Department of Nephrology, University of Heidelberg, 69120 Heidelberg, Germany.
Department of Obstetrics and Gynecology, University of Heidelberg, 69120 Heidelberg, Germany.
Int J Mol Sci. 2021 Aug 31;22(17):9501. doi: 10.3390/ijms22179501.
Dysregulations in the differentiation of CD4-regulatory-T-cells (Tregs) and CD4-responder-T-cells (Tresps) are involved in the development of active systemic lupus erythematosus (SLE). Three differentiation pathways of highly proliferative inducible costimulatory molecule (ICOS)- and less proliferative ICOS-CD45RACD31-recent-thymic-emigrant (RTE)-Tregs/Tresps via CD45RACD31-memory-Tregs/Tresps (CD31-memory-Tregs/Tresps), their direct proliferation via CD45RACD31-mature naïve (MN)-Tregs/Tresps, and the production and differentiation of resting MN-Tregs/Tresp into CD45RACD31-memory-Tregs/Tresps (CD31-memory-Tregs/Tresps) were examined in 115 healthy controls, 96 SLE remission patients, and 20 active disease patients using six color flow cytometric analysis. In healthy controls an appropriate sequence of these pathways ensured regular age-dependent differentiation. In SLE patients, an age-independently exaggerated differentiation was observed for all Treg/Tresp subsets, where the increased conversion of resting MN-Tregs/Tresps particularly guaranteed the significantly increased ratios of ICOS-Tregs/ICOS-Tresps and ICOS-Tregs/ICOS-Tresps during remission. Changes in the differentiation of resting ICOS-MN-Tresps and ICOS-MN-Tregs from conversion to proliferation caused a significant shift in the ratio of ICOS-Tregs/ICOS-Tresps in favor of ICOS-Tresps and a further increase in the ratio of ICOS-Tregs/ICOS-Tresps with active disease. The differentiation of ICOS-RTE-Tregs/Tresps seems to be crucial for keeping patients in remission, where their limited production of proliferating resting MN-Tregs may be responsible for the occurrence of active disease flares.
CD4 调节性 T 细胞(Tregs)和 CD4 应答性 T 细胞(Tresps)分化失调与活动性系统性红斑狼疮(SLE)的发展有关。通过 CD45RACD31-记忆-Tregs/Tresps(CD31-记忆-Tregs/Tresps)、CD45RACD31-成熟初始(MN)-Tregs/Tresps 的直接增殖以及静止 MN-Tregs/Tresp 向 CD45RACD31-记忆-Tregs/Tresps(CD31-记忆-Tregs/Tresps)的产生和分化,研究了 115 例健康对照、96 例 SLE 缓解患者和 20 例活动期患者的三种高增殖诱导共刺激分子(ICOS)和低增殖 ICOS-CD45RACD31-最近胸腺迁出(RTE)-Tregs/Tresps 的增殖性诱导分化途径。在健康对照组中,这些途径的适当顺序确保了正常的年龄依赖性分化。在 SLE 患者中,所有 Treg/Tresp 亚群均观察到年龄独立的过度分化,其中静止 MN-Tregs/Tresps 的转化率增加尤其保证了缓解期 ICOS-Tregs/ICOS-Tresps 和 ICOS-Tregs/ICOS-Tresps 比值的显著增加。静止 ICOS-MN-Tresps 和 ICOS-MN-Tregs 从转化为增殖的分化变化导致 ICOS-Tregs/ICOS-Tresps 比值向 ICOS-Tresps 倾斜,并随着疾病的活动进一步增加 ICOS-Tregs/ICOS-Tresps 比值。ICOS-RTE-Tregs/Tresps 的分化对于使患者保持缓解状态似乎至关重要,其增殖性静止 MN-Tregs 的有限产生可能是导致疾病活动发作的原因。