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Biersack B, Höpfner M. Emerging role of MYB transcription factors in cancer drug resistance. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2024; 7:15. [PMID: 38835346 PMCID: PMC11149108 DOI: 10.20517/cdr.2023.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/19/2024] [Accepted: 04/04/2024] [Indexed: 06/06/2024]
Abstract
Decades ago, the viral myeloblastosis oncogene v-myb was identified as a gene responsible for the development of avian leukemia. However, the relevance of MYB proteins for human cancer diseases, in particular for solid tumors, remained basically unrecognized for a very long time. The human family of MYB transcription factors comprises MYB (c-MYB), MYBL2 (b-MYB), and MYBL1 (a-MYB), which are overexpressed in several cancers and are associated with cancer progression and resistance to anticancer drugs. In addition to overexpression, the presence of activated MYB-fusion proteins as tumor drivers was described in certain cancers. The identification of anticancer drug resistance mediated by MYB proteins and their underlying mechanisms are of great importance in understanding failures of current therapies and establishing new and more efficient therapy regimens. In addition, new drug candidates targeting MYB transcription factor activity and signaling have emerged as a promising class of potential anticancer therapeutics that could tackle MYB-dependent drug-resistant cancers in a more selective way. This review describes the correlation of MYB transcription factors with the formation and persistence of cancer resistance to various approved and investigational anticancer drugs.
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Affiliation(s)
- Bernhard Biersack
- Organic Chemistry Laboratory, University of Bayreuth, Bayreuth 95440, Germany
| | - Michael Höpfner
- Institute for Physiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin 10117, Germany
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Ferrarotto R, Swiecicki PL, Zandberg DP, Baiocchi RA, Wesolowski R, Rodriguez CP, McKean M, Kang H, Monga V, Nath R, Palmisiano N, Babbar N, Sun W, Hanna GJ. PRT543, a protein arginine methyltransferase 5 inhibitor, in patients with advanced adenoid cystic carcinoma: An open-label, phase I dose-expansion study. Oral Oncol 2024; 149:106634. [PMID: 38118249 DOI: 10.1016/j.oraloncology.2023.106634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/02/2023] [Accepted: 11/15/2023] [Indexed: 12/22/2023]
Abstract
OBJECTIVES Currently, no systemic treatments are approved for patients with recurrent and/or metastatic (R/M) adenoid cystic carcinoma (ACC). PRT543, a protein arginine methyltransferase 5 inhibitor that downregulates NOTCH1 and MYB signalling in tumours, is a potential candidate for R/M ACC treatment. We report the safety, tolerability and preliminary efficacy of PRT543 in a dose-expansion cohort of patients with R/M ACC. MATERIALS AND METHODS This phase I multicentre, open-label, sequential-cohort, dose-escalation and dose-expansion study (NCT03886831) enrolled patients with advanced solid tumours and select haematologic malignancies. Dose-escalation study design and results were reported previously. In the dose expansion, patients with R/M ACC received recommended phase II doses of 35 or 45 mg PRT543 orally on days 1-5 of each week. Primary objectives were to establish the safety and tolerability of PRT543. Secondary objectives included efficacy. RESULTS Between February 2019 and May 2022, 56 patients with ACC were enrolled across 23 US sites and received either 35 mg (n = 28) or 45 mg (n = 28) of PRT543. Overall, 23% of patients experienced a grade 3 treatment-related adverse event, most commonly anaemia (16%) and thrombocytopaenia (9%). No grade 4/5 treatment-emergent adverse events were reported. Median progression-free survival was 5.9 months (95% CI: 3.8-8.3). The clinical benefit rate was 57% (95% CI: 43-70). Overall response rate (per Response Evaluation Criteria in Solid Tumours v1.1) was 2%, with 70% of patients having stable disease. CONCLUSION In this analysis, PRT543 was tolerable, and the observed efficacy was limited in patients with R/M ACC.
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Affiliation(s)
- Renata Ferrarotto
- Department of Thoracic/Head and Neck Medical, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
| | - Paul L Swiecicki
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Dan P Zandberg
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Robert A Baiocchi
- Department of Medicine, Division of Hematology, Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Robert Wesolowski
- Department of Medicine, Division of Medical Oncology, Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | | | - Meredith McKean
- Sarah Cannon Research Institute, Tennessee Oncology, Nashville, TN, USA
| | - Hyunseok Kang
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Varun Monga
- Department of Medicine, Division of Oncology, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | | | - Neil Palmisiano
- Department of Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Naveen Babbar
- Prelude Therapeutics, Research and Development, Wilmington, DE, USA
| | - William Sun
- Prelude Therapeutics, Research and Development, Wilmington, DE, USA
| | - Glenn J Hanna
- Center for Head and Neck Oncology, Center for Salivary and Rare Head and Neck Cancers, Dana-Farber Cancer Institute, Boston, MA, USA
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Hellmich C, Bowles K, Rushworth S. ARQ531: the therapy that targets multiple pathways in acute myeloid leukemia. Haematologica 2020; 105:2350-2352. [PMID: 33054073 PMCID: PMC7556655 DOI: 10.3324/haematol.2020.257022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Affiliation(s)
- Charlotte Hellmich
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich; Department of Haematology, Norfolk and Norwich University Hospitals NHS Trust, Norwich, UK
| | - Kristian Bowles
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich; Department of Haematology, Norfolk and Norwich University Hospitals NHS Trust, Norwich, UK
| | - Stuart Rushworth
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich.
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RNA-Binding Proteins in Acute Leukemias. Int J Mol Sci 2020; 21:ijms21103409. [PMID: 32408494 PMCID: PMC7279408 DOI: 10.3390/ijms21103409] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/07/2020] [Accepted: 05/10/2020] [Indexed: 12/12/2022] Open
Abstract
Acute leukemias are genetic diseases caused by translocations or mutations, which dysregulate hematopoiesis towards malignant transformation. However, the molecular mode of action is highly versatile and ranges from direct transcriptional to post-transcriptional control, which includes RNA-binding proteins (RBPs) as crucial regulators of cell fate. RBPs coordinate RNA dynamics, including subcellular localization, translational efficiency and metabolism, by binding to their target messenger RNAs (mRNAs), thereby controlling the expression of the encoded proteins. In view of the growing interest in these regulators, this review summarizes recent research regarding the most influential RBPs relevant in acute leukemias in particular. The reported RBPs, either dysregulated or as components of fusion proteins, are described with respect to their functional domains, the pathways they affect, and clinical aspects associated with their dysregulation or altered functions.
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