SIMULTANEOUS EXPRESSION OF CFA/I AND CS3 COLONIZATION FACTOR ANTIGENS OF ENTEROTOXIGENIC ESCHERICHIA-COLI BY DELTA-AROC, DELTA-AROD SALMONELLA-TYPHI VACCINE STRAIN CVD-908

被引:42
作者
GIRON, JA [1 ]
XU, JG [1 ]
GONZALEZ, CR [1 ]
HONE, D [1 ]
KAPER, JB [1 ]
LEVINE, MM [1 ]
机构
[1] UNIV MARYLAND, SCH MED, CTR VACCINE DEV, DIV GEOGR MED, BALTIMORE, MD 21201 USA
关键词
FIMBRIAE; PILI; DIARRHEA; ENTEROTOXIGENIC ESCHERICHIA-COLI; SALMONELLA TYPHI; COLONIZATION FACTORS; TYPHOID FEVER;
D O I
10.1016/0264-410X(95)00003-J
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Among the known colonization factors of enterotoxigenic Escherichia coli (ETEC), CFA/I and CS3 (the common antigen in the CFA/II family of fimbrial antigens) are two of the most prevalent fimbrial antigens found in clinical isolates but are never expressed by the same wild-type strain. We manipulated the genetic determinants encoding CS3 and CFA/I fimbriae so that these two important colonization factors are expressed simultaneously in attenuated Salmonella typhi live oral vaccine strain CVD 908, including after growth in liquid medium (CFA/I is poorly expressed by wild-type ETEC in broth culture), The recombinant fimbrial structures produced by CVD 908 ave morphologically indistinguishable from the CS3 fibrillae and CFA/I rod-like fimbriae produced by ETEC, and are recognized by monospecific CS3 and CFA/I antibodies, This prototype construct may prove useful in investigating the live vector approach to immunoprophylaxis of ETEC diarrheal disease.
引用
收藏
页码:939 / 946
页数:8
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