1
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XPO1 intensifies sorafenib resistance by stabilizing acetylation of NPM1 and enhancing epithelial-mesenchymal transition in hepatocellular carcinoma. Biomed Pharmacother 2023; 160:114402. [PMID: 36791564 DOI: 10.1016/j.biopha.2023.114402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Emerging studies have suggested that exportin-1 (XPO1) plays a pivotal role in hepatocellular carcinoma (HCC). However, the underlying mechanism of XPO1 in HCC sorafenib resistance remains enigmatic. The expression of XPO1 in HCC tumor tissues and sorafenib-resistant (SR) cells were analyzed by bioinformatics analysis, immunohistochemistry (IHC) and Western blotting. The interaction mechanism between XPO1 and Nucleophosmin (NPM1) was investigated by immunoprecipitation (IP), Mass-spectrometric (MS) analysis, immunofluorescence colocalization, CRISPR/CAS9 technology and RNA-seq. Analyses were also conducted on KPT-8602 and sorafenib's combined therapeutic effect. Our findings unraveled that the XPO1 overexpression was observed in HCC, and correlated with poorer survival. Knockdown of XPO1 inhibited the migration and proliferation of HCC cells, and also reduced the resistance of HCC cells to sorafenib. Mechanistically, XPO1 interacted with the C-terminus of NPM1 and mediated the acetylation of NPM1 at lysine 54 to maintain sorafenib resistance. XPO1 was bound to Vimentin, resulting in the epithelial-mesenchymal transition (EMT) progression in sorafenib-resistant cells. KPT-8602 in combination with sorafenib suppressed the tumor growth. These results highlighted the therapeutic value of targeting XPO1 in overcoming sorafenib resistance. The combinational treatment of KPT-8602 and sorafenib might be an improved therapeutic option.
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2
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Chen Z, Xin Q, Wei W, Wu Y. The pathogenesis and development of targeted drugs in acute T lymphoblastic leukaemia. Br J Pharmacol 2023; 180:1017-1037. [PMID: 36623836 DOI: 10.1111/bph.16029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Acute lymphoblastic leukaemia (ALL) is mainly classified into acute T- and B-lymphoblastic leukaemia according to the source of its lymphocytes, thymus and bone. Among them, the incidence of adult T-cell accounts for about 25% of adult acute lymphoblastic leukaemia, but the degree of malignancy is high and the treatment rate and prognosis are poor. At this stage, there are few targeted drugs and the commonly used broad-spectrum chemotherapeutic drugs have poor efficacy and many adverse drug reactions. Understanding and investigating the pathogenesis of T-acute lymphoblastic leukaemia is very important for further developing new targeting drugs and improving existing drugs. Dysregulated signalling pathways are the main aetiological factors of T-acute lymphoblastic leukaemia. They play crucial roles in promoting tumour initiation, progression, drug design and therapy responses. This is primarily because signalling pathways are indispensable for many cellular biological processes, including tumour growth, migration, invasion, metastasis and others. As a result, small molecule inhibitors targeting the major kinase components of the signalling pathway have received a lot of attention and have been developed and evaluated in preclinical models and clinical trials. Already marketed drugs are also being repurposed in combination therapies to further improve efficacy and overcome tumour cell resistance. In this review, we have aimed to examine the latest and most classical signalling pathways in the aetiology of T-acute lymphoblastic leukaemia and shed light on potential targets for novel therapeutic agents to act on.
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Affiliation(s)
- Zhaoying Chen
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Anhui Provincial Institute of Translational Medicine, Hefei, China
| | - Qianling Xin
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Anhui Provincial Institute of Translational Medicine, Hefei, China
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Anhui Provincial Institute of Translational Medicine, Hefei, China
| | - Yujing Wu
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Anhui Provincial Institute of Translational Medicine, Hefei, China
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3
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Kwanten B, Deconick T, Walker C, Wang F, Landesman Y, Daelemans D. E3 ubiquitin ligase ASB8 promotes selinexor-induced proteasomal degradation of XPO1. Biomed Pharmacother 2023; 160:114305. [PMID: 36731340 DOI: 10.1016/j.biopha.2023.114305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 02/04/2023] Open
Abstract
Selinexor (KPT-330), a small-molecule inhibitor of exportin-1 (XPO1, CRM1) with potent anticancer activity, has recently been granted FDA approval for treatment of relapsed/refractory multiple myeloma and diffuse large B-cell lymphoma (DLBCL), with a number of additional indications currently under clinical investigation. Since selinexor has often demonstrated synergy when used in combination with other drugs, notably bortezomib and dexamethasone, a more comprehensive approach to uncover new beneficial interactions would be of great value. Moreover, stratifying patients, personalizing therapeutics and improving clinical outcomes requires a better understanding of the genetic vulnerabilities and resistance mechanisms underlying drug response. Here, we used CRISPR-Cas9 loss-of-function chemogenetic screening to identify drug-gene interactions with selinexor in chronic myeloid leukemia, multiple myeloma and DLBCL cell lines. We identified the TGFβ-SMAD4 pathway as an important mediator of resistance to selinexor in multiple myeloma cells. Moreover, higher activity of this pathway correlated with prolonged progression-free survival in multiple myeloma patients treated with selinexor, indicating that the TGFβ-SMAD4 pathway is a potential biomarker predictive of therapeutic outcome. In addition, we identified ASB8 (ankyrin repeat and SOCS box containing 8) as a shared modulator of selinexor sensitivity across all tested cancer types, with both ASB8 knockout and overexpression resulting in selinexor hypersensitivity. Mechanistically, we showed that ASB8 promotes selinexor-induced proteasomal degradation of XPO1. This study provides insight into the genetic factors that influence response to selinexor treatment and could support both the development of predictive biomarkers as well as new drug combinations.
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Affiliation(s)
- Bert Kwanten
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy (Rega Institute), Leuven, Belgium
| | - Tine Deconick
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy (Rega Institute), Leuven, Belgium
| | | | - Feng Wang
- Karyopharm Therapeutics, Newton, MA 02459, USA
| | | | - Dirk Daelemans
- KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy (Rega Institute), Leuven, Belgium.
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4
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Cao X, Jin X, Zhang X, Utsav P, Zhang Y, Guo R, Lu W, Zhao M. Small-Molecule Compounds Boost CAR-T Cell Therapy in Hematological Malignancies. Curr Treat Options Oncol 2023; 24:184-211. [PMID: 36701037 PMCID: PMC9992085 DOI: 10.1007/s11864-023-01049-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2022] [Indexed: 01/27/2023]
Abstract
OPINION STATEMENT Although chimeric antigen receptor T cell immunotherapy has been successfully applied in patients with hematological malignancies, several obstacles still need to be overcome, such as high relapse rates and side effects. Overcoming the limitations of CAR-T cell therapy and boosting the efficacy of CAR-T cell therapy are urgent issues that must be addressed. The exploration of small-molecule compounds in combination with CAR-T cell therapies has achieved promising success in pre-clinical and clinical studies in recent years. Protein kinase inhibitors, demethylating drugs, HDAC inhibitors, PI3K inhibitors, immunomodulatory drugs, Akt inhibitors, mTOR inhibitors, and Bcl-2 inhibitors exhibited potential synergy in combination with CAR-T cell therapy. In this review, we will discuss the recent application of these combination therapies for improved outcomes of CAR-T cell therapy.
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Affiliation(s)
- Xinping Cao
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Xin Jin
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, China
| | - Xiaomei Zhang
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Paudel Utsav
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Yi Zhang
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Ruiting Guo
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Wenyi Lu
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, China.
| | - Mingfeng Zhao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, China.
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5
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Thomas X. T-cell acute lymphoblastic leukemia: promising experimental drugs in clinical development. Expert Opin Investig Drugs 2023; 32:37-52. [PMID: 36541671 DOI: 10.1080/13543784.2023.2161361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Despite advances in treatment approaches in acute lymphoblastic leukemia (ALL), the prognosis of adults with newly diagnosed T-ALL remains poor, as well as that of adults and children with relapsed disease. Novel targeted therapies are therefore needed. AREAS COVERED This review summarizes promising emerging strategies for the treatment of T-ALL. EXPERT OPINION The recent molecular characterization of T-ALL has led to the identification of new therapeutic targets. Small-molecules inhibitors and other targeted therapies have therefore been recently developed and are currently under clinical investigations. Similarly, first studies involving monoclonal antibodies and chimeric antigen receptor (CAR) T cells have shown encouraging results. Improvement of outcome with these novel approaches, eventually combined with current standard chemotherapy, is therefore expected in a near future in T-ALL.
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Affiliation(s)
- Xavier Thomas
- Hospices Civils de Lyon, Department of Clinical Hematology, Centre Hospitalier Lyon-Sud, Pierre Bénite, France
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6
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Aryal S, Zhang Y, Wren S, Li C, Lu R. Molecular regulators of HOXA9 in acute myeloid leukemia. FEBS J 2023; 290:321-339. [PMID: 34743404 DOI: 10.1111/febs.16268] [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: 05/19/2021] [Revised: 09/30/2021] [Accepted: 11/05/2021] [Indexed: 02/05/2023]
Abstract
Dysregulation of the oncogenic transcription factor HOXA9 is a prominent feature for most aggressive acute myeloid leukemia cases and a strong indicator of poor prognosis in patients. Leukemia subtypes with hallmark overexpression of HOXA9 include those carrying MLL gene rearrangements, NPM1c mutations, and other genetic alternations. A growing body of evidence indicates that HOXA9 dysregulation is both sufficient and necessary for leukemic transformation. The HOXA9 mRNA and protein regulation includes multilayered controls by transcription factors (such as CDX2/4 and USF2/1), epigenetic factors (such as MLL-menin-LEDGF, DOT1L, ENL, HBO1, NPM1c-XPO1, and polycomb proteins), microRNAs (such as miR-126 and miR-196b), long noncoding RNAs (such as HOTTIP), three-dimensional chromatin interactions, and post-translational protein modifications. Recently, insights into the dynamic regulation of HOXA9 have led to an advanced understanding of the HOXA9 regulome and provided new cancer therapeutic opportunities, including developing inhibitors targeting DOT1L, menin, and ENL proteins. This review summarizes recent advances in understanding the molecular mechanisms controlling HOXA9 regulation and the pharmacological approaches that target HOXA9 regulators to treat HOXA9-driven acute myeloid leukemia.
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Affiliation(s)
- Sajesan Aryal
- Division of Hematology and Oncology & O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, AL, USA
| | - Yang Zhang
- Department of Tumor Cell Biology & Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Spencer Wren
- Division of Hematology and Oncology & O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, AL, USA
| | - Chunliang Li
- Department of Tumor Cell Biology & Cancer Biology Program/Comprehensive Cancer Center, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Rui Lu
- Division of Hematology and Oncology & O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, AL, USA
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7
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Liu G, Chen T, Zhang X, Ma X, Shi H. Small molecule inhibitors targeting the cancers. MedComm (Beijing) 2022; 3:e181. [PMID: 36254250 PMCID: PMC9560750 DOI: 10.1002/mco2.181] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/23/2022] [Accepted: 08/30/2022] [Indexed: 11/23/2022] Open
Abstract
Compared with traditional therapies, targeted therapy has merits in selectivity, efficacy, and tolerability. Small molecule inhibitors are one of the primary targeted therapies for cancer. Due to their advantages in a wide range of targets, convenient medication, and the ability to penetrate into the central nervous system, many efforts have been devoted to developing more small molecule inhibitors. To date, 88 small molecule inhibitors have been approved by the United States Food and Drug Administration to treat cancers. Despite remarkable progress, small molecule inhibitors in cancer treatment still face many obstacles, such as low response rate, short duration of response, toxicity, biomarkers, and resistance. To better promote the development of small molecule inhibitors targeting cancers, we comprehensively reviewed small molecule inhibitors involved in all the approved agents and pivotal drug candidates in clinical trials arranged by the signaling pathways and the classification of small molecule inhibitors. We discussed lessons learned from the development of these agents, the proper strategies to overcome resistance arising from different mechanisms, and combination therapies concerned with small molecule inhibitors. Through our review, we hoped to provide insights and perspectives for the research and development of small molecule inhibitors in cancer treatment.
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Affiliation(s)
- Gui‐Hong Liu
- Department of BiotherapyState Key Laboratory of BiotherapyCancer Center, West China HospitalSichuan UniversityChengduChina
| | - Tao Chen
- Department of CardiologyThe First Affiliated Hospital of China Medical UniversityShenyangLiaoningChina
| | - Xin Zhang
- Department of BiotherapyState Key Laboratory of BiotherapyCancer Center, West China HospitalSichuan UniversityChengduChina
| | - Xue‐Lei Ma
- Department of BiotherapyState Key Laboratory of BiotherapyCancer Center, West China HospitalSichuan UniversityChengduChina
| | - Hua‐Shan Shi
- Department of BiotherapyState Key Laboratory of BiotherapyCancer Center, West China HospitalSichuan UniversityChengduChina
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8
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English KG, Reid AL, Samani A, Coulis GJF, Villalta SA, Walker CJ, Tamir S, Alexander MS. Next-Generation SINE Compound KPT-8602 Ameliorates Dystrophic Pathology in Zebrafish and Mouse Models of DMD. Biomedicines 2022; 10:biomedicines10102400. [PMID: 36289662 PMCID: PMC9598711 DOI: 10.3390/biomedicines10102400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/15/2022] [Accepted: 09/20/2022] [Indexed: 11/25/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a progressive, X-linked childhood neuromuscular disorder that results from loss-of-function mutations in the DYSTROPHIN gene. DMD patients exhibit muscle necrosis, cardiomyopathy, respiratory failure, and loss of ambulation. One of the major driving forces of DMD disease pathology is chronic inflammation. The current DMD standard of care is corticosteroids; however, there are serious side effects with long-term use, thus identifying novel anti-inflammatory and anti-fibrotic treatments for DMD is of high priority. We investigated the next-generation SINE compound, KPT-8602 (eltanexor) as an oral therapeutic to alleviate dystrophic symptoms. We performed pre-clinical evaluation of the effects of KPT-8602 in DMD zebrafish (sapje) and mouse (D2-mdx) models. KPT-8602 improved dystrophic skeletal muscle pathologies, muscle architecture and integrity, and overall outcomes in both animal models. KPT-8602 treatment ameliorated DMD pathology in D2-mdx mice, with increased locomotor behavior and improved muscle histology. KPT-8602 altered the immunological profile of the dystrophic mice, and reduced circulating osteopontin serum levels. These findings demonstrate KPT-8602 as an effective therapeutic in DMD through by promotion of an anti-inflammatory environment and overall improvement of DMD pathological outcomes.
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Affiliation(s)
- Katherine G. English
- Department of Pediatrics, Division of Neurology at Children’s of Alabama the University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Andrea L. Reid
- Department of Pediatrics, Division of Neurology at Children’s of Alabama the University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Adrienne Samani
- Department of Pediatrics, Division of Neurology at Children’s of Alabama the University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Gerald J. F. Coulis
- Department of Physiology and Biophysics, University of California-Irvine, Irvine, CA 92697, USA
- Institute for Immunology, University of California-Irvine, Irvine, CA 92967, USA
| | - S. Armando Villalta
- Department of Physiology and Biophysics, University of California-Irvine, Irvine, CA 92697, USA
- Institute for Immunology, University of California-Irvine, Irvine, CA 92967, USA
| | | | | | - Matthew S. Alexander
- Department of Pediatrics, Division of Neurology at Children’s of Alabama the University of Alabama at Birmingham, Birmingham, AL 35233, USA
- UAB Center for Exercise Medicine (UCEM), Birmingham, AL 35205, USA
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35233, USA
- UAB Civitan International Research Center (CIRC), Birmingham, AL 35233, USA
- UAB Center for Neurodegeneration and Experimental Therapeutics (CNET), Birmingham, AL 35294, USA
- Correspondence:
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9
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Shen Z, Zhuang W, Li K, Guo Y, Qu B, Chen S, Gao J, Liu J, Xu L, Dong X, Che J, Li Q. Identification of Novel Covalent XPO1 Inhibitors Based on a Hybrid Virtual Screening Strategy. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082543. [PMID: 35458742 PMCID: PMC9024667 DOI: 10.3390/molecules27082543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 11/20/2022]
Abstract
Nuclear export protein 1 (XPO1), a member of the nuclear export protein-p (Karyopherin-P) superfamily, regulates the transport of “cargo” proteins. To facilitate this important process, which is essential for cellular homeostasis, XPO1 must first recognize and bind the cargo proteins. To inhibit this process, small molecule inhibitors have been designed that inhibit XPO1 activity through covalent binding. However, the scaffolds for these inhibitors are very limited. While virtual screening may be used to expand the diversity of the XPO1 inhibitor skeleton, enormous computational resources would be required to accomplish this using traditional screening methods. In the present study, we report the development of a hybrid virtual screening workflow and its application in XPO1 covalent inhibitor screening. After screening, several promising XPO1 covalent molecules were obtained. Of these, compound 8 performed well in both tumor cell proliferation assays and a nuclear export inhibition assay. In addition, molecular dynamics simulations were performed to provide information on the mode of interaction of compound 8 with XPO1. This research has identified a promising new scaffold for XPO1 inhibitors, and it demonstrates an effective and resource-saving workflow for identifying new covalent inhibitors.
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Affiliation(s)
- Zheyuan Shen
- Department of Urology, Rui’an People’s Hospital, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China;
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China; (S.C.); (J.G.); (X.D.)
| | - Weihao Zhuang
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Kang Li
- Jiangsu Hengrui Pharmaceuticals Co., Ltd., Shanghai 222000, China;
| | - Yu Guo
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Bingxue Qu
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Sikang Chen
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China; (S.C.); (J.G.); (X.D.)
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Jian Gao
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China; (S.C.); (J.G.); (X.D.)
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Jing Liu
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Lei Xu
- Institute of Bioinformatics and Medical Engineering, School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou 213001, China;
| | - Xiaowu Dong
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China; (S.C.); (J.G.); (X.D.)
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
| | - Jinxin Che
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China; (S.C.); (J.G.); (X.D.)
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; (W.Z.); (Y.G.); (B.Q.); (J.L.)
- Correspondence: (J.C.); (Q.L.)
| | - Qimeng Li
- Department of Urology, Rui’an People’s Hospital, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China;
- Correspondence: (J.C.); (Q.L.)
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10
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Cornell RF, Baz R, Richter JR, Rossi A, Vogl DT, Chen C, Shustik C, Alvarez MJ, Shen Y, Unger TJ, Ben-Shahar O, Wang H, Baloglu E, Senapedis W, Ma X, Landesman Y, Bai X, Bader J, Xu H, Marshall T, Chang H, Walker CJ, Shah J, Shacham S, Kauffman MG, Hofmeister CC. A phase 1 clinical trial of oral eltanexor in patients with relapsed or refractory multiple myeloma. Am J Hematol 2022; 97:E54-E58. [PMID: 34817872 DOI: 10.1002/ajh.26420] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/29/2021] [Accepted: 11/16/2021] [Indexed: 11/11/2022]
Affiliation(s)
| | - Rachid Baz
- Moffitt Cancer Center, Tampa, Florida, USA
| | - Joshua R Richter
- Hackensack University John Theurer Cancer Center, Hackensack, New Jersey, USA
| | - Adriana Rossi
- Weill Cornell Medical College Myeloma Center, New York, New York, USA
| | - Dan T Vogl
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Christine Chen
- UHN Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Chaim Shustik
- McGill University Health Centre, Montreal, Quebec, Canada
| | | | - Yao Shen
- DarwinHealth Inc., New York, New York, USA
| | - T J Unger
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | | | - Hongwei Wang
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | - Erkan Baloglu
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | | | - Xiwen Ma
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | | | - Xiang Bai
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | - Justin Bader
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | - Hongmei Xu
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | | | - Hua Chang
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
| | | | - Jatin Shah
- Karyopharm Therapeutics Inc, Newton, Massachusetts, USA
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11
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Galinski B, Alexander TB, Mitchell DA, Chatwin HV, Awah C, Green AL, Weiser DA. Therapeutic Targeting of Exportin-1 in Childhood Cancer. Cancers (Basel) 2021; 13:6161. [PMID: 34944778 PMCID: PMC8699059 DOI: 10.3390/cancers13246161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/16/2021] [Accepted: 12/01/2021] [Indexed: 01/24/2023] Open
Abstract
Overexpression of Exportin-1 (XPO1), a key regulator of nuclear-to-cytoplasmic transport, is associated with inferior patient outcomes across a range of adult malignancies. Targeting XPO1 with selinexor has demonstrated promising results in clinical trials, leading to FDA approval of its use for multiple relapsed/refractory cancers. However, XPO1 biology and selinexor sensitivity in childhood cancer is only recently being explored. In this review, we will focus on the differential biology of childhood and adult cancers as it relates to XPO1 and key cargo proteins. We will further explore the current state of pre-clinical and clinical development of XPO1 inhibitors in childhood cancers. Finally, we will outline potentially promising future therapeutic strategies for, as well as potential challenges to, integrating XPO1 inhibition to improve outcomes for children with cancer.
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Affiliation(s)
- Basia Galinski
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.G.); (D.A.M.); (C.A.)
| | - Thomas B. Alexander
- Department of Pediatrics, University of North Carolina, Chapel Hill, NC 27599, USA;
| | - Daniel A. Mitchell
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.G.); (D.A.M.); (C.A.)
| | - Hannah V. Chatwin
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, University of Colorado School of Medicine, Aurora, CO 80045, USA;
| | - Chidiebere Awah
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.G.); (D.A.M.); (C.A.)
| | - Adam L. Green
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, University of Colorado School of Medicine, Aurora, CO 80045, USA;
| | - Daniel A. Weiser
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.G.); (D.A.M.); (C.A.)
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12
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Bigas A, Rodriguez-Sevilla JJ, Espinosa L, Gallardo F. Recent advances in T-cell lymphoid neoplasms. Exp Hematol 2021; 106:3-18. [PMID: 34879258 DOI: 10.1016/j.exphem.2021.12.191] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 12/14/2022]
Abstract
T Cells comprise many subtypes of specified lymphocytes, and their differentiation and function take place in different tissues. This cellular diversity is also observed in the multiple ways T-cell transformation gives rise to a variety of T-cell neoplasms. This review covers the main types of T-cell malignancies and their specific characteristics, emphasizing recent advances at the cellular and molecular levels as well as differences and commonalities among them.
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Affiliation(s)
- Anna Bigas
- Program in Cancer Research, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), CIBERONC, Barcelona, Spain; Institut Josep Carreras contra la Leucemia, Barcelona, Spain.
| | | | - Lluis Espinosa
- Program in Cancer Research, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), CIBERONC, Barcelona, Spain
| | - Fernando Gallardo
- Dermatology Department, Parc de Salut Mar-Hospital del Mar, Barcelona, Spain.
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Passirani C, Vessières A, La Regina G, Link W, Silvestri R. Modulating undruggable targets to overcome cancer therapy resistance. Drug Resist Updat 2021; 60:100788. [DOI: 10.1016/j.drup.2021.100788] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 11/03/2022]
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Pearson JD, Huang K, Pacal M, McCurdy SR, Lu S, Aubry A, Yu T, Wadosky KM, Zhang L, Wang T, Gregorieff A, Ahmad M, Dimaras H, Langille E, Cole SPC, Monnier PP, Lok BH, Tsao MS, Akeno N, Schramek D, Wikenheiser-Brokamp KA, Knudsen ES, Witkiewicz AK, Wrana JL, Goodrich DW, Bremner R. Binary pan-cancer classes with distinct vulnerabilities defined by pro- or anti-cancer YAP/TEAD activity. Cancer Cell 2021; 39:1115-1134.e12. [PMID: 34270926 PMCID: PMC8981970 DOI: 10.1016/j.ccell.2021.06.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/17/2020] [Accepted: 06/24/2021] [Indexed: 12/13/2022]
Abstract
Cancer heterogeneity impacts therapeutic response, driving efforts to discover over-arching rules that supersede variability. Here, we define pan-cancer binary classes based on distinct expression of YAP and YAP-responsive adhesion regulators. Combining informatics with in vivo and in vitro gain- and loss-of-function studies across multiple murine and human tumor types, we show that opposite pro- or anti-cancer YAP activity functionally defines binary YAPon or YAPoff cancer classes that express or silence YAP, respectively. YAPoff solid cancers are neural/neuroendocrine and frequently RB1-/-, such as retinoblastoma, small cell lung cancer, and neuroendocrine prostate cancer. YAP silencing is intrinsic to the cell of origin, or acquired with lineage switching and drug resistance. The binary cancer groups exhibit distinct YAP-dependent adhesive behavior and pharmaceutical vulnerabilities, underscoring clinical relevance. Mechanistically, distinct YAP/TEAD enhancers in YAPoff or YAPon cancers deploy anti-cancer integrin or pro-cancer proliferative programs, respectively. YAP is thus pivotal across cancer, but in opposite ways, with therapeutic implications.
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Affiliation(s)
- Joel D Pearson
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Katherine Huang
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Marek Pacal
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Sean R McCurdy
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Suying Lu
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Arthur Aubry
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Tao Yu
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Kristine M Wadosky
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Letian Zhang
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Tao Wang
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Alex Gregorieff
- Department of Pathology, McGill University and Cancer Research Program, Research Institute of the McGill University Health Centre, Montreal, ON H4A 3J1, Canada
| | - Mohammad Ahmad
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Helen Dimaras
- Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; The Department of Ophthalmology & Vision Sciences, Child Health Evaluative Sciences Program, and Center for Global Child Health, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Division of Clinical Public Health, Dalla Lana School of Public Health, The University of Toronto, Toronto, ON M5T 3M7, Canada
| | - Ellen Langille
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Susan P C Cole
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, Kingston, ON K7L 3N6, Canada
| | - Philippe P Monnier
- Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Krembil Research Institute, Vision Division, Krembil Discovery Tower, Toronto, ON M5T 2S8, Canada; Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Benjamin H Lok
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; Department of Radiation Oncology, University of Toronto, Toronto, ON M5T 1P5, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Ming-Sound Tsao
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Nagako Akeno
- Division of Pathology & Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Daniel Schramek
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Kathryn A Wikenheiser-Brokamp
- Division of Pathology & Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; The Perinatal Institute Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Department of Pathology & Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Erik S Knudsen
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Agnieszka K Witkiewicz
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Jeffrey L Wrana
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - David W Goodrich
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Rod Bremner
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada.
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Govaerts I, Prieto C, Vandersmissen C, Gielen O, Jacobs K, Provost S, Nittner D, Maertens J, Boeckx N, De Keersmaecker K, Segers H, Cools J. PSEN1-selective gamma-secretase inhibition in combination with kinase or XPO-1 inhibitors effectively targets T cell acute lymphoblastic leukemia. J Hematol Oncol 2021; 14:97. [PMID: 34167562 PMCID: PMC8223323 DOI: 10.1186/s13045-021-01114-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 06/15/2021] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND T cell acute lymphoblastic leukemia (T-ALL) is a high-risk subtype that comprises 10-15% of childhood and 20-25% of adult ALL cases. Over 70% of T-ALL patients harbor activating mutations in the NOTCH1 signaling pathway and are predicted to be sensitive to gamma-secretase inhibitors. We have recently demonstrated that selective inhibition of PSEN1-containing gamma-secretase complexes can overcome the dose-limiting toxicity associated with broad gamma-secretase inhibitors. In this study, we developed combination treatment strategies with the PSEN1-selective gamma-secretase inhibitor MRK-560 and other targeted agents (kinase inhibitors ruxolitinib and imatinib; XPO-1 inhibitor KPT-8602/eltanexor) for the treatment of T-ALL. METHODS We treated T-ALL cell lines in vitro and T-ALL patient-derived xenograft (PDX) models in vivo with MRK-560 alone or in combination with other targeted inhibitors (ruxolitinib, imatinib or KPT-8602/eltanexor). We determined effects on proliferation of the cell lines and leukemia development and survival in the PDX models. RESULTS All NOTCH1-signaling-dependent T-ALL cell lines were sensitive to MRK-560 and its combination with ruxolitinib or imatinib in JAK1- or ABL1-dependent cell lines synergistically inhibited leukemia proliferation. We also observed strong synergy between MRK-560 and KPT-8602 (eltanexor) in all NOTCH1-dependent T-ALL cell lines. Such synergy was also observed in vivo in a variety of T-ALL PDX models with NOTCH1 or FBXW7 mutations. Combination treatment significantly reduced leukemic infiltration in vivo and resulted in a survival benefit when compared to single treatment groups. We did not observe weight loss or goblet cell hyperplasia in single drug or combination treated mice when compared to control. CONCLUSIONS These data demonstrate that the antileukemic effect of PSEN1-selective gamma-secretase inhibition can be synergistically enhanced by the addition of other targeted inhibitors. The combination of MRK-560 with KPT-8602 is a highly effective treatment combination, which circumvents the need for the identification of additional mutations and provides a clear survival benefit in vivo. These promising preclinical data warrant further development of combination treatment strategies for T-ALL based on PSEN1-selective gamma-secretase inhibition.
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Affiliation(s)
- Inge Govaerts
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
| | - Cristina Prieto
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
| | - Charlien Vandersmissen
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
| | - Olga Gielen
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
| | - Kris Jacobs
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
| | - Sarah Provost
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
| | | | - Johan Maertens
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
- Department of Hematology, UZ Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Nancy Boeckx
- Department of Laboratory Medicine, UZ Leuven, Leuven, Belgium
- Department of Oncology, KU Leuven, Leuven, Belgium
| | - Kim De Keersmaecker
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
- Department of Oncology, KU Leuven, Leuven, Belgium
| | - Heidi Segers
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium
- Department of Oncology, KU Leuven, Leuven, Belgium
- Department of Pediatric Oncology, UZ Leuven, Leuven, Belgium
| | - Jan Cools
- Center for Human Genetics, KU Leuven, Leuven, Belgium.
- Center for Cancer Biology, VIB, Leuven, Belgium.
- Leuvens Kanker Instituut (LKI), KU Leuven - UZ Leuven, Leuven, Belgium.
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Niu YN, Zeng Y, Zhong FF, Long SL, Ren DW, Qin X, Liu WJ. Salidroside overcomes dexamethasone resistance in T-acute lymphoblastic leukemia cells. Exp Ther Med 2021; 21:636. [PMID: 33968167 PMCID: PMC8097222 DOI: 10.3892/etm.2021.10068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 03/19/2021] [Indexed: 01/18/2023] Open
Abstract
The aim of the present study was to analyze whether the use of salidroside (SAL) could overcome dexamethasone (DEX) resistance in T-acute lymphocytic leukemia cells. The human T-ALL DEX-resistant cell line, CEM-C1 and the DEX-sensitive cell line, CEM-C7 were used in the current study. The proliferation inhibition rates in these cells, treated with SAL and DEX alone, and in combination were detected using a Cell Counting Kit-8 assay, while the morphological changes of the cells were observed using an inverted microscope. Reverse transcription-quantitative PCR was used to detect the mRNA expression levels of the c-Myc and LC3 genes, while flow cytometry was used to detect the cell cycle distribution and the rate of apoptosis. In addition, western blot analysis was used to detect the protein expression levels of c-Myc, BCL-2, Bax, cleaved PARP and LC3. and acridine orange staining was used to detect the changes in acidic autophagy vesicles. It was found that SAL could effectively inhibit cell proliferation and induce apoptosis in the CEM-C1 and CEM-C7 cells. In addition, SAL promoted the induction of autophagy. The protein expression levels of c-Myc in the CEM-C1 cells were significantly higher compared with that in the CEM-C7 cells. SAL downregulated the mRNA expression levels of the c-Myc gene and protein in a dose-dependent manner. This suggested that SAL could inhibit the proliferation of the CEM-C1 and CEM-C7 cells, induce apoptosis and autophagy and overcome DEX resistance in the CEM-C1 cells. The mechanism may be associated with the downregulation of c-Myc.
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Affiliation(s)
- Ya-Na Niu
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
| | - Yan Zeng
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
| | - Fang-Fang Zhong
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
| | - Si-Li Long
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
| | - Dan-Wei Ren
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
| | - Xiang Qin
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
| | - Wen-Jun Liu
- Department of Pediatric Hematology, The Affiliated Hospital of Southwest Medical University and Birth Defects Clinical Medical Research Center of Sichuan Province, Luzhou, Sichuan 646000, P.R. China
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JAK3 Is Expressed in the Nucleus of Malignant T Cells in Cutaneous T Cell Lymphoma (CTCL). Cancers (Basel) 2021; 13:cancers13020280. [PMID: 33466582 PMCID: PMC7828698 DOI: 10.3390/cancers13020280] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/19/2020] [Accepted: 01/11/2021] [Indexed: 12/15/2022] Open
Abstract
Simple Summary JAK3 plays an important role in the pathogenesis of cutaneous T cell lymphoma. JAK3 belongs to the Janus kinase family of receptor-associated tyrosine kinases located in cytoplasm adjacent to the plasma membrane. In this study, we show that JAK3 can also be ectopically expressed in the nucleus in CTCL cell lines and primary cells from CTCL patients. Importantly, JAK3 interacts with the nuclear protein RNA polymerase II and phosphorylates Histone H3. Thus, our data provide first evidence for nuclear expression of JAK3 and interactions with key nuclear proteins in malignant T cells suggesting a novel non-canonical role in CTCL. Abstract Perturbation in JAK-STAT signaling has been reported in the pathogenesis of cutaneous T cell lymphoma (CTCL). JAK3 is predominantly associated with the intra-cytoplasmic part of IL-2Rγc located in the plasma membrane of hematopoietic cells. Here we demonstrate that JAK3 is also ectopically expressed in the nucleus of malignant T cells. We detected nuclear JAK3 in various CTCL cell lines and primary malignant T cells from patients with Sézary syndrome, a leukemic variant of CTCL. Nuclear localization of JAK3 was independent of its kinase activity whereas STAT3 had a modest effect on nuclear JAK3 expression. Moreover, JAK3 nuclear localization was only weakly affected by blockage of nuclear export. An inhibitor of the nuclear export protein CRM1, Leptomycin B, induced an increased expression of SOCS3 in the nucleus, but only a weak increase in nuclear JAK3. Importantly, immunoprecipitation experiments indicated that JAK3 interacts with the nuclear protein POLR2A, the catalytic subunit of RNA Polymerase II. Kinase assays showed tyrosine phosphorylation of recombinant human Histone H3 by JAK3 in vitro—an effect which was blocked by the JAK inhibitor (Tofacitinib citrate). In conclusion, we provide the first evidence of nuclear localization of JAK3 in malignant T cells. Our findings suggest that JAK3 may have a cytokine-receptor independent function in the nucleus of malignant T cells, and thus a novel non-canonical role in CTCL.
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Cordo' V, van der Zwet JC, Canté-Barrett K, Pieters R, Meijerink JP. T-cell Acute Lymphoblastic Leukemia: A Roadmap to Targeted Therapies. Blood Cancer Discov 2021; 2:19-31. [PMID: 34661151 PMCID: PMC8447273 DOI: 10.1158/2643-3230.bcd-20-0093] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 10/08/2020] [Accepted: 10/28/2020] [Indexed: 11/16/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic malignancy characterized by aberrant proliferation of immature thymocytes. Despite an overall survival of 80% in the pediatric setting, 20% of patients with T-ALL ultimately die from relapsed or refractory disease. Therefore, there is an urgent need for novel therapies. Molecular genetic analyses and sequencing studies have led to the identification of recurrent T-ALL genetic drivers. This review summarizes the main genetic drivers and targetable lesions of T-ALL and gives a comprehensive overview of the novel treatments for patients with T-ALL that are currently under clinical investigation or that are emerging from preclinical research. SIGNIFICANCE T-ALL is driven by oncogenic transcription factors that act along with secondary acquired mutations. These lesions, together with active signaling pathways, may be targeted by therapeutic agents. Bridging research and clinical practice can accelerate the testing of novel treatments in clinical trials, offering an opportunity for patients with poor outcome.
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