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Kim HS, Kim JK, Lee JH, Lee YJ, Lee GK, Han JY. Prognostic Model for High-Grade Neuroendocrine Carcinoma of the Lung Incorporating Genomic Profiling and Poly (ADP-ribose) Polymerase-1 Expression. JCO Precis Oncol 2024; 8:e2300495. [PMID: 38635931 PMCID: PMC11161257 DOI: 10.1200/po.23.00495] [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: 09/11/2023] [Revised: 02/01/2024] [Accepted: 03/05/2024] [Indexed: 04/20/2024] Open
Abstract
PURPOSE High-grade neuroendocrine carcinoma (HGNEC) of the lung is an aggressive cancer with a complex biology. We aimed to explore the prognostic value of genetic aberrations and poly(ADP-ribose) polymerase-1 (PARP1) expression in HGNEC and to establish a novel prognostic model. MATERIALS AND METHODS We retrospectively enrolled 191 patients with histologically confirmed HGNEC of the lung. Tumor tissues were analyzed using PARP1 immunohistochemistry (IHC; N = 191) and comprehensive cancer panel sequencing (n = 102). Clinical and genetic data were used to develop an integrated Cox hazards model. RESULTS Strong PARP1 IHC expression (intensity 3) was observed in 153 of 191 (80.1%) patients, and the mean PARP1 H-score was 285 (range, 5-300). To develop an integrated Cox hazard model, our data set included information from 357 gene mutations and 19 clinical profiles. When the targeted mutation profiles were combined with clinical profiles, 12 genes (ATRX, CCND2, EXT2, FGFR2, FOXO1, IL21R, MAF, TGM7, TNFAIP3, TP53, TSHR, and DDR2) were identified as prognostic factors for survival. The integrated Cox hazard model, which combines mutation profiles with a baseline model, outperformed the baseline model (incremental area under the curve 0.84 v 0.78; P = 8.79e-12). The integrated model stratified patients into high- and low-risk groups with significantly different disease-free and overall survival (integrated model: hazard ratio, 7.14 [95% CI, 4.07 to 12.54]; P < .01; baseline model: 4.38 [2.56 to 7.51]; P < .01). CONCLUSION We introduced a new prognostic model for HGNEC that combines genetic and clinical data. The integrated Cox hazard model outperformed the baseline model in predicting the survival of patients with HGNEC.
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Affiliation(s)
- Hye Sook Kim
- Division of Oncology/Hematology, Department of Internal Medicine, Ilsan Paik Hospital, Inje University, Goyang, Republic of Korea
| | - Jong Kwang Kim
- Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Jeong Hyeon Lee
- Department of Pathology, Korea University Medical Center, Anam Hospital, Seoul, Republic of Korea
| | - Young Joo Lee
- Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Geon-Kuk Lee
- Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Ji-Youn Han
- Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
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2
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Osada N, Kikuchi J, Iha H, Yasui H, Ikeda S, Takahashi N, Furukawa Y. c-FOS is an integral component of the IKZF1 transactivator complex and mediates lenalidomide resistance in multiple myeloma. Clin Transl Med 2023; 13:e1364. [PMID: 37581569 PMCID: PMC10426395 DOI: 10.1002/ctm2.1364] [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: 01/03/2023] [Revised: 07/28/2023] [Accepted: 08/06/2023] [Indexed: 08/16/2023] Open
Abstract
BACKGROUND The immunomodulatory drug lenalidomide, which is now widely used for the treatment of multiple myeloma (MM), exerts pharmacological action through the ubiquitin-dependent degradation of IKZF1 and subsequent down-regulation of interferon regulatory factor 4 (IRF4), a critical factor for the survival of MM cells. IKZF1 acts principally as a tumour suppressor via transcriptional repression of oncogenes in normal lymphoid lineages. In contrast, IKZF1 activates IRF4 and other oncogenes in MM cells, suggesting the involvement of unknown co-factors in switching the IKZF1 complex from a transcriptional repressor to an activator. The transactivating components of the IKZF1 complex might promote lenalidomide resistance by residing on regulatory regions of the IRF4 gene to maintain its transcription after IKZF1 degradation. METHODS To identify unknown components of the IKZF1 complex, we analyzed the genome-wide binding of IKZF1 in MM cells using chromatin immunoprecipitation-sequencing (ChIP-seq) and screened for the co-occupancy of IKZF1 with other DNA-binding factors on the myeloma genome using the ChIP-Atlas platform. RESULTS We found that c-FOS, a member of the activator protein-1 (AP-1) family, is an integral component of the IKZF1 complex and is primarily responsible for the activator function of the complex in MM cells. The genome-wide screening revealed the co-occupancy of c-FOS with IKZF1 on the regulatory regions of IKZF1-target genes, including IRF4 and SLAMF7, in MM cells but not normal bone marrow progenitors, pre-B cells or mature T-lymphocytes. c-FOS and IKZF1 bound to the same consensus sequence as the IKZF1 complex through direct protein-protein interactions. The complex also includes c-JUN and IKZF3 but not IRF4. Treatment of MM cells with short-hairpin RNA against FOS or a selective AP-1 inhibitor significantly enhanced the anti-MM activity of lenalidomide in vitro and in two murine MM models. Furthermore, an AP-1 inhibitor mitigated the lenalidomide resistance of MM cells. CONCLUSIONS C-FOS determines lenalidomide sensitivity and mediates drug resistance in MM cells as a co-factor of IKZF1 and thus, could be a novel therapeutic target for further improvement of the prognosis of MM patients.
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Affiliation(s)
- Naoki Osada
- Division of Stem Cell RegulationCenter for Molecular MedicineJichi Medical UniversityTochigiJapan
| | - Jiro Kikuchi
- Division of Stem Cell RegulationCenter for Molecular MedicineJichi Medical UniversityTochigiJapan
| | - Hidekatsu Iha
- Division of PathophysiologyThe Research Center for GLOBAL and LOCAL Infectious Diseases (RCGLID)Oita UniversityOitaJapan
| | - Hiroshi Yasui
- Division of Hematology and Oncology, Department of Internal MedicineSt. Marianna University School of MedicineKanagawaJapan
- Project Division of Innovative Diagnostics Technology Platform, The Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Sho Ikeda
- Department of HematologyNephrology and RheumatologyAkita University Graduate School of MedicineAkitaJapan
| | - Naoto Takahashi
- Department of HematologyNephrology and RheumatologyAkita University Graduate School of MedicineAkitaJapan
| | - Yusuke Furukawa
- Division of Stem Cell RegulationCenter for Molecular MedicineJichi Medical UniversityTochigiJapan
- Center for Medical EducationTeikyo University of ScienceTokyoJapan
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3
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Bianchi E, Rontauroli S, Tavernari L, Mirabile M, Pedrazzi F, Genovese E, Sartini S, Dall'Ora M, Grisendi G, Fabbiani L, Maccaferri M, Carretta C, Parenti S, Fantini S, Bartalucci N, Calabresi L, Balliu M, Guglielmelli P, Potenza L, Tagliafico E, Losi L, Dominici M, Luppi M, Vannucchi AM, Manfredini R. Inhibition of ERK1/2 signaling prevents bone marrow fibrosis by reducing osteopontin plasma levels in a myelofibrosis mouse model. Leukemia 2023; 37:1068-1079. [PMID: 36928007 PMCID: PMC10169646 DOI: 10.1038/s41375-023-01867-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/20/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023]
Abstract
Clonal myeloproliferation and development of bone marrow (BM) fibrosis are the major pathogenetic events in myelofibrosis (MF). The identification of novel antifibrotic strategies is of utmost importance since the effectiveness of current therapies in reverting BM fibrosis is debated. We previously demonstrated that osteopontin (OPN) has a profibrotic role in MF by promoting mesenchymal stromal cells proliferation and collagen production. Moreover, increased plasma OPN correlated with higher BM fibrosis grade and inferior overall survival in MF patients. To understand whether OPN is a druggable target in MF, we assessed putative inhibitors of OPN expression in vitro and identified ERK1/2 as a major regulator of OPN production. Increased OPN plasma levels were associated with BM fibrosis development in the Romiplostim-induced MF mouse model. Moreover, ERK1/2 inhibition led to a remarkable reduction of OPN production and BM fibrosis in Romiplostim-treated mice. Strikingly, the antifibrotic effect of ERK1/2 inhibition can be mainly ascribed to the reduced OPN production since it could be recapitulated through the administration of anti-OPN neutralizing antibody. Our results demonstrate that OPN is a novel druggable target in MF and pave the way to antifibrotic therapies based on the inhibition of ERK1/2-driven OPN production or the neutralization of OPN activity.
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Affiliation(s)
- Elisa Bianchi
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy. .,Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| | - Sebastiano Rontauroli
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Lara Tavernari
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Margherita Mirabile
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Francesca Pedrazzi
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Elena Genovese
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Stefano Sartini
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Giulia Grisendi
- Division of Oncology, Laboratory of Cellular Therapy, Department of Medical and Surgical Sciences of Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Luca Fabbiani
- Department of Medical and Surgical Sciences of Children & Adults, Pathology Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Monica Maccaferri
- Department of Laboratory Medicine and Pathology, Diagnostic Hematology and Clinical Genomics, AUSL/AOU Policlinico, 41124, Modena, Italy
| | - Chiara Carretta
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Sandra Parenti
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy.,Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Sebastian Fantini
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Niccolò Bartalucci
- Center Research and Innovation of Myeloproliferative Neoplasms (CRIMM), Department of Experimental and Clinical Medicine, AOU Careggi, University of Florence, Florence, Italy
| | - Laura Calabresi
- Center Research and Innovation of Myeloproliferative Neoplasms (CRIMM), Department of Experimental and Clinical Medicine, AOU Careggi, University of Florence, Florence, Italy
| | - Manjola Balliu
- Center Research and Innovation of Myeloproliferative Neoplasms (CRIMM), Department of Experimental and Clinical Medicine, AOU Careggi, University of Florence, Florence, Italy
| | - Paola Guglielmelli
- Center Research and Innovation of Myeloproliferative Neoplasms (CRIMM), Department of Experimental and Clinical Medicine, AOU Careggi, University of Florence, Florence, Italy
| | - Leonardo Potenza
- Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AUSL/AOU Policlinico, 41124, Modena, Italy
| | - Enrico Tagliafico
- Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AUSL/AOU Policlinico, 41124, Modena, Italy
| | - Lorena Losi
- Department of Life Sciences, Pathology Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Massimo Dominici
- Division of Oncology, Laboratory of Cellular Therapy, Department of Medical and Surgical Sciences of Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Mario Luppi
- Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AUSL/AOU Policlinico, 41124, Modena, Italy
| | - Alessandro Maria Vannucchi
- Center Research and Innovation of Myeloproliferative Neoplasms (CRIMM), Department of Experimental and Clinical Medicine, AOU Careggi, University of Florence, Florence, Italy
| | - Rossella Manfredini
- Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Modena, Italy. .,Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
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Deng Y, Lu L, Zhang H, Fu Y, Liu T, Chen Y. The role and regulation of Maf proteins in cancer. Biomark Res 2023; 11:17. [PMID: 36750911 PMCID: PMC9903618 DOI: 10.1186/s40364-023-00457-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/22/2023] [Indexed: 02/09/2023] Open
Abstract
The Maf proteins (Mafs) belong to basic leucine zipper transcription factors and are members of the activator protein-1 (AP-1) superfamily. There are two subgroups of Mafs: large Mafs and small Mafs, which are involved in a wide range of biological processes, such as the cell cycle, proliferation, oxidative stress, and inflammation. Therefore, dysregulation of Mafs can affect cell fate and is closely associated with diverse diseases. Accumulating evidence has established both large and small Mafs as mediators of tumor development. In this review, we first briefly describe the structure and physiological functions of Mafs. Then we summarize the upstream regulatory mechanisms that control the expression and activity of Mafs. Furthermore, we discuss recent studies on the critical role of Mafs in cancer progression, including cancer proliferation, apoptosis, metastasis, tumor/stroma interaction and angiogenesis. We also review the clinical implications of Mafs, namely their potential possibilities and limitations as biomarkers and therapeutic targets in cancer.
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Affiliation(s)
- Yalan Deng
- grid.452223.00000 0004 1757 7615Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Liqing Lu
- grid.452223.00000 0004 1757 7615Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China ,grid.452223.00000 0004 1757 7615Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Huajun Zhang
- grid.452223.00000 0004 1757 7615Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China ,grid.452223.00000 0004 1757 7615Department of Ultrasonic Imaging, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Ying Fu
- grid.452223.00000 0004 1757 7615Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Ting Liu
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
| | - Yongheng Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, Laboratory of Structural Biology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. .,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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5
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Roy Choudhury S, Byrum SD, Alkam D, Ashby C, Zhan F, Tackett AJ, Van Rhee F. Expression of integrin β-7 is epigenetically enhanced in multiple myeloma subgroups with high-risk cytogenetics. Clin Epigenetics 2023; 15:18. [PMID: 36737807 PMCID: PMC9898982 DOI: 10.1186/s13148-023-01433-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 01/21/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Oncogenic overexpression of integrin-β7 (ITGB7) in cases of high-risk multiple myeloma (MM) was reported to promote enhanced interactions between neoplastic plasma-B cells and stromal cells to develop cell-adhesion mediated drug resistance. METHODS Expression profiles of adhesion related genes were analyzed in a cohort of MM patients containing major IgH translocations or hyperdiploidies (HY), diagnosed at the premalignant monoclonal gammopathy of undetermined significance (MGUS; n = 103), smoldering multiple myeloma; (SMM; n = 190) or MM (MM; n = 53) stage. Differential expression was integrated with loci-specific alterations in DNA-methylation and chromatin marks in MM patients. A CRISPR-based targeted induction of DNA-methylation at the ITGB7 super-enhancer (SE) in MM.1S cells was employed to intersect the impact of cis-regulatory elements on ITGB7 expression. RESULTS ITGB7 was significantly (p < 0.05) upregulated in patients with t(14;16) and t(14;20) subgroups in all MGUS, SMM and MM stages, but sporadically upregulated in t(4;14) subgroup at the MM stage. We demonstrate a predetermined enhancer state on ITGB7 in primary-B cells that is maintained under bivalent chromatin, which undergoes a process of chromatin-state alterations and develops into an active enhancer in cases of the t(4;14) subgroup or SE in cases of the t(14;16) subgroup. We also demonstrate that while targeted induction of DNA-methylation at the ITGB7-SE further upregulated the gene, inhibition of ITGB7-SE-associated transcription factor bromodomain-4 downregulated expression of the gene. CONCLUSIONS Our findings suggest an epigenetic regulation of oncogenic overexpression of ITGB7 in MM cells, which could be critical in MM progression and an attractive therapeutic target.
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Affiliation(s)
- Samrat Roy Choudhury
- Pediatric Hematology-Oncology, Arkansas Children's Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR, 72202, USA.
| | - Stephanie D Byrum
- Pediatric Hematology-Oncology, Arkansas Children's Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR, 72202, USA
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Duah Alkam
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Cody Ashby
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Fenghuang Zhan
- Myeloma Center, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Alan J Tackett
- Pediatric Hematology-Oncology, Arkansas Children's Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR, 72202, USA
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Frits Van Rhee
- Myeloma Center, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
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Evaluation of Genes and Molecular Pathways Involved in the Progression of Monoclonal Gammopathy of Undetermined Significance (MGUS) to Multiple Myeloma: A Systems Biology Approach. Mol Biotechnol 2022:10.1007/s12033-022-00634-6. [DOI: 10.1007/s12033-022-00634-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022]
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7
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Gandhi M, Bakhai V, Trivedi J, Mishra A, De Andrés F, LLerena A, Sharma R, Nair S. Current perspectives on interethnic variability in multiple myeloma: Single cell technology, population pharmacogenetics and molecular signal transduction. Transl Oncol 2022; 25:101532. [PMID: 36103755 PMCID: PMC9478452 DOI: 10.1016/j.tranon.2022.101532] [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: 03/31/2022] [Revised: 08/31/2022] [Accepted: 09/05/2022] [Indexed: 11/15/2022] Open
Abstract
This review discusses the emerging single cell technologies and applications in Multiple myeloma (MM), population pharmacogenetics of MM, resistance to chemotherapy, genetic determinants of drug-induced toxicity, molecular signal transduction. The role(s) of epigenetics and noncoding RNAs including microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) that influence the risk and severity of MM are also discussed. It is understood that ethnic component acts as a driver of variable response to chemotherapy in different sub-populations globally. This review augments our understanding of genetic variability in ‘myelomagenesis’ and drug-induced toxicity, myeloma microenvironment at the molecular and cellular level, and developing precision medicine strategies to combat this malignancy. The emerging single cell technologies hold great promise for enhancing our understanding of MM tumor heterogeneity and clonal diversity.
Multiple myeloma (MM) is an aggressive cancer characterised by malignancy of the plasma cells and a rising global incidence. The gold standard for optimum response is aggressive chemotherapy followed by autologous stem cell transplantation (ASCT). However, majority of the patients are above 60 years and this presents the clinician with complications such as ineligibility for ASCT, frailty, drug-induced toxicity and differential/partial response to treatment. The latter is partly driven by heterogenous genotypes of the disease in different subpopulations. In this review, we discuss emerging single cell technologies and applications in MM, population pharmacogenetics of MM, resistance to chemotherapy, genetic determinants of drug-induced toxicity, molecular signal transduction, as well as the role(s) played by epigenetics and noncoding RNAs including microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) that influence the risk and severity of the disease. Taken together, our discussions further our understanding of genetic variability in ‘myelomagenesis’ and drug-induced toxicity, augment our understanding of the myeloma microenvironment at the molecular and cellular level and provide a basis for developing precision medicine strategies to combat this malignancy.
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Affiliation(s)
- Manav Gandhi
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, 6900 Lake Nona Blvd., Orlando, FL 32827, USA
| | - Viral Bakhai
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS University, V. L. Mehta Road, Vile Parle (West), Mumbai 400056, India
| | - Jash Trivedi
- University of Mumbai, Santa Cruz, Mumbai 400055, India
| | - Adarsh Mishra
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS University, V. L. Mehta Road, Vile Parle (West), Mumbai 400056, India
| | - Fernando De Andrés
- INUBE Extremadura Biosanitary Research Institute, Badajoz, Spain; Faculty of Medicine, University of Extremadura, Badajoz, Spain; CICAB Clinical Research Center, Pharmacogenetics and Personalized Medicine Unit, Badajoz University Hospital, Extremadura Health Service, Badajoz, Spain
| | - Adrián LLerena
- INUBE Extremadura Biosanitary Research Institute, Badajoz, Spain; Faculty of Medicine, University of Extremadura, Badajoz, Spain; CICAB Clinical Research Center, Pharmacogenetics and Personalized Medicine Unit, Badajoz University Hospital, Extremadura Health Service, Badajoz, Spain
| | - Rohit Sharma
- Department of Rasa Shastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India.
| | - Sujit Nair
- University of Mumbai, Santa Cruz, Mumbai 400055, India.
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8
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Jiang Q, Mao H, He G, Mao X. Targeting the oncogenic transcription factor c-Maf for the treatment of multiple myeloma. Cancer Lett 2022; 543:215791. [PMID: 35700821 DOI: 10.1016/j.canlet.2022.215791] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 11/28/2022]
Abstract
Multiple myeloma (MM) is a hematologic malignancy derived from clonal expansion of plasma cells within the bone marrow and it may progress to the extramedullary region in late stage of the disease course. c-Maf, an oncogenic zipper leucine transcription factor, is overexpressed in more than 50% MM cell lines and primary species in association with chromosomal translocation, aberrant signaling transduction and modulation of stability. By triggering the transcription of critical genes including CCND2, ITGB7, CCR1, ARK5, c-Maf promotes MM progress, proliferation, survival and chemoresistance. Notably, c-Maf is usually expressed at the embryonic stage to promote cell differentiation but less expressed in healthy adult cells. c-Maf has long been proposed as a promising therapeutic target of MM and a panel of small molecule compounds have been identified to downregulate c-Maf and display potent anti-myeloma activities. In the current article, we take a concise summary on the advances in c-Maf biology, pathophysiology, and targeted drug discovery in the potential treatment of MM.
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Affiliation(s)
- Qiuyun Jiang
- Department of Orthopaedics, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, PR China; Guangdong Institute of Cardiovascular Diseases, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, PR China; Key Laboratory of Protein Modifications and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, PR China
| | - Hongwu Mao
- Department of Orthopaedics, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, PR China
| | - Guisong He
- Department of Orthopaedics, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, PR China.
| | - Xinliang Mao
- Guangdong Institute of Cardiovascular Diseases, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, PR China; Key Laboratory of Protein Modifications and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, PR China.
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9
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Pathobiology and Therapeutic Relevance of GSK-3 in Chronic Hematological Malignancies. Cells 2022; 11:cells11111812. [PMID: 35681507 PMCID: PMC9180032 DOI: 10.3390/cells11111812] [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: 05/09/2022] [Revised: 05/28/2022] [Accepted: 05/29/2022] [Indexed: 12/10/2022] Open
Abstract
Glycogen synthase kinase-3 (GSK-3) is an evolutionarily conserved, ubiquitously expressed, multifunctional serine/threonine protein kinase involved in the regulation of a variety of physiological processes. GSK-3 comprises two isoforms (α and β) which were originally discovered in 1980 as enzymes involved in glucose metabolism via inhibitory phosphorylation of glycogen synthase. Differently from other proteins kinases, GSK-3 isoforms are constitutively active in resting cells, and their modulation mainly involves inhibition through upstream regulatory networks. In the early 1990s, GSK-3 isoforms were implicated as key players in cancer cell pathobiology. Active GSK-3 facilitates the destruction of multiple oncogenic proteins which include β-catenin and Master regulator of cell cycle entry and proliferative metabolism (c-Myc). Therefore, GSK-3 was initially considered to be a tumor suppressor. Consistently, GSK-3 is often inactivated in cancer cells through dysregulated upstream signaling pathways. However, over the past 10–15 years, a growing number of studies highlighted that in some cancer settings GSK-3 isoforms inhibit tumor suppressing pathways and therefore act as tumor promoters. In this article, we will discuss the multiple and often enigmatic roles played by GSK-3 isoforms in some chronic hematological malignancies (chronic myelogenous leukemia, chronic lymphocytic leukemia, multiple myeloma, and B-cell non-Hodgkin’s lymphomas) which are among the most common blood cancer cell types. We will also summarize possible novel strategies targeting GSK-3 for innovative therapies of these disorders.
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10
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Bhalla S, Melnekoff DT, Aleman A, Leshchenko V, Restrepo P, Keats J, Onel K, Sawyer JR, Madduri D, Richter J, Richard S, Chari A, Cho HJ, Dudley JT, Jagannath S, Laganà A, Parekh S. Patient similarity network of newly diagnosed multiple myeloma identifies patient subgroups with distinct genetic features and clinical implications. SCIENCE ADVANCES 2021; 7:eabg9551. [PMID: 34788103 PMCID: PMC8598000 DOI: 10.1126/sciadv.abg9551] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 09/29/2021] [Indexed: 05/04/2023]
Abstract
The remarkable genetic heterogeneity of multiple myeloma poses a substantial challenge for proper prognostication and clinical management of patients. Here, we introduce MM-PSN, the first multiomics patient similarity network of myeloma. MM-PSN enabled accurate dissection of the genetic and molecular landscape of the disease and determined 12 distinct subgroups defined by five data types generated from genomic and transcriptomic profiling of 655 patients. MM-PSN identified patient subgroups not previously described defined by specific patterns of alterations, enriched for specific gene vulnerabilities, and associated with potential therapeutic options. Our analysis revealed that co-occurrence of t(4;14) and 1q gain identified patients at significantly higher risk of relapse and shorter survival as compared to t(4;14) as a single lesion. Furthermore, our results show that 1q gain is the most important single lesion conferring high risk of relapse and that it can improve on the current International Staging Systems (ISS and R-ISS).
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Affiliation(s)
- Sherry Bhalla
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - David T. Melnekoff
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Adolfo Aleman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Violetta Leshchenko
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Paula Restrepo
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jonathan Keats
- Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Kenan Onel
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pediatric Hematology and Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pathology, Molecular, and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jeffrey R. Sawyer
- Myeloma Center, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Deepu Madduri
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Joshua Richter
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Shambavi Richard
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ajai Chari
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Hearn Jay Cho
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Sundar Jagannath
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alessandro Laganà
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Samir Parekh
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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11
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Chromatin-based, in cis and in trans regulatory rewiring underpins distinct oncogenic transcriptomes in multiple myeloma. Nat Commun 2021; 12:5450. [PMID: 34521827 PMCID: PMC8440555 DOI: 10.1038/s41467-021-25704-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 08/17/2021] [Indexed: 11/09/2022] Open
Abstract
Multiple myeloma is a genetically heterogeneous cancer of the bone marrow plasma cells (PC). Distinct myeloma transcriptome profiles are primarily driven by myeloma initiating events (MIE) and converge into a mutually exclusive overexpression of the CCND1 and CCND2 oncogenes. Here, with reference to their normal counterparts, we find that myeloma PC enhanced chromatin accessibility combined with paired transcriptome profiling can classify MIE-defined genetic subgroups. Across and within different MM genetic subgroups, we ascribe regulation of genes and pathways critical for myeloma biology to unique or shared, developmentally activated or de novo formed candidate enhancers. Such enhancers co-opt recruitment of existing transcription factors, which although not transcriptionally deregulated per se, organise aberrant gene regulatory networks that help identify myeloma cell dependencies with prognostic impact. Finally, we identify and validate the critical super-enhancer that regulates ectopic expression of CCND2 in a subset of patients with MM and in chronic lymphocytic leukemia. Despite extensive genetic heterogeneity, nearly half of all multiple myeloma (MM) cases are driven by cyclin D2 (CCND2) over-expression. Here the authors dissect the chromatin landscape of MM to provide insights into the transcriptional regulatory landscape driving MM and divergent transcriptomes corresponding to different MM genetic subtypes.
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12
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Richard S, Chari A, Delimpasi S, Simonova M, Spicka I, Pour L, Kriachok I, Dimopoulos MA, Pylypenko H, Auner HW, Leleu X, Usenko G, Hajek R, Benjamin R, Dolai TK, Sinha DK, Venner CP, Garg M, Stevens DA, Quach H, Jagannath S, Moreau P, Levy M, Badros A, Anderson LD, Bahlis NJ, Facon T, Mateos MV, Cavo M, Chang H, Landesman Y, Chai Y, Arazy M, Shah J, Shacham S, Kauffman MG, Grosicki S, Richardson PG. Selinexor, bortezomib, and dexamethasone versus bortezomib and dexamethasone in previously treated multiple myeloma: Outcomes by cytogenetic risk. Am J Hematol 2021; 96:1120-1130. [PMID: 34062004 PMCID: PMC8457116 DOI: 10.1002/ajh.26261] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/20/2021] [Accepted: 05/27/2021] [Indexed: 11/06/2022]
Abstract
In the phase 3 BOSTON study, patients with multiple myeloma (MM) after 1-3 prior regimens were randomized to once-weekly selinexor (an oral inhibitor of exportin 1 [XPO1]) plus bortezomib-dexamethasone (XVd) or twice-weekly bortezomib-dexamethasone (Vd). Compared with Vd, XVd was associated with significant improvements in median progression-free survival (PFS), overall response rate (ORR), and lower rates of peripheral neuropathy, with trends in overall survival (OS) favoring XVd. In BOSTON, 141 (35.1%) patients had MM with high-risk (presence of del[17p], t[4;14], t[14;16], or ≥4 copies of amp1q21) cytogenetics (XVd, n = 70; Vd, n = 71), and 261 (64.9%) exhibited standard-risk cytogenetics (XVd, n = 125; Vd, n = 136). Among patients with high-risk MM, median PFS was 12.91 months for XVd and 8.61 months for Vd (HR, 0.73 [95% CI, (0.4673, 1.1406)], p = 0.082), and ORRs were 78.6% and 57.7%, respectively (OR 2.68; p = 0.004). In the standard-risk subgroup, median PFS was 16.62 months for XVd and 9.46 months for Vd (HR 0.61; p = 0.004), and ORRs were 75.2% and 64.7%, respectively (OR 1.65; p = 0.033). The safety profiles of XVd and Vd in both subgroups were consistent with the overall population. These data suggest that selinexor can confer benefits to patients with MM regardless of cytogenetic risk. ClinicalTrials.gov identifier: NCT03110562.
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Affiliation(s)
- Shambavi Richard
- Icahn School of Medicine at Mount Sinai Tisch Cancer Institute New York New York USA
| | - Ajai Chari
- Icahn School of Medicine at Mount Sinai Tisch Cancer Institute New York New York USA
| | | | - Maryana Simonova
- Institute of Blood Pathology & Transfusion Medicine of National Academy of Medical Sciences of Ukraine Lviv Ukraine
| | - Ivan Spicka
- Charles University and General Hospital Prague Czech Republic
| | - Ludek Pour
- Clinic of Internal Medicine —Hematology and Oncology University Hospital Brno Brno Czech Republic
| | | | - Meletios A. Dimopoulos
- School of Medicine National and Kapodistrian University of Athens School of Medicine Athens Greece
| | - Halyna Pylypenko
- Department of Hematology Cherkassy Regional Oncological Center Cherkassy Ukraine
| | | | - Xavier Leleu
- Department of Hematology CHU la Miletrie and Inserm CIC 1402 Poitiers France
| | - Ganna Usenko
- City Clinical Hospital No. 4 of Dnipro City Council Dnipro Ukraine
| | - Roman Hajek
- Department of Hemato‐oncology, University Hospital Ostrava University of Ostrava Ostrava Czech Republic
| | | | | | - Dinesh Kumar Sinha
- State Cancer Institute Indira Gandhi Institute of Medical Sciences Patna India
| | | | - Mamta Garg
- University Hospitals of Leicester NHS Trust Leicester UK
| | | | - Hang Quach
- University of Melbourne, St. Vincent's Hospital Melbourne Victoria Australia
| | - Sundar Jagannath
- Icahn School of Medicine at Mount Sinai Tisch Cancer Institute New York New York USA
| | | | - Moshe Levy
- Baylor University Medical Center Dallas Texas USA
| | - Ashraf Badros
- University of Maryland, Greenebaum Comprehensive Cancer Center Baltimore Maryland USA
| | - Larry D. Anderson
- Simmons Comprehensive Cancer Center UT Southwestern Medical Center Dallas Texas USA
| | - Nizar J. Bahlis
- University of Calgary Charbonneau Cancer Research Institute Calgary Alberta Canada
| | - Thierry Facon
- CHU Lille Service des Maladies du Sang F‐59000 Lille France
| | | | - Michele Cavo
- Seràgnoli Institute of Hematology Bologna University School of Medicine Bologna Italy
| | - Hua Chang
- Karyopharm Therapeutics Inc. Newton Massachusetts USA
| | | | - Yi Chai
- Karyopharm Therapeutics Inc. Newton Massachusetts USA
| | - Melina Arazy
- Karyopharm Therapeutics Inc. Newton Massachusetts USA
| | - Jatin Shah
- Karyopharm Therapeutics Inc. Newton Massachusetts USA
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13
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Zanwar S, Kumar S. Disease heterogeneity, prognostication and the role of targeted therapy in multiple myeloma. Leuk Lymphoma 2021; 62:3087-3097. [PMID: 34304677 DOI: 10.1080/10428194.2021.1957875] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Multiple myeloma (MM) is a clonal plasma cell malignancy with a heterogeneous disease course. Insights into the genetics of the disease have identified certain high-risk cytogenetic features that are associated with adverse outcomes. While the advances in therapy have translated into dramatic improvements in the outcome of patients with MM, those with high-risk genetic features continue to perform poorly. This has resulted in a need for clinical trials focusing on the high-risk subgroup of MM as they search for additional biomarkers and therapeutic targets continue. In this review, we discuss the currently existing data on prognostic and predictive biomarkers in MM and speculate the role of treatment stratification based on the genetic features of the disease.
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Affiliation(s)
- Saurabh Zanwar
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Shaji Kumar
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
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14
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Fan F, Podar K. The Role of AP-1 Transcription Factors in Plasma Cell Biology and Multiple Myeloma Pathophysiology. Cancers (Basel) 2021; 13:2326. [PMID: 34066181 PMCID: PMC8151277 DOI: 10.3390/cancers13102326] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/02/2021] [Accepted: 05/06/2021] [Indexed: 12/19/2022] Open
Abstract
Multiple myeloma (MM) is an incurable hematologic malignancy characterized by the clonal expansion of malignant plasma cells within the bone marrow. Activator Protein-1 (AP-1) transcription factors (TFs), comprised of the JUN, FOS, ATF and MAF multigene families, are implicated in a plethora of physiologic processes and tumorigenesis including plasma cell differentiation and MM pathogenesis. Depending on the genetic background, the tumor stage, and cues of the tumor microenvironment, specific dimeric AP-1 complexes are formed. For example, AP-1 complexes containing Fra-1, Fra-2 and B-ATF play central roles in the transcriptional control of B cell development and plasma cell differentiation, while dysregulation of AP-1 family members c-Maf, c-Jun, and JunB is associated with MM cell proliferation, survival, drug resistance, bone marrow angiogenesis, and bone disease. The present review article summarizes our up-to-date knowledge on the role of AP-1 family members in plasma cell differentiation and MM pathophysiology. Moreover, it discusses novel, rationally derived approaches to therapeutically target AP-1 TFs, including protein-protein and protein-DNA binding inhibitors, epigenetic modifiers and natural products.
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Affiliation(s)
- Fengjuan Fan
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1277, Wuhan 430022, China;
| | - Klaus Podar
- Department of Internal Medicine II, University Hospital Krems, Mitterweg 10, 3500 Krems an der Donau, Austria
- Molecular Oncology and Hematology Unit, Karl Landsteiner University of Health Sciences, Dr.-Karl-Dorrek-Strasse 30, 3500 Krems an der Donau, Austria
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15
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Borisov N, Sergeeva A, Suntsova M, Raevskiy M, Gaifullin N, Mendeleeva L, Gudkov A, Nareiko M, Garazha A, Tkachev V, Li X, Sorokin M, Surin V, Buzdin A. Machine Learning Applicability for Classification of PAD/VCD Chemotherapy Response Using 53 Multiple Myeloma RNA Sequencing Profiles. Front Oncol 2021; 11:652063. [PMID: 33937058 PMCID: PMC8083158 DOI: 10.3389/fonc.2021.652063] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/19/2021] [Indexed: 12/17/2022] Open
Abstract
Multiple myeloma (MM) affects ~500,000 people and results in ~100,000 deaths annually, being currently considered treatable but incurable. There are several MM chemotherapy treatment regimens, among which eleven include bortezomib, a proteasome-targeted drug. MM patients respond differently to bortezomib, and new prognostic biomarkers are needed to personalize treatments. However, there is a shortage of clinically annotated MM molecular data that could be used to establish novel molecular diagnostics. We report new RNA sequencing profiles for 53 MM patients annotated with responses on two similar chemotherapy regimens: bortezomib, doxorubicin, dexamethasone (PAD), and bortezomib, cyclophosphamide, dexamethasone (VCD), or with responses to their combinations. Fourteen patients received both PAD and VCD; six received only PAD, and 33 received only VCD. We compared profiles for the good and poor responders and found five genes commonly regulated here and in the previous datasets for other bortezomib regimens (all upregulated in the good responders): FGFR3, MAF, IGHA2, IGHV1-69, and GRB14. Four of these genes are linked with known immunoglobulin locus rearrangements. We then used five machine learning (ML) methods to build a classifier distinguishing good and poor responders for two cohorts: PAD + VCD (53 patients), and separately VCD (47 patients). We showed that the application of FloWPS dynamic data trimming was beneficial for all ML methods tested in both cohorts, and also in the previous MM bortezomib datasets. However, the ML models build for the different datasets did not allow cross-transferring, which can be due to different treatment regimens, experimental profiling methods, and MM heterogeneity.
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Affiliation(s)
- Nicolas Borisov
- Moscow Institute of Physics and Technology, Laboratory for Translational Genomic Bioinformatics, Dolgoprudny, Russia
| | - Anna Sergeeva
- National Research Center for Hematology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Maria Suntsova
- I.M. Sechenov First Moscow State Medical University, Institute of Personalized Medicine, Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Group for Genomic Analysis of Cell Signaling Systems, Moscow, Russia
| | - Mikhail Raevskiy
- Moscow Institute of Physics and Technology, Laboratory for Translational Genomic Bioinformatics, Dolgoprudny, Russia
| | - Nurshat Gaifullin
- Department of Pathology, Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Larisa Mendeleeva
- National Research Center for Hematology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Alexander Gudkov
- I.M. Sechenov First Moscow State Medical University, Institute of Personalized Medicine, Moscow, Russia
| | - Maria Nareiko
- National Research Center for Hematology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Andrew Garazha
- Omicsway Corp., Research Department, Walnut, CA, United States
- Oncobox Ltd., Research Department, Moscow, Russia
| | - Victor Tkachev
- Omicsway Corp., Research Department, Walnut, CA, United States
- Oncobox Ltd., Research Department, Moscow, Russia
| | - Xinmin Li
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, CA, United States
| | - Maxim Sorokin
- I.M. Sechenov First Moscow State Medical University, Institute of Personalized Medicine, Moscow, Russia
- Omicsway Corp., Research Department, Walnut, CA, United States
- Oncobox Ltd., Research Department, Moscow, Russia
| | - Vadim Surin
- National Research Center for Hematology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Anton Buzdin
- I.M. Sechenov First Moscow State Medical University, Institute of Personalized Medicine, Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Group for Genomic Analysis of Cell Signaling Systems, Moscow, Russia
- Omicsway Corp., Research Department, Walnut, CA, United States
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16
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Cardona-Benavides IJ, de Ramón C, Gutiérrez NC. Genetic Abnormalities in Multiple Myeloma: Prognostic and Therapeutic Implications. Cells 2021; 10:336. [PMID: 33562668 PMCID: PMC7914805 DOI: 10.3390/cells10020336] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 01/28/2021] [Accepted: 02/01/2021] [Indexed: 12/13/2022] Open
Abstract
Some genetic abnormalities of multiple myeloma (MM) detected more than two decades ago remain major prognostic factors. In recent years, the introduction of cutting-edge genomic methodologies has enabled the extensive deciphering of genomic events in MM. Although none of the alterations newly discovered have significantly improved the stratification of the outcome of patients with MM, some of them, point mutations in particular, are promising targets for the development of personalized medicine. This review summarizes the main genetic abnormalities described in MM together with their prognostic impact, and the therapeutic approaches potentially aimed at abrogating the undesirable pathogenic effect of each alteration.
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Affiliation(s)
- Ignacio J. Cardona-Benavides
- Hematology Department, University Hospital, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.J.C.-B.); (C.d.R.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
| | - Cristina de Ramón
- Hematology Department, University Hospital, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.J.C.-B.); (C.d.R.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
| | - Norma C. Gutiérrez
- Hematology Department, University Hospital, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.J.C.-B.); (C.d.R.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
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17
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Gammacoronavirus Avian Infectious Bronchitis Virus and Alphacoronavirus Porcine Epidemic Diarrhea Virus Exploit a Cell-Survival Strategy via Upregulation of cFOS to Promote Viral Replication. J Virol 2021; 95:JVI.02107-20. [PMID: 33239458 PMCID: PMC7851560 DOI: 10.1128/jvi.02107-20] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Coronaviruses have evolved a variety of strategies to optimize cellular microenvironment for efficient replication. In this study, we report the induction of AP-1 transcription factors by coronavirus infection based on genome-wide analyses of differentially expressed genes in cells infected with avian coronavirus infectious bronchitis virus (IBV). Most members of the AP-1 transcription factors were subsequently found to be upregulated during the course of IBV and porcine epidemic diarrhea virus (PEDV) infection of cultured cells as well as in IBV-infected chicken embryos. Further characterization of the induction kinetics and functional roles of cFOS in IBV replication demonstrated that upregulation of cFOS at early to intermediate phases of IBV replication cycles suppresses IBV-induced apoptosis and promotes viral replication. Blockage of nuclear translocation of cFOS by peptide inhibitor NLSP suppressed IBV replication and apoptosis, ruling out the involvement of the cytoplasmic functions of cFOS in the replication of IBV. Furthermore, knockdown of ERK1/2 and inhibition of JNK and p38 kinase activities reduced cFOS upregulation and IBV replication. This study reveals an important function of cFOS in the regulation of coronavirus-induced apoptosis, facilitating viral replication.IMPORTANCE The ongoing pandemic of coronavirus disease 2019 (COVID-19), caused by a newly emerged zoonotic coronavirus (SARS-CoV-2), highlights the importance of coronaviruses as human and animal pathogens and our knowledge gaps in understanding the cellular mechanisms, especially mechanisms shared among human and animal coronaviruses, exploited by coronaviruses for optimal replication and enhanced pathogenicity. This study reveals that upregulation of cFOS, along with other AP-1 transcription factors, as a cell-survival strategy is such a mechanism utilized by coronaviruses during their replication cycles. Through induction and regulation of apoptosis of the infected cells at early to intermediate phases of the replication cycles, subtle but appreciable differences in coronavirus replication efficiency were observed when the expression levels of cFOS were manipulated in the infected cells. As the AP-1 transcription factors are multi-functional, further studies of their regulatory roles in proinflammatory responses may provide new insights into the pathogenesis and virus-host interactions during coronavirus infection.
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18
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Metabolic Effects of Recurrent Genetic Aberrations in Multiple Myeloma. Cancers (Basel) 2021; 13:cancers13030396. [PMID: 33494394 PMCID: PMC7865460 DOI: 10.3390/cancers13030396] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 12/17/2022] Open
Abstract
Oncogene activation and malignant transformation exerts energetic, biosynthetic and redox demands on cancer cells due to increased proliferation, cell growth and tumor microenvironment adaptation. As such, altered metabolism is a hallmark of cancer, which is characterized by the reprogramming of multiple metabolic pathways. Multiple myeloma (MM) is a genetically heterogeneous disease that arises from terminally differentiated B cells. MM is characterized by reciprocal chromosomal translocations that often involve the immunoglobulin loci and a restricted set of partner loci, and complex chromosomal rearrangements that are associated with disease progression. Recurrent chromosomal aberrations in MM result in the aberrant expression of MYC, cyclin D1, FGFR3/MMSET and MAF/MAFB. In recent years, the intricate mechanisms that drive cancer cell metabolism and the many metabolic functions of the aforementioned MM-associated oncogenes have been investigated. Here, we discuss the metabolic consequences of recurrent chromosomal translocations in MM and provide a framework for the identification of metabolic changes that characterize MM cells.
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19
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Signaling Pathway Mediating Myeloma Cell Growth and Survival. Cancers (Basel) 2021; 13:cancers13020216. [PMID: 33435632 PMCID: PMC7827005 DOI: 10.3390/cancers13020216] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 12/21/2022] Open
Abstract
Simple Summary The bone marrow (BM) microenvironment plays a crucial role in pathogenesis of multiple myeloma (MM), and delineation of the intracellular signaling pathways activated in the BM microenvironment in MM cells is essential to develop novel therapeutic strategies to improve patient outcome. Abstract The multiple myeloma (MM) bone marrow (BM) microenvironment consists of different types of accessory cells. Both soluble factors (i.e., cytokines) secreted from these cells and adhesion of MM cells to these cells play crucial roles in activation of intracellular signaling pathways mediating MM cell growth, survival, migration, and drug resistance. Importantly, there is crosstalk between the signaling pathways, increasing the complexity of signal transduction networks in MM cells in the BM microenvironment, highlighting the requirement for combination treatment strategies to blocking multiple signaling pathways.
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20
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Anwer F, Gee KM, Iftikhar A, Baig M, Russ AD, Saeed S, Zar MA, Razzaq F, Carew J, Nawrocki S, Al-Kateb H, Cavalcante Parr NN, McBride A, Valent J, Samaras C. Future of Personalized Therapy Targeting Aberrant Signaling Pathways in Multiple Myeloma. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2019; 19:397-405. [PMID: 31036508 PMCID: PMC6626550 DOI: 10.1016/j.clml.2019.03.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 02/19/2019] [Accepted: 03/17/2019] [Indexed: 12/19/2022]
Abstract
Multiple myeloma (MM) is a genetically complex disease. Identification of mutations and aberrant signaling pathways that contribute to the progression of MM and drug resistance has potential to lead to specific targets and personalized treatment. Aberrant signal pathways include RAS pathway activation due to RAS or BRAF mutations (targeted by vemurafenib alone or combined with cobimetinib), BCL-2 overexpression in t(11:14) (targeted by venetoclax), JAK2 pathway activation (targeted by ruxolitinib), NF-κB pathway activation (treated with DANFIN combined with bortezomib), MDM2 overexpression, and PI3K/mTOR pathway activation (targeted by BEZ235). Cyclin D1 (CCND1) and MYC are also emerging as key potential targets. In addition, histone deacetylase inhibitors are already in use for the treatment of MM in combination therapy, and targeted inhibition of FGFR3 (AZD4547) is effective in myeloma cells with t(4;14) translocation. Bromodomain and extra terminal (BET) protein antagonists decrease the expression of MYC and have displayed promising antimyeloma activity. A better understanding of the alterations in signaling pathways that promote MM progression will further inform the development of precision therapy for patients.
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Affiliation(s)
- Faiz Anwer
- Taussig Cancer Center, Department of Hematology, Medical Oncology, Cleveland Clinic, Cleveland, OH.
| | - Kevin Mathew Gee
- Department of Molecular and Cellular Biology, The University of Arizona, Tucson, AZ
| | - Ahmad Iftikhar
- Department of Medicine, The University of Arizona, Tucson, AZ
| | - Mirza Baig
- Department of Medicine, Summit Medical Group, Summit, NJ
| | | | - Sabina Saeed
- College of Public Health, The University of Arizona, Tucson, AZ
| | - Muhammad Abu Zar
- Department of Medicine, Division of Hematology & Oncology, The University of Arizona, Tucson, AZ
| | - Faryal Razzaq
- Department of Medicine, Division of Hematology & Oncology, The University of Arizona, Tucson, AZ
| | - Jennifer Carew
- Department of Medicine, Division of Hematology & Oncology, The University of Arizona, Tucson, AZ
| | - Steffan Nawrocki
- Department of Medicine, Division of Hematology & Oncology, The University of Arizona, Tucson, AZ
| | - Hussam Al-Kateb
- Division of Human Genetics, Children's Hospital, Cincinnati, OH
| | | | - Ali McBride
- College of Pharmacy, The University of Arizona, Tucson, AZ
| | - Jason Valent
- Taussig Cancer Center, Department of Hematology, Medical Oncology, Cleveland Clinic, Cleveland, OH
| | - Christy Samaras
- Taussig Cancer Center, Department of Hematology, Medical Oncology, Cleveland Clinic, Cleveland, OH
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21
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Li S, Vallet S, Sacco A, Roccaro A, Lentzsch S, Podar K. Targeting transcription factors in multiple myeloma: evolving therapeutic strategies. Expert Opin Investig Drugs 2019; 28:445-462. [DOI: 10.1080/13543784.2019.1605354] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shirong Li
- Division of Hematology/Oncology, Columbia University, New York, NY, USA
| | - Sonia Vallet
- Department of Internal Medicine II, University Hospital Krems, Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria
| | - Antonio Sacco
- Clinical Research Development and Phase I Unit, CREA Laboratory, ASST Spedali Civili di Brescia, Brescia, Italy
| | - Aldo Roccaro
- Clinical Research Development and Phase I Unit, CREA Laboratory, ASST Spedali Civili di Brescia, Brescia, Italy
| | - Suzanne Lentzsch
- Division of Hematology/Oncology, Columbia University, New York, NY, USA
| | - Klaus Podar
- Department of Internal Medicine II, University Hospital Krems, Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria
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22
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The biological significance of histone modifiers in multiple myeloma: clinical applications. Blood Cancer J 2018; 8:83. [PMID: 30190472 PMCID: PMC6127133 DOI: 10.1038/s41408-018-0119-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 07/20/2018] [Accepted: 07/31/2018] [Indexed: 12/12/2022] Open
Abstract
Multiple myeloma (MM) is a clonal plasma cell disorder that is characterized by a variety of genetic alterations. Recent studies have highlighted not only the importance of these genetic events but also epigenetic aberrations including DNA methylation, histone modifications, and non-coding RNAs in the biology of MM. Post-translational modifications of histone, such as methylation and acetylation, contribute to chromatin dynamics, and are modulated by histone modifying enzymes, and dysregulation of these enzymes is implicated in the pathogenesis of cancers, including MM. Histone modifiers also have non-histone substrates and enzymatically independent roles, which are also involved in tumorigenesis. Here we review and provide comprehensive insight into the biologic significance of histone methyl- and acetyl-modifiers in MM, and further provide an overview of the clinical applications of histone modifier inhibitors, especially histone deacetylase inhibitors. These findings underline the emerging roles of histone modifiers in the pathogenesis of MM, and further highlight the possibility of novel epigenetic therapies in MM.
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23
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Kumar SK, Rajkumar SV. The multiple myelomas — current concepts in cytogenetic classification and therapy. Nat Rev Clin Oncol 2018; 15:409-421. [DOI: 10.1038/s41571-018-0018-y] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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24
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Hur EH, Goo BK, Moon J, Choi Y, Hwang JJ, Kim CS, Bae KS, Choi J, Cho SY, Yang SH, Seo J, Lee G, Lee JH. Induction of immunoglobulin transcription factor 2 and resistance to MEK inhibitor in melanoma cells. Oncotarget 2018; 8:41387-41400. [PMID: 28574827 PMCID: PMC5522248 DOI: 10.18632/oncotarget.17866] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 04/11/2017] [Indexed: 12/31/2022] Open
Abstract
Primary or acquired resistance to MEK inhibitors has been a barrier to successful treatment with MEK inhibitors in many tumors. In this study, we analyzed genome-wide gene expression profiling data from 6 sensitive and 6 resistant cell lines to identify candidate genes whose expression changes are associated with responses to a MEK inhibitor, selumetinib (AZD6244). Of 62 identified differentially expressed genes, we selected Immunoglobulin Transcription Factor 2, also known as transcription factor 4 as a potential drug resistance marker for further analysis. This was because the ITF-2 expression increase in resistant cell lines was relatively high and a previous study has suggested that ITF-2 functions as an oncogene in human colon cancers. We also established an AZD6244 resistant cell line (M14/AZD-3) from an AZD6244 sensitive M14 cell line. The expression of the ITF-2 was elevated both in primary AZD6244 resistant cell line, LOX-IMVI and acquired resistant cell line, M14/AZD-3. Targeted silencing of ITF-2 by siRNA significantly enhanced susceptibility to AZD6244 in resistant cells. Wnt/β-catenin pathway was activated through direct interaction of p-ERK and GSK3β. Our results suggest that up-regulation of the ITF-2 gene expression is associated with cellular resistance to MEK inhibitors, and activation of Wnt signaling pathway through interaction of p-ERK and GSK3β seems to be a mechanism for increase of ITF-2.
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Affiliation(s)
- Eun-Hye Hur
- Department of Hematology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Bon-Kwan Goo
- Department of Hematology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Juhyun Moon
- Department of Hematology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Yunsuk Choi
- Division of Hematology and Hematological Malignancies, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Jung Jin Hwang
- Institute for Innovative Cancer Research, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Choung-Soo Kim
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyun Seop Bae
- Department of Clinical Pharmacology and Therapeutics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jene Choi
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Sang-Hwa Yang
- Department of Biotechnology, College of Life Science and Biotechnology, National Creative Research Initiatives Center for Inflammatory Response Modulation, Yonsei University, Seoul, Korea.,MD Healthcare, Inc., Seoul, Repulic of Korea
| | - Jeongbeob Seo
- Department of Medicinal Chemistry, CHABIOMED Co., LTD., Seongnam-Si, Korea
| | - Gilnam Lee
- Department of Medicinal Chemistry, CHABIOMED Co., LTD., Seongnam-Si, Korea
| | - Je-Hwan Lee
- Department of Hematology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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25
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Active enhancer and chromatin accessibility landscapes chart the regulatory network of primary multiple myeloma. Blood 2018. [PMID: 29519805 DOI: 10.1182/blood-2017-09-808063] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Multiple myeloma (MM) is an aggressive cancer that originates from antibody-secreting plasma cells. Although genetically and transcriptionally well characterized, the aberrant gene regulatory networks that underpin this disease remain poorly understood. Here, we mapped regulatory elements, open chromatin, and transcription factor (TF) footprints in primary MM cells. In comparison with normal antibody-secreting cells, MM cells displayed consistent changes in enhancer activity that are connected to superenhancer (SE)-mediated deregulation of TF genes. MM cells also displayed widespread decompaction of heterochromatin that was associated with activation of regulatory elements and in a major subset of patients' deregulation of the cyclic adenosine monophosphate pathway. Finally, building SE-associated TF-based regulatory networks allowed identification of several novel TFs that are central to MM biology. Taken together, these findings significantly add to our understanding of the aberrant gene regulatory network that underpins MM.
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26
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Targeting signaling pathways in multiple myeloma: Pathogenesis and implication for treatments. Cancer Lett 2018; 414:214-221. [DOI: 10.1016/j.canlet.2017.11.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 11/14/2017] [Accepted: 11/17/2017] [Indexed: 12/15/2022]
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27
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Cytoplasmic calcium increase via fusion with inactivated Sendai virus induces apoptosis in human multiple myeloma cells by downregulation of c-Myc oncogene. Oncotarget 2017; 7:36034-36048. [PMID: 27145280 PMCID: PMC5094981 DOI: 10.18632/oncotarget.9105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 04/16/2016] [Indexed: 12/16/2022] Open
Abstract
Because the emergence of drug resistance is a major limitation of current treatments for multiple myeloma (MM), it is necessary to continuously develop novel anticancer strategies. Here, using an inactivated Sendai virus (Hemagglutinating Virus of Japan; HVJ) envelope (HVJ-E), we discovered that increase of cytoplasmic Ca2+ by virus-cell fusion significantly induced apoptosis against human MM cells but not peripheral blood mononuclear cells from healthy donors. Interaction of F protein of HVJ-E with MM cells increased intracellular Ca2+ level of MMs by the induction of Ca2+ efflux from endoplasmic reticulum but not influx from extracellular region. The elevation of the Ca2+ cytoplasmic level induced SMAD1/5/8 phosphorylation and translocation into the nucleus, and SMAD1/5/8 and SMAD4 complex suppressed c-Myc transcription. Meanwhile, HVJ-E decreases S62 phosphorylation of c-Myc and promotes c-Myc protein degradation. Thus, HVJ-E-induced cell death of MM resulted from suppression of c-Myc by both destabilization of c-Myc protein and downregulation of c-Myc transcription. This study indicates that HVJ-E will be a promising tool for MM therapy.
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28
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The AP-1 transcription factor JunB is essential for multiple myeloma cell proliferation and drug resistance in the bone marrow microenvironment. Leukemia 2016; 31:1570-1581. [PMID: 27890927 DOI: 10.1038/leu.2016.358] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 11/08/2016] [Accepted: 11/11/2016] [Indexed: 12/13/2022]
Abstract
Despite therapeutic advances, multiple myeloma (MM) remains an incurable disease, predominantly because of the development of drug resistance. The activator protein-1 (AP-1) transcription factor family has been implicated in a multitude of physiologic processes and tumorigenesis; however, its role in MM is largely unknown. Here we demonstrate specific and rapid induction of the AP-1 family member JunB in MM cells when co-cultured with bone marrow stromal cells. Supporting a functional key role of JunB in MM pathogenesis, knockdown of JUNB significantly inhibited in vitro MM cell proliferation and survival. Consistently, induced silencing of JUNB markedly decreased tumor growth in a murine MM model of the microenvironment. Subsequent gene expression profiling revealed a role for genes associated with apoptosis, DNA replication and metabolism in driving the JunB-mediated phenotype in MM cells. Importantly, knockdown of JUNB restored the response to dexamethasone in dexamethasone-resistant MM cells. Moreover, 4-hydroxytamoxifen-induced activation of a JunB-ER fusion protein protected dexamethasone-sensitive MM cells against dexamethasone- and bortezomib-induced cytotoxicity. In summary, our results demonstrate for the first time a specific role for AP-1/JunB in MM cell proliferation, survival and drug resistance, thereby strongly supporting that this transcription factor is a promising new therapeutic target in MM.
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29
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MAF protein mediates innate resistance to proteasome inhibition therapy in multiple myeloma. Blood 2016; 128:2919-2930. [PMID: 27793878 DOI: 10.1182/blood-2016-03-706077] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 10/12/2016] [Indexed: 11/20/2022] Open
Abstract
Multiple myeloma (MM) patients with the t(14;16) translocation have a poor prognosis, and unlike other molecular subgroups, their outcome has not improved with the introduction of bortezomib (Bzb). The mechanism underlying innate resistance of MM to Bzb is unknown. In the present study, we have investigated how MAF overexpression impacts resistance to proteasome inhibitor (PI) therapy (Bzb and carfilzomib). High levels of MAF protein were found in t(14;16) cell lines; cell lines from the t(4;14) subgroup had intermediate levels, whereas cell lines from the other subgroups had low levels. High expression of MAF protein in t(14;16) was associated with significantly higher PI half-maximum inhibitory concentration values compared with other molecular subgroups. PI exposure abrogated glycogen synthase kinase 3β (GSK3β)-mediated degradation of MAF protein, resulting in increased MAF protein stability and PI resistance. Subsequent studies using loss-of-function and gain-of-function models showed that silencing MAF led to increased sensitivity to PIs, enhanced apoptosis, and activation of caspase-3, -7, -8, -9, poly (ADP-ribose) polymerase, and lamin A/C. In contrast, overexpression of MAF resulted in increased resistance to PIs and reduced apoptosis. These results define the role of MAF and GSK3 in the resistance of t(14;16) MM to PIs and identifies a novel mechanism by which MAF protein levels are regulated by PIs, which in turn confers resistance to PIs.
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30
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Gocke CB, McMillan R, Wang Q, Begum A, Penchev VR, Ali SA, Borrello I, Huff CA, Matsui W. IQGAP1 Scaffold-MAP Kinase Interactions Enhance Multiple Myeloma Clonogenic Growth and Self-Renewal. Mol Cancer Ther 2016; 15:2733-2739. [PMID: 27573425 DOI: 10.1158/1535-7163.mct-16-0323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/16/2016] [Indexed: 11/16/2022]
Abstract
Despite improved outcomes in newly diagnosed multiple myeloma, virtually all patients relapse and ultimately develop drug-resistant disease. Aberrant RAS/MAPK signaling is activated in the majority of relapsed/refractory multiple myeloma patients, but its biological consequences are not fully understood. Self-renewal, as defined by the long-term maintenance of clonogenic growth, is essential for disease relapse, and we examined the role of RAS/MAPK activation on multiple myeloma self-renewal by targeting IQ motif-containing GTPase-activating protein 1 (IQGAP1), an intracellular scaffold protein required for mutant RAS signaling. We found that loss of IQGAP1 expression decreased MAPK signaling, cell-cycle progression, and tumor colony formation. Similarly, a peptide mimicking the WW domain of IQGAP1 that interacts with ERK inhibited the clonogenic growth and self-renewal of multiple myeloma cell lines and primary clinical specimens in vitro as well as tumor-initiating cell frequency in immunodeficient mice. During multiple myeloma progression, self-renewal may be enhanced by aberrant RAS/MAPK signaling and inhibited by targeting IQGAP1. Mol Cancer Ther; 15(11); 2733-9. ©2016 AACR.
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Affiliation(s)
- Christian B Gocke
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ross McMillan
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Qiuju Wang
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Asma Begum
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Vesselin R Penchev
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Syed A Ali
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ivan Borrello
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Carol Ann Huff
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - William Matsui
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland.
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31
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Dexamethasone-induced cell death is restricted to specific molecular subgroups of multiple myeloma. Oncotarget 2016; 6:26922-34. [PMID: 26323097 PMCID: PMC4694963 DOI: 10.18632/oncotarget.4616] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 07/06/2015] [Indexed: 12/12/2022] Open
Abstract
Due to its cytotoxic effect in lymphoid cells, dexamethasone is widely used in the treatment of multiple myeloma (MM). However, only a subset of myeloma patients responds to high-dose dexamethasone. Despite the undeniable anti-myeloma benefits of dexamethasone, significant adverse effects have been reported. We re-evaluate the anti-tumor effect of dexamethasone according to the molecular heterogeneity of MM. We demonstrated that the pro-death effect of dexamethasone is related to the genetic heterogeneity of MM because sensitive cell lines were restricted to MAF and MMSET signature subgroups, whereas all CCND1 cell lines (n = 10) were resistant to dexamethasone. We demonstrated that the glucocorticoid receptor expression was an important limiting factor for dexamethasone-induced cell death and we found a correlation between glucocorticoid receptor levels and the induction of glucocorticoid-induced leucine zipper (GILZ) under dexamethasone treatment. By silencing GILZ, we next demonstrated that GILZ is necessary for Dex induced apoptosis while triggering an imbalance between anti- and pro-apoptotic Bcl-2 proteins. Finally, the heterogeneity of the dexamethasone response was further confirmed in vivo using myeloma xenograft models. Our findings suggested that the effect of dexamethasone should be re-evaluated within molecular subgroups of myeloma patients to improve its efficacy and reduce its adverse effects.
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32
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Shi Y, Daniels-Wells TR, Frost P, Lee J, Finn RS, Bardeleben C, Penichet ML, Jung ME, Gera J, Lichtenstein A. Cytotoxic Properties of a DEPTOR-mTOR Inhibitor in Multiple Myeloma Cells. Cancer Res 2016; 76:5822-5831. [PMID: 27530328 DOI: 10.1158/0008-5472.can-16-1019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 07/15/2016] [Indexed: 11/16/2022]
Abstract
DEPTOR is a 48 kDa protein that binds to mTOR and inhibits this kinase in TORC1 and TORC2 complexes. Overexpression of DEPTOR specifically occurs in a model of multiple myeloma. Its silencing in multiple myeloma cells is sufficient to induce cytotoxicity, suggesting that DEPTOR is a potential therapeutic target. mTORC1 paralysis protects multiple myeloma cells against DEPTOR silencing, implicating mTORC1 in the critical role of DEPTOR in multiple myeloma cell viability. Building on this foundation, we interrogated a small-molecule library for compounds that prevent DEPTOR binding to mTOR in a yeast-two-hybrid assay. One compound was identified that also prevented DEPTOR-mTOR binding in human myeloma cells, with subsequent activation of mTORC1 and mTORC2. In a surface plasmon resonance (SPR) assay, the compound bound to recombinant DEPTOR but not to mTOR. The drug also prevented binding of recombinant DEPTOR to mTOR in the SPR assay. Remarkably, although activating TORC1 and TORC2, the compound induced apoptosis and cell-cycle arrest in multiple myeloma cell lines and prevented outgrowth of human multiple myeloma cells in immunodeficient mice. In vitro cytotoxicity against multiple myeloma cell lines was directly correlated with DEPTOR protein expression and was mediated, in part, by the activation of TORC1 and induction of p21 expression. Additional cytotoxicity was seen against primary multiple myeloma cells, whereas normal hematopoietic colony formation was unaffected. These results further support DEPTOR as a viable therapeutic target in multiple myeloma and suggest an effective strategy of preventing binding of DEPTOR to mTOR. Cancer Res; 76(19); 5822-31. ©2016 AACR.
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Affiliation(s)
- Yijiang Shi
- Department of Hematology-Oncology, University of California at Los Angeles, Los Angeles, California
| | - Tracy R Daniels-Wells
- Department of Surgery, University of California at Los Angeles, Los Angeles, California
| | - Patrick Frost
- Department of Hematology-Oncology, University of California at Los Angeles, Los Angeles, California
| | - Jihye Lee
- Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, California
| | - Richard S Finn
- Department of Hematology-Oncology, University of California at Los Angeles, Los Angeles, California
| | - Carolyne Bardeleben
- Department of Hematology-Oncology, University of California at Los Angeles, Los Angeles, California
| | - Manuel L Penichet
- Department of Surgery, University of California at Los Angeles, Los Angeles, California. Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles, Los Angeles, California
| | - Michael E Jung
- Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, California
| | - Joseph Gera
- Department of Hematology-Oncology, University of California at Los Angeles, Los Angeles, California
| | - Alan Lichtenstein
- Department of Hematology-Oncology, University of California at Los Angeles, Los Angeles, California.
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33
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Holkova B, Zingone A, Kmieciak M, Bose P, Badros AZ, Voorhees PM, Baz R, Korde N, Lin HY, Chen JQ, Herrmann M, Xi L, Raffeld M, Zhao X, Wan W, Tombes MB, Shrader E, Weir-Wiggins C, Sankala H, Hogan KT, Doyle A, Annunziata CM, Wellons M, Roberts JD, Sullivan D, Landgren O, Grant S. A Phase II Trial of AZD6244 (Selumetinib, ARRY-142886), an Oral MEK1/2 Inhibitor, in Relapsed/Refractory Multiple Myeloma. Clin Cancer Res 2015; 22:1067-75. [PMID: 26446942 DOI: 10.1158/1078-0432.ccr-15-1076] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 09/06/2015] [Indexed: 12/19/2022]
Abstract
PURPOSE AZD6244 is a MEK1/2 inhibitor with significant preclinical activity in multiple myeloma cells. This phase II study used a two-stage Simon design to determine the AZD6244 response rate in patients with relapsed or refractory multiple myeloma. EXPERIMENTAL DESIGN AZD6244 (75 mg) was administered orally, twice a day, continuously for 28-day cycles. Response was evaluated after three cycles. RESULTS Thirty-six patients received therapy. The median age was 65 years (range: 43-81) and the median number of prior therapies was 5 (range: 2-11). The most common grade 3 and 4 toxicities included anemia, neutropenia, thrombocytopenia, diarrhea, and fatigue. Three deaths occurred possibly related to AZD6244 (2 due to sepsis, 1 due to acute kidney injury). After AZD6244 discontinuation, three additional deaths occurred due to disease progression. The response rate (CR + PR) was 5.6% with a mean duration of response of 4.95 months and median progression-free survival time of 3.52 months. One patient had a very good partial response (VGPR), 1 patient had a partial response, 17 patients had stable disease, 13 patients had progressive disease, and 4 patients could not be assessed for response. Pharmacodynamic studies revealed variable effects on bone marrow CD138(+) cell MEK1/2 and ERK1/2 phosphorylation. The best clinical response, a prolonged VGPR, occurred in a patient with an MMSET translocation. CONCLUSIONS Single-agent AZD6244 was tolerable and had minimal activity in this heavily pretreated population.
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Affiliation(s)
- Beata Holkova
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia. Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia.
| | - Adriana Zingone
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Maciej Kmieciak
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - Prithviraj Bose
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia. Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Ashraf Z Badros
- Department of Medicine, Greenebaum Cancer Center, University of Maryland, Baltimore, Maryland
| | - Peter M Voorhees
- Department of Medicine, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Rachid Baz
- Chemical Biology and Molecular Medicine Program, H. Lee Moffitt Cancer Center, Tampa, Florida
| | - Neha Korde
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Hui-Yi Lin
- Department of Biostatistics and Biomedical Informatics, H. Lee Moffitt Cancer Center, Tampa, Florida
| | - Jin-Qiu Chen
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Michelle Herrmann
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Liqiang Xi
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Mark Raffeld
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Xiuhua Zhao
- Department of Biostatistics and Biomedical Informatics, H. Lee Moffitt Cancer Center, Tampa, Florida
| | - Wen Wan
- Department of Biostatistics, Virginia Commonwealth University, Richmond, Virginia
| | - Mary Beth Tombes
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - Ellen Shrader
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - Caryn Weir-Wiggins
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - Heidi Sankala
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - Kevin T Hogan
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - Austin Doyle
- Cancer Therapy Evaluation Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Christina M Annunziata
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Martha Wellons
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia
| | - John D Roberts
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia. Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Daniel Sullivan
- Chemical Biology and Molecular Medicine Program, H. Lee Moffitt Cancer Center, Tampa, Florida
| | - Ola Landgren
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Steven Grant
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia. Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia. Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia. Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia. Institute for Molecular Medicine, Virginia Commonwealth University, Richmond, Virginia.
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34
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Common genetic variants in 11q13.3 and 9q22.33 are associated with molecular subgroups of multiple myeloma. Leukemia 2015; 29:2418-21. [PMID: 26308770 DOI: 10.1038/leu.2015.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Heuck CJ, Jethava Y, Khan R, van Rhee F, Zangari M, Chavan S, Robbins K, Miller SE, Matin A, Mohan M, Ali SM, Stephens PJ, Ross JS, Miller VA, Davies F, Barlogie B, Morgan G. Inhibiting MEK in MAPK pathway-activated myeloma. Leukemia 2015; 30:976-80. [PMID: 26228812 PMCID: PMC4832073 DOI: 10.1038/leu.2015.208] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- C J Heuck
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Y Jethava
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - R Khan
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - F van Rhee
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - M Zangari
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - S Chavan
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - K Robbins
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - S E Miller
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - A Matin
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - M Mohan
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - S M Ali
- Foundation Medicine, Inc., Cambridge, MA, USA
| | | | - J S Ross
- Foundation Medicine, Inc., Cambridge, MA, USA.,Department of Pathology, Albany Medical College, Albany, NY, USA
| | - V A Miller
- Foundation Medicine, Inc., Cambridge, MA, USA
| | - F Davies
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - B Barlogie
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - G Morgan
- Myeloma Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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36
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Abstract
Does the dogma that multiple myeloma is incurable still hold?. The genomic chaos and resulting resistance to apoptosis of myeloma, long considered an obstacle to cure, formed the basis of Total Therapy (TT) program. The TT approach uses all myeloma-active drugs upfront to target drug-resistant subclones during initial treatment to prevent later relapse. Long-term follow-up of 1202 patients (TT1: n = 231, median follow-up: 21 years; TT2: 668, median follow-up: 12 years; TT3a: n = 303, median follow-up: 9 years) permitted investigation of whether progression-free survival (PFS) and complete response (CR) duration were consistent with curability, ie observation of plateaus in Kaplan-Meier plots for PFS and CR duration. In the subset of 627 patients with plasma cell gene expression profiling data, cure plateaus were apparent at 5 years in the 14% with high-risk myeloma compared with 10 years in the remainder with low-risk disease. A parametric model based on PFS and CR duration supported an increase in curability: 10-year PFS and CR estimates increased from 8.8%/17.9% in TT1 to 15.5%/28.2% in TT2's control arm to 25.1%/35.6% in TT2's thalidomide arm and to 32.9%/48.8% in TT3a. Toward developing novel therapies, we recommend a concerted focus on patients with high-risk myeloma whose outcome has not been advanced.
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37
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Cohen K, Ellis M, Shinderman E, Khoury S, Davis PJ, Hercbergs A, Ashur-Fabian O. Relevance of the thyroid hormones-αvβ3 pathway in primary myeloma bone marrow cells and to bortezomib action. Leuk Lymphoma 2014; 56:1107-14. [PMID: 25058375 DOI: 10.3109/10428194.2014.947612] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Thyroid hormones (T3 and T4) induce proliferation in multiple myeloma (MM) cell lines via the αvβ3 integrin-mitogen-activated protein kinase (MAPK) pathway. We further show in primary MM bone marrow (BM) samples (n = 9) induction of cell viability by 1 nM T3 (13%, p < 0.002) and more potently by 100 nM T4 (21-45%, p < 0.0002) and a quick (1 h) and long-lasting (24 h) pERK activation, which was inhibited in the presence of β3 but not β1 blocking antibodies. Involvement of the integrin was further shown by two disintegrins, Arg-Gly-Asp (RGD) and echistatin peptides, which occluded the effects of T3/T4 on viability, proliferating cell nuclear antigen (PCNA) (proliferation marker) and apoptotic gene expression. Lastly, T3/T4 significantly opposed bortezomib (25 nM) cytotoxicy, as confirmed by several methods. In summary, our results imply that endogenous thyroid hormones in myeloma are factors that may support cell growth, with relevance to bortezomib action.
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Affiliation(s)
- Keren Cohen
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center , Kfar-Saba , Israel
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38
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MAF mediates crosstalk between Ras-MAPK and mTOR signaling in NF1. Oncogene 2014; 33:5626-36. [PMID: 24509877 PMCID: PMC4127377 DOI: 10.1038/onc.2013.506] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 10/10/2013] [Accepted: 10/23/2013] [Indexed: 01/27/2023]
Abstract
Mutations in the neurofibromatosis type 1 (NF1 tumor suppressor gene are common in cancer, and can cause resistance to therapy. Using transcriptome analysis we identified MAF as an NF1 regulated transcription factor, and verified MAF regulation through RAS/MAPK/AP-1 signaling in malignant peripheral nerve sheath tumor (MPNST) cell lines. MAF was also downregulated in human MPNST. Acute re-expression of MAF promoted expression of glial differentiation markers in MPNST cells in vitro, decreased self-renewal of embryonic precursors and transiently affected tumor cell phenotypes in vitro by increasing MPNST cell death and reducing metabolic activity and anchorage independent growth. Paradoxically, chronic MAF overexpression enhanced MPNST cell tumor growth in vivo, correlating with elevated pS6 in vitro and in vivo. RAD001 blocked MAF-mediated tumor growth, and MAF regulated the mTOR pathway through DEPTOR. MAPK inhibition with NF1 loss of function is predicted to show limited efficacy due to reactivation of mTOR signaling via MAF.
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39
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GSK3-mediated MAF phosphorylation in multiple myeloma as a potential therapeutic target. Blood Cancer J 2014; 4:e175. [PMID: 24442204 PMCID: PMC3913936 DOI: 10.1038/bcj.2013.67] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 10/22/2013] [Accepted: 10/30/2013] [Indexed: 01/12/2023] Open
Abstract
Multiple myeloma (MM) is an incurable haematological malignancy characterised by the proliferation of mature antibody-secreting plasma B cells in the bone marrow. MM can arise from initiating translocations, of which the musculoaponeurotic fibrosarcoma (MAF) family is implicated in ∼5%. MMs bearing Maf translocations are of poor prognosis. These translocations are associated with elevated Maf expression, including c-MAF, MAFB and MAFA, and with t(14;16) and t(14;20) translocations, involving c-MAF and MAFB, respectively. c-MAF is also overexpressed in MM through MEK/ERK activation, bringing the number of MMs driven by the deregulation of a Maf gene close to 50%. Here we demonstrate that MAFB and c-MAF are phosphorylated by the Ser/Thr kinase GSK3 in human MM cell lines. We show that LiCl-induced GSK3 inhibition targets these phosphorylations and specifically decreases proliferation and colony formation of Maf-expressing MM cell lines. Interestingly, bortezomib induced stabilisation of Maf phosphorylation, an observation that could explain, at least partially, the low efficacy of bortezomib for patients carrying Maf translocations. Thus, GSK3 inhibition could represent a new therapeutic approach for these patients.
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40
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Lohr JG, Stojanov P, Carter SL, Cruz-Gordillo P, Lawrence MS, Auclair D, Sougnez C, Knoechel B, Gould J, Saksena G, Cibulskis K, McKenna A, Chapman MA, Straussman R, Levy J, Perkins LM, Keats JJ, Schumacher SE, Rosenberg M, Getz G, Golub TR. Widespread genetic heterogeneity in multiple myeloma: implications for targeted therapy. Cancer Cell 2014; 25:91-101. [PMID: 24434212 PMCID: PMC4241387 DOI: 10.1016/j.ccr.2013.12.015] [Citation(s) in RCA: 748] [Impact Index Per Article: 74.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 10/09/2013] [Accepted: 12/23/2013] [Indexed: 01/17/2023]
Abstract
We performed massively parallel sequencing of paired tumor/normal samples from 203 multiple myeloma (MM) patients and identified significantly mutated genes and copy number alterations and discovered putative tumor suppressor genes by determining homozygous deletions and loss of heterozygosity. We observed frequent mutations in KRAS (particularly in previously treated patients), NRAS, BRAF, FAM46C, TP53, and DIS3 (particularly in nonhyperdiploid MM). Mutations were often present in subclonal populations, and multiple mutations within the same pathway (e.g., KRAS, NRAS, and BRAF) were observed in the same patient. In vitro modeling predicts only partial treatment efficacy of targeting subclonal mutations, and even growth promotion of nonmutated subclones in some cases. These results emphasize the importance of heterogeneity analysis for treatment decisions.
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Affiliation(s)
- Jens G Lohr
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA; Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA
| | - Petar Stojanov
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA; Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA
| | - Scott L Carter
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Peter Cruz-Gordillo
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Michael S Lawrence
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Daniel Auclair
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Carrie Sougnez
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Birgit Knoechel
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA; Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA; Boston Children's Hospital, 350 Longwood Avenue, Boston, MA 02115, USA
| | - Joshua Gould
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Gordon Saksena
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Kristian Cibulskis
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Aaron McKenna
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Michael A Chapman
- Cambridge Institute for Medical Research, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0XY, UK
| | - Ravid Straussman
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | - Joan Levy
- The Multiple Myeloma Research Foundation, 383 Main Avenue, Fifth Floor, Norwalk, CT 06581, USA
| | - Louise M Perkins
- The Multiple Myeloma Research Foundation, 383 Main Avenue, Fifth Floor, Norwalk, CT 06581, USA
| | - Jonathan J Keats
- Translational Genomics Research Institute (TGen), 445 N. Fifth Street, Phoenix, AZ 85004, USA
| | - Steven E Schumacher
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA; Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA
| | - Mara Rosenberg
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA
| | | | - Gad Getz
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA; Massachusetts General Hospital Cancer Center and Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Todd R Golub
- Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02412, USA; Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA; Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.
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41
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Lawasut P, Groen RWJ, Dhimolea E, Richardson PG, Anderson KC, Mitsiades CS. Decoding the pathophysiology and the genetics of multiple myeloma to identify new therapeutic targets. Semin Oncol 2013; 40:537-48. [PMID: 24135398 DOI: 10.1053/j.seminoncol.2013.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In recent years, significant progress has been achieved in the characterization of the transcriptional profiles, gene mutations and structural chromosomal lesions in myeloma cells. These studies have identified many candidate therapeutic targets, which are recurrently deregulated in myeloma cells. However, these targets do not appear, at least individually, to represent universal driver(s) of this disease. Furthermore, evaluation of these recurrent lesions does not suggest that they converge to a single molecular pathway. Detailed integration of molecular and functional data for these candidate targets and pathways will hopefully dissect which of them play more critical roles for each of the different individual molecular defined subtypes of this disease. This review focuses on how recent updates in our understanding of myeloma pathogenesis and molecular characterization may impact ongoing and future efforts to develop new therapeutics for this disease.
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Affiliation(s)
- Panisinee Lawasut
- Department of Medical Oncology, Dana-Farber Cancer Institute, and Department of Medicine, Harvard Medical School, Boston, MA; Division of Hematology, Department of Medicine, Faculty of Medicine, King Chulalongkorn Memorial Hospital and Chulalongkorn University, Thai Red Cross Society, Bangkok, Thailand
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42
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Simmons JK, Patel J, Michalowski A, Zhang S, Wei BR, Sullivan P, Gamache B, Felsenstein K, Kuehl WM, Simpson RM, Zingone A, Landgren O, Mock BA. TORC1 and class I HDAC inhibitors synergize to suppress mature B cell neoplasms. Mol Oncol 2013; 8:261-72. [PMID: 24429254 DOI: 10.1016/j.molonc.2013.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 11/20/2013] [Accepted: 11/21/2013] [Indexed: 12/12/2022] Open
Abstract
Enhanced proliferative signaling and loss of cell cycle regulation are essential for cancer progression. Increased mitogenic signaling through activation of the mTOR pathway, coupled with deregulation of the Cyclin D/retinoblastoma (Rb) pathway is a common feature of lymphoid malignancies, including plasmacytoma (PCT), multiple myeloma (MM), Burkitt's lymphoma (BL), and mantle cell lymphoma (MCL). Here we evaluate the synergy of pharmacologically affecting both of these critical pathways using the mTOR inhibitor sirolimus and the histone deacetylase inhibitor entinostat. A dose-matrix screening approach found this combination to be highly active and synergistic in a panel of genetically diverse human MM cell lines. Synergy and activity was observed in mouse PCT and human BL and MCL cell lines tested in vitro, as well as in freshly isolated primary MM patient samples tested ex vivo. This combination had minimal effects on healthy donor cells and retained activity when tested in a co-culture system simulating the protective interaction of cancer cells with the tumor microenvironment. Combining sirolimus with entinostat enhanced cell cycle arrest and apoptosis. At the molecular level, entinostat increased the expression of cell cycle negative regulators including CDKN1A (p21) and CDKN2A (p16), while the combination decreased critical growth and survival effectors including Cyclin D, BCL-XL, BIRC5, and activated MAPK.
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Affiliation(s)
- John K Simmons
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Jyoti Patel
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Aleksandra Michalowski
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Shuling Zhang
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Bih-Rong Wei
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Patrick Sullivan
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Ben Gamache
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Kenneth Felsenstein
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - W Michael Kuehl
- Genetics Branch, National Cancer Institute, National Institutes of Health, USA
| | - R Mark Simpson
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Adriana Zingone
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, USA
| | - Ola Landgren
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, USA
| | - Beverly A Mock
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA.
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43
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Inagaki A, Tajima E, Uranishi M, Totani H, Asao Y, Ogura H, Masaki A, Yoshida T, Mori F, Ito A, Yano H, Ri M, Kayukawa S, Kataoka T, Kusumoto S, Ishida T, Hayami Y, Hanamura I, Komatsu H, Inagaki H, Matsuda Y, Ueda R, Iida S. Global real-time quantitative reverse transcription-polymerase chain reaction detecting proto-oncogenes associated with 14q32 chromosomal translocation as a valuable marker for predicting survival in multiple myeloma. Leuk Res 2013; 37:1648-55. [PMID: 24210217 DOI: 10.1016/j.leukres.2013.09.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/17/2013] [Accepted: 09/28/2013] [Indexed: 11/25/2022]
Abstract
CCND1, FGFR3 and c-MAF mRNA expression of tumor samples from 123 multiple myeloma patients were analyzed by global RQ/RT-PCR. CCND1, FGFR3 and c-MAF were positive in 44 (36%), 28 (23%) and 16 (13%) of patients, respectively. In 7 patients, both FGFR3 and c-MAF were positive. The expression of c-MAF was independent unfavorable prognostic factors for overall survival (OS). Autologous stem cell transplantation improved progression-free survival of CCND1-positive patients. Bortezomib, thalidomide or lenalidomide extended OS of FGFR3 and/or c-MAF-positive patients. Thus, CCND1, FGFR3 and c-MAF mRNA expression can predict survival and is useful for planning stratified treatment strategies for myeloma patients.
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Affiliation(s)
- Atsushi Inagaki
- Department of Medical Oncology and Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya City, Japan.
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44
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Yasmeen R, Meyers JM, Alvarez CE, Thomas JL, Bonnegarde-Bernard A, Alder H, Papenfuss TL, Benson DM, Boyaka PN, Ziouzenkova O. Aldehyde dehydrogenase-1a1 induces oncogene suppressor genes in B cell populations. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:3218-3227. [PMID: 24080087 DOI: 10.1016/j.bbamcr.2013.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 09/18/2013] [Accepted: 09/19/2013] [Indexed: 12/11/2022]
Abstract
The deregulation of B cell differentiation has been shown to contribute to autoimmune disorders, hematological cancers, and aging. We provide evidence that the retinoic acid-producing enzyme aldehyde dehydrogenase 1a1 (Aldh1a1) is an oncogene suppressor in specific splenic IgG1(+)/CD19(-) and IgG1(+)/CD19(+) B cell populations. Aldh1a1 regulated transcription factors during B cell differentiation in a sequential manner: 1) retinoic acid receptor alpha (Rara) in IgG1(+)/CD19(-) and 2) zinc finger protein Zfp423 and peroxisome proliferator-activated receptor gamma (Pparg) in IgG1(+)/CD19(+) splenocytes. In Aldh1a1(-/-) mice, splenic IgG1(+)/CD19(-) and IgG1(+)/CD19(+) B cells acquired expression of proto-oncogenic genes c-Fos, c-Jun, and Hoxa10 that resulted in splenomegaly. Human multiple myeloma B cell lines also lack Aldh1a1 expression; however, ectopic Aldh1a1 expression rescued Rara and Znf423 expressions in these cells. Our data highlight a mechanism by which an enzyme involved in vitamin A metabolism can improve B cell resistance to oncogenesis.
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Affiliation(s)
- R Yasmeen
- Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - J M Meyers
- Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - C E Alvarez
- Center for Molecular and Human Genetics, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205, USA; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - J L Thomas
- Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - A Bonnegarde-Bernard
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - H Alder
- Nucleic Acid Shared Resource, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - T L Papenfuss
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - D M Benson
- Division of Hematology, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - P N Boyaka
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - O Ziouzenkova
- Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA.
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45
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Boyd KD, Pawlyn C, Morgan GJ, Davies FE. Understanding the molecular biology of myeloma and its therapeutic implications. Expert Rev Hematol 2013; 5:603-17. [PMID: 23216592 DOI: 10.1586/ehm.12.51] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Myeloma develops due to the accumulation of multiple pathological genetic events, many of which have been defined. Hyperdiploidy and reciprocal translocations centered on the immunoglobulin heavy chain variable region constitute primary genetic lesions. These primary lesions co-operate with secondary genetic events including chromosomal deletions and gains, gene mutations and epigenetic modifiers such as DNA methylation to produce the malignant phenotype of myeloma. Some of these events have been linked with distinct clinical outcome and can be used to define patient groups. This review explores the molecular biology of myeloma and identifies how genetic lesions can be used to define high- and low-risk patient groups, and also defines potential targets for therapy. The authors also explore how this information can be used to guide therapeutic decision-making and the design and interpretation of clinical trials, both now and in the future.
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Affiliation(s)
- Kevin D Boyd
- The Institute of Cancer Research, Brookes Lawley Building, 15 Cotswold Road, Sutton, Surrey, UK
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46
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Chang-Yew Leow C, Gerondakis S, Spencer A. MEK inhibitors as a chemotherapeutic intervention in multiple myeloma. Blood Cancer J 2013; 3:e105. [PMID: 23524590 PMCID: PMC3615214 DOI: 10.1038/bcj.2013.1] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The Ras/Raf/MEK/extracellular signal regulated kinase (ERK) (Ras/mitogen-activated protein kinases (MAPK)) signal transduction pathway is a crucial mediator of many fundamental biological processes, including cellular proliferation, survival, angiogenesis and migration. Aberrant signalling through the Ras/MAPK cascade is common in a wide array of malignancies, including multiple myeloma (MM), making it an appealing candidate for the development of novel targeted therapies. In this review, we explore our current understanding of the Ras/MAPK pathway and its role in MM. Additionally, we summarise the current status of small molecule inhibitors of MEK under clinical evaluation, and discuss future approaches required to optimise their use.
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Affiliation(s)
- C Chang-Yew Leow
- Myeloma Research Group, Australian Centre for Blood Diseases and Division of Blood Cancers, The Alfred Hospital, Melbourne, Victoria, Australia
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47
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Kaiser MF, Walker BA, Hockley SL, Begum DB, Wardell CP, Gonzalez D, Ross FM, Davies FE, Morgan GJ. A TC classification-based predictor for multiple myeloma using multiplexed real-time quantitative PCR. Leukemia 2013; 27:1754-7. [PMID: 23318961 DOI: 10.1038/leu.2013.12] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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48
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Therapeutic potential of MEK inhibition in acute myelogenous leukemia: rationale for "vertical" and "lateral" combination strategies. J Mol Med (Berl) 2012; 90:1133-44. [PMID: 22399013 DOI: 10.1007/s00109-012-0886-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 02/08/2012] [Accepted: 02/14/2012] [Indexed: 02/03/2023]
Abstract
In hematological malignancies, constitutive activation of the RAF/MEK/ERK pathway is frequently observed, conveys a poor prognosis, and constitutes a promising target for therapeutic intervention. Here, we investigated the molecular and functional effects of pharmacological MEK inhibition in cell line models of acute myeloid leukemia (AML) and freshly isolated primary AML samples. The small-molecule, ATP-non-competitive, MEK inhibitor PD0325901 markedly inhibited ERK phosphorylation and growth of several AML cell lines and approximately 70 % of primary AML samples. Growth inhibition was due to G(1)-phase arrest and induction of apoptosis. Transformation by constitutively active upstream pathway elements (HRAS, RAF-1, and MEK) rendered FDC-P1 cells exquisitely prone to PD0325901-induced apoptosis. Gene and protein expression profiling revealed a selective effect of PD0325901 on ERK phosphorylation and compensatory upregulation of the RAF/MEK and AKT/p70( S6K ) kinase modules, potentially mediating resistance to drug-induced growth inhibition. Consequently, in appropriate cellular contexts, both "vertical" (i.e., inhibition of RAF and MEK along the MAPK pathway) and "lateral" (i.e., simultaneous inhibition of the MEK/ERK and mTOR pathways) combination strategies may result in synergistic anti-leukemic effects. Overall, MEK inhibition exerts potent growth inhibitory and proapoptotic activity in preclinical models of AML, particularly in combination with other pathway inhibitors. Deeper understanding of the molecular mechanisms of action of MEK inhibitors will likely translate into more effective targeted strategies for the treatment of AML.
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49
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Steinbrunn T, Stühmer T, Sayehli C, Chatterjee M, Einsele H, Bargou RC. Combined targeting of MEK/MAPK and PI3K/Akt signalling in multiple myeloma. Br J Haematol 2012; 159:430-40. [PMID: 22985491 DOI: 10.1111/bjh.12039] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 07/24/2012] [Indexed: 01/20/2023]
Abstract
So-called RAS-dependent pathways, such as those signalling via mitogen-activated protein kinase kinase (MEK)/mitogen-activated protein kinase (MAPK) and phosphoinositide-3 kinase (PI3K)/Akt, are implicated in proliferation and survival of multiple myeloma (MM) cells. However, the effects of their combined blockade and its potential therapeutic utility for the treatment of RAS-mutated MM have not systematically been analysed. Here, we tested the functional consequences of single versus combined inhibition of the MEK/MAPK and PI3K/Akt pathways in a large series of primary MM samples (n = 55) and MM cell lines (n = 11). Additionally, the anti-myeloma activity of different treatments was analysed with respect to the RAS mutation status. PI3K/Akt blockade was generally more pro-apoptotic than blockade of MEK/MAPK both in cell lines and in primary MM samples. Simultaneous blockade of both pathways led to significantly enhanced anti-myeloma activity in 75% of primary MM samples, whereas the remainder was largely resistant. Resistance to combination blockade was exclusively observed in RAS wildtype cases, whereas sensitivity was noted in RAS wildtype and in RAS mutated MM. These results suggest that oncogenic RAS is a predictor of sensitivity to combination treatment with PI3K/Akt and MEK/MAPK inhibitors and that such an approach might therefore be beneficial for this genetically well-defined subgroup of MM patients.
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Affiliation(s)
- Torsten Steinbrunn
- Department of Internal Medicine II, Comprehensive Cancer Centre Mainfranken, University Hospital of Würzburg, Würzburg, Germany.
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50
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Bianchi G, Ghobrial IM. Molecular mechanisms of effectiveness of novel therapies in multiple myeloma. Leuk Lymphoma 2012; 54:229-41. [DOI: 10.3109/10428194.2012.706287] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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