基因表达分析显示,儿童对疟疾的反应因年龄不同而有所不同
Kieran Tebben1, Salif Yirampo2, Drissa Coulibaly2
1University of Maryland, Baltimore.
Research square
|November 14, 2023
概括
儿童的疟疾感染因寄生虫水平和年龄而异. 较高的寄生虫密度会影响免疫细胞的活动,而年龄会影响与生俱来的和适应性免疫反应对菌.
科学领域:
- 基因组学就是基因组学.
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 马里的儿童经常出现疟疾发作,感染严重程度和寄生虫密度的个体差异很大.
- 了解驱动这种变化的因素对于有效的疟疾控制和治疗至关重要.
研究的目的:
- 为了研究患有有症状的Plasmodium falciparum疟疾的儿童的宿主和寄生虫基因表达.
- 识别导致疟疾感染结果变化的宿主和寄生虫因素.
主要方法:
- 在136名儿童中同时描述宿主 (9,205个基因) 和Plasmodium (2,484个基因) 表达特征.
- 基因表达解卷以估计免疫细胞比例和寄生虫阶段.
- 差异基因表达分析调整为寄生病和年龄.
主要成果:
- 寄生虫病显著影响宿主和寄生虫的基因表达,与中性细胞和T细胞水平相关.
- 较高的寄生素血量与中性粒细胞的增加和T细胞的减少有关,这表明免疫细胞的再分配.
- 孩子的年龄与基因表达相关;年长的孩子有更多的男性性细胞,而年轻的孩子表现出更强的先天免疫力,而年长的孩子表现出更强的适应性免疫力.
结论:
- 宿主免疫反应和寄生虫调节在症状性P. falciparum感染期间有很大差异.
- 寄生病和宿主年龄是影响疟疾病原和免疫特征的关键因素.
- 针对儿童的疟疾研究和临床管理中,年龄特定的考虑是必不可少的.
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