Evidence map›Paper›PMID 18305219›Full record

ArticleBlood2008

Targeting the p27 E3 ligase SCF(Skp2) results in p27- and Skp2-mediated cell-cycle arrest and activation of autophagy.

Qing Chen, Weilin Xie, Deborah J Kuhn, Peter M Voorhees, Antonia Lopez-Girona, Derek Mendy, Laura G Corral, Veronique Plantevin Krenitsky, Weiming Xu, Laure Moutouh-de Parseval and 5 more

Open access · greenAbstract read
In one paragraph

Article in Blood, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 153 papers.

0numbers the graph read from it
0cells of the map it votes in
153citing papers in PubMed
5.5field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

153 citing papers in PubMed, 265 citations in OpenAlex.

  1. Review
  2. Review
  3. The potential role of hydrogen sulfide-autophagy axis in diseases.Journal of physiology and biochemistry · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. The cross talk of ubiquitination and chemotherapy tolerance in colorectal cancer.Journal of cancer research and clinical oncology · 2024
    Review
  12. Review
  13. Article
  14. Review
  15. Review
  16. Review
  17. Functional roles of E3 ubiquitin ligases in prostate cancer.Journal of molecular medicine (Berlin, Germany) · 2022
    Review
  18. Review
  19. Article
  20. The roles of E3 ligases in Hepatocellular carcinoma.American journal of cancer research · 2022
    Review

93 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors at 3 institutions in 2 countries.

Qing ChenLineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, USA.
Weilin Xie
Deborah J Kuhn
Peter M Voorhees
Antonia Lopez-Girona
Derek Mendy
Laura G Corral
Veronique Plantevin Krenitsky
Weiming Xu
Laure Moutouh-de Parseval
David R Webb
Frank Mercurio
Keiichi I Nakayama
Keiko Nakayama
Robert Z Orlowski
University of North Carolina at Chapel Hill · USKyushu University · JPTohoku University · JP

Funding

Dual Proteasome and MAPK Inhibition in Cancer TherapyR01CA102278 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI ORLOWSKI, ROBERT ZYGMUNT · 2004 to 2008
$1.2M
NCI NIH HHS R01 CA102278
6 · The paper itself

Abstract

Decreased p27(Kip1) levels are a poor prognostic factor in many malignancies, and can occur through up-regulation of SCF(Skp2) E3 ligase function, resulting in enhanced p27 ubiquitination and proteasome-mediated degradation. While proteasome inhibitors stabilize p27(Kip1), agents inhibiting SCF(Skp2) may represent more directly targeted drugs with the promise of enhanced efficacy and reduced toxicity. Using high-throughput screening, we identified Compound A (CpdA), which interfered with SCF(Skp2) ligase function in vitro, and induced specific accumulation of p21 and other SCF(Skp2) substrates in cells without activating a heat-shock protein response. CpdA prevented incorporation of Skp2 into the SCF(Skp2) ligase, and induced G(1)/S cell-cycle arrest as well as SCF(Skp2)- and p27-dependent cell killing. This programmed cell death was caspase-independent, and instead occurred through activation of autophagy. In models of multiple myeloma, CpdA overcame resistance to dexamethasone, doxorubicin, and melphalan, as well as to bortezomib, and also acted synergistically with this proteasome inhibitor. Importantly, CpdA was active against patient-derived plasma cells and both myeloid and lymphoblastoid leukemia blasts, and showed preferential activity against neoplastic cells while relatively sparing other marrow components. These findings provide a rational framework for further development of SCF(Skp2) inhibitors as a novel class of antitumor agents.

Indexed as

AutophagyCell CycleAntineoplastic AgentsCell Line, TumorCyclin-Dependent Kinase Inhibitor p27Drug Delivery SystemsDrug Resistance, NeoplasmHumansMultiple MyelomaS-Phase Kinase-Associated ProteinsUbiquitin-Protein LigasesAntineoplastic AgentsCyclin-Dependent Kinase Inhibitor p27S-Phase Kinase-Associated ProteinsUbiquitin-Protein Ligases

Identifiers

PMID18305219
PMCPMC2343599
OpenAlexW1963617699

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.