Fleiszig S M, Vallas V, Jun C H, Mok L, Balkovetz D F, Roth M G, Mostov K E
The Morton D. Sarver Laboratory for Cornea and Contact Lens Research, School of Optometry, University of California, Berkeley, California, USA.
Infect Immun. 1998 Jul;66(7):3443-6. doi: 10.1128/IAI.66.7.3443-3446.1998.
Normal cell polarity protects epithelial cells against Pseudomonas aeruginosa invasion and cytotoxicity. Using epithelial cell clones with selective defects in sorting of membrane constituents, and using hepatocyte growth factor pretreatment, we found that polarized susceptibility to P. aeruginosa can be altered without disrupting tight junctions. The results also showed that cellular susceptibility factors for invasion and cytotoxicity are not the same, although both are localized to the basolateral cell surface in polarized epithelial cells.
正常细胞极性可保护上皮细胞免受铜绿假单胞菌的侵袭和细胞毒性作用。利用在膜成分分选方面存在选择性缺陷的上皮细胞克隆,并采用肝细胞生长因子预处理,我们发现,在不破坏紧密连接的情况下,对铜绿假单胞菌的极化易感性可发生改变。结果还表明,尽管在极化上皮细胞中,侵袭和细胞毒性的细胞易感因子均定位于基底外侧细胞表面,但二者并不相同。