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An eIF4E-interacting peptide induces cell death in cancer cell lines.


ABSTRACT: The eukaryotic initiation factor eIF4E is essential for cap-dependent initiation of translation in eukaryotes. Abnormal regulation of eIF4E has been implicated in oncogenic transformation. We developed an eIF4E-binding peptide derived from Angel1, a partner of eIF4E that we recently identified. We show here that this peptide fused to a penetratin motif causes drastic and rapid cell death in several epithelial cancer cell lines. This necrotic cell death was characterized by a drop in ATP levels with F-actin network injury being a key step in extensive plasma membrane blebbing and membrane permeabilization. This synthetic eIF4E-binding peptide provides a candidate pharmacophore for a promising new cancer therapy strategy.

SUBMITTER: Masse M 

PROVIDER: S-EPMC4237268 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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An eIF4E-interacting peptide induces cell death in cancer cell lines.

Masse M M   Glippa V V   Saad H H   Le Bloas R R   Gauffeny I I   Berthou C C   Czjzek M M   Cormier P P   Cosson B B  

Cell death & disease 20141030


The eukaryotic initiation factor eIF4E is essential for cap-dependent initiation of translation in eukaryotes. Abnormal regulation of eIF4E has been implicated in oncogenic transformation. We developed an eIF4E-binding peptide derived from Angel1, a partner of eIF4E that we recently identified. We show here that this peptide fused to a penetratin motif causes drastic and rapid cell death in several epithelial cancer cell lines. This necrotic cell death was characterized by a drop in ATP levels w  ...[more]

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