IMAGE: Researchers at the University of Tokyo have announced the successful results of the Phase 1 clinical trial of a new type of vaccine to pro

Edible Cholera vaccine made of powdered rice proves safe in phase 1 human trials

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2021-06-27 15:30:05

IMAGE: Researchers at the University of Tokyo have announced the successful results of the Phase 1 clinical trial of a new type of vaccine to protect against cholera and travelers' diarrhea.... view more 

A new vaccine to protect against deadly cholera has been made by grinding up genetically modified grains of rice. The first human trial has shown no obvious side effects and a good immune response. Researchers based at the University of Tokyo and Chiba University have published the peer-reviewed results of the Phase 1 clinical trial of the vaccine, named MucoRice-CTB, in The Lancet Microbe.

Vaccine manufacturing has made enormous strides in 2020, spurred on by COVID-19. However, the complexity of mRNA-based SARS-CoV-2 vaccines has highlighted the value of inoculations that can be made, transported and stored cheaply and without refrigeration.

"I'm very optimistic for the future of our MucoRice-CTB vaccine, especially because of the dose escalation results. Participants responded to the vaccine at the low, medium and high doses, with the largest immune response at the highest dose," said Professor Hiroshi Kiyono, D.D.S., Ph.D., from the Institute of Medical Science at the University of Tokyo who leads the MucoRice project. Dr. Kiyono is also a faculty member at Chiba University in Japan and the University of California, San Diego, in the U.S.

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