E-selectin-mediated rolling facilitates pancreatic cancer cell adhesion to hyaluronic acid.

E-selectin-mediated rolling facilitates pancreatic cancer cell adhesion to hyaluronic acid.
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E-选择素介导的滚动促进胰腺癌细胞与透明质酸的粘附。

DOI:
10.1096/fj.201700331r
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发表时间:
2017
期刊:
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
影响因子:
--
通讯作者:
Konstantopoulos,Konstantinos
Konstantopoulos,Konstantinos
中科院分区:
--
文献类型:
--
作者:
Shea,DanielJ;Li,YiW;Stebe,KathleenJ;Konstantopoulos,Konstantinos

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肿瘤细胞外渗是一个多步骤的过程,在此之前,通过形成特异性受体-配体键,细胞在血管壁上滚动和停滞。受体-配体键的强度、可用性和数量调节肿瘤细胞系留、滚动和粘附于血管壁的速率。虽然选择素介导的滚动机制已被广泛研究,但关于肿瘤细胞如何在选择素上滚动以促进粘附到具有不同动力学性质的不同底物结合蛋白质的知之甚少。通过使用多组分蛋白质图案化和微流控系统,我们评估了E-选择素依赖性滚动如何调节透明质酸(HA)粘附作为流体剪切力,接触时间,以及E-选择素和HA区域之间的间隔图案化的基板上的函数。我们发现,在剪切流中,在E-选择素上滚动的肿瘤细胞与HA结合的可能性是非滚动细胞的2.40倍。此外,E-选择素依赖性滚动通过物理减慢细胞并使它们能够定位在表面近端来促进与HA的粘附,从而增加粘附的速率。更好地了解生理剪切下的肿瘤细胞粘附将导致新的诊断检测方法的发展,并为最终阻止转移的临床方法铺平道路。Shea,D. J.,Li,Y. W.,Stebe,K. J.,Konstantopoulos,K. E-选择素介导的滚动促进胰腺癌细胞与透明质酸的粘附。
Tumor cell extravasation is a multistep process preceded by cell rolling and arrest on the vessel wall via the formation of specific receptor–ligand bonds. The strength, availability, and number of receptor–ligand bonds regulate the rate by which tumor cells tether, roll, and adhere to vascular walls. Although the mechanics of selectin-mediated rolling have been extensively studied, little is known regarding how tumor cell rolling on selectins facilitates adhesion to a distinct substrate-bound protein with different kinetic properties. By using multicomponent protein patterning and a microfluidic system, we evaluated how E-selectin-dependent rolling modulates hyaluronic acid (HA) adhesion as a function of fluid shear, contact time, and the spacing between E-selectin and HA regions patterned on the substrate. We show that tumor cells rolling on E-selectin were ∼40-fold more likely to bind to HA than nonrolling cells in shear flow. Furthermore, E-selectin-dependent rolling promotes adhesion to HA by both physically slowing cells and enabling them to position proximal to the surface, thereby increasing the on rate of adhesion. A better understanding of tumor cell adhesion under physiologic shear would lead to the development of new diagnostic assays and pave the way to clinical approaches aimed ultimately to halt metastasis.—Shea, D. J., Li, Y. W., Stebe, K. J., Konstantopoulos, K. E-selectin-mediated rolling facilitates pancreatic cancer cell adhesion to hyaluronic acid.
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影响因子: 9.6
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