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Zhao M, DiPeri TP, Raso MG, Zheng X, Rizvi YQ, Evans KW, Yang F, Akcakanat A, Roberto Estecio M, Tripathy D, Dumbrava EE, Damodaran S, Meric-Bernstam F. Epigenetically upregulating TROP2 and SLFN11 enhances therapeutic efficacy of TROP2 antibody drug conjugate sacitizumab govitecan. NPJ Breast Cancer 2023; 9:66. [PMID: 37567892 PMCID: PMC10421911 DOI: 10.1038/s41523-023-00573-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
TROP2 antibody drug conjugates (ADCs) are under active development. We seek to determine whether we can enhance activity of TROP2 ADCs by increasing TROP2 expression. In metaplastic breast cancers (MpBC), there is limited expression of TROP2, and downregulating transcription factor ZEB1 upregulates E-cad and TROP2, thus sensitizing cancers to TROP2 ADC sacituzumab govitecan (SG). Demethylating agent decitabine decreases DNA methyltransferase expression and TROP2 promoter methylation and subsequently increases TROP2 expression. Decitabine treatment as well as overexpression of TROP2 significantly enhance SG antitumor activity. Decitabine also increases SLFN11, a biomarker of topoisomerase 1 inhibitor (TOP1) sensitivity and is synergistic with SG which has a TOP1 payload, in TROP2-expressing SLFN11-low BC cells. In conclusion, TROP2 and SLFN11 expression can be epigenetically modulated and the combination of demethylating agent decitabine with TROP2 ADCs may represent a novel therapeutic approach for tumors with low TROP2 or SLFN11 expression.
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Affiliation(s)
- Ming Zhao
- Department of Investigational Cancer Therapeutics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Timothy P DiPeri
- Department of Surgical Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Maria Gabriela Raso
- Department of Translational Molecular Pathology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Xiaofeng Zheng
- Department of Bioinformatics and Computational Biology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Yasmeen Qamar Rizvi
- Department of Investigational Cancer Therapeutics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Kurt W Evans
- Department of Investigational Cancer Therapeutics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Fei Yang
- Department of Translational Molecular Pathology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Argun Akcakanat
- Department of Investigational Cancer Therapeutics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Marco Roberto Estecio
- Department of Epigenetic and Molecular Carcinogenesis, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Debu Tripathy
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Ecaterina E Dumbrava
- Department of Investigational Cancer Therapeutics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Senthil Damodaran
- Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Funda Meric-Bernstam
- Department of Investigational Cancer Therapeutics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
- Department of Breast Surgical Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
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Zhang Z, Huang N, Xv F, Zhao S, Guo J, Zhao Y, Chang C. Decreased FOXO1 Expression Is Correlated with Poor Prognosis in Myelodysplastic Syndromes. Curr Oncol 2022; 29:6933-6946. [PMID: 36290822 PMCID: PMC9600488 DOI: 10.3390/curroncol29100545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/18/2022] [Accepted: 09/20/2022] [Indexed: 01/13/2023] Open
Abstract
Myelodysplastic syndrome is one of the main hematological malignancies that threaten the health of the elderly. However, biomarkers which predict the progression and prognosis of MDS are still controversial and puzzling. FOXO1 gene plays an important role in a variety of intracellular functions, including tumor suppression and cellular immune regulation. However, there is no research report on the correlation between FOXO1 and the clinical features of MDS including immune environment. In this study, we observed that FOXO1 expression is associated with neutrophil count, blasts, chromosome and different MDS scoring systems. FOXO1 expression is closely related to MDS cell immune polarization, and the increase expression of FOXO1 is significantly related to the amplification of immune cell polarization ratio. In addition, FOXO1 expression is associated with progression-free survival and overall survival in MDS patients. Moreover, in a multivariate model FOXO1 low-expression was an independent predictor of poor survival in MDS. In summary, FOXO1 may play a candidate tumor suppressor in MDS, and FOXO1 is a useful independent prognostic predictor in MDS, and it may provide a candidate target therapy in future.
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