The SAG1 Toxoplasma gondii surface protein is not required for acute ocular toxoplasmosis in mice
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Updated: Jul 17, 2026

Forward Genetics Screens Using Macrophages to Identify Toxoplasma gondii Genes Important for Resistance to IFN-γ-Dependent Cell Autonomous Immunity
Published on: March 12, 2015
Elizabeth Charles1, Michelle C Callegan, Ira J Blader
1Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., BMSB 1034, Oklahoma City, OK 73034, USA.
Abstract:
The SAG1 Toxoplasma gondii surface protein stimulates acute ileitis. To determine whether SAG1 is also important in the eye, wild-type or SAG1 knockout parasites were injected intravitreally into mice. No differences in retinal damage or parasite growth were observed, indicating that unlike the case for the intestine, factors besides SAG1 are important for retinal damage.

