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Zhao J, Qiu C, Wan R, Wang Q, Zhang Y, Yang D, Yang Y, Sun X. Inhibition of CIRBP represses the proliferation and migration of vascular smooth muscle cells via inhibiting Rheb/mTORC1 axis. Biochem Biophys Res Commun 2024; 725:150248. [PMID: 38870847 DOI: 10.1016/j.bbrc.2024.150248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 06/09/2024] [Indexed: 06/15/2024]
Abstract
The excessive migration and proliferation of vascular smooth muscle cells (VSMCs) plays a vital role in vascular intimal hyperplasia. CIRBP is involved in the proliferation of various cancer cells. This study was aimed to explore the role of CIRBP in the proliferation and migration of VSMCs. Adenovirus was used to interfere with cold-inducible RNA-binding protein (CIRBP) expression, while lentivirus was used to overexpress Ras homolog enriched in brain (Rheb). Western blotting and qRT-PCR were used to evaluate the expression of CIRBP, Rheb, and mechanistic target of rapamycin complex 1 (mTORC1) activity. The cell proliferation was determined by Ki67 immunofluorescence staining and CCK-8 assay. The wound healing assay was performed to assess cell migration. Additionally, immunohistochemistry was conducted to explore the role of CIRBP in intimal hyperplasia after vascular injury. We found that silencing CIRBP inhibited the proliferation and migration of VSMCs, decreased the expression of Rheb and mTORC1 activity. Restoration of mTORC1 activity via insulin or overexpression of Rheb via lentiviral transfection both attenuated the inhibitory effects of silencing CIRBP on the proliferation and migration of VSMCs. Moreover, Rheb overexpression abolished the inhibitory effect of silencing CIRBP on mTORC1 activity in VSMCs. CIRBP was upregulated in the injured carotid artery. Silencing CIRBP ameliorated intimal hyperplasia after vascular injury. In the summary, silencing CIRBP attenuates mTORC1 activity via reducing Rheb expression, thereby supressing the proliferation and migration of VSMCs and intimal hyperplasia after vascular injury.
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MESH Headings
- Mechanistic Target of Rapamycin Complex 1/metabolism
- Ras Homolog Enriched in Brain Protein/metabolism
- Ras Homolog Enriched in Brain Protein/genetics
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/pathology
- Cell Proliferation
- Cell Movement
- Animals
- RNA-Binding Proteins/metabolism
- RNA-Binding Proteins/genetics
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Myocytes, Smooth Muscle/cytology
- Cells, Cultured
- Signal Transduction
- Male
- Rats
- Rats, Sprague-Dawley
- Humans
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Affiliation(s)
- Jiaqi Zhao
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Chenming Qiu
- Department of Burn, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Rong Wan
- Department of Burn, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Qiang Wang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Yan Zhang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Dachun Yang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Yongjian Yang
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China.
| | - Xiongshan Sun
- Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, 610083, China.
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2
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Lujan DA, Ochoa JL, Beswick EJ, Howard TA, Hathaway HJ, Perrone-Bizzozero NI, Hartley RS. Cold-Inducible RNA Binding Protein Impedes Breast Tumor Growth in the PyMT Murine Model for Breast Cancer. Biomedicines 2024; 12:340. [PMID: 38397942 PMCID: PMC10886683 DOI: 10.3390/biomedicines12020340] [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: 12/15/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
RNA binding proteins (RBPs) post-transcriptionally regulate gene expression by associating with regulatory sequences in the untranslated regions of mRNAs. Cold-inducible RBP (CIRP) is a stress-induced RBP that was recently shown to modulate inflammation in response to cellular stress, where it increases or decreases pro-tumorigenic (proinflammatory) cytokines in different contexts. CIRP expression is altered in several cancers, including breast cancer, but the effects of CIRP on inflammation in breast cancer is not known. Here, we investigate if CIRP alters growth and the inflammatory profile of breast tumors. Transgenic mice overexpressing CIRP in the mammary epithelium were crossed with the PyMT mouse model of breast cancer, and the effects on both early and late tumorigenesis and inflammation were assessed. The effects of CIRP knockdown were also assessed in Py2T cell grafts. Overexpression of CIRP led to decreased tumorigenesis in the PyMT mouse model. Conversely, the knockdown of CIRP in Py2T cell grafts led to increased tumor growth. Luminex cytokine assays assessed the effects on the inflammatory environment. CIRP/PyMT mammary glands/mammary tumors and serum had decreased cytokines that promote inflammation, angiogenesis, and metastasis compared to PyMT mammary glands and serum, documenting a shift towards an environment less supportive of tumorigenesis. CIRP overexpression also decreased CD4+ helper T cells and increased CD8+ cytotoxic T cells in mammary tumors. Overall, these data support a role for CIRP as a potent antitumor molecule that suppresses both local and systemic pro-tumorigenic inflammation.
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Affiliation(s)
- Daniel A. Lujan
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; (D.A.L.); (J.L.O.); (T.A.H.); (H.J.H.)
| | - Joey L. Ochoa
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; (D.A.L.); (J.L.O.); (T.A.H.); (H.J.H.)
| | - Ellen J. Beswick
- Department of Internal Medicine, University of Kentucky College of Medicine, Lexington, KY 40506, USA;
| | - Tamara A. Howard
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; (D.A.L.); (J.L.O.); (T.A.H.); (H.J.H.)
| | - Helen J. Hathaway
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; (D.A.L.); (J.L.O.); (T.A.H.); (H.J.H.)
| | - Nora I. Perrone-Bizzozero
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA;
| | - Rebecca S. Hartley
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA; (D.A.L.); (J.L.O.); (T.A.H.); (H.J.H.)
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3
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Coburn KM, Roth B, Varney KM, Carrier F, Weber DJ. 1H, 13C, and 15N assignments of the mRNA binding protein hnRNP A18. BIOMOLECULAR NMR ASSIGNMENTS 2023; 17:37-41. [PMID: 36539586 DOI: 10.1007/s12104-022-10117-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/08/2022] [Indexed: 06/02/2023]
Abstract
Heterogeneous ribonuclear protein A18 (hnRNP A18) is an RNA binding protein (RBP) involved in the hypoxic cellular stress response and regulation of cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) expression in melanoma, breast cancer, prostate cancer, and colon cancer solid tumors. hnRNP A18 is comprised of an N-terminal structured RNA recognition motif (RMM) and a C-terminal intrinsically disordered domain (IDD). Upon cellar stressors, such as UV and hypoxia, hnRNP A18 is phosphorylated by casein kinase 2 (CK2) and glycogen synthase kinase 3β (GSK-3β). After phosphorylation, hnRNP A18 translocates from the nucleus to the cytosol where it interacts with pro-survival mRNA transcripts for proteins such as hypoxia inducible factor 1α and CTLA-4. Both the hypoxic cellular response and modulation of immune checkpoints by cancer cells promote chemoradiation resistance and metastasis. In this study, the 1 H, 13 C, and 15 N backbone and sidechain resonances of the 172 amino acid hnRNP A18 were assigned sequence-specifically and provide a framework for future NMR-based drug discovery studies toward targeting hnRNP A18. These data will also enable the investigation of the dynamic structural changes within the IDD of hnRNP A18 upon phosphorylation by CK2 and GSK-3β to provide critical insight into the structure and function of IDDs.
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Affiliation(s)
- Katherine M Coburn
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, 21201, Baltimore, MD, USA
| | - Braden Roth
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, 21201, Baltimore, MD, USA
| | - Kristen M Varney
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, 21201, Baltimore, MD, USA
- Center for Biomolecular Therapeutics (CBT), Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene St, 21201, Baltimore Maryland, USA
| | - France Carrier
- Department of Radiation Oncology, University of Maryland School of Medicine, 655 West Baltimore, Street, 21201, Baltimore, MD, USA
- University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, 21201, Baltimore, MD, USA
| | - David J Weber
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, 21201, Baltimore, MD, USA.
- University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, 21201, Baltimore, MD, USA.
- Center for Biomolecular Therapeutics (CBT), Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene St, 21201, Baltimore Maryland, USA.
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4
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Kremer V, Stanicek L, van Ingen E, Bink DI, Hilderink S, Tijsen AJ, Wittig I, Mägdefessel L, Nossent AY, Boon RA. Long non-coding RNA MEG8 induces endothelial barrier through regulation of microRNA-370 and -494 processing. J Cell Sci 2022; 135:275515. [PMID: 35611612 PMCID: PMC9270956 DOI: 10.1242/jcs.259671] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 05/15/2022] [Indexed: 11/20/2022] Open
Abstract
The 14q32 locus is an imprinted region in the human genome which contains multiple non-coding RNAs. We investigated the role of Maternally Expressed Gene 8 (MEG8) in endothelial function and the underlying mechanism. A 5-fold increase in MEG8 was observed with increased passage number in Human Umbilical Vein Endothelial Cells, suggesting MEG8 is induced during aging. MEG8 knockdown resulted in a 1.8-fold increase in senescence, suggesting MEG8 might be protective during aging. Endothelial barrier was impaired after MEG8 silencing. MEG8 knockdown resulted in reduced expression of miRNA-370 and -494 but not -127, -487b and -410. Overexpression of miRNA-370/-494 partially rescued MEG8-silencing-induced barrier loss. Mechanistically, MEG8 regulates expression of miRNA-370 and -494 at the mature miRNA level through interaction with RNA binding proteins Cold Inducible RNA Binding Protein (CIRBP) and Hydroxyacyl-CoA Dehydrogenase Trifunctional Multi-enzyme Complex Subunit Beta (HADHB). Precursor and mature miRNA-370/-494 were shown to interact with HADHB and CIRBP respectively. CIRBP/HADHB silencing resulted in downregulation of miRNA-370 and induction of miRNA-494. These results suggest MEG8 interacts with CIRBP and HADHB and contributes to miRNA processing at the post-transcriptional level.
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Affiliation(s)
- Veerle Kremer
- Amsterdam UMC location Vrije Universiteit, Amsterdam, Department of Physiology, De Boelelaan 1117, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands.,Amsterdam UMC location University of Amsterdam, Department of Medical Chemistry, Meibergdreef 9, Amsterdam, the Netherlands
| | - Laura Stanicek
- Amsterdam UMC location Vrije Universiteit, Amsterdam, Department of Physiology, De Boelelaan 1117, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands.,German Center for Cardiovascular research (DZHK), partner site Munich Heart Alliance, Germany
| | - Eva van Ingen
- Department of Surgery and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, the Netherlands
| | - Diewertje I Bink
- Amsterdam UMC location Vrije Universiteit, Amsterdam, Department of Physiology, De Boelelaan 1117, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands
| | - Sarah Hilderink
- Amsterdam UMC location Vrije Universiteit, Amsterdam, Department of Physiology, De Boelelaan 1117, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands
| | - Anke J Tijsen
- Amsterdam Cardiovascular Sciences, Heart Failure & Arrhythmias, Amsterdam, the Netherlands.,Amsterdam UMC location University of Amsterdam, Department of Experimental Cardiology, Meibergdreef 9, Amsterdam, the Netherlands
| | - Ilka Wittig
- Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine, Goethe University, Frankfurt am Main, Germany.,German Centre for Cardiovascular Research DZHK, Partner site Frankfurt Rhein/Main, Frankfurt am Main, Germany
| | - Lars Mägdefessel
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany.,Department of Medicine, Molecular Vascular Medicine Unit, Karolinska Institute, Stockholm, Sweden.,German Center for Cardiovascular research (DZHK), partner site Munich Heart Alliance, Germany
| | - Anne Yaël Nossent
- Department of Surgery and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, the Netherlands.,Departments of Laboratory Medicine and Internal Medicine II, Medical University of Vienna, Austria
| | - Reinier A Boon
- Amsterdam UMC location Vrije Universiteit, Amsterdam, Department of Physiology, De Boelelaan 1117, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands.,Institute of Cardiovascular Regeneration, Goethe University, Frankfurt am Main, Germany.,German Centre for Cardiovascular Research DZHK, Partner site Frankfurt Rhein/Main, Frankfurt am Main, Germany
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5
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Zhong P, Zhou M, Zhang J, Peng J, Zeng G, Huang H. The role of Cold-Inducible RNA-binding protein in respiratory diseases. J Cell Mol Med 2021; 26:957-965. [PMID: 34953031 PMCID: PMC8831972 DOI: 10.1111/jcmm.17142] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/25/2021] [Accepted: 12/09/2021] [Indexed: 12/28/2022] Open
Abstract
Cold‐inducible RNA‐binding protein (CIRP) is a stress‐response protein that is expressed in various types of cells and acts as an RNA chaperone, modifying the stability of its targeted mRNA. Intracellular CIRP could also be released into extracellular space and once released, extracellular CIRP (eCIRP) acts as a damage‐associated molecular pattern (DAMP) to induce and amplify inflammation. Recent studies have found that eCIRP could promote acute lung injury (ALI) via activation of macrophages, neutrophils, pneumocytes and lung vascular endothelial cells in context of sepsis, haemorrhagic shock, intestinal ischemia/reperfusion injury and severe acute pancreatitis. In addition, CIRP is also highly expressed in the bronchial epithelial cells and its expression is upregulated in the bronchial epithelial cells of patients with chronic obstructive pulmonary diseases (COPD) and rat models with chronic bronchitis. CIRP is a key contributing factor in the cold‐induced exacerbation of COPD by promoting the expression of inflammatory genes and hypersecretion of airway mucus in the bronchial epithelial cells. Besides, CIRP is also involved in regulating pulmonary fibrosis, as eCIRP could directly activate and induce an inflammatory phenotype in pulmonary fibroblast. This review summarizes the findings of CIRP investigation in respiratory diseases and the underlying molecular mechanisms.
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Affiliation(s)
- Peng Zhong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Miao Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jingjing Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Jianye Peng
- The Second Affiliated Hospital, Department of Cardiovascular Medicine, Hengyang Medical School, University of South China, Hengyang, Hunan, China.,Key Laboratory of Heart Failure Prevention & Treatment of Hengyang, Hengyang, Hunan, China.,Clinical Medicine Research Center of Arteriosclerotic Disease of Hunan Province, Hengyang, Hunan, China
| | - Gaofeng Zeng
- The Second Affiliated Hospital, Department of Cardiovascular Medicine, Hengyang Medical School, University of South China, Hengyang, Hunan, China.,Key Laboratory of Heart Failure Prevention & Treatment of Hengyang, Hengyang, Hunan, China.,Clinical Medicine Research Center of Arteriosclerotic Disease of Hunan Province, Hengyang, Hunan, China
| | - He Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
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6
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Bárcena B, Salamanca A, Pintado C, Mazuecos L, Villar M, Moltó E, Bonzón-Kulichenko E, Vázquez J, Andrés A, Gallardo N. Aging Induces Hepatic Oxidative Stress and Nuclear Proteomic Remodeling in Liver from Wistar Rats. Antioxidants (Basel) 2021; 10:antiox10101535. [PMID: 34679670 PMCID: PMC8533122 DOI: 10.3390/antiox10101535] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 12/13/2022] Open
Abstract
Aging is a continuous, universal, and irreversible process that determines progressive loss of adaptability. The liver is a critical organ that supports digestion, metabolism, immunity, detoxification, vitamin storage, and hormone signaling. Nevertheless, the relationship between aging and the development of liver diseases remains elusive. In fact, although prolonged fasting in adult rodents and humans delays the onset of the disease and increases longevity, whether prolonged fasting could exert adverse effects in old organisms remains incompletely understood. In this work, we aimed to characterize the oxidative stress and nuclear proteome in the liver of 3-month- and 24-month-old male Wistar rats upon 36 h of fasting and its adaptation in response to 30 min of refeeding. To this end, we analyzed the hepatic lipid peroxidation levels (TBARS) and the expression levels of genes associated with fat metabolism and oxidative stress during aging. In addition, to gain a better insight into the molecular and cellular processes that characterize the liver of old rats, the hepatic nuclear proteome was also evaluated by isobaric tag quantitation (iTRAQ) mass spectrometry-based proteomics. In old rats, aging combined with prolonged fasting had great impact on lipid peroxidation in the liver that was associated with a marked downregulation of antioxidant genes (Sod2, Fmo3, and Cyp2C11) compared to young rats. Besides, our proteomic study revealed that RNA splicing is the hepatic nuclear biological process markedly affected by aging and this modification persists upon refeeding. Our results suggest that aged-induced changes in the nuclear proteome could affect processes associated with the adaptative response to refeeding after prolonged fasting, such as those involved in the defense against oxidative stress.
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Affiliation(s)
- Brenda Bárcena
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Aurora Salamanca
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Cristina Pintado
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain; (C.P.); (E.M.)
| | - Lorena Mazuecos
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Margarita Villar
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain
- Correspondence: (M.V.); (N.G.)
| | - Eduardo Moltó
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain; (C.P.); (E.M.)
| | - Elena Bonzón-Kulichenko
- Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III and CIBER de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain; (E.B.-K.); (J.V.)
| | - Jesús Vázquez
- Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III and CIBER de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain; (E.B.-K.); (J.V.)
| | - Antonio Andrés
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Nilda Gallardo
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
- Correspondence: (M.V.); (N.G.)
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7
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Kim YM, Hong S. Controversial roles of cold‑inducible RNA‑binding protein in human cancer (Review). Int J Oncol 2021; 59:91. [PMID: 34558638 DOI: 10.3892/ijo.2021.5271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/06/2021] [Indexed: 11/05/2022] Open
Abstract
Cold‑inducible RNA‑binding protein (CIRBP) is a cold‑shock protein comprised of an RNA‑binding motif that is induced by several stressors, such as cold shock, UV radiation, nutrient deprivation, reactive oxygen species and hypoxia. CIRBP can modulate post‑transcriptional regulation of target mRNA, which is required to control DNA repair, circadian rhythms, cell growth, telomere integrity and cardiac physiology. In addition, the crucial function of CIRBP in various human diseases, including cancers and inflammatory disease, has been reported. Although CIRBP is primarily considered to be an oncogene, it may also serve a role in tumor suppression. In the present study, the controversial roles of CIRBP in various human cancers is summarized, with a focus on the interconnectivity between CIRBP and its target mRNAs involved in tumorigenesis. CIRBP may represent an important prognostic marker and therapeutic target for cancer therapy.
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Affiliation(s)
- Young-Mi Kim
- Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology, Gachon University, Incheon 21999, Republic of Korea
| | - Suntaek Hong
- Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology, Gachon University, Incheon 21999, Republic of Korea
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8
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Duan X, Cheng X, Yin X, Ke Z, Song J. Systematic analysis of the function and prognostic value of RNA binding protein in head and neck squamous cell carcinoma. Eur Arch Otorhinolaryngol 2021; 279:1535-1547. [PMID: 34218307 DOI: 10.1007/s00405-021-06929-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 06/01/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Dysregulation of RNA binding proteins (RBPs) plays an important role in controlling processes in cancer development. However, the function of RBPs has not been thoroughly and systematically documented in head and neck cancer. We aim to explore the role of RPB in the pathogenesis of HNSC. METHODS We obtained HNSC gene expression data and corresponding clinical information from The Cancer Genome Atlas (TCGA) and the GEO databases, and identified aberrantly expressed RBPs between tumors and normal tissues. Meanwhile, we performed a series of bioinformatics to explore the function and prognostic value of these RBPs. RESULTS A total of 249 abnormally expressed RBPs were identified, including 101 downregulated RBPs and 148 upregulated RBPs. Using least absolute shrinkage and selection operator (LASSO) and univariate Cox regression analysis, the 15 RPBs were identified as hub genes. With the 15 RPBS, the prognostic prediction model was constructed. Further analysis showed that the high-risk score of the patients expressed a better survival outcome. The prediction model was validated in another HNSC dataset, and similar findings were observed. CONCLUSIONS Our results provide novel insights into the pathogenesis of HNSC. The fifteen RBP gene signature exhibited the predictive value of moderate HNSC prognosis, and have potential application value in clinical decision-making and individualized treatment.
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Affiliation(s)
- Xiaofeng Duan
- Department of Oral and Maxillofacial Surgery, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Xianlin Cheng
- Department of Oral and Maxillofacial Surgery, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Xinhai Yin
- Department of Oral and Maxillofacial Surgery, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Zhao Ke
- Department of Oral and Maxillofacial Surgery, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Jukun Song
- Department of Oral and Maxillofacial Surgery, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China.
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9
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Absence of Cold-Inducible RNA-Binding Protein (CIRP) Promotes Angiogenesis and Regeneration of Ischemic Tissue by Inducing M2-Like Macrophage Polarization. Biomedicines 2021; 9:biomedicines9040395. [PMID: 33916904 PMCID: PMC8067566 DOI: 10.3390/biomedicines9040395] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/31/2021] [Accepted: 04/04/2021] [Indexed: 12/19/2022] Open
Abstract
Cold-inducible RNA-binding protein (CIRP) is an intracellular RNA-chaperone and extracellular promoter of inflammation, which is increasingly expressed and released under conditions of hypoxia and cold stress. The functional relevance of CIRP for angiogenesis and regeneration of ischemic muscle tissue has never been investigated and is the topic of the present study. We investigated the role of CIRP employing CIRP deficient mice along with a hindlimb model of ischemia-induced angiogenesis. 1 and 7 days after femoral artery ligation or sham operation, gastrocnemius muscles of CIRP-deficient and wildtype mice were isolated and processed for (immuno-) histological analyses. CIRP deficient mice showed decreased ischemic tissue damage as evidenced by Hematoxylin and Eosin staining, whereas angiogenesis was enhanced as demonstrated by increased capillary/muscle fiber ratio and number of proliferating endothelial (CD31+/BrdU+) cells on day 7 after surgery. Moreover, CIRP deficiency resulted in a reduction of total leukocyte count (CD45+), neutrophils (myeloperoxidase, MPO+), neutrophil extracellular traps (NETs) (MPO+/CitH3+), and inflammatory M1-like polarized macrophages (CD68+/MRC1-), whereas the number of tissue regenerating M2-like polarized macrophages (CD68+/MRC1-) was increased in ischemic tissue samples. In summary, we show that the absence of CIRP ameliorates angiogenesis and regeneration of ischemic muscle tissue, most likely by influencing macrophage polarization in direction to regenerative M2-like macrophages.
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10
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Solano-Gonzalez E, Coburn KM, Yu W, Wilson GM, Nurmemmedov E, Kesari S, Chang ET, MacKerell AD, Weber DJ, Carrier F. Small molecules inhibitors of the heterogeneous ribonuclear protein A18 (hnRNP A18): a regulator of protein translation and an immune checkpoint. Nucleic Acids Res 2021; 49:1235-1246. [PMID: 33398344 PMCID: PMC7897483 DOI: 10.1093/nar/gkaa1254] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 12/01/2022] Open
Abstract
We have identified chemical probes that simultaneously inhibit cancer cell progression and an immune checkpoint. Using the computational Site Identification by Ligand Competitive Saturation (SILCS) technology, structural biology and cell-based assays, we identify small molecules that directly and selectively bind to the RNA Recognition Motif (RRM) of hnRNP A18, a regulator of protein translation in cancer cells. hnRNP A18 recognizes a specific RNA signature motif in the 3′UTR of transcripts associated with cancer cell progression (Trx, VEGF, RPA) and, as shown here, a tumor immune checkpoint (CTLA-4). Post-transcriptional regulation of immune checkpoints is a potential therapeutic strategy that remains to be exploited. The probes target hnRNP A18 RRM in vitro and in cells as evaluated by cellular target engagement. As single agents, the probes specifically disrupt hnRNP A18–RNA interactions, downregulate Trx and CTLA-4 protein levels and inhibit proliferation of several cancer cell lines without affecting the viability of normal epithelial cells. These first-in-class chemical probes will greatly facilitate the elucidation of the underexplored biological function of RNA Binding Proteins (RBPs) in cancer cells, including their effects on proliferation and immune checkpoint activation.
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Affiliation(s)
- Eduardo Solano-Gonzalez
- University of Maryland, Baltimore, School of Medicine, Department of Radiation Oncology, 655 West Baltimore, Street, Baltimore, MD 21201, USA
| | - Katherine M Coburn
- University of Maryland, Baltimore, School of Medicine, Department of Biochemistry and Molecular Biology, 108 N. Greene Street, Baltimore, MD 21201, USA
| | - Wenbo Yu
- Computer-Aided Drug Design Center, Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, 20 Penn Street, Baltimore MD 21201, USA.,Center for Biomolecular Therapeutics (CBT), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Gerald M Wilson
- University of Maryland, Baltimore, School of Medicine, Department of Biochemistry and Molecular Biology, 108 N. Greene Street, Baltimore, MD 21201, USA
| | - Elmar Nurmemmedov
- John Wayne Cancer Institute, 2200 Santa Monica Blvd, Santa Monica, CA 90404, USA
| | - Santosh Kesari
- John Wayne Cancer Institute, 2200 Santa Monica Blvd, Santa Monica, CA 90404, USA
| | - Elizabeth T Chang
- University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD 21201, USA
| | - Alexander D MacKerell
- Computer-Aided Drug Design Center, Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, 20 Penn Street, Baltimore MD 21201, USA.,Center for Biomolecular Therapeutics (CBT), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - David J Weber
- University of Maryland, Baltimore, School of Medicine, Department of Biochemistry and Molecular Biology, 108 N. Greene Street, Baltimore, MD 21201, USA.,University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD 21201, USA.,Center for Biomolecular Therapeutics (CBT), University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - France Carrier
- University of Maryland, Baltimore, School of Medicine, Department of Radiation Oncology, 655 West Baltimore, Street, Baltimore, MD 21201, USA.,University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD 21201, USA
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11
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Zhong P, Peng J, Bian Z, Huang H. The Role of Cold Inducible RNA-Binding Protein in Cardiac Physiology and Diseases. Front Pharmacol 2021; 12:610792. [PMID: 33716740 PMCID: PMC7943917 DOI: 10.3389/fphar.2021.610792] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/11/2021] [Indexed: 12/23/2022] Open
Abstract
Cold-inducible RNA-binding protein (CIRP) is an intracellular stress-response protein that can respond to various stress conditions by changing its expression and regulating mRNA stability. As an RNA-binding protein, CIRP modulates gene expression at the post-transcriptional level, including those genes involved in DNA repair, cellular redox metabolism, circadian rhythms, telomere maintenance, and cell survival. CIRP is expressed in a large variety of tissues, including testis, brain, lung, kidney, liver, stomach, bone marrow, and heart. Recent studies have observed the important role of CIRP in cardiac physiology and diseases. CIRP regulates cardiac electrophysiological properties such as the repolarization of cardiomyocytes, the susceptibility of atrial fibrillation, and the function of the sinoatrial node in response to stress. CIRP has also been suggested to protect cardiomyocytes from apoptosis under various stress conditions, including heart failure, high glucose conditions, as well as during extended heart preservation under hypothermic conditions. This review summarizes the findings of CIRP investigations in cardiac physiology and diseases and the underlying molecular mechanism.
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Affiliation(s)
- Peng Zhong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Jianye Peng
- Department of Cardiovascular Medicine, The second Affiliated Hospital of University of South China, Hengyang, China
| | - Zhouyan Bian
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - He Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
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12
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Zhang Y, Liu L, Qiu Q, Zhou Q, Ding J, Lu Y, Liu P. Alternative polyadenylation: methods, mechanism, function, and role in cancer. J Exp Clin Cancer Res 2021; 40:51. [PMID: 33526057 PMCID: PMC7852185 DOI: 10.1186/s13046-021-01852-7] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 01/20/2021] [Indexed: 12/12/2022] Open
Abstract
Occurring in over 60% of human genes, alternative polyadenylation (APA) results in numerous transcripts with differing 3'ends, thus greatly expanding the diversity of mRNAs and of proteins derived from a single gene. As a key molecular mechanism, APA is involved in various gene regulation steps including mRNA maturation, mRNA stability, cellular RNA decay, and protein diversification. APA is frequently dysregulated in cancers leading to changes in oncogenes and tumor suppressor gene expressions. Recent studies have revealed various APA regulatory mechanisms that promote the development and progression of a number of human diseases, including cancer. Here, we provide an overview of four types of APA and their impacts on gene regulation. We focus particularly on the interaction of APA with microRNAs, RNA binding proteins and other related factors, the core pre-mRNA 3'end processing complex, and 3'UTR length change. We also describe next-generation sequencing methods and computational tools for use in poly(A) signal detection and APA repositories and databases. Finally, we summarize the current understanding of APA in cancer and provide our vision for future APA related research.
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Affiliation(s)
- Yi Zhang
- Department of Respiratory Medicine, Sir Run Run Shaw Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang, China
| | - Lian Liu
- Department of Respiratory Medicine, Sir Run Run Shaw Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang, China
| | - Qiongzi Qiu
- Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Women's Reproductive Health Key Laboratory of Zhejiang Province, Department of Gynecologic Oncology, Women's Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China
| | - Qing Zhou
- Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Women's Reproductive Health Key Laboratory of Zhejiang Province, Department of Gynecologic Oncology, Women's Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China
| | - Jinwang Ding
- Department of Head and Neck Surgery, Cancer Hospital of the University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Key Laboratory of Head & Neck Cancer Translational Research of Zhejiang Province, Hangzhou, 310022, Zhejiang, China.
| | - Yan Lu
- Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Women's Reproductive Health Key Laboratory of Zhejiang Province, Department of Gynecologic Oncology, Women's Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China.
- Cancer Center, Zhejiang University, Hangzhou, 310029, Zhejiang, China.
| | - Pengyuan Liu
- Department of Respiratory Medicine, Sir Run Run Shaw Hospital and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang, China.
- Department of Physiology, Center of Systems Molecular Medicine, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
- Cancer Center, Zhejiang University, Hangzhou, 310029, Zhejiang, China.
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13
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Indacochea A, Guerrero S, Ureña M, Araujo F, Coll O, LLeonart ME, Gebauer F. Cold-inducible RNA binding protein promotes breast cancer cell malignancy by regulating Cystatin C levels. RNA (NEW YORK, N.Y.) 2021; 27:190-201. [PMID: 33172965 PMCID: PMC7812870 DOI: 10.1261/rna.076422.120] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/05/2020] [Indexed: 06/11/2023]
Abstract
Cold-inducible RNA binding protein (CIRBP) is a stress-responsive protein that promotes cancer development and inflammation. Critical to most CIRBP functions is its capacity to bind and posttranscriptionally modulate mRNA. However, a transcriptome-wide analysis of CIRBP mRNA targets in cancer has not yet been performed. Here, we use an ex vivo breast cancer model to identify CIRBP targets and mechanisms. We find that CIRBP transcript levels correlate with breast cancer subtype and are an indicator of luminal A/B prognosis. Accordingly, overexpression of CIRBP in nontumoral MCF-10A cells promotes cell growth and clonogenicity, while depletion of CIRBP from luminal A MCF-7 cells has opposite effects. We use RNA immunoprecipitation followed by high-throughput sequencing (RIP-seq) to identify a set of 204 high confident CIRBP targets in MCF-7 cells. About 10% of these showed complementary changes after CIRBP manipulation in MCF-10A and MCF-7 cells, and were highly interconnected with known breast cancer genes. To test the potential of CIRBP-mediated regulation of these targets in breast cancer development, we focused on Cystatin C (CST3), one of the most highly interconnected genes, encoding a protein that displays tumor suppressive capacities. CST3 depletion restored the effects of CIRBP depletion in MCF-7 cells, indicating that CIRBP functions, at least in part, by down-regulating CST3 levels. Our data provide a resource of CIRBP targets in breast cancer, and identify CST3 as a novel downstream mediator of CIRBP function.
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Affiliation(s)
- Alberto Indacochea
- Gene Regulation, Stem Cells and Cancer Programme, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003 Barcelona, Spain
- Biomedical Research in Cancer Stem Cells, Vall d'Hebron Research Institute (VHIR), 08035 Barcelona, Spain
| | - Santiago Guerrero
- Gene Regulation, Stem Cells and Cancer Programme, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003 Barcelona, Spain
| | - Macarena Ureña
- Biomedical Research in Cancer Stem Cells, Vall d'Hebron Research Institute (VHIR), 08035 Barcelona, Spain
| | - Ferrán Araujo
- Biomedical Research in Cancer Stem Cells, Vall d'Hebron Research Institute (VHIR), 08035 Barcelona, Spain
| | - Olga Coll
- Gene Regulation, Stem Cells and Cancer Programme, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003 Barcelona, Spain
| | - Matilde E LLeonart
- Biomedical Research in Cancer Stem Cells, Vall d'Hebron Research Institute (VHIR), 08035 Barcelona, Spain
- Spanish Biomedical Research Network Centre in Oncology, CIBERONC, Spain
| | - Fátima Gebauer
- Gene Regulation, Stem Cells and Cancer Programme, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003 Barcelona, Spain
- Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain
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14
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Dankner M, Caron M, Al-Saadi T, Yu W, Ouellet V, Ezzeddine R, Maritan SM, Annis MG, Le PU, Nadaf J, Neubarth NS, Savage P, Zuo D, Couturier CP, Monlong J, Djambazian H, Altoukhi H, Bourque G, Ragoussis J, Diaz RJ, Park M, Guiot MC, Lam S, Petrecca K, Siegel PM. Invasive growth associated with Cold-Inducible RNA-Binding Protein expression drives recurrence of surgically resected brain metastases. Neuro Oncol 2021; 23:1470-1480. [PMID: 33433612 DOI: 10.1093/neuonc/noab002] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Sixty percent of surgically resected brain metastases (BrM) recur within 1 year. These recurrences have long been thought to result from the dispersion of cancer cells during surgery. We tested the alternative hypothesis that invasion of cancer cells into the adjacent brain plays a significant role in local recurrence and shortened overall survival. METHODS We determined the invasion pattern of 164 surgically resected BrM and correlated with local recurrence and overall survival. We performed single-cell RNA sequencing (scRNAseq) of >15,000 cells from BrM and adjacent brain tissue. Validation of targets was performed with a novel cohort of BrM patient-derived xenografts (PDX) and patient tissues. RESULTS We demonstrate that invasion of metastatic cancer cells into the adjacent brain is associated with local recurrence and shortened overall survival. scRNAseq of paired tumor and adjacent brain samples confirmed the existence of invasive cancer cells in the tumor-adjacent brain. Analysis of these cells identified Cold-Inducible RNA-Binding Protein (CIRBP) overexpression in invasive cancer cells compared to cancer cells located within the metastases. Applying PDX models that recapitulate the invasion pattern observed in patients, we show that CIRBP is overexpressed in highly invasive BrM and is required for efficient invasive growth in the brain. CONCLUSIONS These data demonstrate peritumoral invasion as a driver of treatment failure in BrM that is functionally mediated by CIRBP. These findings improve our understanding of the biology underlying post-operative treatment failure and lay the groundwork for rational clinical trial development based upon invasion pattern in surgically resected brain metastases.
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Affiliation(s)
- Matthew Dankner
- Division of Experimental Medicine, Montréal, Québec, Canada.,Goodman Cancer Research Centre, Montréal, Québec, Canada.,McGill Faculty of Medicine, Montréal, Québec, Canada
| | - Maxime Caron
- McGill University Genome Centre, Department of Human Genetics, Montréal, Québec, Canada
| | - Tariq Al-Saadi
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada
| | - WenQing Yu
- McGill Faculty of Medicine, Montréal, Québec, Canada
| | - Veronique Ouellet
- Centre Hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Rima Ezzeddine
- Goodman Cancer Research Centre, Montréal, Québec, Canada.,Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
| | - Sarah M Maritan
- Division of Experimental Medicine, Montréal, Québec, Canada.,Goodman Cancer Research Centre, Montréal, Québec, Canada.,McGill Faculty of Medicine, Montréal, Québec, Canada
| | | | - Phuong Uyen Le
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada
| | - Javad Nadaf
- McGill University Genome Centre, Department of Human Genetics, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada
| | - Noah S Neubarth
- Goodman Cancer Research Centre, Montréal, Québec, Canada.,Department of Anatomy & Cell Biology, University of Toronto, Toronto, Ontario, Canada
| | - Paul Savage
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Dongmei Zuo
- Goodman Cancer Research Centre, Montréal, Québec, Canada
| | - Charles P Couturier
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada
| | - Jean Monlong
- McGill University Genome Centre, Department of Human Genetics, Montréal, Québec, Canada
| | - Haig Djambazian
- McGill University Genome Centre, Department of Human Genetics, Montréal, Québec, Canada
| | - Huda Altoukhi
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Radiation Oncology, McGill University, Montreal Quebec Canada
| | - Guillaume Bourque
- McGill University Genome Centre, Department of Human Genetics, Montréal, Québec, Canada
| | - Jiannis Ragoussis
- McGill University Genome Centre, Department of Human Genetics, Montréal, Québec, Canada
| | - Roberto J Diaz
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada
| | - Morag Park
- Division of Experimental Medicine, Montréal, Québec, Canada.,Goodman Cancer Research Centre, Montréal, Québec, Canada.,McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada.,Department of Pathology, McGill University, Montreal Quebec Canada
| | - Marie-Christine Guiot
- Goodman Cancer Research Centre, Montréal, Québec, Canada.,McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada.,Department of Pathology, McGill University, Montreal Quebec Canada
| | - Stephanie Lam
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Diagnostic Radiology, McGill University, Montreal Quebec Canada
| | - Kevin Petrecca
- McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, Montréal, Québec, Canada
| | - Peter M Siegel
- Division of Experimental Medicine, Montréal, Québec, Canada.,Goodman Cancer Research Centre, Montréal, Québec, Canada.,McGill Faculty of Medicine, Montréal, Québec, Canada.,Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada.,Department of Anatomy & Cell Biology, University of Toronto, Toronto, Ontario, Canada.,Department of Radiation Oncology, McGill University, Montreal Quebec Canada
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15
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García-Cárdenas JM, Guerrero S, López-Cortés A, Armendáriz-Castillo I, Guevara-Ramírez P, Pérez-Villa A, Yumiceba V, Zambrano AK, Leone PE, Paz-y-Miño C. Post-transcriptional Regulation of Colorectal Cancer: A Focus on RNA-Binding Proteins. Front Mol Biosci 2019; 6:65. [PMID: 31440515 PMCID: PMC6693420 DOI: 10.3389/fmolb.2019.00065] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/23/2019] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) is a major health problem with an estimated 1. 8 million new cases worldwide. To date, most CRC studies have focused on DNA-related aberrations, leaving post-transcriptional processes under-studied. However, post-transcriptional alterations have been shown to play a significant part in the maintenance of cancer features. RNA binding proteins (RBPs) are uprising as critical regulators of every cancer hallmark, yet little is known regarding the underlying mechanisms and key downstream oncogenic targets. Currently, more than a thousand RBPs have been discovered in humans and only a few have been implicated in the carcinogenic process and even much less in CRC. Identification of cancer-related RBPs is of great interest to better understand CRC biology and potentially unveil new targets for cancer therapy and prognostic biomarkers. In this work, we reviewed all RBPs which have a role in CRC, including their control by microRNAs, xenograft studies and their clinical implications.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - César Paz-y-Miño
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Genética y Genómica, Universidad UTE, Quito, Ecuador
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16
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Lin TY, Chen Y, Jia JS, Zhou C, Lian M, Wen YT, Li XY, Chen HW, Lin XL, Zhang XL, Xiao SJ, Sun Y, Xiao D. Loss of Cirbp expression is correlated with the malignant progression and poor prognosis in nasopharyngeal carcinoma. Cancer Manag Res 2019; 11:6959-6969. [PMID: 31413636 PMCID: PMC6662521 DOI: 10.2147/cmar.s211389] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 06/18/2019] [Indexed: 12/25/2022] Open
Abstract
Purpose: The correlation of cold-inducible RNA-binding protein (Cirbp) expression with clinicopathological features including patient prognosis in nasopharyngeal carcinoma (NPC) was investigated. Methods: The expression of Cirbp in NPC cell lines and tissue specimens was examined by qRT-PCR or immunohistochemistry (IHC). Results: Immunohistochemistry (IHC) results showed that high Cirbp expression was detected in 61 of 61 non-cancerous nasopharyngeal squamous epithelial biopsies, whereas the significantly reduced expression of Cirbp was observed in NPC specimens. In addition, IHC assay for Cirbp protein illustrated that the cells of 177 NPC samples and nasopharyngeal squamous epithlial cells displayed strong signals in nuclei and faint signals in cytoplasm, whereas Cirbp protein is mainly detected in the cell’s cytoplasm in many other cancers. More importantly, TNM classification displayed that the low expression of Cirbp was more frequently observed in T3-T4, N2-N3, M1 and III-IV NPC biopsies, and undifferentiated carcinoma (UDC) than T1-T2, N0-N1, M0 and I-II tumors, and differentiated nonkeratinizing carcinoma (DNKC), suggesting that Cirbp loss is a key molecular event in advanced cases of NPC. Kaplan–Meier survival analysis indicated that NPC patients showing lower Cirbp expression had a significantly shorter overall survival time than those with high Cirbp expression. Multivariate analysis suggested that the level of Cirbp expression was an independent prognostic indicator for NPC survival. Finally, we revealed a significant positive association between Cirbp expression and E-cadherin, and a notable negative correlation between Cirbp expression and Ki67 labeling index in NPC biopsies. Conclusion: Collectively, these findings demonstrate that loss of Cirbp expression is correlated with malignant progression and poor prognosis in NPC.
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Affiliation(s)
- Tao-Yan Lin
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Yan Chen
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Jun-Shuang Jia
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Chen Zhou
- Department of Pathology, The Second Affiliated Hospital, Guilin Medical University, Guilin 541199, People's Republic of China
| | - Mei Lian
- Institute of Comparative Medicine and Laboratory Animal Center, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Yue-Ting Wen
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Xiao-Yan Li
- Institute of Comparative Medicine and Laboratory Animal Center, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Heng-Wei Chen
- Institute of Comparative Medicine and Laboratory Animal Center, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Xiao-Lin Lin
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Xiao-Ling Zhang
- Department of Physiology, Faculty of Basic Medical Sciences, Guilin Medical University, Guilin 541004, People's Republic of China
| | - Sheng-Jun Xiao
- Department of Pathology, The Second Affiliated Hospital, Guilin Medical University, Guilin 541199, People's Republic of China
| | - Yan Sun
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510080, People's Republic of China
| | - Dong Xiao
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou 510515, People's Republic of China.,Institute of Comparative Medicine and Laboratory Animal Center, Southern Medical University, Guangzhou 510515, People's Republic of China
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17
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Roilo M, Kullmann MK, Hengst L. Cold-inducible RNA-binding protein (CIRP) induces translation of the cell-cycle inhibitor p27Kip1. Nucleic Acids Res 2019; 46:3198-3210. [PMID: 29361038 PMCID: PMC5888589 DOI: 10.1093/nar/gkx1317] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 01/11/2018] [Indexed: 01/10/2023] Open
Abstract
The CDK inhibitor p27Kip1 plays a central role in controlling cell proliferation and cell-cycle exit. p27Kip1 protein levels oscillate during cell-cycle progression and are regulated by mitogen or anti-proliferative signaling. The abundance of the protein is frequently determined by post-transcriptional mechanisms including ubiquitin-mediated proteolysis and translational control. Here, we report that the cold-inducible RNA-binding protein (CIRP) selectively binds to the 5′ untranslated region of the p27Kip1 mRNA. CIRP is induced, modified and relocalized in response to various stress stimuli and can regulate cell survival and cell proliferation particularly during stress. Binding of CIRP to the 5′UTR of the p27Kip1 mRNA significantly enhanced reporter translation. In cells exposed to mild hypothermia, the induction of CIRP correlated with increased translation of a p27Kip1 5′UTR reporter and with the accumulation of p27Kip1 protein. shRNA-mediated CIRP knockdown could prevent the induction of translation. We found that p27Kip1 is central for the decreased proliferation at lower temperature, since p27Kip1 KO mouse embryonic fibroblasts (MEFs) hardly increased their doubling time in hypothermic conditions, whereas wild-type MEFs significantly delayed proliferation in response to cold stress. This suggests that the CIRP-dependent p27Kip1 upregulation during mild hypothermia contributes to the cold shock-induced inhibition of cell proliferation.
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Affiliation(s)
- Martina Roilo
- Division of Medical Biochemistry, Biocenter, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Michael K Kullmann
- Division of Medical Biochemistry, Biocenter, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Ludger Hengst
- Division of Medical Biochemistry, Biocenter, Medical University of Innsbruck, Innsbruck 6020, Austria
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18
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Chen L, Tian Q, Wang W. Association between CIRP expression and hypoxic-ischemic brain injury in neonatal rats. Exp Ther Med 2019; 18:1515-1520. [PMID: 31410103 PMCID: PMC6676150 DOI: 10.3892/etm.2019.7767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 04/17/2019] [Indexed: 01/23/2023] Open
Abstract
The role of cold inducible RNA-binding protein (CIRP) in mediating ischemic brain injury in neonatal rats under chronic hypobaric hypoxia was investigated. The neonatal rat model of chronic hypobaric hypoxia and the cell culture model of SH-SY5Y cells exposed to hypoxia (1% O2) were constructed. The expression of CIRP and hypoxia-inducible factor-1α (HIF-1α) was detected after hypoxic exposure, and the apoptosis-related proteins were analyzed via terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) and western blot analysis to detect neuronal apoptosis. Moreover, the effects of CIRP overexpression on HIF-1α and neuronal apoptosis were identified. Chronic hypobaric hypoxia can lead to HIF-1α expression and neuronal apoptosis in the body. CIRP was induced at early exposure (3 d/7 d). However, the CIRP level in the hypoxic group was obviously lower than that in the control group with the prolongation of exposure time (21 d). In addition, the knockdown of HIF-1α significantly reduced the neuronal apoptosis under hypoxic conditions, indicating that HIF-1α may promote apoptosis during exposure. The overexpression of CIRP significantly inhibited the upregulation of HIF-1α during hypoxia and the HIF-1α-mediated neuronal apoptosis. Results of the current study showed that, CIRP is involved in the ischemic brain injury induced by chronic hypoxia through downregulation of HIF-1α expression.
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Affiliation(s)
- Lifang Chen
- Department of Paediatrics, Liaocheng Third People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Qiaohuan Tian
- Department of Paediatrics, Liaocheng Third People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Weihua Wang
- Department of Paediatrics, The First People's Hospital of Xianyang City, Xianyang, Shaanxi 712000, P.R. China
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19
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Sun W, Liao Y, Yi Q, Wu S, Tang L, Tong L. The Mechanism of CIRP in Regulation of STAT3 Phosphorylation and Bag-1/S Expression Upon UVB Radiation. Photochem Photobiol 2018; 94:1234-1239. [PMID: 29981150 PMCID: PMC6234056 DOI: 10.1111/php.12981] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 07/02/2018] [Indexed: 01/03/2023]
Abstract
Cold-inducible RNA binding protein (CIRP) is a stress-inducible protein, which could be activated by various cellular stresses, such as hypothermia, hypoxia and UV irradiation. Our previous study indicated that UVB radiation (3 mJ cm-2 ) induces CIRP expression, which promotes keratinocytes growth, survival and eventually transformation via activation of STAT3-Bag-1/S signaling cascade. However, the mechanism(s) of CIRP in regulating p-STAT3 activation and Bag-1/S expression have not been fully elucidated. In this study, we demonstrate that repeated exposure of UVB radiation (3 mJ cm-2 ) or overexpression of CIRP could lead to an elevation of the phosphorylation of Janus kinase (JAK) family proteins (JAK2 and JAK3) in HaCaT cells. The increased phosphorylation of the JAKs correlates to an increased phosphorylation of STAT3 (p-STAT3) in the cells; inhibiting JAKs using JAK inhibitor I lead to a reduction of STAT3 phosphorylation and Bag-1/S expression in wild type HaCaT and CIRP stably transfected HaCaT cells with or without UVB exposure. Furthermore, our data indicated that inhibiting the downstream factor of CIRP, NF-κB, using BAY 11-7085 could also decrease the p-STAT3. These results lead us to propose that CIRP mediates the activation of STAT3-Bag-1/S signaling cascade via activating the JAKs and NF-κB signaling pathways.
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Affiliation(s)
- Weichao Sun
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China,Edison Biotechnology Institute, Ohio University, Athens, Ohio 45701, USA
| | - Yi Liao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China,Cardiothoracic Surgery Department, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Qian Yi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China,Department of Physiology, College of preclinical medicine, Southwest Medical University, Luzhou, Sichuan province, China
| | - Shiyong Wu
- Edison Biotechnology Institute, Ohio University, Athens, Ohio 45701, USA,Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
| | - Liling Tang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China,Corresponding authors’: or
| | - Lingying Tong
- Edison Biotechnology Institute, Ohio University, Athens, Ohio 45701, USA,Corresponding authors’: or
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20
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CIRBP is a novel oncogene in human bladder cancer inducing expression of HIF-1α. Cell Death Dis 2018; 9:1046. [PMID: 30315244 PMCID: PMC6185914 DOI: 10.1038/s41419-018-1109-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/14/2018] [Accepted: 09/26/2018] [Indexed: 12/29/2022]
Abstract
Cold-inducible RNA binding protein (CIRBP) has been reported to be associated with distinct tumorigenesis. In this study, we investigated the role of CIRBP in human bladder cancer (BCa), indicating that CIRBP is overexpressed in BCa tissues and cell lines to promote proliferation and migration. Moreover, CIRBP could induce expression of HIF-1α via binding to the 3′-UTR of its mRNA to increase the mRNA stability in BCa cells. Furthermore, we demonstrated that PTGIS is a HIF-1α targeted gene, a major regulator in hypoxic cancer progression by activating transcription of various oncogenes. Our results also suggested that overexpression of HIF-1α may suppress the expression of PTGIS in BCa cells, by binding to HRE sequence at the promoter region of PTGIS. In addition, we found a strongly downregulation of PTGIS in BCa tissue and transcriptionally inhibited by HIF-1α in BCa cells, which could be triggered by its DNA methylation. Further result suggested that knockdown of CIRBP could promote the expression of PTGIS, meanwhile knockdown of PTGIS could partially rescue CIRBP-deficiency induced inhibition of migration and proliferation in BCa cells. Taken together, our study indicated that CIRBP could be a novel oncogene in human bladder cancer inducing transcription of HIF-1α, which could inhibit expression of methylated PTGIS.
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21
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Mirza-Aghazadeh-Attari M, Darband SG, Kaviani M, Mihanfar A, Aghazadeh Attari J, Yousefi B, Majidinia M. DNA damage response and repair in colorectal cancer: Defects, regulation and therapeutic implications. DNA Repair (Amst) 2018; 69:34-52. [PMID: 30055507 DOI: 10.1016/j.dnarep.2018.07.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/15/2018] [Accepted: 07/15/2018] [Indexed: 12/11/2022]
Abstract
DNA damage response, a key factor involved in maintaining genome integrity and stability, consists of several kinase-dependent signaling pathways, which sense and transduce DNA damage signal. The severity of damage appears to determine DNA damage responses, which can include cell cycle arrest, damage repair and apoptosis. A number of recent studies have demonstrated that defection in signaling through this network is thought to be an underlying mechanism behind the development and progression of various types of human malignancies, including colorectal cancer. In this review, colorectal cancer and its molecular pathology as well as DNA damage response is briefly introduced. Finally, the involvement of key components of this network in the initiation/progression, prognosis, response to treatment and development of drug resistance is comprehensively discussed.
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Affiliation(s)
- Mohammad Mirza-Aghazadeh-Attari
- Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saber Ghazizadeh Darband
- Danesh Pey Hadi Co., Health Technology Development Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Mojtaba Kaviani
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Ainaz Mihanfar
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran.
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22
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ECD promotes gastric cancer metastasis by blocking E3 ligase ZFP91-mediated hnRNP F ubiquitination and degradation. Cell Death Dis 2018; 9:479. [PMID: 29706618 PMCID: PMC5924763 DOI: 10.1038/s41419-018-0525-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 03/23/2018] [Indexed: 12/12/2022]
Abstract
The human ortholog of the Drosophila ecdysoneless gene (ECD) is required for embryonic development and cell-cycle progression; however, its role in cancer progression and metastasis remains unclear. Here, we found that ECD is frequently overexpressed in gastric cancer (GC), especially in metastatic GC, and is correlated with poor clinical outcomes in GC patients. Silencing ECD inhibited GC migration and invasion in vitro and metastasis in vivo, while ECD overexpression promoted GC migration and invasion. ECD promoted GC invasion and metastasis by protecting hnRNP F from ubiquitination and degradation. We identified ZFP91 as the E3 ubiquitin ligase that is responsible for hnRNP F ubiquitination at Lys 185 and proteasomal degradation. ECD competitively bound to hnRNP F via the N-terminal STG1 domain (13-383aa), preventing hnRNP F from interacting with ZFP91, thus preventing ZFP91-mediated hnRNP F ubiquitination and proteasomal degradation. Collectively, our findings indicate that ECD promotes cancer invasion and metastasis by preventing E3 ligase ZFP91-mediated hnRNP F ubiquitination and degradation, suggesting that ECD may be a marker for poor prognosis and a potential therapeutic target for GC patients.
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23
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Chen JK, Lin WL, Chen Z, Liu HW. PARP-1-dependent recruitment of cold-inducible RNA-binding protein promotes double-strand break repair and genome stability. Proc Natl Acad Sci U S A 2018; 115:E1759-E1768. [PMID: 29432179 PMCID: PMC5828585 DOI: 10.1073/pnas.1713912115] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Maintenance of genome integrity is critical for both faithful propagation of genetic information and prevention of mutagenesis induced by various DNA damage events. Here we report cold-inducible RNA-binding protein (CIRBP) as a newly identified key regulator in DNA double-strand break (DSB) repair. On DNA damage, CIRBP temporarily accumulates at the damaged regions and is poly(ADP ribosyl)ated by poly(ADP ribose) polymerase-1 (PARP-1). Its dissociation from the sites of damage may depend on its phosphorylation status as mediated by phosphatidylinositol 3-kinase-related kinases. In the absence of CIRBP, cells showed reduced γH2AX, Rad51, and 53BP1 foci formation. Moreover, CIRBP-depleted cells exhibited impaired homologous recombination, impaired nonhomologous end-joining, increased micronuclei formation, and higher sensitivity to gamma irradiation, demonstrating the active involvement of CIRBP in DSB repair. Furthermore, CIRBP depleted cells exhibited defects in DNA damage-induced chromatin association of the MRN complex (Mre11, Rad50, and NBS1) and ATM kinase. CIRBP depletion also reduced phosphorylation of a variety of ATM substrate proteins and thus impaired the DNA damage response. Taken together, these results reveal a previously unrecognized role for CIRBP in DSB repair.
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Affiliation(s)
- Jung-Kuei Chen
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712
| | - Wen-Ling Lin
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712
| | - Zhang Chen
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712
| | - Hung-Wen Liu
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712;
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712
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Lujan DA, Ochoa JL, Hartley RS. Cold-inducible RNA binding protein in cancer and inflammation. WILEY INTERDISCIPLINARY REVIEWS-RNA 2018; 9. [PMID: 29322631 DOI: 10.1002/wrna.1462] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/17/2017] [Accepted: 11/29/2017] [Indexed: 12/17/2022]
Abstract
RNA binding proteins (RBPs) play key roles in RNA dynamics, including subcellular localization, translational efficiency and metabolism. Cold-inducible RNA binding protein (CIRP) is a stress-induced protein that was initially described as a DNA damage-induced transcript (A18 hnRNP), as well as a cold-shock domain containing cold-stress response protein (CIRBP) that alters the translational efficiency of its target messenger RNAs (mRNAs). This review summarizes recent work on the roles of CIRP in the context of inflammation and cancer. The function of CIRP in cancer appeared to be solely driven though its functions as an RBP that targeted cancer-associated mRNAs, but it is increasingly clear that CIRP also modulates inflammation. Several recent studies highlight roles for CIRP in immune responses, ranging from sepsis to wound healing and tumor-promoting inflammation. While modulating inflammation is an established role for RBPs that target cytokine mRNAs, CIRP appears to modulate inflammation by several different mechanisms. CIRP has been found in serum, where it binds the TLR4-MD2 complex, acting as a Damage-associated molecular pattern (DAMP). CIRP activates the NF-κB pathway, increasing phosphorylation of Iκκ and IκBα, and stabilizes mRNAs encoding pro-inflammatory cytokines. While CIRP promotes higher levels of pro-inflammatory cytokines in certain cancers, it also decreases inflammation to accelerate wound healing. This dichotomy suggests that the influence of CIRP on inflammation is context dependent and highlights the importance of detailing the mechanisms by which CIRP modulates inflammation. WIREs RNA 2018, 9:e1462. doi: 10.1002/wrna.1462 This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications.
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Affiliation(s)
- Daniel A Lujan
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine and University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
| | - Joey L Ochoa
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine and University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
| | - Rebecca S Hartley
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine and University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
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25
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Recent progress in the research of cold-inducible RNA-binding protein. Future Sci OA 2017; 3:FSO246. [PMID: 29134130 PMCID: PMC5674272 DOI: 10.4155/fsoa-2017-0077] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/16/2017] [Indexed: 12/22/2022] Open
Abstract
Cold-inducible RNA-binding protein (CIRP) is a cold-shock protein which can be induced after exposure to a moderate cold-shock in different species ranging from amphibians to humans. Expression of CIRP can also be regulated by hypoxia, UV radiation, glucose deprivation, heat stress and H2O2, suggesting that CIRP is a general stress-response protein. In response to stress, CIRP can migrate from the nucleus to the cytoplasm and regulate mRNA stability through its binding site on the 3'-UTR of its targeted mRNAs. Through the regulation of its targets, CIRP has been implicated in multiple cellular process such as cell proliferation, cell survival, circadian modulation, telomere maintenance and tumor formation and progression. In addition, CIRP can also exert its functions by directly interacting with intracellular signaling proteins. Moreover, CIRP can be secreted out of cells. Extracellular CIRP functions as a damage-associated molecular pattern to promote inflammatory responses and plays an important role in both acute and chronic inflammatory diseases. Here, we summarize novel findings of CIRP investigation and hope to provide insights into the role of CIRP in cell biology and diseases.
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26
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Kim C, Kang D, Lee EK, Lee JS. Long Noncoding RNAs and RNA-Binding Proteins in Oxidative Stress, Cellular Senescence, and Age-Related Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:2062384. [PMID: 28811863 PMCID: PMC5547732 DOI: 10.1155/2017/2062384] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/27/2017] [Accepted: 06/06/2017] [Indexed: 12/12/2022]
Abstract
Cellular senescence is a complex biological process that leads to irreversible cell-cycle arrest. Various extrinsic and intrinsic insults are associated with the onset of cellular senescence and frequently accompany genomic or epigenomic alterations. Cellular senescence is believed to contribute to tumor suppression, immune response, and tissue repair as well as aging and age-related diseases. Long noncoding RNAs (lncRNAs) are >200 nucleotides long, poorly conserved, and transcribed in a manner similar to that of mRNAs. They are tightly regulated during various cellular and physiological processes. Although many lncRNAs and their functional roles are still undescribed, the importance of lncRNAs in a variety of biological processes is widely recognized. RNA-binding proteins (RBPs) have a pivotal role in posttranscriptional regulation as well as in mRNA transport, storage, turnover, and translation. RBPs interact with mRNAs, other RBPs, and noncoding RNAs (ncRNAs) including lncRNAs, and they are involved in the regulation of a broad spectrum of cellular processes. Like other cell fate regulators, lncRNAs and RBPs, separately or cooperatively, are implicated in initiation and maintenance of cellular senescence, aging, and age-related diseases. Here, we review the current understanding of both lncRNAs and RBPs and their association with oxidative stress, senescence, and age-related diseases.
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Affiliation(s)
- Chongtae Kim
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, Republic of Korea
| | - Donghee Kang
- Department of Molecular Medicine and Hypoxia-Related Disease Research Center, Inha University College of Medicine, Incheon 22212, Republic of Korea
| | - Eun Kyung Lee
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, Republic of Korea
| | - Jae-Seon Lee
- Department of Molecular Medicine and Hypoxia-Related Disease Research Center, Inha University College of Medicine, Incheon 22212, Republic of Korea
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27
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Chen X, Liu X, Li B, Zhang Q, Wang J, Zhang W, Luo W, Chen J. Cold Inducible RNA Binding Protein Is Involved in Chronic Hypoxia Induced Neuron Apoptosis by Down-Regulating HIF-1α Expression and Regulated By microRNA-23a. Int J Biol Sci 2017; 13:518-531. [PMID: 28529459 PMCID: PMC5436571 DOI: 10.7150/ijbs.17800] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 02/27/2017] [Indexed: 11/05/2022] Open
Abstract
Background: Neuron apoptosis mediated by hypoxia inducible factor 1α (HIF-1α) in hippocampus is one of the most important factors accounting for the chronic hypobaric hypoxia induced cognitive impairment. As a neuroprotective molecule that is up-regulated in response to various environmental stress, CIRBP was reported to crosstalk with HIF-1α under cellular stress. However, its function under chronic hypobaric hypoxia remains unknown. Objective: In this study, we tried to identify the role of CIRBP in HIF-1α mediated neuron apoptosis under chronic hypobaric hypoxia and find a possible method to maintain its potential neuroprotective in long-term high altitude environmental exposure. Methods: We established a chronic hypobaric hypoxia rat model as well as a tissue culture model where SH-SY5Y cells were exposed to 1% hypoxia. Based on these models, we measured the expressions of HIF-1α and CIRBP under hypoxia exposure and examined the apoptosis of neurons by TUNEL immunofluorescence staining and western blot analysis of apoptosis related proteins. In addition, by establishing HIF-1α shRNA and pEGFP-CIRBP plasmid transfected cells, we confirmed the role of HIF-1α in chronic hypoxia induced neuron apoptosis and identified the influence of CIRBP over-expression upon HIF-1α and neuron apoptosis in the process of exposure. Furthermore, we measured the expression of the reported hypoxia related miRNAs in both models and the influence of miRNAs' over-expression/knock-down upon CIRBP in the process of HIF-1α mediated neuron apoptosis. Results: HIF-1α expression as well as neuron apoptosis was significantly elevated by chronic hypobaric hypoxia both in vivo and in vitro. CIRBP was induced in the early stage of exposure (3d/7d); however as the exposure was prolonged (21d), CIRBP level of the hypoxia group became significantly lower than that of control. In addition, HIF-1α knockdown significantly decreased neuron apoptosis under hypoxia, suggesting HIF-1α may be pro-apoptotic in the process of exposure. CIRBP over-expression significantly suppressed HIF-1α up-regulation in hypoxia and inhibited HIF-1α mediated neuron apoptosis. Interestingly, miR-23a was also induced by hypoxia exposure and showed the same changing tendency with CIRBP (increasing in 3d/7d, decreasing in 21d). In addition, over-expressing miR-23a up-regulated CIRBP, down-regulated HIF-1α and attenuated neuron apoptosis. Conclusion: Cold inducible RNA binding protein is involved in chronic hypoxia induced neuron apoptosis by down-regulating HIF-1α expression, and MiR-23a may be an important tool to maintain CIRBP level and function.
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Affiliation(s)
| | | | | | | | | | - Wenbin Zhang
- Department of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Wenjing Luo
- Department of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Jingyuan Chen
- Department of Occupational and Environmental Health, the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
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28
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Coburn K, Melville Z, Aligholizadeh E, Roth BM, Varney KM, Carrier F, Pozharski E, Weber DJ. Crystal structure of the human heterogeneous ribonucleoprotein A18 RNA-recognition motif. Acta Crystallogr F Struct Biol Commun 2017; 73:209-214. [PMID: 28368279 PMCID: PMC5379170 DOI: 10.1107/s2053230x17003454] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/02/2017] [Indexed: 11/10/2022] Open
Abstract
The heterogeneous ribonucleoprotein A18 (hnRNP A18) is upregulated in hypoxic regions of various solid tumors and promotes tumor growth via the coordination of mRNA transcripts associated with pro-survival genes. Thus, hnRNP A18 represents an important therapeutic target in tumor cells. Presented here is the first X-ray crystal structure to be reported for the RNA-recognition motif of hnRNP A18. By comparing this structure with those of homologous RNA-binding proteins (i.e. hnRNP A1), three residues on one face of an antiparallel β-sheet (Arg48, Phe50 and Phe52) and one residue in an unstructured loop (Arg41) were identified as likely to be involved in protein-nucleic acid interactions. This structure helps to serve as a foundation for biophysical studies of this RNA-binding protein and structure-based drug-design efforts for targeting hnRNP A18 in cancer, such as malignant melanoma, where hnRNP A18 levels are elevated and contribute to disease progression.
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Affiliation(s)
- Katherine Coburn
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
| | - Zephan Melville
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
| | - Ehson Aligholizadeh
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
| | - Braden M. Roth
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
| | - Kristen M. Varney
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
| | - France Carrier
- Department of Radiation Oncology, Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 655 West Baltimore Street, Baltimore, MD 21201, USA
| | - Edwin Pozharski
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
| | - David J. Weber
- Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 108 North Greene Street, Baltimore, MD 21201, USA
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RNA-Binding Protein Dnd1 Promotes Breast Cancer Apoptosis by Stabilizing the Bim mRNA in a miR-221 Binding Site. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9596152. [PMID: 28191469 PMCID: PMC5278209 DOI: 10.1155/2017/9596152] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 11/14/2016] [Indexed: 01/21/2023]
Abstract
RNA-binding proteins (RBPs) and miRNAs are capable of controlling processes in normal development and cancer. Both of them could determine RNA transcripts fate from synthesis to decay. One such RBP, Dead end (Dnd1), is essential for regulating germ-cell viability and suppresses the germ-cell tumors development, yet how it exerts its functions in breast cancer has remained unresolved. The level of Dnd1 was detected in 21 cancerous tissues paired with neighboring normal tissues by qRT-PCR. We further annotated TCGA (The Cancer Genome Atlas) mRNA expression profiles and found that the expression of Dnd1 and Bim is positively correlated (p = 0.04). Patients with higher Dnd1 expression level had longer overall survival (p = 0.0014) by KM Plotter tool. Dnd1 knockdown in MCF-7 cells decreased Bim expression levels and inhibited apoptosis. While knockdown of Dnd1 promoted the decay of Bim mRNA 3′UTR, the stability of Bim-5′UTR was not affected. In addition, mutation of miR-221-binding site in Bim-3′UTR canceled the effect of Dnd1 on Bim mRNA. Knockdown of Dnd1 in MCF-7 cells confirmed that Dnd1 antagonized miR-221-inhibitory effects on Bim expression. Overall, our findings indicate that Dnd1 facilitates apoptosis by increasing the expression of Bim via its competitive combining with miR-221 in Bim-3′UTR. The new function of Dnd1 may contribute to a vital role in breast cancer development.
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