CD147 overexpression is a prognostic factor and a potential therapeutic target in bladder cancer.
CD147, also named extracellular matrix metalloproteinase inducer (EMMPRIN), has been shown to be involved in the progression of malignancy by regulating expression of vascular endothelial growth factor (VEGF) and matrix metalloproteinases (MMPs). The goal of this study was to evaluate the role of CD147 in the biology of bladder cancer and to determine its potential as a therapeutic target. CD147 protein expression was detected by immunohistochemistry in 108 bladder cancers using a tissue microarray annotated with patient follow-up. In immunohistochemistry, CD147 protein expression was associated with poor prognosis (P<0.001), lymph node status (P<0.001), tumor stage (P=0.003), histologic grade (P=0.011). Multivariate analysis showed that CD147 overexpression was an independent prognostic factor (P=0.019). Infection of T24 bladder cancer cells with an adenovirus that expressed a small interfering RNA (siRNA) against CD147 efficiently inhibited CD147 protein and mRNA expression. This resulted in decreased proliferation, soft agar colony formation, migration, and invasion of T24 cells in vitro. Moreover, downregulation of CD147 reduced secretion of MMP-2 and MMP-9 and expression of VEGF in these cells. Our findings suggest that CD147 overexpression plays an important role in progression of bladder cancer, and CD147 could be a potential target of bladder cancer therapy.
Department of Urology, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, 110001, Shenyang City, Liaoning, China.
Yi-Jun
YJ
Xue
Qiang
Q
Lu
Zhi-Xi
ZX
Sun
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D051926:Basigin / Q000096:biosynthesis*; D014408:Biomarkers, Tumor / Q000032:analysis*; D015153:Blotting, Western; D002295:Carcinoma, Transitional Cell / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D055785:Gene Knockdown Techniques; D006801:Humans; D007150:Immunohistochemistry; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D060787:Neoplasm Grading; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D034741:RNA, Small Interfering; D020133:Reverse Transcriptase Polymerase Chain Reaction; D046888:Tissue Array Analysis; D001749:Urinary Bladder Neoplasms / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D042461:Vascular Endothelial Growth Factor A / Q000096:biosynthesis
C497886:BSG protein, human; D014408:Biomarkers, Tumor; D034741:RNA, Small Interfering; D042461:Vascular Endothelial Growth Factor A; D051926:Basigin