相关实验视频
Updated: May 11, 2026

07:53
Proteomic Profiling of Macrophages by 2D Electrophoresis
Published on: November 4, 2014
概括
激活的巨细胞分泌出类似于血小板衍生生长因子 (PDGF) 的分子,在慢性炎症期间驱动细胞增殖. 这些发现揭示了炎症反应的关键机制.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 巨细胞在慢性炎症期间参与结缔组织细胞增殖.
- 巨细胞分泌巨细胞衍生生长因子 (MDGF),它是各种细胞类型的原体.
研究的目的:
- 研究PDGF类分子在人类巨细胞分泌的线粒体活性中的作用.
- 为了描述激活的巨细胞产生的PDGF类分子.
主要方法:
- 使用培养的人类气泡膜和腹巨细胞.
- 使用3T3细胞评估了线粒生成活性.
- 通过抗原相似性和受体结合试验检测到类似PDGF的分子.
- 北方分析检测到PDGF B链mRNA.
- 免疫沉确定了PDGF类蛋白质的新合成.
主要成果:
- 人类巨细胞分泌PDGF类分子,对3T3细胞具有线性活性.
- 确定了PDGF样分子的两个大小类 (37-39 kDa和12-17 kDa).
- 这些分子与PDGF具有抗原相似性,并与PDGF受体结合.
- 巨细胞合成PDGF B链mRNA和PDGF类蛋白质.
结论:
- 巨细胞产生和分泌PDGF类分子,这些分子在炎症条件下有助于细胞增殖.
- 这些发现强调了巨细胞是PDGF类生长因子的重要来源,影响着炎症组织反应.
相关概念视频
Receptor Downregulation in MVBs
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
Differentiation of Common Myeloid Progenitor Cells
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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...

