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Forster S, Radpour R, Ochsenbein AF. Molecular and immunological mechanisms of clonal evolution in multiple myeloma. Front Immunol 2023; 14:1243997. [PMID: 37744361 PMCID: PMC10516567 DOI: 10.3389/fimmu.2023.1243997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Multiple myeloma (MM) is a hematologic malignancy characterized by the proliferation of clonal plasma cells in the bone marrow (BM). It is known that early genetic mutations in post-germinal center B/plasma cells are the cause of myelomagenesis. The acquisition of additional chromosomal abnormalities and distinct mutations further promote the outgrowth of malignant plasma cell populations that are resistant to conventional treatments, finally resulting in relapsed and therapy-refractory terminal stages of MM. In addition, myeloma cells are supported by autocrine signaling pathways and the tumor microenvironment (TME), which consists of diverse cell types such as stromal cells, immune cells, and components of the extracellular matrix. The TME provides essential signals and stimuli that induce proliferation and/or prevent apoptosis. In particular, the molecular pathways by which MM cells interact with the TME are crucial for the development of MM. To generate successful therapies and prevent MM recurrence, a thorough understanding of the molecular mechanisms that drive MM progression and therapy resistance is essential. In this review, we summarize key mechanisms that promote myelomagenesis and drive the clonal expansion in the course of MM progression such as autocrine signaling cascades, as well as direct and indirect interactions between the TME and malignant plasma cells. In addition, we highlight drug-resistance mechanisms and emerging therapies that are currently tested in clinical trials to overcome therapy-refractory MM stages.
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Affiliation(s)
- Stefan Forster
- Tumor Immunology, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ramin Radpour
- Tumor Immunology, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Adrian F. Ochsenbein
- Tumor Immunology, Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Zhang X, Hong S, Yu C, Shen X, Sun F, Yang J. Comparative analysis between high -grade serous ovarian cancer and healthy ovarian tissues using single-cell RNA sequencing. Front Oncol 2023; 13:1148628. [PMID: 37124501 PMCID: PMC10140397 DOI: 10.3389/fonc.2023.1148628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/31/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction High-grade serous ovarian cancer (HGSOC) is the most common histological subtype of ovarian cancer, and is associated with high mortality rates. Methods In this study, we analyzed specific cell subpopulations and compared different gene functions between healthy ovarian and ovarian cancer cells using single-cell RNA sequencing (ScRNA-seq). We delved deeper into the differences between healthy ovarian and ovarian cancer cells at different levels, and performed specific analysis on endothelial cells. Results We obtained scRNA-seq data of 6867 and 17056 cells from healthy ovarian samples and ovarian cancer samples, respectively. The transcriptional profiles of the groups differed at various stages of ovarian cell development. A detailed comparison of the cell cycle, and cell communication of different groups, revealed significant differences between healthy ovarian and ovarian cancer cells. We also found that apoptosis-related genes, URI1, PAK2, PARP1, CLU and TIMP3, were highly expressed, while immune-related genes, UBB, RPL11, CAV1, NUPR1 and Hsp90ab1, were lowly expressed in ovarian cancer cells. The results of the ScRNA-seq were verified using qPCR. Discussion Our findings revealed differences in function, gene expression and cell interaction patterns between ovarian cancer and healthy ovarian cell populations. These findings provide key insights on further research into the treatment of ovarian cancer.
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Affiliation(s)
- Xiao Zhang
- Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Shihao Hong
- Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Chengying Yu
- Department of Obstetrics and Gynecology, Longyou People’s Hospital, Quzhou, China
| | | | - Fangying Sun
- Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Jianhua Yang
- Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
- *Correspondence: Jianhua Yang,
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Zhang J, Yin Z, Yu L, Wang Z, Liu Y, Huang X, Wan S, Lan HY, Wang H. Macrophage Rmp Ameliorates Myocardial Infarction by Modulating Macrophage Polarization in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6248779. [PMID: 36092156 PMCID: PMC9459438 DOI: 10.1155/2022/6248779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/01/2022] [Accepted: 08/12/2022] [Indexed: 11/28/2022]
Abstract
Background Inflammation plays important roles during myocardial infarction (MI). Macrophage polarization is a major factor that drives the inflammatory process. Our previous study found that RNA polymerase II subunit 5-mediating protein (RMP) knockout in cardiomyocytes caused heart failure by impairing mitochondrial structure and function. However, whether macrophage RMP plays a role in MI has not been investigated. Methods Macrophage RMP-knockout in combination with a mouse model of MI was used to study the function of macrophage RMP in MI. Next, we modified bone marrow-derived macrophages (BMDMs) by plasmid transfection, and the BMDMs were administered to LysM-Cre/DTR mice by tail vein injection. Immunoblotting and immunofluorescence were used to detect macrophage polarization, fibrosis, angiogenesis, and the p38 signaling pathway in each group. Results Macrophage RMP deficiency aggravates cardiac dysfunction, promotes M1 polarization, and inhibits angiogenesis after MI. However, RMP overexpression in macrophages promotes M2 polarization and angiogenesis after MI. Mechanistically, we found that RMP regulates macrophage polarization through the heat shock protein 90- (HSP90-) p38 signaling pathway. Conclusions Macrophage RMP plays a significant role in MI, likely by regulating macrophage polarization via the HSP90-p38 signaling pathway.
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Affiliation(s)
- Jian Zhang
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Zongtao Yin
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Liming Yu
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Zhishang Wang
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Yu Liu
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Xiaoru Huang
- Department of Medicine & Therapeutics, and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Song Wan
- Division of Cardiothoracic Surgery, Department of Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT, Hong Kong
| | - Hui-yao Lan
- Department of Medicine & Therapeutics, and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Huishan Wang
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
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ALCAM regulates multiple myeloma chemoresistant side population. Cell Death Dis 2022; 13:136. [PMID: 35145058 PMCID: PMC8831486 DOI: 10.1038/s41419-022-04556-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/23/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022]
Abstract
Drug-resistance is a major problem preventing a cure in patients with multiple myeloma (MM). Previously, we demonstrated that activated-leukocyte-cell-adhesion-molecule (ALCAM) is a prognostic factor in MM and inhibits EGF/EGFR-initiated MM clonogenicity. In this study, we further showed that the ALCAM-EGF/EGFR axis regulated the MM side population (SP)-mediated drug-resistance. ALCAM-knockdown MM cells displayed an enhanced ratio of SP cells in the presence of bone marrow stromal cells (BMSCs) or with the supplement of recombinant EGF. SP MM cells were resistant to chemotherapeutics melphalan or bortezomib. Drug treatment stimulated SP-genesis. Mechanistically, EGFR, primed with EGF, activated the hedgehog pathway and promoted the SP ratio; meanwhile, ALCAM inhibited EGFR downstream pro-MM cell signaling. Further, SP MM cells exhibited an increased number of mitochondria compared to the main population. Interference of the mitochondria function strongly inhibited SP-genesis. Animal studies showed that combination therapy with both an anti-MM agent and EGFR inhibitor gefitinib achieved prolonged MM-bearing mice survival. Hence, our work identifies ALCAM as a novel negative regulator of MM drug-resistance, and EGFR inhibitors may be used to improve MM therapeutic efficacy.
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MiR-197-3p reduces bortezomib resistance in multiple myeloma by inhibiting IL-6 expression in a MEAF6-dependent manner. Leuk Res 2022; 114:106785. [DOI: 10.1016/j.leukres.2022.106785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/22/2021] [Accepted: 01/05/2022] [Indexed: 02/01/2023]
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Herranz-Montoya I, Park S, Djouder N. A comprehensive analysis of prefoldins and their implication in cancer. iScience 2021; 24:103273. [PMID: 34761191 PMCID: PMC8567396 DOI: 10.1016/j.isci.2021.103273] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Prefoldins (PFDNs) are evolutionary conserved co-chaperones, initially discovered in archaea but universally present in eukaryotes. PFDNs are prevalently organized into hetero-hexameric complexes. Although they have been overlooked since their discovery and their functions remain elusive, several reports indicate they act as co-chaperones escorting misfolded or non-native proteins to group II chaperonins. Unlike the eukaryotic PFDNs which interact with cytoskeletal components, the archaeal PFDNs can bind and stabilize a wide range of substrates, possibly due to their great structural diversity. The discovery of the unconventional RPB5 interactor (URI) PFDN-like complex (UPC) suggests that PFDNs have versatile functions and are required for different cellular processes, including an important role in cancer. Here, we summarize their functions across different species. Moreover, a comprehensive analysis of PFDNs genomic alterations across cancer types by using large-scale cancer genomic data indicates that PFDNs are a new class of non-mutated proteins significantly overexpressed in some cancer types.
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Affiliation(s)
- Irene Herranz-Montoya
- Growth Factors, Nutrients and Cancer Group, Molecular Oncology Programme, Centro Nacional de Investigaciones Oncológicas, CNIO, Madrid 28029, Spain
| | - Solip Park
- Computational Cancer Genomics Group, Structural Biology Programme, Centro Nacional de Investigaciones Oncológicas, CNIO, Madrid 28029, Spain
| | - Nabil Djouder
- Growth Factors, Nutrients and Cancer Group, Molecular Oncology Programme, Centro Nacional de Investigaciones Oncológicas, CNIO, Madrid 28029, Spain
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Feng Y, Chen K, Pan L, Jiang W, Pang P, Mao G, Zhang B, Chen S. RPB5-mediating protein promotes the progression of non-small cell lung cancer by regulating the proliferation and invasion. J Thorac Dis 2021; 13:299-311. [PMID: 33569210 PMCID: PMC7867794 DOI: 10.21037/jtd-20-3461] [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] [Indexed: 11/06/2022]
Abstract
Background This study aimed to investigate the relationship between RNA polymerase II subunit 5 (RPB5)-mediating protein (RMP) and clinicopathological characteristics of non-small cell lung cancer (NSCLC) patients by measuring the expression level of RMP in human NSCLC tissues and cell lines. At the same time, we studied the impact of RMP on the biological function of cancer, providing strong support for gene targeted therapy of NSCLC. Methods Real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot were used to determine the expression levels of messenger (m)RNA and protein in NSCLC cell lines and tissues. Cell counting kit 8 (CCK8) assay and flow cytometry were selected to detect cell proliferation, cycle and apoptosis. The wound healing assay was chosen to detect the migration and invasion ability of cells. The xenograft model was performed to study the function of RMP in vivo. Immunohistochemical (IHC) staining showed the levels of RMP, Bcl-2, Bax and caspase-3. Results First, mRNA and protein levels of RMP were relatively overexpressed in NSCLC cells. Compared with the corresponding normal tissues, the mRNA and protein levels of RMP were significantly higher in human NSCLC tissues. Concurrently, we found that the expression of RMP was related to the status of lymph nodes (LNs) in cancer tissues and T stage. Then, RMP overexpression promoted the proliferation of A549. At the same time, RMP provided A549 cells the ability to resist chemotherapy and radiotherapy; when A549 cells were treated with gefitinib and radiation, RMP reduced apoptosis. We also found that RMP can protect A549 from G2 block caused by radiation. Over-irradiated RMP-overexpressed A549 cells had lower Bcl2-associated X protein (Bax) levels and higher B-cell lymphoma 2 (Bcl-2) levels. The migration and invasion ability of A549 cells was increased by RMP. Finally, RMP can promote tumor growth by increasing Bcl-2 levels and decreasing Bax and caspase-3 levels in the xenograft model. Conclusions There is potential for RMP to develop into a diagnostic and therapeutic target for NSCLC.
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Affiliation(s)
- Yu Feng
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ke Chen
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Liangbin Pan
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Wei Jiang
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Pei Pang
- Department of Pathology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Guocai Mao
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Biao Zhang
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shaomu Chen
- Department of Thoracic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
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Huang J, Huang LQ, He HS, Yan J, Huang C, Wang R, Guan Y, Huang DP. Overexpression of heme oxygenase-1 in bone marrow stromal cells promotes multiple myeloma resistance through the JAK2/STAT3 pathway. Life Sci 2020; 257:118088. [PMID: 32663573 DOI: 10.1016/j.lfs.2020.118088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 06/09/2020] [Accepted: 07/08/2020] [Indexed: 01/16/2023]
Abstract
AIMS Bone marrow stromal cells (BMSCs) have been reported to interact with multiple myeloma (MM) and exert a vital function of the survival of MM cells. Heme oxygenase-1 (HO-1), a cytoprotective enzyme, has the potential to become a hematological malignancies targeted gene. This study aimed to investigate the role of HO-1 in MM resistance of BMSCs and its possible mechanisms. MAIN METHODS In this study, the expression of related proteins was detected by RT-qPCR and Western blot. HO-1 expression was regulated by lentivirus transfection. Cell viability and apoptosis were detected by Flow cytometry and CCK-8. Cytokine secretion was assayed by ELISA. The survival and carcinogenic abilities was detected by clone formation assay. KEY FINDINGS HO-1 expression in the BMSCs of stage III MM patients was substantially increased, compared with that of healthy donors and stage I/II patients. The results of co-culture of BMSCs and MM cells indicated that, the upregulated HO-1 inhibited the apoptosis of co-cultured MM cells, while downregulated HO-1 promoted the chemosensitivity of co-cultured MM cells, moreover, the upregulated HO-1 in BMSCs increased the colony-formation ability of MM cells. This protective capability may be regulated by CXCL12/CXCR4 signaling. High HO-1 expression in BMSCs can promote the phosphorylation of the JAK2/STAT3 pathway, thereby increasing secretion of SDF-1 in BMSCs and activating CXCL12/CXCR4 signaling. In addition, direct contact between BMSCs and MM cells may cause drug resistance. SIGNIFICANCE These results indicated that the regulation of HO-1 in BMSCs may be a new effective method of MM therapy.
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Affiliation(s)
- Jun Huang
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Lai-Quan Huang
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - He-Sheng He
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Jiawei Yan
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Chen Huang
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Ran Wang
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Yan Guan
- Wannan Medical College, Wuhu 241001, China
| | - Dong-Ping Huang
- Department of Hematology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China.
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Ji Y, Shen J, Li M, Zhu X, Wang Y, Ding J, Jiang S, Chen L, Wei W. RMP/URI inhibits both intrinsic and extrinsic apoptosis through different signaling pathways. Int J Biol Sci 2019; 15:2692-2706. [PMID: 31754340 PMCID: PMC6854365 DOI: 10.7150/ijbs.36829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 08/24/2019] [Indexed: 02/06/2023] Open
Abstract
The evading apoptosis of tumor cells may result in chemotherapy resistance. Therefore, investigating what molecular events contribute to drug-induced apoptosis, and how tumors evade apoptotic death, provides a paradigm to explain the relationship between cancer genetics and treatment sensitivity. In this study, we focused on the role of RMP/URI both in cisplatin-induced endogenous apoptosis and in TRAIL-induced exogenous apoptosis in HCC cells. Although flow cytometric analysis indicated that RMP overexpression reduced the apoptosis rate of HCC cells treated with both cisplatin and TRAIL, there was a difference in mechanism between the two treatments. Western blot showed that in intrinsic apoptosis induced by cisplatin, the overexpression of RMP promoted the Bcl-xl expression both in vitro and in vivo. Besides, RMP activated NF-κB/p65(rel) through the phosphorylation of ATM. However, in TRAIL-induced extrinsic apoptosis, RMP significantly suppressed the transcription and expression of P53. Moreover, the forced expression of P53 could offset this inhibitory effect. In conclusion, we presumed that RMP inhibited both intrinsic and extrinsic apoptosis through different signaling pathways. NF-κB was distinctively involved in the RMP circumvention of intrinsic apoptosis, but not in the extrinsic apoptosis of HCC cells. RMP might play an important role in defects of apoptosis, hence the chemotherapeutic resistance in hepatocellular carcinoma. These studies are promising to shed light on a more rational approach to clinical anticancer drug design and therapy.
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Affiliation(s)
- Yuan Ji
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Jian Shen
- Department of Interventional Radiology, First Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Min Li
- Department of Tumor, People Hospital of Maanshan, Maanshan, 243000, China
| | - Xiaoxiao Zhu
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Yanyan Wang
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Jiazheng Ding
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Shunyao Jiang
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Linqi Chen
- Department of Endocrinology, Children's Hospital affiliated to Soochow University, Suzhou, 215000, China
| | - Wenxiang Wei
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
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Zhang J, Sheng J, Dong L, Xu Y, Yu L, Liu Y, Huang X, Wan S, Lan HY, Wang H. Cardiomyocyte-specific loss of RNA polymerase II subunit 5-mediating protein causes myocardial dysfunction and heart failure. Cardiovasc Res 2019; 115:1617-1628. [PMID: 30590389 DOI: 10.1093/cvr/cvy307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/22/2018] [Accepted: 12/17/2018] [Indexed: 12/13/2022] Open
Abstract
AIMS Myocardial dysfunction is an important cause of heart failure (HF). RNA polymerase II subunit 5 (RPB5)-mediating protein (RMP) is a transcriptional mediating protein which co-ordinates cellular processes including gene expression, metabolism, proliferation, and genome stability. However, its role in cardiac disease remains unknown. We aimed to determine the role and regulatory mechanisms of RMP in cardiomyocyte function and the development of HF. METHODS AND RESULTS Myocardial RMP expression was examined in human heart tissues from healthy controls and patients with advanced HF. Compared to normal cardiac tissues, RMP levels were significantly decreased in the myocardium of patients with advanced HF. To investigate the role of RMP in cardiac function, Cre-loxP recombinase technology was used to generate tamoxifen-inducible cardiomyocyte-specific Rmp knockout mice. Unexpectedly, cardiomyocyte-specific deletion of Rmp in mice resulted in contractile dysfunction, cardiac dilatation, and fibrosis. Furthermore, the lifespan of cardiac-specific Rmp-deficient mice was significantly shortened when compared with littermates. Mechanistically, we found that chronic HF in Rmp-deficient mice was associated with impaired mitochondrial structure and function, which may be mediated via a transforming growth factor-β/Smad3-proliferator-activated receptor coactivator1α (PGC1α)-dependent mechanism. PGC1α overexpression partially rescued chronic HF in cardiomyocyte-specific Rmp-deficient mice, and Smad3 blockade protected against the loss of PGC1α and adenosine triphosphate content that was induced by silencing RMP in vitro. CONCLUSIONS RMP plays a protective role in chronic HF. RMP may protect cardiomyocytes from injury by maintaining PGC1α-dependent mitochondrial biogenesis and function. The results from this study suggest that RMP may be a potential therapeutic agent for treating HF.
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Affiliation(s)
- Jian Zhang
- Department of Cardiovascular Surgery, Shenyang Northern Hospital, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China.,Division of Cardiothoracic Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing Street, Shatin, NT, Hong Kong
| | - Jingyi Sheng
- Department of Medicine & Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Shatin, NT, Hong Kong
| | - Liwei Dong
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, the Second Military Medical University, No.225, Changhai Road, Shanghai, China.,National Center for Liver Cancer, No.366, Qianju Road, Shanghai, China
| | - Yinli Xu
- Department of Cardiovascular Surgery, Shenyang Northern Hospital, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Liming Yu
- Department of Cardiovascular Surgery, Shenyang Northern Hospital, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Yu Liu
- Department of Cardiovascular Surgery, Shenyang Northern Hospital, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
| | - Xiaoru Huang
- Department of Medicine & Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Shatin, NT, Hong Kong
| | - Song Wan
- Division of Cardiothoracic Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing Street, Shatin, NT, Hong Kong
| | - Hui-Yao Lan
- Department of Medicine & Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Shatin, NT, Hong Kong
| | - Huishan Wang
- Department of Cardiovascular Surgery, Shenyang Northern Hospital, No. 83, Wenhua Road, Shenhe District, Shenyang, Liaoning, China
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Chen S, Feng Y, Zhang B, Chen X, Wei W, Ma H. RMP promotes the proliferation and radioresistance of esophageal carcinoma. J Cancer 2019; 10:3698-3705. [PMID: 31333787 PMCID: PMC6636304 DOI: 10.7150/jca.32680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 05/16/2019] [Indexed: 11/11/2022] Open
Abstract
RMP is a RNA polymerase II Subunit RPB-5 associated protein shown to act as an oncogene in several cancer. However, the mechanism of the involvement of RMP in esophageal cancer (EC) remains unclear. We analyzed RMP expression in EC cell lines and EC tissues. The connection between RMP and clinical pathological features of EC was also elucidated. To investigate the role of RMP in EC, We performed CCK-8 assay to evaluate cell proliferation, and Annexin V/PI double-staining to evaluate cell apoptosis. Effect of RMP on tumor progression in nude mouse models was assessed by measurement of volume and weight of tumors. Expression of RMP, CEA and CA199 in vivo were measured by Inmunohistochemical staining. First of all, our study showed that RMP was highly expressed in EC cell lines (compared with normal cells) and tumor tissues (compare with corresponding normal tissues). Then, we found that RMP was bound up with the status of nodal and T stage which indicating that RMP may be related to the growth and malignant degree of EC. Moreover upregulation of RMP could contribute to tumor growth in vitro and vivo. In addition, the results also showed that overexpression of RMP could significantly reduce the susceptibility to radiotherapy. Taken together, all these further suggested that RMP would play a chance-promoting in EC which may provide us a powerful goal for gene targeting treatment of esophageal cancer.
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Affiliation(s)
- Shaomu Chen
- Department of Cell Biology, School of Medicine, Soochow University, Suzhou, Jiangsu, China.,Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yu Feng
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Biao Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xiaochun Chen
- Department of Cardiothoracic surgery, Suzhou Science & Technology Town Hospital, Suzhou, Jiangsu, China
| | - Wenxiang Wei
- Department of Cell Biology, School of Medicine, Soochow University, Suzhou, Jiangsu, China
| | - Haitao Ma
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
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Xing F, Wang S, Zhou J. The Expression of MicroRNA-598 Inhibits Ovarian Cancer Cell Proliferation and Metastasis by Targeting URI. MOLECULAR THERAPY-ONCOLYTICS 2018; 12:9-15. [PMID: 30662936 PMCID: PMC6325085 DOI: 10.1016/j.omto.2018.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 12/02/2018] [Indexed: 11/17/2022]
Abstract
Unconventional prefoldin RPB5 interactor (URI, or RMP, a member of the prefoldin family of molecular chaperones) exhibits oncogenic activity in several types of cancer, including ovarian cancer. However, the underlying regulatory mechanism in ovarian cancer remains unclear. MicroRNAs (miRNAs) negatively regulate gene expression, and their dysregulation has been implicated in tumorigenesis. To elucidate the role of miRNAs in URI-induced ovarian cancer, miR-598 and URI were overexpressed in the SKOV3 ovarian cancer cell line. The CCK8 kit was used to determine cell proliferation, and the Transwell assay was used to measure cell invasion and migration. RT-PCR and western blotting were used to analyze the expression of miR-598 and URI, and the luciferase reporter assay was used to examine the interaction between miR-598 and URI. Nude mice were used to characterize the regulation of tumor growth in vivo. The results showed that the expression of miR-598 inhibited the proliferation, invasion, and migration of ovarian cancer cells by targeting URI. The inhibitory effect of miR-598 was reversed by overexpression of URI. The luciferase reporter assay showed that miR-598 downregulated URI by directly targeting the 3′ UTR of URI. In vivo studies showed that the expression of miR-598 significantly inhibited the growth of tumors. Taken together, the results suggested that miR-598 inhibited tumor growth and metastasis by targeting URI.
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Affiliation(s)
- Feng Xing
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital of Tongji University, Tongji University School of Medicine, No. 301 Middle Yan Chang Road, Shanghai, 200072, China
| | - Shuo Wang
- Department of Ultrasound, Tongji Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Jianhong Zhou
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital of Tongji University, Tongji University School of Medicine, No. 301 Middle Yan Chang Road, Shanghai, 200072, China
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13
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Lynham J, Houry WA. The Multiple Functions of the PAQosome: An R2TP- and URI1 Prefoldin-Based Chaperone Complex. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1106:37-72. [DOI: 10.1007/978-3-030-00737-9_4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Yen CH, Hsiao HH. NRF2 Is One of the Players Involved in Bone Marrow Mediated Drug Resistance in Multiple Myeloma. Int J Mol Sci 2018; 19:E3503. [PMID: 30405034 PMCID: PMC6274683 DOI: 10.3390/ijms19113503] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 10/28/2018] [Accepted: 11/04/2018] [Indexed: 02/07/2023] Open
Abstract
Multiple myeloma with clonal plasma expansion in bone marrow is the second most common hematologic malignancy in the world. Though the improvement of outcomes from the achievement of novel agents in recent decades, the disease progresses and leads to death eventually due to the elusive nature of myeloma cells and resistance mechanisms to therapeutic agents. In addition to the molecular and genetic basis of resistance pathomechanisms, the bone marrow microenvironment also contributes to disease progression and confers drug resistance in myeloma cells. In this review, we focus on the current state of the literature in terms of critical bone marrow microenvironment components, including soluble factors, cell adhesion mechanisms, and other cellular components. Transcriptional factor nuclear factor erythroid-derived-2-like 2 (NRF2), a central regulator for anti-oxidative stresses and detoxification, is implicated in chemoresistance in several cancers. The functional roles of NRF2 in myeloid-derived suppressor cells and multiple myeloma cells, and the potential of targeting NRF2 for overcoming microenvironment-mediated drug resistance in multiple myeloma are also discussed.
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Affiliation(s)
- Chia-Hung Yen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
| | - Hui-Hua Hsiao
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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15
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Zhang F, Hu X, Gu Y, Bian H, Xu Z, Wang Q, Chen J, Lu Y, Sun L, Zheng Q, Gu J. URI knockdown induces autophagic flux in gastric cancer cells. Am J Cancer Res 2018; 8:2140-2149. [PMID: 30416863 PMCID: PMC6220146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/21/2018] [Indexed: 06/09/2023] Open
Abstract
URI, a member of the prefoldin family of molecular chaperones, functions in the regulation of nutrient-sensitive, mTOR-dependent transcription signaling pathways. Previous studies of several tumor types demonstrated that URI exhibits characteristics similar to those of an oncoprotein. URI has been shown as a mitochondrial substrate of S6 kinase 1 (S6K1), which acts to integrate nutrient and growth factor signals to promote cell growth and survival. Notably, the Akt/mTOR/p70S6K signaling pathway constitutes major negative regulatory mechanism of autophagy. However, the role of URI in autophagy has not been explored. Here, we investigated the involvement of URI in autophagy by manipulating its expression in MGC-803 and HGC-27 cells using siRNA and transfection approaches. GFP-LC3 punctum aggregation was assessed by confocal microscopy, whereas formation of autophagic vesicles was assessed using transmission electron microscopy. NH4Cl was used to inhibit autophagosome-lysosome fusion and to monitor autophagic flux. Expression of LC3-I, LC3-II, beclin1, total and phosphorylated mTOR, and p70S6k was assessed by Western blotting. The results showed that knockdown of URI induced significant autophagic flux in gastric cancer cells. URI regulates the expression of beclin1, which is essential for initiation of conventional autophagy. Levels of p-mTOR (Ser2448) and p-p70S6K (Thr389) increased in URI-overexpressing cells treated with the mTOR inhibitor rapamycin but decreased in URI-silenced cells. The inhibitory effect of URI silencing on mTOR and p70S6K phosphorylation was antagonized by the autophagy inhibitor 3-methyladenine. These results suggest that URI knockdown-induced autophagy is associated with the mTOR/p70S6K signaling pathway, indicating the potential existence of a novel autophagy regulatory mechanism mediated by URI.
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Affiliation(s)
- Fei Zhang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Xiaoxia Hu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
- Department of Clinical Laboratory, Shanghai Pudong Gongli HospitalShanghai 200135, China
| | - Yu Gu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
- Department of Hematology, Affiliated People’s Hospital of Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Huiqin Bian
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Zhonghai Xu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Qian Wang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Jinnan Chen
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Yaojuan Lu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
- Shenzhen Academy of Peptide Targeting Technology at PingshanShenzhen 518118, China
| | - Lichuan Sun
- Department of Medicine, School of Medicine, Tulane Health Sciences CenterNew Orleans, LA 70112-2699, USA
- Shenzhen Academy of Peptide Targeting Technology at PingshanShenzhen 518118, China
| | - Qiping Zheng
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
- Shenzhen Academy of Peptide Targeting Technology at PingshanShenzhen 518118, China
| | - Junxia Gu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
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16
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Zhou W, Wang Q, Xu Y, Jiang J, Guo J, Yu H, Wei W. RMP promotes epithelial-mesenchymal transition through NF-κB/CSN2/Snail pathway in hepatocellular carcinoma. Oncotarget 2018; 8:40373-40388. [PMID: 28423737 PMCID: PMC5522250 DOI: 10.18632/oncotarget.16177] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 02/20/2017] [Indexed: 01/06/2023] Open
Abstract
Epithelial-mesenchymal transition (EMT) is a significant risk factor for metastasis in hepatocellular carcinoma (HCC) patients and with poor prognosis. In this study, we demonstrate the key role of RPB5-mediating protein (RMP) in EMT of HCC cells and the mechanism by which RMP promote EMT. RMP increases migration, invasion, and the progress of EMT of HCC cells, which facilitates the accumulation of Snail, a transcriptional repressor involved in EMT initiation. NF-κB is activated by RMP, which directly promotes the expression of COP9 signalosome 2 (CSN2) to repress the degradation of Snail. Pulmonary metastases mouse model demonstrates that RMP induces metastasis in vivo. Immunohistochemical analysis of human HCC tissues confirms the correlation of RMP with the expression of E-cadherin, p65, CSN2 and Snail in vivo. Collectively, these findings indicate that RMP promotes EMT and HCC metastasis through NF-κB/CSN2/Snail pathway. These results suggest that RMP and p65 may serve as potential candidates of the targets in the treatment of metastatic HCC.
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Affiliation(s)
- Wei Zhou
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Qi Wang
- Department of Tumor Biotherapy, Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Yi Xu
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Jingting Jiang
- Department of Tumor Biotherapy, Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Jingchun Guo
- State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Huijun Yu
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
| | - Wenxiang Wei
- Department of Cell Biology, Institute of Bioengineering, School of Medicine, Soochow University, Suzhou 215123, China
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17
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Thomas PA, Mita P, Ha S, Logan SK. Role of the Unconventional Prefoldin Proteins URI and UXT in Transcription Regulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1106:85-94. [PMID: 30484154 DOI: 10.1007/978-3-030-00737-9_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The Unconventional prefoldin RPB5 interacting protein (URI), also known as RPB5-Mediating Protein (RMP) has been shown to play several regulatory roles in different cellular compartments including the mitochondria, as a phosphatase binding protein; in the cytoplasm, as a chaperone-like protein; and in the nucleus, as a transcriptional regulator through binding to RPB5 and RNA polymerase II (polII). This chapter focuses on the role URI plays in transcriptional regulation in the prostate cell. In prostate cells, URI is tightly bound to another prefoldin-like protein called UXT, a known androgen receptor (AR) cofactor. Part of a multiprotein complex, URI and UXT act as transcriptional repressors, and URI regulates KAP1 through PP2A phosphatase activity. The discovery of the interaction of URI and UXT with KAP1, AR, and PP2A, as well as the numerous interactions between URI and components of the R2TP/prefoldin-like complex, RPB5, and nuclear proteins involved in DNA damage response, chromatin remodeling and gene transcription, reveal a pleiotropic effect of the URI/UXT complex on nuclear processes. The mechanisms by which URI/UXT affect transcription, chromatin structure and regulation, and genome stability, remain to be elucidated but will be of fundamental importance considering the many processes affected by alterations of URI/UXT and other prefoldins and prefoldin-like proteins.
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Affiliation(s)
- Phillip A Thomas
- Departments of Urology, and Biochemistry and Molecular Biology, New York University School of Medicine, New York, NY, USA
| | - Paolo Mita
- Institute for Systems Genetics, New York University School of Medicine, New York, NY, USA
| | - Susan Ha
- Departments of Urology, and Biochemistry and Molecular Biology, New York University School of Medicine, New York, NY, USA
| | - Susan K Logan
- Departments of Urology, and Biochemistry and Molecular Biology, New York University School of Medicine, New York, NY, USA.
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18
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Gauthier MS, Cloutier P, Coulombe B. Role of the PAQosome in Regulating Arrangement of Protein Quaternary Structure in Health and Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1106:25-36. [PMID: 30484151 DOI: 10.1007/978-3-030-00737-9_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The PAQosome, formerly known as the R2TP/PFDL complex, is an eleven-subunit cochaperone complex that assists HSP90 in the assembly of numerous large multisubunit protein complexes involved in essential cellular functions such as protein synthesis, ribosome biogenesis, transcription, splicing, and others. In this review, we discuss possible mechanisms of action and role of phosphorylation in the assembly of client complexes by the PAQosome as well as its potential role in cancer, ciliogenesis and ciliopathies.
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Affiliation(s)
| | | | - Benoit Coulombe
- Institut de Recherches Cliniques de Montréal, QC, Canada. .,Department of Biochemistry and Molecular Medicine, Université de Montréal, QC, Canada.
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19
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Xu Z, Bian H, Zhang F, Mi R, Wang Q, Lu Y, Zheng Q, Gu J. URI promotes the migration and invasion of human cervical cancer cells potentially via upregulation of vimentin expression. Am J Transl Res 2017; 9:3037-3047. [PMID: 28670391 PMCID: PMC5489903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 05/19/2017] [Indexed: 06/07/2023]
Abstract
URI is known to act as an oncoprotein in several tumors. Our previous studies have shown that URI is associated with the migration process in cervical and gastric cancer cells, but the mechanisms remain to be determined. Given the fact that URI positively regulates vimentin expression, we therefore investigated how URI regulated vimentin expression affects the migration and invasion of cells from two human cervical cancer cell lines HeLa and C33A, which differentially express URI. We have shown that knock-down of URI in HeLa cells using URI siRNA caused decreased vimentin mRNA and protein levels along with attenuated cell motility. Meanwhile, overexpression of URI by transfection of PCMV6-URI in C33A cells resulted in increased vimentin expression and enhanced cell migration and invasion. We have also used TGF-β to induce vimentin expression, which enhanced the cell migration and invasion abilities affected by URI, while inhibition of vimentin by siRNA attenuated URI's effect on cell migration and invasion. In addition, we have performed luciferase reporter and ChIP assays, and the results support that URI indirectly enhances the activity of vimentin promoter. Taken together, our results suggest that URI plays essential roles in the migration and invasion of human cervical cancer cells, possibly via targeting vimentin expression.
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Affiliation(s)
- Zhonghai Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Huiqin Bian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Fei Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Rui Mi
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Qian Wang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Yaojuan Lu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Qiping Zheng
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Junxia Gu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Hematology and Hematological Laboratory Science, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
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20
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Cloutier P, Poitras C, Durand M, Hekmat O, Fiola-Masson É, Bouchard A, Faubert D, Chabot B, Coulombe B. R2TP/Prefoldin-like component RUVBL1/RUVBL2 directly interacts with ZNHIT2 to regulate assembly of U5 small nuclear ribonucleoprotein. Nat Commun 2017; 8:15615. [PMID: 28561026 PMCID: PMC5460035 DOI: 10.1038/ncomms15615] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 04/12/2017] [Indexed: 01/11/2023] Open
Abstract
The R2TP/Prefoldin-like (R2TP/PFDL) complex has emerged as a cochaperone complex involved in the assembly of a number of critical protein complexes including snoRNPs, nuclear RNA polymerases and PIKK-containing complexes. Here we report on the use of multiple target affinity purification coupled to mass spectrometry to identify two additional complexes that interact with R2TP/PFDL: the TSC1–TSC2 complex and the U5 small nuclear ribonucleoprotein (snRNP). The interaction between R2TP/PFDL and the U5 snRNP is mostly mediated by the previously uncharacterized factor ZNHIT2. A more general function for the zinc-finger HIT domain in binding RUVBL2 is exposed. Disruption of ZNHIT2 and RUVBL2 expression impacts the protein composition of the U5 snRNP suggesting a function for these proteins in promoting the assembly of the ribonucleoprotein. A possible implication of R2TP/PFDL as a major effector of stress-, energy- and nutrient-sensing pathways that regulate anabolic processes through the regulation of its chaperoning activity is discussed. The R2TP/Prefoldin-like cochaperone complex is involved in the assembly of a number of protein complexes. Here the authors provide evidence that RUVBL1/RUVBL2, subunits of that cochaperone complex, directly interact with ZNHIT2 to regulate assembly of U5 small ribonucleoprotein.
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Affiliation(s)
- Philippe Cloutier
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7
| | - Christian Poitras
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7
| | - Mathieu Durand
- Laboratory of Functional Genomics, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada J1E 4K8
| | - Omid Hekmat
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7
| | - Émilie Fiola-Masson
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7
| | - Annie Bouchard
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7
| | - Denis Faubert
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7
| | - Benoit Chabot
- Laboratory of Functional Genomics, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada J1E 4K8.,Département de Microbiologie et d'Infectiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada J1E 4K8
| | - Benoit Coulombe
- Translational Proteomics Laboratory, Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada H2W 1R7.,Département de Biochimie, Université de Montréal, Montreal, Quebec, Canada H3T 1J4
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21
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Kim J, Choi S, Saxena N, Singh AK, Singh I, Won JS. Regulation of STAT3 and NF-κB activations by S-nitrosylation in multiple myeloma. Free Radic Biol Med 2017; 106:245-253. [PMID: 28232202 PMCID: PMC5826580 DOI: 10.1016/j.freeradbiomed.2017.02.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 02/09/2017] [Accepted: 02/20/2017] [Indexed: 10/20/2022]
Abstract
Numerous reports suggest that aberrant activations of STAT3 and NF-κB promote survival and proliferation of multiple myeloma (MM) cells. In the present report, we demonstrate that a synthetic S-nitrosothiol compound, S-nitroso-N-acetylcysteine (SNAC), inhibits proliferation and survival of multiple MM cells via S-nitrosylation-dependent inhibition of STAT3 and NF-κB. In human MM cells (e.g. U266, H929, and IM-9 cells), SNAC treatment increased S-nitrosylation of STAT3 and NF-κB and inhibited their activities. Consequently, SNAC treatment resulted in MM cell cycle arrest at G1/S check point and inhibited their proliferation. SNAC also decreased the expression of cell survival factors and increased the activities of caspases, thus increased sensitivity of MM cells to melphalan, a chemotherapeutic agent for MM. In U266 xenografted mice, SNAC treatment decreased the activity of STAT3 and reduced the growth of human CD138 positive cells (U266 cells) in the bone marrow and also reduced their production of human IgE into the serum. Taken together, these data document the S-nitrosylation mediated inhibition of MM cell proliferation and cell survival via inhibition of STAT3 and NF-κB pathways and its efficacy in animal model of MM.
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Affiliation(s)
- Jinsu Kim
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Seungho Choi
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Nishant Saxena
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Avtar K Singh
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, United States; Pathology and Laboratory Medicine Service, Ralph H. Johnson Veterans Administration Medical Center, Charleston, SC 29401, United States
| | - Inderjit Singh
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States.
| | - Je-Seong Won
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, United States.
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22
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Luo D, Xu Z, Hu X, Zhang F, Bian H, Li N, Wang Q, Lu Y, Zheng Q, Gu J. URI prevents potassium dichromate-induced oxidative stress and cell death in gastric cancer cells. Am J Transl Res 2016; 8:5399-5409. [PMID: 28078011 PMCID: PMC5209491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 04/21/2016] [Indexed: 06/06/2023]
Abstract
Chromium VI can provoke oxidative stress, DNA damage, cytotoxicity, mutagenesis and carcinogenesis. Aberrantly high level of reactive oxygen species (ROS) has been associated with oxidative stress and subsequent DNA damage. Notably, multiple previous studies have shown the increased level of ROS in chromium (VI) induced oxidative stress, but its effect on cell death and the underlying mechanism remain to be determined. In this study, we aimed to investigate the role of URI, an unconventional prefoldin RBP5 interactor, in potassium dichromate induced oxidative stress and cell death through in vitro loss-of-function studies. We have shown that knockdown of URI in human gastric cancer SGC-7901 cells by URI siRNA enhanced potassium dichromate-induced production of ROS. The level of rH2AX, a marker of DNA damage, was significantly increased, along with a reduced cell viability in URI siRNA treated cells that were also exposed to potassium dichromate. Comet assay showed that URI knockdown increased the tail moment in potassium dichromate-treated SGC-7901 cells. Accordingly, the cell rates of apoptosis and necrosis were also increased in URI knockdown cells treated with potassium dichromate at different concentrations. Together, these results suggest that URI is preventive for the oxidative stress and cell death induced by potassium dichromate, which potentially leads to cancer cell survival and therapeutic resistance.
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Affiliation(s)
- Dongwei Luo
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Zhonghai Xu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Xiaoxia Hu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Fei Zhang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Huiqin Bian
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Na Li
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Qian Wang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Yaojuan Lu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Qiping Zheng
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Junxia Gu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
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23
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Song C, Peng W, Yin S, Zhao J, Fu B, Zhang J, Mao T, Wu H, Zhang Y. Melatonin improves age-induced fertility decline and attenuates ovarian mitochondrial oxidative stress in mice. Sci Rep 2016; 6:35165. [PMID: 27731402 PMCID: PMC5059725 DOI: 10.1038/srep35165] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 09/26/2016] [Indexed: 12/21/2022] Open
Abstract
Increasing evidence shows that melatonin protected against age-related mitochondrial oxidative damage. However, the protective effects of melatonin against ovarian aging has not been explored. Young Kunming females (aged 2–3 months) were fed with melatonin added to drinking water for 6 or 12 months (mo). We found that long-term (12 mo) melatonin treatment significantly reduced ovarian aging, as indicated by substantial increases in litter size, pool of follicles, and telomere length as well as oocyte quantity and quality. Melatonin treatment suppressed ovarian mitochondrial oxidative damage by decreasing mitochondrial reactive oxygen species (mROS) generation, inhibiting apoptosis, repressing collapse of mitochondrial membrane potential and preserving respiratory chain complex activities. Female mice fed with melatonin had enhanced mitochondrial antioxidant activities, thus reducing the risk of mitochondrial oxidative damage cause by free radicals. Notably, melatonin treatment enhanced SIRT3 activity but not the protein expression level, and increased the binding affinity of FoxO3a to the promoters of both superoxide dismutase 2 (SOD2) and catalase (CAT). In conclusion, melatonin exerted protection against aging-induced fertility decline and maintenance of mitochondrial redox balance.
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Affiliation(s)
- Chao Song
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wei Peng
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Songna Yin
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jiamin Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Beibei Fu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jingcheng Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Tingchao Mao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Haibo Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, China
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24
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Hu X, Zhang F, Luo D, Li N, Wang Q, Xu Z, Bian H, Liang Y, Lu Y, Zheng Q, Gu J. URI promotes gastric cancer cell motility, survival, and resistance to adriamycin in vitro. Am J Cancer Res 2016; 6:1420-1430. [PMID: 27429854 PMCID: PMC4937743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 03/08/2016] [Indexed: 06/06/2023] Open
Abstract
Unconventional prefoldin RPB5 interactor (URI), a RNA polymerase II Subunit 5-Interacting protein, is known to participate in the regulation of nutrient-sensitive mTOR-dependent transcription programs. Multiple studies have recently demonstrated that URI functions as an oncoprotein, possibly through the mTOR pathway, and regulates tumor cell motility, invasion, and metastasis. However, whether and how URI plays a role in gastric oncogenesis has not been elucidated. Due to drug resistance, recurrence and metastasis, the prognosis of gastric cancer remains poor. This study aims to explore the effects of URI on gastric cancer cells by focusing on their migratory ability and resistance to adriamycin. URI was over-expressed or knocked-down in MGC-803 and HGC-27 gastric cancer cells using URI plasmid or siRNA transfection approach. The cell viability, apoptosis, and migration ability were then examined by the CCK-8 assay, flow cytometer Annexin V/PI staining, and the Transwell cell migration assay respectively. The protein levels of apoptosis and EMT related genes were detected by western blot. The results showed that overexpression of URI promoted while knock-down of URI inhibited gastric cancer cell proliferation. URI overexpression resulted in increased Bcl-2 expression but decreased levels of Bax, cleaved PARP-1 and cleaved caspase-3. Conversely, cells treated with URI siRNA showed increased adriamycin induced apoptosis, along with reduced Bcl-2, but increased Bax, cleaved PARP-1 and cleaved caspase-3 expression. We have also shown that overexpression of URI enhanced cancer cell proliferation and migration with higher levels of Snail and Vimentin, whereas knockdown of URI in MGC-803 and HGC-27 cells inhibited proliferation and migration with decreased Snail and Vimentin expression. Together, our results support that URI promotes cell survival and mobility and acts as a chemotherapeutics resistant protein in MGC-803 and HGC-27 cells. URI might be a potential biomarker for gastric cancer diagnostics and prognostics.
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Affiliation(s)
- Xiaoxia Hu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Fei Zhang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Dongwei Luo
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Na Li
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Qian Wang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Zhonghai Xu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Huiqin Bian
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Yuting Liang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Yaojuan Lu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Qiping Zheng
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
| | - Junxia Gu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University Zhenjiang 212013, China
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25
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Lipinski KA, Britschgi C, Schrader K, Christinat Y, Frischknecht L, Krek W. Colorectal cancer cells display chaperone dependency for the unconventional prefoldin URI1. Oncotarget 2016; 7:29635-47. [PMID: 27105489 PMCID: PMC5045422 DOI: 10.18632/oncotarget.8816] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 03/28/2016] [Indexed: 01/12/2023] Open
Abstract
Chaperone dependency of cancer cells is an emerging trait that relates to the need of transformed cells to cope with the various stresses associated with the malignant state. URI1 (unconventional prefoldin RPB5 interactor 1) encodes a member of the prefoldin (PFD) family of molecular chaperones that acts as part of a heterohexameric PFD complex, the URI1 complex (URI1C), to promote assembly of multiprotein complexes involved in cell signaling and transcription processes. Here, we report that human colorectal cancer (CRCs) cell lines demonstrate differential dependency on URI1 and on the URI1 partner PFD STAP1 for survival, suggesting that this differential vulnerability of CRC cells is directly linked to URI1C chaperone function. Interestingly, in URI1-dependent CRC cells, URI1 deficiency is associated with non-genotoxic p53 activation and p53-dependent apoptosis. URI1-independent CRC cells do not exhibit such effects even in the context of wildtype p53. Lastly, in tumor xenografts, the conditional depletion of URI1 in URI1-dependent CRC cells was, after tumor establishment, associated with severe inhibition of subsequent tumor growth and activation of p53 target genes. Thus, a subset of CRC cells has acquired a dependency on the URI1 chaperone system for survival, providing an example of 'non-oncogene addiction' and vulnerability for therapeutic targeting.
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Affiliation(s)
| | - Christian Britschgi
- Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Karen Schrader
- Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Yann Christinat
- Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Lukas Frischknecht
- Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Wilhelm Krek
- Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland
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26
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Wu W, Ma D, Wang P, Cao L, Lu T, Fang Q, Zhao J, Wang J. Potential crosstalk of the interleukin-6-heme oxygenase-1-dependent mechanism involved in resistance to lenalidomide in multiple myeloma cells. FEBS J 2016; 283:834-49. [PMID: 26700310 DOI: 10.1111/febs.13633] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 12/06/2015] [Accepted: 12/17/2015] [Indexed: 01/09/2023]
Affiliation(s)
- Weibing Wu
- Department of Hematology; Affiliated Hospital of Guizhou Medical University; Guiyang China
- Key Laboratory of Hematological Disease Diagnostic & Treat Centre of GuiZhou Province; Guiyang China
- GuiZhou Province Hematopoietic Stem Cell Transplantation Center; Affiliated Hospital of Guizhou Medical University; Guiyang China
| | - Dan Ma
- Department of Hematology; Affiliated Hospital of Guizhou Medical University; Guiyang China
- Department of Pharmacy; Affiliated BaiYun Hospital of Guizhou Medical University; China
| | - Ping Wang
- Department of Hematology; Affiliated Hospital of Guizhou Medical University; Guiyang China
- Key Laboratory of Hematological Disease Diagnostic & Treat Centre of GuiZhou Province; Guiyang China
- GuiZhou Province Hematopoietic Stem Cell Transplantation Center; Affiliated Hospital of Guizhou Medical University; Guiyang China
| | - Lu Cao
- School of Pharmacy; Guizhou Medical University; Guiyang China
| | - Tangsheng Lu
- School of Pharmacy; Guizhou Medical University; Guiyang China
| | - Qin Fang
- Department of Hematology; Affiliated Hospital of Guizhou Medical University; Guiyang China
- Department of Pharmacy; Affiliated BaiYun Hospital of Guizhou Medical University; China
- Department of Pharmacy; Affiliated Hospital of Guizhou Medical University; Guiyang China
| | - Jiangyuan Zhao
- Department of Hematology; Affiliated Hospital of Guizhou Medical University; Guiyang China
- Key Laboratory of Hematological Disease Diagnostic & Treat Centre of GuiZhou Province; Guiyang China
- GuiZhou Province Hematopoietic Stem Cell Transplantation Center; Affiliated Hospital of Guizhou Medical University; Guiyang China
| | - Jishi Wang
- Department of Hematology; Affiliated Hospital of Guizhou Medical University; Guiyang China
- Key Laboratory of Hematological Disease Diagnostic & Treat Centre of GuiZhou Province; Guiyang China
- GuiZhou Province Hematopoietic Stem Cell Transplantation Center; Affiliated Hospital of Guizhou Medical University; Guiyang China
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27
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Gu J, Liang Y, Qiao L, Lu Y, Hu X, Luo D, Li N, Zhang L, Chen Y, Du J, Zheng Q. URI expression in cervical cancer cells is associated with higher invasion capacity and resistance to cisplatin. Am J Cancer Res 2015; 5:1353-1367. [PMID: 26101702 PMCID: PMC4473315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 03/06/2015] [Indexed: 06/04/2023] Open
Abstract
Cervical cancer is a common and devastating female cancer worldwide. The etiology of cervical cancer has been largely attributed to human papillomavirus (HPV) infection and activation of the P13K/AKT/mTOR (mammalian target of rapamycin) pathway. However, the limited HPV-directed therapy, as well as therapeutic approach targeting P13K/AKT/mTOR pathway, has not yet been established or effective. A deeper understanding of cervical carcinogenesis and finding of novel candidate molecules for cervical cancer therapeutics is largely warranted. The unconventional prefoldin RPB5 interactor (URI or URI1), a known transcription factor involving the TOR signaling pathway, has recently been implicated a role in multiple tumorigenesis. We recently reported significant upregulation of URI in precancerous cervical intra-epithelial neoplasia (CIN) and invasive cervical cancer, suggesting its role in cervical carcinogenesis. However, the effect and underlying mechanism of URI in cervical cancer development have never been elucidated. Here, we aimed to investigate the in vitro effect of URI on cervical cancer using two cervical cancer cell lines CaSki and C33A, which are HPV-positive and HPV-negative respectively. We have shown that forced over-expression of URI in C33A and CaSki cells markedly promoted cell growth, while down-regulation of URI mediated by siRNA inhibited cell proliferation. We have found that URI over-expression enhanced resistance of cervical cancer cells to cisplatin. In contrast, knockdown of URI promoted apoptosis by influencing cell response to cisplatin, supporting URI as an oncogenic protein for cervical cancer cells. We have also shown that URI promoted the migration and invasive capacity of cervical cancer cells by up-regulation of Vimentin, a mesenchymal cell migration marker relating to the epithelial-mesenchymal transition (EMT) program. Our data support an important function of URI in the biological behavior of cervical cancer cells and provide novel mechanistic insights into the role of URI in cervical cancer progression and possibly, metastasis.
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Affiliation(s)
- Junxia Gu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Yuting Liang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Longwei Qiao
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Yaojuan Lu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
- Department of Anatomy and Cell Biology, Rush University Medical CenterChicago, IL, 60612, USA
| | - Xiaoxia Hu
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Dongwei Luo
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Na Li
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Leilei Zhang
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Yiyang Chen
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Jialu Du
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
| | - Qiping Zheng
- Department of Hematology and Hematological Laboratory Science, Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu UniversityZhenjiang 212013, China
- Department of Anatomy and Cell Biology, Rush University Medical CenterChicago, IL, 60612, USA
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