A surface transporter family conveys the trypanosome differentiation signal.

A surface transporter family conveys the trypanosome differentiation signal.
复制标题

DOI:
10.1038/nature07997
复制
发表时间:
2009-05-14
期刊:
影响因子:
64.8
通讯作者:
Matthews, Keith R.
Matthews, Keith R.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Dean, Samuel;Marchetti, Rosa;Kirk, Kiaran;Matthews, Keith R.

文献摘要

参考文献

被引文献

相似文献

微生物病原体利用环境线索触发感染哺乳动物宿主或传播给疾病载体所需的发育事件。引起非洲昏睡病的寄生虫对柠檬酸/顺乌头酸(CCA)产生反应,在传播给采采蝇媒介时启动生命周期发育。这需要通过暴露在低温下使寄生虫对CCA超敏,这种条件是在黄昏或黎明喂食采采蝇后遇到的。在这里,我们确定了一个羧酸转运蛋白家族,PAD(与分化相关的蛋白质)需要这种分化信号的感知。与锥虫对CCA的反应的预测一致,PAD蛋白在血流中的具有传播能力的“树桩型”寄生虫的表面上表达,并且至少一个成员是温度调节的,在低温下显示出升高的表达和表面进入。此外,RNAi介导的PAD表达消融减少了CCA诱导的分化,并消除了冷休克条件下的CCA超敏反应。除了作为这些寄生虫中分化信号的分子转换器之外,PAD蛋白还提供了能够区分锥虫在其哺乳动物宿主中的传播阶段的第一个表面标记。
Microbial pathogens use environmental cues to trigger the developmental events needed to infect mammalian hosts or transmit to disease-vectors. The parasites causing African sleeping sickness respond to citrate/cis aconitate (CCA) to initiate life-cycle development when transmitted to their tsetse-fly vector. This requires hypersensitization of the parasites to CCA by exposure to low temperature, conditions encountered after tsetse feeding at dusk or dawn. Here we identify a carboxylate-transporter family, PAD (Proteins Associated with Differentiation) required for perception of this differentiation signal. Consistent with predictions for the response of trypanosomes to CCA, PAD proteins are expressed on the surface of the transmission-competent ‘stumpy-form’ parasites in the bloodstream and at least one member is thermoregulated, showing elevated expression and surface-access at low-temperature. Moreover, RNAi-mediated ablation of PAD expression diminishes CCA-induced differentiation and eliminates CCA-hypersensitivity under cold-shock conditions. As well as being molecular transducers of the differentiation signal in these parasites, PAD proteins provide the first surface-marker able to discriminate the transmission-stage of trypanosomes in their mammalian host.
DOI: 10.1098/rstb.1989.0037
发表时间: 1989-06-12
影响因子: 6.3
作者:
SHERWIN, T;GULL, K
通讯作者: GULL, K
DOI: 10.1038/418742a
发表时间: 2002-08-15
期刊: NATURE
影响因子: 64.8
作者:
Fang, J;McCutchan, TF
通讯作者: McCutchan, TF
DOI: 10.1083/jcb.125.5.1147
发表时间: 1994-06
期刊: The Journal of cell biology
影响因子: --
作者:
Matthews KR;Gull K
通讯作者: Gull K
DOI: 10.1098/rspb.1912.0068
发表时间: 1912-08-01
期刊: PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-CONTAINING PAPERS OF A BIOLOGICAL CHARACTER
影响因子: --
作者:
Bruce, D;Harvey, D;Davey, JB
通讯作者: Davey, JB
DOI: 10.1073/pnas.0708023104
发表时间: 2007-10-16
影响因子: 11.1
作者:
Kamsteeg, Erik-Jan;Duffield, Amy S.;Caplan, Michael J.
通讯作者: Caplan, Michael J.