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Zafeiropoulou K, Kalampounias G, Alexis S, Anastasopoulos D, Symeonidis A, Katsoris P. Autophagy and oxidative stress modulation mediate Bortezomib resistance in prostate cancer. PLoS One 2024; 19:e0289904. [PMID: 38412186 PMCID: PMC10898778 DOI: 10.1371/journal.pone.0289904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 01/27/2024] [Indexed: 02/29/2024] Open
Abstract
Proteasome inhibitors such as Bortezomib represent an established type of targeted treatment for several types of hematological malignancies, including multiple myeloma, Waldenstrom's macroglobulinemia, and mantle cell lymphoma, based on the cancer cell's susceptibility to impairment of the proteasome-ubiquitin system. However, a major problem limiting their efficacy is the emergence of resistance. Their application to solid tumors is currently being studied, while simultaneously, a wide spectrum of hematological cancers, such as Myelodysplastic Syndromes show minimal or no response to Bortezomib treatment. In this study, we utilize the prostate cancer cell line DU-145 to establish a model of Bortezomib resistance, studying the underlying mechanisms. Evaluating the resulting resistant cell line, we observed restoration of proteasome chymotrypsin-like activity, regardless of drug presence, an induction of pro-survival pathways, and the substitution of the Ubiquitin-Proteasome System role in proteostasis by induction of autophagy. Finally, an estimation of the oxidative condition of the cells indicated that the resistant clones reduce the generation of reactive oxygen species induced by Bortezomib to levels even lower than those induced in non-resistant cells. Our findings highlight the role of autophagy and oxidative stress regulation in Bortezomib resistance and elucidate key proteins of signaling pathways as potential pharmaceutical targets, which could increase the efficiency of proteasome-targeting therapies, thus expanding the group of molecular targets for neoplastic disorders.
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Affiliation(s)
- Kalliopi Zafeiropoulou
- Division of Genetics, Cell Biology and Development, Department of Biology, University of Patras, Patras, Greece
- Hematology Division, Department of Internal Medicine, University of Patras Medical School-University Hospital, Patras, Greece
| | - Georgios Kalampounias
- Division of Genetics, Cell Biology and Development, Department of Biology, University of Patras, Patras, Greece
| | - Spyridon Alexis
- Hematology Division, Department of Internal Medicine, University of Patras Medical School-University Hospital, Patras, Greece
| | - Daniil Anastasopoulos
- Division of Genetics, Cell Biology and Development, Department of Biology, University of Patras, Patras, Greece
| | - Argiris Symeonidis
- Hematology Division, Department of Internal Medicine, University of Patras Medical School-University Hospital, Patras, Greece
| | - Panagiotis Katsoris
- Division of Genetics, Cell Biology and Development, Department of Biology, University of Patras, Patras, Greece
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Qian J, Wang Q, Xiao L, Xiong W, Xian M, Su P, Yang M, Zhang C, Li Y, Zhong L, Ganguly S, Zu Y, Yi Q. Development of therapeutic monoclonal antibodies against DKK1 peptide-HLA-A2 complex to treat human cancers. J Immunother Cancer 2024; 12:e008145. [PMID: 38267222 PMCID: PMC10824003 DOI: 10.1136/jitc-2023-008145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND Targeted immunotherapy with monoclonal antibodies (mAbs) is an effective and safe method for the treatment of malignancies. Development of mAbs with improved cytotoxicity, targeting new and known tumor-associated antigens, therefore continues to be an active research area. We reported that Dickkopf-1 (DKK1) is a good target for immunotherapy of human cancers based on its wide expression in different cancers but not in normal tissues. As DKK1 is a secreted protein, mAbs binding directly to DKK1 have limited effects on cancer cells in vivo. METHODS The specificity and antibody-binding capacity of DKK1-A2 mAbs were determined using indirect ELISA, confocal imaging, QIFIKIT antibody-binding capacity and cell surface binding assays. The affinity of mAbs was determined using a surface plasmon resonance biosensor. A flow cytometry-based cell death was performed to detect tumor cell apoptosis. Antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) assays were used to evaluate the ability of DKK1-A2 mAbs to mediate ADCC and CDC activities against tumor cells in vitro. Flow cytometry data were collected with an FACSymphony A3 cell analyzer and analyzed with FlowJo V.10.1 software. Human cancer xenograft mouse models were used to determine the in vivo therapeutic efficacy and the potential safety and toxicity of DKK1-A2 mAbs. In situ TUNEL assay was performed to detect apoptosis in tumors and mouse organs. RESULTS We generated novel DKK1-A2 mAbs that recognize the DKK1 P20 peptide presented by human HLA-A*0201 (HLA-A2) molecules (DKK1-A2 complexes) that are naturally expressed by HLA-A2+DKK1+ cancer cells. These mAbs directly induced apoptosis in HLA-A2+DKK1+ hematologic and solid cancer cells by activating the caspase-9 cascade, effectively lysed the cancer cells in vitro by mediating CDC and ADCC and were therapeutic against established cancers in their xenograft mouse models. As DKK1 is not detected in most human tissues, DKK1-A2 mAbs neither bound to or killed HLA-A2+ blood cells in vitro nor caused tissue damage in tumor-free or tumor-bearing HLA-A2-transgenic mice. CONCLUSION Our study suggests that DKK1-A2 mAbs may be a promising therapeutic agent to treat human cancers.
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Affiliation(s)
- Jianfei Qian
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Qiang Wang
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Liuling Xiao
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Wei Xiong
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Miao Xian
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Pan Su
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Maojie Yang
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Chuanchao Zhang
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Yabo Li
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Ling Zhong
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
| | - Siddhartha Ganguly
- Houston Methodist Neal Cancer Center, Houston Methodist Research Institute, Houston, TX, USA
| | - Youli Zu
- Department of Pathology and Genomic Medicine, Institute for Academic Medicine, Houston Methodist Research Institute, Houston, TX, USA
| | - Qing Yi
- Center for Translational Research in Hematological Malignancies, Houston Methodist Neal Cancer Center/Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA
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Kozalak G, Koşar A. Autophagy-related mechanisms for treatment of multiple myeloma. Cancer Drug Resist 2023; 6:838-857. [PMID: 38239705 PMCID: PMC10792488 DOI: 10.20517/cdr.2023.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 01/22/2024]
Abstract
Multiple myeloma (MM) is a type of hematological cancer that occurs when B cells become malignant. Various drugs such as proteasome inhibitors, immunomodulators, and compounds that cause DNA damage can be used in the treatment of MM. Autophagy, a type 2 cell death mechanism, plays a crucial role in determining the fate of B cells, either promoting their survival or inducing cell death. Therefore, autophagy can either facilitate the progression or hinder the treatment of MM disease. In this review, autophagy mechanisms that may be effective in MM cells were covered and evaluated within the contexts of unfolded protein response (UPR), bone marrow microenvironment (BMME), drug resistance, hypoxia, DNA repair and transcriptional regulation, and apoptosis. The genes that are effective in each mechanism and research efforts on this subject were discussed in detail. Signaling pathways targeted by new drugs to benefit from autophagy in MM disease were covered. The efficacy of drugs that regulate autophagy in MM was examined, and clinical trials on this subject were included. Consequently, among the autophagy mechanisms that are effective in MM, the most suitable ones to be used in the treatment were expressed. The importance of 3D models and microfluidic systems for the discovery of new drugs for autophagy and personalized treatment was emphasized. Ultimately, this review aims to provide a comprehensive overview of MM disease, encompassing autophagy mechanisms, drugs, clinical studies, and further studies.
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Affiliation(s)
- Gül Kozalak
- Faculty of Engineering and Natural Science, Sabancı University, Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Sabancı University, Istanbul 34956, Turkey
| | - Ali Koşar
- Faculty of Engineering and Natural Science, Sabancı University, Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Sabancı University, Istanbul 34956, Turkey
- Turkish Academy of Sciences (TÜBA), Çankaya, Ankara 06700, Turkey
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4
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Wang Y, Yao L, Teng Y, Yin H, Wu Q. PIWIL1 Drives Chemoresistance in Multiple Myeloma by Modulating Mitophagy and the Myeloma Stem Cell Population. Front Oncol 2022; 11:783583. [PMID: 35083142 PMCID: PMC8784391 DOI: 10.3389/fonc.2021.783583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/15/2021] [Indexed: 11/21/2022] Open
Abstract
As an important member of the Argonaute protein family, PIWI-like protein 1 (PIWIL1) plays a key role in tumor cell viability. However, the exact function of PIWIL1 in multiple myeloma (MM) and the underlying mechanism remain unclear. Here, we revealed that PIWIL1 was highly expressed in myeloma cell lines and newly diagnosed MM patients, and that its expression was notably higher in refractory/relapsed MM patients. PIWIL1 promoted the proliferation of MM cells and conferred resistance to chemotherapeutic agents both in vitro and in vivo. More importantly, PIWIL1 enhanced the formation of autophagosomes, especially mitophagosomes, by disrupting mitochondrial calcium signaling and modulating mitophagy-related canonical PINK1/Parkin pathway protein components. Mitophagy/autophagy inhibitors overcome PIWIL1-induced chemoresistance. In addition, PIWIL1 overexpression increased the proportion of side population (SP) cells and upregulated the expression of the stem cell-associated genes Nanog, OCT4, and SOX2, while its inhibition resulted in opposite effects. Taken together, our findings demonstrated that PIWIL1 induced drug resistance by activating mitophagy and regulating the MM stem cell population. PIWIL1 depletion significantly overcame drug resistance and could be used as a novel therapeutic target for reversing resistance in MM patients.
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Affiliation(s)
- Yajun Wang
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lan Yao
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yao Teng
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hua Yin
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiuling Wu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Li H, Roy M, Liang L, Cao W, Hu B, Li Y, Xiao X, Wang H, Ye M, Sun S, Zhang B, Liu J. Deubiquitylase USP12 induces pro-survival autophagy and bortezomib resistance in multiple myeloma by stabilizing HMGB1. Oncogene 2022. [PMID: 34997217 DOI: 10.1038/s41388-021-02167-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 12/10/2021] [Accepted: 12/22/2021] [Indexed: 12/25/2022]
Abstract
Despite the establishment of novel therapeutic interventions, multiple myeloma (MM) remains invariably incurable due to development of drug resistance and subsequent relapse, which are attributed to activation of oncogenic pathways such as autophagy. Deubiquitinating enzymes (DUBs) are promising targets to overcome resistance to proteasome inhibitor-based treatment. Ubiquitin-specific protease-12 (USP12) is a DUB with a known prognostic value in several cancers. We found that USP12 protein levels were significantly higher in myeloma patient samples than in non-cancerous human samples. Depletion of USP12 suppressed cell growth and clonogenicity and inhibited autophagy. Mechanistic studies showed that USP12 interacted with, deubiquitylated and stabilized the critical autophagy mediator HMGB1 (high mobility group box-1) protein. Knockdown of USP12 decreased the level of HMGB1 and suppressed HMGB1-mediated autophagy in MM. Furthermore, basal autophagy activity associated with USP12/HMGB1 was elevated in bortezomib (BTZ)-resistant MM cell lines. USP12 depletion, concomitant with a reduced expression of HMGB1, suppressed autophagy and increased the sensitivity of resistant cells to BTZ. Collectively, our findings have identified an important role of the deubiquitylase USP12 in pro-survival autophagy and resultant BTZ resistance in MM by stabilizing HMGB1, suggesting that the USP12/HMGB1 axis might be pursued as a potential diagnostic and therapeutic target in human MM.
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Sun S, Tao J, Sedghizadeh PP, Cherian P, Junka AF, Sodagar E, Xing L, Boeckman RK, Srinivasan V, Yao Z, Boyce BF, Lipe B, Neighbors JD, Russell RGG, McKenna CE, Ebetino FH. Bisphosphonates for delivering drugs to bone. Br J Pharmacol 2021; 178:2008-2025. [PMID: 32876338 DOI: 10.1111/bph.15251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 12/12/2022] Open
Abstract
Advances in the design of potential bone-selective drugs for the treatment of various bone-related diseases are creating exciting new directions for multiple unmet medical needs. For bone-related cancers, off-target/non-bone toxicities with current drugs represent a significant barrier to the quality of life of affected patients. For bone infections and osteomyelitis, bacterial biofilms on infected bones limit the efficacy of antibiotics because it is hard to access the bacteria with current approaches. Promising new experimental approaches to therapy, based on bone-targeting of drugs, have been used in animal models of these conditions and demonstrate improved efficacy and safety. The success of these drug-design strategies bodes well for the development of therapies with improved efficacy for the treatment of diseases affecting the skeleton. LINKED ARTICLES: This article is part of a themed issue on The molecular pharmacology of bone and cancer-related bone diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.9/issuetoc.
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Affiliation(s)
| | - Jianguo Tao
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Parish P Sedghizadeh
- Center for Biofilms, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | | | - Adam F Junka
- Department of Pharmaceutical Microbiology and Parasitology, Medical University of Wroclaw; Wroclaw Research Centre EIT, Wroclaw, Poland
| | - Esmat Sodagar
- Center for Biofilms, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - Lianping Xing
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Robert K Boeckman
- Department of Chemistry, University of Rochester, Rochester, NY, USA
| | | | - Zhenqiang Yao
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Brendan F Boyce
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Brea Lipe
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Jeffrey D Neighbors
- BioVinc, Pasadena, CA, USA.,Department of Pharmacology and Medicine, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - R Graham G Russell
- The Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Oxford, UK.,Department of Oncology and Metabolism, The Mellanby Centre for Bone Research, University of Sheffield, Sheffield, UK
| | - Charles E McKenna
- Department of Chemistry, University of Southern California, Los Angeles, California, USA
| | - Frank H Ebetino
- BioVinc, Pasadena, CA, USA.,Department of Chemistry, University of Rochester, Rochester, NY, USA.,Department of Oncology and Metabolism, The Mellanby Centre for Bone Research, University of Sheffield, Sheffield, UK
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7
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Tsubaki M, Takeda T, Matsuda T, Seki S, Tomonari Y, Koizumi S, Nagatakiya M, Katsuyama M, Yamamoto Y, Tsurushima K, Ishizaka T, Nishida S. Activation of Serum/Glucocorticoid Regulated Kinase 1/Nuclear Factor-κB Pathway Are Correlated with Low Sensitivity to Bortezomib and Ixazomib in Resistant Multiple Myeloma Cells. Biomedicines 2021; 9:33. [PMID: 33406639 DOI: 10.3390/biomedicines9010033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/14/2020] [Accepted: 12/30/2020] [Indexed: 11/16/2022] Open
Abstract
Multiple myeloma (MM) is an incurable malignancy often associated with primary and acquired resistance to therapeutic agents, such as proteasome inhibitors. However, the mechanisms underlying the proteasome inhibitor resistance are poorly understood. Here, we elucidate the mechanism of primary resistance to bortezomib and ixazomib in the MM cell lines, KMS-20, KMS-26, and KMS-28BM. We find that low bortezomib and ixazomib concentrations induce cell death in KMS-26 and KMS-28BM cells. However, high bortezomib and ixazomib concentrations induce cell death only in KMS-20 cells. During Gene Expression Omnibus analysis, KMS-20 cells exhibit high levels of expression of various genes, including anti-phospho-fibroblast growth factor receptor 1 (FGFR1), chemokine receptor type (CCR2), and serum and glucocorticoid regulated kinase (SGK)1. The SGK1 inhibitor enhances the cytotoxic effects of bortezomib and ixazomib; however, FGFR1 and CCR2 inhibitors do not show such effect in KMS-20 cells. Moreover, SGK1 activation induces the phosphorylation of NF-κB p65, and an NF-κB inhibitor enhances the sensitivity of KMS-20 cells to bortezomib and ixazomib. Additionally, high levels of expression of SGK1 and NF-κB p65 is associated with a low sensitivity to bortezomib and a poor prognosis in MM patients. These results indicate that the activation of the SGK1/NF-κB pathway correlates with a low sensitivity to bortezomib and ixazomib, and a combination of bortezomib and ixazomib with an SGK1 or NF-κB inhibitor may be involved in the treatment of MM via activation of the SGK1/NF-κB pathway.
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Abstract
Inhibiting cell survival and inducing cell death are the main approaches of tumor therapy. Autophagy plays an important role on intracellular metabolic homeostasis by eliminating dysfunctional or unnecessary proteins and damaged or aged cellular organelles to recycle their constituent metabolites that enable the maintenance of cell survival and genetic stability and even promotes the drug resistance, which severely limits the efficacy of chemotherapeutic drugs. Currently, targeting autophagy has a seemingly contradictory effect to suppress and promote tumor survival, which makes the effect of targeting autophagy on drug resistance more confusing and fuzzier. In the review, we summarize the regulation of autophagy by emerging ways, the action of targeting autophagy on drug resistance and some of the new therapeutic approaches to treat tumor drug resistance by interfering with autophagy-related pathways. The full-scale understanding of the tumor-associated signaling pathways and physiological functions of autophagy will hopefully open new possibilities for the treatment of tumor drug resistance and the improvement in clinical outcomes.
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9
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Li G, Liu H, He J, Li Z, Wang Z, Zhou S, Zheng G, He Z, Yang J. TAS-102 has a tumoricidal activity in multiple myeloma. Am J Cancer Res 2020; 10:3752-3764. [PMID: 33294265 PMCID: PMC7716153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/23/2020] [Indexed: 06/12/2023] Open
Abstract
TAS-102/Lonsurf is a new oral anti-tumor drug consisting of trifluridine and tipiracil in a 1:0.5 molar ratio. Lonsurf has been approved globally, including US, Europe Union, and China, to treat patients with advanced colorectal cancer. Ongoing clinical trials are currently conducted for the treatment of other solid cancers. However, the therapeutic potential of TAS-102 in hematological malignancies has not been explored. In this study, we investigate the therapeutic efficacy of TAS-102 in multiple myeloma both in vitro and in vivo. We demonstrate that TAS-102 treatment inhibits tumor cell proliferation in six human myeloma cell lines with IC50 values in a range from 0.64 to 9.10 μM. Dot blotting and immunofluorescent staining show that trifluridine is predominately incorporated into genomic DNAs of myeloma cells. TAS-102 treatment induces myeloma cell apoptosis through cell cycle arrest in G1 phase and activation of cGAS-STING signaling in myeloma cells. In the human myeloma xenograft models, TAS-102 treatment reduces tumor progression and prolongs mouse survival. TAS-102 has shown its efficacies in the drug-resistant myeloma cells, and the combination of TAS-102 and bortezomib has a synergistic anti-myeloma activity. Our preclinical studies indicate that TAS-102 is a potential novel agent for myeloma therapy.
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Affiliation(s)
- Guoli Li
- Cancer Research Institute and Cancer Hospital, Guangzhou Medical UniversityGuangzhou, Guangdong, P. R. China
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
| | - Huan Liu
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
- Center for Hematologic Malignancy, Research Institute Houston Methodist HospitalHouston, Texas 77030, USA
| | - Jin He
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
- Center for Hematologic Malignancy, Research Institute Houston Methodist HospitalHouston, Texas 77030, USA
| | - Zongwei Li
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
- Center for Hematologic Malignancy, Research Institute Houston Methodist HospitalHouston, Texas 77030, USA
| | - Zhiming Wang
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
- Center for Hematologic Malignancy, Research Institute Houston Methodist HospitalHouston, Texas 77030, USA
| | - Shan Zhou
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
- Center for Hematologic Malignancy, Research Institute Houston Methodist HospitalHouston, Texas 77030, USA
| | - Guopei Zheng
- Cancer Research Institute and Cancer Hospital, Guangzhou Medical UniversityGuangzhou, Guangdong, P. R. China
| | - Zhimin He
- Cancer Research Institute and Cancer Hospital, Guangzhou Medical UniversityGuangzhou, Guangdong, P. R. China
| | - Jing Yang
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer CenterHouston, Texas 77030, USA
- Center for Hematologic Malignancy, Research Institute Houston Methodist HospitalHouston, Texas 77030, USA
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10
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Xia J, He Y, Meng B, Chen S, Zhang J, Wu X, Zhu Y, Shen Y, Feng X, Guan Y, Kuang C, Guo J, Lei Q, Wu Y, An G, Li G, Qiu L, Zhan F, Zhou W. NEK2 induces autophagy-mediated bortezomib resistance by stabilizing Beclin-1 in multiple myeloma. Mol Oncol 2020; 14:763-778. [PMID: 31955515 PMCID: PMC7138399 DOI: 10.1002/1878-0261.12641] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/09/2019] [Accepted: 01/14/2020] [Indexed: 01/18/2023] Open
Abstract
NEK2 is associated with drug resistance in multiple cancers. Our previous studies indicated that high NEK2 confers inferior survival in multiple myeloma (MM); thus, a better understanding of the mechanisms by which NEK2 induces drug resistance in MM is required. In this study, we discovered that NEK2 enhances MM cell autophagy, and a combination of autophagy inhibitor chloroquine (CQ) and chemotherapeutic bortezomib (BTZ) significantly prevents NEK2-induced drug resistance in MM cells. Interestingly, NEK2 was found to bind and stabilize Beclin-1 protein but did not affect its mRNA expression and phosphorylation. Moreover, autophagy enhanced by NEK2 was significantly prevented by knockdown of Beclin-1 in MM cells, suggesting that Beclin-1 mediates NEK2-induced autophagy. Further studies demonstrated that Beclin-1 ubiquitination is decreased through NEK2 interaction with USP7. Importantly, knockdown of Beclin-1 sensitized NEK2-overexpressing MM cells to BTZ in vitro and in vivo. In conclusion, we identify a novel mechanism whereby autophagy is activated by the complex of NEK2/USP7/Beclin-1 in MM cells. Targeting the autophagy signaling pathway may provide a promising therapeutic strategy to overcome NEK2-induced drug resistance in MM.
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Affiliation(s)
- Jiliang Xia
- Department of HematologyXiangya HospitalCentral South UniversityChangshaChina
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Yanjuan He
- Department of HematologyXiangya HospitalCentral South UniversityChangshaChina
| | - Bin Meng
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Shilian Chen
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Jingyu Zhang
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Xuan Wu
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Yinghong Zhu
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Yi Shen
- Department of Orthopaedic SurgerySecond Xiangya HospitalCentral South UniversityChangshaChina
- Department of MedicineDivision of Hematology, Oncology and Blood and Marrow TransplantationHolden Comprehensive Cancer CenterUniversity of IowaIAUSA
| | - Xiangling Feng
- Xiangya School of Public HealthCentral South UniversityChangshaChina
| | - Yongjun Guan
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Chunmei Kuang
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Jiaojiao Guo
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Qian Lei
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Yangbowen Wu
- Xiangya School of Public HealthCentral South UniversityChangshaChina
| | - Gang An
- State Key Laboratory of Experimental HematologyInstitute of Hematology & Blood Diseases HospitalChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Guancheng Li
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
| | - Lugui Qiu
- State Key Laboratory of Experimental HematologyInstitute of Hematology & Blood Diseases HospitalChinese Academy of Medical Science & Peking Union Medical CollegeTianjinChina
| | - Fenghuang Zhan
- Department of MedicineDivision of Hematology, Oncology and Blood and Marrow TransplantationHolden Comprehensive Cancer CenterUniversity of IowaIAUSA
| | - Wen Zhou
- Department of HematologyXiangya HospitalCentral South UniversityChangshaChina
- Key Laboratory for Carcinogenesis and InvasionChinese Ministry of EducationKey Laboratory of CarcinogenesisChinese Ministry of HealthCancer Research InstituteSchool of Basic Medical SciencesCentral South UniversityChangshaChina
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11
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Vrábel D, Pour L, Ševčíková S. The impact of NF-κB signaling on pathogenesis and current treatment strategies in multiple myeloma. Blood Rev 2019; 34:56-66. [DOI: 10.1016/j.blre.2018.11.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/14/2018] [Accepted: 11/22/2018] [Indexed: 12/13/2022]
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12
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Fan J, Lee HO, Lee S, Ryu DE, Lee S, Xue C, Kim SJ, Kim K, Barkas N, Park PJ, Park WY, Kharchenko PV. Linking transcriptional and genetic tumor heterogeneity through allele analysis of single-cell RNA-seq data. Genome Res 2018; 28:1217-27. [PMID: 29898899 DOI: 10.1101/gr.228080.117] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 05/24/2018] [Indexed: 12/27/2022]
Abstract
Characterization of intratumoral heterogeneity is critical to cancer therapy, as the presence of phenotypically diverse cell populations commonly fuels relapse and resistance to treatment. Although genetic variation is a well-studied source of intratumoral heterogeneity, the functional impact of most genetic alterations remains unclear. Even less understood is the relative importance of other factors influencing heterogeneity, such as epigenetic state or tumor microenvironment. To investigate the relationship between genetic and transcriptional heterogeneity in a context of cancer progression, we devised a computational approach called HoneyBADGER to identify copy number variation and loss of heterozygosity in individual cells from single-cell RNA-sequencing data. By integrating allele and normalized expression information, HoneyBADGER is able to identify and infer the presence of subclone-specific alterations in individual cells and reconstruct the underlying subclonal architecture. By examining several tumor types, we show that HoneyBADGER is effective at identifying deletions, amplifications, and copy-neutral loss-of-heterozygosity events and is capable of robustly identifying subclonal focal alterations as small as 10 megabases. We further apply HoneyBADGER to analyze single cells from a progressive multiple myeloma patient to identify major genetic subclones that exhibit distinct transcriptional signatures relevant to cancer progression. Other prominent transcriptional subpopulations within these tumors did not line up with the genetic subclonal structure and were likely driven by alternative, nonclonal mechanisms. These results highlight the need for integrative analysis to understand the molecular and phenotypic heterogeneity in cancer.
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13
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Yun Z, Zhichao J, Hao Y, Ou J, Ran Y, Wen D, Qun S. Targeting autophagy in multiple myeloma. Leuk Res 2017; 59:97-104. [PMID: 28599191 DOI: 10.1016/j.leukres.2017.06.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/24/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023]
Abstract
Autophagy plays an important role in plasma cell ontogeny and in the pathophysiology of multiple myeloma. Autophagy is usually considered a pro-survival mechanism, and cooperates with the ubiquitin proteasome system in maintaining the homeostasis of myeloma cells by degrading excessive and misfolded proteins for energy recycling. Therefore, the inhibition of autophagy could effectively induce death in myeloma cells, and could synergize with proteasome inhibitors. However, the excessive activation of autophagy could also lead to the extreme degradation of the organelles that induce autophagic cell death. Hence, the activation of autophagic cell death might also represent a promising approach for treating myeloma. Recent studies have demonstrated that autophagy also mediates drug resistance in myeloma cells and the complications of myeloma, while the inhibition of autophagy may reverse the response to drugs. In this study, we have mainly reviewed recent research on autophagy in relationship to the therapeutic effect, the reversal of drug resistance, and the mediation of complications.
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14
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Wu YX, Yang JH, Saitsu H. Bortezomib-resistance is associated with increased levels of proteasome subunits and apoptosis-avoidance. Oncotarget 2016; 7:77622-77634. [PMID: 27769058 PMCID: PMC5363609 DOI: 10.18632/oncotarget.12731] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/04/2016] [Indexed: 11/25/2022] Open
Abstract
Bortezomib (BTZ), a proteasome inhibitor, is the first proteasome inhibitor to be used in clinical practice. Here we investigated the mechanisms underlying acquired bortezomib resistance in hepatocellular carcinoma (HCC) cells. Using stepwise selection, we established two acquired bortezomib-resistant HCC cell lines, a bortezomib-resistant HepG2 cell line (HepG2/BTZ) and bortezomib-resistant HuH7 cell line (HuH7/BTZ). The 50% inhibitory concentration values of HepG2/BTZ and HuH7/BTZ were respectively 15- and 39-fold higher than those of parental cell lines. Sequence analysis of the bortezomib-binding pocket in the β5-subunit showed no mutation. However, bortezomib-resistant HCC cells had increased expression of β1 and β5 proteasome subunits. These alterations of proteasome expression were accompanied by a weak degree of proteasome inhibition in bortezomib-resistant cells than that in wild-type cells after bortezomib exposure. Furthermore, bortezomib-resistant HCC cells acquired resistance to apoptosis. Bortezomib up-regulated pro-apoptotic proteins of the Bcl-2 protein family, Bax and Noxa in wild-type HCC cells. However, in bortezomib-resistant HCC cells, resistance to apoptosis was accompanied by loss of the ability to stabilize and accumulate these proteins. Thus, increased expression and increased activity of proteasomes constitute an adaptive and auto regulatory feedback mechanism to allow cells to survive exposure bortezomib.
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Affiliation(s)
- Yi-Xin Wu
- 1 Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Jia-Hua Yang
- 2 Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hirotomo Saitsu
- 1 Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
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15
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Hui KF, Yeung PL, Chiang AK. Induction of MAPK- and ROS-dependent autophagy and apoptosis in gastric carcinoma by combination of romidepsin and bortezomib. Oncotarget 2016; 7:4454-67. [PMID: 26683357 DOI: 10.18632/oncotarget.6601] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 11/28/2015] [Indexed: 12/25/2022] Open
Abstract
Proteasome inhibitors and histone deacetylase (HDAC) inhibitors can synergistically induce apoptotic cell death in certain cancer cell types but their combinatorial effect on the induction of autophagy remains unknown. Here, we investigated the combinatorial effects of a proteasome inhibitor, bortezomib, and an HDAC inhibitor, romidepsin, on the induction of apoptotic and autophagic cell death in gastric carcinoma (GC) cells. Isobologram analysis showed that low nanomolar concentrations of bortezomib/romidepsin could synergistically induce killing of GC cells. The synergistic killing was due to the summative effect of caspase-dependent intrinsic apoptosis and caspase-independent autophagy. The autophagic cell death was dependent on the activation of MAPK family members (ERK1/2 and JNK), and generation of reactive oxygen species (ROS), but was independent of Epstein-Barr virus infection. In vivo, bortezomib/romidepsin also significantly induced apoptosis and autophagy in GC xenografts in nude mice. This is the first report demonstrating the potent effect of combination of HDAC and proteasome inhibitors on the induction of MAPK- and ROS-dependent autophagy in addition to caspase-dependent apoptosis in a cancer type.
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16
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Roy M, Liang L, Xiao X, Peng Y, Luo Y, Zhou W, Zhang J, Qiu L, Zhang S, Liu F, Ye M, Zhou W, Liu J. Lycorine Downregulates HMGB1 to Inhibit Autophagy and Enhances Bortezomib Activity in Multiple Myeloma. Am J Cancer Res 2016; 6:2209-2224. [PMID: 27924158 PMCID: PMC5135444 DOI: 10.7150/thno.15584] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 08/12/2016] [Indexed: 12/21/2022] Open
Abstract
Multiple myeloma (MM) is largely incurable and drug-resistant. Novel therapeutic approaches such as inhibiting autophagy or rational drug combinations are aimed to overcome this issue. In this study, we found that lycorine exhibits a promising anti-proliferative activity against MM in vitro and in vivo by inhibiting autophagy. We identified High mobility group box 1 (HMGB1), an important regulator of autophagy, as the most aberrantly expressed protein after lycorine treatment and as a critical mediator of lycorine activity. Gene expression profiling (GEP) analysis showed that higher expression of HMGB1 is linked with the poor prognosis of MM. This correlation was further confirmed in human bone marrow CD138+ primary myeloma cells and MM cell lines. Mechanistically, proteasomal degradation of HMGB1 by lycorine inhibits the activation of MEK-ERK thereby decreases phosphorylation of Bcl-2 resulting in constitutive association of Bcl-2 with Beclin-1. In addition, we observed higher HMGB1 expression in bortezomib resistant cells and the combination of bortezomib plus lycorine was highly efficient in vitro and in vivo myeloma models as well as in re-sensitizing resistant cells to bortezomib. These observations indicate lycorine as an effective autophagy inhibitor and reveal that lycorine alone or in combination with bortezomib is a potential therapeutic strategy.
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17
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Dong Z, Liang S, Hu J, Jin W, Zhan Q, Zhao K. Autophagy as a target for hematological malignancy therapy. Blood Rev 2016; 30:369-80. [DOI: 10.1016/j.blre.2016.04.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 02/27/2016] [Accepted: 04/14/2016] [Indexed: 01/08/2023]
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18
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Liu Z, Xu J, He J, Liu H, Lin P, Wan X, Navone NM, Tong Q, Kwak LW, Orlowski RZ, Yang J. Mature adipocytes in bone marrow protect myeloma cells against chemotherapy through autophagy activation. Oncotarget 2016; 6:34329-41. [PMID: 26455377 PMCID: PMC4741456 DOI: 10.18632/oncotarget.6020] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/05/2015] [Indexed: 12/17/2022] Open
Abstract
A major problem in patients with multiple myeloma is chemotherapy resistance, which develops in myeloma cells upon interaction with bone marrow stromal cells. However, few studies have determined the role of bone marrow adipocytes, a major component of stromal cells in the bone marrow, in myeloma chemotherapy resistance. We reveal that mature human adipocytes activate autophagy and upregulate the expression of autophagic proteins, thereby suppressing chemotherapy-induced caspase cleavage and apoptosis in myeloma cells. We found that adipocytes secreted known and novel adipokines, such as leptin and adipsin. The addition of these adipokines enhanced the expression of autophagic proteins and reduced apoptosis in myeloma cells. In vivo studies further demonstrated the importance of bone marrow-derived adipocytes in the reduced response of myeloma cells to chemotherapy. Our findings suggest that adipocytes, adipocyte-secreted adipokines, and adipocyte-activated autophagy are novel targets for combatting chemotherapy resistance and enhancing treatment efficacy in myeloma patients.
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Affiliation(s)
- Zhiqiang Liu
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jingda Xu
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jin He
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Huan Liu
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Pei Lin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Xinhai Wan
- Department of Genitourinary Medical Oncology-Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Nora M Navone
- Department of Genitourinary Medical Oncology-Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Qiang Tong
- Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas, USA
| | - Larry W Kwak
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Robert Z Orlowski
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jing Yang
- Department of Lymphoma and Myeloma, Division of Cancer Medicine, Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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19
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Zhang M, He J, Yang J. Targeting Human β-Microglobulin with Monoclonal Antibodies in Multiple Myeloma - A Potential in Treatment. Chemotherapy 2016; 5. [PMID: 27478688 PMCID: PMC4966657 DOI: 10.4172/2167-7700.1000190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mingjun Zhang
- Department of Lymphoma/Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA; Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, USA
| | - Jin He
- Department of Lymphoma/Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jing Yang
- Department of Lymphoma/Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA; Cancer Research Institution, Guangzhou Medical University, Guangzhou, China
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20
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Yu W, Chen Y, Xiang R, Xu W, Wang Y, Tong J, Zhang N, Wu Y, Yan H. Novel phosphatidylinositol 3-kinase inhibitor BKM120 enhances the sensitivity of multiple myeloma to bortezomib and overcomes resistance. Leuk Lymphoma 2016; 58:428-437. [PMID: 27439454 DOI: 10.1080/10428194.2016.1190968] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Proteasome inhibitor bortezomib has proven efficacy against multiple myeloma. However, bortezomib activates the phosphatidylinositol 3-kinase/AKT (PI3K/AKT) pathway (which is essential to the development of myeloma), often resulting in drug resistance and disease recurrence. The addition of BKM120 significantly enhanced the apoptotic effects of bortezomib in both bortezomib-sensitive and bortezomib-resistant cells. Treatment with bortezomib alone increased the phosphorylation of AKT (P-AKT), whereas the addition of BKM120 markedly downregulated P-AKT in both bortezomib-sensitive and bortezomib-resistant cells. The clinical relevance of combined treatment with bortezomib and BKM120 was investigated in a xenograft mouse model and in myeloma patients, and the synergy of the combination was confirmed. In conclusion, the addition of BKM120 enhanced the sensitivity of myeloma cells to bortezomib.
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Affiliation(s)
- Wenjun Yu
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Yubao Chen
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Rufang Xiang
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Wenbin Xu
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Yan Wang
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Jia Tong
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Nan Zhang
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
| | - Yingli Wu
- b Hongqiao International Institute of Medicine, Shanghai Tongren Hospital , Shanghai , China.,c Faculty of Basic Medicine, Chemical Biology Division of Shanghai Universities E-Institutes, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education , School of Medicine, Shanghai Jiao Tong University , Shanghai , China
| | - Hua Yan
- a Department of Hematology , Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine , Shanghai , China
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21
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Suk FM, Lin SY, Lin RJ, Hsine YH, Liao YJ, Fang SU, Liang YC. Bortezomib inhibits Burkitt's lymphoma cell proliferation by downregulating sumoylated hnRNP K and c-Myc expression. Oncotarget 2016; 6:25988-6001. [PMID: 26317903 PMCID: PMC4694880 DOI: 10.18632/oncotarget.4620] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/06/2015] [Indexed: 11/26/2022] Open
Abstract
Bortezomib (Velcal) was the first proteasome inhibitor to be approved by the US Food and Drug Administration to treat patients with relapsed/refractory multiple myelomas. Previous studies have demonstrated that bortezomib inhibits tumor cell proliferation and induces apoptosis by blocking the nuclear factor (NF)-κB pathway. However, the exact mechanism by which bortezomib induces cancer cell apoptosis is still not well understood. In this study, we found that bortezomib significantly inhibited cell proliferation in both human Burkitt's lymphoma CA46 and Daudi cells. Through proteomic analysis, we found that bortezomib treatment changed the expression of various proteins in distinct functional categories including unfolding protein response (UPS), RNA processing, protein targeting and biosynthesis, apoptosis, and signal transduction. Among the proteins with altered expression, hnRNP K, hnRNP H, Hsp90α, Grp78, and Hsp7C were common to both Daudi and CA46 cells. Interestingly, bortezomib treatment downregulated the expression of high-molecular-weight (HMw) hnRNP K and c-Myc but upregulated the expression of low-molecular-weight (LMw) hnRNP K. Moreover, cell proliferation was significantly correlated with high expression of HMw hnRNP K and c-Myc. HMw and LMw hnRNP K were identified as sumoylated and desumoylated hnRNP K, respectively. Using transient transfection, we found that sumoylated hnRNP K increased c-Myc expression at the translational level and contributed to cell proliferation, and that Lys422 of hnRNP K is the candidate sumoylated residue. Our results suggest that besides inhibiting the ubiquitin-proteasome pathway, bortezomib may inhibit cell proliferation by downregulating sumoylated hnRNP K and c-Myc expression in Burkitt's lymphoma cells.
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Affiliation(s)
- Fat-Moon Suk
- Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shyr-Yi Lin
- Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ren-Jye Lin
- Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yung-Hsin Hsine
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Yen-Ju Liao
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Sheng-Uei Fang
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yu-Chih Liang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,Traditional Herbal Medicine Research Center, Taipei Medical University Hospital, Taipei, Taiwan
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22
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Zhuang L, Ma Y, Wang Q, Zhang J, Zhu C, Zhang L, Xu X. Atg3 Overexpression Enhances Bortezomib-Induced Cell Death in SKM-1 Cell. PLoS One 2016; 11:e0158761. [PMID: 27391105 PMCID: PMC4938461 DOI: 10.1371/journal.pone.0158761] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 06/21/2016] [Indexed: 12/19/2022] Open
Abstract
Background Myelodysplastic syndrome (MDS) is a group of heterogeneous hematopoietic stem cell malignancies with a high risk of transformation into acute myeloid leukemia (AML). Clonal evolutions are significantly associated with transformation to AML. According to a gene expression microarray, atg3 is downregulated in MDS patients progressing to leukemia, but less is known about the function of Atg3 in the survival and death of MSD/AML cells. Moreover, the role of autophagy as a result of bortezomib treatment is controversial. The current study was designed to investigate the function of Atg3 in SKM-1 cells and to study the effect of Atg3 on cell viability and cell death following bortezomib treatment. Methods Four leukemia cell lines (SKM-1, THP-1, NB4 and K562) and two healthy patients’ bone marrow cells were analyzed for Atg3 expression via qRT-PCR and Western blotting analysis. The role of Atg3 in SKM-1 cell survival and cell death was analyzed by CCK-8 assay, trypan blue exclusion assay, DAPI staining and Annexin V/PI dual staining with or without bortezomib treatment. Western blotting analysis was used to detect proteins in autophagic and caspase signaling pathways. Electron microscopy was used to observe ultrastructural changes after Atg3 overexpression. Results Downregulation of Atg3 expression was detected in four leukemia cell lines compared with healthy bone marrow cells. Atg3 mRNA was significantly decreased in MDS patients’ bone marrow cells. Overexpression of Atg3 in SKM-1 cells resulted in AKT-mTOR-dependent autophagy, a significant reduction in cell proliferation and increased cell death, which could be overcome by the autophagy inhibitor 3-MA. SKM-1 cells overexpressing Atg3 were hypersensitive to bortezomib treatment at different concentrations via autophagic cell death and enhanced sensitivity to apoptosis in the SKM-1 cell line. Following treatment with 3-MA, the sensitivity of Atg3-overexpressing cells to bortezomib treatment was reduced. Atg3 knockdown blocked cell growth inhibition and cell death induced by bortezomib. Conclusion Our preliminary study of Atg3 in the high-risk MDS cell line suggests that Atg3 might be possibly a critical regulator of autophagic cell death and a gene target for therapeutic interventions in MDS.
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Affiliation(s)
- Lin Zhuang
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yan Ma
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qian Wang
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jing Zhang
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chen Zhu
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lu Zhang
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaoping Xu
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- * E-mail:
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23
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Barakat DJ, Mendonca J, Barberi T, Zhang J, Kachhap SK, Paz-Priel I, Friedman AD. C/EBPβ regulates sensitivity to bortezomib in prostate cancer cells by inducing REDD1 and autophagosome-lysosome fusion. Cancer Lett 2016; 375:152-161. [PMID: 26968249 DOI: 10.1016/j.canlet.2016.03.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 01/02/2023]
Abstract
The purpose of this study was to ascertain the mechanisms by which advanced prostate cancer cells resist bortezomib therapy. Several independent studies have shown that cells are protected from proteasome inhibition by increased autophagic activity. We investigated whether C/EBPβ, a transcription factor involved in the control of autophagic gene expression, regulates resistance to proteasome inhibition. In PC3 cells over-expressing C/EBPβ, turnover of autophagic substrates and expression of core autophagy genes were increased. Conversely, C/EBPβ knockdown suppressed autophagosome-lysosome fusion. We also found that C/EBPβ knockdown suppressed REDD1 expression to delay early autophagy, an effect rescued by exogenous REDD1. Cells with suppressed C/EBPβ levels showed delayed autophagy activation upon bortezomib treatment. Knockdown of C/EBPβ sensitized PC3 cells to bortezomib, and blockade of autophagy by chloroquine did not further increase cell death in cells expressing shRNA targeting C/EBPβ. Lastly, we observed a decreased growth of PC3 cells and xenografts with C/EBPβ knockdown and such xenografts were sensitized to bortezomib treatment. Our results demonstrate that C/EBPβ is a critical effector of autophagy via regulation of autolysosome formation and promotes resistance to proteasome inhibitor treatment by increasing autophagy.
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Affiliation(s)
- David J Barakat
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Janet Mendonca
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Theresa Barberi
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Jing Zhang
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Sushant K Kachhap
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Ido Paz-Priel
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Alan D Friedman
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland, USA.
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