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Periostin contributes breast cancer progression by promoting an epithelial-mesenchymal transition and stem cell self-renewal

Abstract

上皮细胞间质转分化(EMT)是指在特定的生理或病理条件下,高度分化的、极性的、迁移能力弱的上皮细胞转化为去极性的、迁移能力强的间质细胞。EMT转分化在胚胎发育以及肿瘤侵袭转移过程中均起重要作用,且与上皮样细胞的干性获得密切相关。我们发现Periostin蛋白作为细胞外基质蛋白中的一种重要成分,在人乳腺癌组织及乳腺癌淋巴结转移组织中有高表达。Periostin蛋白能够诱导人乳腺上皮细胞及乳腺癌细胞发生EMT转分化,并增强细胞在体外的侵袭能力。同时外源高表达Periostin蛋白还能显著上调人乳腺上皮细胞及乳腺癌细胞中CD44+CD24-细胞亚群的比例,提高细胞体外成球能力,并使细胞获得干细胞样特...The epithelial to mesenchymal transition (EMT) is a highly conserved cellular program that allows polarized, well-differentiated epithelial cells to convert to unpolarized, motile mesenchymal cells under specific physiological and pathological conditions. EMT is critical for appropriate embryogenesis and plays a crucial role in tumorigenesis and cancer progression, even it is tied directly to the ...学位:理学硕士院系专业:生命科学学院生物学系_细胞生物学学号:2172008115258

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