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Yang T, Liu X, Kumar SK, Jin F, Dai Y. Decoding DNA methylation in epigenetics of multiple myeloma. Blood Rev 2021; 51:100872. [PMID: 34384602 DOI: 10.1016/j.blre.2021.100872] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 02/08/2023]
Abstract
Dysregulation of DNA methylation in B cells has been observed during their neoplastic transformation and therefore closely associated with various B-cell malignancies including multiple myeloma (MM), a malignancy of terminally differentiated plasma cells. Emerging evidence has unveiled pronounced alterations in DNA methylation in MM, including both global and gene-specific changes that can affect genome stability and gene transcription. Moreover, dysregulated expression of DNA methylation-modifying enzymes has been related with myelomagenesis, disease progression, and poor prognosis. However, the functional roles of the epigenetic abnormalities involving DNA methylation in MM remain elusive. In this article, we review current understanding of the alterations in DNA methylome and DNA methylation modifiers in MM, particularly focusing on DNA methyltransferases (DNMTs) and tet methylcytosine dioxygenases (TETs). We also discuss how these DNA methylation modifiers may be regulated and function in MM cells, therefore providing a rationale for developing novel epigenetic therapies targeting DNA methylation in MM.
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Affiliation(s)
- Ting Yang
- Laboratory of Cancer Precision Medicine, the First Hospital of Jilin University, 519 Dongminzhu Street, Changchun, Jilin 130061, China.
| | - Xiaobo Liu
- Laboratory of Cancer Precision Medicine, the First Hospital of Jilin University, 519 Dongminzhu Street, Changchun, Jilin 130061, China.
| | - Shaji K Kumar
- Division of Hematology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
| | - Fengyan Jin
- Department of Hematology, Cancer Center, the First Hospital of Jilin University, 71 Xinmin Street, Changchun, Jilin 130012, China.
| | - Yun Dai
- Laboratory of Cancer Precision Medicine, the First Hospital of Jilin University, 519 Dongminzhu Street, Changchun, Jilin 130061, China.
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Khouri J, Faiman BM, Grabowski D, Mahfouz RZ, Khan SN, Wei W, Valent J, Dean R, Samaras C, Jha BK, Lazarus H, Campagnaro EL, Malek E, Reed J, Karam MA, Hamilton K, Fada S, Kalaycio M, Liu H, Sobecks R, Saunthararajah Y, Chew Y, Orloff M, Reu FJ. DNA methylation inhibition in myeloma: Experience from a phase 1b study of low-dose continuous azacitidine in combination with lenalidomide and low-dose dexamethasone in relapsed or refractory multiple myeloma. Semin Hematol 2020; 58:45-55. [PMID: 33509443 DOI: 10.1053/j.seminhematol.2020.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 01/08/2023]
Abstract
The DNA methyltransferase inhibitor azacytidine (aza) may reactivate pathways associated with plasma cell differentiation, cell cycle control, apoptosis, and immune recognition and thereby restore sensitivity to lenalidomide (len) and dexamethasone (dex) in relapsed and/or refractory multiple myeloma (RRMM). We aimed to develop an aza regimen that reaches epigenetically active levels 8 times in 28 days with less bone marrow toxicity than the myeloid malignancy standard of 7 consecutive doses to enable safe combination with len. Aza was escalated from 30 mg/m2 once a week up to a predefined maximum of 50 mg/m2 twice a week in combination with GFR-adjusted len (≥ 60 mL/min: 25 mg, 3059 mL/min: 10 mg) day 1 to 21 every 28 days and dex 40 mg once a week followed by a limited expansion study to a total N of 23 at the highest tolerated dose. Fifty-one patients (pts) with RRMM were screened, 42 were treated and 41 were evaluable for response based on at least 1 response assessment or progression after treatment start. The median number of prior lines of therapy was 5 (1-11) and 81% (34) were refractory to len and/or pomalidomide (pom). Two DLTs occurred in different cohorts, 1 neutropenic fever in 1/6 pts on the aza 40 mg/m2 twice a week GFR ≥ 60 mL/min cohort and 1 GGT elevation in 1/6 pts on the aza 50 mg/m2 GFR 30-59 mL/min cohort. An MTD was not reached and aza 50 mg/m2 SC twice a week was chosen for the expansion study. At least possibly related Grade 3/4 AEs occurred in 28 pts (67%) with the following in > 1 pt: neutropenia (N = 16, 38%), anemia (N = 6, 14%), lymphopenia (N = 5, 12%), thrombocytopenia (N = 4, 10%), leukopenia (N = 4, 10%), febrile neutropenia (N = 4, 10%), fatigue (N = 3, 7%), fever (N = 2, 5%), and infection (N = 2, 5%). At a median follow up time for alive pts of 60.2 months (range: 36.1-82.5 months), the overall response rate (≥ partial response) and clinical benefit response rate (≥ minor response) was 22 and 32%, respectively, with 4 very good partial responses (10%), 5 partial responses (12%), and 4 minor responses (10%). The median PFS was 3.1 months (95% confidence interval [CI]: 2.1-5.1 months), median TTP 2.7 months (95% CI: 2.1-7.5 months), and median OS 18.6 months (95% CI: 12.9-33.0 months). Achieving at least minor response and reaching TTP > 6 months was associated with approximately 35% lower median plasma levels of the enzyme that inactivates aza, plasma cytidine deaminase (CDA, P< .0001). Two of the len refractory pts achieved longer disease control than with any prior regimen and 1 responded immediately after progression on len, bortezomib, and prednisone. Analyses of the methylation state of over 480,000 CpG sites in purified myeloma cells at screening were possible in 11 pts and on day 28 in 8 of them. As in other studies, the majority of differentially methylated CpGs compared to normal plasma cells were hypomethylated in myeloma. Treatment decreased the number of CpGs that were differentially methylated in normal plasma cells by > 0.5% in 6 and by > 5% in 3 of the 8 pts, most pronounced in 2 pts with clinically convincing aza contribution who achieved a reduction in overall differentially methylated CpGs by 23 and 68%, respectively, associated with increased expression of immunoglobulin genes. The study demonstrated tolerability of twice a week SC aza at 50 mg/m2 with len and dex in RRMM and suggested aza may help overcome the len/pom refractory state, possibly by activating differentiation pathways. Relatively low response rates and association of clinical benefit with low plasma levels of the aza inactivating enzyme CDA suggest the aza regimen will need to be optimized further and pt selection may be required to maximize benefit.
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Affiliation(s)
- Jack Khouri
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Beth M Faiman
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Dale Grabowski
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Reda Z Mahfouz
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Department of Clinical Pathology, Menoufia University, Shebin-Elkom, Egypt
| | - Shahper N Khan
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Interdisciplinary Nanotechnology Centre, Aligarh Muslim University, Aligarh, India
| | - Wei Wei
- Taussig Cancer Institute, Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - Jason Valent
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Robert Dean
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Christy Samaras
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Babal K Jha
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Hillard Lazarus
- Case Comprehensive Cancer Center, Cleveland, OH; Department of Hematology and Oncology, Seidman Cancer Center, University Hospitals, Cleveland, OH
| | - Erica L Campagnaro
- Case Comprehensive Cancer Center, Cleveland, OH; Department of Hematology and Oncology, Seidman Cancer Center, University Hospitals, Cleveland, OH; University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - Ehsan Malek
- Case Comprehensive Cancer Center, Cleveland, OH; Department of Hematology and Oncology, Seidman Cancer Center, University Hospitals, Cleveland, OH
| | - Janice Reed
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Mary Ann Karam
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Kimberly Hamilton
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Sherry Fada
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Matt Kalaycio
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Hien Liu
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Department of Blood and Marrow Transplant and Cellular Immunotherapy, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Ronald Sobecks
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH
| | - Yogen Saunthararajah
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH; Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | | | - Mohammed Orloff
- Lerner Research Institute, Genomic Core Facility, Cleveland Clinic, Cleveland, OH; Department of Epidemiology, University of Arkansas for Medical Sciences, Little Rock, AR; Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Frederic J Reu
- Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Case Comprehensive Cancer Center, Cleveland, OH; Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH; Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL; Morsani College of Medicine, University of South Florida, Tampa, FL.
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Che F, Chen J, Dai J, Liu X. Inhibition of Multiple Myeloma Using 5-Aza-2'-Deoxycytidine and Bortezomib-Loaded Self-Assembling Nanoparticles. Cancer Manag Res 2020; 12:6969-6976. [PMID: 32848460 PMCID: PMC7425094 DOI: 10.2147/cmar.s255682] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/30/2020] [Indexed: 02/01/2023] Open
Abstract
Purpose The aim of this study was to explore the use of self-assembling nanoparticles loaded with two chemotherapy drugs for the treatment of multiple myeloma. Materials and Methods Nanoparticle systems were developed based on amine polyethylene glycol-polycaprolactone (NH2-PEG-PCL) to encapsulate 5-Aza-2ʹ-deoxycytidine and Bortezomib using the self-assemble method. Morphological changes were observed by transmission electron microscopy (TEM), and the size, drug release, long-term stability, and release of reactive oxygen species (ROS) were analyzed. The MTT assay was used to evaluate the effects of drug-loaded nanoparticles (PEG-PCL-DAC-BTZ) in inhibiting the proliferation of multiple myeloma cells (U266 and LP-1), and the TUNEL assay and Western blotting were used to measure the induction of cell apoptosis. Results Based on the diameter of NH2-PEG-PCL and PEG-PCL-DAC-BTZ, the drug-loaded nanoparticles were successfully prepared. TEM revealed that PEG-PCL-DAC-BTZ was spherically shaped. More than 90% of the drugs were released after 72 h, and PEG-PCL-DAC-BTZ maintained a good stability. U266 and LP-1 cells treated with PEG-PCL-DAC-BTZ showed the highest growth inhibition, release of ROS, and cell apoptosis compared to those treated with unloaded nanoparticles and chemotherapy drugs alone. Conclusion The drug-loaded nanoparticles are a good foundation for the treatment of multiple myeloma as they showed a slow release profile, good stability, and superior anti-cancer effects in vitro.
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Affiliation(s)
- Feifei Che
- Organ Transplantation Center, Sichuan Academy of Medical Science and Sichuan People's Hospital, Chengdu, Sichuan Province, People's Republic of China
| | - Jiao Chen
- Organ Transplantation Center, Sichuan Academy of Medical Science and Sichuan People's Hospital, Chengdu, Sichuan Province, People's Republic of China
| | - Jingying Dai
- Organ Transplantation Center, Sichuan Academy of Medical Science and Sichuan People's Hospital, Chengdu, Sichuan Province, People's Republic of China
| | - Xingchao Liu
- Organ Transplantation Center, Sichuan Academy of Medical Science and Sichuan People's Hospital, Chengdu, Sichuan Province, People's Republic of China
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