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Gowans FA, Forte N, Hatcher J, Huang OW, Wang Y, Altamirano Poblano BE, Wertz IE, Nomura DK. Covalent Degrader of the Oncogenic Transcription Factor β-Catenin. J Am Chem Soc 2024. [PMID: 38848252 DOI: 10.1021/jacs.4c05174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
β-catenin (CTNNB1) is an oncogenic transcription factor that is important in cell-cell adhesion and transcription of cell proliferation and survival genes that drive the pathogenesis of many different types of cancers. However, direct pharmacological targeting of CTNNB1 has remained challenging. Here, we have performed a screen with a library of cysteine-reactive covalent ligands to identify the monovalent degrader EN83 that depletes CTNNB1 in a ubiquitin-proteasome-dependent manner. We show that EN83 directly and covalently targets CTNNB1 three cysteines C466, C520, and C619, leading to destabilization and degradation of CTNNB1. Through structural optimization, we generate a highly potent and relatively selective destabilizing degrader that acts through the targeting of only C619 on CTNNB1. Our results show that chemoproteomic approaches can be used to covalently target and degrade challenging transcription factors like CTNNB1 through destabilization-mediated degradation.
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Affiliation(s)
- Flor A Gowans
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Innovative Genomics Institute, Berkeley, California 94720, United States
| | - Nafsika Forte
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Innovative Genomics Institute, Berkeley, California 94720, United States
| | - Justin Hatcher
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Innovative Genomics Institute, Berkeley, California 94720, United States
| | - Oscar W Huang
- Bristol Myers Squibb, San Francisco, California 94158, United States
| | - Yangzhi Wang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Innovative Genomics Institute, Berkeley, California 94720, United States
| | - Belen E Altamirano Poblano
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Innovative Genomics Institute, Berkeley, California 94720, United States
| | - Ingrid E Wertz
- Bristol Myers Squibb, San Francisco, California 94158, United States
| | - Daniel K Nomura
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Innovative Genomics Institute, Berkeley, California 94720, United States
- Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, United States
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2
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Zhou J, Toh SHM, Tan TK, Balan K, Lim JQ, Tan TZ, Xiong S, Jia Y, Ng SB, Peng Y, Jeyasekharan AD, Fan S, Lim ST, Ong CAJ, Ong CK, Sanda T, Chng WJ. Super-enhancer-driven TOX2 mediates oncogenesis in Natural Killer/T Cell Lymphoma. Mol Cancer 2023; 22:69. [PMID: 37032358 PMCID: PMC10084643 DOI: 10.1186/s12943-023-01767-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 03/24/2023] [Indexed: 04/11/2023] Open
Abstract
BACKGROUND Extranodal natural killer/T-cell lymphoma (NKTL) is an aggressive type of non-Hodgkin lymphoma with dismal outcome. A better understanding of disease biology and key oncogenic process is necessary for the development of targeted therapy. Super-enhancers (SEs) have been shown to drive pivotal oncogenes in various malignancies. However, the landscape of SEs and SE-associated oncogenes remain elusive in NKTL. METHODS We used Nano-ChIP-seq of the active enhancer marker histone H3 lysine 27 acetylation (H3K27ac) to profile unique SEs NKTL primary tumor samples. Integrative analysis of RNA-seq and survival data further pinned down high value, novel SE oncogenes. We utilized shRNA knockdown, CRISPR-dCas9, luciferase reporter assay, ChIP-PCR to investigate the regulation of transcription factor (TF) on SE oncogenes. Multi-color immunofluorescence (mIF) staining was performed on an independent cohort of clinical samples. Various function experiments were performed to evaluate the effects of TOX2 on the malignancy of NKTL in vitro and in vivo. RESULTS SE landscape was substantially different in NKTL samples in comparison with normal tonsils. Several SEs at key transcriptional factor (TF) genes, including TOX2, TBX21(T-bet), EOMES, RUNX2, and ID2, were identified. We confirmed that TOX2 was aberrantly overexpressed in NKTL relative to normal NK cells and high expression of TOX2 was associated with worse survival. Modulation of TOX2 expression by shRNA, CRISPR-dCas9 interference of SE function impacted on cell proliferation, survival and colony formation ability of NKTL cells. Mechanistically, we found that RUNX3 regulates TOX2 transcription by binding to the active elements of its SE. Silencing TOX2 also impaired tumor formation of NKTL cells in vivo. Metastasis-associated phosphatase PRL-3 has been identified and validated as a key downstream effector of TOX2-mediated oncogenesis. CONCLUSIONS Our integrative SE profiling strategy revealed the landscape of SEs, novel targets and insights into molecular pathogenesis of NKTL. The RUNX3-TOX2-SE-TOX2-PRL-3 regulatory pathway may represent a hallmark of NKTL biology. Targeting TOX2 could be a valuable therapeutic intervene for NKTL patients and warrants further study in clinic.
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Affiliation(s)
- Jianbiao Zhou
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- NUS Centre for Cancer Research (N2CR), 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Sabrina Hui-Min Toh
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Tze King Tan
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Kalpnaa Balan
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Jing Quan Lim
- Division of Cellular and Molecular Research, Lymphoma Genomic Translational Research Laboratory, National Cancer Centre Singapore, 11 Hospital Drive, Singapore, 169610, Singapore
- Duke-NUS Medical School, Singapore, 169857, Singapore
| | - Tuan Zea Tan
- Genomics and Data Analytics Core (GeDaC), Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Singapore, 117599, Singapore
| | - Sinan Xiong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
| | - Yunlu Jia
- Department of Medical Oncology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Siok-Bian Ng
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119074, Singapore
| | - Yanfen Peng
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Anand D Jeyasekharan
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- NUS Centre for Cancer Research (N2CR), 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Shuangyi Fan
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119074, Singapore
| | - Soon Thye Lim
- Director's office, National Cancer Centre, Singapore, 168583, Singapore
- Office of Education, Duke-NUS Medical School, Singapore, 169857, Singapore
| | - Chin-Ann Johnny Ong
- Department of Sarcoma, Peritoneal and Rare Tumours (SPRinT), Division of Surgery and Surgical Oncology, National Cancer Centre, Singapore, 168583, Singapore
- Department of Sarcoma, Peritoneal and Rare Tumours (SPRinT), Division of Surgery and Surgical Oncology, Singapore General Hospital, Singapore, 168583, Singapore
- Laboratory of Applied Human Genetics, Division of Medical Sciences, National Cancer Centre, Singapore, 168583, Singapore
- SingHealth Duke-NUS Oncology Academic Clinical Program, Duke-NUS Medical School, Singapore, 169857, Singapore
- SingHealth Duke-NUS Surgery Academic Clinical Program, Duke-NUS Medical School, Singapore, 169857, Singapore
- Institute of Molecular and Cell Biology, A*STAR Research Entities, Singapore, 138673, Singapore
| | - Choon Kiat Ong
- Division of Cellular and Molecular Research, Lymphoma Genomic Translational Research Laboratory, National Cancer Centre Singapore, 11 Hospital Drive, Singapore, 169610, Singapore.
- Cancer and Stem Cell Biology, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore.
| | - Takaomi Sanda
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore.
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.
| | - Wee-Joo Chng
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore.
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.
- NUS Centre for Cancer Research (N2CR), 14 Medical Drive, Centre for Translational Medicine, Singapore, 117599, Singapore.
- Department of Hematology-Oncology, National University Cancer Institute of Singapore (NCIS), National University Health System (NUHS), 1E, Kent Ridge Road, Singapore, 119228, Singapore.
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3
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Targeting β-catenin in acute myeloid leukaemia: past, present, and future perspectives. Biosci Rep 2022; 42:231097. [PMID: 35352805 PMCID: PMC9069440 DOI: 10.1042/bsr20211841] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/14/2022] [Accepted: 03/30/2022] [Indexed: 11/24/2022] Open
Abstract
Acute myeloid leukaemia (AML) is an aggressive disease of the bone marrow with a poor prognosis. Evidence suggests long established chemotherapeutic regimens used to treat AML are reaching the limits of their efficacy, necessitating the urgent development of novel targeted therapies. Canonical Wnt signalling is an evolutionary conserved cascade heavily implicated in normal developmental and disease processes in humans. For over 15 years its been known that the central mediator of this pathway, β-catenin, is dysregulated in AML promoting the emergence, maintenance, and drug resistance of leukaemia stem cells. Yet, despite this knowledge, and subsequent studies demonstrating the therapeutic potential of targeting Wnt activity in haematological cancers, β-catenin inhibitors have not yet reached the clinic. The aim of this review is to summarise the current understanding regarding the role and mechanistic dysregulation of β-catenin in AML, and assess the therapeutic merit of pharmacologically targeting this molecule, drawing on lessons from other disease contexts.
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Ahmadi SE, Rahimi S, Zarandi B, Chegeni R, Safa M. MYC: a multipurpose oncogene with prognostic and therapeutic implications in blood malignancies. J Hematol Oncol 2021; 14:121. [PMID: 34372899 PMCID: PMC8351444 DOI: 10.1186/s13045-021-01111-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/12/2021] [Indexed: 12/17/2022] Open
Abstract
MYC oncogene is a transcription factor with a wide array of functions affecting cellular activities such as cell cycle, apoptosis, DNA damage response, and hematopoiesis. Due to the multi-functionality of MYC, its expression is regulated at multiple levels. Deregulation of this oncogene can give rise to a variety of cancers. In this review, MYC regulation and the mechanisms by which MYC adjusts cellular functions and its implication in hematologic malignancies are summarized. Further, we also discuss potential inhibitors of MYC that could be beneficial for treating hematologic malignancies.
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Affiliation(s)
- Seyed Esmaeil Ahmadi
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Rahimi
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Bahman Zarandi
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Rouzbeh Chegeni
- Medical Laboratory Sciences Program, College of Health and Human Sciences, Northern Illinois University, DeKalb, IL, USA.
| | - Majid Safa
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran.
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
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5
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Xu R, Huang X, Li C, Deng C, Li M, Wu P, Geng S, Lai P, Lu Z, Weng J, Du X. Bone marrow mesenchymal stromal cells in chronic myelomonocytic leukaemia: overactivated WNT/β-catenin signalling by parallel RNA sequencing and dysfunctional phenotypes. Br J Haematol 2021; 193:928-940. [PMID: 33959953 DOI: 10.1111/bjh.17425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 02/24/2021] [Accepted: 02/28/2021] [Indexed: 12/20/2022]
Abstract
Sophisticated cross-talk between bone marrow mesenchymal stromal cells (BM MSCs) and haematopoietic/leukaemic stem cells in patients with myelodysplastic syndromes (MDS) and myeloid leukaemia have been emphasized in previous reports. However, mesenchymal elements in patients with chronic myelomonocytic leukaemia (CMML) were poorly investigated. By utilizing a parallel RNA-sequencing method, we investigated the transcriptional profile and functional defects of primary BM MSCs from patients with CMML for the first time. Within a 24-patient cohort, transcriptional and functional analysis reveals a prominent enrichment of WNT/β-catenin signalling and multiple biology processes. Deregulated expression of WNT/β-catnin factors CTNNB1, CMYC, LEF1, and FRZB is associated with impaired proliferation, senescence phenotype, and abnormal secretion in CMML MSCs. The impaired ability to support healthy CD34+ haematopoietic stem and progenitor cells (HSPCs) correlates with activation of WNT/β-catenin signalling in CMML MSCs. Furthermore, we observed an association between WNT/β-catenin factors and treatment response to hypomethylating agents (HMAs) in a cohort of patients with MDS/myeloproliferative neoplasms (MPNs). Taken together, our study provides evidence for transcriptional and functional abnormalities in CMML MSCs, and suggests potential prognostic value of evaluating WNT/β-catenin signalling in patients with CMML.
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Affiliation(s)
- Ruohao Xu
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Xin Huang
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Chao Li
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Chengxin Deng
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Minming Li
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Ping Wu
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Suxia Geng
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Peilong Lai
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Zesheng Lu
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Jianyu Weng
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
| | - Xin Du
- Department of Hematology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510080, P.R. China
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6
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Chong PSY, Chooi JY, Lim JSL, Toh SHM, Tan TZ, Chng WJ. SMARCA2 Is a Novel Interactor of NSD2 and Regulates Prometastatic PTP4A3 through Chromatin Remodeling in t(4;14) Multiple Myeloma. Cancer Res 2021; 81:2332-2344. [PMID: 33602783 DOI: 10.1158/0008-5472.can-20-2946] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/18/2020] [Accepted: 02/11/2021] [Indexed: 11/16/2022]
Abstract
NSD2 is the primary oncogenic driver in t(4;14) multiple myeloma. Using SILAC-based mass spectrometry, we demonstrate a novel role of NSD2 in chromatin remodeling through its interaction with the SWI/SNF ATPase subunit SMARCA2. SMARCA2 was primarily expressed in t(4;14) myeloma cells, and its interaction with NSD2 was noncanonical and independent of the SWI/SNF complex. RNA sequencing identified PTP4A3 as a downstream target of NSD2 and mapped NSD2-SMARCA2 complex on PTP4A3 promoter. This led to a focal increase in the permissive H3K36me2 mark and transcriptional activation of PTP4A3. High levels of PTP4A3 maintained MYC expression and correlated with a 54-gene MYC signature in t(4;14) multiple myeloma. Importantly, this mechanism was druggable by targeting the bromodomain of SMARCA2 using the specific BET inhibitor PFI-3, leading to the displacement of NSD2 from PTP4A3 promoter and inhibiting t(4;14) myeloma cell viability. In vivo, treatment with PFI-3 reduced the growth of t(4;14) xenograft tumors. Together, our study reveals an interplay between histone-modifying enzymes and chromatin remodelers in the regulation of myeloma-specific genes that can be clinically intervened. SIGNIFICANCE: This study uncovers a novel, SWI/SNF-independent interaction between SMARCA2 and NSD2 that facilitates chromatin remodeling and transcriptional regulation of oncogenes in t(4;14) multiple myeloma, revealing a therapeutic vulnerability targetable by BET inhibition.
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Affiliation(s)
- Phyllis S Y Chong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| | - Jing Yuan Chooi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Julia S L Lim
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Sabrina Hui Min Toh
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Tuan Zea Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Wee-Joo Chng
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. .,Cancer Science Institute of Singapore, National University of Singapore, Singapore.,Department of Heamatology-Oncology, National University Cancer Institute of Singapore, National University Health System, Singapore
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7
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Qian Y, Liang X, Kong P, Cheng Y, Cui H, Yan T, Wang J, Zhang L, Liu Y, Guo S, Cheng X, Cui Y. Elevated DHODH expression promotes cell proliferation via stabilizing β-catenin in esophageal squamous cell carcinoma. Cell Death Dis 2020; 11:862. [PMID: 33060568 PMCID: PMC7566478 DOI: 10.1038/s41419-020-03044-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 09/20/2020] [Accepted: 09/22/2020] [Indexed: 12/24/2022]
Abstract
As a key enzyme in de novo pyrimidine biosynthesis, the expression level of dihydroorotate dehydrogenase (DHODH) has been reported to be elevated in various types of malignant tumors and its tumor-promoting effect was considered to relate to its pyrimidine synthesis function. Here, we revealed one intriguing potential mechanism that DHODH modulated β-catenin signaling in esophageal squamous cell carcinoma (ESCC). We demonstrated that DHODH directly bound to the NH2 terminal of β-catenin, thereby, interrupting the interaction of GSK3β with β-catenin and leading to the abrogation of β-catenin degradation and accumulation of β-catenin in the nucleus, which in turn, resulted in the activation of β-catenin downstream genes, including CCND1, E2F3, Nanog, and OCT4. We further demonstrated that the regulation of β-catenin by DHODH was independent of DHODH catalyzing activity. Univariate and multivariate analyses suggested that DHODH expression might be an independent prognostic factor for ESCC patients. Collectively, our study highlights the pivotal role of DHODH mediated β-catenin signaling and indicates that DHODH may act as a multi-functional switcher from catalyzing pyrimidine metabolism to regulating tumor-related signaling pathways in ESCC.
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Affiliation(s)
- Yu Qian
- Cancer Institute, Peking University Shenzhen Hospital, Shenzhen Peking University-Hong Kong University of Science and Technology (PKU-HKUST) Medical Center, 518035, Shenzhen, People's Republic of China.,Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Xiao Liang
- Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Pengzhou Kong
- Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Yikun Cheng
- Cancer Institute, Peking University Shenzhen Hospital, Shenzhen Peking University-Hong Kong University of Science and Technology (PKU-HKUST) Medical Center, 518035, Shenzhen, People's Republic of China
| | - Heyang Cui
- Cancer Institute, Peking University Shenzhen Hospital, Shenzhen Peking University-Hong Kong University of Science and Technology (PKU-HKUST) Medical Center, 518035, Shenzhen, People's Republic of China.,Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Ting Yan
- Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Jinghao Wang
- Department of Obstetrics & Gynecology, the Second Hospital, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ling Zhang
- Cancer Institute, Peking University Shenzhen Hospital, Shenzhen Peking University-Hong Kong University of Science and Technology (PKU-HKUST) Medical Center, 518035, Shenzhen, People's Republic of China.,Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Yiqian Liu
- Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China
| | - Shiping Guo
- Department of Tumor Surgery, Shanxi Cancer Hospital, Taiyuan, Shanxi, China
| | - Xiaolong Cheng
- Department of Pathology & Shanxi Key Laboratory of Carcinogenesis and Translational Research on Esophageal Cancer, Shanxi Medical University, 030001, Taiyuan, Shanxi, People's Republic of China.
| | - Yongping Cui
- Cancer Institute, Peking University Shenzhen Hospital, Shenzhen Peking University-Hong Kong University of Science and Technology (PKU-HKUST) Medical Center, 518035, Shenzhen, People's Republic of China.
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8
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Ruan Y, Kim HN, Ogana H, Kim YM. Wnt Signaling in Leukemia and Its Bone Marrow Microenvironment. Int J Mol Sci 2020; 21:ijms21176247. [PMID: 32872365 PMCID: PMC7503842 DOI: 10.3390/ijms21176247] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/16/2020] [Accepted: 08/24/2020] [Indexed: 12/19/2022] Open
Abstract
Leukemia is an aggressive hematologic neoplastic disease. Therapy-resistant leukemic stem cells (LSCs) may contribute to the relapse of the disease. LSCs are thought to be protected in the leukemia microenvironment, mainly consisting of mesenchymal stem/stromal cells (MSC), endothelial cells, and osteoblasts. Canonical and noncanonical Wnt pathways play a critical role in the maintenance of normal hematopoietic stem cells (HSC) and LSCs. In this review, we summarize recent findings on the role of Wnt signaling in leukemia and its microenvironment and provide information on the currently available strategies for targeting Wnt signaling.
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Affiliation(s)
- Yongsheng Ruan
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90027, USA; (Y.R.); (H.N.K.); (H.O.)
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Hye Na Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90027, USA; (Y.R.); (H.N.K.); (H.O.)
| | - Heather Ogana
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90027, USA; (Y.R.); (H.N.K.); (H.O.)
| | - Yong-Mi Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90027, USA; (Y.R.); (H.N.K.); (H.O.)
- Correspondence:
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9
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Johansson JA, Marie KL, Lu Y, Brombin A, Santoriello C, Zeng Z, Zich J, Gautier P, von Kriegsheim A, Brunsdon H, Wheeler AP, Dreger M, Houston DR, Dooley CM, Sims AH, Busch-Nentwich EM, Zon LI, Illingworth RS, Patton EE. PRL3-DDX21 Transcriptional Control of Endolysosomal Genes Restricts Melanocyte Stem Cell Differentiation. Dev Cell 2020; 54:317-332.e9. [PMID: 32652076 PMCID: PMC7435699 DOI: 10.1016/j.devcel.2020.06.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/06/2020] [Accepted: 06/09/2020] [Indexed: 01/22/2023]
Abstract
Melanocytes, replenished throughout life by melanocyte stem cells (MSCs), play a critical role in pigmentation and melanoma. Here, we reveal a function for the metastasis-associated phosphatase of regenerating liver 3 (PRL3) in MSC regeneration. We show that PRL3 binds to the RNA helicase DDX21, thereby restricting productive transcription by RNAPII at master transcription factor (MITF)-regulated endolysosomal vesicle genes. In zebrafish, this mechanism controls premature melanoblast expansion and differentiation from MSCs. In melanoma patients, restricted transcription of this endolysosomal vesicle pathway is a hallmark of PRL3-high melanomas. Our work presents the conceptual advance that PRL3-mediated control of transcriptional elongation is a differentiation checkpoint mechanism for activated MSCs and has clinical relevance for the activity of PRL3 in regenerating tissue and cancer.
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Affiliation(s)
- Jeanette A Johansson
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Kerrie L Marie
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK; Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yuting Lu
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Alessandro Brombin
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Cristina Santoriello
- Stem Cell Program and Division of Hematology, Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Medical School, Harvard Stem Cell Institute, Stem Cell and Regenerative Biology Department, Harvard University, Boston, USA
| | - Zhiqiang Zeng
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Judith Zich
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Philippe Gautier
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK
| | - Alex von Kriegsheim
- Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Hannah Brunsdon
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Ann P Wheeler
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK
| | - Marcel Dreger
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Douglas R Houston
- Institute of Quantitative Biology, Biochemistry and Biotechnology, Waddington Building, King's Buildings, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Christopher M Dooley
- Wellcome Sanger Institute, Hinxton CB10 1SA, UK; Max-Planck-Institute for Developmental Biology, Department ECNV, Max-Planck-Ring 5, 72076 Tübingen, Germany
| | - Andrew H Sims
- Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Elisabeth M Busch-Nentwich
- Wellcome Sanger Institute, Hinxton CB10 1SA, UK; Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK
| | - Leonard I Zon
- Stem Cell Program and Division of Hematology, Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Medical School, Harvard Stem Cell Institute, Stem Cell and Regenerative Biology Department, Harvard University, Boston, USA
| | - Robert S Illingworth
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh BioQuarter, 5 Little France Drive, Edinburgh EH16 4UU, UK.
| | - E Elizabeth Patton
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK; Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK.
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10
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Zhang Y, Lee S, Xu W. Miltefosine suppression of Pten null T-ALL leukemia via β-catenin degradation through inhibition of pT308-Akt and TGFβ1/Smad3. Biochem Biophys Res Commun 2020; 524:1018-1024. [PMID: 32063363 DOI: 10.1016/j.bbrc.2020.02.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 02/04/2020] [Indexed: 12/31/2022]
Abstract
Pten deletion in the hematopoietic stem cells (HSC) causes a myeloproliferative disorder, which may subsequently develop into a T-cell acute lymphoblastic leukemia (T-ALL). β-catenin expression was dramatically increased in the c-KitmidCD3+Lin- leukemia stem cells (LSC) and was critical for T-ALL development. Therefore, the inactivation of β-catenin in LSC may have a potential to eliminate the LSC. In this study, we investigated the mechanism of enhancement of the β-catenin expression and subsequently used a drug to inactivate β-catenin expression in T-ALL. Western blot (WB) analysis revealed an increased level of β-catenin in the leukemic cells, but not in the pre-leukemic cells. Furthermore, the WB analysis of the thymic cells from different stages of leukemia development showed that increased expression of β-catenin was not via the pS9-GSK3β signaling, but was dependent on the pT308-Akt activation. Miltefosine (Hexadecylphosphocholine) is the first oral anti-Leishmania drug, which is a phospholipid agent and has been shown to inhibit the PI3K/Akt activity. Treatment of the PtenΔ/Δ leukemic mice with Miltefosine for different durations demonstrated that the pT308-Akt and the β-catenin expressions were inhibited in the leukemia blast cells. Miltefosine treatment also suppressed the TGFβ1/Smad3 signaling pathway. Analysis of TGFβ1 in the sorted subpopulations of the blast cells showed that TGFβ1 was secreted by the CD3+CD4- subpopulation and may exert effects on the subpopulations of both CD3+CD4+ and CD3+CD4- leukemia blast cells. When a TGFβR1 inhibitor, SB431542 was injected into the PtenΔ/Δ leukemic mice, the Smad3 and β-catenin expressions were down-regulated. On the basis of the results, we conclude that Miltefosine can suppress leukemia by degrading β-catenin through repression of the pT308-Akt and TGFβ1/Smad3 signaling pathways. This study demonstrates a possibility to inhibit Pten loss-associated leukemia genesis via targeting Akt and Smad3.
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Affiliation(s)
- Yanmei Zhang
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Sauhar Lee
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Lakeside Campus, Subang Jaya, Selangor, Malaysia
| | - Wei Xu
- ZJU-UoE Institute, Zhejiang University School of Medicine, Zhejiang University, Haining, China.
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11
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Uckun FM, Cogle CR, Lin TL, Qazi S, Trieu VN, Schiller G, Watts JM. A Phase 1B Clinical Study of Combretastatin A1 Diphosphate (OXi4503) and Cytarabine (ARA-C) in Combination (OXA) for Patients with Relapsed or Refractory Acute Myeloid Leukemia. Cancers (Basel) 2019; 12:cancers12010074. [PMID: 31888052 PMCID: PMC7016810 DOI: 10.3390/cancers12010074] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 12/17/2022] Open
Abstract
Combretastatin A1 (OXi4503) is a dual-function drug with vascular disrupting and cytotoxic properties that has exhibited single-agent anti-leukemia activity in murine xenograft models of acute myeloid leukemia (AML) and in a prior Phase 1A clinical study for relapsed/refractory (R/R) AML. The purpose of the present multicenter Phase 1B study was to define the maximum tolerated dose (MTD) and safety profile of OXi4503 and cytarabine (ARA-C) administered in combination (OXA). At four centers, 29 patients with R/R AML or myelodysplastic syndrome (MDS) were treated with OXA. The most common grade 3/4 treatment-emergent adverse events (AEs) were febrile neutropenia (28%), hypertension (17%), thrombocytopenia (17%), and anemia (14%). There were no treatment-emergent grade 5 AEs. Drug-related serious adverse events (SAEs) developed in 4/29 patients (14%) and included febrile neutropenia (N = 2), pneumonia/acute respiratory failure (N = 1), and hypotension (N = 1). 9.76 mg/m2 was defined as the MTD of OXi4503 when administered in combination with 1 g/m2 ARA-C. In 26 evaluable AML patients, there were 2 complete remissions (CR), 2 complete remissions with incomplete count recovery (CRi) and one partial response (PR), for an overall response rate (ORR) of 19%. The median overall survival (OS) time for the four patients who achieved a CR/CRi was 528 days (95% CI: 434-NA), which was significantly longer than the median OS time of 113 days (95% CI: 77-172) for the remaining 22 patients who did not achieve a CR/CRi (Log Rank Chi Square = 11.8, p-value = 0.0006). The safety and early evidence of efficacy of the OXA regimen in R/R AML patients warrant further investigation in a Phase 2 clinical study.
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Affiliation(s)
- Fatih M. Uckun
- Immuno-Oncology Program, Mateon Therapeutics, Agoura Hills, CA 91301, USA
- Ares Pharmaceuticals, St. Paul, MN 55110, USA
- Correspondence:
| | - Christopher R. Cogle
- Division of Hematology and Oncology, Department of Medicine, College of Medicine & University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA
| | - Tara L. Lin
- Division of Hematologic Malignancies and Cellular Therapeutics, Department of Internal Medicine, University of Kansas Medical Center, University of Kansas Cancer Center and Medical Pavillon, Westwood, KS 66205, USA
| | - Sanjive Qazi
- Bioinformatics Program and Department of Biology, Gustavus Adolphus College, St Peter, MN 56082, USA
| | - Vuong N. Trieu
- Immuno-Oncology Program, Mateon Therapeutics, Agoura Hills, CA 91301, USA
| | - Gary Schiller
- Bone Marrow/Stem Cell Transplantation, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Justin M. Watts
- Department of Medicine, Division of Hematology/Oncology Miller School of Medicine, University of Miami Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
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12
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Wnt Signalling in Acute Myeloid Leukaemia. Cells 2019; 8:cells8111403. [PMID: 31703382 PMCID: PMC6912424 DOI: 10.3390/cells8111403] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/31/2019] [Accepted: 11/06/2019] [Indexed: 12/13/2022] Open
Abstract
Acute myeloid leukaemia (AML) is a group of malignant diseases of the haematopoietic system. AML occurs as the result of mutations in haematopoietic stem/progenitor cells, which upregulate Wnt signalling through a variety of mechanisms. Other mechanisms of Wnt activation in AML have been described such as Wnt antagonist inactivation through promoter methylation. Wnt signalling is necessary for the maintenance of leukaemic stem cells. Several molecules involved in or modulating Wnt signalling have a prognostic value in AML. These include: β-catenin, LEF-1, phosphorylated-GSK3β, PSMD2, PPARD, XPNPEP, sFRP2, RUNX1, AXIN2, PCDH17, CXXC5, LLGL1 and PTK7. Targeting Wnt signalling for tumour eradication is an approach that is being explored in haematological and solid tumours. A number of preclinical studies confirms its feasibility, albeit, so far no reliable clinical trial data are available to prove its utility and efficacy.
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13
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Yokota K, Tanaka Y, Harada H, Kaida T, Nakamoto S, Soeno T, Fujiyama Y, Yokota M, Kojo K, Miura H, Yamanashi T, Sato T, Nakamura T, Watanabe M, Yamashita K. WiNTRLINC1/ASCL2/c-Myc Axis Characteristics of Colon Cancer with Differentiated Histology at Young Onset and Essential for Cell Viability. Ann Surg Oncol 2019; 26:4826-4834. [DOI: 10.1245/s10434-019-07780-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Indexed: 12/20/2022]
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14
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Chong PSY, Zhou J, Lim JSL, Hee YT, Chooi JY, Chung TH, Tan ZT, Zeng Q, Waller DD, Sebag M, Chng WJ. IL6 Promotes a STAT3-PRL3 Feedforward Loop via SHP2 Repression in Multiple Myeloma. Cancer Res 2019; 79:4679-4688. [PMID: 31337650 DOI: 10.1158/0008-5472.can-19-0343] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/08/2019] [Accepted: 07/17/2019] [Indexed: 11/16/2022]
Abstract
Overexpression of PRL-3, an oncogenic phosphatase, was identified as a novel cluster in patients with newly diagnosed multiple myeloma. However, the regulation and oncogenic activities of PRL-3 in multiple myeloma warrant further investigation. Here, we report that IL6 activates STAT3, which acts as a direct transcriptional regulator of PRL-3. Upregulation of PRL-3 increased myeloma cell viability and rephosphorylated STAT3 in a biphasic manner through direct interaction and deactivation of SHP2, thus blocking the gp130 (Y759)-mediated repression of STAT3 activity. Abrogation of PRL-3 reduced myeloma cell survival, clonogenicity, and tumorigenesis, and detailed mechanistic studies revealed "deactivation" of effector proteins such as Akt, Erk1/2, Src, STAT1, and STAT3. Furthermore, loss of PRL-3 efficiently abolished nuclear localization of STAT3 and reduced its occupancy on the promoter of target genes c-Myc and Mcl-1, and antiapoptotic genes Bcl2 and Bcl-xL. PRL-3 also played a role in the acquired resistance of myeloma cells to bortezomib, which could be overcome by PRL-3 silencing. Of clinical relevance, STAT3 and PRL-3 expression was positively correlated in five independent cohorts, and the STAT3 activation signature was significantly enriched in patients with high PRL-3 expression. Furthermore, PRL-3 could be used as a biomarker to identify high-risk patients with multiple myeloma that exhibited poor prognosis and inferior outcome even when treated with novel combinational therapeutics (proteasome inhibitors and immunomodulatory imide drugs). Conclusively, our results support a feedforward mechanism between STAT3 and PRL-3 that prolongs prosurvival signaling in multiple myeloma, and suggest targeting PRL-3 as a valid therapeutic opportunity in multiple myeloma. SIGNIFICANCE: IL6 promotes STAT3-dependent transcriptional upregulation of PRL-3, which in turn re-phosphorylates STAT3 and aberrantly activates STAT3 target genes, leading to bortezomib resistance in multiple myeloma.
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Affiliation(s)
- Phyllis S Y Chong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore.
| | - Jianbiao Zhou
- Cancer Science Institute of Singapore, National University of Singapore, Singapore.,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Julia S L Lim
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Yan Ting Hee
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Jing-Yuan Chooi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Tae-Hoon Chung
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Zea Tuan Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Qi Zeng
- Institute of Molecular and Cell Biology, A*STAR, Singapore
| | - Daniel D Waller
- Division of Hematology, Department of Medicine, McGill University Health Center, Montreal, Canada
| | - Michael Sebag
- Division of Hematology, Department of Medicine, McGill University Health Center, Montreal, Canada
| | - Wee-Joo Chng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore. .,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Department of Haematology-Oncology, National University Cancer Institute, Singapore.,National University Health System, Singapore
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15
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Liu YY, Tanikawa C, Ueda K, Matsuda K. INKA2, a novel p53 target that interacts with the serine/threonine kinase PAK4. Int J Oncol 2019; 54:1907-1920. [PMID: 31081062 PMCID: PMC6521941 DOI: 10.3892/ijo.2019.4786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/21/2019] [Indexed: 12/17/2022] Open
Abstract
The p53 protein is a tumour suppressor and transcription factor that regulates the expression of target genes involved in numerous stress responses systems. In this study, we designed a screening strategy using DNA damage-induced mouse and human transcriptome data to identify novel downstream targets of p53. Our method selected genes with an induced expression in multiple organs of X-ray-irradiated p53 wild-type mice. The expression of inka box actin regulator 2 gene, known as Inka2, was upregulated in 12 organs when p53 expression was induced. Similarly, INKA2 was induced in a p53-dependent manner at both the mRNA and protein level in human cells treated with adriamycin. Reporter assays confirmed that p53 directly regulated INKA2 through an intronic binding site. The overexpression of INKA2 produced a slight decrease in cancer cell growth in the colony formation assay. Moreover, the analysis of The Cancer Genome Atlas (TCGA) data revealed a decreased INKA2 expression in tumour samples carrying p53 mutations compared with p53 wild-type samples. In addition, significantly higher levels of DNA methylation were observed in the INKA2 promoter in tumour samples, concordant with the reduced INKA2 expression in tumour tissues. These results demonstrate the potential of INKA2 as a cancer cell growth inhibitor. Furthermore, INKA2 protein interacts with the serine/threonine-protein kinase, p21 (RAC1) activated kinase (PAK)4, which phosphorylates β-catenin to prevent ubiquitin-proteasomal degradation. As β-catenin was downregulated in a stable INKA2-expressing cell line, the findings of this study suggest that INKA2 is a novel, direct downstream target of p53 that potentially decreases cell growth by inhibiting the PAK4-β-catenin pathway.
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Affiliation(s)
- Yu-Yu Liu
- Laboratory of Clinical Genome Sequencing, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo 108‑8639, Tokyo, Japan
| | - Chizu Tanikawa
- Laboratory of Molecular Medicine, Human Genome Center, Institute of Medical Science, The University of Tokyo 108‑8639, Tokyo, Japan
| | - Koji Ueda
- Project for Realization of Personalized Cancer Medicine, Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo 135‑8550, Japan
| | - Koichi Matsuda
- Laboratory of Clinical Genome Sequencing, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo 108‑8639, Tokyo, Japan
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16
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Brenner AK, Aasebø E, Hernandez-Valladares M, Selheim F, Berven F, Grønningsæter IS, Bartaula-Brevik S, Bruserud Ø. The Capacity of Long-Term in Vitro Proliferation of Acute Myeloid Leukemia Cells Supported Only by Exogenous Cytokines Is Associated with a Patient Subset with Adverse Outcome. Cancers (Basel) 2019; 11:cancers11010073. [PMID: 30634713 PMCID: PMC6356272 DOI: 10.3390/cancers11010073] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/28/2018] [Accepted: 01/02/2019] [Indexed: 12/15/2022] Open
Abstract
Acute myeloid leukemia (AML) is an aggressive malignancy, which is highly heterogeneous with regard to chemosensitivity and biological features. The AML cell population is organized in a hierarchy that is reflected in the in vitro growth characteristics, with only a minority of cells being able to proliferate for more than two weeks. In this study, we investigated the ability of AML stem cells to survive and proliferate in suspension cultures in the presence of exogenous mediators but without supporting non-leukemic cells. We saw that a high number of maintained stem cells (i.e., a large number of clonogenic cells after five weeks of culture) was associated with decreased overall survival for patients receiving intensive chemotherapy; this prognostic impact was also detected in the multivariate/adjusted analysis. Furthermore, the patients with many clonogenic cells presented more frequently with mutations in transcription-related genes, and also showed a higher abundance of proteins involved in transcription at the time of diagnosis. In conclusion, the growth characteristics of the long-term proliferating leukemic stem cells seem to have an independent prognostic impact in human AML, and these characteristics appear to be reflected by the mutational landscape and the proteome of the patients at the time of diagnosis.
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Affiliation(s)
- Annette K Brenner
- Department of Medicine, Haukeland University Hospital; 5021 Bergen, Norwa.
- Section for Hematology, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Elise Aasebø
- Section for Hematology, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- The Proteomics Unit at the University of Bergen, Department of Biomedicine, University of Bergen, 5020 Bergen, Norway.
| | - Maria Hernandez-Valladares
- Section for Hematology, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- The Proteomics Unit at the University of Bergen, Department of Biomedicine, University of Bergen, 5020 Bergen, Norway.
| | - Frode Selheim
- The Proteomics Unit at the University of Bergen, Department of Biomedicine, University of Bergen, 5020 Bergen, Norway.
| | - Frode Berven
- The Proteomics Unit at the University of Bergen, Department of Biomedicine, University of Bergen, 5020 Bergen, Norway.
| | - Ida-Sofie Grønningsæter
- Department of Medicine, Haukeland University Hospital; 5021 Bergen, Norwa.
- Section for Hematology, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Sushma Bartaula-Brevik
- Section for Hematology, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Øystein Bruserud
- Department of Medicine, Haukeland University Hospital; 5021 Bergen, Norwa.
- Section for Hematology, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
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