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The Role of the Receptor for Advanced Glycation End-Products in Cancer: Evidence from a Systematic Review and
Abstract:
The Receptor for Advanced Glycation End-products (RAGE) has been implicated in driving cancer growth, aggression, and metastasis through the fueling of chronic inflammation in the tumor microenvironment. This systematic review and meta-analysis summarize and analyze current clinical and preclinical data to provide insight into the relationship between RAGE and cancer, cancer grade, metastasis, patient survival, and cellular processes. A multi-database search was performed to identify original clinical and preclinical research studies examining RAGE expression in cancer. After screening and review, 53 clinical and 233 preclinical studies were included. Associations of RAGE with clinical cancer outcomes were estimated using odds ratio (OR) and associated 95% confidence intervals (CI). The meta-analysis found that RAGE expression was highly correlated with cancerous tissue when compared to controls; high-grade tumors; regional lymph node invasion; and was somewhat negatively associated with patient survival. In addition, meta-analysis estimates of preclinical studies found positive associations between RAGE expression/activation and cancer growth, metastatic potential, evasion of apoptosis, and activated NF-κB expression. This systematic review and meta-analysis is the first comprehensive study through which both preclinical and clinical research in all available cancer types are assessed for correlations with RAGE expression and activation, demonstrating that RAGE does indeed play a significant role in cancer progression and that further research is warranted.
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