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Huyen NT, Ngoc NT, Giang NH, Trang DT, Hanh HH, Binh VD, Giang NV, Canh NX, Xuan NT. CYLD stimulates macrophage phagocytosis of leukemic cells through STAT1 signalling in acute myeloid leukemia. PLoS One 2023; 18:e0283586. [PMID: 37549179 PMCID: PMC10406188 DOI: 10.1371/journal.pone.0283586] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/13/2023] [Indexed: 08/09/2023] Open
Abstract
Acute myeloid leukemia (AML) is the most aggressive hematopoietic malignancy characterized by uncontrolled proliferation of myeloid progenitor cells within the bone marrow. Tumor suppressor cylindromatosis (CYLD) is a deubiquitinating enzyme, which suppresses inflammatory response in macrophages. Macrophages have a central role in the defense against foreign substances and circulating cancer cells by their professional phagocytic capacity. Little is known about contributions of CYLD to changes in biological properties of human macrophages and its involvement in AML. The present study, therefore, explored whether macrophage functions in healthy individuals and AML patients are influenced by CYLD. To this end, ninety-two newly diagnosed AML patients and 80 healthy controls were recruited. The mRNA expression levels of inflammation-related genes were evaluated by real-time PCR, cell maturation, phagocytosis and apoptosis assays by flow cytometry and secretion of inflammatory cytokines by ELISA. As a result, AML patients with the low CYLD expression were significantly higher in M4/M5 than other subtypes according to the FAB type. The low CYLD expression was also closely associated with older patients and enhanced level of LDH in AML. Moreover, treatment of normal macrophages with CYLD siRNA enhanced activation of STAT-1, leading to increases in expressions of maturation markers and IL-6 production as well as suppression in cell apoptosis and phagocytosis, while macrophage phagocytosis from AML M4/M5b was higher than that from healthy controls upon CYLD siRNA transfection through STAT1 signalling. In conclusion, the inhibitory effects of CYLD on macrophage functions are expected to affect the immune response in AML.
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Affiliation(s)
- Nguyen Thanh Huyen
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Ha Noi, Vietnam
- Faculty of Biotechnology, Vietnam National University of Agriculture, Gia Lam, Hanoi, Vietnam
| | - Nguyen Thy Ngoc
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Cau Giay, Ha Noi, Vietnam
| | - Nguyen Hoang Giang
- Institute of Genome Research, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
| | - Do Thi Trang
- Institute of Genome Research, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
| | - Ha Hong Hanh
- Institute of Genome Research, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
| | - Vu Duc Binh
- National Institute of Hematology and Blood Transfusion, Pham Van Bach, Ha Noi, Vietnam
| | - Nguyen Van Giang
- Faculty of Biotechnology, Vietnam National University of Agriculture, Gia Lam, Hanoi, Vietnam
| | - Nguyen Xuan Canh
- Faculty of Biotechnology, Vietnam National University of Agriculture, Gia Lam, Hanoi, Vietnam
| | - Nguyen Thi Xuan
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Ha Noi, Vietnam
- Institute of Genome Research, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
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Xu X, Wei T, Zhong W, Ang R, Lei Y, Zhang H, Li Q. Down-regulation of cylindromatosis protein phosphorylation by BTK inhibitor promotes apoptosis of non-GCB-diffuse large B-cell lymphoma. Cancer Cell Int 2021; 21:195. [PMID: 33827598 PMCID: PMC8025353 DOI: 10.1186/s12935-021-01891-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/23/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Non-germinal center B-cell-like diffuse large B-cell lymphoma (non-GCB-DLBCL) has worse clinical outcome than GCB-DLBCL, and some relapsed/refractory non-GCB-DLBCL (R/R non-GCB-DLBCL) are even resistant to CD20 monoclonal antibody (rituximab). Bruton's tyrosine kinase inhibitors (BTKis) are new drugs for B-cell lymphoma. BTKis can promote apoptosis of DLBCL by inactivating nuclear transcription factor κB (NFκB) signaling pathway. Cylindromatosis (CYLD) is a tumor suppressor and ubiquitinase. CYLD can inactivate NFκB signaling pathway through ubiquitination and regulate the apoptosis of hematological tumors. The ubiquitination of CYLD can be regulated by phosphorylation, suggesting that the regulation of CYLD phosphorylation can be a potential mechanism to promote the apoptosis of hematological tumors. Therefore, we hypothesized that BTKis could promote the apoptosis of non-GCB-DLBCL by regulating the phosphorylation of CYLD, especially in rituximab resistant cases, and we proved this hypothesis through both in vivo and in vitro experiments. METHODS The baseline expression levels of CYLD phosphorylation in non-GCB-DLBCL patients and cell lines were detected by Western Blotting. The non-GCB-DLBCL cell lines were treated with BTKis, and apoptosis induced by BTKis treatment was detected by Western blotting, cell viability assay and Annexin V assay. To verify whether the effect of BTKis on apoptosis in non-GCN-DLBCL cells is CYLD dependent, the expression of CYLD was knocked down by lentiviral shRNAs. To verify the effect of BTKis on the phosphorylation of CYLD and the apoptosis in vivo and in rituximab resistant non-GCB-DLBCL, the xeograft model and rituximab resistant non-GCB-DLBCL cells were generated by tumor cell inoculation and escalation of drug concentrations, respectively. RESULTS BTKis induced apoptosis by down-regulating CYLD phosphorylationin in non GCB-DLBCL, xenograft mouse model, and rituximab-resistant cells, and this effect could be enhanced by rituximab. Knocking-down CYLD reversed apoptosis which was induced by BTKis. BTKis induced CYLD-dependent apoptosis in non-GCB-DLBCL including in rituximab-resistant cells. CONCLUSIONS The present results indicated that CYLD phosphorylation is a potential clinical therapeutic target for non-GCB-DLBCL, especially for rituximab-resistant relapsed/refractory cases.
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Affiliation(s)
- Xin Xu
- The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, 510630, People's Republic of China.,Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 511458, People's Republic of China
| | - Ting Wei
- Department of Hematology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510180, People's Republic of China
| | - Weijie Zhong
- Department of Geriatrics, Hematology and Oncology Ward, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510180, People's Republic of China
| | - Rosalind Ang
- Precision Immunology Institute, Mount Sinai School of Medicine, New York, NY, 10029, USA
| | - Ye Lei
- Precision Immunology Institute, Mount Sinai School of Medicine, New York, NY, 10029, USA
| | - Hui Zhang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jinan, Shandong, 272067, People's Republic of China
| | - Qingshan Li
- Department of Hematology, Guangzhou Red Cross Hospital, Jinan University, No. 396 Tongfuzhong Road, Haizhu District, 510220, Guangzhou, Guangdong, People's Republic of China.
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Mennerich D, Kubaichuk K, Kietzmann T. DUBs, Hypoxia, and Cancer. Trends Cancer 2019; 5:632-653. [PMID: 31706510 DOI: 10.1016/j.trecan.2019.08.005] [Citation(s) in RCA: 126] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/24/2019] [Accepted: 08/27/2019] [Indexed: 02/08/2023]
Abstract
Alterations in protein ubiquitylation and hypoxia are commonly associated with cancer. Ubiquitylation is carried out by three sequentially acting ubiquitylating enzymes and can be opposed by deubiquitinases (DUBs), which have emerged as promising drug targets. Apart from protein localization and activity, ubiquitylation regulates degradation of proteins, among them hypoxia-inducible factors (HIFs). Thereby, various E3 ubiquitin ligases and DUBs regulate HIF abundance. Conversely, several E3s and DUBs are regulated by hypoxia. While hypoxia is a powerful HIF regulator, less is known about hypoxia-regulated DUBs and their impact on HIFs. Here, we review current knowledge about the relationship of E3s, DUBs, and hypoxia signaling. We also discuss the reciprocal regulation of DUBs by hypoxia and use of DUB-specific drugs in cancer.
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Affiliation(s)
- Daniela Mennerich
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, 90570, Finland
| | - Kateryna Kubaichuk
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, 90570, Finland
| | - Thomas Kietzmann
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, 90570, Finland; Biocenter Oulu, University of Oulu, Oulu, 90570, Finland.
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