التفاصيل البيبلوغرافية
| العنوان: |
Role of amylopectin synthesis in Toxoplasma gondii and its implication in vaccine development against toxoplasmosis |
| المؤلفون: |
Congcong Lyu, Xuke Yang, Jichao Yang, Lun Hou, Yanqin Zhou, Junlong Zhao, Bang Shen |
| المصدر: |
Open Biology, Vol 11, Iss 6 (2021) |
| بيانات النشر: |
The Royal Society, 2021. |
| سنة النشر: |
2021 |
| المجموعة: |
LCC:Biology (General) |
| مصطلحات موضوعية: |
chronic infection, bradyzoite, reactivation, starch synthase, CDPK2, Biology (General), QH301-705.5 |
| الوصف: |
Toxoplasma gondii is a ubiquitous pathogen infecting one-third of the global population. A significant fraction of toxoplasmosis cases is caused by reactivation of existing chronic infections. The encysted bradyzoites during chronic infection accumulate high levels of amylopectin that is barely present in fast-replicating tachyzoites. However, the physiological significance of amylopectin is not fully understood. Here, we identified a starch synthase (SS) that is required for amylopectin synthesis in T. gondii. Genetic ablation of SS abolished amylopectin production, reduced tachyzoite proliferation, and impaired the recrudescence of bradyzoites to tachyzoites. Disruption of the parasite Ca2+-dependent protein kinase 2 (CDPK2) was previously shown to cause massive amylopectin accumulation and bradyzoite death. Therefore, the Δcdpk2 mutant is thought to be a vaccine candidate. Notably, deleting SS in a Δcdpk2 mutant completely abolished starch accrual and restored cyst formation as well as virulence in mice. Together these results suggest that regulated amylopectin production is critical for the optimal growth, development and virulence of Toxoplasma. Not least, our data underscore a potential drawback of the Δcdpk2 mutant as a vaccine candidate as it may regain full virulence by mutating amylopectin synthesis genes like SS. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2046-2441 |
| Relation: |
https://doaj.org/toc/2046-2441 |
| DOI: |
10.1098/rsob.200384 |
| URL الوصول: |
https://doaj.org/article/a477c7748d844c9d89c8b3db6734c931 |
| رقم الانضمام: |
edsdoj.477c7748d844c9d89c8b3db6734c931 |
| قاعدة البيانات: |
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