Journal
EXPERT REVIEW OF VACCINES
Volume 20, Issue 10, Pages 1273-1290Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14760584.2021.1984890
Keywords
Nanoparticle; nanovaccine; adjuvant; infection; cancer; COVID-19
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Funding
- Council of Scientific and Industrial Research (CSIR) grant [BSC0114]
- UK Research and Innovation [MR/P027989/1]
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Nanovaccines, as efficient vaccine delivery systems, show great potential in improving tissue targeting, antigen presentation, and targeted delivery, providing promising strategies to combat infectious diseases and cancer.
Introduction Vaccination is so far the most effective way of eradicating infections. Rapidly emerging drug resistance against infectious diseases and chemotherapy-related toxicities in cancer warrant immediate vaccine development to save mankind. Subunit vaccines alone, however, fail to elicit sufficiently strong and long-lasting protective immunity against deadly pathogens. Nanoparticle (NP)-based delivery vehicles like microemulsions, liposomes, virosomes, nanogels, micelles and dendrimers offer promising strategies to overcome limitations of traditional vaccine adjuvants. Nanovaccines can improve targeted delivery, antigen presentation, stimulation of body's innate immunity, strong T cell response combined with safety to combat infectious diseases and cancers. Further, nanovaccines can be highly beneficial to generate effective immutherapeutic formulations against cancer. Areas covered This review summarizes the emerging nanoparticle strategies highlighting their success and challenges in preclinical and clinical trials in infectious diseases and cancer. It provides a concise overview of current nanoparticle-based vaccines, their adjuvant potential and their cellular delivery mechanisms. Expert opinion The nanovaccines (50-250 nm in size) are most efficient in terms of tissue targeting, prolonged circulation and preferential uptake by the professional APCs chiefly due to their small size. More rational designing, improved antigen loading, extensive functionalization and targeted delivery are some of the future goals of ideal nanovaccines.
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