Cited by 347Ubiquitin and proteasome pathwaysCancer-related Molecular PathwaysProtein Degradation and Inhibitors

Tumor suppression by the Fbw7 ubiquitin ligase: mechanisms and opportunities

Open access
Davis, Ryan J., Welcker, Markus, Clurman, Bruce E.·2014·Cancer Cell

Abstract

Tumor suppressors with widespread impact on carcinogenesis control broad spectra of oncogenic pathways. Protein degradation is an emerging mechanism by which tumor suppressors regulate a diversity of pathways and is exemplified by the SCF(Fbw7) ubiquitin ligase. Rapidly accumulating data indicate that SCF(Fbw7) regulates a network of crucial oncoproteins. Importantly, the FBXW7 gene, which encodes Fbw7, is one of the most frequently mutated genes in human cancers. These studies are yielding important new insights into tumorigenesis and may soon enable therapies targeting the Fbw7 pathway. Here, we focus on the mechanisms and consequences of Fbw7 deregulation in cancers and discuss possible therapeutic approaches.

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Registry

Crossref · 10.1016/j.ccell.2014.09.013

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  • GSK3β drives protein destruction majorly through E3 ubiquitin ligase FBW7.

    “GSK3b drives protein destruction majorly through E3 ubiquitin ligase FBW7 (also called FBXW7, hCDC4, and SEL-10; ref. 14).”

    From FBW7 Inhibits Myeloid Differentiation in Acute Myeloid Leukemia via GSK3-Dependent Ubiquitination of PU.1 (2021) · cites this paper as [14]

    The section “Substrate phosphorylation stimulates Fbw7 binding” (page not supplied) says GSK3 phosphorylates many Fbw7-recognized degrons, linking its activity to Fbw7-mediated degradation. It does not establish that GSK3β drives protein destruction *mainly* through FBW7; it notes that most substrates have multiple turnover pathways. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Fbw7 dimerization increases cyclin E binding: both Fbw7 protomers have one cyclin E binding site, and through dimerization both binding sites become simultaneously accessible to cyclin E, leading to increased affinity of Fbw7-cyclin E interaction.

    “In Fbw7 dimer interface, both Fbw7 protomers have one cyclin E binding site, and through dimerization both binding sites become simultaneously accessible to cyclin E, thus leading to increased affinity of Fbw7 -cyclin E interaction [39].”

    From Oncoprotein CIP2A is stabilized via interaction with tumor suppressor PP2A/B56 (2017) · cites this paper as [39]

    Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • FBW7 is the substrate recognition motif of multimeric E3 ligase SCF-FBW7 which binds to substrates by recognizing phosphorylated motifs via its WD40 repeat regions.

    “F-box protein FBW7 is the substrate recognition motif of multimeric E3 ligase SCF-FBW7 (SKP-cullin-Fbox) which binds to substrates by recognizing phosphorylated motifs (phosphodegron motif) via its WD40 repeat regions (14,15).”
  • FBXW7 recognizes a conserved S/TxxxS/T motif.

    “FBXW7 is known to recognize a conserved S/TxxxS/T motif59,60”

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1 of the 103 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Nateri AS Riera-Sans L Da Costa C Behrens A 2004 The ubiquitin ligase SCFFbw7 antagonizes apoptotic JNK signaling Science 303 1374 1378 14739463

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Authors
Davis, R. J., Welcker, M., & Clurman, B. E.
Affiliations
  • University of Washington (US)
  • Fred Hutch Cancer Center (US)
Corresponding author
Clurman, Bruce E.
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2014-10
Volume
26
Issue
4
Pages
455-464
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2055874017
Cited by
343
References
103
Citations by year
2026: 15 · 2025: 18 · 2024: 14 · 2023: 22 · 2022: 28 · 2021: 36 · 2020: 32 · 2019: 46 · 2018: 31 · 2017: 39 · 2016: 35 · 2015: 24 · 2014: 2
FWCI
3.14
Type
journal article
Language
en
Open access
Locations
  • Cancer Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Foundation
  • National Institutes of Health
  • National Cancer Institute (CA084069, R01CA084069, R01CA178143, CA102742, R01CA102742)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
Keywords
FBXW7, SCF ubiquitin ligase, tumor suppression, protein degradation, FBXW7 mutation, carcinogenesis
MeSH terms
F-Box-WD Repeat-Containing Protein 7, Humans, Mutation, Neoplasms, Genes, Tumor Suppressor, Cell Cycle Proteins, Ubiquitin-Protein Ligases, F-Box Proteins

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