Following the TRAIL to apoptosis

被引:50
作者
Chaudhari, Bharti R. [1 ]
Murphy, Richard F. [1 ]
Agrawal, Devendra K. [1 ]
机构
[1] Creighton Univ, Sch Med, Dept Biomed Sci, Omaha, NE 68178 USA
关键词
airway remodeling; apoptosis; asthma; regulators of TRAIL TGF-beta 1; TRAIL; TRAIL receptors;
D O I
10.1385/IR:35:3:249
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Apoptosis, programmed cell death, eliminates injured or harmful cells. It can mediate its response through the actions of death ligands including TRAIL. TRAIL, a member of TNF superfamily, induces apoptosis of transformed cells through the action of death domain receptors DR-4 and DR5. It directly induces apoptosis through an extrinsic pathway, which involves the activation of caspases. TRAIL also is able to prevent apoptosis through the actions of its decoy receptors DcR-1 and DcR-2. Various regulators of TRAIL include FADD, IAPs, Bcl-2s, p53, and FLIPs. TRAIL is present in cells involved in asthma including eosinophils, mast cells, fibroblasts, and airway epithelial cells. It is expressed in airway remodeling and may be linked with the pathways of transforming growth factor-beta1, which is thought to cause damage to the epithelium. The repair process of the epithelium is hindered as a result of increased apoptosis induced by TGF-beta 1, which overlaps with the pathways of TRAIL. Analogs of TRAIL could have therapeutical applications for asthma. TRAIL is also seen as the basis for a "miracle" drug for cancer because of its ability to selectively kill cancer cells.
引用
收藏
页码:249 / 262
页数:14
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