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Rusiecki R, Witkowski J, Jaszczewska-Adamczak J. MDM2-p53 Interaction Inhibitors: The Current State-of-Art and Updated Patent Review (2010-Present). Recent Pat Anticancer Drug Discov 2020; 14:324-369. [DOI: 10.2174/1574892814666191022163540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 10/09/2019] [Accepted: 10/15/2019] [Indexed: 01/10/2023]
Abstract
Background:
Mouse Double Minute 2 protein (MDM2) is a cellular regulator of p53 tumor
suppressor (p53). Inhibition of the interaction between MDM2 and p53 proteins is a promising anticancer
therapy.
Objective:
This updated patent review is an attempt to compile the research and achievements of the
various researchers working on small molecule MDM2 inhibitors from 2010 to date. We provide an
outlook into the future for therapy based on MDM2 inhibition by presenting an overview of the most
relevant patents which have recently appeared in the literature.
Methods:
Literature and recent patents focusing on the anticancer potential of MDM2-p53 interaction
inhibitors and its applications have been analyzed. We put the main emphasis on the most perspective
compounds which are or were examined in clinical trials.
Results:
Literature data indicated that MDM2 inhibitors are therapeutically effective in specific types
of cancer or non-cancer diseases. A great number of patents and research work around new MDM2-
p53 interaction inhibitors, possible combinations, new indications, clinical regimens in previous years
prove that this targeted therapy is in the scope of interest for many business and academic research
groups.
Conclusion:
Novel MDM2 inhibitors thanks to higher potency and better ADME properties have
shown effectiveness in preclinical and clinical development however the final improvement of therapeutic
potential for MDM2 inhibitors might depend on the useful combination therapy and exploring
new cancer and non-cancer indications.
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Affiliation(s)
- Rafał Rusiecki
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw 00-664, Poland
| | - Jakub Witkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, Warsaw 02-093, Poland
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Shi S, Sui K, Liu W, Lei Y, Zhang S, Zhang Q. Revealing binding selectivity of ligands toward murine double minute 2 and murine double minute X based on molecular dynamics simulations and binding free energy calculations. J Biomol Struct Dyn 2019; 38:5081-5094. [PMID: 31755361 DOI: 10.1080/07391102.2019.1695671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
It is well known that the interactions of p53 with murine double minute 2 and murine double minute X, namely MDM2 and MDMX, have been significant targets of efficient anti-cancer drug design. In this study, molecular dynamics (MD) simulations, principal component (PC) analysis and binding free energy calculations are combined to recognize binding selectivity of three ligands to MDM2 and MDMX. The binding free energies were estimated by using molecular mechanics generalized Born surface area (MM-GBSA) method and the obtained results display that the increase in the binding enthalpy of three ligands to MDM2 relative to MDMX mainly drives the binding selectivity of them toward MDM2 and MDMX. The information obtained from PC analysis shows that the associations of ligands exert important impacts on internal dynamics of MDM2 and MDMX. Meanwhile, the calculations of residue-based free energy decomposition not only identify the hot interaction spots of ligands with MDM2 and MDMX, but also show the residues (L54, M53), (Y67, Y66), (V93, V92), (H96, P95), (I99, I98) and (Y100, Y99) in (MDM2, MDMX) are responsible for most contributions to the binding selectivity of three ligands toward MDM2 and MDMX. It is believed that this work can provide useful information for design of highly selective and dual inhibitors targeting MDM2 and MDMX.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shuhua Shi
- School of Science, Shandong Jianzhu University, Jinan, China
| | - Kai Sui
- School of Science, Shandong Jianzhu University, Jinan, China
| | - Weizhe Liu
- School of Science, Shandong Jianzhu University, Jinan, China
| | - Yanzi Lei
- School of Science, Shandong Jianzhu University, Jinan, China
| | - Shaolong Zhang
- College of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Qinggang Zhang
- College of Physics and Electronics, Shandong Normal University, Jinan, China
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Rationale for a Combination Therapy Consisting of MCL1- and MEK-Inhibitors in Acute Myeloid Leukemia. Cancers (Basel) 2019; 11:cancers11111779. [PMID: 31718075 PMCID: PMC6896073 DOI: 10.3390/cancers11111779] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/07/2019] [Accepted: 11/08/2019] [Indexed: 11/17/2022] Open
Abstract
Amplification and overexpression of the myeloid cell leukemia differentiation protein MCL1 and the murine double minute protein MDM2 have been reported in various human tumors as well as hematological malignancies including acute myeloid leukemia (AML). While MCL1 is an anti-apoptotic member of the BCL-2 family proteins, MDM2 is an important cellular inhibitor of the p53 tumor suppressor. The key oncogene in AML is the FLT3 growth factor receptor gene. FLT3 signaling pathways including the MAPK cascade (RAS-RAF-MEK-ERK) are highly active in AML cells, leading to induced protein translation and cell proliferation as well as reduced apoptosis. Consequently, combined administration of MCL1-, MDM2-, and MEK-inhibitors may present a promising anti-leukemic treatment strategy. Here, we assessed the MCL1-antagonist S63845, the MDM2-inhibitor HDM201, and the MEK1/2-inhibitor trametinib as single agents and in combination in a variety of AML cell lines and mononuclear cells isolated from patients with hematological malignancies centered on myeloid leukemia, some lymphatic leukemia, as well as some lymphomas, for their ability to induce apoptosis and cell death. We observed a considerably varying anti-leukemic efficacy of the MCL1-inhibitor S63845 and the MEK1/2-inhibitor trametinib. Hematological cells with susceptibility to the single compounds as well as to the combined treatment were defined by elevated MCL1- and MEK-protein levels, independent of the mutational status of FLT3 and TP53. Our data indicate that hematological cells with elevated MCL1- and MEK-protein levels are most sensitive to the combined treatment with S63845 and trametinib. MCL1- and MEK1/2-protein expression may be valid biomarkers for treatment response to S63845 and trametinib, respectively.
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Barbosa K, Li S, Adams PD, Deshpande AJ. The role of TP53 in acute myeloid leukemia: Challenges and opportunities. Genes Chromosomes Cancer 2019; 58:875-888. [DOI: 10.1002/gcc.22796] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/02/2019] [Accepted: 08/05/2019] [Indexed: 12/16/2022] Open
Affiliation(s)
- Karina Barbosa
- Tumor Initiation and Maintenance Program Sanford Burnham Prebys Medical Discovery Institute La Jolla California
| | - Sha Li
- Tumor Initiation and Maintenance Program Sanford Burnham Prebys Medical Discovery Institute La Jolla California
| | - Peter D. Adams
- Tumor Initiation and Maintenance Program Sanford Burnham Prebys Medical Discovery Institute La Jolla California
| | - Aniruddha J. Deshpande
- Tumor Initiation and Maintenance Program Sanford Burnham Prebys Medical Discovery Institute La Jolla California
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Shamloo B, Usluer S. p21 in Cancer Research. Cancers (Basel) 2019; 11:cancers11081178. [PMID: 31416295 PMCID: PMC6721478 DOI: 10.3390/cancers11081178] [Citation(s) in RCA: 181] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/05/2019] [Accepted: 08/12/2019] [Indexed: 12/21/2022] Open
Abstract
p21 functions as a cell cycle inhibitor and anti-proliferative effector in normal cells, and is dysregulated in some cancers. Earlier observations on p21 knockout models emphasized the role of this protein in cell cycle arrest under the p53 transcription factor activity. Although tumor-suppressor function of p21 is the most studied aspect of this protein in cancer, the role of p21 in phenotypic plasticity and its oncogenic/anti-apoptotic function, depending on p21 subcellular localization and p53 status, have been under scrutiny recently. Basic science and translational studies use precision gene editing to manipulate p21 itself, and proteins that interact with it; these studies have led to regulatory/functional/drug sensitivity discoveries as well as therapeutic approaches in cancer field. In this review, we will focus on targeting p21 in cancer research and its potential in providing novel therapies.
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Affiliation(s)
- Bahar Shamloo
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA.
| | - Sinem Usluer
- Department of Molecular Biology & Biochemistry, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, 8010 Graz, Austria
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56
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Kallen J, Izaac A, Chau S, Wirth E, Schoepfer J, Mah R, Schlapbach A, Stutz S, Vaupel A, Guagnano V, Masuya K, Stachyra TM, Salem B, Chene P, Gessier F, Holzer P, Furet P. Structural States of Hdm2 and HdmX: X-ray Elucidation of Adaptations and Binding Interactions for Different Chemical Compound Classes. ChemMedChem 2019; 14:1305-1314. [PMID: 31066983 DOI: 10.1002/cmdc.201900201] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Indexed: 01/02/2023]
Abstract
Hdm2 (human MDM2, human double minute 2 homologue) counteracts p53 function by direct binding to p53 and by ubiquitin-dependent p53 protein degradation. Activation of p53 by inhibitors of the p53-Hdm2 interaction is being pursued as a therapeutic strategy in p53 wild-type cancers. In addition, HdmX (human MDMX, human MDM4) was also identified as an important therapeutic target to efficiently reactivate p53, and it is likely that dual inhibition of Hdm2 and HdmX is beneficial. Herein we report four new X-ray structures for Hdm2 and five new X-ray structures for HdmX complexes, involving different classes of synthetic compounds (including the worldwide highest resolutions for Hdm2 and HdmX, at 1.13 and 1.20 Å, respectively). We also reveal the key additive 18-crown-ether, which we discovered to enable HdmX crystallization and show its stabilization of various Lys residues. In addition, we report the previously unpublished details of X-ray structure determinations for eight further Hdm2 complexes, including the clinical trial compounds NVP-CGM097 and NVP-HDM201. An analysis of all compound binding modes reveals new and deepened insight into the possible adaptations and structural states of Hdm2 (e.g., flip of F55, flip of Y67, reorientation of H96) and HdmX (e.g., flip of H55, dimer induction), enabling key binding interactions for different compound classes. To facilitate comparisons, we used the same numbering for Hdm2 (as in Q00987) and HdmX (as in O15151, but minus 1). Taken together, these structural insights should prove useful for the design and optimization of further selective and/or dual Hdm2/HdmX inhibitors.
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Affiliation(s)
- Joerg Kallen
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Aude Izaac
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Suzanne Chau
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Emmanuelle Wirth
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Joseph Schoepfer
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Robert Mah
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Achim Schlapbach
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Stefan Stutz
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Andrea Vaupel
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Vito Guagnano
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | | | - Therese-Marie Stachyra
- Disease Area Oncology, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Bahaa Salem
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Patrick Chene
- Disease Area Oncology, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Francois Gessier
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Philipp Holzer
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
| | - Pascal Furet
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, 4002, Basel, Switzerland
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57
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Qian X, Nguyen DT, Dong Y, Sinikovic B, Kaufmann AM, Myers JN, Albers AE, Graviss EA. Prognostic Score Predicts Survival in HPV-Negative Head and Neck Squamous Cell Cancer Patients. Int J Biol Sci 2019; 15:1336-1344. [PMID: 31337965 PMCID: PMC6643134 DOI: 10.7150/ijbs.33329] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 03/17/2019] [Indexed: 12/11/2022] Open
Abstract
Although patients having head and neck squamous cell carcinoma (HNSCC) have high mortality, standardized prognostic tools are unavailable. As such, having a validated simple prognostic scoring system to help predict mortality in these high-risk patients is urgently needed. The current study aimed to develop and internally validate a prognostic scoring system for overall mortality in human papillomavirus (HPV)-independent HNSCC patients. Data on 400 consecutive patients from the Cancer Genome Atlas database with a known HPV-RNA negative status were analyzed. A prognostic model to predict patient overall mortality was developed using the logistic regression beta coefficients and a simple risk score was created. The model was internally validated using bootstrap validation with 2000 replications. Five covariates (age, pT, pN, perineural invasion, and EAp53 score) were used in the development of the mortality risk score in the final model. Three risk groups were stratified based on the prognostic scores: low-risk (<96 points), medium-risk (96-121 points), and high-risk (≥122 points) with a survival of 76%, 62% and 35%, respectively. The proposed model presented good discrimination in both the development (AUC = 0.76; 95% CI 0.70, 0.81) and bootstrap validation (AUC = 0.76; 95% CI 0.70, 0.81) with a non-significant Hosmer-Lemeshow chi-square of 6.17 (p = 0.63). The proposed prognostic scoring system is easy to use to predict patient overall mortality and could also help in the appropriate allocation of medical resources while managing HNSCC patients. External validation (including re-calibration if needed) should be conducted to test the model's generalizability in different populations.
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Affiliation(s)
- Xu Qian
- Division of Molecular Diagnostics, Department of Laboratory Medicine, Zhejiang Cancer Hospital, Hangzhou 310022, P.R. China.,Department of Otorhinolaryngology, Head and Neck Surgery, Berlin Institute of Health, Charité- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Campus Benjamin Franklin, Berlin 12200, Germany.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Zhejiang Provincial Key Laboratory of Medical Genetics, Wenzhou Medical University, Wenzhou 325035, P.R. China
| | - Duc T Nguyen
- Houston Methodist Research Institute, Houston 77030, United States
| | - Yue Dong
- Key Laboratory of Laboratory Medicine, Ministry of Education of China, Zhejiang Provincial Key Laboratory of Medical Genetics, Wenzhou Medical University, Wenzhou 325035, P.R. China
| | - Branko Sinikovic
- Department of Craniomaxillofacial, Oral and Plastic Surgery, Klinikum Ernst von Bergmann, Potsdam 14467, Germany
| | - Andreas M Kaufmann
- Clinic for Gynecology, Berlin Institute of Health, Charité- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Campus Benjamin Franklin, Berlin 12200, Germany
| | - Jeffrey N Myers
- Department of Head and Neck Surgery, The University of Texas M. D. Anderson Cancer Center, Houston 77030, United States
| | - Andreas E Albers
- Department of Otorhinolaryngology, Head and Neck Surgery, Berlin Institute of Health, Charité- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Campus Benjamin Franklin, Berlin 12200, Germany
| | - Edward A Graviss
- Houston Methodist Research Institute, Houston 77030, United States
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Liu Y, Wang X, Wang G, Yang Y, Yuan Y, Ouyang L. The past, present and future of potential small-molecule drugs targeting p53-MDM2/MDMX for cancer therapy. Eur J Med Chem 2019; 176:92-104. [PMID: 31100649 DOI: 10.1016/j.ejmech.2019.05.018] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/02/2019] [Accepted: 05/06/2019] [Indexed: 02/05/2023]
Abstract
The p53 gene, a well-known tumor suppressor gene, plays a crucial role in cell cycle regulation, DNA repair, cell differentiation, and apoptosis. MDM2 exerts p53-dependent activity mainly by binding to p53 protein to form MDM2-p53 negative feedback loop. In addition, MDM2 is involved in a number of pathways that regulate cell proliferation and apoptosis, playing a p53-independent role. The p53 binding domain of MDMX bind to p53 transcriptional activation domain, inhibiting the transcriptional activity of p53 on its downstream genes, but does not mediate the degradation of p53. The anti-tumor effect is exerted by inhibiting the interaction between the MDM2/MDMX protein and the p53 protein by a small-molecule or by restoring the activity of the p53 protein. This review describes in the structural features, biological functions and mechanisms of p53-MDM2/MDMX, and summarizes small-molecule targeting p53-MDM2/MDMX.
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Affiliation(s)
- Yao Liu
- State Key Laboratory of Biotherapy and Cancer Center, Department of Thoracic Surgery, West China Hospital, Sichuan University, China
| | - Xiaohui Wang
- Department of Pharmacy, Naval Authorities Clinic, Beijing, 100841, China
| | - Guan Wang
- State Key Laboratory of Biotherapy and Cancer Center, Department of Thoracic Surgery, West China Hospital, Sichuan University, China
| | - Yushang Yang
- State Key Laboratory of Biotherapy and Cancer Center, Department of Thoracic Surgery, West China Hospital, Sichuan University, China
| | - Yong Yuan
- State Key Laboratory of Biotherapy and Cancer Center, Department of Thoracic Surgery, West China Hospital, Sichuan University, China.
| | - Liang Ouyang
- State Key Laboratory of Biotherapy and Cancer Center, Department of Thoracic Surgery, West China Hospital, Sichuan University, China.
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Prahallad A, Jensen MR, Chapeau EA. Deciphering mechanisms of response and resistance in large-scale mouse cancer screens. Curr Opin Genet Dev 2019; 54:48-54. [PMID: 30954760 DOI: 10.1016/j.gde.2019.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/08/2019] [Accepted: 02/16/2019] [Indexed: 11/27/2022]
Abstract
Acquired resistance is a major limitation for the successful treatment of cancer patients. Although numerous efficacious cancer therapeutics have been developed in the past decades, resistance arises due to a variety of reasons including tumoral genetic alterations, or modulation of factors in the tumor environment. Understanding the mechanistic reasons for tumor relapse supports the identification of novel combination therapies that could lead to more durable responses. Here, we will review large-scale in vivo screens in pre-clinical cancer models that employed genetic and pharmacological agents toward elucidating acquired drug resistance and informing on beneficial combinations to be tested in clinical trials.
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Affiliation(s)
- Anirudh Prahallad
- Oncology Disease Area, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | | | - Emilie Anne Chapeau
- Oncology Disease Area, Novartis Institutes for BioMedical Research, Basel, Switzerland.
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Al-Ghabkari A, Narendran A. In Vitro Characterization of a Potent p53-MDM2 Inhibitor, RG7112 in Neuroblastoma Cancer Cell Lines. Cancer Biother Radiopharm 2019; 34:252-257. [PMID: 30724592 DOI: 10.1089/cbr.2018.2732] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Background: Neuroblastoma (NB) is one of the most aggressive and common solid tumors in pediatrics. Development of effective new therapeutics for NB is in progress to help reduce mortality and morbidity of the disease, particularly in relapsed patients. The tumor suppressor protein p53 plays a critical role in multiple signaling pathways to maintain cellular hemostasis. Dysregulation of p53 protein and/or molecular aberrations have been associated with multiple human malignancies. p53 stability and protein activity is negatively regulated by the E3 ubiquitin ligase (MDM2). Thus, targeting p53-MDM2 protein-protein interaction is a feasible and promising therapeutic strategy to restore the physiological function of p53 in cancer cells. RG7112 is a highly potent and selective small molecule inhibitor, which target a unique structure located within p53 binding motif of MDM2. Methods: The efficacy of RG7112 in vitro using NB cell lines was examined. Two wild-type (WT)-p53 NB cell lines IMR5 and LAN-5, a mutant p53 cell line SK-N-BE(2), and a WT-p53/p14 deleted cell line SH-EP were employed. Results: Data showed that RG7112 significantly reduced cellular viability of IMR5 (IC50, 562 nM) and LAN-5 (IC50, 430 nM), but not SK-N-BE(2) and SH-EP cells. Further, RG7112 restores p53 and p21 protein levels in IMR5 and LAN-5 in a dose-dependent manner. RG7112 induces cell cycle arresting (60% G1 arresting) in WT-p53 cells (IMR5), but no pronounced effect observed in SK-N-BE(2). In this study, 15 different drugs in combination with RG7112 in IMR5 cell line and identified venetoclax (Bcl-2/Bcl-xL inhibitor) as a promising candidate were evaluated. Conclusions: Taken together, these findings provide initial proof-of-concept data for further investigations of RG7112 in selected subgroups of NB patients.
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Affiliation(s)
- Abdulhameed Al-Ghabkari
- Department of Biochemistry and Molecular Biology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Aru Narendran
- Department of Biochemistry and Molecular Biology, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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