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KMID : 0613820110210111641
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Journal of Life Science
2011 Volume.21 No. 11 p.1641 ~ p.1651
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Multiple Molecular Targets of Sensitizers in Tumor Necrosis Factor (TNF)-Related Apoptosis-Inducing Ligand (TRAIL/Apo2L)-Mediated Apoptosis
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Min Kyoung-Jin
Kwon Taeg-Kyu
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Abstract
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Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL/Apo2L) is a recently identified member of the TNF ligand family that can initiate apoptosis through the activation of their death receptors. TRAIL has been paid attention as a potential anti-cancer drug, because it selectively induces apoptosis in tumor cells in vitro and in vivo but not in most normal cells. However, recent studies have shown that some cancer cells including malignant renal cell carcinoma and hepatocellular carcinoma, are resistant to the apoptotic effects of TRAIL. Therefore, single treatment with TRAIL may not be sufficient for the treatment of various malignant tumor cells. Understanding the molecular mechanisms of TRAIL resistance and identification of sensitizers capable of overcoming TRAIL resistance in cancer cells is needed for the establishment of more effective TRAIL-based cancer therapies. Chemotherapeutic drugs induce apoptosis and the upregulation of death receptors or activation of intracellular signaling pathways of TRAIL. Numerous chemotherapeutic drugs have been shown to sensitize tumor cells to TRAIL-mediated apoptosis. In this study, we summarize biological agents and drugs that sensitize tumors to TRAIL-mediated apoptosis and discuss the potential molecular basis for their sensitization.
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KEYWORD
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TRAIL, death receptor, sensitization, cancer therapy
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