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Li HS, Shin MK, Singh B, Maharjan S, Park TE, Kang SK, Yoo HS, Hong ZS, Cho CS, Choi YJ. Nasal immunization with mannan-decorated mucoadhesive HPMCP microspheres containing ApxIIA toxin induces protective immunity against challenge infection with Actinobacillus pleuropneumoiae in mice. J Control Release 2016; 233:114-25. [PMID: 27189136 DOI: 10.1016/j.jconrel.2016.05.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 02/08/2016] [Accepted: 05/13/2016] [Indexed: 12/22/2022]
Abstract
The development of subunit mucosal vaccines requires an appropriate delivery system or an immune modulator such as an adjuvant to improve antigen immunogenicity. The nasal route for vaccine delivery by microparticles has attracted considerable interest, although challenges such as the rapid mucociliary clearance in the respiratory mucosa and the low immunogenicity of subunit vaccine still remain. Here, we aimed to develop mannan-decorated mucoadhesive thiolated hydroxypropylmethyl cellulose phthalate (HPMCP) microspheres (Man-THM) that contain ApxIIA subunit vaccine - an exotoxin fragment as a candidate for a subunit nasal vaccine against Actinobacillus pleuropneumoniae. For adjuvant activity, mucoadhesive thiolated HPMCP microspheres decorated with mannan could be targeted to the PRRs (pathogen recognition receptors) and mannose receptors (MR) of antigen presenting cells (APCs) in the respiratory immune system. The potential adjuvant ability of Man-THM for intranasal immunization was confirmed by in vitro and in vivo experiments. In a mechanistic study using APCs in vitro, it was found that Man-THM enhanced receptor-mediated endocytosis by stimulating the MR of APCs. In vivo, the nasal vaccination of ApxIIA-loaded Man-THM in mice resulted in higher levels of mucosal sIgA and serum IgG than mice in the ApxIIA and ApxIIA-loaded THM groups due to the specific recognition of the mannan in the Man-THM by the MRs of the APCs. Moreover, ApxIIA-containing Man-THM protected immunized mice when challenged with strains of A. pleuropneumoniae serotype 5. These results suggest that mucoadhesive Man-THM may be a promising candidate for a nasal vaccine delivery system to elicit systemic and mucosal immunity that can protect from pathogenic bacteria infection.
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Affiliation(s)
- Hui-Shan Li
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Min-Kyoung Shin
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul 151-921, South Korea
| | - Bijay Singh
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Sushila Maharjan
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Tae-Eun Park
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Sang-Kee Kang
- Institute of Green-Bio Science & Technology, Seoul National University, Pyeongchang-gun, 232-916, South Korea
| | - Han-Sang Yoo
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul 151-921, South Korea
| | - Zhong-Shan Hong
- Department of Animal Science, Tianjin Agricultural University, Tianjin 300-384, China
| | - Chong-Su Cho
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea.
| | - Yun-Jaie Choi
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea; Department of Animal Science, Tianjin Agricultural University, Tianjin 300-384, China.
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Li HS, Singh B, Park TE, Hong ZS, Kang SK, Cho CS, Choi YJ. Mannan-decorated thiolated Eudragit microspheres for targeting antigen presenting cells via nasal vaccination. Eur J Pharm Sci 2015; 80:16-25. [PMID: 26415829 DOI: 10.1016/j.ejps.2015.09.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/22/2015] [Accepted: 09/23/2015] [Indexed: 01/03/2023]
Abstract
Mucosal vaccination of protein as an antigen requires appropriate delivery or adjuvant systems to deliver antigen to mucosal immune cells efficiently and generate valid immune responses. For successful nasal immunization, the obstacles imposed by the normal process of mucociliary clearance which limits residence time of applied antigens and low antigen delivery to antigen presenting cells (APCs) in nasal associated lymphoid tissue (NALT) need to be overcome for the efficient vaccination. Here, we prepared mucoadhesive and mannan-decorated thiolated Eudragit microspheres (Man-TEM) as a nasal vaccine carrier to overcome the limitations. Mucoadhesive thiolated Eudragit (TE) were decorated with mannan for targeting mannose receptors (MR) in antigen presenting cells (APCs) to obtain efficient immune responses. The potential adjuvant ability of Man-TEM for intranasal immunization was confirmed by in vitro and in vivo experiments. In mechanistic study using APCs in vitro, we obtained that Man-TEM enhanced the receptor-mediated endocytosis by stimulating the MR receptors of APCs. The nasal vaccination of OVA-loaded Man-TEM in mice showed higher levels of serum IgG and mucosal sIgA than the soluble OVA group due to the specific recognition of MR of APCs by the mannan in the Man-TEM. These results suggest that mucoadhesive and Man-TEM may be a promising candidate for nasal vaccine delivery system to elicit systemic and mucosal immunity.
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Affiliation(s)
- Hui-Shan Li
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Bijay Singh
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Tae-Eun Park
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea
| | - Zhong-Shan Hong
- Department of Animal Science, Tianjin Agricultural University, Tianjin 300-384, China
| | - Sang-Kee Kang
- Institute of Green-Bio Science & Technology, Seoul National University, Pyeongchang-gun 232-916, South Korea
| | - Chong-Su Cho
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea.
| | - Yun-Jaie Choi
- Department of Agricultural Biotechnology & Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, South Korea; Department of Animal Science, Tianjin Agricultural University, Tianjin 300-384, China.
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Silva JM, Zupancic E, Vandermeulen G, Oliveira VG, Salgado A, Videira M, Gaspar M, Graca L, Préat V, Florindo HF. In vivo delivery of peptides and Toll-like receptor ligands by mannose-functionalized polymeric nanoparticles induces prophylactic and therapeutic anti-tumor immune responses in a melanoma model. J Control Release 2014; 198:91-103. [PMID: 25483429 DOI: 10.1016/j.jconrel.2014.11.033] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 11/24/2014] [Accepted: 11/26/2014] [Indexed: 10/24/2022]
Abstract
We hypothesized that the co-entrapment of melanoma-associated antigens and the Toll-like receptor (TLR) ligands Poly(I:C) and CpG, known to be Th1-immunopotentiators, in mannose-functionalized aliphatic polyester-based nanoparticles (NPs) could be targeted to mannose receptors on antigen-presenting cells and induce anti-tumor immune responses. High entrapment efficiencies of antigens and immunopotentiators in 150nm NPs were obtained. The co-entrapment of the model antigen ovalbumin and the TLR ligands was crucial to induce high IgG2c/IgG1 ratios and high levels of IFN-γ and IL-2. Mannose-functionalization of NPs potentiated the Th1 immune response. The nanoparticulate vaccines decreased the growth rate of murine B16F10 melanoma tumors in therapeutic and prophylatic settings. The combination of mannose-functionalized NPs containing MHC class I- or class II-restricted melanoma antigens and the TLR ligands induced the highest tumor growth delay. Overall, we demonstrate that the multifunctional properties of NPs in terms of targeting and antigen/adjuvant delivery have high cancer immunotherapeutic potential.
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Affiliation(s)
- Joana M Silva
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisbon, Portugal; Louvain Drug Research Institute, Advanced Drug Delivery & Biomaterials, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Eva Zupancic
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Gaëlle Vandermeulen
- Louvain Drug Research Institute, Advanced Drug Delivery & Biomaterials, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Vanessa G Oliveira
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, 1649-025 Lisbon, Portugal
| | - Ana Salgado
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Mafalda Videira
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Manuela Gaspar
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Luis Graca
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, 1649-025 Lisbon, Portugal
| | - Véronique Préat
- Louvain Drug Research Institute, Advanced Drug Delivery & Biomaterials, Université Catholique de Louvain, 1200 Brussels, Belgium.
| | - Helena F Florindo
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisbon, Portugal.
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