagglutinin tag OT - HEK, human embryo kidney OT - ICS, Intracellular cytokine staining OT - IFN-gamma, interferon gamma OT - IL-2, Interleukin 2 OT - IM, intramuscular OT - IN, intranasal OT - Mtb, Mycobacterium tuberculosis OT - NBT/BCIP, Nitro blue tetrazolium/ 5-Bromo-4-chloro-3-indolyl phosphate OT - PBS, Phosphate Buffered Saline OT - PCR, polymerase chain reaction OT - PE, Phycoerythrin OT - PerCP, Peridinin-ChlorophylL-Protein Complex OT - RPMI, Roswell Park Memorial Institute OT - SC, subcutaneous OT - SDS-PAGE, sodium dodecyl sulfate polyacrylamide gel electrophoresis OT - SFC, spot-forming cells OT - TB, tuberculosis OT - TNF-alpha, tumor necrosis factor alpha OT - fusion strategies OT - immunization routes OT - immunogenicity OT - multiple antigens OT - mycobacterium tuberculosis OT - rAd5, recombinant adenovirus type 5 OT - tPA, tissue plasminogen activator OT - vp, viral particles EDAT- 2015/06/16 06:00 MHDA- 2016/04/20 06:00 PMCR- 2016/06/15 CRDT- 2015/06/16 06:00 PHST- 2015/06/16 06:00 [entrez] PHST- 2015/06/16 06:00 [pubmed] PHST- 2016/04/20 06:00 [medline] PHST- 2016/06/15 00:00 [pmc-release] AID - 1042193 [pii] AID - 10.1080/21645515.2015.1042193 [doi] PST - ppublish SO - Hum Vaccin Immunother. 2015;11(7):1803-13. doi: 10.1080/21645515.2015.1042193.