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Absence of Foxp3+ Regulatory T Cells during Allergen Provocation Does Not Exacerbate Murine Allergic Airway Inflammation

机译:过敏原的挑衅不会不会加剧鼠过敏性气道炎症中的Foxp3 +调节性T细胞的缺失

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摘要

Regulatory T cells (Tregs) play a non-redundant role in maintenance of immune homeostasis. This is achieved by suppressing both, priming of naïve cells and effector cell functions. Although Tregs have been implicated in modulating allergic immune responses, their influence on distinct phases of development of allergies remains unclear. In this study, by using bacterial artificial chromosome (BAC)-transgenic Foxp3-DTR (DEREG) mice we demonstrate that the absence of Foxp3+ Tregs during the allergen challenge surprisingly does not exacerbate allergic airway inflammation in BALB/c mice. As genetic disposition due to strain specificity may contribute significantly to development of allergies, we performed similar experiment in C57BL/6 mice, which are less susceptible to allergy in the model of sensitization used in this study. We report that the genetic background does not influence the consequence of this depletion regimen. These results signify the temporal regulation exerted by Foxp3+ Tregs in limiting allergic airway inflammation and may influence their application as potential therapeutics.
机译:调节性T细胞(Tregs)在维持免疫稳态方面起着非冗余的作用。这可以通过抑制原始细胞的启动和效应细胞功能来实现。尽管Tregs与调节过敏性免疫反应有关,但它们对过敏性发展的不同阶段的影响仍不清楚。在这项研究中,通过使用细菌人工染色体(BAC)-转基因Foxp3-DTR(DEREG)小鼠,我们证明了在变应原刺激过程中Foxp3 + Treg的缺失令人惊讶地不会加剧BALB中的过敏性气道炎症/ c小鼠。由于因菌株特异性而引起的遗传处置可能极大地促进了过敏的发生,因此我们在C57BL / 6小鼠中进行了类似的实验,在本研究中使用的致敏模型中,它们对过敏的敏感性较低。我们报告遗传背景不会影响此耗竭方案的结果。这些结果表明Foxp3 + Treg在限制过敏性气道炎症中发挥了暂时性调节作用,并可能影响其作为潜在治疗剂的应用。

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