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Van Morckhoven D, Dubois N, Bron D, Meuleman N, Lagneaux L, Stamatopoulos B. Extracellular vesicles in hematological malignancies: EV-dence for reshaping the tumoral microenvironment. Front Immunol 2023; 14:1265969. [PMID: 37822925 PMCID: PMC10562589 DOI: 10.3389/fimmu.2023.1265969] [Citation(s) in RCA: 3] [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: 07/24/2023] [Accepted: 09/04/2023] [Indexed: 10/13/2023] Open
Abstract
Following their discovery at the end of the 20th century, extracellular vesicles (EVs) ranging from 50-1,000 nm have proven to be paramount in the progression of many cancers, including hematological malignancies. EVs are a heterogeneous group of cell-derived membranous structures that include small EVs (commonly called exosomes) and large EVs (microparticles). They have been demonstrated to participate in multiple physiological and pathological processes by allowing exchange of biological material (including among others proteins, DNA and RNA) between cells. They are therefore a crucial way of intercellular communication. In this context, malignant cells can release these extracellular vesicles that can influence their microenvironment, induce the formation of a tumorigenic niche, and prepare and establish distant niches facilitating metastasis by significantly impacting the phenotypes of surrounding cells and turning them toward supportive roles. In addition, EVs are also able to manipulate the immune response and to establish an immunosuppressive microenvironment. This in turn allows for ideal conditions for heightened chemoresistance and increased disease burden. Here, we review the latest findings and reports studying the effects and therapeutic potential of extracellular vesicles in various hematological malignancies. The study of extracellular vesicles remains in its infancy; however, rapid advances in the analysis of these vesicles in the context of disease allow us to envision prospects to improve the detection and treatment of hematological malignancies.
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Affiliation(s)
- David Van Morckhoven
- Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Nathan Dubois
- Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Dominique Bron
- Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
- Departement of Hematology, Jules Bordet Institute, Brussels, Belgium
| | - Nathalie Meuleman
- Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
- Departement of Hematology, Jules Bordet Institute, Brussels, Belgium
| | - Laurence Lagneaux
- Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Basile Stamatopoulos
- Laboratory of Clinical Cell Therapy, Jules Bordet Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
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2
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Menu E, Vanderkerken K. Exosomes in multiple myeloma: from bench to bedside. Blood 2022; 140:2429-2442. [PMID: 35271699 PMCID: PMC10653045 DOI: 10.1182/blood.2021014749] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/10/2022] [Accepted: 02/23/2022] [Indexed: 12/16/2022] Open
Abstract
Multiple myeloma (MM) remains an incurable plasma cell malignancy that develops in the bone marrow (BM). This BM is partially responsible for protecting the MM cells against current standard-of-care therapies and for accommodating MM-related symptoms such as bone resorption and immune suppression. Increasing evidence has implicated extracellular vesicles (EV), including exosomes in the different processes within the BM. Exosomes are <150-nm-sized vesicles secreted by different cell types including MM cells. These vesicles contain protein and RNA cargo that they deliver to the recipient cell. In this way, they have been implicated in MM-related processes including osteolysis, angiogenesis, immune suppression, and drug resistance. Targeting exosome secretion could therefore potentially block these different processes. In this review, we will summarize the current findings of exosome-related processes in the BM and describe not only the current treatment strategies to counter them but also how exosomes can be harnessed to deliver toxic payloads. Finally, an overview of the different clinical studies that investigate EV cargo as potential MM biomarkers in liquid biopsies will be discussed.
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Affiliation(s)
- Eline Menu
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Karin Vanderkerken
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
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3
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Ren H, Chen S, Liu C, Wu H, Wang Z, Zhang X, Ren J, Zhou L. Circular RNA in multiple myeloma: A new target for therapeutic intervention. Pathol Res Pract 2022; 238:154129. [PMID: 36137401 DOI: 10.1016/j.prp.2022.154129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/27/2022] [Accepted: 09/13/2022] [Indexed: 10/14/2022]
Abstract
Circular RNAs (circRNAs) are RNA molecules with a stable closed-loop structure that are found in a variety of organisms. CircRNAs are highly stable and conserved, and they play important roles in transcriptional regulation and splicing. Multiple Myeloma (MM) is a malignant proliferative disease for which there are currently no effective and comprehensive treatments. Numerous circRNAs may contribute to the development and progression of MM by acting as oncogenes or regulators. Due to the unique function of circRNAs, they have a high potential for regulating the biological functions (including proliferation and apoptosis) of MM cells, and their expression levels and molecular mechanism are closely related to their diagnostic value, therapeutic sensitivity, and clinical prognosis of MM patients. In this review, we aim to provide a detailed overview of the structure and function of circRNAs and demonstrate the potential therapeutic value and potential mechanism of circRNAs in MM via experiments and clinical trials.
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Affiliation(s)
- Hefei Ren
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Sai Chen
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Chang Liu
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Hongkun Wu
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Zhenhua Wang
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Xiaomin Zhang
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Jigang Ren
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China
| | - Lin Zhou
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai 200003, China.
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4
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Zhu C, Guo A, Sun B, Zhou Z. Comprehensive elaboration of circular RNA in multiple myeloma. Front Pharmacol 2022; 13:971070. [PMID: 36133810 PMCID: PMC9483726 DOI: 10.3389/fphar.2022.971070] [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: 06/16/2022] [Accepted: 08/03/2022] [Indexed: 01/17/2023] Open
Abstract
Circular RNAs (circRNAs), a novel category of endogenous non-coding RNAs, are usually well conserved across different species with a covalent closed-loop structure. Existing and emerging evidence confirms that circRNAs can function as regulators of alternative splicing, microRNA and RNA-binding protein sponges and translation, as well as gene transcription. In consideration of their multi-faceted functions, circRNAs are critically involved in hematological malignancies including multiple myeloma (MM). In particular, circRNAs have been found to play vital roles in tumor microenvironment and drug resistance, which may grant them potential roles as biomarkers for MM diagnosis and targeted therapy. In this review, we comprehensively elaborate the current state-of-the-art knowledge of circRNAs in MM, and then focus on their potential as biomarkers in diagnosis and therapy of MM.
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Affiliation(s)
- Chunsheng Zhu
- Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Aoxiang Guo
- Department of Pharmacy, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Bao Sun
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
- National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Zheng Zhou, ; Bao Sun,
| | - Zheng Zhou
- Department of Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Zheng Zhou, ; Bao Sun,
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5
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Zhou X, Du J. CircRNAs: novel therapeutic targets in multiple myeloma. Mol Biol Rep 2022; 49:10667-10676. [PMID: 35729478 DOI: 10.1007/s11033-022-07668-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/31/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Circular RNA (circRNA) is a type of non-coding RNA that has recently attracted the attention of researchers. Multiple myeloma (MM) is a hematological malignancy with a dismal prognosis that indicates a pressing need for better treatment alternatives, particularly in terms of biological indicators. According to recent research findings, the presence of circRNA is also closely related to the incidence and progression of malignant hemopathy. There have been, however, only a few investigations of circRNA in MM. MATERIAL AND METHODS This review will be on the biological properties and functions of circRNA in MM and a discussion of the clinical utility of circRNA in the diagnosis, prognosis, and treatment of MM. CONCLUSIONS CircRNA is involved in gene transcription, translation, and epigenetic modification as well as the regulation of cancer cell proliferation, invasion, and metastasis, and hence, promotes or inhibits the occurrence and progression of MM. Therefore, circRNA holds promise as a potential future MM biomarker.
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Affiliation(s)
- Xinyi Zhou
- Department of Hematology, Myeloma and Lymphoma Center, Shanghai Changzheng Hospital, Naval Medical University, No. 415 Fengyang Road, Huangpu Area, Shanghai, 200003, China
| | - Juan Du
- Department of Hematology, Myeloma and Lymphoma Center, Shanghai Changzheng Hospital, Naval Medical University, No. 415 Fengyang Road, Huangpu Area, Shanghai, 200003, China.
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6
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Du J, Jia F, Wang L. Advances in the Study of circRNAs in Hematological Malignancies. Front Oncol 2022; 12:900374. [PMID: 35795049 PMCID: PMC9250989 DOI: 10.3389/fonc.2022.900374] [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: 03/20/2022] [Accepted: 05/23/2022] [Indexed: 11/26/2022] Open
Abstract
Circular RNAs (circRNAs) are non–protein-coding RNAs that have a circular structure and do not possess a 5` cap or 3` poly-A tail. Their structure is more stable than that of linear RNAs, and they are difficult to deform via hydrolysis. Advancements in measurement technology such as RNA sequencing have enabled the detection of circRNAs in various eukaryotes in both in vitro and in vivo studies. The main function of circRNAs involves sponging of microRNAs (MiRNAs) and interaction with proteins associated with physiological and pathological processes, while some circRNAs are involved in translation. circRNAs act as tumor suppressors or oncogenes during the development of many tumors and are emerging as new diagnostic and prognostic biomarkers. They also affect resistance to certain chemotherapy drugs such as imatinib. The objective of this review is to investigate the expression and clinical significance of circRNAs in hematological malignancies. We will also explore the effect of circRNAs on proliferation and apoptosis in hematological malignancy cells and their possible use as biomarkers or targets to determine prognoses. The current literature indicates that circRNAs may provide new therapeutic strategies for patients with hematologic malignancies.
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Affiliation(s)
- Jingyi Du
- School of Clinical Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
- Central Laboratory, Linyi People’s Hospital, Linyi, China
| | - Feiyu Jia
- Department of Education and Teaching, Linyi People’s Hospital, Linyi, China
- *Correspondence: Lijuan Wang, ; Feiyu Jia,
| | - Lijuan Wang
- Central Laboratory, Linyi People’s Hospital, Linyi, China
- Linyi Key Laboratory of Tumor Biology, Linyi, China
- *Correspondence: Lijuan Wang, ; Feiyu Jia,
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7
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The emerging landscape of exosomal CircRNAs in solid cancers and hematological malignancies. Biomark Res 2022; 10:28. [PMID: 35505392 PMCID: PMC9066734 DOI: 10.1186/s40364-022-00375-3] [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: 12/07/2021] [Accepted: 04/05/2022] [Indexed: 12/24/2022] Open
Abstract
Circular RNAs (circRNAs) are a type of recently discovered noncoding RNA. They exert their biological functions by competitively binding to microRNAs (miRNAs) as miRNA sponges, promoting gene transcription and participating in the regulation of selective splicing, interacting with proteins and being translated into proteins. Exosomes are derived from intracavitary vesicles (ILVs), which are formed by the inward budding of multivesicular bodies (MVBs), and exosome release plays a pivotal role in intercellular communication. Accumulating evidence indicates that circRNAs in exosomes are associated with solid tumor invasion and metastasis. Additionally, emerging studies in the last 1 ~ 2 years have revealed that exosomal circRNA also have effect on hematological malignancies. In this review, we outline the properties and biological functions of circRNAs and exosomes. In particular, we summarize in detail the mechanism and roles of exosomal circRNAs and highlight their application as novel biomarkers in malignant tumors.
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8
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Bazzoni R, Tanasi I, Turazzi N, Krampera M. Update on the role and utility of extracellular vesicles in hematological malignancies. Stem Cells 2022; 40:619-629. [PMID: 35442447 DOI: 10.1093/stmcls/sxac032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 04/12/2022] [Indexed: 11/12/2022]
Abstract
Extracellular vesicles (EVs) are membrane-surrounded cellular particles released by virtually any cell type, containing numerous bioactive molecules, including lipids, proteins, and nucleic acids. EVs act as a very efficient intercellular communication system by releasing their content into target cells, thus affecting their fate and influencing several biological processes. EVs are released both in physiological and pathological conditions, including several types of cancers. In hematological malignancies (HM), EVs have emerged as new critical players, contributing to tumor-to-stroma, stroma-to-tumor, and tumor-to-tumor cell communication. Therefore, EVs have been shown to play a crucial role in the pathogenesis and clinical course of several HM, contributing to tumor development, progression, and drug resistance. Furthermore, tumor EVs can reprogram the bone marrow (BM) microenvironment and turn it into a sanctuary, in which cancer cells suppress both the normal hematopoiesis and the immunological anti-tumor activity, conferring a therapy-resistant phenotype. Due to their physicochemical characteristics and pro-tumor properties, EVs have been suggested as new diagnostic biomarkers, therapeutic targets, and pharmacological nanocarriers. This review aims to provide an update on the pathogenetic contribution and the putative therapeutic utility of EVs in hematological diseases.
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Affiliation(s)
- Riccardo Bazzoni
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, P. le Scuro 10, 37134 Verona, Italy
| | - Ilaria Tanasi
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, P. le Scuro 10, 37134 Verona, Italy
| | - Nice Turazzi
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, P. le Scuro 10, 37134 Verona, Italy
| | - Mauro Krampera
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, P. le Scuro 10, 37134 Verona, Italy
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9
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Allegra A, Cicero N, Tonacci A, Musolino C, Gangemi S. Circular RNA as a Novel Biomarker for Diagnosis and Prognosis and Potential Therapeutic Targets in Multiple Myeloma. Cancers (Basel) 2022; 14:cancers14071700. [PMID: 35406472 PMCID: PMC8997050 DOI: 10.3390/cancers14071700] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 01/27/2023] Open
Abstract
Circular RNAs (circRNAs) are a novel type of covalently closed RNAs involved in several physiological and pathological processes. They display tissue-specific expression and are constant, abundant, and highly conserved, making them perfect markers for diagnosis and prognosis. Several studies have proposed that circRNAs are also differentially produced in malignancies where they have oncogenic effects. Furthermore, circRNAs affecting microRNAs modify the expression profile of several transcription factors which play essential roles in tumors. CircRNAs within the hematopoietic compartment were identified as modulators of mechanisms able to enhance or suppress tumor progression in blood malignancies. Moreover, several circRNAs were suggested to confer resistance to the conventional drugs employed in hematopoietic cancers. In this review, we highlight the growing role and the controlling mechanisms by which circRNAs modify multiple myeloma genesis. We propose that circRNAs can be considered as potential diagnostic and prognostic markers, can induce chemoresistance, and might represent novel therapeutic targets for multiple myeloma.
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Affiliation(s)
- Alessandro Allegra
- Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, Division of Hematology, University of Messina, 98125 Messina, Italy;
- Correspondence:
| | - Nicola Cicero
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, 98125 Messina, Italy;
| | - Alessandro Tonacci
- Clinical Physiology Institute, National Research Council of Italy (IFC-CNR), 56124 Pisa, Italy;
| | - Caterina Musolino
- Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, Division of Hematology, University of Messina, 98125 Messina, Italy;
| | - Sebastiano Gangemi
- Allergy and Clinical Immunology Unit, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy;
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10
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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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11
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Allegra A, Di Gioacchino M, Tonacci A, Petrarca C, Musolino C, Gangemi S. Multiple Myeloma Cell-Derived Exosomes: Implications on Tumorigenesis, Diagnosis, Prognosis and Therapeutic Strategies. Cells 2021; 10:2865. [PMID: 34831088 PMCID: PMC8616233 DOI: 10.3390/cells10112865] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/16/2022] Open
Abstract
Multiple myeloma (MM) is a hematological disease that is still not curable. The bone marrow milieu, with cellular and non-cellular elements, participate in the creation of a pro-tumoral environment enhancing growth and survival of MM plasma cells. Exosomes are vesicles oscillating in dimension between 50 nm and 100 nm in size that can be released by various cells and contribute to the pathogenesis and progression of MM. Exosomes enclose proteins, cytokines, lipids, microRNAs, long noncoding RNAs, and circular RNAs able to regulate interactions between MM plasma cells and adjacent cells. Through exosomes, mesenchymal stem cells confer chemoresistance to MM cells, while myeloma cells promote angiogenesis, influence immune response, cause bone lesions, and have an impact on the outcome of MM patients. In this review, we analyze the role played by exosomes in the progression of monoclonal gammopathies and the effects on the proliferation of neoplastic plasma cells, and discuss the possible employment of exosomes as potential targets for the treatment of MM patients.
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Affiliation(s)
- Alessandro Allegra
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy;
| | - Mario Di Gioacchino
- Center for Advanced Studies and Technology, G. D’Annunzio University, 66100 Chieti, Italy;
- Institute for Clinical Immunotherapy and Advanced Biological Treatments, 65100 Pescara, Italy
| | - Alessandro Tonacci
- National Research Council of Italy (IFC-CNR), Clinical Physiology Institute, 56124 Pisa, Italy;
| | - Claudia Petrarca
- Center for Advanced Studies and Technology, G. D’Annunzio University, 66100 Chieti, Italy;
- Institute for Clinical Immunotherapy and Advanced Biological Treatments, 65100 Pescara, Italy
- National Research Council of Italy (IFC-CNR), Clinical Physiology Institute, 56124 Pisa, Italy;
- Department of Medicine and Science of Ageing, G. D’Annunzio University, 66100 Chieti, Italy
| | - Caterina Musolino
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy;
| | - Sebastiano Gangemi
- Department of Clinical and Experimental Medicine, Unit and School of Allergy and Clinical Immunology, University of Messina, 98125 Messina, Italy;
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12
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Liu L, Zhang F, Li J. CircRNA circ_0001821 predicts an unfavorable prognosis and promotes the proliferation of multiple myeloma. ACTA ACUST UNITED AC 2021; 26:716-723. [PMID: 34555307 DOI: 10.1080/16078454.2021.1974199] [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: 12/17/2022]
Abstract
BACKGROUND A previous study reported circ_0001821 serves as a new diagnostic biomarker in lung and gastric cancer. However, whether circ_0001821 associates with the development of multiple myeloma is still unclear. OBJECTIVE To investigate the clinical significance and biological function of circ_0001821 in human multiple myeloma. METHODS The expression of circ_0001821 in bone marrow tissues and cell lines of multiple myeloma was detected by quantitative real-time PCR. The relationship between circ_0001821 expression and clinicopathological characteristics in multiple myeloma patients was determined by the Chi-square test. MTT, Western blotting analysis and flow cytometry were performed to evaluate the impact of circ_0001821 on cell proliferation and apoptosis. RESULTS Circ_0001821 expression was increased in bone marrow tissues and cell lines from multiple myeloma compared with that in normal controls, and its expression was related to hemoglobin, bone injury, β2-MG, and globulin. In multiple myeloma patients aged ≥60 years, high circ_0001821 expression displayed lower overall survival (OS) rate compared with low circ_0001821 expression. High circ_0001821 expression was an independent prognostic indicator for the poor OS. Furthermore, the expression of Caspase-3 protein was lower in patients with high circ_0001821 expression than that in those patients with low circ_0001821expression. Overexpression of circ_0001821 led to increased proliferation and arrested apoptosis of multiple myeloma cells, while knockdown of circ_0001821 had the opposite effects. CONCLUSION High expression of circ_0001821 associated with aggressive pathological indicators and predicted a poor prognosis in multiple myeloma. Circ_0001821 played an oncogenic role in multiple myeloma by modulating cell proliferation and apoptosis.
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Affiliation(s)
- Lin Liu
- Graduate School, Jinan University, Jinan, People's Republic of China.,Department of Hematology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, People's Republic of China
| | - Feng Zhang
- Department of Hematology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, People's Republic of China
| | - Jiajia Li
- Department of Hematology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, People's Republic of China
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13
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Sun R, Liu W, Zhao Y, Chen H, Wang Z, Zhang Y, Sun X, Cui X. Exosomal circRNA as a novel potential therapeutic target for multiple myeloma-related myocardial damage. Cancer Cell Int 2021; 21:311. [PMID: 34120606 PMCID: PMC8201884 DOI: 10.1186/s12935-021-02011-w] [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: 04/20/2021] [Accepted: 06/05/2021] [Indexed: 12/11/2022] Open
Abstract
Introduction Myocardial damage is a mostly incurable complication of multiple myeloma (MM) that seriously affects the treatment outcome and quality of life of patients. Exosomal circular RNAs (exo-circRNAs) play an important role in tumor occurrence and development and are considered key factors in MM pathogenesis. However, the role and mechanism of action of exo-circRNAs in MM-related myocardial damage are still unclear. This study aimed to investigate correlations between exo-circRNAs and MM and to preliminarily explore the role of exo-circRNAs in MM-related myocardial damage. Methods Six MM patients and five healthy controls (HCs) were included in the study. High-throughput sequencing and qRT-PCR verification were used to obtain a profile of abnormally expressed exo-circRNAs. GO, KEGG, miRanda, TargetScan and Metascape were used for bioinformatics analyses. H9C2 cells treated with exosomes from U266 cells were used in cell experiments. CCK-8, PCR, immunofluorescence and western blotting assays were used to detect cell proliferation and expression of autophagy-related indicators. Electron microscopy was used to observe the number of autophagic vesicles. Results Bioinformatics analysis showed that circRNAs with upregulated expression had the potential to promote MM-related myocardial damage. In addition, PCR results confirmed that circ-G042080 was abundantly expressed in the serum exosomes of 20 MM patients. Correlation analysis showed that the expression level of circ-G042080 was positively correlated with the clinical level of MM and MM-related myocardial damage and that circ-G042080 might interfere with MM-related myocardial damage through a downstream miRNA/TLR4 axis. Cell experiments demonstrated that the circ-G042080/hsa-miR-4268/TLR4 axis might exist in H9C2 cells incubated with exosomes and cause abnormal autophagy. Conclusion Abnormal expression of serum exo-circRNAs was found to be associated with MM-related myocardial damage, suggesting that exo-circRNAs might become a new diagnostic marker of MM-related myocardial damage and a therapeutic target. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02011-w.
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Affiliation(s)
- Runjie Sun
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Wei Liu
- College of Nursing, Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Yangang Zhao
- Department of Audit, Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Haoyu Chen
- Department of Cardiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Zhenzhen Wang
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Yanyu Zhang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Xiaoqi Sun
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China
| | - Xing Cui
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, 16369 Jingshi Road, Jinan, 250014, China.
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