Koichi Imaoka

A nontoxic mutant of cholera toxin elicits Th2-type responses for enhanced mucosal immunity

Yamamoto, Shingo, Kiyono, Hiroshi, Yamamoto, Masafumi, Imaoka, Koichi, Yamamoto, Miho, Fujihashi, Kohtaro, ...

We have characterized a nontoxic mutant of cholera toxin (CT) as a mucosal adjuvant in mice. The mutant CT was made by substitution of serine with phenylalanine at position 61 of the A subunit...

A nontoxic mutant of cholera toxin elicits Th2-type responses for enhanced mucosal immunity

Yamamoto, Shingo, Kiyono, Hiroshi, Yamamoto, Masafumi, Imaoka, Koichi, Yamamoto, Miho, Fujihashi, Kohtaro, ...

We have characterized a nontoxic mutant of cholera toxin (CT) as a mucosal adjuvant in mice. The mutant CT was made by substitution of serine with phenylalanine at position 61 of the A subunit...

Mutants in the ADP-ribosyltransferase Cleft of Cholera Toxin Lack Diarrheagenicity but Retain Adjuvanticity

Yamamoto, Shingo, Takeda, Yoshifumi, Yamamoto, Masafumi, Kurazono, Hisao, Imaoka, Koichi, Yamamoto, Miho, ...

Cholera toxin (CT), the most commonly used mucosal adjuvant in experimental animals, is unsuitable for humans because of potent diarrhea-inducing properties. We have constructed two CT-A subunit...