由SMYD2甲基转移酶诱导的细胞骨重塑驱动乳腺癌转移
Alexandre G Casanova1, Gael S Roth1,2, Simone Hausmann3
1Grenoble Alpes University, CNRS UMR 5309, INSERM U 1209, Institute for Advanced Biosciences, Grenoble, France.
Cell discovery
|January 31, 2024
概括
针对SMYD2,这是乳腺癌转移的关键调节器,提供了一个新的治疗策略. 抑制SMYD2阻断了癌细胞的扩散,通过破坏SMYD2-BCAR3-FMNL通路来改善生存率.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 转移性乳腺癌仍然是一个重大的临床挑战,导致死亡率.
- 了解癌细胞分散的分子机制对于开发新疗法至关重要.
研究的目的:
- 为了确定乳腺癌转移的关键调节者.
- 调查针对这些调节器的治疗潜力.
主要方法:
- 研究了氨酸甲基转移酶SMYD2在乳腺癌中的作用.
- 使用了乳腺上皮特异性SMYD2切除的小鼠模型.
- 确定了BCAR3作为SMYD2的基质,并分析了其甲基化.
- 研究了甲基化BCAR3与FMNL蛋白的相互作用.
- 评估SMYD2抑制对癌细胞迁移,入侵和转移 in vitro 和 in vivo 的影响.
主要成果:
- 在侵袭性乳腺癌中,SMYD2过度表达,并驱动转移,但不是主要瘤生长.
- 在小鼠中,SMYD2切除可通过防止癌细胞转移显著改善存活率.
- SMYD2在K334处甲基化BCAR3,促进其与FMNL蛋白的相互作用.
- 这种相互作用调节了actin细胞骨动力学和lamellipodia形成,对于细胞迁移至关重要.
- 在各种模型中,药理上抑制SMYD2有效地减少了转移性传播.
结论:
- 通过BCAR3-FMNL轴,SMYD2充当乳腺癌转移的主要调节者.
- 向SMYD2-BCAR3-FMNL通路代表了预防乳腺癌转移的有希望的治疗策略.
相关概念视频
Destabilization of Microtubules
2.7K
The destabilization of microtubules can occur during different stages of the microtubule lifecycle, such as nucleation or elongation. It can take place at either end of the microtubule or in the microtubule lattices as a whole. The lifespan of individual microtubules within a cell varies according to the cell type and stage of the cell cycle. During interphase, the lifespan of the microtubule is about 30 minutes, while during cell division, it is about 15 minutes. In axonal microtubules of...
2.7K
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
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
Cytoskeletal Coordination in Cell Migration
4.8K
A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
4.8K
Chemotaxis and Direction of Cell Migration
3.4K
Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon...
3.4K
Microtubule Formation
5.8K
Microtubules are dynamic structures that undergo continuous assembly and disassembly. They originate from specialized multi-protein complexes known as microtubule organizing centers or MTOCs. Within the MTOC, the point of origin of the microtubule is known as the minus end, while the end radiating outward is the plus end. Microtubules serve two primary functions — the organization of spindle complexes to separate sister chromatids during mitotic or meiotic cell division and the formation...
5.8K


