Clinical Developments of the Tumor Suppressor p53

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Molecular and Translational Medicine".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 1740

Special Issue Editor


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Guest Editor
Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
Interests: TP53; p53 reactivation; targeted therapeutics; Li–Fraumeni syndrome; MDM2/4

Special Issue Information

Dear Colleagues,

This Special Issue, "Clinical Developments of the Tumor Suppressor p53", will mainly focus on the most promising advancements in clinical research on how p53 and its mutations impact patients in the clinic and on the novel drugs currently advancing to clinical trials to treat this once “undruggable” target.

TP53 (p53) is the most frequently mutated gene in cancer, being altered in approximately 50% of human malignancies. In most, if not all, cancers lacking mutations, wild-type (WT) p53 is inactivated through interaction with cellular (MDM2/MDM4) or viral proteins, leading to its degradation. Because of its near universal alteration in cancer, p53 is an attractive target for the development of new targeted therapies for this disease.

We invite authors to submit original research and review articles that focus on the biological functions and therapeutic potential of the p53 pathway. Potential topics include, but are not limited to, the following:

  • P53 targeted therapies;
  • MDM2/4 targeted therapies;
  • Role of p53 in drug resistance;
  • Role of p53 in secondary cancers;
  • Therapeutic options for Li–Fraumeni syndrome.

Dr. Naoise C. Synnott
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • mutant p53
  • TP53
  • treatment
  • targeting
  • cancer
  • MDM2
  • MDM4
  • LFS

Published Papers (1 paper)

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Research

14 pages, 3601 KiB  
Article
The Novel MDM4 Inhibitor CEP-1347 Activates the p53 Pathway and Blocks Malignant Meningioma Growth In Vitro and In Vivo
by Yuta Mitobe, Shuhei Suzuki, Yurika Nakagawa-Saito, Keita Togashi, Asuka Sugai, Yukihiko Sonoda, Chifumi Kitanaka and Masashi Okada
Biomedicines 2023, 11(7), 1967; https://doi.org/10.3390/biomedicines11071967 - 12 Jul 2023
Cited by 2 | Viewed by 1356
Abstract
A significant proportion of meningiomas are clinically aggressive, but there is currently no effective chemotherapy for meningiomas. An increasing number of studies have been conducted to develop targeted therapies, yet none have focused on the p53 pathway as a potential target. In this [...] Read more.
A significant proportion of meningiomas are clinically aggressive, but there is currently no effective chemotherapy for meningiomas. An increasing number of studies have been conducted to develop targeted therapies, yet none have focused on the p53 pathway as a potential target. In this study, we aimed to determine the in vitro and in vivo effects of CEP-1347, a small-molecule inhibitor of MDM4 with known safety in humans. The effects of CEP-1347 and MDM4 knockdown on the p53 pathway in human meningioma cell lines with and without p53 mutation were examined by RT-PCR and Western blot analyses. The growth inhibitory effects of CEP-1347 were examined in vitro and in a mouse xenograft model of meningioma. In vitro, CEP-1347 at clinically relevant concentrations inhibited MDM4 expression, activated the p53 pathway in malignant meningioma cells with wild-type p53, and exhibited preferential growth inhibitory effects on cells expressing wild-type p53, which was mostly mimicked by MDM4 knockdown. CEP-1347 effectively inhibited the growth of malignant meningioma xenografts at a dose that was far lower than the maximum dose that could be safely given to humans. Our findings suggest targeting the p53 pathway with CEP-1347 represents a novel and viable approach to treating aggressive meningiomas. Full article
(This article belongs to the Special Issue Clinical Developments of the Tumor Suppressor p53)
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