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Zhang J, Cui L, Zhang Y, Pan H, Yuan H, Zhou S, Chen H, Song Y. Oral administration of PEDV-dissolved Alg-CS gel induces high and sustained mucosal immunity in mice. J Gen Virol 2024; 105. [PMID: 38656455 DOI: 10.1099/jgv.0.001979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024] Open
Abstract
Porcine epidemic diarrhea (PED) is a serious disease in piglets that leads to high mortality. An effective measure that provides higher IgA levels in the intestine and milk is required to decrease losses. Porcine epidemic diarrhea virus (PEDV) was dissolved in calcium alginate (Alg) and combined with chitosan (CS) via electrostatic interactions between cationic chitosan and anionic alginate to create a porous gel (Alg-CS+PEDV). The gel was used to immunize mice orally or in combination with subcutaneous injections of inactivated PEDV vaccine. At 12 and 24 days after immunization, levels of IgA and IgG in Alg-CS+PEDV were higher than with normal PEDV oral administration. At 24 days after immunization, the concentration of IFN-γ in Alg-CS+PEDV was higher than with normal PEDV oral administration. Furthermore, oral administration combining subcutaneous immunization induced higher levels of IgG and IgA than oral administration alone. Our study provides a new method for the preparation and administration of oral vaccines to achieve enhanced mucosal immunity against PEDV.
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Affiliation(s)
- Jinhua Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Lei Cui
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Yongliang Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Hong Pan
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Honggen Yuan
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - SaiSai Zhou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Huanchun Chen
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Yunfeng Song
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, PR China
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Chen L, Jiang F, Xu H, Fan Y, Du C. Improved membrane stability of alginate-chitosan microcapsules by crosslinking with tannic acid. Biotechnol Lett 2023:10.1007/s10529-023-03399-3. [PMID: 37266880 DOI: 10.1007/s10529-023-03399-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/01/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
OBJECTIVE The insufficient stability of alginate-chitosan (ALG-CS) microcapsules in biorelevant media limits their applications in the biomedical field. Attempts were made to improve the membrane stability of ALG-CS microcapsules by noncovalent crosslinking with tannic acid. RESULTS The membrane stability of ALG-CS microcapsules in culture medium and serum was significantly improved by crosslinking with tannic acid. Moreover, the reason for the significant improvement in membrane stability had been demonstrated to be that the stability of chitosan-tannic acid (CS-TA) polyelectrolyte complexes was less affected by the competitive binding of those weak acid ions such as HCO3-. In addition, the optimal conditions for preparing alginate-chitosan-tannic acid (ALG-CS-TA) microcapsules were tannic acid concentration of 0.5% (w/v) and pH = 7. CONCLUSION The study provides a novel approach for improving the stability of the ALG-CS microcapsules in biorelevant media to expand their scope of application in the biological field.
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Affiliation(s)
- Li Chen
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, 310058, Zhejiang, People's Republic of China.
- School of Pharmaceutical and Chemical Engineering, Taizhou University, No. 1139, Shifu Avenue, Jiaojiang District, Taizhou, 318000, Zhejiang, People's Republic of China.
| | - Fang Jiang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, No. 1139, Shifu Avenue, Jiaojiang District, Taizhou, 318000, Zhejiang, People's Republic of China
| | - Haidan Xu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, No. 1139, Shifu Avenue, Jiaojiang District, Taizhou, 318000, Zhejiang, People's Republic of China
| | - Yaoyao Fan
- School of Pharmaceutical and Chemical Engineering, Taizhou University, No. 1139, Shifu Avenue, Jiaojiang District, Taizhou, 318000, Zhejiang, People's Republic of China
| | - Cunbin Du
- School of Pharmaceutical and Chemical Engineering, Taizhou University, No. 1139, Shifu Avenue, Jiaojiang District, Taizhou, 318000, Zhejiang, People's Republic of China
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Meng Q, Zhong S, Wang J, Gao Y, Cui X. Advances in chitosan-based microcapsules and their applications. Carbohydr Polym 2023; 300:120265. [DOI: 10.1016/j.carbpol.2022.120265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 11/11/2022]
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