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Deng W, Fu J, Lin S, Wen Q, Fu L, Chen X. Hsa_circRNA_101036 aggravates hypoxic-induced endoplasmic reticulum stress via the miR-21-3p/TMTC1 axis in oral squamous cell carcinoma. Heliyon 2024; 10:e32969. [PMID: 38994041 PMCID: PMC11238011 DOI: 10.1016/j.heliyon.2024.e32969] [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: 07/25/2023] [Revised: 06/12/2024] [Accepted: 06/12/2024] [Indexed: 07/13/2024] Open
Abstract
Objective Circular RNAs (circRNAs) have been identified as potential biomarkers and therapeutic targets for various types of cancer, including Oral squamous cell carcinoma (OSCC). Hsa_circRNA_101036 was found to function as a cancer suppressor gene in OSCC; however, the underlying regulatory mechanism remains unclear. We investigated the role of hsa_circRNA_101036 in OSCC development and progression and explored its potential as a therapeutic target. Methods We performed a bioinformatics analysis and used experimental approaches to investigate the regulatory mechanism of hsa_circRNA_101036. The database StarBase v.2.0 was used to predict potential target-miRNAs of hsa_circRNA_101036. The levels of hsa_circRNA_101036, miR-21-3p, and TMTC2 expression in samples of OSCC cancer tissue (n = 15) and adjacent tissue (n = 15) were determined. We also examined the effects of hsa_circRNA_101036 overexpression on OSCC cell lines by using cell viability, migration, and invasion assays. The proportions of apoptotic cells and the reactive oxygen species (ROS) levels were analyzed by flow cytometry. We also investigated how hsa_circRNA_101036 overexpression affected the levels of miR-21-3p and TMTC2, and endoplasmic reticulum (ER) stress in OSCC cells. Results The levels of hsa_circRNA_101036 and TMTC2 expression were significantly lower, while miR-21-3p expression was higher in tumor tissues and OSCC cells when compared to adjacent tissues and normal oral fibroblasts, respectively. The levels of HIF-1α and miR-21-3p expression were significantly increased under conditions of hypoxia, while the levels of hsa_circRNA_101036 and TMTC2 were decreased. The expression levels of proteins associated with ER stress, the proportions of apoptotic cells, and the levels of ROS were all increased by hypoxia stimulation. In addition, overexpression of hsa_circRNA_101036, but not mutant hsa_circRNA_101036, was found to enhance the effect of hypoxia on HSC3 and OECM-1 cells. Hsa_circRNA_101036 overexpression suppressed tumor growth and induced ER stress. Finally, knockdown of miR-21-3p had the same effect as overexpression of hsa_circRNA_101036. Conclusion Our findings suggest that hsa_circRNA_101036 plays a critical role in the development and progression of OSCC. Overexpression of hsa_circRNA_101036 aggravated ER stress, and increased cell apoptosis and ROS production in OSCC under hypoxic conditions. Hsa_circRNA_101036 up-regulated TMTC2 expression by sponging miR-21-3p in OSCC.
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Affiliation(s)
- Wei Deng
- Department of Oral and Maxillofacial Surgery, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Juan Fu
- Department of Infectious Diseases, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Shigeng Lin
- Department of Oral and Maxillofacial Surgery, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Qitao Wen
- Department of Oral and Maxillofacial Surgery, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Liangbin Fu
- Department of Oral and Maxillofacial Surgery, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Xiaoze Chen
- Department of Oral and Maxillofacial Surgery, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
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Karamali N, Daraei A, Rostamlou A, Mahdavi R, Akbari Jonoush Z, Ghadiri N, Mahmoudi Z, Mardi A, Javidan M, Sohrabi S, Baradaran B. Decoding contextual crosstalk: revealing distinct interactions between non-coding RNAs and unfolded protein response in breast cancer. Cancer Cell Int 2024; 24:104. [PMID: 38468244 PMCID: PMC10926595 DOI: 10.1186/s12935-024-03296-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 03/06/2024] [Indexed: 03/13/2024] Open
Abstract
Breast cancer is significantly influenced by endoplasmic reticulum (ER) stress, impacting both its initiation and progression. When cells experience an accumulation of misfolded or unfolded proteins, they activate the unfolded protein response (UPR) to restore cellular balance. In breast cancer, the UPR is frequently triggered due to challenging conditions within tumors. The UPR has a dual impact on breast cancer. On one hand, it can contribute to tumor growth by enhancing cell survival and resistance to programmed cell death in unfavorable environments. On the other hand, prolonged and severe ER stress can trigger cell death mechanisms, limiting tumor progression. Furthermore, ER stress has been linked to the regulation of non-coding RNAs (ncRNAs) in breast cancer cells. These ncRNAs, including microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), play essential roles in cancer development by influencing gene expression and cellular processes. An improved understanding of how ER stress and ncRNAs interact in breast cancer can potentially lead to new treatment approaches. Modifying specific ncRNAs involved in the ER stress response might interfere with cancer cell survival and induce cell death. Additionally, focusing on UPR-associated proteins that interact with ncRNAs could offer novel therapeutic possibilities. Therefore, this review provides a concise overview of the interconnection between ER stress and ncRNAs in breast cancer, elucidating the nuanced effects of the UPR on cell fate and emphasizing the regulatory roles of ncRNAs in breast cancer progression.
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Affiliation(s)
- Negin Karamali
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Arshia Daraei
- Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Arman Rostamlou
- Department of Medical Biology, School of Medicine, University of EGE, Bornova, Izmir, Turkey
| | - Roya Mahdavi
- Student Research Committee, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Zahra Akbari Jonoush
- Student Research Committee, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nooshin Ghadiri
- Student Research Committee, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Zahra Mahmoudi
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amirhossein Mardi
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Moslem Javidan
- Student Research Committee, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Sepideh Sohrabi
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Ma X, Xu M, Zhang X, Wang X, Su K, Xu Z, Wang X, Yang Y. Gambogenic acid inhibits proliferation and ferroptosis by targeting the miR-1291/FOXA2 and AMPKα/SLC7A11/GPX4 axis in colorectal cancer. Cell Biol Int 2023; 47:1813-1824. [PMID: 37471707 DOI: 10.1002/cbin.12072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/26/2023] [Accepted: 07/09/2023] [Indexed: 07/22/2023]
Abstract
The present study aims to investigate the mechanism of the nature compound gambogenic acid (GNA) on the apoptosis and ferroptosis in colorectal cancer (CRC). The effect of GNA on the proliferation of CRC cell lines were detected by MTT and clonogenic assay. The xenograft tumor model was established, and the inhibition effect of GNA were evaluated by observing the tumor growth. The endoplasmic reticulum (ER) of HCT116 was observed by using the ER tracker. The TargrtScan database was used to predict the miRNA binding sites. The level of miRNA with GNA treatment was explored by real-time quantitative PCR. The effect of ferroptosis were evaluated by detect the expression of reactive oxygen species (ROS), intracellular ferrous iron (Fe2+ ), malondialdehyde (MDA), glutathione (GSH), subunit solute carrier family 7 member 11 (SLC7A11), glutathione peroxidase (GPX)4, transferrin, and ferritin by Western blot. GNA isolated from gamboge can inhibit the growth and proliferation of CRC cell lines in a concentration-dependent manner. GNA activated ER stress by upregulating miR-1291, and miR-1291 targeted the forkhead box protein A2 (FOXA2). GNA also induced ROS production and mediated the Fenton reaction by activating transferrin to increase Fe2+ , thus inducing ferroptosis. In addition, GNA could induce ferroptosis through the depletion of GSH and GPX4. Furthermore, GNA treatment regulated iron metabolism by activating AMPKα/SLC7A11/GPX4 signaling. In conclusion, GNA activated ER stress via miR-1291 and induced ferroptosis in CRC cells and might be a new inducer of ferroptosis, which can expand the efficacy of chemotherapy drugs.
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Affiliation(s)
- Xiaoqi Ma
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Midie Xu
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China
- Department of Medical Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- Institute of Pathology, Fudan University, Shanghai, P.R. China
| | - Xing Zhang
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Xin Wang
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China
| | - Kexin Su
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Zihang Xu
- School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Xiaoyu Wang
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Yifu Yang
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
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Shreya S, Grosset CF, Jain BP. Unfolded Protein Response Signaling in Liver Disorders: A 2023 Updated Review. Int J Mol Sci 2023; 24:14066. [PMID: 37762367 PMCID: PMC10531763 DOI: 10.3390/ijms241814066] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/04/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Endoplasmic reticulum (ER) is the site for synthesis and folding of secreted and transmembrane proteins. Disturbance in the functioning of ER leads to the accumulation of unfolded and misfolded proteins, which finally activate the unfolded protein response (UPR) signaling. The three branches of UPR-IRE1 (Inositol requiring enzyme 1), PERK (Protein kinase RNA-activated (PKR)-like ER kinase), and ATF6 (Activating transcription factor 6)-modulate the gene expression pattern through increased expression of chaperones and restore ER homeostasis by enhancing ER protein folding capacity. The liver is a central organ which performs a variety of functions which help in maintaining the overall well-being of our body. The liver plays many roles in cellular physiology, blood homeostasis, and detoxification, and is the main site at which protein synthesis occurs. Disturbance in ER homeostasis is triggered by calcium level imbalance, change in redox status, viral infection, and so on. ER dysfunction and subsequent UPR signaling participate in various hepatic disorders like metabolic (dysfunction) associated fatty liver disease, liver cancer, viral hepatitis, and cholestasis. The exact role of ER stress and UPR signaling in various liver diseases is not fully understood and needs further investigation. Targeting UPR signaling with drugs is the subject of intensive research for therapeutic use in liver diseases. The present review summarizes the role of UPR signaling in liver disorders and describes why UPR regulators are promising therapeutic targets.
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Affiliation(s)
- Smriti Shreya
- Gene Expression and Signaling Lab, Department of Zoology, Mahatma Gandhi Central University, Motihari 845401, Bihar, India;
| | - Christophe F. Grosset
- MIRCADE Team, U1312, Bordeaux Institute in Oncology, BRIC, Université de Bordeaux, 146 Rue Léo Saignat, F-33000 Bordeaux, France
| | - Buddhi Prakash Jain
- Gene Expression and Signaling Lab, Department of Zoology, Mahatma Gandhi Central University, Motihari 845401, Bihar, India;
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Shiau JP, Chuang YT, Yen CY, Chang FR, Yang KH, Hou MF, Tang JY, Chang HW. Modulation of AKT Pathway-Targeting miRNAs for Cancer Cell Treatment with Natural Products. Int J Mol Sci 2023; 24:ijms24043688. [PMID: 36835100 PMCID: PMC9961959 DOI: 10.3390/ijms24043688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Many miRNAs are known to target the AKT serine-threonine kinase (AKT) pathway, which is critical for the regulation of several cell functions in cancer cell development. Many natural products exhibiting anticancer effects have been reported, but their connections to the AKT pathway (AKT and its effectors) and miRNAs have rarely been investigated. This review aimed to demarcate the relationship between miRNAs and the AKT pathway during the regulation of cancer cell functions by natural products. Identifying the connections between miRNAs and the AKT pathway and between miRNAs and natural products made it possible to establish an miRNA/AKT/natural product axis to facilitate a better understanding of their anticancer mechanisms. Moreover, the miRNA database (miRDB) was used to retrieve more AKT pathway-related target candidates for miRNAs. By evaluating the reported facts, the cell functions of these database-generated candidates were connected to natural products. Therefore, this review provides a comprehensive overview of the natural product/miRNA/AKT pathway in the modulation of cancer cell development.
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Affiliation(s)
- Jun-Ping Shiau
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ya-Ting Chuang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ching-Yu Yen
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan
- Department of Oral and Maxillofacial Surgery, Chi-Mei Medical Center, Tainan 71004, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Kun-Han Yang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ming-Feng Hou
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jen-Yang Tang
- School of Post-Baccalaureate Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (J.-Y.T.); (H.-W.C.); Tel.: +88-67-3121101 (ext. 8105) (J.-Y.T.); +88-67-3121101 (ext. 2691) (H.-W.C.)
| | - Hsueh-Wei Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (J.-Y.T.); (H.-W.C.); Tel.: +88-67-3121101 (ext. 8105) (J.-Y.T.); +88-67-3121101 (ext. 2691) (H.-W.C.)
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Wang J, Yokoyama Y, Hirose H, Shimomura Y, Bonkobara S, Itakura H, Kouda S, Morimoto Y, Minami K, Takahashi H, Shibata S, Kobayashi S, Uemura M, Tanaka S, Wu X, Tanaka S, Mori M, Yamamoto H. Functional assessment of miR‑1291 in colon cancer cells. Int J Oncol 2022; 60:13. [PMID: 34981812 PMCID: PMC8759348 DOI: 10.3892/ijo.2022.5303] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 12/06/2021] [Indexed: 12/13/2022] Open
Abstract
miR‑1291 exerts an anti‑tumor effect in a subset of human carcinomas, including pancreatic cancer. However, its role in colorectal cancer (CRC) is largely unknown. In the present study, the expression and effect of miR‑1291 in CRC cells was investigated. It was identified that miR‑1291 significantly suppressed the proliferation, invasion, cell mobility and colony formation of CRC cells. Additionally, miR‑1291 induced cell apoptosis. A luciferase reporter assay revealed that miR‑1291 directly bound the 3'‑untranslated region sequence of doublecortin‑like kinase 1 (DCLK1). miR‑1291 also suppressed DCLK1 mRNA and protein expression in HCT116 cells that expressed DCLK1. Furthermore, miR‑1291 suppressed cancer stem cell markers BMI1 and CD133, and inhibited sphere formation. The inhibitory effects on sphere formation, invasion and mobility in HCT116 cells were also explored and verified using DCLK1 siRNAs. Furthermore, miR‑1291 induced CDK inhibitors p21WAF1/CIP1 and p27KIP1 in three CRC cell lines, and the overexpression of DCLK1 in HCT116 cells led to a decrease of p21WAF1/CIP1 and p27KIP1. Intravenous administration of miR‑1291 loaded on the super carbonate apatite delivery system significantly inhibited tumor growth in the DLD‑1 xenograft mouse model. Additionally, the resultant tumors exhibited significant upregulation of the p21WAF1/CIP1 and p27KIP1 protein with treatment of miR‑1291. Taken together, the results indicated that miR‑1291 served an anti‑tumor effect by modulating multiple functions, including cancer stemness and cell cycle regulation. The current data suggested that miR‑1291 may be a promising nucleic acid medicine against CRC.
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Affiliation(s)
- Jiaqi Wang
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuhki Yokoyama
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Haruka Hirose
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuki Shimomura
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Saki Bonkobara
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroaki Itakura
- Department of Surgery and Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shihori Kouda
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yoshihiro Morimoto
- Department of Surgery and Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kazumasa Minami
- Department of Radiation Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hidekazu Takahashi
- Department of Surgery and Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Satoshi Shibata
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shogo Kobayashi
- Department of Surgery and Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Mamoru Uemura
- Department of Surgery and Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Susumu Tanaka
- First Department of Oral and Maxillofacial Surgery, Graduate School of Dentistry, Osaka University, Suita, Osaka 565-0871, Japan
| | - Xin Wu
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shinji Tanaka
- Department of Molecular Oncology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
- Department of Hepato-Billiary-Pancreatic Surgery, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Masaki Mori
- Tokai University, Graduate School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Hirofumi Yamamoto
- Department of Molecular Pathology, Division of Health Sciences, Osaka University, Suita, Osaka 565-0871, Japan
- Department of Surgery and Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
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Liu X, Guo X, Zhou H. Octreotide acetate combined with somatostatin upregulates miR-1291 and downregulates miR-331-3p in patients with cirrhosis and upper gastrointestinal bleeding. Am J Transl Res 2021; 13:9883-9891. [PMID: 34540125 PMCID: PMC8430138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 05/11/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE This study aimed to explore the efficacy of octreotide acetate combined with somatostatin (OA + SS) for the treatment of patients with cirrhosis and upper gastrointestinal bleeding (UGIB). METHODS A total of 118 patients with cirrhosis and UGIB in our hospital were enrolled from June 2018 to September 2019. Fifty-seven were treated with OA alone (Group A) whereas 61 were treated with OA + SS (Group B). RESULTS The therapeutic effects, inflammatory cytokines, liver function indices, and relative expression levels of miR-1291 and miR-331-3p were then observed. Compared with the patients in Group A, those in Group B had lower post-treatment inflammatory cytokine levels (P < 0.05), better post-treatment liver function indices (P < 0.05), lower incidences of adverse reactions (P < 0.05), and a higher total effective rate (P < 0.05). The OA + SS treatment group had upregulated miR-1291 and downregulated miR-331-3p (P < 0.05). CONCLUSION OA + SS therapy is safe and effective for the treatment of patients with cirrhosis and UGIB.
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Affiliation(s)
- Xiaodong Liu
- Department of Gastroenterology, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei, China
| | - Xiaohui Guo
- Department of Gastroenterology, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei, China
| | - Hu Zhou
- Department of Function, HanDan Central HospitalHandan 056001, Hebei, China
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Unfolded protein response during cardiovascular disorders: a tilt towards pro-survival and cellular homeostasis. Mol Cell Biochem 2021; 476:4061-4080. [PMID: 34259975 DOI: 10.1007/s11010-021-04223-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/08/2021] [Indexed: 12/13/2022]
Abstract
The endoplasmic reticulum (ER) is an organelle that orchestrates the production and proper assembly of an extensive types of secretory and membrane proteins. Endoplasmic reticulum stress is conventionally related to prolonged disruption in the protein folding machinery resulting in the accumulation of unfolded proteins in the ER. This disruption is often manifested due to oxidative stress, Ca2+ leakage, iron imbalance, disease conditions which in turn hampers the cellular homeostasis and induces cellular apoptosis. A mild ER stress is often reverted back to normal. However, cells retaliate to acute ER stress by activating the unfolded protein response (UPR) which comprises three signaling pathways, Activating transcription factor 6 (ATF6), inositol requiring enzyme 1 alpha (IRE1α), and protein kinase RNA-activated-like ER kinase (PERK). The UPR response participates in both protective and pro-apoptotic responses and not much is known about the mechanistic aspects of the switch from pro-survival to pro-apoptosis. When ER stress outpaces UPR response then cell apoptosis prevails which often leads to the development of various diseases including cardiomyopathies. Therefore, it is important to identify molecules that modulate the UPR that may serve as promising tools towards effective treatment of cardiovascular diseases. In this review, we elucidated the latest advances in construing the contribution imparted by the three arms of UPR to combat the adverse environment in the ER to restore cellular homeostasis during cardiomyopathies. We also summarized the various therapeutic agents that plays crucial role in tilting the UPR response towards pro-survival.
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Kim T, Croce CM. MicroRNA and ER stress in cancer. Semin Cancer Biol 2021; 75:3-14. [PMID: 33422566 DOI: 10.1016/j.semcancer.2020.12.025] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/24/2020] [Accepted: 12/30/2020] [Indexed: 12/12/2022]
Abstract
The development of biological technologies in genomics, proteomics, and bioinformatics has led to the identification and characterization of the complete set of coding genes and their roles in various cellular pathways in cancer. Nevertheless, the cellular pathways have not been fully figured out like a jigsaw puzzle with missing pieces. The discovery of noncoding RNAs including microRNAs (miRNAs) has provided the missing pieces of the cellular pathways. Likewise, miRNAs have settled many questions of inexplicable patches in the endoplasmic reticulum (ER) stress pathways. The ER stress-caused pathways typified by the unfolded protein response (UPR) are pivotal processes for cellular homeostasis and survival, rectifying uncontrolled proteostasis and determining the cell fate. Although various factors and pathways have been studied and characterized, the understanding of the ER stress requires more wedges to fill the cracks of knowledge about the ER stress pathways. Moreover, the roles of the ER stress and UPR are still controversial in cancer despite their strong potential to promote cancer. The noncoding RNAs, in particular, miRNAs aid in a better understanding of the ER stress and its role in cancer. In this review, miRNAs that are the more-investigated subtype of noncoding RNAs are focused on the interpretation of the ER stress in cancer, following the introduction of miRNA and ER stress.
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Affiliation(s)
- Taewan Kim
- Department of Anatomy, Histology & Developmental Biology, Base for International Science and Technology Cooperation, Carson Cancer Stem Cell Vaccines R&D Center, International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518055, China; The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, USA.
| | - Carlo M Croce
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH 43210, USA.
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Zhao T, Du J, Zeng H. Interplay between endoplasmic reticulum stress and non-coding RNAs in cancer. J Hematol Oncol 2020; 13:163. [PMID: 33267910 PMCID: PMC7709275 DOI: 10.1186/s13045-020-01002-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022] Open
Abstract
To survive, cancer cells are subjected to various internal and external adverse factors, including genetic mutations, hypoxia, nutritional deficiencies, and drug toxicity. All of these factors result in the accumulation of unfolded proteins in the endoplasmic reticulum, which leads to a condition termed endoplasmic reticulum stress (ER stress) and triggers the unfolded protein response (UPR). UPR downstream components strictly control transcription and translation reprogramming to ensure selective gene expression, including that of non-coding RNA (ncRNAs), to adapt to adverse environments. NcRNAs, including microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), play important roles in regulating target gene expression and protein translation, and their aberrant expression is related to tumor development. Dysregulation of ncRNAs is involved in the regulation of various cellular characteristics of cancer cells, including growth, apoptosis, metastasis, angiogenesis, drug sensitivity, and tumor stem cell properties. Notably, ncRNAs and ER stress can regulate each other and collaborate to determine the fate of tumor cells. Therefore, investigating the interaction between ER stress and ncRNAs is crucial for developing effective cancer treatment and prevention strategies. In this review, we summarize the ER stress-triggered UPR signaling pathways involved in carcinogenesis followed by the mutual regulation of ER stress and ncRNAs in cancer, which provide further insights into the understanding of tumorigenesis and therapeutic strategies.
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Affiliation(s)
- Tianming Zhao
- Department of Hematology, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, Guangdong, China
| | - Juan Du
- Department of Hematology, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, Guangdong, China
| | - Hui Zeng
- Department of Hematology, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, Guangdong, China.
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11
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Clinical Impact of Circulated miR-1291 in Plasma of Patients with Liver Cirrhosis (LC) and Hepatocellular Carcinoma (HCC): Implication on Glypican-3 Expression. J Gastrointest Cancer 2020; 51:234-241. [PMID: 31028536 DOI: 10.1007/s12029-019-00234-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE Liver cirrhosis (LC) is considered to be the end stage of chronic hepatopathies which may lead to hepatocellular carcinoma (HCC). Glypican-3 is one of the most promising serum markers for HCC. Abnormal expression of miRNAs may participate in cancer development and progression. In this study, we aimed to evaluate the relation between the expression of miR-1291 and GPC3 production as a non-invasive tool to differentiate patients with LC and HCC. METHODS HCV patients (100) were divided into two groups; HCC (I) and LC (II). Fifty hepatitis-free subjects served as the control group (III). Expression of serum GPC3 was performed by enzyme-linked immunosorbent assay, and expression of circulating miR-1291 was performed by quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS Serum levels of GPC3 were significantly elevated in patients with HCC compared with the LC group. Both groups have increased GPC3 levels in relation to healthy controls. Serum GPC3 levels with a cutoff value of 619.5 pg/ml had a 50% sensitivity and 89.3% specificity while alpha-fetoprotein (AFP) with a cutoff value of 8.5 ng/ml had a higher sensitivity (87.5%) and specificity (100%) in the detection of HCC. The primary use of both markers improved the specificity to 100%. miR-1291 was significantly upregulated in HCC and LC patients compared with control subjects. CONCLUSIONS Our findings might indicate that miR-1291 exert oncogenic effects in hepatic carcinogenesis through positive regulation of GPC3 expression. We propose that GPC3 overexpression and its associated oncogenic effects are linked to the upregulation of miR-1291 in HCV patients.
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12
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Ait-Aissa K, Nguyen QM, Gabani M, Kassan A, Kumar S, Choi SK, Gonzalez AA, Khataei T, Sahyoun AM, Chen C, Kassan M. MicroRNAs and obesity-induced endothelial dysfunction: key paradigms in molecular therapy. Cardiovasc Diabetol 2020; 19:136. [PMID: 32907629 PMCID: PMC7488343 DOI: 10.1186/s12933-020-01107-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 08/28/2020] [Indexed: 01/17/2023] Open
Abstract
The endothelium plays a pivotal role in maintaining vascular health. Obesity is a global epidemic that has seen dramatic increases in both adult and pediatric populations. Obesity perturbs the integrity of normal endothelium, leading to endothelial dysfunction which predisposes the patient to cardiovascular diseases. MicroRNAs (miRNAs) are short, single-stranded, non-coding RNA molecules that play important roles in a variety of cellular processes such as differentiation, proliferation, apoptosis, and stress response; their alteration contributes to the development of many pathologies including obesity. Mediators of obesity-induced endothelial dysfunction include altered endothelial nitric oxide synthase (eNOS), Sirtuin 1 (SIRT1), oxidative stress, autophagy machinery and endoplasmic reticulum (ER) stress. All of these factors have been shown to be either directly or indirectly caused by gene regulatory mechanisms of miRNAs. In this review, we aim to provide a comprehensive description of the therapeutic potential of miRNAs to treat obesity-induced endothelial dysfunction. This may lead to the identification of new targets for interventions that may prevent or delay the development of obesity-related cardiovascular disease.
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Affiliation(s)
- Karima Ait-Aissa
- Cardiovascular Division, Department of Medicine, and Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City, IA, 52242, USA.
| | - Quynh My Nguyen
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, USA
| | - Mohanad Gabani
- Cardiovascular Division, Department of Medicine, and Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City, IA, 52242, USA
| | - Adam Kassan
- Department of Pharmaceutical Sciences, School of Pharmacy, West Coast University, Los Angeles, USA
| | - Santosh Kumar
- Cardiovascular Division, Department of Medicine, and Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City, IA, 52242, USA
| | - Soo-Kyoung Choi
- Department of Physiology, College of Medicine, Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, South Korea
| | - Alexis A Gonzalez
- Instituto de Química, Pontificia, Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Tahsin Khataei
- Cardiovascular Division, Department of Medicine, and Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City, IA, 52242, USA
| | - Amal M Sahyoun
- Department of Food Science and Agriculture Chemistry, McGill University, Montreal, QC, Canada
| | - Cheng Chen
- Department of emergency and Critical Care, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Modar Kassan
- Cardiovascular Division, Department of Medicine, and Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City, IA, 52242, USA.
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13
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Chen Y, Zhou Y, Han F, Zhao Y, Tu M, Wang Y, Huang C, Fan S, Chen P, Yao X, Guan L, Yu AM, Gonzalez FJ, Huang M, Bi H. A novel miR-1291-ERRα-CPT1C axis modulates tumor cell proliferation, metabolism and tumorigenesis. Theranostics 2020; 10:7193-7210. [PMID: 32641987 PMCID: PMC7330864 DOI: 10.7150/thno.44877] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/18/2020] [Indexed: 12/11/2022] Open
Abstract
Rationale: MicroRNAs are known to influence the development of a variety of cancers. Previous studies revealed that miR-1291 has antiproliferative functions in cancer cells. Carnitine palmitoyltransferase 1C (CPT1C) has a vital role in mitochondrial energy metabolism and modulation of cancer cell proliferation. Since both miR-1291 and CPT1C regulate tumor cell metabolism and cancer progression, we hypothesized that they might be regulated synergistically. Methods: A series of cell phenotype indicators, such as BrdU, colony formation, cell cycle, ATP production, ROS accumulation and cell ability to resist metabolic stress, were performed to clarify the effects of miR-1291 and ERRα expression on tumor cell proliferation and metabolism. A xenograft tumor model was used to evaluate cell tumorigenesis. Meta-analysis and bioinformatic prediction were applied in the search for the bridge-link between miR-1291 and CPT1C. RT-qPCR, western-blot and IHC analysis were used for the detection of mRNA and protein expression. Luciferase assays and ChIP assays were conducted for in-depth mechanism studies. Results: The expression of miR-1291 inhibited growth and tumorigenesis as a result of modulation of metabolism. CPT1C expression was indirectly and negatively correlated with miR-1291 levels. ESRRA was identified as a prominent differentially expressed gene in both breast and pancreatic cancer samples, and estrogen-related receptor α (ERRα) was found to link miR-1291 and CPT1C. MiR-1291 targeted ERRα and CPT1C was identified as a newly described ERRα target gene. Moreover, ERRα was found to influence cancer cell metabolism and proliferation, consistent with the cellular changes caused by miR-1291. Conclusion: This study demonstrated the existence and mechanism of action of a novel miR-1291-ERRα-CPT1C cancer metabolism axis that may provide new insights and strategies for the development of miRNA-based therapies for malignant cancers.
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Affiliation(s)
- Yixin Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Yanying Zhou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Fangwei Han
- School of Public Health, UNT Health Science Center, Fort Worth, TX 76107, USA
| | - Yingyuan Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Meijuan Tu
- Department of Biochemistry & Molecular Medicine, UC Davis School of Medicine, Sacramento, CA 95817, USA
| | - Yongtao Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Can Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Shicheng Fan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Panpan Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Xinpeng Yao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Lihuan Guan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Ai-Ming Yu
- Department of Biochemistry & Molecular Medicine, UC Davis School of Medicine, Sacramento, CA 95817, USA
| | - Frank J. Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Min Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
| | - Huichang Bi
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China 510006
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14
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Park HR, Sun R, Panganiban RA, Christiani DC, Lu Q. MicroRNA-124 Reduces Arsenic-induced Endoplasmic Reticulum Stress and Neurotoxicity and is Linked with Neurodevelopment in Children. Sci Rep 2020; 10:5934. [PMID: 32246005 PMCID: PMC7125130 DOI: 10.1038/s41598-020-62594-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/09/2020] [Indexed: 12/11/2022] Open
Abstract
Arsenic (As) exposure adversely affects neurodevelopment in children. Accumulation of misfolded proteins in cells exposed to As leads to endoplasmic reticulum (ER) stress response, which, if not relieved, results in cell death. Despite the potential role of ER stress for As-induced neurotoxicity, the underlying mechanisms remain poorly understood. Here we aimed to investigate the roles of microRNA(miR)-124, a novel ER stress suppressor, in As-induced ER stress response and cytotoxicity in neural cells. We further aimed to link these in vitro findings to neurodevelopmental outcomes in children who were exposed to As. Using Quantitative RT-PCR and Cyquant assay, we showed that miR-124 protects against As-induced cytotoxicity in neural cells with concomitant suppression of As-induced ER stress. In addition, As-induced cytotoxicity was exacerbated in miR-124 knockout cells generated by CRISPR-based gene editing compared scramble control. Furthermore, we identified two miR-124 SNPs rs67543816 (p = 0.0003) and rs35418153 (p = 0.0004) that are significantly associated with a mental composite score calculated from the Bayley Scales of Infant Development III in Bangladesh children. Our study reveals As-induced ER stress as a crucial mechanism underlying the toxic effects of As on neural cell function and neurodevelopment and identifies miR-124 as a potential preventative and therapeutic target against detrimental effects of As exposure in children.
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Affiliation(s)
- Hae-Ryung Park
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - Ryan Sun
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - Ronald A Panganiban
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - David C Christiani
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - Quan Lu
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA.
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15
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Panganiban RA, Park HR, Sun M, Shumyatcher M, Himes BE, Lu Q. Genome-wide CRISPR screen identifies suppressors of endoplasmic reticulum stress-induced apoptosis. Proc Natl Acad Sci U S A 2019; 116:13384-13393. [PMID: 31213543 PMCID: PMC6613086 DOI: 10.1073/pnas.1906275116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Sensing misfolded proteins in the endoplasmic reticulum (ER), cells initiate the ER stress response and, when overwhelmed, undergo apoptosis. However, little is known about how cells prevent excessive ER stress response and cell death to restore homeostasis. Here, we report the identification and characterization of cellular suppressors of ER stress-induced apoptosis. Using a genome-wide CRISPR library, we screen for genes whose inactivation further increases ER stress-induced up-regulation of C/EBP homologous protein 10 (CHOP)-the transcription factor central to ER stress-associated apoptosis. Among the top validated hits are two interacting components of the polycomb repressive complex (L3MBTL2 [L(3)Mbt-Like 2] and MGA [MAX gene associated]), and microRNA-124-3 (miR-124-3). CRISPR knockout of these genes increases CHOP expression and sensitizes cells to apoptosis induced by multiple ER stressors, while overexpression confers the opposite effects. L3MBTL2 associates with the CHOP promoter in unstressed cells to repress CHOP induction but dissociates from the promoter in the presence of ER stress, whereas miR-124-3 directly targets the IRE1 branch of the ER stress pathway. Our study reveals distinct mechanisms that suppress ER stress-induced apoptosis and may lead to a better understanding of diseases whose pathogenesis is linked to overactive ER stress response.
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Affiliation(s)
- Ronald A Panganiban
- Program in Molecular and Integrative Physiological Sciences, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115
| | - Hae-Ryung Park
- Program in Molecular and Integrative Physiological Sciences, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115
| | - Maoyun Sun
- Program in Molecular and Integrative Physiological Sciences, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115
| | - Maya Shumyatcher
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Blanca E Himes
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Quan Lu
- Program in Molecular and Integrative Physiological Sciences, Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115;
- Department of Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115
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16
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Neerukonda SN, Katneni UK, Bott M, Golovan SP, Parcells MS. Induction of the unfolded protein response (UPR) during Marek's disease virus (MDV) infection. Virology 2018; 522:1-12. [PMID: 29979959 DOI: 10.1016/j.virol.2018.06.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/14/2018] [Accepted: 06/27/2018] [Indexed: 12/22/2022]
Abstract
Marek's disease (MD) is a pathology of chickens associated with paralysis, immune suppression, and the rapid formation of T-cell lymphomas. MD is caused by the herpesvirus, Marek's disease virus (MDV). We examined endoplasmic reticulum (ER) stress and the activation of unfolded protein response (UPR) pathways during MDV infection of cells in culture and lymphocytes in vivo. MDV strains activate the UPR as measured by increased mRNA expression of GRP78/BiP with concomitant XBP1 splicing and induction of its target gene, EDEM1. Cell culture replication of virulent, but not vaccine MDVs, activated the UPR at late in infection. Pathotype-associated UPR activation was induced to a greater level by a vv + MDV. Discrete UPR activation was observed during MDV in vivo infection, with the level of UPR modulation being affected by the MDV oncoprotein Meq. Finally, ATF6 was found to be activated in vv + MDV-induced primary lymphomas, suggesting a possible role in tumor progression.
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Affiliation(s)
- Sabari Nath Neerukonda
- Department of Animal and Food Sciences, University of Delaware, 052 Townsend Hall, 531 South College Ave, Newark, DE 19716, United States.
| | - Upendra K Katneni
- Department of Animal and Food Sciences, University of Delaware, 052 Townsend Hall, 531 South College Ave, Newark, DE 19716, United States.
| | - Matthew Bott
- Department of Animal and Food Sciences, University of Delaware, 052 Townsend Hall, 531 South College Ave, Newark, DE 19716, United States.
| | | | - Mark S Parcells
- Department of Animal and Food Sciences, University of Delaware, 052 Townsend Hall, 531 South College Ave, Newark, DE 19716, United States.
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17
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Cartier F, Indersie E, Lesjean S, Charpentier J, Hooks KB, Ghousein A, Desplat A, Dugot-Senant N, Trézéguet V, Sagliocco F, Hagedorn M, Grosset CF. New tumor suppressor microRNAs target glypican-3 in human liver cancer. Oncotarget 2018; 8:41211-41226. [PMID: 28476031 PMCID: PMC5522324 DOI: 10.18632/oncotarget.17162] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 03/25/2017] [Indexed: 12/22/2022] Open
Abstract
Glypican-3 (GPC3) is an oncogene, frequently upregulated in liver malignancies such as hepatocellular carcinoma (HCC) and hepatoblastoma and constitutes a potential molecular target for therapy in liver cancer. Using a functional screening system, we identified 10 new microRNAs controlling GPC3 expression in malignant liver cells, five of them e.g. miR-4510, miR-203a-3p, miR-548aa, miR-376b-3p and miR-548v reduce GPC3 expression. These 5 microRNAs were significantly downregulated in tumoral compared to non-tumoral liver and inhibited tumor cell proliferation. Interestingly, miR-4510 inversely correlated with GPC3 mRNA and protein in HCC samples. This microRNA also induced apoptosis of hepatoma cells and blocked tumor growth in vivo in the chick chorioallantoic membrane model. We further show that the tumor suppressive effect of miR-4510 is mediated through direct targeting of GPC3 mRNA and inactivation of Wnt/β-catenin transcriptional activity and signaling pathway. Moreover, miR-4510 up-regulated the expression of several tumor suppressor genes while reducing the expression of other pro-oncogenes. In summary, we uncovered several new microRNAs targeting the oncogenic functions of GPC3. We provided strong molecular, cellular and in vivo evidences for the tumor suppressive activities of miR-4510 bringing to the fore the potential value of this microRNA in HCC therapy.
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Affiliation(s)
- Flora Cartier
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Emilie Indersie
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Sarah Lesjean
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Justine Charpentier
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Katarzyna B Hooks
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Amani Ghousein
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Angélique Desplat
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Nathalie Dugot-Senant
- INSERM US005 - TBM Core, Service for Experimental Histopathology, F-33000 Bordeaux, France
| | - Véronique Trézéguet
- University of Bordeaux, F-33000 Bordeaux, France.,CNRS, UMR5248, Chimie & Biologie des Membranes & des Nano-objets, CBMN, F-33600 Pessac, France
| | - Francis Sagliocco
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Martin Hagedorn
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Christophe F Grosset
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
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18
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Wang S, Binder P, Fang Q, Wang Z, Xiao W, Liu W, Wang X. Endoplasmic reticulum stress in the heart: insights into mechanisms and drug targets. Br J Pharmacol 2018; 175:1293-1304. [PMID: 28548229 PMCID: PMC5867005 DOI: 10.1111/bph.13888] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/04/2017] [Accepted: 05/16/2017] [Indexed: 01/03/2023] Open
Abstract
The endoplasmic reticulum (ER) serves several essential cellular functions including protein synthesis, protein folding, protein translocation, calcium homoeostasis and lipid biosynthesis. Physiological or pathological stimuli, which disrupt ER homoeostasis and disturb its functions, lead to an accumulation of misfolded and unfolded proteins, a condition referred to as ER stress. ER stress triggers the unfolded protein response to restore the homoeostasis of ER, through activating transcriptional and translational pathways. However, prolonged ER stress will lead to cell dysfunction and apoptosis. Recent evidence revealed that ER stress is involved in the development and progression of various heart diseases, such as cardiac hypertrophy, ischaemic heart diseases and heart failure. Therefore, improved understanding of the molecular mechanisms of ER stress in heart disease will help to investigate more potential targets for new therapeutic interventions and drug discovery. LINKED ARTICLES This article is part of a themed section on Spotlight on Small Molecules in Cardiovascular Diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.8/issuetoc.
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Affiliation(s)
- Shunyao Wang
- Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterUK
| | - Pablo Binder
- Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterUK
| | - Qiru Fang
- State Key Laboratory of New‐tech for Chinese Medicine Pharmaceutical ProcessLianyungangChina
| | - Zhenzhong Wang
- State Key Laboratory of New‐tech for Chinese Medicine Pharmaceutical ProcessLianyungangChina
| | - Wei Xiao
- State Key Laboratory of New‐tech for Chinese Medicine Pharmaceutical ProcessLianyungangChina
| | - Wei Liu
- Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterUK
| | - Xin Wang
- Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterUK
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19
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Tu MJ, Pan YZ, Qiu JX, Kim EJ, Yu AM. MicroRNA-1291 targets the FOXA2-AGR2 pathway to suppress pancreatic cancer cell proliferation and tumorigenesis. Oncotarget 2018; 7:45547-45561. [PMID: 27322206 PMCID: PMC5216741 DOI: 10.18632/oncotarget.9999] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/29/2016] [Indexed: 01/13/2023] Open
Abstract
Pancreatic cancer is the fourth leading cause of cancer death in the United States. Better understanding of pancreatic cancer biology may help identify new oncotargets towards more effective therapies. This study investigated the mechanistic actions of microRNA-1291 (miR-1291) in the suppression of pancreatic tumorigenesis. Our data showed that miR-1291 was downregulated in a set of clinical pancreatic carcinoma specimens and human pancreatic cancer cell lines. Restoration of miR-1291 expression inhibited pancreatic cancer cell proliferation, which was associated with cell cycle arrest and enhanced apoptosis. Furthermore, miR-1291 sharply suppressed the tumorigenicity of PANC-1 cells in mouse models. A proteomic profiling study revealed 32 proteins altered over 2-fold in miR-1291-expressing PANC-1 cells that could be assembled into multiple critical pathways for cancer. Among them anterior gradient 2 (AGR2) was reduced to the greatest degree. Through computational and experimental studies we further identified that forkhead box protein A2 (FOXA2), a transcription factor governing AGR2 expression, was a direct target of miR-1291. These results connect miR-1291 to the FOXA2-AGR2 regulatory pathway in the suppression of pancreatic cancer cell proliferation and tumorigenesis, providing new insight into the development of miRNA-based therapy to combat pancreatic cancer.
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Affiliation(s)
- Mei-Juan Tu
- Department of Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, CA 95817, USA
| | - Yu-Zhuo Pan
- Department of Pharmaceutical Sciences, SUNY-Buffalo, Buffalo, NY 14214, USA
| | - Jing-Xin Qiu
- Department of Pathology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Edward J Kim
- Division of Hematology and Oncology, UC Davis Comprehensive Cancer Center, Sacramento, CA 95817, USA
| | - Ai-Ming Yu
- Department of Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, CA 95817, USA
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20
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McMahon M, Samali A, Chevet E. Regulation of the unfolded protein response by noncoding RNA. Am J Physiol Cell Physiol 2017. [DOI: 10.1152/ajpcell.00293.2016] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cells are exposed to various intrinsic and extrinsic stresses in both physiological and pathological conditions. To adapt to those conditions, cells have evolved various mechanisms to cope with the disturbances in protein demand, largely through the unfolded protein response (UPR) in the endoplasmic reticulum (ER), but also through the integrated stress response (ISR). Both responses initiate downstream signaling to transcription factors that, in turn, trigger adaptive programs and/or in the case of prolonged stress, cell death mechanisms. Recently, noncoding RNAs, including microRNA and long noncoding RNA, have emerged as key players in the stress responses. These noncoding RNAs act as both regulators and effectors of the UPR and fine-tune the output of the stress signaling pathways. Although much is known about the UPR and the cross talk that exists between pathways, the contribution of small noncoding RNA has not been fully assessed. Herein we bring together and review the current known functions of noncoding RNA in regulating adaptive pathways in both physiological and pathophysiological conditions, illustrating how they operate within the known UPR functions and contribute to diverse cellular outcomes.
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Affiliation(s)
- Mari McMahon
- INSERM U1242 “Chemistry, Oncogenesis, Stress, Signalling,” Université de Rennes 1, Rennes, France
- Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France; and
- Apoptosis Research Centre, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Afshin Samali
- Apoptosis Research Centre, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Eric Chevet
- INSERM U1242 “Chemistry, Oncogenesis, Stress, Signalling,” Université de Rennes 1, Rennes, France
- Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France; and
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21
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Xu Q, Duan H, Gan L, Liu X, Chen F, Shen X, Tang YQ, Wang S. MicroRNA-1291 promotes endometrial fibrosis by regulating the ArhGAP29-RhoA/ROCK1 signaling pathway in a murine model. Mol Med Rep 2017; 16:4501-4510. [PMID: 28849001 PMCID: PMC5647010 DOI: 10.3892/mmr.2017.7210] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 06/08/2017] [Indexed: 12/17/2022] Open
Abstract
Intrauterine adhesions (IUAs) are caused by endometrial damage and are associated with a poor pregnancy prognosis including infertility, oligomenorrhea and recurrent pregnancy loss. Understanding the pathogenesis of IUAs may help prevent and treat this condition more effectively. The aim of the current study was to investigate the function of microRNA-1291 (miR-1291) during the development of IUAs following endometrial damage and elucidate the potential molecular mechanisms involved. The expression of Rho GTPase activating protein 29 (ArhGAP29), a putative target mRNA of miR-1291, was determined by immunohistochemical staining of human endometrial tissue from patients with IUAs and compared with normal endometrial tissues. ArhGAP29 expression was significantly decreased in endometrial tissues with IUAs compared with normal endometrium. Additionally, a murine IUAs model was developed and reverse transcription-quantitative polymerase chain reaction (RT-qPCR) demonstrated that miR-1291 levels were significantly increased in the uterine tissue and plasma of the IUAs group compared with the normal mice. Furthermore, an miR-1291 antagomir was injected into the uterine cavity of experimental IUAs mice to block miR-1291. Hematoxylin and eosin and Masson's stain revealed that blocking miR-1291 significantly ameliorated endometrial fibrosis. Furthermore, levels of epithelial mesenchymal transition (EMT)-associated proteins, and ArhGAP29-RhoA/Rho-associated coiled coil containing protein kinase 1 (ROCK1) were measured in uterine tissue by western blot, RT-qPCR analysis and immunofluorescence staining. Levels of the mesenchymal marker proteins, vimentin and N-cadherin, were increased in the IUAs group mice, accompanied by a relative decrease in the epithelial marker proteins, cytokeratin and E-cadherin compared with normal murine endometrium. miR-1291 inhibition decreased RhoA/ROCK1 expression in the EMT pathway, but increased ArhGAP29 expression. Taken together, the findings indicate that miR-1291 acts upstream of ArhGAP29 to negatively regulate the RhoA/ROCK1 EMT pathway, ultimately leading to endometrial fibrosis. These studies may provide new potential therapeutic options and pave the way to use circulating miR-1291 as a clinical biomarker of endometrial fibrosis.
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Affiliation(s)
- Qian Xu
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Hua Duan
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Lu Gan
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Xin Liu
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Fang Chen
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Xue Shen
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Yi-Qun Tang
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
| | - Sha Wang
- Department of Gynecology Minimally Invasive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Dong Cheng, Beijing 100006, P.R. China
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22
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IRE1α links Nck1 deficiency to attenuated PTP1B expression in HepG2 cells. Cell Signal 2017; 36:79-90. [DOI: 10.1016/j.cellsig.2017.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/11/2017] [Accepted: 04/23/2017] [Indexed: 12/23/2022]
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23
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Liu H, Zhang Z, Li Q. DR5 but not miRNA-181 or miRNA-211 is involved in ER stress-mediated apoptosis induced by palmitate in islet β cells. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:7692-7698. [PMID: 31966615 PMCID: PMC6965268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 05/23/2017] [Indexed: 06/10/2023]
Abstract
Free fatty acid (FFA)-induced apoptosis and endoplasmic reticulum (ER) stress of pancreatic β-cells contribute to the development of type 2 diabetes; however, the molecular mechanisms involved are not explicated clearly. In this study we have investigated the role of miRNA-181 and miRNA-211 and DR5 in saturated FFA-induced apoptosis of the rat pancreatic β-cells INS-1. Rat pancreatic β-cells INS-1 were treated with or without palmitate for 24 h. CCK-8 was used for cell viability detection. The miRNA-181 and -211 and mRNA expression of GRP78, ATF4, CHOP and DR5 were explored by quantitative real-time PCR. We found that palmitate at apoptosis-inducing concentration activated ER stress signaling pathways and the expressions of GRP78, ATF4 and CHOP were significantly increased after stimulation in INS-1 cells. In addition, mRNA level of DR5 was also upregulated in palmitate treated group. But the expressions of miRNA-181 and -211 did not significantly changed during lipoapoptosis by palmitate in INS-1 cells. We have demonstrated that miRNA-181 and miRNA-211 are not key players in ER stress-related apoptosis induced by saturated FFA in rat pancreatic β cells INS-1. However, DR5 appears to be involved in the modulation of saturated FFA-induced apoptosis of INS-1 cells, probably by a mechanism dependent on ER stress signaling.
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Affiliation(s)
- Huifang Liu
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical UniversityHarbin, Heilongjiang, China
- Key Laboratory of Myocardial Ischemia, Ministry of Education, Harbin Medical UniversityHarbin, Heilongjiang, China
| | - Zhiying Zhang
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical UniversityHarbin, Heilongjiang, China
- Key Laboratory of Myocardial Ischemia, Ministry of Education, Harbin Medical UniversityHarbin, Heilongjiang, China
| | - Qiang Li
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical UniversityHarbin, Heilongjiang, China
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24
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Zhou F, Shang W, Yu X, Tian J. Glypican-3: A promising biomarker for hepatocellular carcinoma diagnosis and treatment. Med Res Rev 2017. [PMID: 28621802 DOI: 10.1002/med.21455] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Liver cancer is the second leading cause of cancer-related deaths, and hepatocellular carcinoma (HCC) is the most common type. Therefore, molecular targets are urgently required for the early detection of HCC and the development of novel therapeutic approaches. Glypican-3 (GPC3), an oncofetal proteoglycan anchored to the cell membrane, is normally detected in the fetal liver but not in the healthy adult liver. However, in HCC patients, GPC3 is overexpressed at both the gene and protein levels, and its expression predicts a poor prognosis. Mechanistic studies have revealed that GPC3 functions in HCC progression by binding to molecules such as Wnt signaling proteins and growth factors. Moreover, GPC3 has been used as a target for molecular imaging and therapeutic intervention in HCC. To date, GPC3-targeted magnetic resonance imaging, positron emission tomography, and near-infrared imaging have been investigated for early HCC detection, and various immunotherapeutic protocols targeting GPC3 have been developed, including the use of humanized anti-GPC3 cytotoxic antibodies, treatment with peptide/DNA vaccines, immunotoxin therapies, and genetic therapies. In this review, we summarize the current knowledge regarding the structure, function, and biology of GPC3 with a focus on its clinical potential as a diagnostic molecule and a therapeutic target in HCC immunotherapy.
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Affiliation(s)
- Fubo Zhou
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - Wenting Shang
- Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - Jie Tian
- Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
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25
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Wang S, Wang Z, Fan Q, Guo J, Galli G, Du G, Wang X, Xiao W. Ginkgolide K protects the heart against endoplasmic reticulum stress injury by activating the inositol-requiring enzyme 1α/X box-binding protein-1 pathway. Br J Pharmacol 2016; 173:2402-18. [PMID: 27186946 PMCID: PMC4945765 DOI: 10.1111/bph.13516] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 03/23/2016] [Accepted: 05/05/2016] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Endoplasmic reticulum (ER) stress is increasingly recognized as an important causal factor of many diseases. Targeting ER stress has now emerged as a new therapeutic strategy for treating cardiovascular diseases. Here, we investigated the effects and underlying mechanism of ginkgolide K (1,10-dihydroxy-3,14-didehydroginkgolide, GK) on cardiac ER stress. EXPERIMENTAL APPROACH Cell death, apoptosis and ER stress-related signalling pathways were measured in cultured neonatal rat cardiomyocytes, treated with the ER stress inducers tunicamycin, hydrogen peroxide and thapsigargin. Acute myocardial infarction was established using left coronary artery occlusion in mice, and infarct size was measured by triphenyltetrazolium chloride staining. Echocardiography was used to assess heart function and transmission electron microscopy for evaluating ER expansion. KEY RESULTS Ginkgolide K (GK) significantly decreased ER stress-induced cell death in both in vitro and in vivo models. In ischaemic injured mice, GK treatment reduced infarct size, rescued heart dysfunction and ameliorated ER dilation. Mechanistic studies revealed that the beneficial effects of GK occurred through enhancement of inositol-requiring enzyme 1α (IRE1α)/X box-binding protein-1 (XBP1) activity, which in turn led to increased ER-associated degradation-mediated clearance of misfolded proteins and autophagy. In addition, GK was also able to partly repress the pro-apoptotic action of regulated IRE1-dependent decay and JNK pathway. CONCLUSIONS AND IMPLICATIONS In conclusion, GK acts through selective activation of the IRE1α/XBP1 pathway to limit ER stress injury. GK is revealed as a promising therapeutic agent to ameliorate ER stress for treating cardiovascular diseases.
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Affiliation(s)
- Shoubao Wang
- Faculty of Life SciencesThe University of ManchesterManchesterUK
- Beijing Key Laboratory of Drug Targets Identification and Drug ScreeningInstitute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Zhenzhong Wang
- State Key Laboratory of New‐tech for Chinese Medicine Pharmaceutical ProcessLianyungangChina
| | - Qiru Fan
- State Key Laboratory of New‐tech for Chinese Medicine Pharmaceutical ProcessLianyungangChina
- Faculty of Life Science and TechnologyChina Pharmaceutical UniversityNanjingChina
| | - Jing Guo
- Faculty of Life SciencesThe University of ManchesterManchesterUK
| | - Gina Galli
- Faculty of Life SciencesThe University of ManchesterManchesterUK
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug ScreeningInstitute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xin Wang
- Faculty of Life SciencesThe University of ManchesterManchesterUK
| | - Wei Xiao
- State Key Laboratory of New‐tech for Chinese Medicine Pharmaceutical ProcessLianyungangChina
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26
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Chevet E, Hetz C, Samali A. Endoplasmic reticulum stress-activated cell reprogramming in oncogenesis. Cancer Discov 2015; 5:586-97. [PMID: 25977222 DOI: 10.1158/2159-8290.cd-14-1490] [Citation(s) in RCA: 271] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 04/28/2015] [Indexed: 12/29/2022]
Abstract
UNLABELLED Stress induced by the accumulation of unfolded proteins in the endoplasmic reticulum (ER) is observed in many human diseases, including cancers. Cellular adaptation to ER stress is mediated by the unfolded protein response (UPR), which aims at restoring ER homeostasis. The UPR has emerged as a major pathway in remodeling cancer gene expression, thereby either preventing cell transformation or providing an advantage to transformed cells. UPR sensors are highly regulated by the formation of dynamic protein scaffolds, leading to integrated reprogramming of the cells. Herein, we describe the regulatory mechanisms underlying UPR signaling upon cell intrinsic or extrinsic challenges, and how they engage cell transformation programs and/or provide advantages to cancer cells, leading to enhanced aggressiveness or chemoresistance. We discuss the emerging cross-talk between the UPR and related metabolic processes to ensure maintenance of protein homeostasis and its impact on cell transformation and tumor growth. SIGNIFICANCE ER stress signaling is dysregulated in many forms of cancer and contributes to tumor growth as a survival factor, in addition to modulating other disease-associated processes, including cell migration, cell transformation, and angiogenesis. Evidence for targeting the ER stress signaling pathway as an anticancer strategy is compelling, and novel agents that selectively inhibit the UPR have demonstrated preliminary evidence of preclinical efficacy with an acceptable safety profile.
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Affiliation(s)
- Eric Chevet
- Oncogenesis, Stress, Cancer, University of Rennes, Rennes, France. Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France.
| | - Claudio Hetz
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile. Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, Santiago, Chile. Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts.
| | - Afshin Samali
- Apoptosis Research Centre, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland.
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27
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Cunard R. Endoplasmic Reticulum Stress in the Diabetic Kidney, the Good, the Bad and the Ugly. J Clin Med 2015; 4:715-40. [PMID: 26239352 PMCID: PMC4470163 DOI: 10.3390/jcm4040715] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 03/31/2015] [Indexed: 02/06/2023] Open
Abstract
Diabetic kidney disease is the leading worldwide cause of end stage kidney disease and a growing public health challenge. The diabetic kidney is exposed to many environmental stressors and each cell type has developed intricate signaling systems designed to restore optimal cellular function. The unfolded protein response (UPR) is a homeostatic pathway that regulates endoplasmic reticulum (ER) membrane structure and secretory function. Studies suggest that the UPR is activated in the diabetic kidney to restore normal ER function and viability. However, when the cell is continuously stressed in an environment that lies outside of its normal physiological range, then the UPR is known as the ER stress response. The UPR reduces protein synthesis, augments the ER folding capacity and downregulates mRNA expression of genes by multiple pathways. Aberrant activation of ER stress can also induce inflammation and cellular apoptosis, and modify signaling of protective processes such as autophagy and mTORC activation. The following review will discuss our current understanding of ER stress in the diabetic kidney and explore novel means of modulating ER stress and its interacting signaling cascades with the overall goal of identifying therapeutic strategies that will improve outcomes in diabetic nephropathy.
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Affiliation(s)
- Robyn Cunard
- Research Service and Division of Nephrology-Hypertension, Veterans Affairs San Diego Healthcare System, Veterans Medical Research Foundation, San Diego, CA 92161, USA.
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA.
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28
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Maurel M, McGrath EP, Mnich K, Healy S, Chevet E, Samali A. Controlling the unfolded protein response-mediated life and death decisions in cancer. Semin Cancer Biol 2015; 33:57-66. [PMID: 25814342 DOI: 10.1016/j.semcancer.2015.03.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 03/14/2015] [Accepted: 03/16/2015] [Indexed: 12/20/2022]
Abstract
Cancer cells are exposed to intrinsic (oncogene) or extrinsic (microenvironmental) challenges, leading to activation of stress response pathways. The unfolded protein response (UPR) is the cellular response to endoplasmic reticulum (ER) stress and plays a pivotal role in tumor development. Depending on ER stress intensity and duration, the UPR is either pro-survival to preserve ER homeostasis or pro-death if the stress cannot be resolved. On one hand, the adaptive arm of the UPR is essential for cancer cells to survive the harsh conditions they are facing, and on the other hand, cancer cells have evolved mechanisms to bypass ER stress-induced cell death, thereby conferring them with a selective advantage for malignant transformation. Therefore, the mechanisms involved in the balance between survival and death outcomes of the UPR may be exploited as therapeutic tools to treat cancer.
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Affiliation(s)
- Marion Maurel
- Apoptosis Research Centre, National University of Ireland, Galway, Ireland; Centre de Lutte Contre le Cancer Eugène Marquis, 35000 Rennes, France
| | - Eoghan P McGrath
- Apoptosis Research Centre, National University of Ireland, Galway, Ireland
| | - Katarzyna Mnich
- Apoptosis Research Centre, National University of Ireland, Galway, Ireland
| | - Sandra Healy
- Apoptosis Research Centre, National University of Ireland, Galway, Ireland
| | - Eric Chevet
- Inserm U1052, F-33000, University of Bordeaux, Bordeaux, France; Centre de Lutte Contre le Cancer Eugène Marquis, 35000 Rennes, France
| | - Afshin Samali
- Apoptosis Research Centre, National University of Ireland, Galway, Ireland.
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29
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Kim H, Bhattacharya A, Qi L. Endoplasmic reticulum quality control in cancer: Friend or foe. Semin Cancer Biol 2015; 33:25-33. [PMID: 25794824 DOI: 10.1016/j.semcancer.2015.02.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 02/25/2015] [Indexed: 12/22/2022]
Abstract
Quality control systems in the endoplasmic reticulum (ER) mediated by unfolded protein response (UPR) and endoplasmic reticulum associated degradation (ERAD) ensure cellular function and organismal survival. Recent studies have suggested that ER quality-control systems in cancer cells may serve as a double-edged sword that aids progression as well as prevention of tumor growth in a context-dependent manner. Here we review recent advances in our understanding of the complex relationship between ER proteostasis and cancer pathology, with a focus on the two most conserved ER quality-control mechanisms--the IRE1α-XBP1 pathway of the UPR and SEL1L-HRD1 complex of the ERAD.
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Affiliation(s)
- Hana Kim
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, United States
| | - Asmita Bhattacharya
- Graduate Program in Genetics Genomics and Development, Cornell University, Ithaca, NY 14853, United States
| | - Ling Qi
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, United States; Graduate Program in Genetics Genomics and Development, Cornell University, Ithaca, NY 14853, United States.
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30
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Kim SJ, Kang HS, Lee JH, Park JH, Jung CH, Bae JH, Oh BC, Song DK, Baek WK, Im SS. Melatonin ameliorates ER stress-mediated hepatic steatosis through miR-23a in the liver. Biochem Biophys Res Commun 2015; 458:462-469. [PMID: 25660457 DOI: 10.1016/j.bbrc.2015.01.117] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 01/25/2015] [Indexed: 01/11/2023]
Abstract
The endoplasmic reticulum (ER) stress induces hepatic steatosis and inflammation in the liver. Although melatonin ameliorates ER stress-target genes, it remains unknown whether melatonin protects against hepatic steatosis as well as inflammation through regulation of miRNA. MicroRNAs have been identified as pivotal regulators in the field of gene regulation and their dysfunctions are a common feature in a variety of metabolic diseases. Especially, among miRNAs, miR-23a has been shown to regulate ER stress. Herein, we investigated the crucial roles of melatonin in hepatic steatosis and inflammation in vivo. Tunicamycin challenge caused increase of hepatic triglyceride and intracellular calcium levels through activation of ER stress, whereas these phenomena were partially disrupted by melatonin. We also demonstrated that expression of miR-23a stimulated with tunicamycin was rescued by melatonin treatment, resulting in reduced ER stress in primary hepatocytes. Overall, these results suggest a new function of melatonin that is involved in ameliorating ER stress-induced hepatic steatosis and inflammation by attenuating miR-23a. Melatonin may be useful as a pharmacological agent to protect against hepatic metabolic diseases due to its ability to regulate expression of miR-23a.
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Affiliation(s)
- Seung-Jae Kim
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Hye Suk Kang
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Jae-Ho Lee
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Jae-Hyung Park
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Chang Hwa Jung
- Metabolism and Nutrition Research Group, Korea Food Research Institute, Seongnam, South Korea
| | - Jae-Hoon Bae
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Byung-Chul Oh
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University of Medicine and Science, Incheon 406-840, South Korea
| | - Dae-Kyu Song
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Won-Ki Baek
- Dept of Microbiology, Keimyung University School of Medicine, Daegu 704-701, South Korea
| | - Seung-Soon Im
- Dept of Physiology, Keimyung University School of Medicine, Daegu 704-701, South Korea.
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31
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Lhomond S, Pallares N, Barroso K, Schmit K, Dejeans N, Fazli H, Taouji S, Patterson JB, Chevet E. Adaptation of the secretory pathway in cancer through IRE1 signaling. Methods Mol Biol 2015; 1292:177-94. [PMID: 25804756 DOI: 10.1007/978-1-4939-2522-3_13] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The unfolded protein response (UPR) was originally identified as a signaling network coordinating adaptive and apoptotic responses to accumulation of unfolded proteins in the endoplasmic reticulum (ER). More recent work has shown that UPR signaling can be triggered by a multitude of cellular events and that the UPR plays a critical role in the prevention of cell transformation but also in tumor development. This has been particularly well illustrated with studies on one of the three major ER stress sensors, IRE1. This ER resident type I transmembrane protein senses luminal ER stress and transduce signals through its cytosolic RNase activity. IRE1 signaling has been shown to contribute to the progression of solid tumors through pro-angiogenic mechanisms. Herein, we expose the methodologies for investigating IRE1 signaling in tumor cells and in tumors. Moreover, we show that selective pharmacological inhibition of IRE1 RNase activity sensitizes tumor cells to ER stress.
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Affiliation(s)
- Stéphanie Lhomond
- Inserm, U1053, Université de Bordeaux, 146 rue Léo Saignat, 33000, Bordeaux, France
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32
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Ibrahim SA, Hassan H, Götte M. MicroRNA regulation of proteoglycan function in cancer. FEBS J 2014; 281:5009-22. [DOI: 10.1111/febs.13026] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 08/08/2014] [Accepted: 08/26/2014] [Indexed: 01/08/2023]
Affiliation(s)
- Sherif A. Ibrahim
- Department of Zoology; Faculty of Science; Cairo University; Giza Egypt
| | - Hebatallah Hassan
- Department of Zoology; Faculty of Science; Cairo University; Giza Egypt
| | - Martin Götte
- Department of Gynecology and Obstetrics; Münster University Hospital; Germany
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33
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Dufey E, Sepúlveda D, Rojas-Rivera D, Hetz C. Cellular Mechanisms of Endoplasmic Reticulum Stress Signaling in Health and Disease. 1. An overview. Am J Physiol Cell Physiol 2014; 307:C582-94. [DOI: 10.1152/ajpcell.00258.2014] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Increased demand on the protein folding capacity of the endoplasmic reticulum (ER) engages an adaptive reaction known as the unfolded protein response (UPR). The UPR regulates protein translation and the expression of numerous target genes that contribute to restore ER homeostasis or induce apoptosis of irreversibly damaged cells. UPR signaling is highly regulated and dynamic and integrates information about the type, intensity, and duration of the stress stimuli, thereby determining cell fate. Recent advances highlight novel physiological outcomes of the UPR beyond specialized secretory cells, particularly in innate immunity, metabolism, and cell differentiation. Here we discuss studies on the fine-tuning of the UPR and its physiological role in diverse organs and diseases.
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Affiliation(s)
- Estefanie Dufey
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, University of Chile, Santiago, Chile
| | - Denisse Sepúlveda
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, University of Chile, Santiago, Chile
| | - Diego Rojas-Rivera
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, University of Chile, Santiago, Chile
| | - Claudio Hetz
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, University of Chile, Santiago, Chile
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts; and
- Neurounion Biomedical Foundation, CENPAR, Santiago, Chile
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Pluquet O, Dejeans N, Chevet E. Watching the clock: endoplasmic reticulum-mediated control of circadian rhythms in cancer. Ann Med 2014; 46:233-43. [PMID: 24491143 DOI: 10.3109/07853890.2013.874664] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In the past 20 years both the circadian clock and endoplasmic reticulum (ER) stress signaling have emerged as major players in oncogenesis and cancer development. Although several lines of evidence have established functional links between these two molecular pathways, their interconnection and the subsequent functional implications in cancer development remain to be fully characterized. Herein, we provide an extensive review of the literature depicting the molecular connectivity linking ER stress signaling and the circadian clock and elaborate on the potential use of these functional interactions in cancer therapeutics.
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Affiliation(s)
- Olivier Pluquet
- Institut de Biologie de Lille, CNRS UMR8161/Universités Lille 1 et Lille 2/Institut Pasteur de Lille , 1, rue du Pr. Calmette, BP 447, 59021 Lille , France
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35
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Maurel M, Chevet E, Tavernier J, Gerlo S. Getting RIDD of RNA: IRE1 in cell fate regulation. Trends Biochem Sci 2014; 39:245-54. [PMID: 24657016 DOI: 10.1016/j.tibs.2014.02.008] [Citation(s) in RCA: 416] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 02/20/2014] [Accepted: 02/21/2014] [Indexed: 12/12/2022]
Abstract
Inositol-requiring enzyme 1 (IRE1) is the most conserved transducer of the unfolded protein response (UPR), a homeostatic response that preserves proteostasis. Intriguingly, via its endoribonuclease activity, IRE1 produces either adaptive or death signals. This occurs through both unconventional splicing of XBP1 mRNA and regulated IRE1-dependent decay of mRNA (RIDD). Whereas XBP1 mRNA splicing is cytoprotective in response to endoplasmic reticulum (ER) stress, RIDD has revealed many unexpected features. For instance, RIDD cleaves RNA at an XBP1-like consensus site but with an activity divergent from XBP1 mRNA splicing and can either preserve ER homeostasis or induce cell death. Here we review recent findings on RIDD and propose a model of how IRE1 RNase activity might control cell fate decisions.
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Affiliation(s)
- M Maurel
- Department of Medical Protein Research, VIB, Ghent, Belgium; Department of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium.
| | - E Chevet
- INSERM U1053, Université Bordeaux Segalen, 33000 Bordeaux, France; Centre Régional de Lutte Contre le Cancer Eugène Marquis, 35000 Rennes, France
| | - J Tavernier
- Department of Medical Protein Research, VIB, Ghent, Belgium; Department of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - S Gerlo
- Department of Medical Protein Research, VIB, Ghent, Belgium; Department of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium.
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36
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Ibrahim SA, Hassan H, Götte M. MicroRNA-dependent targeting of the extracellular matrix as a mechanism of regulating cell behavior. Biochim Biophys Acta Gen Subj 2014; 1840:2609-20. [PMID: 24462576 DOI: 10.1016/j.bbagen.2014.01.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/13/2014] [Accepted: 01/15/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND MicroRNAs are small noncoding RNAs which regulate gene expression at the posttranscriptional level by inducing mRNA degradation or translational repression. MicroRNA-dependent modulation of the extracellular matrix and its cellular receptors has emerged as a novel mechanism of regulating numerous matrix-dependent processes, including cell proliferation and apoptosis, cell adhesion and migration, cell differentiation and stem cell properties. SCOPE OF REVIEW In this review, we will present different mechanisms by which microRNAs and extracellular matrix constituents mutually regulate their expression, and we will demonstrate how these expression changes affect cell behavior. We will also highlight the importance of dysregulated matrix-related microRNA expression for the pathogenesis of inflammatory and malignant disease, and discuss the potential for diagnostic and therapeutic applications. MAJOR CONCLUSIONS MicroRNAs and matrix-dependent signal transduction processes form novel regulatory circuits, which profoundly affect cell behavior. As misexpression of microRNAs targeting extracellular matrix constituents is observed in a variety of diseases, a pharmacological intervention with these processes has therapeutic potential, as successfully demonstrated in vitro and in advanced animal models. However, a deeper mechanistic understanding is required to address potential side effects prior to clinical applications in humans. GENERAL SIGNIFICANCE A full understanding of the role and function of microRNA-dependent regulation of the extracellular matrix may lead to new targeted therapies and new diagnostics for malignant and inflammatory diseases in humans. This article is part of a Special Issue entitled Matrix-mediated cell behaviour and properties.
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Affiliation(s)
| | - Hebatallah Hassan
- Department of Zoology, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Martin Götte
- Department of Gynecology and Obstetrics, Münster University Hospital, Albert-Schweitzer-Campus 1, D11, 48149 Münster, Germany.
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37
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Arensdorf AM, Diedrichs D, Rutkowski DT. Regulation of the transcriptome by ER stress: non-canonical mechanisms and physiological consequences. Front Genet 2013; 4:256. [PMID: 24348511 PMCID: PMC3844873 DOI: 10.3389/fgene.2013.00256] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 11/08/2013] [Indexed: 12/29/2022] Open
Abstract
The mammalian unfolded protein response (UPR) is propagated by three ER-resident transmembrane proteins, each of which initiates a signaling cascade that ultimately culminates in production of a transcriptional activator. The UPR was originally characterized as a pathway for upregulating ER chaperones, and a comprehensive body of subsequent work has shown that protein synthesis, folding, oxidation, trafficking, and degradation are all transcriptionally enhanced by the UPR. However, the global reach of the UPR extends to genes involved in diverse physiological processes having seemingly little to do with ER protein folding, and this includes a substantial number of mRNAs that are suppressed by stress rather than stimulated. Through multiple non-canonical mechanisms emanating from each of the UPR pathways, the cell dynamically regulates transcription and mRNA degradation. Here we highlight these mechanisms and their increasingly appreciated impact on physiological processes.
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Affiliation(s)
- Angela M Arensdorf
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine Iowa City, IA, USA
| | - Danilo Diedrichs
- Department of Mathematics and Computer Science, Wheaton College Wheaton, IL, USA
| | - D Thomas Rutkowski
- Department of Anatomy and Cell Biology, University of Iowa Carver College of Medicine Iowa City, IA, USA ; Department of Internal Medicine, University of Iowa Carver College of Medicine Iowa City, IA, USA
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Regulation of the unfolded protein response by microRNAs. Cell Mol Biol Lett 2013; 18:555-78. [PMID: 24092331 PMCID: PMC3877167 DOI: 10.2478/s11658-013-0106-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 09/19/2013] [Indexed: 12/24/2022] Open
Abstract
The unfolded protein response (UPR) is an adaptive response to the stress that is caused by an accumulation of misfolded proteins in the lumen of the endoplasmic reticulum (ER). It is an important component of cellular homeostasis. During ER stress, the UPR increases the protein-folding capacity of the endoplasmic reticulum to relieve the stress. Failure to recover leads to apoptosis. Specific cellular mechanisms are required for the cellular recovery phase after UPR activation. Using bioinformatics tools, we identified a number of microRNAs that are predicted to decrease the mRNA expression levels for a number of critical components of the UPR. In this review, we discuss the potential role of microRNAs as key regulators of this pathway and describe how microRNAs may play an essential role in turning off the UPR after the stress has subsided.
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39
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Hetz C, Chevet E, Harding HP. Targeting the unfolded protein response in disease. Nat Rev Drug Discov 2013; 12:703-19. [DOI: 10.1038/nrd3976] [Citation(s) in RCA: 683] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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40
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Urra H, Dufey E, Lisbona F, Rojas-Rivera D, Hetz C. When ER stress reaches a dead end. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:3507-3517. [PMID: 23988738 DOI: 10.1016/j.bbamcr.2013.07.024] [Citation(s) in RCA: 325] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 07/25/2013] [Accepted: 07/30/2013] [Indexed: 02/06/2023]
Abstract
Endoplasmic reticulum (ER) stress is a common feature of several physiological and pathological conditions affecting the function of the secretory pathway. To restore ER homeostasis, an orchestrated signaling pathway is engaged that is known as the unfolded protein response (UPR). The UPR has a primary function in stress adaptation and cell survival; however, under irreversible ER stress a switch to pro-apoptotic signaling events induces apoptosis of damaged cells. The mechanisms that initiate ER stress-dependent apoptosis are not fully understood. Several pathways have been described where we highlight the participation of the BCL-2 family of proteins and ER calcium release. In addition, recent findings also suggest that microRNAs and oxidative stress are relevant players on the transition from adaptive to cell death programs. Here we provide a global and integrated overview of the signaling networks that may determine the elimination of a cell under chronic ER stress. This article is part of a Special Section entitled: Cell Death Pathways.
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Affiliation(s)
- Hery Urra
- Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, Santiago, Chile; Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Estefanie Dufey
- Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, Santiago, Chile; Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Fernanda Lisbona
- Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, Santiago, Chile; Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Diego Rojas-Rivera
- Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, Santiago, Chile; Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Claudio Hetz
- Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, Santiago, Chile; Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA 02115, USA; Neurounion Biomedical Foundation, Santiago, Chile.
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Maurel M, Chevet E. Endoplasmic reticulum stress signaling: the microRNA connection. Am J Physiol Cell Physiol 2013; 304:C1117-26. [DOI: 10.1152/ajpcell.00061.2013] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The endoplasmic reticulum (ER)-induced unfolded protein response (ERUPR) is an adaptive mechanism that is activated upon accumulation of misfolded proteins in the ER and aims at restoring ER homeostasis. The ERUPR is transduced by three major ER-resident stress sensors, namely PKR-like endoplasmic reticulum kinase (PERK), activating transcription factor 6 (ATF6), and inositol requiring enzyme 1 (IRE1). Activation of these ER stress sensors leads to transcriptional reprogramming of the cells. Recently, microRNAs (miRNAs), small noncoding RNAs that generally repress gene expression, have emerged as key regulators of ER homeostasis and important players in ERUPR-dependent signaling. Moreover, the miRNAs biogenesis machinery appears to also be regulated upon ER stress. Herein we extensively review the relationships existing between “canonical” ERUPR signaling, control of ER homeostasis, and miRNAs. We reveal an intricate signaling network that might confer specificity and selectivity to the ERUPR in tissue- or stress-dependent fashion. We discuss these issues in the context of the physiological and pathophysiological roles of ERUPR signaling.
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Affiliation(s)
- Marion Maurel
- INSERM U1053, Bordeaux, France; and
- Université Bordeaux-Segalen, Bordeaux, France
| | - Eric Chevet
- INSERM U1053, Bordeaux, France; and
- Université Bordeaux-Segalen, Bordeaux, France
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