CCR5 is Essential for NK Cell Trafficking and Host Survival following Toxoplasma gondii Infection
Author Information
Author(s): Khan Imtiaz A, Thomas Seddon Y, Moretto Magali M, Lee Frederick S, Islam Sabina A, Schwartzman Joseph D, Luster Andrew D
Primary Institution: Louisiana State University Medical Center
Hypothesis
CCR5 is required for the recruitment of natural killer (NK) cells into infected tissues during Toxoplasma gondii infection.
Conclusion
CCR5 is critical for NK cell trafficking, and its absence leads to increased susceptibility to Toxoplasma gondii infection due to impaired immune response.
Supporting Evidence
- CCR5-deficient mice had a 5-fold higher cyst number compared to wild-type mice.
- Adoptive transfer of normal NK cells restored survival in CCR5-deficient mice.
- CCR5−/− mice showed a diminished inflammatory response and higher parasite burden.
Takeaway
CCR5 helps immune cells called NK cells get to where they are needed to fight off a parasite called Toxoplasma gondii. Without CCR5, the body struggles to fight the infection.
Methodology
Mice deficient in CCR5 were infected with Toxoplasma gondii, and their immune responses were analyzed through survival rates, histopathology, and cytokine production.
Potential Biases
Potential bias in interpreting results based on genetic backgrounds of the mouse models used.
Limitations
The study primarily focused on specific mouse strains, which may not fully represent human responses.
Participant Demographics
Mice used were of the C57BL/6 and C57BL/6x129 genetic backgrounds.
Statistical Information
P-Value
0.002
Statistical Significance
p = 0.002
Digital Object Identifier (DOI)
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