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Murakami Y, Kimura-Masuda K, Oda T, Matsumura I, Masuda Y, Ishihara R, Watanabe S, Kuroda Y, Kasamatsu T, Gotoh N, Takei H, Kobayashi N, Saitoh T, Murakami H, Handa H. MYC Causes Multiple Myeloma Progression via Attenuating TP53-Induced MicroRNA-34 Expression. Genes (Basel) 2022; 14:100. [PMID: 36672841 PMCID: PMC9859619 DOI: 10.3390/genes14010100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/23/2022] [Accepted: 12/24/2022] [Indexed: 12/31/2022] Open
Abstract
MicroRNAs (miRNAs and miRs) are small (19-25 base pairs) non-coding RNAs with the ability to modulate gene expression. Previously, we showed that the miR-34 family is downregulated in multiple myeloma (MM) as the cancer progressed. In this study, we aimed to clarify the mechanism of miRNA dysregulation in MM. We focused particularly on the interaction between MYC and the TP53-miR34 axis because there is a discrepancy between increased TP53 and decreased miR-34 expressions in MM. Using the nutlin-3 or Tet-on systems, we caused wild-type (WT) p53 protein accumulation in human MM cell lines (HMCLs) and observed upregulated miR-34 expression. Next, we found that treatment with an Myc inhibitor alone did not affect miR-34 expression levels, but when it was coupled with p53 accumulation, miR-34 expression increased. In contrast, forced MYC activation by the MYC-ER system reduced nutlin-3-induced miR-34 expression. We also observed that TP53 and MYC were negatively correlated with mature miR-34 expressions in the plasma cells of patients with MM. Our results suggest that MYC participates in the suppression of p53-dependent miRNA expressions. Because miRNA expression suppresses tumors, its inhibition leads to MM development and malignant transformation.
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Affiliation(s)
- Yuki Murakami
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Kei Kimura-Masuda
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Tsukasa Oda
- Laboratory of Mucosal Ecosystem Design, The Institute for Molecular and Cellular Regulation, Gunma University, Maebashi 371-8510, Japan
| | - Ikuko Matsumura
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan
| | - Yuta Masuda
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
- Faculty of Medical Technology and Clinical Engineering, Gunma University of Health and Welfare, Maebashi 371-0823, Japan
| | - Rei Ishihara
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Saki Watanabe
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Yuko Kuroda
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Tetsuhiro Kasamatsu
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Nanami Gotoh
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Hisashi Takei
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan
| | - Nobuhiko Kobayashi
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan
| | - Takayuki Saitoh
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8510, Japan
| | - Hirokazu Murakami
- Faculty of Medical Technology and Clinical Engineering, Gunma University of Health and Welfare, Maebashi 371-0823, Japan
| | - Hiroshi Handa
- Department of Hematology, Gunma University Graduate School of Medicine, Maebashi 371-8510, Japan
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2
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Aktas Samur A, Fulciniti M, Avet-Loiseau H, Lopez MA, Derebail S, Corre J, Minvielle S, Magrangeas F, Moreau P, Anderson KC, Parmigiani G, Samur MK, Munshi NC. In-depth analysis of alternative splicing landscape in multiple myeloma and potential role of dysregulated splicing factors. Blood Cancer J 2022; 12:171. [PMID: 36535935 PMCID: PMC9763261 DOI: 10.1038/s41408-022-00759-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/09/2022] [Accepted: 11/22/2022] [Indexed: 12/24/2022] Open
Abstract
Splicing changes are common in cancer and are associated with dysregulated splicing factors. Here, we analyzed RNA-seq data from 323 newly diagnosed multiple myeloma (MM) patients and described the alternative splicing (AS) landscape. We observed a large number of splicing pattern changes in MM cells compared to normal plasma cells (NPC). The most common events were alterations of mutually exclusive exons and exon skipping. Most of these events were observed in the absence of overall changes in gene expression and often impacted the coding potential of the alternatively spliced genes. To understand the molecular mechanisms driving frequent aberrant AS, we investigated 115 splicing factors (SFs) and associated them with the AS events in MM. We observed that ~40% of SFs were dysregulated in MM cells compared to NPC and found a significant enrichment of SRSF1, SRSF9, and PCB1 binding motifs around AS events. Importantly, SRSF1 overexpression was linked with shorter survival in two independent MM datasets and was correlated with the number of AS events, impacting tumor cell proliferation. Together with the observation that MM cells are vulnerable to splicing inhibition, our results may lay the foundation for developing new therapeutic strategies for MM. We have developed a web portal that allows custom alternative splicing event queries by using gene symbols and visualizes AS events in MM and subgroups. Our portals can be accessed at http://rconnect.dfci.harvard.edu/mmsplicing/ and https://rconnect.dfci.harvard.edu/mmleafcutter/ .
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Affiliation(s)
- Anil Aktas Samur
- Department of Data Science, Dana Farber Cancer Institute, Boston, MA, 02215, USA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health Boston, Boston, MA, 02115, USA
| | - Mariateresa Fulciniti
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Herve Avet-Loiseau
- University Cancer Center of Toulouse Institut National de la Santé, Toulouse, France
| | - Michael A Lopez
- Memorial Sloan Kettering Cancer Center, New York, 10065, USA
| | - Sanika Derebail
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Jill Corre
- University Cancer Center of Toulouse Institut National de la Santé, Toulouse, France
| | - Stephane Minvielle
- Inserm UMR892, CNRS 6299, Université de Nantes; Centre Hospitalier Universitaire de Nantes, Unité Mixte de Genomique du Cancer, Nantes, France
| | - Florence Magrangeas
- Inserm UMR892, CNRS 6299, Université de Nantes; Centre Hospitalier Universitaire de Nantes, Unité Mixte de Genomique du Cancer, Nantes, France
| | - Philippe Moreau
- Inserm UMR892, CNRS 6299, Université de Nantes; Centre Hospitalier Universitaire de Nantes, Unité Mixte de Genomique du Cancer, Nantes, France
| | - Kenneth C Anderson
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Giovanni Parmigiani
- Department of Data Science, Dana Farber Cancer Institute, Boston, MA, 02215, USA.
- Department of Biostatistics, Harvard T.H. Chan School of Public Health Boston, Boston, MA, 02115, USA.
| | - Mehmet K Samur
- Department of Data Science, Dana Farber Cancer Institute, Boston, MA, 02215, USA.
- Department of Biostatistics, Harvard T.H. Chan School of Public Health Boston, Boston, MA, 02115, USA.
| | - Nikhil C Munshi
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA.
- VA Boston Healthcare System, Boston, MA, 02115, USA.
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3
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Serum proteomic profiling reveals MTA2 and AGO2 as potential prognostic biomarkers associated with disease activity and adverse outcomes in multiple myeloma. PLoS One 2022; 17:e0278464. [PMID: 36454786 PMCID: PMC9714744 DOI: 10.1371/journal.pone.0278464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 10/19/2022] [Indexed: 12/03/2022] Open
Abstract
Multiple myeloma (MM) is an incurable plasma cell malignancy accounting for approximately 10% of hematological malignancies. Identification of reliable biomarkers for better diagnosis and prognosis remains a major challenge. This study aimed to identify potential serum prognostic biomarkers corresponding to MM disease activity and evaluate their impact on patient outcomes. Serum proteomic profiles of patients with MM and age-matched controls were performed using LC-MS/MS. In the verification and validation phases, the concentration of the candidate biomarkers was measured using an ELISA technique. In addition, the association of the proposed biomarkers with clinical outcomes was assessed. We identified 23 upregulated and 15 downregulated proteins differentially expressed in newly diagnosed and relapsed/refractory MM patients compared with MM patients who achieved at least a very good partial response to treatment (≥VGPR). The top two candidate proteins, metastasis-associated protein-2 (MTA2) and argonaute-2 (AGO2), were selected for further verification and validation studies. Both MTA2 and AGO2 showed significantly higher levels in the disease-active states than in the remission states (p < 0.001). Regardless of the patient treatment profile, high MTA2 levels were associated with shorter progression-free survival (p = 0.044; HR = 2.48; 95% CI, 1.02 to 6.02). Conversely, high AGO2 levels were associated with IgG and kappa light-chains isotypes and an occurrence of bone involvement features (p < 0.05) and were associated with prolonged time to response (p = 0.045; HR = 3.00; 95% CI, 1.03 to 8.76). Moreover, the analytic results using a publicly available NCBI GEO dataset revealed that AGO2 overexpression was associated with shorter overall survival among patients with MM (p = 0.032, HR = 1.60, 95% CI, 1.04 to 2.46). In conclusion, MTA2 and AGO2 proteins were first identified as potential biomarkers that reflect disease activity, provide prognostic values and could serve as non-invasive indicators for disease monitoring and outcome predicting among patients with MM.
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Han Q, Bai H, Xu Y, Zhou M, Zhou H, Dong X, Chen B. Solamargine induces autophagy-mediated apoptosis and enhances bortezomib activity in multiple myeloma. Clin Exp Pharmacol Physiol 2022; 49:674-685. [PMID: 35294057 PMCID: PMC9310729 DOI: 10.1111/1440-1681.13643] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/04/2022] [Accepted: 03/09/2022] [Indexed: 11/29/2022]
Abstract
Multiple myeloma (MM) is an incurable plasma cell malignancy with a poor survival rate. Conventional chemotherapeutic agent‐induced adverse events, including toxicity, neuropathy or drug resistance, significantly decrease the patients' quality of life and can even lead to interruption of treatment. Therefore, novel therapeutic drugs and strategies are urgently needed to improve MM therapy and patient outcomes. Here, we show that solamargine (SM), a steroidal alkaloid glycoside isolated from a Chinese herb Solanum nigrum L., exhibits promising anti‐MM activity. In particular, SM suppressed the viability of MM cell lines (ARP‐1 and NCI‐H929) in a concentration‐ and time‐dependent manner, inducing apoptosis in these cells. RNA‐seq analysis showed that treatment with SM led to the upregulation of genes associated with cell death and autophagy in H929 cells. Further, we found that treatment with SM activated autophagy in the MM cells, as incubation with 3‐Methyladenine, an inhibitor of autophagy, significantly alleviated SM‐triggered apoptosis and inhibition of viability in MM cells. Interestingly, we also observed a synergistic effect between SM and bortezomib (BTZ), a common chemotherapeutic agent for MM, in both MM cells and human bone marrow CD138+ primary myeloma cells. We also confirmed the single‐agent efficacy of SM and the synergistic effects between SM and BTZ in an MM xenograft mouse model. Collectively, these findings indicate that SM exerts an anti‐MM effect, at least in part, by activating cell autophagy and reveal that SM alone or in combination with BTZ is a potential therapeutic strategy for treating MM.
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Affiliation(s)
- Qiaoyan Han
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.,Department of Hematology, Jingjiang People's Hospital, Jingjiang, Jiangsu, China
| | - Hua Bai
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yong Xu
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Min Zhou
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - He Zhou
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Xiaoqing Dong
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Bing Chen
- Department of Hematology, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
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5
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Ma H, Shen L, Yang H, Gong H, Du X. Circular RNA circPSAP functions as an efficient miR-331-3p sponge to regulate proliferation, apoptosis and bortezomib sensitivity of human multiple myeloma cells by upregulating HDAC4. J Pharmacol Sci 2022; 149:27-36. [DOI: 10.1016/j.jphs.2022.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/18/2022] [Accepted: 01/31/2022] [Indexed: 12/24/2022] Open
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6
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Adamia S, Bhatt S, Wen K, Chyra Z, Fell GG, Tai YT, Pioso MS, Abiatari I, Letai A, Dorfman DM, Hideshima T, Anderson KC. Combination therapy targeting Erk1/2 and CDK4/6i in relapsed refractory multiple myeloma. Leukemia 2022; 36:1088-1101. [PMID: 35082402 PMCID: PMC8979823 DOI: 10.1038/s41375-021-01475-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 11/04/2021] [Accepted: 11/10/2021] [Indexed: 11/09/2022]
Abstract
Oncogenic activated RAS mutations have been detected in 50% of de novo and 70% of relapsed multiple myeloma (MM) patients. Translocation t(11;14) involving IgH/CCDN1 and overexpression of cyclin-Ds are early events in MM pathogenesis, enhancing uncontrolled MM cell growth. We hypothesized that targeting both RAS/MAPK pathway molecules including Erk1/2 along with cyclin-Ds enhances MM cytotoxicity and minimizes side effects. Recent studies have demonstrated the high potency of Erk1/2 and CDK4/6 inhibitors in metastatic relapsed cancers, and here we tested anti-MM effects of the Erk1/2 + CDK4/6 inhibitor combination. Our studies showed strong synergistic (IC < 0.5) cytotoxicity of Erk1/2i + CDK4/6i in MM-cells. Erk1/2i + CDK4/6i treatment in a dose-dependent manner arrested MM-cells in the G0/G1 phase and activated mitochondrial apoptotic signaling. Our studies showed that Erk1/2i + CDK4/6i treatment-induced inhibition of key target molecules in Erk1/2 and CDK4/6 signaling, such as c-myc, p-RSK, p-S6, p-RB, and E2F1, suggesting on-target activity of these inhibitors. We identified Erk1/2i + CDK4/6i treatment associated five-gene signature which includes SNRPB and SLC25A5; these genes are involved in RNA processing and mitochondrial metabolism, respectively. Overall, our studies provide the preclinical framework for Erk1/2i + CDK4/6i combination clinical trials to target Ras+CDK pathways to improve patient outcome in MM.
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Affiliation(s)
- Sophia Adamia
- Jerome Lipper Multiple Myeloma Disease Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA.
| | - Shruti Bhatt
- Dana-FArber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA.,Department of Pharmacy, National University of Singapore, Singapore, 117559, Singapore
| | - Kenneth Wen
- Jerome Lipper Multiple Myeloma Disease Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - Zuzana Chyra
- Jerome Lipper Multiple Myeloma Disease Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - Geoffrey G Fell
- Dana-Farber Cancer Institute, Department of Data science, Boston, MA, 02215, USA
| | - Yu-Tzu Tai
- Jerome Lipper Multiple Myeloma Disease Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - Marisa S Pioso
- Dana-FArber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - Ivane Abiatari
- Ilia State University, School of Medicine, Tbilisi, G409, Georgia
| | - Anthony Letai
- Dana-FArber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - David M Dorfman
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02215, USA
| | - Teru Hideshima
- Jerome Lipper Multiple Myeloma Disease Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA
| | - Kenneth C Anderson
- Jerome Lipper Multiple Myeloma Disease Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA.
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Guo W, Wang H, Chen P, Shen X, Zhang B, Liu J, Peng H, Xiao X. Identification and Characterization of Multiple Myeloma Stem Cell-Like Cells. Cancers (Basel) 2021; 13:cancers13143523. [PMID: 34298738 PMCID: PMC8306148 DOI: 10.3390/cancers13143523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/30/2021] [Accepted: 07/04/2021] [Indexed: 12/14/2022] Open
Abstract
Multiple myeloma (MM) is a B-cell tumor of the blood system with high incidence and poor prognosis. With a further understanding of the pathogenesis of MM and the bone marrow microenvironment, a variety of adjuvant cell therapies and new drugs have been developed. However, the drug resistance and high relapse rate of MM have not been fundamentally resolved. Studies have shown that, in patients with MM, there is a type of poorly differentiated progenitor cell (MM stem cell-like cells, MMSCs). Although there is no recognized standard for identification and classification, it is confirmed that they are closely related to the drug resistance and relapse of MM. This article therefore systematically summarizes the latest developments in MMSCs with possible markers of MMSCs, introduces the mechanism of how MMSCs work in MM resistance and recurrence, and discusses the active pathways that related to stemness of MM.
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Affiliation(s)
- Wancheng Guo
- Department of Hematology, the Second Xiangya Hospital, Molecular Biology Research Center, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha 410011, China; (W.G.); (H.W.); (J.L.)
- Xiangya Medical School, Central South University, Changsha 410013, China; (P.C.); (X.S.); (B.Z.)
| | - Haiqin Wang
- Department of Hematology, the Second Xiangya Hospital, Molecular Biology Research Center, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha 410011, China; (W.G.); (H.W.); (J.L.)
| | - Peng Chen
- Xiangya Medical School, Central South University, Changsha 410013, China; (P.C.); (X.S.); (B.Z.)
| | - Xiaokai Shen
- Xiangya Medical School, Central South University, Changsha 410013, China; (P.C.); (X.S.); (B.Z.)
| | - Boxin Zhang
- Xiangya Medical School, Central South University, Changsha 410013, China; (P.C.); (X.S.); (B.Z.)
| | - Jing Liu
- Department of Hematology, the Second Xiangya Hospital, Molecular Biology Research Center, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha 410011, China; (W.G.); (H.W.); (J.L.)
| | - Hongling Peng
- Department of Hematology, the Second Xiangya Hospital, Molecular Biology Research Center, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha 410011, China; (W.G.); (H.W.); (J.L.)
- Correspondence: (H.P.); (X.X.); Tel.: +86-731-85295296 (H.P.); +86-731-84805449 (X.X.)
| | - Xiaojuan Xiao
- Department of Hematology, the Second Xiangya Hospital, Molecular Biology Research Center, School of Life Sciences, Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University, Changsha 410011, China; (W.G.); (H.W.); (J.L.)
- Correspondence: (H.P.); (X.X.); Tel.: +86-731-85295296 (H.P.); +86-731-84805449 (X.X.)
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8
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Zi Y, Zhang Y, Wu Y, Zhang L, Yang R, Huang Y. Downregulation of microRNA‑25‑3p inhibits the proliferation and promotes the apoptosis of multiple myeloma cells via targeting the PTEN/PI3K/AKT signaling pathway. Int J Mol Med 2021; 47:8. [PMID: 33448321 PMCID: PMC7834966 DOI: 10.3892/ijmm.2020.4841] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 12/04/2020] [Indexed: 12/30/2022] Open
Abstract
Numerous studies have confirmed that microRNAs (miRNAs or miRs) have important roles in cancer biogenesis and development including multiple myeloma (MM). MicroRNA-25-3p (miR-25-3p) has been proven to promote cancer progression, whereas its functions in MM has not yet been reported, at least to the best of our knowledge. Therefore, the present study aimed to investigate the function of miR-25-3p in MM and to identify the potential underlying mechanistic pathway. Herein, it was found that miR-25-3p expression was significantly increased in MM tissues and cell lines. The upregulation of miR-25-3p was closely associated with anemia, renal function impairment international staging system (ISS) staging and Durie-Salmon (D-S) staging. A high level of miR-25-3p was predictive of a poor prognosis of patients with MM. In vitro, the knockdown of miR-25-3p suppressed the proliferation and promoted the apoptosis of RPMI-8226 and U266 cells, while the overexpression of miR-25-3p exerted opposite effects. In addition, phosphatase and tensin homolog deleted on chromosome 10 (PTEN), a well-known tumor suppressor, was confirmed as a target of miR-25-3p in MM cells. Moreover, it was found that the PTEN expression levels were decreased, and inversely correlated with miR-25-3p expression levels in MM tissues. Further analyses revealed that the overexpression of PTEN exerted effects similar to those of miR-25-3p knockdown, whereas the knockdown of PTEN partially abolished the effects of miR-25-3p inhibitor on MM cells. Accompanied by PTEN induction, miR-25-3p promoted PI3K/AKT signaling pathway activation in MM cells. Collectively, these findings demonstrate critical roles for miR-25-3p in the pathogenesis of MM, and suggest that miR-25-3p may serve as a novel prognostic biomarker and therapeutic target of MM.
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Affiliation(s)
- Youmei Zi
- Department of Hematology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Yingzi Zhang
- Department of Blood Transfusion, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Yanwei Wu
- Clinical Laboratory, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Lina Zhang
- Central Laboratory, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Ru Yang
- Henan Key Laboratory of Neurorestoratology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Yan Huang
- Department of Hematology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
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9
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Che F, Chen J, Wan C, Huang X. MicroRNA-27 Inhibits Autophagy and Promotes Proliferation of Multiple Myeloma Cells by Targeting the NEDD4/Notch1 Axis. Front Oncol 2020; 10:571914. [PMID: 33262943 PMCID: PMC7686543 DOI: 10.3389/fonc.2020.571914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/18/2020] [Indexed: 12/30/2022] Open
Abstract
Multiple myeloma (MM) is a malignant tumor disease that seriously affects the health of patients. Previous studies have shown the crucial role of autophagy in the development of MM. Therefore, the study aimed to study the effect of miR-27 on autophagy in MM via NEDD4/Notch1 axis. RT-qPCR or western blot analysis was used to detect the expression of miR-27, NEDD4, and Notch1 in bone marrow tissues and CD138+ plasma cells of patients and MM cells. After gain- and loss-of-function assays in MM cells, proliferation and invasion were assessed by clone formation and Transwell assays. Meanwhile, expression of autophagy-related proteins was measured by western blot analysis, followed by evaluation of autophagosomes and autophagic flow. The targeting relationship was evaluated by luciferase reporter assay, whereas the binding of NEDD4 to Notch1 protein was analyzed by co-immunoprecipitation. The ubiquitination level of Notch1 protein was detected. A nude mouse tumor model was established to determine the role of miR-27 in MM in vivo. miR-27 and Notch1 upregulation and NEDD4 downregulation were observed in bone marrow tissues and CD138+ plasma cells of patients and MM cells. miR-27 negatively targeted NEDD4, while NEDD4 could specifically bind to Notch1 protein to increase Notch1 ubiquitin degradation in MM cells. miR-27 or Notch1 overexpression or NEDD4 silencing diminished autophagy but enhanced proliferation and invasion of MM cells. miR-27 upregulation promoted the formation of subcutaneous tumor in nude mice. Collectively, miR-27 elevated Notch1 expression by targeting NEDD4 and promoted the development of MM by inhibiting cell autophagy, which provides a new idea and basis for MM treatment.
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Affiliation(s)
- Feifei Che
- Department of Hematology, Sichuan Academy of Medical Science & Sichuan People's Hospital, Chengdu, China
| | - Jiao Chen
- Department of Hematology, Sichuan Academy of Medical Science & Sichuan People's Hospital, Chengdu, China
| | - Chunqian Wan
- Department of Hematology, Sichuan Academy of Medical Science & Sichuan People's Hospital, Chengdu, China
| | - Xiaobing Huang
- Department of Hematology, Sichuan Academy of Medical Science & Sichuan People's Hospital, Chengdu, China
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10
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Wang M, Zhao HY, Zhang JL, Wan DM, Li YM, Jiang ZX. Dysregulation of LncRNA ANRIL mediated by miR-411-3p inhibits the malignant proliferation and tumor stem cell like property of multiple myeloma via hypoxia-inducible factor 1α. Exp Cell Res 2020; 396:112280. [PMID: 32961145 DOI: 10.1016/j.yexcr.2020.112280] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 11/25/2022]
Abstract
Long non-coding RNA (lncRNA) ANRIL has been reported to be closely related to the relapse of multiple myeloma patients. However, the functional role and underlying mechanism of lncRNA ANRIL in multiple myeloma are not known. This study aims to investigate the biological function of lncRNA ANRIL in multiple myeloma. In this study, compared with normal tissues from healthy donors, lncRNA ANRIL and HIF-1α expressions were up-regulated in tumor tissues from multiple myeloma patients. miR-411-3p expression was down-regulated in tumor tissues from multiple myeloma patients. Besides, lncRNA ANRIL can interact with miR-411-3p. HIF-1α was confirmed to be a target of miR-411-3p. Correlation analysis showed that lncRNA ANRIL expression was negatively correlated with miR-411-3p expression. HIF-1α expression was negatively correlated with miR-411-3p expression. Further transfection experiments showed that knockdown of ANRIL or overexpression of miR-411-3p significantly inhibited cell proliferation, tumor formation ability and tumor stem cell like property, promoted cell apoptosis in vitro. Finally, miR-411-3p mimic reduced tumor volume, improved survival rate, suppressed malignant proliferation and tumor stem cell like property in U266 xenograft model. Our results demonstrate that lncRNA ANRIL mediated by miR-411-3p promotes the malignant proliferation and tumor stem cell like property of multiple myeloma through regulating HIF-1α.
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Affiliation(s)
- Meng Wang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 452000, China
| | - Hua-Yan Zhao
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 452000, China
| | - Jing-Lan Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 452000, China
| | - Ding-Ming Wan
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 452000, China
| | - Ying-Mei Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 452000, China
| | - Zhong-Xing Jiang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 452000, China.
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