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Manufacturing Processes of a Purified Microbiome Therapeutic Reduce Risk of Transmission of Potential Bacterial Pathogens in Donor Stool.


ABSTRACT:

Background

Although fecal microbiota transplant has been used to prevent recurrent Clostridioides difficile infection (rCDI), documented pathogen transmissions highlight inherent safety risks of minimally processed stool. We describe manufacturing processes for fecal microbiota spores, live (VOWST; VOS, formerly SER-109), a microbiota-based oral therapeutic of Firmicutes spores.

Methods

Bacterial inactivation kill curves were obtained after ethanol exposure for 4 model organisms spiked into process intermediates.

Results

Bacterial log reduction factors ranged from 6.5 log10 to 7.4 log10 and lysis of spiked organisms occurred rapidly within 30 seconds.

Conclusions

These experiments demonstrate substantial and rapid inactivation of representative organisms, supporting the potential benefit of VOS manufacturing processes to mitigate risk.

SUBMITTER: McChalicher CWJ 

PROVIDER: S-EPMC10640771 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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Manufacturing Processes of a Purified Microbiome Therapeutic Reduce Risk of Transmission of Potential Bacterial Pathogens in Donor Stool.

McChalicher Christopher W J CWJ   Lombardo Mary-Jane MJ   Khanna Sahil S   McKenzie Gregory J GJ   Halvorsen Elizabeth M EM   Almomani Sanabel S   Schuster Brian B   Hasson Brooke R BR   McGovern Barbara H BH   Ege David S DS   Auniņš John G JG  

The Journal of infectious diseases 20231101 10


<h4>Background</h4>Although fecal microbiota transplant has been used to prevent recurrent Clostridioides difficile infection (rCDI), documented pathogen transmissions highlight inherent safety risks of minimally processed stool. We describe manufacturing processes for fecal microbiota spores, live (VOWST; VOS, formerly SER-109), a microbiota-based oral therapeutic of Firmicutes spores.<h4>Methods</h4>Bacterial inactivation kill curves were obtained after ethanol exposure for 4 model organisms s  ...[more]

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