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SLC38A5通过增强 lysosomal 酸化来加剧DC介导的牛皮形皮肤炎症

Leqing Zhu¹, Xichun Xia², Guangqiang Li³

¹The Biomedical Translational Research Institute, Key Laboratory of Ministry of Education for Viral Pathogenesis & Infection Prevention and Control, Health Science Center (School of Medicine), Jinan University, Guangzhou 510632, China; Department of Dermatology, First Affiliated Hospital, Health Science Center (School of Medicine), Jinan University, Guangzhou 510632, China; Guangzhou National Laboratory, Guangzhou International BioIsland, Guangzhou 510005, China.

|August 2, 2023

概括

氨基酸载体SLC38A5在牛皮中被上调,通过使树突细胞 (DC) 中的溶酶体酸化并促进炎症来驱动疾病. 抑制SLC38A5可以治疗牛皮.

科学领域:

皮肤病学皮肤病学
免疫学免疫学免疫学
细胞生物学细胞生物学

背景情况:

氨基酸 (aa) 代谢与牛皮病原发生有关.
特定氨基酸载体在牛皮的作用尚不清楚.
树突细胞 (DCs) 在牛皮炎症中起着至关重要的作用.

研究的目的:

为了研究氨基酸载体在牛皮中的作用.
阐明SLC38A5对牛皮病原发生的作用机制.
确定SLC38A5作为牛皮的潜在治疗标.

主要方法:

分析SLC38A5表达在人类和小鼠牛皮病皮肤.
在SLC38A5缺乏的小鼠模型中评估牛皮病原体.
在树突细胞 (DCs) 内的SLC38A5局部化和功能的研究.
测量溶酶体酸化和促炎性细胞因子的产生.

主要成果:

一种依赖的中性氨基酸载体SLC38A5在牛皮的皮肤中显著上调.
缺乏SLC38A5显著改善了牛皮的发病因子.
SLC38A5主要表达在牛皮病变内的DC中,并局限于溶解体.
SLC38A5增强了溶酶体酸化,导致TLR7激活和增加IL-23和IL-1β的产生.

结论:

在牛皮中,SLC38A5通过促进DCs中的溶酶体酸化,发挥了致病作用.
这种机制涉及TLR7激活和随后的促炎细胞因子释放,加剧了牛皮炎的炎症.
SLC38A5代表了治疗牛皮的新和有前途的治疗标.

关键词:

CP: 免疫学免疫学在 SLC38A5A5 中.树突细胞是一种树突细胞.这是一种炎症炎症炎症炎症.lysosomal 酸性化发生的情况.牛皮是一种牛皮.

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Lysosomal Hydrolases

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Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...