Cited by 37Cancer-related Molecular PathwaysSalivary Gland Tumors Diagnosis and TreatmentCancer Mechanisms and Therapy

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

Therapeutic inhibition of the MDM2-p53 interaction prevents recurrence of adenoid cystic carcinomas

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Nör, Felipe, Warner, Kristy A., Zhang, Zhaocheng, Acasigua, Gerson A., Pearson, Alexander T., Kerk, Samuel A., Helman, Joseph I., Sant'Ana Filho, Manoel, Wang, Shaomeng, Nör, Jacques E.·2017·Clinical Cancer Research

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Abstract

Purpose: Conventional chemotherapy has modest efficacy in advanced adenoid cystic carcinomas (ACC). Tumor recurrence is a major challenge in the management of ACC patients. Here, we evaluated the antitumor effect of a novel small-molecule inhibitor of the MDM2–p53 interaction (MI-773) combined with cisplatin in patient-derived xenograft (PDX) ACC tumors. Experimental Design: Therapeutic strategies with MI-773 and/or cisplatin were evaluated in SCID mice harboring PDX ACC tumors (UM-PDX-HACC-5) and in low passage primary human ACC cells (UM-HACC-2A, -2B, -5, -6) in vitro. The effect of therapy on the fraction of cancer stem cells (CSC) was determined by flow cytometry for ALDH activity and CD44 expression. Results: Combined therapy with MI-773 with cisplatin caused p53 activation, induction of apoptosis, and regression of ACC PDX tumors. Western blots revealed induction of MDM2, p53 and downstream p21 expression, and regulation of apoptosis-related proteins PUMA, BAX, Bcl-2, Bcl-xL, and active caspase-9 upon MI-773 treatment. Both single-agent MI-773 and MI-773 combined with cisplatin decreased the fraction of CSCs in PDX ACC tumors. Notably, neoadjuvant MI-773 and surgery eliminated tumor recurrences during a postsurgical follow-up of more than 300 days. In contrast, 62.5% of mice that received vehicle control presented with palpable tumor recurrences within this time period (P = 0.0097). Conclusions: Collectively, these data demonstrate that therapeutic inhibition of MDM2–p53 interaction by MI-773 decreased the CSC fraction, sensitized ACC xenograft tumors to cisplatin, and eliminated tumor recurrence. These results suggest that patients with ACC might benefit from the therapeutic inhibition of the MDM2–p53 interaction. Clin Cancer Res; 23(4); 1036–48. ©2016 AACR.

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Authors
Nör, F., Warner, K. A., Zhang, Z., Acasigua, G. A., Pearson, A. T., Kerk, S. A., Helman, J. I., Sant'Ana Filho, M., Wang, S., & Nör, J. E.
Affiliations
  • Universidade Federal do Rio Grande do Sul (BR)
  • University of Michigan (US)
  • 2Department of Oral Pathology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
  • 1Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan.
Venue
Clinical Cancer Research
Published
2017-02-14
Volume
23
Issue
4
Pages
1036-1048
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2512554954
Cited by
37
References
38
Citations by year
2026: 1 · 2025: 4 · 2024: 5 · 2023: 3 · 2022: 6 · 2021: 4 · 2020: 4 · 2019: 2 · 2018: 4 · 2017: 4
FWCI
1.80
Type
journal article
Language
en
Open access
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5k08de026500-05)
  • National Cancer Institute (P50CA097248)
  • National Institute of Dental and Craniofacial Research (R01DE023220, K08-DE026500, R21DE019279, R01DE021139)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Health Sciences › Medicine › Surgery › Salivary Gland Tumors Diagnosis and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Mechanisms and Therapy
Keywords
adenoid cystic carcinoma, p53-MDM2 interaction, cisplatin, combination therapy, tumor recurrence, cancer stem cells, patient-derived xenografts, apoptosis, p21, neoadjuvant therapy, ALDH activity, CD44
MeSH terms
Animals, Cisplatin, Carcinoma, Adenoid Cystic, Female, Humans, Male, Neoplasm Proteins, Neoplasm Recurrence, Local, Spiro Compounds, Tumor Suppressor Protein p53, Apoptosis, Xenograft Model Antitumor Assays, Cell Line, Tumor, Cell Proliferation, Mice, Proto-Oncogene Proteins c-mdm2, Protein Interaction Maps

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