American Association for Cancer Research
15357163mct171079-sup-191848_4_supp_5063589_pgcyyy.png (19.68 kB)

Figure S1 from Glycoprotein-130 Expression Is Associated with Aggressive Bladder Cancer and Is a Potential Therapeutic Target

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posted on 2023-04-03, 15:44 authored by Darryl T. Martin, Hongliang Shen, Jill M. Steinbach-Rankins, Xi Zhu, Katelyn K. Johnson, Jamil Syed, W. Mark Saltzman, Robert M. Weiss

Fig S1. Dose-response curve of bladder cancer cells upon SC144 treatment.



National Institute of Diabetes and Digestive and Kidney Diseases

Yale Comprehensive Cancer Center



Predicting bladder cancer progression is important in selecting the optimal treatment for bladder cancer. Because current diagnostic factors regarding progression are lacking, new factors are needed to further stratify the curative potential of bladder cancer. Glycoprotein-130 (GP130), a transmembrane protein, is central to a number of signal transduction pathways involved in tumor aggressiveness, making it an attractive target. We hypothesize that if GP130 is found in an aggressive population of bladder tumors, then blocking GP130 expression may inhibit bladder cancer growth. Herein, we quantitatively show, using 11 patient samples and four bladder cancer cell lines, that GP130 is expressed in the aggressive human bladder tumors and in high-grade bladder cancer cell lines. Moreover, GP130 is significantly correlated with tumor grade, node category, tumor category, and patient outcome. We demonstrated a tumor-specific GP130 effect by blocking GP130 expression in bladder tumor cells, which resulted in decreased cell viability and reduced cell migration. Furthermore, we reduced tumor volume by approximately 70% compared with controls by downregulating GP130 expression using chitosan-functionalized nanoparticles encapsulating GP130 siRNA in an in vivo bladder cancer xenograft mouse model. Our results indicate that GP130 expression is linked to the aggressiveness of bladder tumors, and blocking GP130 has therapeutic potential in controlling tumor growth.