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Polymers 2018, 10(9), 948;

Oral Vaccine Delivery for Intestinal Immunity—Biological Basis, Barriers, Delivery System, and M Cell Targeting

Department of Medical Sciences, College of Medicine, Hallym University, Chuncheon 24252, Korea
Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University, Dongtan Sacred Heart Hospital, Hwaseong 18450, Korea
Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 27469, Korea
4D Biomaterials Center, Korea National University of Transportation, Jeungpyeong 27909, Korea
Authors to whom correspondence should be addressed.
Received: 30 July 2018 / Revised: 21 August 2018 / Accepted: 22 August 2018 / Published: 27 August 2018
(This article belongs to the Special Issue Polymeric Micro/Nanoparticles for Bio-Medical Applications)
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Most currently available commercial vaccines are delivered by systemic injection. However, needle-free oral vaccine delivery is currently of great interest for several reasons, including the ability to elicit mucosal immune responses, ease of administration, and the relatively improved safety. This review summarizes the biological basis, various physiological and immunological barriers, current delivery systems with delivery criteria, and suggestions for strategies to enhance the delivery of oral vaccines. In oral vaccine delivery, basic requirements are the protection of antigens from the GI environment, targeting of M cells and activation of the innate immune response. Approaches to address these requirements aim to provide new vaccines and delivery systems that mimic the pathogen’s properties, which are capable of eliciting a protective mucosal immune response and a systemic immune response and that make an impact on current oral vaccine development. View Full-Text
Keywords: oral vaccine delivery; M-cell targeting; intestinal immunity oral vaccine delivery; M-cell targeting; intestinal immunity

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kang, S.H.; Hong, S.J.; Lee, Y.-K.; Cho, S. Oral Vaccine Delivery for Intestinal Immunity—Biological Basis, Barriers, Delivery System, and M Cell Targeting. Polymers 2018, 10, 948.

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