DNA vaccine pCD-Sj32 and its efficacy of protective immunity against infection of Schistosoma japonicum.

Abstract:

OBJECTIVE:To study protective immunity afforded by murine immunization with DNA vaccine of Schistosoma japonicum (S. japonicum) as measured by reduction in worm burden and host antibody, cytokines. METHODS:DNA vaccine pCD-Sj32 was constructed, identified and expressed. pCD-Sj32 could induce substantial protective immunity against infection of S. japonicum in BALB/c mice. The best efficacy can be produced with one injection of 100 micrograms DNA into the quadriceps muscle, combined with challenge for 8 weeks after immunization. T lymphocyte subsets of CD8+, IL-2. TNF and IFN-gamma of experimental animal could play important roles in regulating immune functions of schistosomiasis. RESULTS:High titre of specific antibody IgG could be induced by vaccinated with pCD-Sj32, and antibody can mediate macrophage to produce ADCC effects in vitro. CONCLUSION:pCD-Sj32 may represent a new approach to developing subunit vaccine.

journal_name

Chin Med J (Engl)

journal_title

Chinese medical journal

authors

Shi Y,Xie L,Li C,Han J

keywords:

subject

Has Abstract

pub_date

1999-08-01 00:00:00

pages

677-80

issue

8

eissn

0366-6999

issn

2542-5641

journal_volume

112

pub_type

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