Cited by 104PARP inhibition in cancer therapyDNA Repair MechanismsUbiquitin and proteasome pathways

The deubiquitylating enzyme USP15 regulates homologous recombination repair and cancer cell response to PARP inhibitors

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Peng, Yihan, Liao, Qingchao, Tan, Wei, Peng, Changmin, Hu, Zhaohua, Chen, Yali, Li, Zhuqing, Li, Jing +9 more·2019·Nature Communications

Abstract

Poly-(ADP-ribose) polymerase inhibitors (PARPi) selectively kill breast and ovarian cancers with defects in homologous recombination (HR) caused by BRCA1/2 mutations. There is also clinical evidence for the utility of PARPi in breast and ovarian cancers without BRCA mutations, but the underlying mechanism is not clear. Here, we report that the deubiquitylating enzyme USP15 affects cancer cell response to PARPi by regulating HR. Mechanistically, USP15 is recruited to DNA double-strand breaks (DSBs) by MDC1, which requires the FHA domain of MDC1 and phosphorylated Ser678 of USP15. Subsequently, USP15 deubiquitinates BARD1 BRCT domain, and promotes BARD1-HP1γ interaction, resulting in BRCA1/BARD1 retention at DSBs. USP15 knockout mice exhibit genomic instability in vivo. Furthermore, cancer-associated USP15 mutations, with decreased USP15-BARD1 interaction, increases PARP inhibitor sensitivity in cancer cells. Thus, our results identify a novel regulator of HR, which is a potential biomarker for therapeutic treatment using PARP inhibitors in cancers.

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Crossref · 10.1038/s41467-019-09232-8

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  • USP15 shows dual effects in tumorigenesis; USP15 copy number is increased in glioblastoma, breast cancer, and ovarian cancer, but decreased in pancreatic cancer.

    “Due to the conflicting functions of substrates, USP15 shows dual effects in tumorigenesis. For instance, USP15 copy number is increased in glioblastoma, breast cancer, and ovarian cancer, but decreased in pancreatic cancer40,52,55–58.”

    From Proteostatic reactivation of the developmental transcription factor TBX3 drives BRAF/MAPK-mediated tumorigenesis (2024) · cites this paper as [56]

    The Results section reports deep depletion of USP15 copy number in pancreatic cancer patients, supporting that part of the claim. It also reports USP15 gene depletion in a subset of breast cancer patients; our copy does not establish increased copy number in breast or ovarian cancer or glioblastoma, or the claimed dual effects in tumorigenesis. Page numbers were not available in the indexed passages. (LLM, conf=0.85)

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Authors
Peng, Y., Liao, Q., Tan, W., Peng, C., Hu, Z., Chen, Y., Li, Z., Li, J., Zhen, B., Zhu, W., Li, X., Yao, Y., Song, Q., Liu, C., Qi, X., He, F., & Pei, H.
Affiliations
  • George Washington University (US)
  • Tianjin University of Science and Technology (CN)
  • Beijing Proteome Research Center (CN)
  • Renmin Hospital of Wuhan University (CN)
Corresponding author
  • Qi, Xiangdong
  • He, Fuchu
  • Pei, Huadong
Venue
Nature Communications
Published
2019-03-15
Volume
10
Issue
1
Pages
1224-1224
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2920931417
Cited by
104
References
69
Citations by year
2026: 11 · 2025: 21 · 2024: 17 · 2023: 15 · 2022: 13 · 2021: 10 · 2020: 11 · 2019: 6
FWCI
4.18
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (31571463, 2015CB910601, 31371433, 81572740)
  • National Key Research and Development Program of China (2015CB910601, 2018YFC0910303)
  • National Cancer Institute (R01CA184717, R01CA177898)
Topics
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
USP15, deubiquitinase, homologous recombination repair, PARP inhibitors, BARD1, BRCA1, MDC1, DNA double-strand breaks, deubiquitination, genomic instability, breast cancer, ovarian cancer, biomarkers
MeSH terms
Poly(ADP-ribose) Polymerase Inhibitors, Animals, Humans, Mice, Inbred C57BL, Mutation, Neoplasms, Neoplasms, Experimental, Nuclear Proteins, Whole-Body Irradiation, Trans-Activators, Treatment Outcome, Mice, Knockout, Cell Cycle Proteins, Drug Resistance, Neoplasm, Tumor Suppressor Proteins, RNA, Small Interfering, Ubiquitin-Protein Ligases, Intracellular Signaling Peptides and Proteins, Adaptor Proteins, Signal Transducing, Mice, Kaplan-Meier Estimate, DNA Breaks, Double-Stranded, HEK293 Cells, Recombinational DNA Repair, MCF-7 Cells, Ubiquitin-Specific Proteases

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