Oncogene. 1999 Aug 5;18(31):4409-15.

PED/PEA-15: an anti-apoptotic molecule that regulates FAS/TNFR1-induced apoptosis.External

Condorelli, G., Vigliotta, G., Cafieri, A., Trencia, A., Andalo, P., Oriente, F., Miele, C., Caruso, M., Formisano, P., Beguinot, F.,
--- - Dipartimento di Biologia e Patologia Cellulare e Molecolare L. Califano, Federico II University of Naples Medical School, Italy.
PED/PEA-15 is a recently cloned 15 kDa protein possessing a death effector domain (DED). In MCF-7 and HeLa cells, a fivefold overexpression of PED/PEA-15 blocked FasL and TNFalpha apoptotic effects. This effect of PED overexpression was blocked by inhibition of PKC activity. In MCF-7 and HeLa cell lysates, PED/PEA-15 co-precipitated with both FADD and FLICE. PED/PEA-15-FLICE association was inhibited by overexpression of the wild-type but not of a DED-deletion mutant of FADD. Simultaneous overexpression of PED/PEA-15 with FADD and FLICE inhibited FADD-FLICE co-precipitation by threefold. Based on cleavage of the FLICE substrate PARP, this inhibitory effect was paralleled by a threefold decline in FLICE activation in response to TNF-alpha. TNFalpha, in turn, reduces PED association with the endogenous FADD and FLICE of the cells. Thus, PED/PEA-15 is an endogenous protein inhibiting FAS and TNFR1-mediated apoptosis. At least in part, this function may involve displacement of FADD-FLICE binding through the death effector domain of PED/PEA-15.
PMID: 10442631External
Arrow2 In vitro interaction Arrow2 In vivo interaction Arrow2 Characterization Arrow2 Functional role Arrow2 top
In vivo interaction
  Endogenous
expression
Overexpression DD1 DD2 Reference
Family DD1 DD2 Method Species Region Species Region
DED Caspase8 Link PEA15 Co-immunoprecipitation HeLa Human Not specified Human Full length 10442631
DED FADD Link PEA15 Co-immunoprecipitation HeLa Human 1-208 Human Full length 10442631
(Link: click this icon to show interactions only between the two corresponding DDs)
Arrow2 In vitro interaction Arrow2 In vivo interaction Arrow2 Characterization Arrow2 Functional role Arrow2 top
Functional Role
Family DD1 DD2 Method Death-related Death-unrelated Reference
DED Caspase8 Link PEA15 PARP cleaved assay Apoptosis inhibition 10442631
(Link: click this icon to show interactions only between the two corresponding DDs)