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Infect Immun, July 1998, p. 3443-3446, Vol. 66, No. 7
0019-9567/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Susceptibility of Epithelial Cells to Pseudomonas aeruginosa Invasion and Cytotoxicity Is Upregulated by Hepatocyte Growth Factor

Suzanne M. J. Fleiszig,1,* Vicky Vallas,1 Cindy H. Jun,1 Leo Mok,1 Daniel F. Balkovetz,2,dagger Michael G. Roth,3 and Keith E. Mostov2

The Morton D. Sarver Laboratory for Cornea and Contact Lens Research, School of Optometry, University of California, Berkeley,1 and Department of Anatomy and Biochemistry, University of California, San Francisco,2 California, and University of Texas Southwestern Medical Center at Dallas, Dallas, Texas3

Received 6 March 1998/Accepted 16 April 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.


* Corresponding author. Mailing address: School of Optometry, University of California, Berkeley, CA 94720-2020. Phone: (510) 643-0990. Fax: (510) 643-5109. E-mail: fleiszig{at}socrates.berkeley.edu.

dagger Present address: Departments of Medicine and Cell Biology, University of Alabama at Birmingham and Department of Veterans Affairs, Birmingham Veterans Affairs Medical Center, Birmingham, Alabama.


Infect Immun, July 1998, p. 3443-3446, Vol. 66, No. 7
0019-9567/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.



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