癌细胞侵入性的细胞间转移通过内体介导的蛋白酶分离
Eva Maria Wenzel1,2, Nina Marie Pedersen1,2, Liv Anker Elfmark1,2
1Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Oslo, Norway.
Nature communications
|February 10, 2024
概括
癌细胞可以通过MT1-MMP (矩阵金属蛋白酶14) 的可溶性片段将侵入性转移到非侵入性细胞. 这种转移是由酸性内体内TKS4/5蛋白质调解的,促进癌细胞的入侵.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
背景情况:
- 过度表达MT1-MMP (矩阵金属蛋白酶14) 与增加癌细胞入侵有关.
- 通过MT1-MMP促进侵入性细胞间转移的确切机制尚未完全理解.
研究的目的:
- 研究MT1-MMP阳性癌细胞如何诱导MT1-MMP阴性细胞的侵入性.
- 阐明TKS4和TKS5适配蛋白在这个过程中的作用.
主要方法:
- 研究了癌细胞之间可溶性MT1-MMP ectodomain的转移.
- 利用技术研究内体内蛋白质相互作用,包括pH和特定蛋白质域 (PX域) 的作用.
- 研究了含有MT1-MMPectodomain的细胞外囊泡的形成和分泌.
主要成果:
- 具有MT1-MMP阳性的细胞将MT1-MMP的活性域转移到非侵入性细胞中,使其具有侵入性.
- TKS4和TKS5对于这种转移至关重要,它们促进了ADAM介导的MT1-MMP在酸性内分体内的分裂.
- TKS4/5的PX域与MT1-MMP和酸酸和酸酸之间的相互作用中介,通过细胞外囊泡促进MT1-MMP的分泌和分泌.
结论:
- TKS4/5适配蛋白是癌细胞侵入性的细胞间转移的关键媒介.
- 通过TKS4/5促进的,在酸性内体中由ADAM介导的MT1-MMP分泌是一种促进癌症扩散的新机制.
- 棚MT1-MMP外基因作为一种可溶性因子,将受体细胞转化为侵入性表型.
相关概念视频
Cancer Cell Migration through Invadopodia
2.3K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.3K
Metastasis
5.5K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
5.5K
Cell Migration
4.8K
Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
4.8K
Adaptive Mechanisms in Cancer Cells
5.8K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.8K
Phagocytosis of Apoptotic Cells
3.8K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...
Normal cells contain receptors that prevent them from being recognized...
3.8K
Receptor Downregulation in MVBs
2.1K
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...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
2.1K


