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Ma J, Liu YC, Voss RK, Ma J, Palagani A, Caldwell E, Rosikiewicz W, Cardenas M, Foy S, Umeda M, Wilkinson MR, Inaba H, Klco JM, Rubnitz JE, Wang L. Genomic and global gene expression profiling in pediatric and young adult acute leukemia with PICALM::MLLT10 Fusion. Leukemia 2024; 38:981-990. [PMID: 38429501 DOI: 10.1038/s41375-024-02194-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 03/03/2024]
Abstract
PICALM MLLT10 fusion is a rare but recurrent genetic driver in acute leukemias. To better understand the genomic landscape of PICALM::MLLT10 (PM) positive acute leukemia, we performed genomic profiling and gene expression profiling in twenty PM-positive patients, including AML (n = 10), T-ALL/LLy (n = 8), Mixed-phenotype acute leukemia (MPAL), T/B (n = 1) and acute undifferentiated leukemia (AUL) (n = 1). Besides confirming the known activation of HOXA, differential gene expression analysis compared to hematopoietic stem cells demonstrated the enrichment of genes associated with cell proliferation-related pathways and relatively high expression of XPO1 in PM-AML and PM-T-ALL/LLy. Our study also suggested PHF6 disruption as a key cooperating event in PICALM::MLLT10-positive leukemias. In addition, we demonstrated differences in gene expression profiles as well as remarkably different spectra of co-occurring mutations between PM-AML and PM-T-ALL/LLy. Alterations affecting TP53 and NF1, hallmarks of PM-AML, are strongly associated with disease progression and relapse, whereas EZH2 alterations are highly enriched in PM-T-ALL/LLy. This comprehensive genomic and transcriptomic profiling provides insights into the pathogenesis and development of PICALM::MLLT10 positive acute leukemia.
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Affiliation(s)
- Jingqun Ma
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Yen-Chun Liu
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Rebecca K Voss
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jing Ma
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Ajay Palagani
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Elizabeth Caldwell
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Wojciech Rosikiewicz
- Center for Applied Bioinformatics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Maria Cardenas
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Scott Foy
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Masayuki Umeda
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Mark R Wilkinson
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Hiroto Inaba
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jeffery M Klco
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jeffrey E Rubnitz
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Lu Wang
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA.
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2
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Ngo LH, Bert AG, Dredge BK, Williams T, Murphy V, Li W, Hamilton WB, Carey KT, Toubia J, Pillman KA, Liu D, Desogus J, Chao JA, Deans AJ, Goodall GJ, Wickramasinghe VO. Nuclear export of circular RNA. Nature 2024; 627:212-220. [PMID: 38355801 DOI: 10.1038/s41586-024-07060-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
Circular RNAs (circRNAs), which are increasingly being implicated in a variety of functions in normal and cancerous cells1-5, are formed by back-splicing of precursor mRNAs in the nucleus6-10. circRNAs are predominantly localized in the cytoplasm, indicating that they must be exported from the nucleus. Here we identify a pathway that is specific for the nuclear export of circular RNA. This pathway requires Ran-GTP, exportin-2 and IGF2BP1. Enhancing the nuclear Ran-GTP gradient by depletion or chemical inhibition of the major protein exporter CRM1 selectively increases the nuclear export of circRNAs, while reducing the nuclear Ran-GTP gradient selectively blocks circRNA export. Depletion or knockout of exportin-2 specifically inhibits nuclear export of circRNA. Analysis of nuclear circRNA-binding proteins reveals that interaction between IGF2BP1 and circRNA is enhanced by Ran-GTP. The formation of circRNA export complexes in the nucleus is promoted by Ran-GTP through its interactions with exportin-2, circRNA and IGF2BP1. Our findings demonstrate that adaptors such as IGF2BP1 that bind directly to circular RNAs recruit Ran-GTP and exportin-2 to export circRNAs in a mechanism that is analogous to protein export, rather than mRNA export.
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Affiliation(s)
- Linh H Ngo
- RNA Biology and Cancer Laboratory, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Andrew G Bert
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
| | - B Kate Dredge
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
- Adelaide Centre for Epigenetics, School of Biomedicine, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia
- South Australian immunoGENomics Cancer Institute (SAiGENCI), Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Tobias Williams
- RNA Biology and Cancer Laboratory, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Vincent Murphy
- Genome Stability Unit, St Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia
| | - Wanqiu Li
- RNA Biology and Cancer Laboratory, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
- Department of Pharmacology, Joint Laboratory of Guangdong-Hong Kong Universities for Vascular Homeostasis and Diseases, School of Medicine and Institute for Biological Electron Microscopy, Southern University of Science and Technology, Shenzhen, China
| | - William B Hamilton
- RNA Biology and Cancer Laboratory, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Kirstyn T Carey
- RNA Biology and Cancer Laboratory, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - John Toubia
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
| | - Katherine A Pillman
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
- Department of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia, Australia
| | - Dawei Liu
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia
| | - Jessica Desogus
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Jeffrey A Chao
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Andrew J Deans
- Genome Stability Unit, St Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia
| | - Gregory J Goodall
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, South Australia, Australia.
- Department of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia, Australia.
- Department of Medicine, University of Adelaide, Adelaide, South Australia, Australia.
| | - Vihandha O Wickramasinghe
- RNA Biology and Cancer Laboratory, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, Australia.
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3
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Al-Antary ET, Gupte A, Ravindranath Y. Targeted Therapies in Pediatric Acute Myeloid Leukemia - Evolving Therapeutic Landscape. Indian J Pediatr 2024; 91:176-183. [PMID: 37450248 DOI: 10.1007/s12098-023-04741-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023]
Abstract
Acute myeloid leukemia (AML) accounts for 25% of all leukemia diagnosis and is characterized by distinct cytogenetic and molecular profile. Advances in the understanding of the causative driver mutations, risk-based therapy and better supportive care have led to an overall improvement in survival with frontline therapy. Despite these improvements, a significant number fail either because of primary refractory disease to the conventional 7+3 combination of anthracyclines and cytosine arabinoside (Cytarabine; Ara-C) or experience relapse post remission. Salvage therapy is complicated by the cardiotoxicity driven limitations on the reuse of anthracyclines and development of resistance to cytarabine. In this chapter authors will review the recent studies with targeted agents for refractory AML including targets for immunotherapeutic strategies.
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Affiliation(s)
- Eman T Al-Antary
- Division of Hematology/Oncology, Children's Hospital of Michigan, Pediatric Blood and Marrow Transplantation Program, Barbara Ann Karmanos Cancer Center, Detroit, MI, USA.
- Department of Pediatrics, Central Michigan University College of Medicine, Mt Clemons, MI, USA.
| | - Avanti Gupte
- Division of Hematology/Oncology, Children's Hospital of Michigan, Pediatric Blood and Marrow Transplantation Program, Barbara Ann Karmanos Cancer Center, Detroit, MI, USA
- Department of Pediatrics, Central Michigan University College of Medicine, Mt Clemons, MI, USA
| | - Yaddanapudi Ravindranath
- Division of Hematology/Oncology, Children's Hospital of Michigan, Pediatric Blood and Marrow Transplantation Program, Barbara Ann Karmanos Cancer Center, Detroit, MI, USA
- Department of Pediatrics, School of Medicine, Wayne State University, Detroit, MI, USA
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4
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Bhatnagar B, Zhao Q, Mims AS, Vasu S, Behbehani GK, Larkin K, Blachly JS, Badawi MA, Hill KL, Dzwigalski KR, Phelps MA, Blum W, Klisovic RB, Ruppert AS, Ranganathan P, Walker AR, Garzon R. Phase 1 study of selinexor in combination with salvage chemotherapy in Adults with relapsed or refractory Acute myeloid leukemia. Leuk Lymphoma 2023; 64:2091-2100. [PMID: 37665178 DOI: 10.1080/10428194.2023.2253480] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/05/2023]
Abstract
Selinexor, an oral inhibitor of the nuclear transport protein Exportin-1, shows promising single-agent activity in clinical trials of relapsed/refractory (R/R) acute myeloid leukemia (AML) and preclinical synergy with topoisomerase (topo) IIα inhibitors. We conducted a phase 1, dose-escalation study of selinexor with mitoxantrone, etoposide, and cytarabine (MEC) in 23 patients aged < 60 years with R/R AML. Due to dose-limiting hyponatremia in 2 patients on dose level 2 (selinexor 40 mg/m2), the maximum tolerated dose was 30 mg/m2. The most common grade ≥ 3 treatment-related non-hematologic toxicities were febrile neutropenia, catheter-related infections, diarrhea, hyponatremia, and sepsis. The overall response rate was 43% with 6 patients (26%) achieving complete remission (CR), 2 (9%) with CR with incomplete count recovery, and 2 (9%) with a morphologic leukemia-free state. Seven of 10 responders proceeded to allogeneic stem cell transplantation. The combination of selinexor with MEC is a feasibile treatment option for patients with R/R AML.
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Affiliation(s)
- Bhavana Bhatnagar
- Division of Hematology and Medical Oncology, West Virginia University Cancer Institute, Wheeling Hospital, Wheeling, WV, USA
| | - Qiuhong Zhao
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Alice S Mims
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Sumithira Vasu
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Gregory K Behbehani
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Karilyn Larkin
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - James S Blachly
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Mohamed A Badawi
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University
| | - Kasey L Hill
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University
| | - Kyle R Dzwigalski
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University
| | - Mitch A Phelps
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University
| | - William Blum
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Winship Cancer Institute, Atlanta, GA, USA
| | - Rebecca B Klisovic
- Department of Hematology and Medical Oncology, University Hospitals Seidman Cancer Center, Cleveland, OH, USA
| | - Amy S Ruppert
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Parvathi Ranganathan
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
- The Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Alison R Walker
- Moffitt Cancer Center, University of South Florida, Tampa, FL, USA
| | - Ramiro Garzon
- Huntsman Cancer Institute, University of Utah, Salt Lake City UT, USA
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5
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Jiang J, Wang Y, Liu D, Wang X, Zhu Y, Tong J, Chen E, Xue L, Zhao N, Liang T, Zheng C. Selinexor Synergistically Promotes the Antileukemia Activity of Venetoclax in Acute Myeloid Leukemia by Inhibiting Glycolytic Function and Downregulating the Expression of DNA Replication Genes. Immunotargets Ther 2023; 12:135-147. [PMID: 38026089 PMCID: PMC10680489 DOI: 10.2147/itt.s429402] [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: 07/07/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The BCL-2 inhibitor venetoclax has been widely used in the treatment of acute myeloid leukemia (AML); however, AML patients treated with venetoclax gradually develop resistance. The exportin-1 (XPO1) inhibitor selinexor can synergistically promote the antileukemia activity of venetoclax, but the mechanism remains unclear. Methods and Results Annexin V/7-aminoactinomycin D assays were used to examine the effects of a combination of venetoclax and selinexor (VEN+SEL) on AML cell lines and primary AML cells. RNA sequencing and oxygen consumption rate (OCR) and extracellular acidification rate (ECAR) determinations by a Seahorse XF analyzer were employed to investigate the molecular mechanism of the toxicity of the VEN+SEL combination to AML cells. The cytotoxicity of NK cell combined with VEN+SEL combination was assessed in vitro using flow cytometry. VEN+SEL enhanced the apoptosis of AML cells (KG-1A and THP-1) and primary AML samples in vitro. The ECAR and OCR results demonstrated that the VEN+SEL combination significantly inhibited glycolytic function. RNA sequencing of THP-1 cells demonstrated that DNA replication-related genes were downregulated after treatment with the VEN+SEL combination. Conclusion This study indicated that selinexor can synergistically enhance the antileukemia activity of venetoclax in AML cells in vitro by inhibiting glycolytic function and downregulating DNA replication-related genes. Based on our experimental data, combining selinexor with venetoclax is an appropriate advanced treatment option for AML patients.
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Affiliation(s)
- Jiqian Jiang
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Yan Wang
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Dan Liu
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Xiaoyu Wang
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Yingqiao Zhu
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Juan Tong
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Erling Chen
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Lei Xue
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Na Zhao
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Tingting Liang
- The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
| | - Changcheng Zheng
- Department of Hematology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, People’s Republic of China
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6
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Vitale C, Griggio V, Todaro M, Riganti C, Jones R, Boccellato E, Perutelli F, Arruga F, Vaisitti T, Efremov DG, Deaglio S, Landesman Y, Bruno B, Coscia M. Anti-tumor activity of selinexor in combination with antineoplastic agents in chronic lymphocytic leukemia. Sci Rep 2023; 13:16950. [PMID: 37805613 PMCID: PMC10560255 DOI: 10.1038/s41598-023-44039-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 10/03/2023] [Indexed: 10/09/2023] Open
Abstract
Despite recent relevant therapeutic progresses, chronic lymphocytic leukemia (CLL) remains an incurable disease. Selinexor, an oral inhibitor of the nuclear export protein XPO1, is active as single agent in different hematologic malignancies, including CLL. The purpose of this study was to evaluate the anti-tumor effects of selinexor, used in combination with chemotherapy drugs (i.e. fludarabine and bendamustine) or with the PI3Kδ inhibitor idelalisib in CLL. Our results showed a significant decrease in CLL cell viability after treatment with selinexor-containing drug combinations compared to each single compound, with demonstration of synergistic cytotoxic effects. Interestingly, this drug synergism was exerted also in the presence of the protective effect of stromal cells. From the molecular standpoint, the synergistic cytotoxic activity of selinexor plus idelalisib was associated with increased regulatory effects of this drug combination on the tumor suppressors FOXO3A and IkBα compared to each single compound. Finally, selinexor was also effective in potentiating the in vivo anti-tumor effects of the PI3Kδ inhibitor in mice treated with the drug combination compared to single agents. Our data provide preclinical evidence of the synergism and potential efficacy of a combination treatment targeting XPO1 and PI3Kδ in CLL.
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Affiliation(s)
- Candida Vitale
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Valentina Griggio
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Maria Todaro
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, 10126, Turin, Italy
| | - Rebecca Jones
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Elia Boccellato
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Francesca Perutelli
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Francesca Arruga
- Department of Medical Sciences, University of Torino, 10126, Turin, Italy
| | - Tiziana Vaisitti
- Department of Medical Sciences, University of Torino, 10126, Turin, Italy
| | - Dimitar G Efremov
- Molecular Hematology, International Centre for Genetic Engineering and Biotechnology, 34149, Trieste, Italy
| | - Silvia Deaglio
- Department of Medical Sciences, University of Torino, 10126, Turin, Italy
| | | | - Benedetto Bruno
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy
| | - Marta Coscia
- University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, 10126, Turin, Italy.
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Turin, Italy.
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7
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Xu Z, Pan B, Miao Y, Li Y, Qin S, Liang J, Kong Y, Zhang X, Tang J, Xia Y, Zhu H, Wang L, Li J, Wu J, Xu W. Prognostic value and therapeutic targeting of XPO1 in chronic lymphocytic leukemia. Clin Exp Med 2023; 23:2651-2662. [PMID: 36738306 DOI: 10.1007/s10238-023-01003-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/17/2023] [Indexed: 02/05/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is a subtype of B-cell malignancy with high heterogeneity. XPO1 is highly expressed in many hematological malignancies, which predicts poor prognosis. In the study, we aimed to explore the prognostic role of XPO1 and the therapeutic effect of Selinexor, a selective inhibitor of nuclear export, which targets XPO1. We collected 200 CLL samples in our center to confirm XPO1 mRNA expression and analyzed the correlation between XPO1 expression and prognosis. Then, we decreased XPO1 expression with Selinexor to explore the effect of proliferation inhibition, cell cycle arrest, and apoptosis in CLL cell lines. RNA-Seq was performed to explore potential mechanisms. We analyzed XPO1 expression in a cohort of 150 treatment naive patients and another cohort of 50 relapsed and refractory (R/R) patients and found that XPO1 expression was upregulated in 76% of CLL patients compared with healthy donors. Survival analysis suggested that patients with increased XPO1 expression had inferior treatment-free survival (P = 0.022) and overall survival (P = 0.032). The inhibitor of XPO1, Selinexor, induced apoptosis in primary CLL cells. We showed the effects of Selinexor on proliferation inhibition, cell cycle arrest, and apoptosis in CLL cell lines with JVM3, MEC1, and ibrutinib-resistant (MR) cells via nuclear retention of cargo proteins of IκBα, p65, p50, and FOXO3a. Moreover, downregulation of the NF-κB and FOXO pathways was a common feature of the three CLL cell lines responding to Selinexor, indicating the potential application of XPO1 inhibitor even in the high-risk CLL cells. We identified XPO1 as an unfavorable prognostic factor for CLL patients and provided a rationale for further investigation of the clinically XPO1 targeted therapeutic strategy against CLL.
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Affiliation(s)
- Zhangdi Xu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Bihui Pan
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Yi Miao
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Yue Li
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Shuchao Qin
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Jinhua Liang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Yilin Kong
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Xinyu Zhang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Jing Tang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Yi Xia
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Huayuan Zhu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Li Wang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Jianyong Li
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China
| | - Jiazhu Wu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China.
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China.
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China.
| | - Wei Xu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, 210029, China.
- Key Laboratory of Hematology of Nanjing Medical University, Nanjing, 210029, China.
- Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, 210029, China.
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8
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Palaniyandi S, Kumari R, Strattan E, Huang T, Kohler K, Du J, Jabbour N, Kesler M, Hildebrandt GC. Role of Defibrotide in the Prevention of Murine Model Graft-versus-Host Disease after Allogeneic Hematopoietic Cell Transplantation. Transplant Cell Ther 2023; 29:608.e1-608.e9. [PMID: 37517613 DOI: 10.1016/j.jtct.2023.07.023] [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: 02/03/2023] [Revised: 07/19/2023] [Accepted: 07/26/2023] [Indexed: 08/01/2023]
Abstract
Graft-versus-host disease (GVHD) is a major complication of allogeneic hematopoietic stem cell transplantation (allo-HSCT). Vascular endothelial cells are entirely exposed and damaged during the pathogenesis of acute GVHD (aGVHD). Defibrotide (DF) is a mixture of single-stranded oligonucleotides that has several pharmacologic effects that contribute to its endothelial protective properties. B10.BR mice were conditioned, followed by the infusion of donor C57BL/6J T cell-depleted bone marrow cells with or without splenocytes. The mice were either treated with DF or appropriate controls daily for the first week and then 3 times per week thereafter. Allogeneic DF-treated recipients demonstrated significantly better survival with reduced clinical GVHD. Significantly reduced organ pathology in the gut was associated with significantly decreased T cell infiltration in the ileum and colon on day +28. Serum cytokine analysis revealed significantly reduced levels of TNF and IL-6 at day +7 and of TNF at day +28 in allogeneic DF-treated recipients. Significantly reduced levels of ICAM-1 and angiopoietin-2 in serum and reduced VCAM-1 and HCAM levels in the ileum and colon of allogeneic DF-treated recipients were observed. Improved survival was seen in the graft-versus-leukemia (GVL) model (C3H.SW into C57BL/6J mice with C1498-luc). Through its anti-inflammatory and endothelial protective effects, DF treatment reduces the severity of aGVHD while not impairing GVL activity.
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Affiliation(s)
- Senthilnathan Palaniyandi
- Division of Hematology and Medical Oncology, Department of Medicine, Ellis Fischel Cancer Center, University of Missouri, Columbia, Missouri; Division of Hematology & Blood and Marrow Transplantation, Department of Internal Medicine, Markey Cancer Center, University of Kentucky, Lexington, Kentucky
| | - Reena Kumari
- Division of Hematology & Blood and Marrow Transplantation, Department of Internal Medicine, Markey Cancer Center, University of Kentucky, Lexington, Kentucky
| | - Ethan Strattan
- Division of Hematology & Blood and Marrow Transplantation, Department of Internal Medicine, Markey Cancer Center, University of Kentucky, Lexington, Kentucky
| | - Timothy Huang
- Division of Hematology & Blood and Marrow Transplantation, Department of Internal Medicine, Markey Cancer Center, University of Kentucky, Lexington, Kentucky
| | - Katharina Kohler
- Division of Hematology & Blood and Marrow Transplantation, Department of Internal Medicine, Markey Cancer Center, University of Kentucky, Lexington, Kentucky
| | - Jing Du
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, Kentucky
| | - Nashwan Jabbour
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, Kentucky
| | - Melissa Kesler
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, Kentucky
| | - Gerhard C Hildebrandt
- Division of Hematology and Medical Oncology, Department of Medicine, Ellis Fischel Cancer Center, University of Missouri, Columbia, Missouri; Division of Hematology & Blood and Marrow Transplantation, Department of Internal Medicine, Markey Cancer Center, University of Kentucky, Lexington, Kentucky.
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9
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Fisher JG, Doyle ADP, Graham LV, Sonar S, Sale B, Henderson I, Del Rio L, Johnson PWM, Landesman Y, Cragg MS, Forconi F, Walker CJ, Khakoo SI, Blunt MD. XPO1 inhibition sensitises CLL cells to NK cell mediated cytotoxicity and overcomes HLA-E expression. Leukemia 2023; 37:2036-2049. [PMID: 37528310 PMCID: PMC10539165 DOI: 10.1038/s41375-023-01984-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/03/2023] [Accepted: 07/21/2023] [Indexed: 08/03/2023]
Abstract
The first-in-class inhibitor of exportin-1 (XPO1) selinexor is currently under clinical investigation in combination with the BTK inhibitor ibrutinib for patients with chronic lymphocytic leukaemia (CLL) or non-Hodgkin lymphoma. Selinexor induces apoptosis of tumour cells through nuclear retention of tumour suppressor proteins and has also recently been described to modulate natural killer (NK) cell and T cell cytotoxicity against lymphoma cells. Here, we demonstrate that XPO1 inhibition enhances NK cell effector function against primary CLL cells via downregulation of HLA-E and upregulation of TRAIL death receptors DR4 and DR5. Furthermore, selinexor potentiates NK cell activation against CLL cells in combination with several approved treatments; acalabrutinib, rituximab and obinutuzumab. We further demonstrate that lymph node associated signals (IL-4 + CD40L) inhibit NK cell activation against CLL cells via upregulation of HLA-E, and that inhibition of XPO1 can overcome this protective effect. These findings allow for the design of more efficacious combination strategies to harness NK cell effector functions against CLL.
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Affiliation(s)
- Jack G Fisher
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, UK
| | - Amber D P Doyle
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, UK
| | - Lara V Graham
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, UK
| | - Shreyanshi Sonar
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, UK
| | - Ben Sale
- School of Cancer Sciences, University of Southampton, Southampton, UK
| | - Isla Henderson
- School of Cancer Sciences, University of Southampton, Southampton, UK
| | - Luis Del Rio
- School of Cancer Sciences, University of Southampton, Southampton, UK
| | - Peter W M Johnson
- School of Cancer Sciences, University of Southampton, Southampton, UK
| | | | - Mark S Cragg
- School of Cancer Sciences, University of Southampton, Southampton, UK
- Antibody and Vaccine Group, Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Francesco Forconi
- School of Cancer Sciences, University of Southampton, Southampton, UK
- Haematology Department, Cancer Care Directorate, University Hospital Southampton NHS Trust, Southampton, UK
| | | | - Salim I Khakoo
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, UK
| | - Matthew D Blunt
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, UK.
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10
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Tong X, Zhang Y, Chen J, Wu DP. [The development of selective XPO1 inhibitors in the treatment of acute myeloid leukemia]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2023; 44:788-792. [PMID: 38049328 PMCID: PMC10630573 DOI: 10.3760/cma.j.issn.0253-2727.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Indexed: 12/06/2023]
Affiliation(s)
- X Tong
- Department of Pathology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Y Zhang
- Department of Hematology, the First Affiliated Hospital of Soochow Universityy, Suzhou 215006, China
| | - J Chen
- Department of Hematology, the First Affiliated Hospital of Soochow Universityy, Suzhou 215006, China
| | - D P Wu
- Department of Hematology, the First Affiliated Hospital of Soochow Universityy, Suzhou 215006, China
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11
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Tong X, Jin J, Xu B, Su S, Li L, Li M, Peng Y, Mao X, Huang W, Zhang D. Real-world experience with selinexor-containing chemotherapy-free or low-dose chemotherapy regimens for patients with relapsed/refractory acute myeloid leukemia and myeloid sarcoma. Front Pharmacol 2023; 14:1217701. [PMID: 37601075 PMCID: PMC10436481 DOI: 10.3389/fphar.2023.1217701] [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: 05/05/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023] Open
Abstract
Introduction: Treatment of relapsed or refractory acute myeloid leukemia (R/R AML) and myeloid sarcoma (MS) has presented challenges for decades. Studies on selinexor in combination with various standard or intensive chemotherapy regimens for the treatment of R/R AML have demonstrated promising results. This study aimed to evaluate the efficacy and safety of chemotherapy-free or low-dose chemotherapy regimens with selinexor for R/R AML and MS patients. Methods: Ten patients with R/R AML or MS who received chemotherapy-free or low-dose chemotherapy regimens in combination with selinexor at Tongji Hospital from October 2021 to August 2022 were included in this study. The primary endpoint was overall response rate (ORR) and secondary endpoints included complete remission (CR), CR with incomplete hematological recovery (CRi), partial remission (PR), transplantation rate, and safety. Results: All patients were evaluable for response, achieving CR in four (40.0%) patients and CRi in two (20.0%) patients for a total CR/CRi of 60.0%. The ORR was 80.0% when patients with PR were included. Five (50.0%) patients underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT) after treatment with selinexor-containing regimens. At the end of the follow-up, seven (70.0%) patients were alive, and three patients died of transplant-related complications or disease progression. The most frequently reported nonhematologic adverse events (AEs) in patients were grade 1 or 2 asymptomatic hyponatremia. Conclusion: The chemotherapy-free or low-dose chemotherapy regimens in combination with selinexor for R/R AML are feasible and tolerable and provide an opportunity for patients to receive transplantation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Donghua Zhang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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12
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ÖZDAŞ T, ÖZDAŞ S, CANATAR İ, ÇOŞKUN E, ŞENYURT EB, GÖRGÜLÜ O. CRM1 expression: association with high prognostic value in laryngeal cancer. Turk J Med Sci 2023; 53:909-923. [PMID: 38031942 PMCID: PMC10760544 DOI: 10.55730/1300-0144.5655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/18/2023] [Accepted: 02/03/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Laryngeal cancer is a very common malignant tumor of the head and neck. While laryngeal cancer does not show any obvious early symptoms, it tends to have a poor prognosis in advanced clinical stages. Chromosome region maintenance 1 (CRM1) mediates the nuclear export of some RNAs, major and tumor suppressor proteins and has been associated with the pathogenesis of many tumors. However, the clinicopathological significance of CRM1 gene expression in laryngeal cancer has not been clarified yet. Therefore, this study aims to detect the expression of CRM1 in laryngeal cancer and to investigate its relationship with clinicopathological parameters and prognosis. METHODS CRM1 expression in matched tumor and normal tissues obtained from 43 laryngeal cancer patients were evaluated intracellular for protein and mRNA levels by immunohistochemical staining (IHC), western-blot, and quantitative real-time RT-PCR (qRT-PCR), respectively. RESULTS IHC, western-blot, and qRT-PCR analyses showed that CRM1 expression was significantly increased in laryngeal cancer tissue compared to normal tissue. Increased expression of CRM1 has been associated with poor prognostic clinicopathological features, including advanced tumor stage, increased tumor invasion, larger tumor size, positive lymph node metastasis, distant metastasis, and invasive histological type by IHC, western-blot, and qRT-PCR. Kaplan-Meier survival analysis showed that patients with high expression of CRM1 exhibited lower overall survival compared to those with low expression (Log-rank = 7.16, p = 0.007). According to the The Cancer Genome Atlas (TCGA) datasets, elevated CRM1 expression in head and neck cancer including cases of squamous cell laryngeal origin is associated with advanced tumor stage and histological grade (p > 0.05, for all). DISCUSSION Consequently, CRM1 plays an important role in laryngeal cancer and may serve as an indicator and prognostic factor for poor overall survival in laryngeal cancer patients.
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Affiliation(s)
- Talih ÖZDAŞ
- Department of Otorhinolaryngology, Adana City Training and Research Hospital, Health Science University, Adana,
Turkiye
| | - Sibel ÖZDAŞ
- Department of Bioengineering, Faculty of Engineering Sciences, Adana Alparslan Türkeş Science and Technology University, Adana,
Turkiye
| | - İpek CANATAR
- Department of Bioengineering, Faculty of Engineering Sciences, Adana Alparslan Türkeş Science and Technology University, Adana,
Turkiye
| | - Erdal ÇOŞKUN
- Genomics Team, Microsoft Research, Redmond, WA,
USA
| | - Elif Burcu ŞENYURT
- Department of Otorhinolaryngology, Adana City Training and Research Hospital, Health Science University, Adana,
Turkiye
| | - Orhan GÖRGÜLÜ
- Department of Otorhinolaryngology, Adana City Training and Research Hospital, Health Science University, Adana,
Turkiye
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13
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Pan D, Li Z, Lin X, Li L. Transcriptome sequencing and miRNA-mRNA network construction in exosome of macrophage M2 in stomach adenocarcinoma. World J Surg Oncol 2023; 21:193. [PMID: 37370118 DOI: 10.1186/s12957-023-03070-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND Stomach adenocarcinoma (STAD) is the most common histological type of gastric cancer (GC). Macrophages are an essential part of the tumor microenvironment. We attempted to search for potential molecular markers associated with macrophages, which might be helpful for STAD diagnosis and treatment. METHODS Firstly, exosome in macrophages was extracted for RNA sequencing to identify differentially expressed microRNAs (miRNAs) (DEmiRNAs). Then, DEmiRNAs and differentially expressed mRNAs (DEmRNAs) were screened in the Cancer Genome Atlas (TCGA) database. The miRNAs related to macrophage M2 polarization were obtained by intersecting the DEmiRNAs obtained from the sequencing data and TCGA data. Using the Pearson correlation coefficient method, the mRNAs significantly related to macrophage M2 were screened out, followed by construction of the macrophage M2-miRNA-mRNA network. Subsequently, real-time-polymerase chain reaction (RT-PCR) and online datasets were applied to validate the expression of DEmiRNAs and DEmRNAs. RESULTS A total of 6 DEmiRNAs were identified in RNA sequencing; 59 DEmiRNAs and 1838 DEmRNAs were identified in TCGA database. Among which, a common miRNA (hsa-miR-133a-3p) associated with the M2 polarization of macrophages was identified. Fifteen common mRNAs were obtained between DEmRNAs and mRNAs targeted by DEmiRNAs. Eventually, a core macrophage M2-1 down-regulated miRNA-7 and up-regulated mRNAs network was constructed, including hsa-miR-133a-3p, SLC39A1, TTYH3, HAVCR2, TPM3, XPO1, POU2F1, and MMP14. The expression of miRNA and mRNAs was in line with the validation results of RT-PCR and online datasets. CONCLUSION In this study, the screening of biomarkers in exosome of macrophage M2 may contribute to the prognosis of STAD patients.
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Affiliation(s)
- Dun Pan
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - Zhipeng Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - Xin Lin
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
| | - Liangqing Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian Province, China.
- Department of Gastrointestinal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China.
- Fujian Research Institute of Abdominal Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China.
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14
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Udi Y, Zhang W, Stein ME, Ricardo-Lax I, Pasolli HA, Chait BT, Rout MP. A general method for quantitative fractionation of mammalian cells. J Cell Biol 2023; 222:213941. [PMID: 36920247 PMCID: PMC10040634 DOI: 10.1083/jcb.202209062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/11/2023] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
Subcellular fractionation in combination with mass spectrometry-based proteomics is a powerful tool to study localization of key proteins in health and disease. Here we offered a reliable and rapid method for mammalian cell fractionation, tuned for such proteomic analyses. This method proves readily applicable to different cell lines in which all the cellular contents are accounted for, while maintaining nuclear and nuclear envelope integrity. We demonstrated the method's utility by quantifying the effects of a nuclear export inhibitor on nucleoplasmic and cytoplasmic proteomes.
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Affiliation(s)
- Yael Udi
- Laboratory of Cellular and Structural Biology, The Rockefeller University , New York, NY, USA
| | - Wenzhu Zhang
- Laboratory of Mass Spectrometry and Gaseous Ion Chemistry, The Rockefeller University , New York, NY, USA
| | - Milana E Stein
- Laboratory of Cellular and Structural Biology, The Rockefeller University , New York, NY, USA
| | - Inna Ricardo-Lax
- Laboratory of Virology and Infectious Disease, The Rockefeller University , New York, NY, USA
| | - Hilda A Pasolli
- Electron Microscopy Resource Center, The Rockefeller University , New York, NY, USA
| | - Brian T Chait
- Laboratory of Mass Spectrometry and Gaseous Ion Chemistry, The Rockefeller University , New York, NY, USA
| | - Michael P Rout
- Laboratory of Cellular and Structural Biology, The Rockefeller University , New York, NY, USA
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15
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Zhou J, Lei Z, Chen J, Liao S, Chen Y, Liu C, Huang S, Li L, Zhang Y, Wang P, Huang Y, Li J, Liang H. Nuclear export of BATF2 enhances colorectal cancer proliferation through binding to CRM1. Clin Transl Med 2023; 13:e1260. [PMID: 37151195 PMCID: PMC10165233 DOI: 10.1002/ctm2.1260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/21/2023] [Accepted: 04/26/2023] [Indexed: 05/09/2023] Open
Abstract
BACKGROUND During the tumourigenesis and development of colorectal cancer (CRC), the inactivation of tumour suppressor genes is closely involved, although detailed molecular mechanisms remain elusive. Accumulating studies, including ours, have demonstrated that basic leucine zipper transcription factor ATF (activating transcription factor)-like 2 (BATF2) is a capable tumour suppressor that localises in the nucleus. However, its different subcellular localisation, potential functions and underlying mechanisms are unclear. METHODS The translocation of BATF2 and its clinical relevance were detected using CRC samples, cell lines and xenograft nude mice. Candidate BATF2-binding proteins were screened using co-immunoprecipitation, quantitative label-free liquid chromatography-tandem mass spectrometry proteomic analysis, Western blotting and immunofluorescence. Recombinant plasmids, point mutations and siRNAs were applied to clarify the binding sites between BATF2 and chromosome region maintenance 1 (CRM1). RESULTS The present study found that BATF2 was mainly localised in the cytoplasm, rather than nucleus, of CRC cells in vitro and in vivo, while cytoplasmic BATF2 expression was inversely correlated with the prognosis of CRC patients. Furthermore, we identified the nuclear export and subsequent ubiquitin-mediated degradation of BATF2 in CRC cells. Mechanistically, a functional nuclear export sequence (any amino acid) was characterised in BATF2 protein, through which BATF2 bound to CRM1 and translocated out of nucleus, ultimately enhancing CRC growth via inducing activator protein 1 (AP-1)/cyclin D1/phosphorylated retinoblastoma protein (pRb) signalling pathway. Additionally, nuclear export of BATF2 can be retarded by the mutation of NES in BATF2 or the knockdown of CRM1, whereas CRM1 expression was negatively associated with nuclear BATF2 expression and the prognosis of CRC patients. CONCLUSION These findings revealed the biological effects and underlying mechanisms of cytoplasmic localisation of BATF2. Furthermore, suppressing nuclear export of BATF2 via mutating its NES region or inhibiting CRM1 expression may serve as a promising therapeutic strategy against CRC.
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Affiliation(s)
- Jie Zhou
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Zengjie Lei
- Department of Medical OncologyAffiliated Jinling HospitalMedical School of Nanjing UniversityNanjingChina
| | - Jianfang Chen
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Shengbo Liao
- Department of OtolaryngologyPeople's Hospital of Xishui CountyGuizhouChina
| | - Yanrong Chen
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Chengxiang Liu
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Shuo Huang
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Liuli Li
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Yan Zhang
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Pei Wang
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Yinghui Huang
- Department of NephrologyKey Laboratory for the Prevention and Treatment of Chronic Kidney Disease of ChongqingChongqing Clinical Research Center of Kidney and Urology DiseasesXinqiao HospitalArmy Medical UniversityChongqingChina
| | - Jianjun Li
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Houjie Liang
- Department of Oncology and Southwest Cancer CenterSouthwest HospitalArmy Medical University (Third Military Medical University)ChongqingChina
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16
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Long H, Hou Y, Li J, Song C, Ge Z. Azacitidine Is Synergistically Lethal with XPO1 Inhibitor Selinexor in Acute Myeloid Leukemia by Targeting XPO1/eIF4E/c-MYC Signaling. Int J Mol Sci 2023; 24:ijms24076816. [PMID: 37047788 PMCID: PMC10094826 DOI: 10.3390/ijms24076816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/20/2023] [Accepted: 03/28/2023] [Indexed: 04/09/2023] Open
Abstract
Acute myeloid leukemia (AML) is a high-mortality malignancy with poor outcomes. Azacitidine induces cell death and demonstrates treatment effectiveness against AML. Selinexor (KPT-330) exhibited significant benefits in combination with typical induction treatment for AML patients. Here, we explore the antitumor effect of KPT-330 combined with AZA in AML through CCK-8, flow cytometry, RT-qPCR, western blot, and RNA-seq. Our results showed that KPT-330 combined with AZA synergistically reduced cell proliferation and induced apoptosis in AML primary cells and cell lines. Compared to the control, the KPT-330 plus AZA down-regulates the expression of XPO1, eIF4E, and c-MYC in AML. Moreover, the knockdown of c-MYC could sensitize the synergy of the combination on suppression of cell proliferation and promotion of apoptosis in AML. Moreover, the expression of XPO1 and eIF4E was elevated in AML patient cohorts, respectively. XPO1 and elF4E overexpression was associated with poor prognosis. In summary, KPT-330 with AZA exerted synergistic effects by suppressing XPO1/eIF4E/c-MYC signaling, which provided preclinical evidence for further clinical application of the novel combination in AML.
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Affiliation(s)
- Huideng Long
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - Yue Hou
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - Jun Li
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - Chunhua Song
- Hershey Medical Center, Pennsylvania State University Medical College, Hershey, PA 17033, USA
- Division of Hematology, The Ohio State University Wexner Medical Center, The James Cancer Hospital, Columbus, OH 43210, USA
| | - Zheng Ge
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
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17
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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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18
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Sher S, Whipp E, Walker J, Zhang P, Beaver L, Williams K, Orwick S, Ravikrishnan J, Walker B, Perry E, Gregory C, Purcell M, Pan A, Yan P, Alinari L, Johnson AJ, Frigault MM, Greer JM, Hamdy A, Izumi R, Mo X, Sampath D, Woyach J, Blachly J, Byrd JC, Lapalombella R. VIP152 is a selective CDK9 inhibitor with pre-clinical in vitro and in vivo efficacy in chronic lymphocytic leukemia. Leukemia 2023; 37:326-338. [PMID: 36376377 PMCID: PMC9898036 DOI: 10.1038/s41375-022-01758-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 11/16/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is effectively treated with targeted therapies including Bruton tyrosine kinase inhibitors and BCL2 antagonists. When these become ineffective, treatment options are limited. Positive transcription elongation factor complex (P-TEFb), a heterodimeric protein complex composed of cyclin dependent kinase 9 (CDK9) and cyclin T1, functions to regulate short half-life transcripts by phosphorylation of RNA Polymerase II (POLII). These transcripts are frequently dysregulated in hematologic malignancies; however, therapies targeting inhibition of P-TEFb have not yet achieved approval for cancer treatment. VIP152 kinome profiling revealed CDK9 as the main enzyme inhibited at 100 nM, with over a 10-fold increase in potency compared with other inhibitors currently in development for this target. VIP152 induced cell death in CLL cell lines and primary patient samples. Transcriptome analysis revealed inhibition of RNA degradation through the AU-Rich Element (ARE) dysregulation. Mechanistically, VIP152 inhibits the assembly of P-TEFb onto the transcription machinery and disturbs binding partners. Finally, immune competent mice engrafted with CLL-like cells of Eµ-MTCP1 over-expressing mice and treated with VIP152 demonstrated reduced disease burden and improvement in overall survival compared to vehicle-treated mice. These data suggest that VIP152 is a highly selective inhibitor of CDK9 that represents an attractive new therapy for CLL.
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Affiliation(s)
- Steven Sher
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Ethan Whipp
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Janek Walker
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Pu Zhang
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Larry Beaver
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Katie Williams
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Shelley Orwick
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Janani Ravikrishnan
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Brandi Walker
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Elizabeth Perry
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Charles Gregory
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Matthew Purcell
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Alexander Pan
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Pearlly Yan
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Lapo Alinari
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | | | | | | | | | | | - Xiaokui Mo
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Deepa Sampath
- Department of Hematopoietic Biology & Malignancy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jennifer Woyach
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - James Blachly
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
| | - John C Byrd
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Rosa Lapalombella
- Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA.
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19
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Hing ZA, Walker JS, Whipp EC, Brinton L, Cannon M, Zhang P, Sher S, Cempre CB, Brown F, Smith PL, Agostinelli C, Pileri SA, Skinner JN, Williams K, Phillips H, Shaffer J, Beaver LP, Pan A, Shin K, Gregory CT, Ozer GH, Yilmaz SA, Harrington BK, Lehman AM, Yu L, Coppola V, Yan P, Scherle P, Wang M, Pitis P, Xu C, Vaddi K, Chen-Kiang S, Woyach J, Blachly JS, Alinari L, Yang Y, Byrd JC, Baiocchi RA, Blaser BW, Lapalombella R. Dysregulation of PRMT5 in chronic lymphocytic leukemia promotes progression with high risk of Richter's transformation. Nat Commun 2023; 14:97. [PMID: 36609611 PMCID: PMC9823097 DOI: 10.1038/s41467-022-35778-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 12/22/2022] [Indexed: 01/08/2023] Open
Abstract
Richter's Transformation (RT) is a poorly understood and fatal progression of chronic lymphocytic leukemia (CLL) manifesting histologically as diffuse large B-cell lymphoma. Protein arginine methyltransferase 5 (PRMT5) is implicated in lymphomagenesis, but its role in CLL or RT progression is unknown. We demonstrate herein that tumors uniformly overexpress PRMT5 in patients with progression to RT. Furthermore, mice with B-specific overexpression of hPRMT5 develop a B-lymphoid expansion with increased risk of death, and Eµ-PRMT5/TCL1 double transgenic mice develop a highly aggressive disease with transformation that histologically resembles RT; where large-scale transcriptional profiling identifies oncogenic pathways mediating PRMT5-driven disease progression. Lastly, we report the development of a SAM-competitive PRMT5 inhibitor, PRT382, with exclusive selectivity and optimal in vitro and in vivo activity compared to available PRMT5 inhibitors. Taken together, the discovery that PRMT5 drives oncogenic pathways promoting RT provides a compelling rationale for clinical investigation of PRMT5 inhibitors such as PRT382 in aggressive CLL/RT cases.
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Affiliation(s)
- Zachary A Hing
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Janek S Walker
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Ethan C Whipp
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Lindsey Brinton
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Matthew Cannon
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Pu Zhang
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Steven Sher
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Casey B Cempre
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Fiona Brown
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Porsha L Smith
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Claudio Agostinelli
- Haematopathology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Stefano A Pileri
- European Institute of Oncology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Milan, Italy
- Department of Specialized, Experimental and Diagnostic Medicine, University of Bologna, Bologna, Italy
| | - Jordan N Skinner
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Katie Williams
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Hannah Phillips
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Jami Shaffer
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Larry P Beaver
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Alexander Pan
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Kyle Shin
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Charles T Gregory
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Gulcin H Ozer
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Selen A Yilmaz
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Bonnie K Harrington
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Amy M Lehman
- Center for Biostatistics, The Ohio State University, Columbus, OH, USA
| | - Lianbo Yu
- Center for Biostatistics, The Ohio State University, Columbus, OH, USA
| | - Vincenzo Coppola
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH, USA
| | - Pearlly Yan
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | | | - Min Wang
- Prelude Therapeutics, Wilmington, DE, USA
| | | | - Chaoyi Xu
- Prelude Therapeutics, Wilmington, DE, USA
| | - Kris Vaddi
- Prelude Therapeutics, Wilmington, DE, USA
| | - Selina Chen-Kiang
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Jennifer Woyach
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - James S Blachly
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Lapo Alinari
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Yiping Yang
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - John C Byrd
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
- Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Robert A Baiocchi
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Bradley W Blaser
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Rosa Lapalombella
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.
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20
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XPO1-Mediated EIF1AX Cytoplasmic Relocation Promotes Tumor Migration and Invasion in Endometrial Carcinoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1361135. [PMID: 36589683 PMCID: PMC9800903 DOI: 10.1155/2022/1361135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/30/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
Dysregulation of eukaryotic translation initiation factor 1A, X-linked (EIF1AX), has been implicated in the pathogenesis of some cancers. However, the role of EIF1AX in endometrial carcinoma (EC) remains unknown. We investigated the EIF1AX expression in EC patients and assessed its tumorigenesis-associated function and nucleocytoplasmic transport mechanism in vitro and in vivo. The results indicated that the cytoplasmic EIF1AX expression showed a gradual increase when going from endometrium normal tissue, simple endometrial hyperplasia, complex endometrial hyperplasia, and endometrial atypical hyperplasia to EC, while vice versa for the nuclear EIF1AX expression. In addition, the cytoplasmic EIF1AX expression was positively correlated with histologic type, high International Federation of Gynecology and Obstetrics (FIGO) grade, advanced FIGO stage, deeper infiltration, high Ki67 index, and shorter recurrence-free survival in EC patients. In vitro, short hairpin RNA-mediated EIF1AX depletion or SV40NLS-mediated EIF1AX import into the nucleus in multiple human EC cells potently suppressed cell migration and invasion, epithelial-mesenchymal transition, and lung metastasis. Moreover, exportin 1 induced the transport of EIF1AX from the nucleus to the cytoplasm that could be inhibited by leptomycin B treatment or the mutation in the EIF1AX location sequence. These results demonstrate that cytoplasmic EIF1AX may play a key role in the incidence and promotion of EC, and thus, targeting EIF1AX or its nucleocytoplasmic transport process may offer an effective new therapeutic approach to EC.
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21
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Fisher JG, Doyle ADP, Graham LV, Khakoo SI, Blunt MD. Disruption of the NKG2A:HLA-E Immune Checkpoint Axis to Enhance NK Cell Activation against Cancer. Vaccines (Basel) 2022; 10:1993. [PMID: 36560403 PMCID: PMC9783329 DOI: 10.3390/vaccines10121993] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
Ligation of the inhibitory receptor NKG2A by its ligand HLA-E negatively regulates the activation of natural killer (NK) cells, as well as subsets of CD8+ T cells and innate T cell populations. NKG2A has recently become a novel immune checkpoint target for the treatment of cancer and direct antibody mediated blockade of NKG2A function is currently under assessment in two phase 3 clinical trials. In addition to direct targeting, the NKG2A:HLA-E axis can also be disrupted indirectly via multiple different targeted cancer agents that were not previously recognised to possess immunomodulatory properties. Increased understanding of immune cell modulation by targeted cancer therapies will allow for the design of rational and more efficacious drug combination strategies to improve cancer patient outcomes. In this review, we summarise and discuss the various strategies currently in development which either directly or indirectly disrupt the NKG2A:HLA-E interaction to enhance NK cell activation against cancer.
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Affiliation(s)
| | | | | | | | - Matthew D. Blunt
- School of Clinical and Experimental Sciences, University of Southampton, Southampton SO16 6YD, UK
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22
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Biological and Exploitable Crossroads for the Immune Response in Cancer and COVID-19. Biomedicines 2022; 10:biomedicines10102628. [PMID: 36289890 PMCID: PMC9599827 DOI: 10.3390/biomedicines10102628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/05/2022] [Accepted: 10/14/2022] [Indexed: 12/15/2022] Open
Abstract
The outbreak of novel coronavirus disease 2019 (COVID-19) has exacted a disproportionate toll on cancer patients. The effects of anticancer treatments and cancer patients’ characteristics shared significant responsibilities for this dismal outcome; however, the underlying immunopathological mechanisms are far from being completely understood. Indeed, despite their different etiologies, SARS-CoV-2 infection and cancer unexpectedly share relevant immunobiological connections. In the pathogenesis and natural history of both conditions, there emerges the centrality of the immune response, orchestrating the timed appearance, functional and dysfunctional roles of multiple effectors in acute and chronic phases. A significant number (more than 600) of observational and interventional studies have explored the interconnections between COVID-19 and cancer, focusing on aspects as diverse as psychological implications and prognostic factors, with more than 4000 manuscripts published so far. In this review, we reported and discussed the dynamic behavior of the main cytokines and immune system signaling pathways involved in acute vs. early, and chronic vs. advanced stages of SARS-CoV-2 infection and cancer. We highlighted the biological similarities and active connections within these dynamic disease scenarios, exploring and speculating on possible therapeutic crossroads from one setting to the other.
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23
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Li M, Li X, Chen S, Zhang T, Song L, Pei J, Sun G, Guo L. IPO5 Mediates EMT and Promotes Esophageal Cancer Development through the RAS-ERK Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6570879. [PMID: 36120598 PMCID: PMC9481360 DOI: 10.1155/2022/6570879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/07/2022] [Accepted: 07/31/2022] [Indexed: 11/21/2022]
Abstract
Objective In the development of many tumors, IPO5, as a member of the nuclear transporter family, exerts a significant function. Also, IPO5 is used as a therapeutic target for tumors based on some reports. By studying IPO5 expression in esophageal cancer tissues, the mechanism associated with IPO5 improving esophageal cancer development was explored in this study. Methods To gain differentially expressed genes, this study utilized mRNA microarray and TCGA database for comprehensive analysis of esophageal cancer tissues and normal esophageal cancer tissues, and then the differentially expressed gene IPO5 was screened by us. To assess esophageal cancer patients' prognosis, this study also applied the Kaplan-Meier analysis, and we also conducted the GSEA enrichment analysis to investigate IPO5-related signaling pathways. This study performed TISIDB and TIMER online analysis tools to study the correlation between IPO5 and immune regulation and infiltration. We took specimens of esophageal cancer from patients and detected the expression of IPO5 in tumor and normal tissues by immunohistochemistry. The IPO5 gene-silenced esophageal cancer cell model was constructed by lentivirus transfection. Through the Transwell invasion assay, CCK-8 assay, and cell scratch assay, this study investigated the effects of IPO5 on cell propagation, invasion, and transfer. What is more, we identified the influences of IPO5 on the cell cycle through flow cytometry and established a subcutaneous tumor-forming model in nude mice. Immunohistochemistry was used to verify the expression of KI-67, and this study detected the modifications of cell pathway-related proteins using Western blot and applied EMT-related proteins to explain the mechanism of esophageal cancer induced by IPO5. Results According to database survival analysis, IPO5 high-expression patients had shorter disease-free survival than IPO5 low-expression patients. Compared to normal tissues, the IPO5 expression in cancer tissues was significantly higher in clinical trials (P < 0.05). Through TISIDB and TIMER database studies, we found that IPO5 could affect immune regulation, and the age of IPO5 expression grows with the increase of immune infiltration level. The IPO5 expression in esophageal cancer cells was higher than normal, especially in ECA109 and OE33 cells (P < 0.01). After knocking out IPO5 gene expression, cell proliferation capacity and invasion capacity were reduced (P < 0.05) and decreased (P < 0.01) in the IPO5-interfered group rather than the negative control group. The growth cycle of esophageal carcinoma cells was arrested in the G2/M phase after IPO5 gene silencing (P < 0.01). Tumor-forming experiments in nude mice confirmed that after IPO5 deletion, the tumor shrank, the expression of KI67 decreased, the downstream protein expression level of the RAS pathway decreased after sh-IPO5 interference (P < 0.01), and the level of EMT marker delined (P < 0.05). Conclusion In esophageal cancer, IPO5 is highly expressed and correlates with survival rate. Esophageal cancer cell growth and migration were significantly affected by the inhibition of IPO5 in vitro and in vivo. IPO5 mediates EMT using the RAS-ERK signaling pathway activation and promotes esophageal cancer cell development in vivo and in vitro.
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Affiliation(s)
- Meiyu Li
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xiaofei Li
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Shujia Chen
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Tianai Zhang
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Liaoyuan Song
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Jiayue Pei
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Guoyan Sun
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Lianyi Guo
- The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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24
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Walker CJ, Chang H, Henegar L, Kashyap T, Shacham S, Sommer J, Wick MJ, Levy J, Landesman Y. Selinexor inhibits growth of patient derived chordomas in vivo as a single agent and in combination with abemaciclib through diverse mechanisms. Front Oncol 2022; 12:808021. [PMID: 36059685 PMCID: PMC9434827 DOI: 10.3389/fonc.2022.808021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 07/12/2022] [Indexed: 11/21/2022] Open
Abstract
Chordoma is a rare cancer that grows in the base of the skull and along the mobile spine from remnants of embryonic notochord tissue. The cornerstone of current treatments is surgical excision with adjuvant radiation therapy, although complete surgical removal is not always possible. Chordomas have high rates of metastasis and recurrence, with no approved targeted agents. Selinexor and eltanexor are selective inhibitors of nuclear export (SINE) that prevent the karyopherin protein exportin-1 (XPO1) from shuttling its cargo proteins through nuclear pore complexes out of the nucleus and into the cytoplasm. As cancer cells overexpress XPO1, and many of its cargos include tumor suppressor proteins and complexes bound to oncogene mRNAs, XPO1 inhibition can suppress oncogene translation and restore tumor suppressor protein activity in different cancer types. SINE compounds have exhibited anti-cancer activity in a wide range of hematological and solid tumor malignancies. Here we demonstrate the preclinical effectiveness of SINE compounds used as single agents or in combination with either the proteasome inhibitor, bortezomib, or the CDK4/6 inhibitor, abemaciclib, against various patient- derived xenograft (PDX) mouse models of chordoma, which included clival and sacral chordomas from adult or pediatric patients with either primary or metastatic disease, with either differentiated or poorly differentiated subtypes. SINE treatment significantly impaired tumor growth in all five tested chordoma models, with the selinexor and abemaciclib combination showing the strongest activity (tumor growth inhibition of 78-92%). Immunohistochemistry analysis of excised tumors revealed that selinexor treatment resulted in marked induction of apoptosis and reduced cell proliferation, as well as nuclear accumulation of SMAD4, and reduction of Brachyury and YAP1. RNA sequencing showed selinexor treatment resulted in differences in activated and repressed signaling pathways between the PDX models, including changes in WNT signaling, E2F pathways and glucocorticoid receptor signaling. This is consistent with SINE-compound mediated XPO1 inhibition exhibiting anti-cancer activity through a broad range of different mechanisms in different molecular chordoma subsets. Our findings validate the need for further investigation into selinexor as a targeted therapeutic for chordoma, especially in combination with abemaciclib.
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Affiliation(s)
- Christopher J. Walker
- Department of Translational Research, Karyopharm Therapeutics, Inc, Newton, MA, United States
| | - Hua Chang
- Department of Translational Research, Karyopharm Therapeutics, Inc, Newton, MA, United States
| | - Leah Henegar
- Department of Translational Research, Karyopharm Therapeutics, Inc, Newton, MA, United States
| | - Trinayan Kashyap
- Department of Translational Research, Karyopharm Therapeutics, Inc, Newton, MA, United States
| | - Sharon Shacham
- Department of Translational Research, Karyopharm Therapeutics, Inc, Newton, MA, United States
| | - Josh Sommer
- Department of Research, Chordoma Foundation, Durham, NC, United States
| | - Michael J. Wick
- Department of Research, XenoSTART, San Antonio, TX, United States
| | - Joan Levy
- Department of Research, Chordoma Foundation, Durham, NC, United States
| | - Yosef Landesman
- Department of Translational Research, Karyopharm Therapeutics, Inc, Newton, MA, United States
- *Correspondence: Yosef Landesman,
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25
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Stephens DM, Huang Y, Ruppert AS, Walker JS, Canfield D, Cempre CB, Fu Q, Baker S, Hu B, Shah H, Vadeboncoeur R, Rogers KA, Bhat S, Jaglowski SM, Lockman H, Lapalombella R, Byrd JC, Woyach JA. Selinexor Combined with Ibrutinib Demonstrates Tolerability and Safety in Advanced B-Cell Malignancies: A Phase I Study. Clin Cancer Res 2022; 28:3242-3247. [PMID: 35608822 PMCID: PMC9364840 DOI: 10.1158/1078-0432.ccr-21-3867] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/22/2021] [Accepted: 05/18/2022] [Indexed: 02/04/2023]
Abstract
PURPOSE Dual blockade of Bruton's tyrosine kinase with ibrutinib and selinexor has potential to deepen responses for patients with chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphoma (NHL). PATIENTS AND METHODS In this phase I study (clinicaltrials.gov: NCT02303392), adult patients with CLL/NHL, relapsed/refractory to ≥1 prior therapy were enrolled. Patients received weekly oral selinexor and daily oral ibrutinib in 28-day cycles until progression or intolerance. Primary objective was to determine MTD. RESULTS Included patients had CLL (n = 16) or NHL (n = 18; 9 Richter transformation, 6 diffuse large B-cell lymphoma, and 3 mantle cell lymphoma). Median prior therapies were 4 (range = 1-14) and 59% previously received ibrutinib. The established MTD was 40 mg of selinexor (days 1, 8, 15) and 420 mg daily ibrutinib. Common nonhematologic adverse events were fatigue (56%), nausea (53%), anorexia (41%), and diarrhea (41%) and were mostly low grade. Overall response rate was 32%. An additional 47% achieved stable disease (SD), some prolonged (up to 36 months). Median progression-free survival for patients with CLL and NHL was 8.9 [95% confidence interval (CI), 3.9-16.1] and 2.7 (95% CI, 0.7-5.4) months, respectively. For patients with CLL who did not receive prior ibrutinib, only 20% (1/5) progressed. Estimated 2-year overall survival was 73.7% (95% CI, 44.1-89.2) and 27.8% (95% CI, 10.1-48.9) for patients with CLL and NHL, respectively. CONCLUSIONS The selinexor and ibrutinib combination has demonstrated tolerability in patients with relapsed/refractory CLL/NHL. Responses were durable. Notable responses were seen in patients with CLL with minimal prior therapy. Future study of this combination will focus on efforts to deepen remissions in patients with CLL receiving ibrutinib therapy.
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Affiliation(s)
| | | | | | | | | | | | - Qiang Fu
- Ohio State University, Columbus, OH
| | | | - Boyu Hu
- University of Utah, Salt Lake City, UT
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26
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Ben Barouch S, Bhella S, Kridel R, Kukreti V, Prica A, Crump M, Kuruvilla J. Long-term follow up of relapsed/refractory non-Hodgkin lymphoma patients treated with single-agent selinexor – a retrospective, single center study. Leuk Lymphoma 2022; 63:1879-1886. [DOI: 10.1080/10428194.2022.2047674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sharon Ben Barouch
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
- Division of Hematology, Assuta Ashdod University Hospital, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Sita Bhella
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
| | - Robert Kridel
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
| | - Vishel Kukreti
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
| | - Anca Prica
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
| | - Michel Crump
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
| | - John Kuruvilla
- Department of Medicine, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Canada
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27
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Guo Y, Liu Z, Duan L, Shen H, Ding K, Fu R. Selinexor synergizes with azacitidine to eliminate myelodysplastic syndrome cells through p53 nuclear accumulation. Invest New Drugs 2022; 40:738-746. [PMID: 35576022 DOI: 10.1007/s10637-022-01251-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/25/2022] [Indexed: 10/18/2022]
Abstract
Myelodysplastic syndromes (MDS) are clonal malignancies of multipotent hematopoietic stem cells, characterized by ineffective hematopoiesis leading to cytopenia. Hypomethylating agents, including azacitidine, have been used for treating MDS with some success; however, the overall survival rate remains poor and, therefore, finding new therapies is necessary. Selinexor, which exerts anticancer effects against some hematologic tumors, is a nuclear export protein inhibitor that blocks cell proliferation and induces apoptosis in various cancer cell lines. We investigated the effects of combined selinexor and azacitidine administration on two MDS cell lines, namely SKM-1 and MUTZ-1. Cells were subjected to a proliferation assay, and the effects of each drug alone, and in combination, were compared. Changes in apoptosis and the cell cycle between groups were also analyzed. Western blotting was conducted to identify the underlying mechanism of action of combined selinexor and azacitidine therapy. The results revealed that the combination of selinexor and azacitidine synergistically inhibited MDS cell proliferation and arrested the cell cycle at the G2/M phase. This combination also promoted MDS cell apoptosis and enhanced p53 accumulation in the nucleus, thereby allowing p53 to be activated and to function as a tumor suppressor. Overall, our results indicate that the combination of selinexor and azacitidine may be a promising approach for treating MDS.
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Affiliation(s)
- Yixuan Guo
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhaoyun Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Lixiang Duan
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China.,Department of Hematology, Yuncheng Central Hospital, Shanxi, China
| | - Hongli Shen
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Kai Ding
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Rong Fu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China.
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28
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Wing CE, Fung HYJ, Chook YM. Karyopherin-mediated nucleocytoplasmic transport. Nat Rev Mol Cell Biol 2022; 23:307-328. [PMID: 35058649 PMCID: PMC10101760 DOI: 10.1038/s41580-021-00446-7] [Citation(s) in RCA: 95] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2021] [Indexed: 12/25/2022]
Abstract
Efficient and regulated nucleocytoplasmic trafficking of macromolecules to the correct subcellular compartment is critical for proper functions of the eukaryotic cell. The majority of the macromolecular traffic across the nuclear pores is mediated by the Karyopherin-β (or Kap) family of nuclear transport receptors. Work over more than two decades has shed considerable light on how the different Kap family members bring their respective cargoes into the nucleus or the cytoplasm in efficient and highly regulated manners. In this Review, we overview the main features and established functions of Kap family members, describe how Kaps recognize their cargoes and discuss the different ways in which these Kap-cargo interactions can be regulated, highlighting new findings and open questions. We also describe current knowledge of the import and export of the components of three large gene expression machines - the core replisome, RNA polymerase II and the ribosome - pointing out the questions that persist about how such large macromolecular complexes are trafficked to serve their function in a designated subcellular location.
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29
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Fung HYJ, Chook YM. Crystallization of Nuclear Export Signals or Small-Molecule Inhibitors Bound to Nuclear Exporter CRM1. Methods Mol Biol 2022; 2502:285-297. [PMID: 35412246 DOI: 10.1007/978-1-0716-2337-4_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The Karyopherin protein CRM1 or XPO1 is the major nuclear export receptor that regulates nuclear exit of thousands of macromolecules in the cell. CRM1 recognizes protein cargoes by binding to their 8-15 residue-long nuclear export signals (NESs). A ternary CRM1-Ran-RanBP1 complex engineered to be suitable for crystallization has enabled structure determination by X-ray crystallography of CRM1 bound to many NES peptides and small-molecule inhibitors. Here, we present a protocol for the purification of the individual proteins, formation of the ternary CRM1-Ran-RanBP1 complex and crystallization of this complex for X-ray crystallography.
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Affiliation(s)
- Ho Yee Joyce Fung
- Department of Pharmacology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Yuh Min Chook
- Department of Pharmacology, UT Southwestern Medical Center, Dallas, TX, USA.
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30
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Kim E, Mordovkina DA, Sorokin A. Targeting XPO1-Dependent Nuclear Export in Cancer. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:S178-S70. [PMID: 35501995 DOI: 10.1134/s0006297922140140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 09/29/2021] [Accepted: 10/08/2021] [Indexed: 06/14/2023]
Abstract
Nucleocytoplasmic transport of macromolecules is tightly regulated in eukaryotic cells. XPO1 is a transport factor responsible for the nuclear export of several hundred protein and RNA substrates. Elevated levels of XPO1 and recurrent mutations have been reported in multiple cancers and linked to advanced disease stage and poor survival. In recent years, several novel small-molecule inhibitors of XPO1 were developed and extensively tested in preclinical cancer models and eventually in clinical trials. In this brief review, we summarize the functions of XPO1, its role in cancer, and the latest results of clinical trials of XPO1 inhibitors.
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Affiliation(s)
- Ekaterina Kim
- The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
| | - Daria A Mordovkina
- Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - Alexey Sorokin
- The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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31
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Fisher JG, Walker CJ, Doyle ADP, Johnson PWM, Forconi F, Cragg MS, Landesman Y, Khakoo SI, Blunt MD. Selinexor Enhances NK Cell Activation Against Malignant B Cells via Downregulation of HLA-E. Front Oncol 2021; 11:785635. [PMID: 34926302 PMCID: PMC8672299 DOI: 10.3389/fonc.2021.785635] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/12/2021] [Indexed: 12/11/2022] Open
Abstract
Selinexor is an FDA approved selective inhibitor of the nuclear export protein exportin-1 (XPO1) and causes specific cancer cell death via nuclear accumulation of tumor suppressor proteins. Design of rational studies for the use of selinexor in combination with other therapeutic agents, such as immunotherapies, requires a fundamental understanding of the effects of selinexor on the immune system. One important emerging area of immunotherapy are natural killer (NK) cell based therapeutics. NK cell function is tightly regulated by a balance of signals derived from multiple activating and inhibitory receptors. Thus in cancer, up-regulation of stress ligands recognised by activating receptors or down-regulation of HLA class I recognised by inhibitory receptors can result in an anti-cancer NK cell response. Changes in XPO1 function therefore have the potential to affect NK cell function through shifting this balance. We therefore sought to investigate how selinexor may affect NK cell function. Selinexor pre-treatment of lymphoma cells significantly increased NK cell mediated cytotoxicity against SU-DHL-4, JeKo-1 and Ramos cells, concurrent with increased CD107a and IFNγ expression on NK cells. In addition, selinexor enhanced ADCC against lymphoma cells coated with the anti-CD20 antibodies rituximab and obinutuzumab. In probing the likely mechanism, we identified that XPO1 inhibition significantly reduced the surface expression of HLA-E on lymphoma cell lines and on primary chronic lymphocytic leukemia cells. HLA-E binds the inhibitory receptor NKG2A and in accordance with this, selinexor selectively increased activation of NKG2A+ NK cells. Our data reveals that selinexor, in addition to its direct cytotoxic activity, also activates an anti-cancer immune response via disruption of the inhibitory NKG2A:HLA-E axis.
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Affiliation(s)
- Jack G. Fisher
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, United Kingdom
| | - Christopher J. Walker
- Research & Translational Development, Karyopharm Therapeutics, Newton, MA, United States
| | - Amber DP. Doyle
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, United Kingdom
| | - Peter WM. Johnson
- School of Cancer Sciences, University of Southampton, Southampton, United Kingdom
| | - Francesco Forconi
- School of Cancer Sciences, University of Southampton, Southampton, United Kingdom
| | - Mark S. Cragg
- School of Cancer Sciences, University of Southampton, Southampton, United Kingdom
| | - Yosef Landesman
- Research & Translational Development, Karyopharm Therapeutics, Newton, MA, United States
| | - Salim. I. Khakoo
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, United Kingdom
| | - Matthew D. Blunt
- School of Clinical and Experimental Sciences, University of Southampton, Southampton, United Kingdom
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32
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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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33
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Liu S, Qiao W, Sun Q, Luo Y. Chromosome Region Maintenance 1 (XPO1/CRM1) as an Anticancer Target and Discovery of Its Inhibitor. J Med Chem 2021; 64:15534-15548. [PMID: 34669417 DOI: 10.1021/acs.jmedchem.1c01145] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Chromosome region maintenance 1 (CRM1) is a major nuclear export receptor protein and contributes to cell homeostasis by mediating the transport of cargo from the nucleus to the cytoplasm. CRM1 is a therapeutic target comprised of several tumor types, including osteosarcoma, multiple myeloma, gliomas, and pancreatic cancer. In the past decade, dozens of CRM1 inhibitors have been discovered and developed, including KPT-330, which received FDA approval for multiple myeloma (MM) and diffuse large B-cell lymphoma (DLBCL) in 2019 and 2020, respectively. This review summarizes the biological functions of CRM1, the current understanding of the role CRM1 plays in cancer, the discovery of CRM1 small-molecule inhibitors, preclinical and clinical studies on KPT-330, and other recently developed inhibitors. A new CRM1 inhibition mechanism and structural dynamics are discussed. Through this review, we hope to guide the future design and optimization of CRM1 inhibitors.
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Affiliation(s)
- Song Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Wenliang Qiao
- Lung Cancer Center, Laboratory of Lung Cancer, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Qingxiang Sun
- State Key Laboratory of Biotherapy, Department of Pathology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Youfu Luo
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
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34
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Inhibition of XPO-1 Mediated Nuclear Export through the Michael-Acceptor Character of Chalcones. Pharmaceuticals (Basel) 2021; 14:ph14111131. [PMID: 34832913 PMCID: PMC8621101 DOI: 10.3390/ph14111131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 01/10/2023] Open
Abstract
The nuclear export receptor exportin-1 (XPO1, CRM1) mediates the nuclear export of proteins that contain a leucine-rich nuclear export signal (NES) towards the cytoplasm. XPO1 is considered a relevant target in different human diseases, particularly in hematological malignancies, tumor resistance, inflammation, neurodegeneration and viral infections. Thus, its pharmacological inhibition is of significant therapeutic interest. The best inhibitors described so far (leptomycin B and SINE compounds) interact with XPO1 through a covalent interaction with Cys528 located in the NES-binding cleft of XPO1. Based on the well-established feature of chalcone derivatives to react with thiol groups via hetero-Michael addition reactions, we have synthesized two series of chalcones. Their capacity to react with thiol groups was tested by incubation with GSH to afford the hetero-Michael adducts that evolved backwards to the initial chalcone through a retro-Michael reaction, supporting that the covalent interaction with thiols could be reversible. The chalcone derivatives were evaluated in antiproliferative assays against a panel of cancer cell lines and as XPO1 inhibitors, and a good correlation was observed with the results obtained in both assays. Moreover, no inhibition of the cargo export was observed when the two prototype chalcones 9 and 10 were tested against a XPO1-mutated Jurkat cell line (XPO1C528S), highlighting the importance of the Cys at the NES-binding cleft for inhibition. Finally, their interaction at the molecular level at the NES-binding cleft was studied by applying the computational tool CovDock.
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35
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Marretta AL, Di Lorenzo G, Ribera D, Cannella L, von Arx C, Bracigliano A, Clemente O, Tafuto R, Pizzolorusso A, Tafuto S. Selinexor and the Selective Inhibition of Nuclear Export: A New Perspective on the Treatment of Sarcomas and Other Solid and Non-Solid Tumors. Pharmaceutics 2021; 13:pharmaceutics13091522. [PMID: 34575598 PMCID: PMC8466603 DOI: 10.3390/pharmaceutics13091522] [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: 07/06/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 12/05/2022] Open
Abstract
Nucleocytoplasmic transport has been found dysregulated in many types of cancer and is often described as a poor prognostic factor. Specifically, Exportin-1 (XPO1) has been found overexpressed in many tumors and has become an attractive target in molecular oncology and therapeutics development. The selective inhibitor of nuclear export, Selinexor, is one of the most scientifically interesting drugs that targets XPO1 in clinical development. In this review, we summarized the most relevant preclinical and clinical results achieved for non-solid tumors, sarcomas, and other kind of solid tumors.
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Affiliation(s)
- Antonella Lucia Marretta
- Department of Clinical and Surgery Oncology Unit, University of Naples “Federico II”, Via S. Pansini 5, 80131 Naples, Italy;
| | - Giuseppe Di Lorenzo
- Sarcomas and Rare Tumors Unit, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, 80131 Naples, Italy; (G.D.L.); (L.C.); (O.C.); (A.P.); (S.T.)
| | - Dario Ribera
- Department of Clinical and Surgery Oncology Unit, University of Naples “Federico II”, Via S. Pansini 5, 80131 Naples, Italy;
- Correspondence:
| | - Lucia Cannella
- Sarcomas and Rare Tumors Unit, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, 80131 Naples, Italy; (G.D.L.); (L.C.); (O.C.); (A.P.); (S.T.)
| | - Claudia von Arx
- Department of Breast and Thoracic Oncology, Division of Breast Medical Oncology, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, 80131 Naples, Italy;
| | - Alessandra Bracigliano
- Nuclear Medicine Unit, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, Via M. Semmola 53, 80131 Naples, Italy;
| | - Ottavia Clemente
- Sarcomas and Rare Tumors Unit, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, 80131 Naples, Italy; (G.D.L.); (L.C.); (O.C.); (A.P.); (S.T.)
| | - Roberto Tafuto
- Division of Neurosurgery, University of Naples “Federico II”, Via S. Pansini 5, 80131 Naples, Italy;
| | - Antonio Pizzolorusso
- Sarcomas and Rare Tumors Unit, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, 80131 Naples, Italy; (G.D.L.); (L.C.); (O.C.); (A.P.); (S.T.)
| | - Salvatore Tafuto
- Sarcomas and Rare Tumors Unit, Istituto Nazionale Tumori—IRCCS, Fondazione “G. Pascale”, 80131 Naples, Italy; (G.D.L.); (L.C.); (O.C.); (A.P.); (S.T.)
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36
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Zhou L, Zhao H, Shao Y, Chen X, Hong R, Wang L, Ni F, Nagler A, Hu Y, Huang H. Serial surveillance by circulating tumor DNA profiling after chimeric antigen receptor T therapy for the guidance of r/r diffuse large B cell lymphoma precise treatment. J Cancer 2021; 12:5423-5431. [PMID: 34405005 PMCID: PMC8364638 DOI: 10.7150/jca.60390] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 06/28/2021] [Indexed: 12/14/2022] Open
Abstract
Background: Circulating tumor DNA (ctDNA) released from tumor cells carries the tumor-associated genetic and epigenetic characteristics of cancer patients. Next-generation sequencing (NGS) facilitates the application of ctDNA profiling for identification and monitoring of minimal residual disease (MRD) in cancer, and can serve as the guidance for precise treatment. Methods: In this study, we profiled genomic alterations in the baseline, relapsed, and progressive tumor samples of eight diffuse large B cell lymphoma (DLBCL) patients (NCT03118180) after chimeric antigen receptor T (CAR-T) cell therapy. Results: The median follow-up was 41 months. 4 (50%) patients achieved complete remission (CR), 1 (12.5%) patient achieved partial remission (PR), and the other 3 (37.5%) patients showed no response. 3 of 5 patients who achieved remission relapsed within 4 months after CAR-T therapy, while the rest 2 patients remained CR for more than 3 years. Based on the positron emission tomography-computed tomography (PET-CT) scan, the current gold standard for evaluating response to therapy in lymphoma, the sensitivity and specificity of our ctDNA profiling in detecting tumor-related ctDNA mutations were 94.7% and 83.3%, respectively. The median numbers of baseline plasma ctDNA mutations in patients who remained long-term CR and patients who relapsed or became refractory to CAR-T therapy were 3 and 14.3, respectively. GNA13, SOCS1, TNFAIP3 and XPO1 mutations appeared to be associated with poor prognosis after CAR-T cell therapy. Our results also suggested that lenalidomide might relieve relapsed lymphoma with mutations in NFKBIA 202C>T (p.Q68*) and NFKBIE 433A>T (p.K145*) by targeting NF-Kappa B signaling. In addition, the inhibitor selinexor may be another choice for refractory or relapse (r/r) DLBCL patients after CAR-T cell treatment. Conclusion: Serial ctDNA monitoring is an emerging technology for the surveillance of disease status and prognosis prediction. In this work, we demonstrated the use of serial ctDNA monitoring in r/r DLBCL patients after CD19-targeted CAR-T cell therapy. Our longitudinal NGS profiling revealed the changes of ctDNA mutation in accordance with prognosis, and shed some light on exploring more targeted treatment options together with CAR-T cell therapy.
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Affiliation(s)
- Linghui Zhou
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - Houli Zhao
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - Yang Shao
- Nanjing Geneseeq Technology Inc., Nanjing, Jiangsu, China
| | - Xin Chen
- Nanjing Geneseeq Technology Inc., Nanjing, Jiangsu, China
| | - Ruimin Hong
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - Linqin Wang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - Fang Ni
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - Arnon Nagler
- Chaim Sheba Medical Center, Tel Hashomer, Israel, Tel Hashomer, Israel
| | - Yongxian Hu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
| | - He Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine.,Institute of Hematology, Zhejiang University.,Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy.,Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou 311121, China
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37
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Wang S, Sellner L, Wang L, Sauer T, Neuber B, Gong W, Stock S, Ni M, Yao H, Kleist C, Schmitt A, Müller-Tidow C, Schmitt M, Schubert ML. Combining selective inhibitors of nuclear export (SINEs) with chimeric antigen receptor (CAR) T cells for CD19‑positive malignancies. Oncol Rep 2021; 46:170. [PMID: 34165175 PMCID: PMC8250584 DOI: 10.3892/or.2021.8121] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 04/08/2021] [Indexed: 11/06/2022] Open
Abstract
Chimeric antigen receptor (CAR) T cells directed against CD19 (CD19.CAR T cells) have yielded impressive clinical responses in the treatment of patients with lymphoid malignancies. However, resistance and/or relapse can limit treatment outcome. Risk of tumor escape can be reduced by combining treatment strategies. Selective inhibitors of nuclear export (SINEs) directed against nuclear exportin‑1 (XPO1) have demonstrated anti‑tumor efficacy in several hematological malignancies. The aim of the present study was to evaluate the combination of CAR T cells with the SINE compounds eltanexor and selinexor. As expected, eltanexor and selinexor were toxic to CD19‑positive malignant cells and the sensitivity of cells towards SINEs correlated with the levels of XPO1‑expression in ALL cell lines. When SINEs and CAR T cells were simultaneously combined, SINEs exerted toxicity towards CAR T cells and impaired their function affecting cytotoxicity and cytokine release ability. Flow cytometry and western blot analysis revealed that eltanexor decreased the cytoplasmic concentration of the transcription factor phosphorylated‑STAT3 in CAR T cells. Due to CAR T‑cell toxicity, sequential use of SINEs and CAR T cells was evaluated: Cytotoxicity of CAR T cells increased significantly when target cells were pre‑treated with the SINE compound eltanexor. In addition, exhaustion of CAR T cells decreased when target cells were pre‑treated with eltanexor. In summary, whereas the concomitant use of SINEs and CAR T cells does not seem advisable, sequential use of SINEs and CAR T cells might improve the anti‑tumor efficacy of CAR T cells.
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Affiliation(s)
- Sanmei Wang
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Leopold Sellner
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Lei Wang
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Tim Sauer
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Brigitte Neuber
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Wenjie Gong
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
- Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Sophia Stock
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Ming Ni
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Hao Yao
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Christian Kleist
- Department of Nuclear Medicine, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Anita Schmitt
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
| | - Carsten Müller-Tidow
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT)/German Cancer Consortium (DKTK), D-69120 Heidelberg, Germany
| | - Michael Schmitt
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT)/German Cancer Consortium (DKTK), D-69120 Heidelberg, Germany
| | - Maria-Luisa Schubert
- Department of Internal Medicine V, Heidelberg University Hospital, D-69120 Heidelberg, Germany
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38
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Maerevoet M, Zijlstra JM, Follows G, Casasnovas RO, Vermaat JSP, Kalakonda N, Goy A, Choquet S, Van Den Neste E, Hill B, Thieblemont C, Cavallo F, De la Cruz F, Kuruvilla J, Hamad N, Jaeger U, Caimi P, Gurion R, Warzocha K, Bakhshi S, Sancho JM, Schuster M, Egyed M, Offner F, Vassilakopoulos TP, Samal P, Ku M, Ma X, Corona K, Chamoun K, Shah J, Shacham S, Kauffman MG, Canales M. Survival among patients with relapsed/refractory diffuse large B cell lymphoma treated with single-agent selinexor in the SADAL study. J Hematol Oncol 2021; 14:111. [PMID: 34271963 PMCID: PMC8283921 DOI: 10.1186/s13045-021-01122-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/01/2021] [Indexed: 01/22/2023] Open
Abstract
Patients with RR DLBCL who have received ≥ 2 lines of therapy have limited treatment options and an expected overall survival (OS) of < 6 months. The SADAL study evaluated single-agent oral selinexor in patients with RR DLBCL and demonstrated an overall response rate (ORR) of 29.1% with median duration of response (DOR) of 9.3 months. The analyses described here evaluated a number of subpopulations in order to understand how response correlates with survival outcomes in order to identify patients who could most optimally benefit from selinexor treatment. Median age was 67 years; 44.8% of patients were ≥ 70 years of age. The median OS was 9.0 months (95% CI 6.2, 13.7) at a median follow-up of 14.8 months. The median OS was not reached in patients with a CR or PR, while patients who did not respond have a median OS of 4.9 months (p < 0.0001). Patients < 70 years had an OS of 11.1 months compared with 7.8 months in patients ≥ 70 years. Among patients with or without prior ASCT, the median OS was 10.9 and 7.8 months, respectively. Among patients with disease refractory to the most recent DLBCL treatment regimen, the median OS was 7.0 months compared with 11.1 months for disease not refractory to the most recent treatment. In a patient population in which survival is expected to be < 6 months, treatment with single-agent oral selinexor was associated with a median survival of 9 months. Increased median OS observed in patients responding to selinexor was consistent across subgroups regardless of age, prior ASCT therapy, or refractory status. Randomized studies of selinexor in combination with a variety of other anti-DLBCL agents are planned. This trial was registered at ClinicalTrials.gov (NCT02227251) on August 28, 2014. https://clinicaltrials.gov/ct2/show/NCT02227251 .
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Affiliation(s)
- Marie Maerevoet
- Service Hématologie, Institut Jules Bordet, 1000, Brussels, Belgium.
| | - Josee M Zijlstra
- Amsterdam UMC, Vrije Universiteit, Cancer Center, Amsterdam, Netherlands
| | | | | | | | | | - Andre Goy
- Hackensack University Medical Center, Hackensack, USA
| | | | | | | | - Catherine Thieblemont
- APHP, Hemato-oncology, Saint-Louis Hospital, Paris, France.,Diderot University, Paris, France
| | | | | | | | - Nada Hamad
- St. Vincent's Hospital Sydney, Darlinghurst, Australia
| | | | | | - Ronit Gurion
- Rabin MC, Petah Tiqwa, Israel.,Tel Aviv University, Tel Aviv, Israel
| | | | - Sameer Bakhshi
- Dr. B. R. A. Institute Rotary Cancer Hospital, New Delhi, India
| | | | | | | | | | | | - Priyanka Samal
- Institute of Medical Sciences and SUM Hospital, Bhubaneswar, Odisha, India
| | - Matthew Ku
- St.Vincent's Hospital Melbourne, Fitzroy, Australia
| | - Xiwen Ma
- Karyopharm Therapeutics, Newton, USA
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Inoue A, Robinson FS, Minelli R, Tomihara H, Rizi BS, Rose JL, Kodama T, Srinivasan S, Harris AL, Zuniga AM, Mullinax RA, Ma X, Seth S, Daniele JR, Peoples MD, Loponte S, Akdemir KC, Khor TO, Feng N, Roszik J, Sobieski MM, Brunell D, Stephan C, Giuliani V, Deem AK, Shingu T, Deribe YL, Menter DG, Heffernan TP, Viale A, Bristow CA, Kopetz S, Draetta GF, Genovese G, Carugo A. Sequential Administration of XPO1 and ATR Inhibitors Enhances Therapeutic Response in TP53-mutated Colorectal Cancer. Gastroenterology 2021; 161:196-210. [PMID: 33745946 PMCID: PMC8238881 DOI: 10.1053/j.gastro.2021.03.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 02/24/2021] [Accepted: 03/05/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Understanding the mechanisms by which tumors adapt to therapy is critical for developing effective combination therapeutic approaches to improve clinical outcomes for patients with cancer. METHODS To identify promising and clinically actionable targets for managing colorectal cancer (CRC), we conducted a patient-centered functional genomics platform that includes approximately 200 genes and paired this with a high-throughput drug screen that includes 262 compounds in four patient-derived xenografts (PDXs) from patients with CRC. RESULTS Both screening methods identified exportin 1 (XPO1) inhibitors as drivers of DNA damage-induced lethality in CRC. Molecular characterization of the cellular response to XPO1 inhibition uncovered an adaptive mechanism that limited the duration of response in TP53-mutated, but not in TP53-wild-type CRC models. Comprehensive proteomic and transcriptomic characterization revealed that the ATM/ATR-CHK1/2 axes were selectively engaged in TP53-mutant CRC cells upon XPO1 inhibitor treatment and that this response was required for adapting to therapy and escaping cell death. Administration of KPT-8602, an XPO1 inhibitor, followed by AZD-6738, an ATR inhibitor, resulted in dramatic antitumor effects and prolonged survival in TP53-mutant models of CRC. CONCLUSIONS Our findings anticipate tremendous therapeutic benefit and support the further evaluation of XPO1 inhibitors, especially in combination with DNA damage checkpoint inhibitors, to elicit an enduring clinical response in patients with CRC harboring TP53 mutations.
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Affiliation(s)
- Akira Inoue
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas; Department of Gastroenterological Surgery, Osaka General Medical Center, Osaka, Japan.
| | - Frederick S Robinson
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas; Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Rosalba Minelli
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Hideo Tomihara
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Bahar Salimian Rizi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Johnathon L Rose
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Takahiro Kodama
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Sanjana Srinivasan
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Angela L Harris
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Andy M Zuniga
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Robert A Mullinax
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiaoyan Ma
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sahil Seth
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Joseph R Daniele
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael D Peoples
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sara Loponte
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kadir C Akdemir
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Tin Oo Khor
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ningping Feng
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jason Roszik
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mary M Sobieski
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, Texas
| | - David Brunell
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, Texas
| | - Clifford Stephan
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, Texas
| | - Virginia Giuliani
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Angela K Deem
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas; Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Takashi Shingu
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yonathan Lissanu Deribe
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - David G Menter
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Timothy P Heffernan
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Andrea Viale
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Christopher A Bristow
- Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Scott Kopetz
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Giulio F Draetta
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Giannicola Genovese
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas; Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Alessandro Carugo
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas; Translational Research to Advance Therapeutics and Innovation in Oncology (TRACTION) platform, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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Martin JG, Ward JA, Feyertag F, Zhang L, Couvertier S, Guckian K, Huber KVM, Johnson DS. Chemoproteomic Profiling of Covalent XPO1 Inhibitors to Assess Target Engagement and Selectivity. Chembiochem 2021; 22:2116-2123. [PMID: 33887086 DOI: 10.1002/cbic.202100038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/19/2021] [Indexed: 11/11/2022]
Abstract
Selinexor, a covalent XPO1 inhibitor, is approved in the USA in combination with dexamethasone for penta-refractory multiple myeloma. Additional XPO1 covalent inhibitors are currently in clinical trials for multiple diseases including hematologic malignancies, solid tumor malignancies, glioblastoma multiforme (GBM), and amyotrophic lateral sclerosis (ALS). It is important to measure the target engagement and selectivity of covalent inhibitors to understand the degree of engagement needed for efficacy, while avoiding both mechanism-based and off-target toxicity. Herein, we report clickable probes based on the XPO1 inhibitors selinexor and eltanexor for the labeling of XPO1 in live cells to assess target engagement and selectivity. We used mass spectrometry-based chemoproteomic workflows to profile the proteome-wide selectivity of selinexor and eltanexor and show that they are highly selective for XPO1. Thermal profiling analysis of selinexor further offers an orthogonal approach to measure XPO1 engagement in live cells. We believe these probes and assays will serve as useful tools to further interrogate the biology of XPO1 and its inhibition in cellular and in vivo systems.
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Affiliation(s)
- Jeffrey G Martin
- Biogen, Chemical Biology & Proteomics 225 Binney Street, Cambridge, MA 02142, USA
| | - Jennifer A Ward
- Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7DQ, UK
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Felix Feyertag
- Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7DQ, UK
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Lu Zhang
- Biogen, Chemical Biology & Proteomics 225 Binney Street, Cambridge, MA 02142, USA
| | - Shalise Couvertier
- Biogen, Chemical Biology & Proteomics 225 Binney Street, Cambridge, MA 02142, USA
| | - Kevin Guckian
- Biogen, Medicinal Chemistry 225 Binney Street, Cambridge, MA 02142, USA
| | - Kilian V M Huber
- Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7DQ, UK
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK
| | - Douglas S Johnson
- Biogen, Chemical Biology & Proteomics 225 Binney Street, Cambridge, MA 02142, USA
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41
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Sajidah ES, Lim K, Wong RW. How SARS-CoV-2 and Other Viruses Build an Invasion Route to Hijack the Host Nucleocytoplasmic Trafficking System. Cells 2021; 10:1424. [PMID: 34200500 PMCID: PMC8230057 DOI: 10.3390/cells10061424] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 05/31/2021] [Accepted: 06/03/2021] [Indexed: 12/14/2022] Open
Abstract
The host nucleocytoplasmic trafficking system is often hijacked by viruses to accomplish their replication and to suppress the host immune response. Viruses encode many factors that interact with the host nuclear transport receptors (NTRs) and the nucleoporins of the nuclear pore complex (NPC) to access the host nucleus. In this review, we discuss the viral factors and the host factors involved in the nuclear import and export of viral components. As nucleocytoplasmic shuttling is vital for the replication of many viruses, we also review several drugs that target the host nuclear transport machinery and discuss their feasibility for use in antiviral treatment.
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Affiliation(s)
- Elma Sakinatus Sajidah
- Division of Nano Life Science in the Graduate School of Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan;
| | - Keesiang Lim
- WPI-Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192, Japan
| | - Richard W. Wong
- Division of Nano Life Science in the Graduate School of Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan;
- WPI-Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192, Japan
- Cell-Bionomics Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
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42
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Lei Y, Li Y, Tan Y, Qian Z, Zhou Q, Jia D, Sun Q. Novel Mechanistic Observations and NES-Binding Groove Features Revealed by the CRM1 Inhibitors Plumbagin and Oridonin. JOURNAL OF NATURAL PRODUCTS 2021; 84:1478-1488. [PMID: 33890470 DOI: 10.1021/acs.jnatprod.0c01231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The protein chromosome region maintenance 1 (CRM1) is an important nuclear export factor and drug target in diseases such as cancer and viral infections. Several plant-derived CRM1 inhibitors including plumbagin and oridonin possess potent antitumor activities. However, their modes of CRM1 inhibition remain unclear. Here, a multimutant CRM1 was engineered to enable crystallization of these two small molecules in its NES groove. Plumbagin and oridonin share the same three conjugation sites in CRM1. In solution, these two inhibitors targeted more CRM1 sites and inhibited its activity through promoting its aggregation, in addition to directly targeting the NES groove. While the plumbagin-bound NES groove resembles the NES-bound groove state, the oridonin complex reveals for the first time a more open NES groove. The observed greater NES groove dynamics may improve cargo loading through a "capture-and-tighten" mechanism. This work thus provides new insights on the mechanism of CRM1 inhibition by two natural products and a structural basis for further development of these or other CRM1 inhibitors.
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Affiliation(s)
- Yuqin Lei
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, People's Republic of China
| | - Yuling Li
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, People's Republic of China
| | - Yuping Tan
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, People's Republic of China
| | - Zhiyong Qian
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, People's Republic of China
| | - Qiao Zhou
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, People's Republic of China
| | - Da Jia
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Pediatrics, Division of Neurology, West China Second University Hospital, Sichuan University, Chengdu 610041, People's Republic of China
| | - Qingxiang Sun
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, People's Republic of China
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43
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Lei Y, An Q, Shen XF, Sui M, Li C, Jia D, Luo Y, Sun Q. Structure-Guided Design of the First Noncovalent Small-Molecule Inhibitor of CRM1. J Med Chem 2021; 64:6596-6607. [PMID: 33974430 DOI: 10.1021/acs.jmedchem.0c01675] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Nuclear export factor chromosome region maintenance 1 (CRM1) is an attractive anticancer and antiviral drug target that spurred several research efforts to develop its inhibitor. Noncovalent CRM1 inhibitors are desirable, but none is reported to date. Here, we present the crystal structure of yeast CRM1 in complex with S109, a substructure of CBS9106 (under clinical test). Superimposition with the LFS-829 (another covalent CRM1 inhibitor) complex inspired the design of a noncovalent CRM1 inhibitor. Among nine synthesized compounds, noncovalent CRM1 inhibitor 1 (NCI-1) showed a high affinity to human and yeast CRM1 in the absence or presence of GST-bound Ras-related nuclear protein (RanGTP). Unlike covalent inhibitors, the crystal structure showed that NCI-1 is bound in the "open" nuclear export signal (NES) groove of CRM1, simultaneously occupying two hydrophobic pockets. NCI-1 additionally inhibited the nuclear export and proliferation of cells harboring the human CRM1-C528S mutant. Our work opens up the avenue of noncovalent CRM1 inhibitor development toward a more potent, less toxic, and broad-spectrum anticancer/antiviral therapy.
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Affiliation(s)
- Yuqin Lei
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, China
| | - Qi An
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, China
| | - Xiao-Fei Shen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, Division of Neurology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Min Sui
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, China
| | - Chungen Li
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, China
| | - Da Jia
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, Division of Neurology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Youfu Luo
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, China
| | - Qingxiang Sun
- Department of Pathology, State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University and Collaborative Innovation Centre of Biotherapy, Chengdu 610041, China
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Zong Z, Wei Y, Ren J, Zhang L, Zhou F. The intersection of COVID-19 and cancer: signaling pathways and treatment implications. Mol Cancer 2021; 20:76. [PMID: 34001144 PMCID: PMC8126512 DOI: 10.1186/s12943-021-01363-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/13/2021] [Indexed: 01/08/2023] Open
Abstract
The outbreak of the novel coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has emerged as a serious public health concern. Patients with cancer have been disproportionately affected by this pandemic. Increasing evidence has documented that patients with malignancies are highly susceptible to severe infections and mortality from COVID-19. Recent studies have also elucidated the molecular relationship between the two diseases, which may not only help optimize cancer care during the pandemic but also expand the treatment for COVID-19. In this review, we highlight the clinical and molecular similarities between cancer and COVID-19 and summarize the four major signaling pathways at the intersection of COVID-19 and cancer, namely, cytokine, type I interferon (IFN-I), androgen receptor (AR), and immune checkpoint signaling. In addition, we discuss the advantages and disadvantages of repurposing anticancer treatment for the treatment of COVID-19.
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Affiliation(s)
- Zhi Zong
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, 310058, China
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Yujun Wei
- Anhui Anlong Gene Technology Co., Ltd, Hefei, 230041, China
| | - Jiang Ren
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Long Zhang
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, 310058, China
| | - Fangfang Zhou
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
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Venetoclax response is enhanced by selective inhibitor of nuclear export compounds in hematologic malignancies. Blood Adv 2021; 4:586-598. [PMID: 32045477 DOI: 10.1182/bloodadvances.2019000359] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 01/17/2020] [Indexed: 12/18/2022] Open
Abstract
The selective inhibitor of nuclear export (SINE) compounds selinexor (KPT-330) and eltanexor (KPT-8602) are from a novel class of small molecules that target exportin-1 (XPO1 [CRM1]), an essential nucleo-cytoplasmic transport protein responsible for the nuclear export of major tumor suppressor proteins and growth regulators such as p53, p21, and p27. XPO1 also affects the translation of messenger RNAs for critical oncogenes, including MYC, BCL2, MCL1, and BCL6, by blocking the export of the translation initiation factor eIF4E. Early trials with venetoclax (ABT-199), a potent, selective inhibitor of BCL2, have revealed responses across a variety of hematologic malignancies. However, many tumors are not responsive to venetoclax. We used models of acute myeloid leukemia (AML) and diffuse large B-cell lymphoma (DLBCL) to determine in vitro and in vivo responses to treatment with venetoclax and SINE compounds combined. Cotreatment with venetoclax and SINE compounds demonstrated loss of viability in multiple cell lines. Further in vitro analyses showed that this enhanced cell death was the result of an increase in apoptosis that led to a loss of clonogenicity in methylcellulose assays, coinciding with activation of p53 and loss of MCL1. Treatment with SINE compounds and venetoclax combined led to a reduction in tumor growth in both AML and DLBCL xenografts. Immunohistochemical analysis of tissue sections revealed that the reduction in tumor cells was partly the result of an induction of apoptosis. The enhanced effects of this combination were validated in primary AML and DLBCL patient cells. Our studies reveal synergy with SINE compounds and venetoclax in aggressive hematologic malignancies and provide a rationale for pursuing this approach in a clinical trial.
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Crowley VM, Thielert M, Cravatt BF. Functionalized Scout Fragments for Site-Specific Covalent Ligand Discovery and Optimization. ACS CENTRAL SCIENCE 2021; 7:613-623. [PMID: 34056091 PMCID: PMC8155467 DOI: 10.1021/acscentsci.0c01336] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Indexed: 05/14/2023]
Abstract
Covalent ligands are a versatile class of chemical probes and drugs that can target noncanonical sites on proteins and display differentiated pharmacodynamic properties. Chemical proteomic methods have been introduced that leverage electrophilic fragments to globally profile the covalent ligandability of nucleophilic residues, such as cysteine and lysine, in native biological systems. Further optimization of these initial ligandability events without resorting to the time-consuming process of individualized protein purification and functional assay development, however, presents a persistent technical challenge. Here, we show that broadly reactive electrophilic fragments, or "scouts", can be converted into site-specific target engagement probes for screening small molecules against a wide array of proteins in convenient gel- and ELISA-based assay formats. We use these assays to expediently optimize a weak potency fragment hit into a sub-μM inhibitor that selectively engages an active-site cysteine in the retinaldehyde reductase AKR1B10. Our findings provide a road map to optimize covalent fragments into more advanced chemical probes without requiring protein purification or structural analysis.
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47
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Yoo TY, Mitchison TJ. O-GlcNAc modification of nuclear pore complexes accelerates bidirectional transport. J Cell Biol 2021; 220:212033. [PMID: 33909044 PMCID: PMC8091080 DOI: 10.1083/jcb.202010141] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 02/28/2021] [Accepted: 03/17/2021] [Indexed: 01/09/2023] Open
Abstract
Macromolecular transport across the nuclear envelope depends on facilitated diffusion through nuclear pore complexes (NPCs). The interior of NPCs contains a permeability barrier made of phenylalanine-glycine (FG) repeat domains that selectively facilitates the permeation of cargoes bound to nuclear transport receptors (NTRs). FG-repeat domains in NPCs are a major site of O-linked N-acetylglucosamine (O-GlcNAc) modification, but the functional role of this modification in nucleocytoplasmic transport is unclear. We developed high-throughput assays based on optogenetic probes to quantify the kinetics of nuclear import and export in living human cells. We found that increasing O-GlcNAc modification of the NPC accelerated NTR-facilitated transport of proteins in both directions, and decreasing modification slowed transport. Superresolution imaging revealed strong enrichment of O-GlcNAc at the FG-repeat barrier. O-GlcNAc modification also accelerated passive permeation of a small, inert protein through NPCs. We conclude that O-GlcNAc modification accelerates nucleocytoplasmic transport by enhancing the nonspecific permeability of the FG-repeat barrier, perhaps by steric inhibition of interactions between FG repeats.
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Affiliation(s)
- Tae Yeon Yoo
- Department of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA
| | - Timothy J Mitchison
- Department of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA
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Fung HYJ, Niesman A, Chook YM. An update to the CRM1 cargo/NES database NESdb. Mol Biol Cell 2021; 32:467-469. [PMID: 33720780 PMCID: PMC8101443 DOI: 10.1091/mbc.e20-11-0694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/04/2021] [Accepted: 01/13/2021] [Indexed: 11/30/2022] Open
Affiliation(s)
- Ho Yee Joyce Fung
- Department of Pharmacology, UT Southwestern Medical Center, Dallas TX 75390
| | - Ashley Niesman
- Department of Pharmacology, UT Southwestern Medical Center, Dallas TX 75390
| | - Yuh Min Chook
- Department of Pharmacology, UT Southwestern Medical Center, Dallas TX 75390
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49
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Azmi AS, Uddin MH, Mohammad RM. The nuclear export protein XPO1 - from biology to targeted therapy. Nat Rev Clin Oncol 2021; 18:152-169. [PMID: 33173198 DOI: 10.1038/s41571-020-00442-4] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2020] [Indexed: 12/23/2022]
Abstract
Exportin 1 (XPO1), also known as chromosome region maintenance protein 1, plays a crucial role in maintaining cellular homeostasis via the regulated export of a range of cargoes, including proteins and several classes of RNAs, from the nucleus to the cytoplasm. Dysregulation of this protein plays a pivotal role in the development of various solid and haematological malignancies. Furthermore, XPO1 is associated with resistance to several standard-of-care therapies, including chemotherapies and targeted therapies, making it an attractive target of novel cancer therapies. Over the years, a number of selective inhibitors of nuclear export have been developed. However, only selinexor has been clinically validated. The novel mechanism of action of XPO1 inhibitors implies a different toxicity profile to that of other agents and has proved challenging in certain settings. Nonetheless, data from clinical trials have led to the approval of the XPO1 inhibitor selinexor (plus dexamethasone) as a fifth-line therapy for patients with multiple myeloma and as a monotherapy for patients with relapsed and/or refractory diffuse large B cell lymphoma. In this Review, we summarize the progress and challenges in the development of nuclear export inhibitors and discuss the potential of emerging combination therapies and biomarkers of response.
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MESH Headings
- Antineoplastic Agents/therapeutic use
- Cell Line, Tumor
- Dexamethasone/therapeutic use
- Drug Resistance, Neoplasm/genetics
- Hematologic Neoplasms/drug therapy
- Hematologic Neoplasms/genetics
- Hematologic Neoplasms/pathology
- Humans
- Hydrazines/therapeutic use
- Karyopherins/antagonists & inhibitors
- Karyopherins/genetics
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/pathology
- Molecular Targeted Therapy
- Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors
- Receptors, Cytoplasmic and Nuclear/genetics
- Triazoles/therapeutic use
- Exportin 1 Protein
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Affiliation(s)
- Asfar S Azmi
- Karmanos Cancer Institute, Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Mohammed H Uddin
- Karmanos Cancer Institute, Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Ramzi M Mohammad
- Karmanos Cancer Institute, Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA.
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Shaikhqasem A, Schmitt K, Valerius O, Ficner R. Crystal structure of human CRM1, covalently modified by 2-mercaptoethanol on Cys528, in complex with RanGTP. Acta Crystallogr F Struct Biol Commun 2021; 77:70-78. [PMID: 33682791 PMCID: PMC7938638 DOI: 10.1107/s2053230x2100203x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 02/21/2021] [Indexed: 11/23/2022] Open
Abstract
CRM1 is a nuclear export receptor that has been intensively targeted over the last decade for the development of antitumor and antiviral drugs. Structural analysis of several inhibitor compounds bound to CRM1 revealed that their mechanism of action relies on the covalent modification of a critical cysteine residue (Cys528 in the human receptor) located in the nuclear export signal-binding cleft. This study presents the crystal structure of human CRM1, covalently modified by 2-mercaptoethanol on Cys528, in complex with RanGTP at 2.58 Å resolution. The results demonstrate that buffer components can interfere with the characterization of cysteine-dependent inhibitor compounds.
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Affiliation(s)
- Alaa Shaikhqasem
- Department for Molecular Structural Biology, Georg-August-Universität Göttingen, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany
| | - Kerstin Schmitt
- Department of Molecular Microbiology and Genetics, Georg-August-Universität Göttingen, Grisebachstrasse 8, 37077 Göttingen, Germany
| | - Oliver Valerius
- Department of Molecular Microbiology and Genetics, Georg-August-Universität Göttingen, Grisebachstrasse 8, 37077 Göttingen, Germany
| | - Ralf Ficner
- Department for Molecular Structural Biology, Georg-August-Universität Göttingen, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany
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