Cited by 65Microtubule and mitosis dynamicsUbiquitin and proteasome pathwaysCancer-related Molecular Pathways

USP7 and Daxx regulate mitosis progression and taxane sensitivity by affecting stability of Aurora-A kinase.

Open access
Giovinazzi, S, Morozov, V M, Summers, M K, Reinhold, W C, Ishov, A M·2013·Cell Death & Differentiation

Abstract

A large number of patients are resistant to taxane-based chemotherapy. Functional mitotic checkpoints are essential for taxane sensitivity. Thus, mitotic regulators are potential markers for therapy response and could be targeted for anticancer therapy. In this study, we identified a novel function of ubiquitin (Ub)-specific processing protease-7 (USP7) that interacts and cooperates with protein death domain-associated protein (Daxx) in the regulation of mitosis and taxane resistance. Depletion of USP7 impairs mitotic progression, stabilizes cyclin B and reduces stability of the mitotic E3 Ub ligase, checkpoint with forkhead and Ring-finger (CHFR). Consequently, cells with depleted USP7 accumulate Aurora-A kinase, a CHFR substrate, thus elevating multipolar mitoses. We further show that these effects are independent of the USP7 substrate p53. Thus, USP7 and Daxx are necessary to regulate proper execution of mitosis, partially via regulation of CHFR and Aurora-A kinase stability. Results from colony formation assay, in silico analysis across the NCI60 platform and in breast cancer patients suggest that USP7 levels inversely correlate with response to taxanes, pointing at the USP7 protein as a potential predictive factor for taxane response in cancer patients. In addition, we demonstrated that inhibition of Aurora-A attenuates USP7-mediated taxane resistance, suggesting that combinatorial drug regimens of Taxol and Aurora-A inhibitors may improve the outcome of chemotherapy response in cancer patients resistant to taxane treatment. Finally, our study offers novel insights on USP7 inhibition as cancer therapy.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/cdd.2012.169

Cites

60 of 60 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Similar chromosomal abnormalities were detected in both p53 positive and null cell lines following USP7 depletion, suggesting this phenotype might be caused by means other than p53 deregulation.

    “Although p53 status was not a reported parameter in these analyses, similar chromosomal abnormalities were detected in both p53 positive and null cell lines following USP7 depletion, suggesting this phenotype might be caused by means other than p53 deregulation (Giovinazzi et al., 2013, 2014).”

    From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Giovinazzi et al., 2013

  • Another proposed use for USP7 inhibitors is in sensitizing taxane-resistant tumors to taxane therapies.

    “Another proposed use for USP7 inhibitors is in sensitizing taxane-resistant tumors to taxane therapies (Giovinazzi et al., 2013; Zhang et al., 2016; Peng et al., 2019).”

    From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Giovinazzi et al., 2013

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Giovinazzi, S., Morozov, V. M., Summers, M. K., Reinhold, W. C., & Ishov, A. M.
Affiliations
  • University of Florida (US)
  • University of Florida Health (US)
  • Cleveland Clinic Research (US)
  • National Institutes of Health (US)
Corresponding author
Ishov, A M
Venue
Cell Death & Differentiation
Published
2013-01-25
Volume
20
Issue
5
Pages
721-731
ISSN
  • 1350-9047 (ISSN-L)
  • 1476-5403
OpenAlex
W2082231793
Cited by
65
References
60
Citations by year
2026: 1 · 2025: 7 · 2024: 4 · 2023: 5 · 2022: 9 · 2021: 10 · 2020: 6 · 2019: 5 · 2018: 5 · 2017: 1 · 2016: 6 · 2015: 3 · 2014: 2 · 2013: 1
FWCI
2.32
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Differentiation (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Cleveland Clinic
  • National Institutes of Health (/ NCI R01)
  • National Cancer Institute (T32CA009151, HCT116, R01CA127378)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
USP7, DAXX, AURKA, taxane resistance, CHFR, cyclin B, protein stability, multipolar mitosis, spindle assembly checkpoint, p53-independent regulation, predictive biomarkers, breast cancer, Aurora A inhibitor, chemotherapy response
MeSH terms
Poly-ADP-Ribose Binding Proteins, Ubiquitin-Specific Peptidase 7, Antineoplastic Agents, Benzazepines, Breast Neoplasms, Bridged-Ring Compounds, Female, Humans, Mitosis, Neoplasm Proteins, Nuclear Proteins, Tumor Suppressor Protein p53, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Molecular Chaperones, Drug Resistance, Neoplasm, Cyclin B, RNA Interference, RNA, Small Interfering, Ubiquitin Thiolesterase, Taxoids, Ubiquitin-Protein Ligases, Cell Line, Tumor, Adaptor Proteins, Signal Transducing, Co-Repressor Proteins, Aurora Kinases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review