在丹图血型的人群中,红细胞血压可以预防严重的疟疾
Silvia N Kariuki1, Alejandro Marin-Menendez2, Viola Introini3
1Department of Epidemiology and Demography, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya.
Nature
|September 17, 2020
概括
丹图血型变体通过增加红细胞 (RBC) 张力来保护严重的疟疾,使疟疾寄生虫更难入侵. 这一发现解释了丹图
科学领域:
- 遗传学
- 寄生虫学
- 血液学
背景情况:
- 疟疾已对人类基因组产生重大影响,导致像状细胞特征这样的保护性遗传变异的选择.
- 丹图血型变异提供了与状细胞特征相比较的严重疟疾保护.
研究的目的:
- 阐明丹图血型变体对严重疟疾的保护机制.
- 为了研究Dantu对红细胞 (RBC) 侵袭的作用.
主要方法:
- 使用视频显微镜观察和分析疟疾寄生虫的红细胞入侵.
- 评估了与Dantu变异存在相关的红细胞表面蛋白质和红细胞膜张力.
主要成果:
- 丹图变异与改变的红细胞表面蛋白有关,但侵袭抑制与特定的受体- 连接体相互作用无关.
- 红细胞张力与红细胞侵袭效率之间发现了强烈的相关性.
- 鉴定出一个张力值,超过该值的红细胞入侵是罕见的,而丹图红细胞则表现出更高的张力,从而抵抗入侵.
结论:
- 增加红细胞张力是Dantu对严重疟疾的保护作用的主要机制.
- 红细胞膜张力是影响Plasmodium falciparum入侵效率的关键因素.
- 这些发现为疟疾寄生虫入侵动态和宿主遗传抵抗提供了新的见解.
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