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MUDENG is cleaved by caspase-3 during TRAIL-induced cell death
- Authors
- Shin, Jin Na; Han, Ji Hye; Kim, Ji-Young; Moon, Ae-Ran; Kim, Ji Eun; Chang, Jeong Hwan; Bae, Jeehyeon; Oh, Jae Wook; Kim, Tae-Hyoung
- Issue Date
- May-2013
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Keywords
- MUDENG; Caspase-3; TRAIL; Apoptosis
- Citation
- BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, v.435, no.2, pp 234 - 238
- Pages
- 5
- Journal Title
- BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
- Volume
- 435
- Number
- 2
- Start Page
- 234
- End Page
- 238
- ISSN
- 0006-291X
1090-2104
- Abstract
- MUDENG, also known as AP5M1, was originally identified as an adaptin domain-containing gene that induced cell death in lymphoma cell lines. However, little is known of the mechanism responsible for MUDENG-mediated cell death. In this study, we investigated MUDENG changes during TRAIL-induced cell death. We found that MUDENG is rapidly processed in response to TRAIL in jurkat and BJAB cells with time line similar to that of caspase activation. Caspase-3-mediated MUDENG cleavage was confirmed by an in vitro cleavage assay using recombinant active caspase proteins. Caspase cleavage sites (D276 and D290) were located in the adaptin domain of MUDENG, and cleaved MUDENG showed the reduced killing activity. These results suggest that the adaptin domain plays a key role in MUDENG-mediated cell death. (C) 2013 Elsevier Inc. All rights reserved.
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