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Exposure to HIV is associated with altered composition of maternal microchimeric T cells in infants
The Journal of Infectious Diseases ( IF 5.0 ) Pub Date : 2024-10-22 , DOI: 10.1093/infdis/jiae521
Blair Armistead, M Quinn Peters, John Houck, Marc Carlson, Christina Balle, Nolawit Mulugeta, Clive M Gray, Heather B Jaspan, Whitney E Harrington

HIV exposed but uninfected infants (iHEU) display altered immunity and are at increased risk of infection. We previously reported that iHEU have decreased maternal microchimerism (MMc)—maternal cells transferred to the offspring in utero/during breastfeeding. We quantified MMc in T cell subpopulations in iHEU and unexposed infants (iHU) to determine whether a selective deficiency in MMc contributes to altered cellular immunity. Across all infants, MMc levels were highest in CD8+ T cells; however, the level of CD8+ T cell MMc was lower in iHEU versus iHU. In limited functional studies, we did not identify CMV-specific MMc during infant primary infection.

中文翻译:


HIV 暴露与婴儿母体微嵌合 T 细胞组成的改变有关



暴露于 HIV 但未感染的婴儿 (iHEU) 表现出免疫力改变,感染风险增加。我们之前报道过 iHEU 降低了母体微嵌合体 (MMc) — 母体细胞在子宫内/母乳喂养期间转移到后代。我们量化了 iHEU 和未暴露婴儿 (iHU) 中 T 细胞亚群中的 MMc,以确定 MMc 的选择性缺陷是否会导致细胞免疫改变。在所有婴儿中,CD8+ T 细胞中的 MMc 水平最高;然而,iHEU 中的 CD8 + T 细胞 MMc 水平低于 iHU。在有限的功能研究中,我们没有在婴儿原发感染期间识别 CMV 特异性 MMc。
更新日期:2024-10-22
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