Cited by 341Cellular transport and secretionCalcium signaling and nucleotide metabolismProtein Kinase Regulation and GTPase Signaling

The novel lipid raft adaptor p18 controls endosome dynamics by anchoring the MEK–ERK pathway to late endosomes

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Nada, Shigeyki, Hondo, Akihiro, Kasai, Atsuko, Koike, Masato, Saito, Kazunobu, Uchiyama, Yasuo, Okada, Masato·2009·The EMBO Journal

Abstract

The regulation of endosome dynamics is crucial for fundamental cellular functions, such as nutrient intake/digestion, membrane protein cycling, cell migration and intracellular signalling. Here, we show that a novel lipid raft adaptor protein, p18, is involved in controlling endosome dynamics by anchoring the MEK1-ERK pathway to late endosomes. p18 is anchored to lipid rafts of late endosomes through its N-terminal unique region. p18(-/-) mice are embryonic lethal and have severe defects in endosome/lysosome organization and membrane protein transport in the visceral endoderm. p18(-/-) cells exhibit apparent defects in endosome dynamics through perinuclear compartment, such as aberrant distribution and/or processing of lysosomes and impaired cycling of Rab11-positive recycling endosomes. p18 specifically binds to the p14-MP1 complex, a scaffold for MEK1. Loss of p18 function excludes the p14-MP1 complex from late endosomes, resulting in a downregulation of the MEK-ERK activity. These results indicate that the lipid raft adaptor p18 is essential for anchoring the MEK-ERK pathway to late endosomes, and shed new light on a role of endosomal MEK-ERK pathway in controlling endosome dynamics.

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Crossref · 10.1038/emboj.2008.308

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  • p18 is the key determinant of lysosome localization by virtue of lipid modifications within its N-terminal region.

    “The protein p18 was shown to be the key determinant of lysosome localization by virtue of lipid modifications within its N-terminal region (Bar-Peled et al., 2012; Nada et al., 2009).”

    From Signal integration in the (m)TORC1 growth pathway (2018) · cites this paper as Nada et al., 2009

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Authors
Nada, S., Hondo, A., Kasai, A., Koike, M., Saito, K., Uchiyama, Y., & Okada, M.
Affiliations
  • Research Institute for Microbial Diseases, The University of Osaka (JP)
  • Juntendo University (JP)
Corresponding author
Okada, Masato
Venue
The EMBO Journal
Published
2009-01-29
Volume
28
Issue
5
Pages
477-489
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2084712051
Cited by
341
References
63
Citations by year
2026: 13 · 2025: 8 · 2024: 9 · 2023: 20 · 2022: 20 · 2021: 22 · 2020: 26 · 2019: 20 · 2018: 24 · 2017: 23 · 2016: 20 · 2015: 22 · 2014: 16 · 2013: 21 · 2012: 35
FWCI
11.42
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Yasuda Memorial Medical Foundation
  • Research Institute for Microbial Diseases, Osaka University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
p18, lipid rafts, late endosomes, MEK/ERK signaling, MEK1, recycling endosomes, membrane protein transport, visceral endoderm, embryonic lethality, Rab11
MeSH terms
Amino Acid Sequence, Animals, Cells, Cultured, Endocytosis, Endoderm, Epidermal Growth Factor, Lysosomes, Molecular Sequence Data, Protein Binding, Proteins, Endosomes, Signal Transduction, Mice, Knockout, Membrane Microdomains, Extracellular Signal-Regulated MAP Kinases, MAP Kinase Kinase 1, Adaptor Proteins, Signal Transducing, Mice

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