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Busch M, Miroschnikov N, Dankert JT, Wiesehöfer M, Metz K, Stephan H, Dünker N. Impact of RARα and miR-138 on retinoblastoma etoposide resistance. Tumour Biol 2021; 43:11-26. [PMID: 33935126 DOI: 10.3233/tub-200072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Retinoblastoma (RB) is the most common childhood eye cancer. Chemotherapeutic drugs such as etoposide used in RB treatment often cause massive side effects and acquired drug resistances. Dysregulated genes and miRNAs have a large impact on cancer progression and development of chemotherapy resistances. OBJECTIVE This study was designed to investigate the involvement of retinoic acid receptor alpha (RARα) in RB progression and chemoresistance as well as the impact of miR-138, a potential RARα regulating miRNA. METHODS RARα and miR-138 expression in etoposide resistant RB cell lines and chemotherapy treated patient tumors compared to non-treated tumors was revealed by Real-Time PCR. Overexpression approaches were performed to analyze the effects of RARα on RB cell viability, apoptosis, proliferation and tumorigenesis. Besides, we addressed the effect of miR-138 overexpression on RB cell chemotherapy resistance. RESULTS A binding between miR-138 and RARα was shown by dual luciferase reporter gene assay. The study presented revealed that RARα is downregulated in etoposide resistant RB cells, while miR-138 is endogenously upregulated. Opposing RARα and miR-138 expression levels were detectable in chemotherapy pre-treated compared to non-treated RB tumor specimen. Overexpression of RARα increases apoptosis levels and reduces tumor cell growth of aggressive etoposide resistant RB cells in vitro and in vivo. Overexpression of miR-138 in chemo-sensitive RB cell lines partly enhances cell viability after etoposide treatment. CONCLUSIONS Our findings show that RARα acts as a tumor suppressor in retinoblastoma and is downregulated upon etoposide resistance in RB cells. Thus, RARα may contribute to the development and progression of RB chemo-resistance.
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Affiliation(s)
- Maike Busch
- Institute of Anatomy II, Department of Neuroanatomy, University of Duisburg-Essen, Medical Faculty, Essen, Germany
| | - Natalia Miroschnikov
- Institute of Anatomy II, Department of Neuroanatomy, University of Duisburg-Essen, Medical Faculty, Essen, Germany
| | | | - Marc Wiesehöfer
- Institute of Anatomy, University of Duisburg-Essen, Medical Faculty, Essen, Germany
| | - Klaus Metz
- Institute of Pathology, University of Duisburg-Essen, Medical Faculty, Essen, Germany
| | - Harald Stephan
- Division of Haematology and Oncology, Children's Hospital, University of Duisburg-Essen, Essen, Germany
| | - Nicole Dünker
- Institute of Anatomy II, Department of Neuroanatomy, University of Duisburg-Essen, Medical Faculty, Essen, Germany
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Wu J, Nagy LE, Liangpunsakul S, Wang L. Non-coding RNA crosstalk with nuclear receptors in liver disease. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166083. [PMID: 33497819 DOI: 10.1016/j.bbadis.2021.166083] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/28/2020] [Accepted: 01/16/2021] [Indexed: 02/06/2023]
Abstract
The dysregulation of nuclear receptors (NRs) underlies the pathogenesis of a variety of liver disorders. Non-coding RNAs (ncRNAs) are defined as RNA molecules transcribed from DNA but not translated into proteins. MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) are two types of ncRNAs that have been extensively studied for regulating gene expression during diverse cellular processes. NRs as therapeutic targets in liver disease have been exemplified by the successful application of their pharmacological ligands in clinics. MiRNA-based reagents or drugs are emerging as flagship products in clinical trials. Advancing our understanding of the crosstalk between NRs and ncRNAs is critical to the development of diagnostic and therapeutic strategies. This review summarizes recent findings on the reciprocal regulation between NRs and ncRNAs (mainly on miRNAs and lncRNAs) and their implication in liver pathophysiology, which might be informative to the translational medicine of targeting NRs and ncRNAs in liver disease.
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Affiliation(s)
- Jianguo Wu
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States of America; Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH, United States of America.
| | - Laura E Nagy
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States of America; Department of Gastroenterology and Hepatology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States of America; Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH, United States of America
| | - Suthat Liangpunsakul
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States of America; Roudebush Veterans Administration Medical Center, Indianapolis, IN, United States of America; Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, United States of America
| | - Li Wang
- Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT, United States of America
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Lin S, Kühn F, Schiergens TS, Zamyatnin AA, Isayev O, Gasimov E, Werner J, Li Y, Bazhin AV. Experimental postoperative ileus: is Th2 immune response involved? Int J Med Sci 2021; 18:3014-3025. [PMID: 34220330 PMCID: PMC8241774 DOI: 10.7150/ijms.59354] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/24/2021] [Indexed: 12/14/2022] Open
Abstract
Rationale: Postoperative ileus (POI) is a frequent complication arising after gastrointestinal surgery but pathogenesis of POI is still not fully understood. While Th1 immune cells are implicated in POI, the involvement of Th2 cells has not yet been clarified. Given the impact of reactive oxygen species (ROS) in the regulation of Th1 and Th2 balance, we hypothesized that not only Th1 but also Th2 immune response can be involved in the development of experimental POI. Methods: The intestinal transit test was performed using carbon gum arabic. Electron microscopy was employed to assess tissue morphology and the presence of immune cells. Cytokines, IgE and ROS were measured. Immune cells from Peyer's patches were analyzed by Flow Cytometry and toluidine blue staining was used for detection of mast cells. Transcriptional factors were analyzed by Western blot. Results: POI is associated with an increase in both Th2 cytokines and Th2 cells. We have further demonstrated that POI induces a Th2-dependent activation of memory and non-memory B cells. This was accompanied by an increase in a number of mast cells in the colon of POI mice as well by an increased IgE and histamine plasma levels. We found that POI-induced accumulation of ROS was associated with an increased expression of the transcriptional factors HMBGI, NF-κB, and p38. This increased expression seemed to be associated with a Th2 response. Conclusion: Th2 immune response can be involved in the activation of mast cells in POI, which was associated with ROS mediated activation of NF-κB and p38 MAPK signaling pathway.
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Affiliation(s)
- Sisi Lin
- Department of Pathophysiology, Institute of Digestive Disease, Tongji University School of Medicine, 200092, Shanghai, China.,Department of General, Visceral, and Transplantation Surgery, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Florian Kühn
- Department of General, Visceral, and Transplantation Surgery, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Tobias S Schiergens
- Department of General, Visceral, and Transplantation Surgery, University Hospital, LMU Munich, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, 81377 Munich, Germany
| | - Andrey A Zamyatnin
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991, Moscow, Russia.,Department of Cell Signaling, Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Orkhan Isayev
- Department of Histology, Embryology and Cytology, Azerbaijan Medical University, Baku, Azerbaijan
| | - Eldar Gasimov
- Department of Histology, Embryology and Cytology, Azerbaijan Medical University, Baku, Azerbaijan
| | - Jens Werner
- Department of General, Visceral, and Transplantation Surgery, University Hospital, LMU Munich, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, 81377 Munich, Germany
| | - Yongyu Li
- Department of Pathophysiology, Institute of Digestive Disease, Tongji University School of Medicine, 200092, Shanghai, China
| | - Alexandr V Bazhin
- Department of General, Visceral, and Transplantation Surgery, University Hospital, LMU Munich, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, 81377 Munich, Germany
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Wang L, Hu Z, Guo Q, Yang L, Pang Y, Wang W. MiR-23b functions as an oncogenic miRNA by downregulating Mcl-1S in lung cancer cell line A549. J Biochem Mol Toxicol 2020; 34:e22494. [PMID: 32281274 DOI: 10.1002/jbt.22494] [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: 10/14/2019] [Revised: 12/24/2019] [Accepted: 03/03/2020] [Indexed: 12/11/2022]
Abstract
It has been reported that microRNA-23b (miR-23b) plays a role in multiple cancers, while its impact on lung cancer has not been comprehensively known. Our study explored the probable impacts of miR-23b on lung cancer cells. Expression of miR-23b was assessed by reverse transcription quantitative polymerase chain reaction. After miR-23b mimic, inhibitor, and their own control were transfected into A549 cells, cell viability, migration, invasion, apoptosis, and epithelial-mesenchymal transition (EMT) were investigated through different experimental methods. The targeting contact between miR-23b and myeloid cell leukemia-1 (Mcl-1) was investigated applying dual-luciferase activity assay. In addition, the modulatory impacts of miR-23b on the splicing variants of Mcl-1 (Mcl-1S and Mcl-1L) were explored. MiR-23b was highly expressed in lung cancer cells compared with normal lung cells. Increased expression of miR-23b promoted A549 cell viability, migration, invasion, and EMT. However, miR-23b silencing produced the opposite results. Mcl-1 has been proven to be a specialized target of miR-23b. Compared with the reduction of Mcl-1S induced by miR-23b overexpression, Mcl-1L showed negligible interaction with miR-23b. Moreover, the antitumor activities of miR-23b silencing were alleviated by Mcl-1S silencing. The blockage of Janus kinase/signal transducer and activator of transcription protein (JAK/STAT) and Wnt/β-catenin induced by miR-23b silencing was reversed by Mcl-1S silencing. MiR-23b might be an up-and-coming biomarker of lung cancer. In addition, miR-23b was involved in the tumor-promoting effects and the mobilization of JAK/STAT and Wnt/β-catenin pathways through the reduction of Mcl-1S.
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Affiliation(s)
- Ling Wang
- Department of Clinical Laboratory, Henan Provincial Chest Hospital, Zhengzhou, China
| | - Zhiyi Hu
- Department of Clinical Laboratory, Henan Provincial Chest Hospital, Zhengzhou, China
| | - Qi Guo
- Department of Clinical Laboratory, Henan Provincial Chest Hospital, Zhengzhou, China
| | - Litao Yang
- Department of Clinical Laboratory, Henan Provincial Chest Hospital, Zhengzhou, China
| | - Yuling Pang
- Department of Clinical Laboratory, Henan Provincial Chest Hospital, Zhengzhou, China
| | - Wei Wang
- Department of Clinical Laboratory, Henan Provincial Chest Hospital, Zhengzhou, China
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Bösch F, Bazhin AV, Heublein S, Brüwer K, Knösel T, Reiter FP, Auernhammer CJ, Guba MO, Spitzweg C, Werner J, Angele MK. Treatment with somatostatin analogs induces differentially expressed let-7c-5p and mir-3137 in small intestine neuroendocrine tumors. BMC Cancer 2019; 19:575. [PMID: 31196127 PMCID: PMC6567424 DOI: 10.1186/s12885-019-5794-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 06/05/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Distant metastases frequently occur in gastroenteropancreatic neuroendocrine tumors. If hepatic surgery is not feasible, patients are treated with somatostatin analogs. However, the underlying mechanisms of action of this treatment remain to be defined. The aim of the present study was to analyze the micro-RNA expression profile inter-individually before and after the treatment with somatostatin analogs. MATERIAL AND METHODS Tumor specimens of all included patients (n = 8) before and after the onset of a therapy with somatostatin analogs were analyzed and a micro-RNA expression profile (754 micro-RNAs) of each probe was generated. This analysis in an intra-individual setting was selected to avoid bias from inter-individual differences. The micro-RNA expression profiles were validated by qPCR. Patients with any other systemic treatment were excluded from the present study. RESULTS Eight patients were included in the present study of which all had neuroendocrine tumors of the small intestine with diffuse hepatic metastases. Grouped analyses revealed that 15 micro-RNAs were differentially expressed (3 up- and 12 downregulated) after the exposure to somatostatin analogs. Additionally, let-7c-5p and mir-3137 are concordantly regulated in the inter-individually analysis. CONCLUSIONS This is the first study analyzing the individual micro-RNA expression profile before and after a therapy with somatostatin analogs. Data from this study reveal that somatostatin analogs may in part exert their beneficial effects through an alteration in the micro-RNA expression profile.
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Affiliation(s)
- Florian Bösch
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377, Munich, Germany.
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany.
| | - Alexandr V Bazhin
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sabine Heublein
- Department of Obstetrics and Gynecology, Heidelberg University Hospital, Heidelberg, Germany
| | - Katharina Brüwer
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Thomas Knösel
- Institute of Pathology, Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Florian P Reiter
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christoph J Auernhammer
- Department of Internal Medicine 4, Ludwig-Maximilians-University Munich, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Markus O Guba
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christine Spitzweg
- Department of Internal Medicine 4, Ludwig-Maximilians-University Munich, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Jens Werner
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Martin K Angele
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System, Ludwig-Maximilians-University Munich, Munich, Germany
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Zhang L, Xu J, Yang G, Li H, Guo X. miR-202 Inhibits Cell Proliferation, Migration, and Invasion by Targeting Epidermal Growth Factor Receptor in Human Bladder Cancer. Oncol Res 2018; 26:949-957. [PMID: 29298735 PMCID: PMC7844602 DOI: 10.3727/096504018x15149787144385] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Recent studies have demonstrated that miR-202 is associated with several types of cancer; however, the expression and function of miR-202 have not been investigated in bladder cancer. We analyzed the expression of miR-202 in bladder cancer tissues and adjacent noncancerous tissues. The effect of miR-202 on the proliferation, migration, and invasion was evaluated by in vitro assays. The target gene of miR-202 was assessed by luciferase reporter assay. In this study, miR-202 was found to be significantly downregulated in bladder cancer cell lines and tissues and was highly correlated with the T classification, N classification, grade, and recurrence. Ectopic expression of miR-202 suppressed cell viability, colony formation, cell migration, and invasion in vitro and inhibited xenograft tumor growth in vivo. Inversely, downregulation of miR-202 had contradictory effects. The 3′-untranslated region (3′-UTR) of epidermal growth factor receptor (EGFR) was identified as a direct target of miR-202 using luciferase reporter assays, and knockdown of EGFR enhanced miR-202-inhibited cell proliferation, migration, and invasion. In conclusion, miR-202 suppresses bladder cancer carcinogenesis and progression by targeting EGFR, thereby representing a potential target for miRNA-based therapy for bladder cancer in the future.
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Affiliation(s)
- Liqing Zhang
- Department of Urology Surgery, General Hospital of Jinan Military Command, Jinan, Shandong, P.R. China
| | - Jianjiang Xu
- Department of Pharmacy, General Hospital of Jinan Military Command, Jinan, Shandong, P.R. China
| | - Gaodi Yang
- Department of Urology Surgery, General Hospital of Jinan Military Command, Jinan, Shandong, P.R. China
| | - Heng Li
- Department of Medicine, School of Life Science, Jinan University, Jinan, Shandong, P.R. China
| | - Xiuxia Guo
- Department of Gynecology, General Hospital of Jinan Military Command, Jinan, Shandong, P.R. China
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