RT Journal Article
T1 Sequence-dependent trafficking and activity of GDE2, a GPI-specific phospholipase promoting neuronal differentiation.
A1 Salgado-Polo, Fernando
A1 van Veen, Michiel
A1 van den Broek, Bram
A1 Jalink, Kees
A1 Leyton-Puig, Daniela
A1 Perrakis, Anastassis
A1 Moolenaar, Wouter H
A1 Matas-Rico, Elisa
K1 Proteínas
K1 Neuroblastoma
K1 Sistema nervioso - Degeneración
AB GDE2 (also known as GDPD5) is a multispanning membrane phosphodiesterase with phospholipase D-like activity that cleaves select glycosylphosphatidylinositol (GPI)-anchored proteins and thereby promotes neuronal differentiation both in vitro and in vivo GDE2 is a prognostic marker in neuroblastoma, while loss of GDE2 leads to progressive neurodegeneration in mice; however, its regulation remains unclear. Here, we report that, in immature neuronal cells, GDE2 undergoes constitutive endocytosis and travels back along both fast and slow recycling routes. GDE2 trafficking is directed by C-terminal tail sequences that determine the ability of GDE2 to cleave GPI-anchored glypican-6 (GPC6) and induce a neuronal differentiation program. Specifically, we define a GDE2 truncation mutant that shows aberrant recycling and is dysfunctional, whereas a consecutive deletion results in cell-surface retention and gain of GDE2 function, thus uncovering distinctive regulatory sequences. Moreover, we identify a C-terminal leucine residue in a unique motif that is essential for GDE2 internalization. These findings establish a mechanistic link between GDE2 neuronal function and sequence-dependent trafficking, a crucial process gone awry in neurodegenerative diseases.This article has an associated First Person interview with the first author of the paper.
PB The Company of Biologist
YR 2020
FD 2020-02-10
LK https://hdl.handle.net/10630/33656
UL https://hdl.handle.net/10630/33656
LA eng
NO Salgado-Polo, F., van Veen, M., van den Broek, B., Jalink, K., Leyton-Puig, D., Perrakis, A., Moolenaar, W. H., & Matas-Rico, E. (2020). Sequence-dependent trafficking and activity of GDE2, a GPI-specific phospholipase promoting neuronal differentiation. Journal of Cell Science, 133(3). https://doi.org/10.1242/jcs.235044
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026