血管生成素样蛋白 4 与基质蛋白相互作用调节伤口愈合。
Angiopoietin-like 4 interacts with matrix proteins to modulate wound healing.
机构信息
From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551.
National Skin Centre, 1 Mandalay Road, Singapore 308205.
出版信息
J Biol Chem. 2010 Oct 22;285(43):32999-33009. doi: 10.1074/jbc.M110.108175. Epub 2010 Aug 21.
A dynamic cell-matrix interaction is crucial for a rapid cellular response to changes in the environment. Appropriate cell behavior in response to the changing wound environment is required for efficient wound closure. However, the way in which wound keratinocytes modify the wound environment to coordinate with such cellular responses remains less studied. We demonstrated that angiopoietin-like 4 (ANGPTL4) produced by wound keratinocytes coordinates cell-matrix communication. ANGPTL4 interacts with vitronectin and fibronectin in the wound bed, delaying their proteolytic degradation by metalloproteinases. This interaction does not interfere with integrin-matrix protein recognition and directly affects cell-matrix communication by altering the availability of intact matrix proteins. These interactions stimulate integrin- focal adhesion kinase, 14-3-3, and PKC-mediated signaling pathways essential for effective wound healing. The deficiency of ANGPTL4 in mice delays wound re-epithelialization. Further analysis revealed that cell migration was impaired in the ANGPTL4-deficient keratinocytes. Altogether, the findings provide molecular insight into a novel control of wound healing via ANGPTL4-dependent regulation of cell-matrix communication. Given the known role of ANGPTL4 in glucose and lipid homeostasis, it is a prime therapeutic candidate for the treatment of diabetic wounds. It also underscores the importance of cell-matrix communication during angiogenesis and cancer metastasis.
细胞-基质的动态相互作用对于细胞对环境变化的快速反应至关重要。为了实现有效的伤口闭合,伤口角质形成细胞需要对不断变化的伤口环境做出适当的反应。然而,伤口角质形成细胞改变伤口环境以与这些细胞反应相协调的方式仍研究较少。我们证明了由伤口角质形成细胞产生的血管生成素样蛋白 4(ANGPTL4)协调细胞-基质通讯。ANGPTL4 与伤口基质中的纤连蛋白和 vitronectin 相互作用,延迟它们被金属蛋白酶的蛋白水解降解。这种相互作用不干扰整合素-基质蛋白的识别,而是通过改变完整基质蛋白的可用性,直接影响细胞-基质通讯。这些相互作用刺激整合素-粘着斑激酶、14-3-3 和蛋白激酶 C 介导的信号通路,这些通路对于有效的伤口愈合至关重要。ANGPTL4 缺失的小鼠延迟了伤口再上皮化。进一步的分析表明,ANGPTL4 缺失的角质形成细胞的细胞迁移受损。总之,这些发现为通过 ANGPTL4 依赖的细胞-基质通讯调控来控制伤口愈合提供了分子见解。鉴于 ANGPTL4 在葡萄糖和脂质稳态中的已知作用,它是治疗糖尿病伤口的主要治疗候选物。这也强调了细胞-基质通讯在血管生成和癌症转移过程中的重要性。
相似文献
J Biol Chem. 2010-8-21
Int J Low Extrem Wounds. 2014-3
Acta Biochim Biophys Sin (Shanghai). 2023-7-3
PLoS One. 2011-9-22
引用本文的文献
Cancers (Basel). 2025-7-16
Curr Med Chem. 2025
Proc Natl Acad Sci U S A. 2024-1-2
Acta Biochim Biophys Sin (Shanghai). 2023-7-3
Inflamm Res. 2023-6
本文引用的文献
Curr Diabetes Rev. 2006-2
Nat Rev Mol Cell Biol. 2007-3
Semin Cancer Biol. 2006-6