Abstract:
:Cancer-initiating cell (CIC) is critical in cancer development, maintenance and recurrence. The reverse expression pattern of coxsackie and adenovirus receptor (CAR) and αν integrin in bladder cancer decreases the infection efficiency of adenovirus. We constructed Arg-Gly-Asp (RGD)-modified oncolytic adenovirus, carrying EGFP or TNF-related apoptosis-inducing ligand (TRAIL) gene (Onco(Ad).RGD-hTERT-EGFP/TRAIL), and applied them to CAR-negative bladder cancer T24 cells and cancer-initiating T24 sphere cells. Onco(Ad).RGD-hTERT-EGFP had enhanced infection ability and cytotoxic effect on T24 cells and T24 sphere cells, but little cytoxicity on normal urothelial SV-HUC-1 cells compared with the unmodified virus Onco(Ad).hTERT-EGFP. Notably, Onco(Ad).RGD-hTERT-TRAIL induced apoptosis in T24 cells and T24 sphere cells. Furthermore, it completely inhibited xenograft initiation established by the oncolytic adenovirus-pretreated T24 sphere cells, and significantly suppressed tumor growth by intratumoral injection. These results provided a promising therapeutic strategy for CAR-negative bladder cancer through targeting CICs.
journal_name
Cell Death Disjournal_title
Cell death & diseaseauthors
Yang Y,Xu H,Shen J,Yang Y,Wu S,Xiao J,Xu Y,Liu XY,Chu Ldoi
10.1038/cddis.2015.128subject
Has Abstractpub_date
2015-05-14 00:00:00pages
e1760issn
2041-4889pii
cddis2015128journal_volume
6pub_type
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