A Comparison of Intramuscular and Subcutaneous Administration of LigA Subunit Vaccine Adjuvanted with Neutral Liposomal Formulation Containing Monophosphoryl Lipid A and QS21.

Details

Serval ID
serval:BIB_3F117F9152A3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
A Comparison of Intramuscular and Subcutaneous Administration of LigA Subunit Vaccine Adjuvanted with Neutral Liposomal Formulation Containing Monophosphoryl Lipid A and QS21.
Journal
Vaccines
Author(s)
Techawiwattanaboon T., Barnier-Quer C., Palaga T., Jacquet A., Collin N., Sangjun N., Komanee P., Patarakul K.
ISSN
2076-393X (Print)
ISSN-L
2076-393X
Publication state
Published
Issued date
01/09/2020
Peer-reviewed
Oui
Volume
8
Number
3
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
Leptospirosis vaccines with higher potency and reduced adverse effects are needed for human use. The carboxyl terminal domain of leptospiral immunoglobulin like protein A (LigAc) is currently the most promising candidate antigen for leptospirosis subunit vaccine. However, LigAc-based vaccines were unable to confer sterilizing immunity against Leptospira infection in animal models. Several factors including antigen properties, adjuvant, delivery system, and administration route need optimization to maximize vaccine efficacy. Our previous report demonstrated protective effects of the recombinant LigAc (rLigAc) formulated with liposome-based adjuvant, called LMQ (neutral liposome combined with monophosphoryl lipid A and Quillaja saponaria fraction 21) in hamsters. This study aimed to evaluate the impact of two commonly used administration routes, intramuscular (IM) and subcutaneous (SC), on immunogenicity and protective efficacy of rLigAc-LMQ administrated three times at 2-week interval. Two IM vaccinations triggered significantly higher levels of total anti-rLigAc IgG than two SC injections. However, comparable IgG titers and IgG2/IgG1 ratio was observed for both routes after the third immunization. The route of vaccine administration did not influence the survival rate (60%) and renal colonization against lethal Leptospira challenge. Importantly, the kidneys of IM group showed no pathological lesions while the SC group showed mild damage. In conclusion, IM vaccination with rLigAc-LMQ not only elicited faster antibody production but also protected from kidney damage following leptospiral infection better than SC immunization. However, both tested routes did not influence protective efficacy in terms of survival rate and the level of renal colonization.
Keywords
LMQ adjuvant, Leptospira, LigA subunit vaccine, intramuscular, leptospirosis, subcutaneous, vaccination route
Pubmed
Web of science
Open Access
Yes
Create date
15/10/2020 12:27
Last modification date
09/04/2024 7:14
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