Nasal immunization of mice with virus-like particles protects offspring against rotavirus diarrhea.

Abstract:

:Rotavirus is the major cause of diarrhea among young infants in both humans and animals. Immune protection of newborns by vaccination is difficult to achieve since there is not enough time to mount an immune response before exposure to the virus. We have designed a vaccination strategy mediating transfer of neutralizing antibodies from the mother to the offspring during pregnancy and/or lactation. Adult female mice were nasally immunized with virus-like particles (VLPs) made of viral proteins VP2 and 6 (VLP2/6) or VP 2, 6, and 7 (VLP2/6/7) derived from the RF rotavirus strain in the presence or absence of cholera toxin. Both vaccines elicited serum and milk antibodies against the respective VPs. Four days after parturition, suckling pups were challenged orally with RF rotavirus. Pups from mothers immunized with VLP2/6/7 but not VLP2/6 were protected against rotavirus diarrhea, indicating that VP7 plays a key role in protection. Protection was mediated by milk rather than serum antibodies, and mucosal adjuvants were not required. In conclusion, VLPs containing VP7 administered nasally to mothers represent a promising vaccine candidate for the protection of suckling newborns against rotavirus-induced diarrhea, even in the absence of a mucosal adjuvant.

journal_name

J Virol

journal_title

Journal of virology

authors

Coste A,Sirard JC,Johansen K,Cohen J,Kraehenbuhl JP

doi

10.1128/jvi.74.19.8966-8971.2000

subject

Has Abstract

pub_date

2000-10-01 00:00:00

pages

8966-71

issue

19

eissn

0022-538X

issn

1098-5514

journal_volume

74

pub_type

杂志文章