Cited by 119Cellular transport and secretionAutophagy in Disease and TherapyCalcium signaling and nucleotide metabolism

LAMTOR/Ragulator is a negative regulator of Arl8b- and BORC-dependent late endosomal positioning

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Filipek, Przemyslaw A., de Araujo, Mariana E.G., Vogel, Georg F., De Smet, Cedric H., Eberharter, Daniela, Rebsamen, Manuele, Rudashevskaya, Elena L., Kremser, Leopold +11 more·2017·Journal of Cell Biology

Abstract

Signaling from lysosomes controls cellular clearance and energy metabolism. Lysosomal malfunction has been implicated in several pathologies, including neurodegeneration, cancer, infection, immunodeficiency, and obesity. Interestingly, many functions are dependent on the organelle position. Lysosomal motility requires the integration of extracellular and intracellular signals that converge on a competition between motor proteins that ultimately control lysosomal movement on microtubules. Here, we identify a novel upstream control mechanism of Arl8b-dependent lysosomal movement toward the periphery of the cell. We show that the C-terminal domain of lyspersin, a subunit of BLOC-1–related complex (BORC), is essential and sufficient for BORC-dependent recruitment of Arl8b to lysosomes. In addition, we establish lyspersin as the linker between BORC and late endosomal/lysosomal adaptor and mitogen activated protein kinase and mechanistic target of rapamycin activator (LAMTOR) complexes and show that epidermal growth factor stimulation decreases LAMTOR/BORC association, thereby promoting BORC- and Arl8b-dependent lysosomal centrifugal transport.

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  • BORC has been implicated in regulating lysosome positioning in concert with amino acid signaling through Ragulator-Rag and also lysosome-autophagosome fusion during autophagy.

    “BORC has been implicated in regulating lysosome positioning in concert with amino acid signaling through Ragulator-Rag (Filipek et al., 2017; Pu et al., 2017) and also lysosome-autophagosome fusion during autophagy (Jia et al., 2017)”

    From Signal integration in the (m)TORC1 growth pathway (2018) · cites this paper as Filipek et al., 2017

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Authors
Filipek, P. A., de Araujo, M. E. G., Vogel, G. F., De Smet, C. H., Eberharter, D., Rebsamen, M., Rudashevskaya, E. L., Kremser, L., Yordanov, T., Tschaikner, P., Fürnrohr, B. G., Lechner, S., Dunzendorfer-Matt, T., Scheffzek, K., Bennett, K. L., Superti-Furga, G., Lindner, H. H., Stasyk, T., & Huber, L. A.
Affiliations
  • Innsbruck Medical University (AT)
  • Division of Cell Biology, Biocenter, Innsbruck Medical University, Innsbruck, Austria 1
  • Austrian Academy of Sciences (AT)
  • Universität Innsbruck (AT)
  • CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria 5
Corresponding author
  • Stasyk, Taras
  • Huber, Lukas A.
Venue
Journal of Cell Biology
Published
2017-10-09
Volume
216
Issue
12
Pages
4199-4215
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2763953806
Cited by
119
References
78
Citations by year
2026: 6 · 2025: 8 · 2024: 7 · 2023: 18 · 2022: 14 · 2021: 16 · 2020: 18 · 2019: 20 · 2018: 11 · 2017: 1
FWCI
7.30
Type
journal article
Language
en
Open access
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • Austrian Science Fund
  • Innsbruck Medical University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
Arl8b, EGF signaling, microtubule motor proteins, lysosomal signaling
MeSH terms
Carrier Proteins, Epidermal Growth Factor, Gene Expression Regulation, HeLa Cells, Humans, Lysosomes, Microtubules, Movement, Nerve Tissue Proteins, Endosomes, Signal Transduction, Protein Isoforms, ADP-Ribosylation Factors, Protein Transport, Multiprotein Complexes, Intracellular Signaling Peptides and Proteins, HEK293 Cells

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