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Characterization of Host Cell Mutants Significantly Resistant to Cryptosporidium parvum Infection

Xue Yu1, Haili Zhang1, Guan Zhu1

  • 1Department of Veterinary Pathobiology, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, 4467 TAMU, College Station, Texas, USA.

The Journal of Eukaryotic Microbiology
|April 23, 2017
PubMed

Insights

Researchers developed three HCT-8 cell mutants resistant to Cryptosporidium parvum infection. These mutants show reduced parasite attachment and intracellular development, aiding studies on host-parasite interactions and diarrheal disease mechanisms.

Area of Science:

  • Parasitology
  • Cell Biology
  • Infectious Diseases

Background:

  • Cryptosporidium parvum causes significant diarrheal illness in humans and animals.
  • Understanding host-parasite molecular interactions during invasion is crucial but limited.

Purpose of the Study:

  • To generate and characterize host cell mutants with reduced susceptibility to Cryptosporidium parvum infection.
  • To identify cellular mechanisms involved in parasite attachment and intracellular development.

Main Methods:

  • UV-induced mutagenesis of HCT-8 cells to create mutant cell lines.
  • Quantitative reverse transcription PCR (qRT-PCR) to assess parasite loads post-infection.
  • Analysis of parasite attachment and intracellular development stages.

Main Results:

  • Established 43 mutant cell lines, identifying three (A05, B08, B12) with significantly reduced cryptosporidial infection.
  • Mutant A05 showed ~45% reduced parasite load, primarily affecting parasite attachment (~30% reduction).
  • Mutants B08 and B12 exhibited ~35% and ~20% reduced parasite loads, respectively, impacting intracellular development.

Conclusions:

  • The characterized HCT-8 cell mutants provide valuable tools for dissecting Cryptosporidium parvum invasion pathways.
  • Identifying genes responsible for altered attachment and intracellular development in these mutants will advance understanding of host-pathogen interactions.
Keywords:
Cell mutagenesisHCT-8 cellsparasite attachmentparasite invasion

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