Recombinant L7/L12 protein entrapping PLGA (poly lactide-co-glycolide) micro particles protect BALB/c mice against the virulent B. abortus 544 infection.
Vaccine
; 33(24): 2786-92, 2015 Jun 04.
Article
em En
| MEDLINE
| ID: mdl-25930114
ABSTRACT
Brucella abortus is the etiologic agent of Brucellosis, a zoonotic infection affecting a wide range of animals. It is a highly infectious disease of pandemic potential reporting over 500,000 new human cases annually. Till date, there is no reported vaccine for humans and the available animal vaccines are unsafe, therefore a safe and effective subunit vaccine is highly sought for. In this study, we have evaluated rL7/L12 protein encapsulated in microparticles of PLGA (8515), a biocompatible and biodegradable polymer approved by FDA for human use. In this work, BALB/c mice have been immunized with rL7/L12 entrapped in microparticles in a prime-boost regimen. Further, evaluation of the immunogenicity of the formulation showed that the IgG antibody titre reached a maxima of 2.2×10(5) (p value 0.0001 v/s control) after the injection of the booster dose. A mixed IgG isotype profile (IgG1/IgG2a) indicated the stimulation of both the cellular as well as humoral immunity which has increased parallely and gradually since the first immunization. High levels of IFN-γ, 815±55pg/ml were recorded depicting an optimal elicitation of the cellular wing of immunity leading to clearance of splenic bacteria upto 1.69 log units.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ácido Poliglicólico
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Proteínas Ribossômicas
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Brucella abortus
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Brucelose
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Vacina contra Brucelose
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Ácido Láctico
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Microesferas
Limite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Vaccine
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Índia