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Genomic and virulence analysis of in vitro cultured Cryptosporidium parvum.


ABSTRACT: Recent advances in the in vitro cultivation of Cryptosporidium parvum using hollow fiber bioreactor technology (HFB) have permitted continuous growth of parasites that complete all life cycle stages. The method provides access to all stages of the parasite and provides a method for non-animal production of oocysts for use in clinical trials. Here we examined the effect of long-term (>20 months) in vitro culture on virulence-factors, genome conservation, and in vivo pathogenicity of the host by in vitro cultured parasites. We find low-level sequence variation that is consistent with that observed in calf-passaged parasites. Further using a calf model infection, oocysts obtained from the HFB caused diarrhea of the same volume, duration and oocyst shedding intensity as in vivo passaged parasites.

SUBMITTER: Yarlett N 

PROVIDER: S-EPMC10927135 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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Genomic and virulence analysis of in vitro cultured Cryptosporidium parvum.

Yarlett Nigel N   Morada Mary M   Schaefer Deborah A DA   Ackman Kevin K   Carranza Elizabeth E   Baptista Rodrigo de Paula RP   Riggs Michael W MW   Kissinger Jessica C JC  

PLoS pathogens 20240228 2


Recent advances in the in vitro cultivation of Cryptosporidium parvum using hollow fiber bioreactor technology (HFB) have permitted continuous growth of parasites that complete all life cycle stages. The method provides access to all stages of the parasite and provides a method for non-animal production of oocysts for use in clinical trials. Here we examined the effect of long-term (>20 months) in vitro culture on virulence-factors, genome conservation, and in vivo pathogenicity of the host by i  ...[more]

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