Metastasis: tumor cells becoming MENAcing.

Metastasis: tumor cells becoming MENAcing.
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转移:肿瘤细胞变得险恶。

DOI:
10.1016/j.tcb.2010.10.001
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发表时间:
2011-02
影响因子:
19
通讯作者:
Condeelis, John
Condeelis, John
中科院分区:
生物学1区
文献类型:
--
作者:
Gertler, Frank;Condeelis, John

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在乳腺癌转移过程中,细胞从原发肿瘤迁移到血流中,将它们携带到远处的部位,在那里它们浸润,有时在靶器官内形成转移。这些细胞必须穿透致密的细胞外基质,包括乳腺导管/腺泡的基底膜,并向血管和淋巴管迁移,这是乳腺肿瘤细胞主要利用表皮生长因子(EGF)依赖性扩散和迁移活性执行的过程。在这里,我们专注于肌动蛋白调节蛋白Mena如何影响EGF引起的运动,侵袭和转移。最近的研究结果表明,在侵袭性迁移性肿瘤细胞中,赋予对EGF的高度敏感性和增加的迁移和迁移能力的Mena同种型被上调,而其他同种型被选择性下调。Mena亚型表达的这种变化使肿瘤细胞能够响应其他良性EGF刺激水平而侵入,并可能提供识别患者转移风险的机会。
During breast cancer metastasis, cells emigrate from the primary tumor to the bloodstream, which carries them to distant sites where they infiltrate and sometimes form metastases within target organs. These cells must penetrate the dense extracellular matrix comprising the basement membrane of the mammary duct/acinus and migrate toward blood and lymphatic vessels, processes that mammary tumor cells execute using primarily Epidermal Growth Factor (EGF)-dependent protrusive and migratory activity. Here, we focus on how the actin regulatory protein Mena affects EGF-elicited movement, invasion and metastasis. Recent findings indicate that, in invasive migratory tumor cells, Mena isoforms that endow heightened sensitivity to EGF and increased protrusive and migratory abilities are up-regulated, while other isoforms are selectively down-regulated. This change in Mena isoform expression enables tumor cells to invade in response to otherwise benign EGF stimulus levels and may offer an opportunity to identify metastatic risk in patients.
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