A heat-shock response regulated by the PfAP2-HS transcription factor protects human malaria parasites from febrile temperatures.
A heat-shock response regulated by the PfAP2-HS transcription factor protects human malaria parasites from febrile temperatures.
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由PfAP2-HS转录因子调控的热休克反应保护人类疟疾寄生虫免受高温的影响。
DOI:
10.1038/s41564-021-00940-w
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发表时间:
2021-09
影响因子:
28.3
通讯作者:
Cortés A
中科院分区:
文献类型:
--
作者:
Tintó-Font E;Michel-Todó L;Russell TJ;Casas-Vila N;Conway DJ;Bozdech Z;Llinás M;Cortés A
Periodic fever is a characteristic clinical feature of human malaria, but how parasites survive febrile episodes is not known. Although Plasmodium spp. genomes encode a full set of chaperones, they lack the conserved eukaryotic transcription factor HSF1, which activates the expression of chaperones upon heat-shock. Here, we show that PfAP2-HS, a transcription factor in the ApiAP2 family, regulates the protective heat-shock response in Plasmodium falciparum. PfAP2-HS activates transcription of hsp70–1 and hsp90 at elevated temperatures. The main binding site of PfAP2-HS in the entire genome coincides with a tandem G-box DNA motif in the hsp70–1 promoter. Engineered parasites lacking PfAP2-HS have reduced heat-shock survival and severe growth defects at 37°C, but not at 35°C. Parasites lacking PfAP2-HS also have increased sensitivity to imbalances in protein homeostasis (proteostasis) produced by artemisinin, the frontline antimalarial drug, or by the proteasome inhibitor epoxomicin. We propose that PfAP2-HS contributes to maintenance of proteostasis under basal conditions and upregulates specific chaperone-encoding genes at febrile temperatures to protect the parasite against protein damage.
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影响因子:
9.8
作者:
Bozdech, Zbynek;Llinas, Manuel;Pulliam, Brian Lee;Wong, Edith D;Zhu, Jingchun;DeRisi, Joseph L
通讯作者:
DeRisi, Joseph L
影响因子:
6.7
作者:
Cortés A;Carret C;Kaneko O;Yim Lim BY;Ivens A;Holder AA
通讯作者:
Holder AA
影响因子:
6.7
作者:
Campbell TL;De Silva EK;Olszewski KL;Elemento O;Llinás M
通讯作者:
Llinás M
影响因子:
14.9
作者:
Balaji S;Babu MM;Iyer LM;Aravind L
通讯作者:
Aravind L
影响因子:
46.9
作者:
Ghorbal, Mehdi;Gorman, Molly;Lopez-Rubio, Jose-Juan
通讯作者:
Lopez-Rubio, Jose-Juan