Novel Concepts for HIV Vaccine Vector Design
Overview
Parasitology
Affiliations
The unprecedented challenges of developing effective vaccines against intracellular pathogens such as HIV, malaria, and tuberculosis have resulted in more rational approaches to vaccine development. Apart from the recent advances in the design and selection of improved epitopes and adjuvants, there are also ongoing efforts to optimize delivery platforms. Viral vectors are the best-characterized delivery tools because of their intrinsic adjuvant capability, unique cellular tropism, and ability to trigger robust adaptive immune responses. However, a known limitation of viral vectors is preexisting immunity, and ongoing efforts are aimed at developing novel vector platforms with lower seroprevalence. It is also becoming increasingly clear that different vectors, even those derived from phylogenetically similar viruses, can elicit substantially distinct immune responses, in terms of quantity, quality, and location, which can ultimately affect immune protection. This review provides a summary of the status of viral vector development for HIV vaccines, with a particular focus on novel viral vectors and the types of adaptive immune responses that they induce.
Fractionating a COVID-19 Ad5-vectored vaccine improves virus-specific immunity.
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PMID: 34648369 PMC: 9278052. DOI: 10.1126/sciimmunol.abi8635.
Limiting the priming dose of a SARS CoV-2 vaccine improves virus-specific immunity.
Sanchez S, Palacio N, Dangi T, Ciucci T, Penaloza-MacMaster P bioRxiv. 2021; .
PMID: 33821275 PMC: 8020975. DOI: 10.1101/2021.03.31.437931.
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PMID: 33789991 PMC: 8315921. DOI: 10.1128/JVI.00059-21.
RhCMV serostatus and vaccine adjuvant impact immunogenicity of RhCMV/SIV vaccines.
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PMID: 32820216 PMC: 7441386. DOI: 10.1038/s41598-020-71075-x.
Recombinant HIV-1 vaccine candidates based on replication-defective flavivirus vector.
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PMID: 31882800 PMC: 6934588. DOI: 10.1038/s41598-019-56550-4.