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- Title
The transcription factor AP2XI-2 is a key negative regulator of Toxoplasma gondii merogony.
- Authors
Wang, Jin-Lei; Li, Ting-Ting; Zhang, Nian-Zhang; Wang, Meng; Sun, Li-Xiu; Zhang, Zhi-Wei; Fu, Bao-Quan; Elsheikha, Hany M.; Zhu, Xing-Quan
- Abstract
Sexual development in Toxoplasma gondii is a multistep process that culminates in the production of oocysts, constituting approximately 50% of human infections. However, the molecular mechanisms governing sexual commitment in this parasite remain poorly understood. Here, we demonstrate that the transcription factors AP2XI-2 and AP2XII-1 act as negative regulators, suppressing merozoite-primed pre-sexual commitment during asexual development. Depletion of AP2XI-2 in type II Pru strain induces merogony and production of mature merozoites in an alkaline medium but not in a neutral medium. In contrast, AP2XII-1-depleted Pru strain undergoes several rounds of merogony and produces merozoites in a neutral medium, with more pronounced effects observed under alkaline conditions. Additionally, we identified two additional AP2XI-2-interacting proteins involved in repressing merozoite programming. These findings underscore the intricate regulation of pre-sexual commitment by a network of factors and suggest that AP2XI-2 or AP2XII-1-depleted Pru parasites can serve as a model for studying merogony in vitro. Wang et al. discovered that AP2XI-2 and AP2XII-1 negatively regulate merozoite-primed pre-sexual commitment in Toxoplasma gondii, and parasites depleted of either AP2XI-2 or AP2XII-1 can serve as a valuable in vitro model for studying merogony.
- Subjects
TRANSCRIPTION factors; TOXOPLASMA gondii; MEROZOITES; OOCYSTS; IN vitro studies; PARASITES
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-44967-z