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Genetic Manipulation in Δku80 Strains for Functional Genomic Analysis of Toxoplasma gondii
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Genetic Manipulation of Cryptosporidium parvum

Sebastian Shaw1, Adam Sateriale2, Mattie C Pawlowic3

  • 1Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|October 27, 2025
PubMed

Insights

Genetic manipulation of Cryptosporidium parvum is now reliable using CRISPR/Cas9 and mouse models. This guide details key procedures for creating and purifying transgenic parasites for research advancements.

Area of Science:

  • Parasitology
  • Molecular Biology
  • Genetics

Background:

  • Cryptosporidium parvum is an important enteric pathogen.
  • Genetic manipulation of Cryptosporidium has historically been challenging.
  • Recent advances have significantly improved genetic tools for this parasite.

Purpose of the Study:

  • To provide a foundational guide for genetically manipulating Cryptosporidium parvum.
  • To detail essential procedures for creating and purifying transgenic parasites.
  • To highlight recent advancements in genetic tools for Cryptosporidium research.

Main Methods:

  • CRISPR/Cas9 driven homologous repair for genetic modification.
  • In vivo propagation of parasites in immunodeficient mice.
  • Detailed protocols for excystation, transfection, infection, collection, and purification.

Main Results:

  • Reliable genetic manipulation of Cryptosporidium parvum is achievable.
  • Established protocols facilitate the generation of transgenic parasites.
  • Novel selection markers and conditional mutagenesis strategies are available.

Conclusions:

  • The genetic manipulation of Cryptosporidium parvum is now a robust and accessible technique.
  • These advancements significantly expand the toolkit for Cryptosporidium research.
  • Further research can leverage these methods to study parasite biology and develop interventions.
Keywords:
CRISPRCas9GeneticsTransfectionTransgenesis

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