脂质编排的膜回路通过与纤维细胞的功能相互作用协调杆细胞成熟和过敏反应
Yoshitaka Taketomi1, Takayoshi Higashi2, Kuniyuki Kano3
1Laboratory of Microenvironmental and Metabolic Health Sciences, Center for Disease Biology and Integrative Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Lipid Metabolism Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan.
Immunity
|July 13, 2024
概括
乳腺细胞 (MC) 成熟需要与纤维细胞进行通信,由脂质协调. 一个新发现的脂质信号循环,涉及酸 (LPA) 和前列腺素D2 (PGD2),对MC发育和过敏反应至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 乳腺细胞 (MC) 成熟对组织微环境至关重要,但机制尚不清楚.
- MC-纤维细胞相互作用对于MC成熟至关重要.
研究的目的:
- 阐明基质细胞成熟背后的分子机制.
- 确定关键的脂质介质和参与MC-纤维细胞通信的信号通路.
主要方法:
- 具有脂质相关基因缺陷的小鼠谱系的表型查.
- 对 lysophosphatidic acid (LPA) 受体LPA1,脂酶PLA2G3,前列腺素D2 (PGD2) 合成酶L-PGDS和PGD2受体DP1的分析.
- 研究了细胞外囊泡 (EVs),自毒素 (ATX) 和IL-33-ST2信号传递的作用.
主要成果:
- 删除LPA1,PLA2G3,L-PGDS,或DP1损害了MC成熟和过敏反应.
- 在EV上由MC分泌的PLA2G3提供了由纤维细胞ATX转化为LPA的溶解脂.
- 纤维细胞LPA1集成整合蛋白,IL-33-ST2和PGD2信号用于MC成熟.
- 缺陷的MC成熟被LPA1激动剂或PLA2G3修饰的EV挽救.
结论:
- 一个涉及PLA2G3,LPA,PGD2,整体和细胞因子的脂质介导的膜回路微调了MC-纤维细胞通信.
- 这种电路对于保证乳腺细胞成熟至关重要.
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