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Lemay SE, Montesinos MS, Grobs Y, Yokokawa T, Shimauchi T, Romanet C, Sauvaget M, Breuils-Bonnet S, Bourgeois A, Théberge C, Pelletier A, El Kabbout R, Martineau S, Yamamoto K, Ray AS, Lippa B, Goodwin B, Lin FY, Wang H, Dowling JE, Lu M, Qiao Q, McTeague TA, Moy TI, Potus F, Provencher S, Boucherat O, Bonnet S. Exploring Integrin α5β1 as a Potential Therapeutic Target for Pulmonary Arterial Hypertension: Insights from Comprehensive Multicenter Preclinical Studies. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.27.596052. [PMID: 38854025 PMCID: PMC11160677 DOI: 10.1101/2024.05.27.596052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Pulmonary arterial hypertension (PAH) is characterized by obliterative vascular remodeling of the small pulmonary arteries (PA) and progressive increase in pulmonary vascular resistance (PVR) leading to right ventricular (RV) failure. Although several drugs are approved for the treatment of PAH, mortality remains high. Accumulating evidence supports a pathological function of integrins in vessel remodeling, which are gaining renewed interest as drug targets. However, their role in PAH remains largely unexplored. We found that the arginine-glycine-aspartate (RGD)-binding integrin α5β1 is upregulated in PA endothelial cells (PAEC) and PA smooth muscle cells (PASMC) from PAH patients and remodeled PAs from animal models. Blockade of the integrin α5β1 or depletion of the α5 subunit resulted in mitotic defects and inhibition of the pro-proliferative and apoptosis-resistant phenotype of PAH cells. Using a novel small molecule integrin inhibitor and neutralizing antibodies, we demonstrated that α5β1 integrin blockade attenuates pulmonary vascular remodeling and improves hemodynamics and RV function in multiple preclinical models. Our results provide converging evidence to consider α5β1 integrin inhibition as a promising therapy for pulmonary hypertension. One sentence summary The α5β1 integrin plays a crucial role in pulmonary vascular remodeling.
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Jiang Y, Zhou H, Liu J, Ha W, Xia X, Li J, Chao T, Xiong H. Progress and Innovative Combination Therapies in Trop-2-Targeted ADCs. Pharmaceuticals (Basel) 2024; 17:652. [PMID: 38794221 PMCID: PMC11125602 DOI: 10.3390/ph17050652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/12/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
Precise targeting has become the main direction of anti-cancer drug development. Trophoblast cell surface antigen 2 (Trop-2) is highly expressed in different solid tumors but rarely in normal tissues, rendering it an attractive target. Trop-2-targeted antibody-drug conjugates (ADCs) have displayed promising efficacy in treating diverse solid tumors, especially breast cancer and urothelial carcinoma. However, their clinical application is still limited by insufficient efficacy, excessive toxicity, and the lack of biological markers related to effectiveness. This review summarizes the clinical trials and combination therapy strategies for Trop-2-targeted ADCs, discusses the current challenges, and provides new insights for future advancements.
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Affiliation(s)
| | | | | | | | | | | | - Tengfei Chao
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Y.J.); (H.Z.); (J.L.); (W.H.); (X.X.); (J.L.)
| | - Huihua Xiong
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Y.J.); (H.Z.); (J.L.); (W.H.); (X.X.); (J.L.)
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3
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Liu C, Vorderbruggen M, Muñoz-Trujillo C, Kim SH, Katzenellenbogen JA, Katzenellenbogen BS, Karpf AR. NB compounds are potent and efficacious FOXM1 inhibitors in high-grade serous ovarian cancer cells. J Ovarian Res 2024; 17:94. [PMID: 38704607 PMCID: PMC11069232 DOI: 10.1186/s13048-024-01421-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/20/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Genetic studies implicate the oncogenic transcription factor Forkhead Box M1 (FOXM1) as a potential therapeutic target in high-grade serous ovarian cancer (HGSOC). We evaluated the activity of different FOXM1 inhibitors in HGSOC cell models. RESULTS We treated HGSOC and fallopian tube epithelial (FTE) cells with a panel of previously reported FOXM1 inhibitors. Based on drug potency, efficacy, and selectivity, determined through cell viability assays, we focused on two compounds, NB-73 and NB-115 (NB compounds), for further investigation. NB compounds potently and selectively inhibited FOXM1 with lesser effects on other FOX family members. NB compounds decreased FOXM1 expression via targeting the FOXM1 protein by promoting its proteasome-mediated degradation, and effectively suppressed FOXM1 gene targets at both the protein and mRNA level. At the cellular level, NB compounds promoted apoptotic cell death. Importantly, while inhibition of apoptosis using a pan-caspase inhibitor rescued HGSOC cells from NB compound-induced cell death, it did not rescue FOXM1 protein degradation, supporting that FOXM1 protein loss from NB compound treatment is specific and not a general consequence of cytotoxicity. Drug washout studies indicated that FOXM1 reduction was retained for at least 72 h post-treatment, suggesting that NB compounds exhibit long-lasting effects in HGSOC cells. NB compounds effectively suppressed both two-dimensional and three-dimensional HGSOC cell colony formation at sub-micromolar concentrations. Finally, NB compounds exhibited synergistic activity with carboplatin in HGSOC cells. CONCLUSIONS NB compounds are potent, selective, and efficacious inhibitors of FOXM1 in HGSOC cells and are worthy of further investigation as HGSOC therapeutics.
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Affiliation(s)
- Cassie Liu
- Eppley Institute, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA
| | - Makenzie Vorderbruggen
- Eppley Institute, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA
| | - Catalina Muñoz-Trujillo
- Eppley Institute, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA
| | - Sung Hoon Kim
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - John A Katzenellenbogen
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Benita S Katzenellenbogen
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Adam R Karpf
- Eppley Institute, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA.
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68918-6805, USA.
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Xiao J, Wang L, Zhuang Y, Zhu Q, Li W, Liao H, Chen X, Liu Z. The deubiquitinase OTUB2 promotes cervical cancer growth through stabilizing FOXM1. Am J Transl Res 2024; 16:75-84. [PMID: 38322554 PMCID: PMC10839374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 12/06/2023] [Indexed: 02/08/2024]
Abstract
OBJECTIVES Ovarian tumor (OTU) domain-containing ubiquitin aldehyde-binding protein Otubain2 (OTUB2) is an important cysteine protease with deubiquitinase activity in the OTU family. However, the role of OTUB2 in cervical cancer (CC) has not been investigated. METHODS OTUB2 expression was analyzed employing the CC data from The Cancer Genome Atlas (TCGA) database. Western blot and qRT-PCR analysis were performed to identify OTUB2 expression in CC. The oncogenic function of OTUB2 was identified through a series of in vitro and in vivo experiments. Tandem Mass Tag™ Quantitative Proteomics examination was used to identify potential targets of OTUB2. RESULTS OTUB2 was overexpressed in CC and was related to poor prognosis of patients. In our in-house cohort, we also showed that OTUB2 was overexpressed in tumor tissues of CC compared to para-tumor. Knockdown of OTUB2 suppressed CC cell growth whereas OTUB2 upregulation fostered the proliferation of cancer cells. Forkhead box M1 (FOXM1) was found to be a target of OTUB2. FOXM1 can be positively regulated by OTUB2 in CC cells. In human CC tissues, protein level of FOXM1 was positively correlated with OTUB2. FOXM1 was found to play a critical role in OTUB2-mediated CC cell growth. Mechanistically, OTUB2 could bind FOXM1 and deubiquitinate FOXM1 to stabilize it. CONCLUSION OTUB2 promotes CC progression through deubiquitinating and stabilizing FOXM1.
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Affiliation(s)
- Jing Xiao
- Department of Reproductive Medicine Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang UniversityNanchang 330006, Jiangxi, PR China
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Liqun Wang
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Yuan Zhuang
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Qizhou Zhu
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Weimei Li
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Hong Liao
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Xiaofang Chen
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health HospitalNanchang 330006, Jiangxi, PR China
| | - Zhaoxia Liu
- Department of Reproductive Medicine Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang UniversityNanchang 330006, Jiangxi, PR China
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Chen W, Hu Z, Guo Z. Targeting CD24 in Cancer Immunotherapy. Biomedicines 2023; 11:3159. [PMID: 38137380 PMCID: PMC10740697 DOI: 10.3390/biomedicines11123159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
Immunotherapy is a hot area in cancer treatment, and one of the keys to this therapy is the identification of the right tumour-associated or tumour-specific antigen. Cluster of differentiation 24 (CD24) is an emerging tumour-associated antigen that is commonly and highly expressed in various tumours. In addition, CD24 is associated with several cancer-related signalling pathways and closely interacts with other molecules and immune cells to influence tumour progression. Monoclonal antibodies, antibody-drug conjugates (ADCs), chimeric antigen receptor (CAR) T-cell therapy, and CAR-NK cell therapy are currently available for the treatment of CD24. In this review, we summarise the existing therapeutic approaches and possible future directions targeting CD24.
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Affiliation(s)
| | - Zhigang Hu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China;
| | - Zhigang Guo
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China;
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Raghuwanshi S, Gartel AL. Small-molecule inhibitors targeting FOXM1: Current challenges and future perspectives in cancer treatments. Biochim Biophys Acta Rev Cancer 2023; 1878:189015. [PMID: 37913940 DOI: 10.1016/j.bbcan.2023.189015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/03/2023]
Abstract
Forkhead box (FOX) protein M1 (FOXM1) is a critical proliferation-associated transcription factor (TF) that is aberrantly overexpressed in the majority of human cancers and has also been implicated in poor prognosis. A comprehensive understanding of various aspects of this molecule has revealed its role in, cell proliferation, cell migration, invasion, angiogenesis and metastasis. The FOXM1 as a TF directly or indirectly regulates the expression of several target genes whose dysregulation is associated with almost all hallmarks of cancer. Moreover, FOXM1 expression is associated with chemoresistance to different anti-cancer drugs. Several studies have confirmed that suppression of FOXM1 enhanced the drug sensitivity of various types of cancer cells. Current data suggest that small molecule inhibitors targeting FOXM1 in combination with anticancer drugs may represent a novel therapeutic strategy for chemo-resistant cancers. In this review, we discuss the clinical utility of FOXM1, further, we summarize and discuss small-molecule inhibitors targeting FOXM1 and categorize them according to their mechanisms of targeting FOXM1. Despite great progress, small-molecule inhibitors targeting FOXM1 face many challenges, and we present here all small-molecule FOXM1 inhibitors in different stages of development. We discuss the current challenges and provide insights on the future application of FOXM1 inhibition to the clinic.
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Affiliation(s)
- Sanjeev Raghuwanshi
- University of Illinois at Chicago, Department of Medicine, Chicago, IL 60612, USA
| | - Andrei L Gartel
- University of Illinois at Chicago, Department of Medicine, Chicago, IL 60612, USA.
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Le Minh G, Esquea EM, Young RG, Huang J, Reginato MJ. On a sugar high: Role of O-GlcNAcylation in cancer. J Biol Chem 2023; 299:105344. [PMID: 37838167 PMCID: PMC10641670 DOI: 10.1016/j.jbc.2023.105344] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 10/16/2023] Open
Abstract
Recent advances in the understanding of the molecular mechanisms underlying cancer progression have led to the development of novel therapeutic targeting strategies. Aberrant glycosylation patterns and their implication in cancer have gained increasing attention as potential targets due to the critical role of glycosylation in regulating tumor-specific pathways that contribute to cancer cell survival, proliferation, and progression. A special type of glycosylation that has been gaining momentum in cancer research is the modification of nuclear, cytoplasmic, and mitochondrial proteins, termed O-GlcNAcylation. This protein modification is catalyzed by an enzyme called O-GlcNAc transferase (OGT), which uses the final product of the Hexosamine Biosynthetic Pathway (HBP) to connect altered nutrient availability to changes in cellular signaling that contribute to multiple aspects of tumor progression. Both O-GlcNAc and its enzyme OGT are highly elevated in cancer and fulfill the crucial role in regulating many hallmarks of cancer. In this review, we present and discuss the latest findings elucidating the involvement of OGT and O-GlcNAc in cancer.
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Affiliation(s)
- Giang Le Minh
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - Emily M Esquea
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - Riley G Young
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - Jessie Huang
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - Mauricio J Reginato
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA; Translational Cellular Oncology Program, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
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8
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Attalla SS, Boucher J, Proud H, Taifour T, Zuo D, Sanguin-Gendreau V, Ling C, Johnson G, Li V, Luo RB, Kuasne H, Papavasiliou V, Walsh LA, Barok M, Joensuu H, Park M, Roux PP, Muller WJ. HER2Δ16 Engages ENPP1 to Promote an Immune-Cold Microenvironment in Breast Cancer. Cancer Immunol Res 2023; 11:1184-1202. [PMID: 37311021 DOI: 10.1158/2326-6066.cir-22-0140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/07/2023] [Accepted: 06/09/2023] [Indexed: 06/15/2023]
Abstract
The tumor-immune microenvironment (TIME) is a critical determinant of therapeutic response. However, the mechanisms regulating its modulation are not fully understood. HER2Δ16, an oncogenic splice variant of the HER2, has been implicated in breast cancer and other tumor types as a driver of tumorigenesis and metastasis. Nevertheless, the underlying mechanisms of HER2Δ16-mediated oncogenicity remain poorly understood. Here, we show that HER2∆16 expression is not exclusive to the clinically HER2+ subtype and associates with a poor clinical outcome in breast cancer. To understand how HER2 variants modulated the tumor microenvironment, we generated transgenic mouse models expressing either proto-oncogenic HER2 or HER2Δ16 in the mammary epithelium. We found that HER2∆16 tumors were immune cold, characterized by low immune infiltrate and an altered cytokine profile. Using an epithelial cell surface proteomic approach, we identified ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) as a functional regulator of the immune cold microenvironment. We generated a knock-in model of HER2Δ16 under the endogenous promoter to understand the role of Enpp1 in aggressive HER2+ breast cancer. Knockdown of Enpp1 in HER2Δ16-derived tumor cells resulted in decreased tumor growth, which correlated with increased T-cell infiltration. These findings suggest that HER2Δ16-dependent Enpp1 activation associates with aggressive HER2+ breast cancer through its immune modulatory function. Our study provides a better understanding of the mechanisms underlying HER2Δ16-mediated oncogenicity and highlights ENPP1 as a potential therapeutic target in aggressive HER2+ breast cancer.
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Affiliation(s)
- Sherif Samer Attalla
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Jonathan Boucher
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
| | - Hailey Proud
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Tarek Taifour
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Department of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Dongmei Zuo
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Virginie Sanguin-Gendreau
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Chen Ling
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Gabriella Johnson
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Vincent Li
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Robin B Luo
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Department of Human Genetics, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Hellen Kuasne
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Vasilios Papavasiliou
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Logan A Walsh
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Department of Human Genetics, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Mark Barok
- Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Heikki Joensuu
- Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Morag Park
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Department of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Philippe P Roux
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, Canada
- Department of Pathology and Cell Biology, Université de Montréal, Montreal, Canada
| | - William J Muller
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Goodman Cancer Institute, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Department of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
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Katzenellenbogen BS, Guillen VS, Katzenellenbogen JA. Targeting the oncogenic transcription factor FOXM1 to improve outcomes in all subtypes of breast cancer. Breast Cancer Res 2023; 25:76. [PMID: 37370117 DOI: 10.1186/s13058-023-01675-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023] Open
Abstract
FOXM1 (Forkhead box M1) is an oncogenic transcription factor that is greatly upregulated in breast cancer and many other cancers where it promotes tumorigenesis, and cancer growth and progression. It is expressed in all subtypes of breast cancer and is the factor most associated with risk of poor patient survival, especially so in triple negative breast cancer (TNBC). Thus, new approaches to inhibiting FOXM1 and its activities, and combination therapies utilizing FOXM1 inhibitors in conjunction with known cancer drugs that work together synergistically, could improve cancer treatment outcomes. Targeting FOXM1 might prove especially beneficial in TNBC where few targeted therapies currently exist, and also in suppressing recurrent advanced estrogen receptor (ER)-positive and HER2-positive breast cancers for which treatments with ER or HER2 targeted therapies that were effective initially are no longer beneficial. We present these perspectives and future directions in the context of what is known about FOXM1, its regulation, and its key roles in promoting cancer aggressiveness and metastasis, while being absent or very low in most normal non-regenerating adult tissues. We discuss new inhibitors of FOXM1 and highlight FOXM1 as an attractive target for controlling drug-resistant and difficult-to-suppress breast cancers, and how blocking FOXM1 might improve outcomes for patients with all subtypes of breast cancer.
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Affiliation(s)
- Benita S Katzenellenbogen
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
| | - Valeria Sanabria Guillen
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - John A Katzenellenbogen
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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Tufail M. DNA repair pathways in breast cancer: from mechanisms to clinical applications. Breast Cancer Res Treat 2023:10.1007/s10549-023-06995-z. [PMID: 37289340 DOI: 10.1007/s10549-023-06995-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/25/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND Breast cancer (BC) is a complex disease with various subtypes and genetic alterations that impact DNA repair pathways. Understanding these pathways is essential for developing effective treatments and improving patient outcomes. AREA COVERED This study investigates the significance of DNA repair pathways in breast cancer, specifically focusing on various pathways such as nucleotide excision repair, base excision repair, mismatch repair, homologous recombination repair, non-homologous end joining, fanconi anemia pathway, translesion synthesis, direct repair, and DNA damage tolerance. The study also examines the role of these pathways in breast cancer resistance and explores their potential as targets for cancer treatment. CONCLUSION Recent advances in targeted therapies have shown promise in exploiting DNA repair pathways for BC treatment. However, much research is needed to improve the efficacy of these therapies and identify new targets. Additionally, personalized treatments that target specific DNA repair pathways based on tumor subtype or genetic profile are being developed. Advances in genomics and imaging technologies can potentially improve patient stratification and identify biomarkers of treatment response. However, many challenges remain, including toxicity, resistance, and the need for more personalized treatments. Continued research and development in this field could significantly improve BC treatment.
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Affiliation(s)
- Muhammad Tufail
- Institute of Biomedical Sciences, Shanxi University, Taiyuan, 030006, China.
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