相关实验视频

Updated: Jul 17, 2026

Long Term Intravital Multiphoton Microscopy Imaging of Immune Cells in Healthy and Diseased Liver Using CXCR6.Gfp Reporter Mice

Long Term Intravital Multiphoton Microscopy Imaging of Immune Cells in Healthy and Diseased Liver Using CXCR6.Gfp Reporter Mice

Published on: March 24, 2015

IQGAP1参与骨髓衍生的巨细胞招募,并涉及肝脏炎症/纤维化

Na Chang¹, Yuehan Ma¹, Jing Liu¹

¹Department of Cell Biology, Laboratory for Clinical Medicine, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, No.10 Xitoutiao You An Men, Beijing, 100069, China.

Journal of molecular medicine (Berlin, Germany)

|July 19, 2025

概括

含有GTPase激活蛋白1 (IQGAP1) 的智商动机驱动了基1-酸盐诱导的巨细胞迁移和肝纤维化. 在巨细胞中降低IQGAP1可缓解肝炎和纤维化,突出其治疗潜力.

科学领域:

免疫学免疫学免疫学
细胞生物学细胞生物学
肝病学肝病学是一种肝病学.

背景情况:

含有GTPase激活蛋白1 (IQGAP1) 的智商模式是参与细胞迁移的支架蛋白.
斯芬哥辛1-酸盐 (S1P) 促进巨细胞的招募和慢性肝炎/纤维化.
此前,IQGAP1在S1P介导的巨细胞迁移和肝脏病理方面的特定作用尚不清楚.

研究的目的:

研究IQGAP1在S1P诱导的骨髓衍生巨细胞 (BMDM) 迁移中的作用.
确定IQGAP1对肝炎和纤维化的贡献.
在这种情况下,阐明了IQGAP1调节的基础分子机制.

主要方法:

使用CCl4,BDL或MCDHF饮食在小鼠中诱导肝纤维化.
免疫光和单细胞RNA测序以评估IQGAP1在纤维性肝脏中的表达.
在实验室和体内,IQGAP1在使用siRNA-GeRPs的巨细胞中被淘汰.
博伊登室内测试用于BMDM迁移,RT-qPCR和西部斑块用于基因表达分析.

主要成果:

在肝脏巨细胞中,IQGAP1的表达显著升高,并且与人类和小鼠纤维性肝脏中的炎症标志物相关.
在巨细胞中选择性IQGAP1敲击改善了体内肝炎和纤维化.
在S1P治疗的BMDM中,IQGAP1表达增加,对S1P诱导的迁移至关重要.
通过S1P受体2/3 (S1PR2/3) 和Hu抗原R (HuR) 信号传递,S1P提高了IQGAP1的调节.
通过S1P对miR-455-5p的下调也影响了IQGAP1表达和BMDM迁移.

结论:

IQGAP1是S1P诱导的BMDM迁移的关键调解者.
IQGAP1在促进慢性肝炎和纤维化方面发挥着重要作用.
准IQGAP1为肝炎疾病提供了潜在的治疗策略.

关键词:

来自骨髓的巨细胞.细胞迁移细胞迁移含有GTPase激活蛋白1的智商模式肝脏炎症和纤维化斯芬哥辛1-酸盐是一种酸盐.

更多相关视频

Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation

Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation

Published on: April 3, 2017

An Ectopic Chemokine Expression Model for Testing Macrophage Recruitment In Vivo

An Ectopic Chemokine Expression Model for Testing Macrophage Recruitment In Vivo

Published on: September 25, 2019

相关概念视频

TGF - β Signaling Pathway

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...

IP3/DAG Signaling Pathway

IP3/DAG Signaling Pathway

Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and produces two-second...