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Mast cells control lung type 2 inflammation via prostaglandin E2-driven soluble ST2
Immunity ( IF 25.5 ) Pub Date : 2024-05-30 , DOI: 10.1016/j.immuni.2024.05.003
Kinan Alhallak 1 , Jun Nagai 1 , Kendall Zaleski 2 , Sofia Marshall 2 , Tamara Salloum 1 , Tahereh Derakhshan 1 , Hiroaki Hayashi 1 , Chunli Feng 2 , Radomir Kratchmarov 1 , Juying Lai 2 , Virinchi Kuchibhotla 1 , Airi Nishida 2 , Barbara Balestrieri 1 , Tanya Laidlaw 1 , Daniel F Dwyer 1 , Joshua A Boyce 1
Affiliation  

Severe asthma and sinus disease are consequences of type 2 inflammation (T2I), mediated by interleukin (IL)-33 signaling through its membrane-bound receptor, ST2. Soluble (s)ST2 reduces available IL-33 and limits T2I, but little is known about its regulation. We demonstrate that prostaglandin E (PGE) drives production of sST2 to limit features of lung T2I. PGE-deficient mice display diminished sST2. In humans with severe respiratory T2I, urinary PGE metabolites correlate with serum sST2. In mice, PGE enhanced sST2 secretion by mast cells (MCs). Mice lacking MCs, ST2 expression by MCs, or E prostanoid (EP) receptors by MCs showed reduced sST2 lung concentrations and strong T2I. Recombinant sST2 reduced T2I in mice lacking PGE or ST2 expression by MCs back to control levels. PGE deficiency also reversed the hyperinflammatory phenotype in mice lacking ST2 expression by MCs. PGE thus suppresses T2I through MC-derived sST2, explaining the severe T2I observed in low PGE states.

中文翻译:


肥大细胞通过前列腺素 E2 驱动的可溶性 ST2 控制肺部 2 型炎症



严重哮喘和鼻窦疾病是 2 型炎症 (T2I) 的后果,由白细胞介素 (IL)-33 信号通过其膜结合受体 ST2 介导。可溶性 (s)ST2 可减少可用的 IL-33 并限制 T2I,但对其调节知之甚少。我们证明前列腺素 E (PGE) 可以驱动 sST2 的产生,从而限制肺 T2I 的特征。缺乏 PGE 的小鼠表现出 sST2 减少。在患有严重呼吸道 T2I 的人中,尿 PGE 代谢物与血清 sST2 相关。在小鼠中,PGE 增强肥大细胞 (MC) 的 sST2 分泌。缺乏 MC、MC 表达 ST2 或 MC 表达 E 前列腺素 (EP) 受体的小鼠表现出 sST2 肺浓度降低和强 T2I。重组 sST2 通过 MC 将缺乏 PGE 或 ST2 表达的小鼠的 T2I 降低至对照水平。 PGE 缺乏还逆转了 MC 缺乏 ST2 表达的小鼠的高炎症表型。因此,PGE 通过 MC 衍生的 sST2 抑制 T2I,解释了在低 PGE 状态下观察到的严重 T2I。
更新日期:2024-05-30
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