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Liu AB, Liu J, Wang S, Ma L, Zhang JF. Biological role and expression of translationally controlled tumor protein (TCTP) in tumorigenesis and development and its potential for targeted tumor therapy. Cancer Cell Int 2024; 24:198. [PMID: 38835077 DOI: 10.1186/s12935-024-03355-9] [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: 12/07/2023] [Accepted: 05/03/2024] [Indexed: 06/06/2024] Open
Abstract
Translationally controlled tumor protein (TCTP), also known as histamine-releasing factor (HRF) or fortilin, is a highly conserved protein found in various species. To date, multiple studies have demonstrated the crucial role of TCTP in a wide range of cellular pathophysiological processes, including cell proliferation and survival, cell cycle regulation, cell death, as well as cell migration and movement, all of which are major pathogenic mechanisms of tumorigenesis and development. This review aims to provide an in-depth analysis of the functional role of TCTP in tumor initiation and progression, with a particular focus on cell proliferation, cell death, and cell migration. It will highlight the expression and pathological implications of TCTP in various tumor types, summarizing the current prevailing therapeutic strategies that target TCTP.
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Affiliation(s)
- An-Bu Liu
- Department of Emergency Medical, General Hospital of Ningxia Medical University, Yinchuan, 750000, Ningxia, China
| | - Jia Liu
- Medical Experimental Center, General Hospital of Ningxia Medical University, Yinchuan, 750000, Ningxia, China
| | - Sheng Wang
- Department of Emergency Medical, General Hospital of Ningxia Medical University, Yinchuan, 750000, Ningxia, China
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, 750000, Ningxia, China
| | - Lei Ma
- Department of Emergency Medical, General Hospital of Ningxia Medical University, Yinchuan, 750000, Ningxia, China.
| | - Jun-Fei Zhang
- Department of Emergency Medical, General Hospital of Ningxia Medical University, Yinchuan, 750000, Ningxia, China.
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2
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Bae HD, Cho M, Seo H, Lyoo IK, Lee K. Targeting the translationally controlled tumor protein by a monoclonal antibody improves allergic airway inflammation in mice. Biomed Pharmacother 2023; 168:115655. [PMID: 37806090 DOI: 10.1016/j.biopha.2023.115655] [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: 07/21/2023] [Revised: 09/25/2023] [Accepted: 10/04/2023] [Indexed: 10/10/2023] Open
Abstract
Secretion of translationally controlled tumor protein (TCTP) was found in body fluids during the late phase of allergic reactions, implicating TCTP in allergic diseases. Furthermore, blocking TCTP has been shown to be helpful in treating asthma and allergies in animal models. The objectives of this study were to produce anti-TCTP monoclonal antibodies (mAbs), test their ability to inhibit the cytokine-like function of dimeric TCTP (dTCTP) in vitro and to assess their therapeutic effects in a murine model of ovalbumin (OVA)-induced airway inflammation. We first verified the inhibitory effects of 4 anti-TCTP mAbs on dTCTP-induced secretion of IL-8 in BEAS-2B cells. To investigate the anti-inflammatory effect of anti-TCTP mAbs on allergic airway inflammation, we treated OVA-sensitized mice with anti-TCTP mAbs before OVA challenge. The changes in bronchoalveolar lavage fluid (BALF) cells, IL-4, IL-5, and IL-13 levels in both BALF and lung homogenates, plasma levels of OVA-specific IgE, and lung tissues were analyzed. We found that JEW-M449 anti-TCTP mAb bound to the flexible loop of TCTP and significantly inhibited dTCTP-induced IL-8 release, making it the most effective inhibitor in our study. We also found that treatment with JEW-M449 significantly reduced the infiltration of inflammatory cells and suppressed the OVA-induced upregulation of type 2 cytokines in both BALF and lung homogenates in a dose-dependent manner. In addition, JEW-M449 significantly attenuated the degree of goblet cell hyperplasia and mucus secretion. Our results demonstrate that specific targeting of the flexible loop of TCTP is a potent strategy for treating airway inflammatory diseases.
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Affiliation(s)
- Hae-Duck Bae
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, the Republic of Korea
| | - Minyoung Cho
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, the Republic of Korea
| | - Hyeran Seo
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, the Republic of Korea
| | - In Kyoon Lyoo
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, the Republic of Korea
| | - Kyunglim Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, the Republic of Korea.
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3
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Stoyanov DS, Conev NV, Penkova-Ivanova MI, Donev IS. Prognostic value of translationally controlled tumor protein in colon cancer. Mol Clin Oncol 2023; 19:72. [PMID: 37614375 PMCID: PMC10442730 DOI: 10.3892/mco.2023.2668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/12/2023] [Indexed: 08/25/2023] Open
Abstract
The translationally controlled tumor protein (TCTP) is a highly conserved protein involved in a variety of normal cell functions and disease processes. Preclinical studies revealed that TCTP has anti-apoptotic properties, promotes cell growth and division and is involved in cancer progression by promoting invasion and metastasis. The present study explored the potential value of TCTP as a prognostic marker in colon cancer. A retrospective analysis of 74 patients with colon cancer was performed. Using immunohistochemistry, TCTP levels in the primary tumor were assessed semi-quantitatively by the calculation of cytoplasmic and nuclear H-score. Cytoplasmic TCTP levels in the primary tumor had no statistically significant association with disease-free survival (DFS), progression-free survival (PFS) and overall survival (OS) in the present patient population. Patients whose primary tumors had a negative nuclear TCTP expression had significantly improved clinical outcomes. The PFS for the negative nuclear TCTP expression group was 7.7 months [95% confidence interval (CI), 5.8-9.5] compared with 5.5 months (95% CI, 3.2-7.8) in the group with positive nuclear expression (P=0.023, Mantel-Cox log-rank). Patients with a negative nuclear expression of TCTP had a significantly higher median OS (22.2 months; 95% CI, 16.1-28.3) compared with those with positive TCTP nuclear expression (median 13.2 months; 95% CI, 10.1-16.3; P=0.008, Mantel-Cox log-rank). In a multivariate Cox regression model, a positive nuclear TCTP H-score was an independent risk factor for worse PFS and OS. The 1-year OS rate in the group with negative nuclear TCTP expression was 86.3% compared with 56.5% in patients with positive nuclear TCTP expression (P=0.008). The present study suggested that semiquantitative H-score measurement of TCTP levels in the nuclei of tumor cells from the primary tumor is a potential prognostic marker for clinical outcomes in patients with colon cancer.
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Affiliation(s)
- Dragomir Svetozarov Stoyanov
- Department of Oncology, Medical University Varna, Varna 9002, Bulgaria
- Clinic of Medical Oncology, UMHAT Sveta Marina, Varna 9010, Bulgaria
| | - Nikolay Vladimirov Conev
- Department of Oncology, Medical University Varna, Varna 9002, Bulgaria
- Clinic of Medical Oncology, UMHAT Sveta Marina, Varna 9010, Bulgaria
| | - Mariya Ivanova Penkova-Ivanova
- Department of Oncology, Medical University Varna, Varna 9002, Bulgaria
- Clinic of Medical Oncology, UMHAT Sveta Marina, Varna 9010, Bulgaria
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4
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Seo H, Bae HD, Pyun H, Kim BG, Lee SI, Song JS, Lee K. PEGylation improves the therapeutic potential of dimerized translationally controlled tumor protein blocking peptide in ovalbumin-induced mouse model of airway inflammation. Drug Deliv 2022; 29:2320-2329. [PMID: 35850571 PMCID: PMC9302014 DOI: 10.1080/10717544.2022.2100511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dimerized translationally controlled tumor protein (dTCTP) initiates a variety of allergic responses in mouse models and that dTCTP-binding peptide 2 (dTBP2) attenuates the allergic inflammation by targeting dTCTP. However, the usefulness of peptide-based drugs is often limited due to their short half-lives, rapid degradation, and high levels of clearance after systemic administration. In this study, we chemically conjugated dTBP2 with 10 kDa polyethylene glycol (PEG) to improve its therapeutic potential. N-terminal mono-PEGylated dTBP2 (PEG-dTBP2) was characterized by in vitro bioactivity assay, pharmacokinetics study, and in vivo efficacy. When compared to the unmodified dTBP2, PEG-dTBP2 reduced proinflammatory cytokine IL-8 secretion in human bronchial cells by 10 to 15% and increased plasma half-life by approximately 2.5-fold in mice. This study specifically demonstrated that PEG-dTBP2 shows higher inhibitory action against ovalbumin (OVA)-induced airway inflammation in mice compared to dTBP2. Importantly, PEG-dTBP2, when administered once at 1 mg/kg, significantly reduced the migration of inflammatory cells and the levels of cytokines in the bronchoalveolar lavage fluids as well as OVA-specific IgE levels in serum. In addition, the degree of goblet cell hyperplasia and mucus secretion were significantly attenuated in the PEG-dTBP2 group compared with the control group. These results suggest that PEG-dTBP2 can be considered a potential candidate drug for regulating allergic inflammation.
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Affiliation(s)
- Hyeran Seo
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Korea
| | - Hae-Duck Bae
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Korea
| | - Haejun Pyun
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Korea
| | - Bo-Gyu Kim
- Department of Internal Medicine and Institute of Health Science, Gyeongsang National University School of Medicine and Hospital, Jinju, Republic of Korea
| | - Sang-Il Lee
- Department of Internal Medicine and Institute of Health Science, Gyeongsang National University School of Medicine and Hospital, Jinju, Republic of Korea
| | - Jin-Sook Song
- Data Convergence Drug Research Center, Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Kyunglim Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Korea
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Guo B, Lin B, Huang Q, Li Z, Zhuo K, Liao J. A nematode effector inhibits plant immunity by preventing cytosolic free Ca 2+ rise. PLANT, CELL & ENVIRONMENT 2022; 45:3070-3085. [PMID: 35880644 DOI: 10.1111/pce.14406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The Meloidogyne enterolobii effector MeTCTP is a member of the translationally controlled tumour protein (TCTP) family, involved in M. enterolobii parasitism. In this study, we found that MeTCTP forms homodimers and, in this form, binds calcium ions (Ca2+ ). At the same time, Ca2+ could induce homodimerization of MeTCTP. We further identified that MeTCTP inhibits the increase of cytosolic free Ca2+ concentration ([Ca2+ ]cyt ) in plant cells and suppresses plant immune responses. This includes suppression of reactive oxygen species burst and cell necrosis, further promoting M. enterolobii parasitism. Our results have elucidated that the effector MeTCTP can directly target Ca2+ by its homodimeric form and prevent [Ca2+ ]cyt rise in plant roots, revealing a novel mechanism utilized by plant pathogens to suppress plant immunity.
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Affiliation(s)
- Bin Guo
- Laboratory of Plant Nematology, College of Plant Protection, South China Agricultural University, Guangzhou, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Borong Lin
- Laboratory of Plant Nematology, College of Plant Protection, South China Agricultural University, Guangzhou, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Qiuling Huang
- Laboratory of Plant Nematology, College of Plant Protection, South China Agricultural University, Guangzhou, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Zhiwen Li
- Laboratory of Plant Nematology, College of Plant Protection, South China Agricultural University, Guangzhou, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Kan Zhuo
- Laboratory of Plant Nematology, College of Plant Protection, South China Agricultural University, Guangzhou, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Jinling Liao
- Laboratory of Plant Nematology, College of Plant Protection, South China Agricultural University, Guangzhou, China
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
- Guangdong Vocational College of Ecological Engineering, Guangzhou, China
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7
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Schistosoma japonicum translationally controlled tumor protein, which is associated with the development of female worms, as a target for control of schistosomiasis. Int J Parasitol 2022; 52:569-579. [DOI: 10.1016/j.ijpara.2022.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 12/14/2022]
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8
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Jadli AS, Parasor A, Gomes KP, Shandilya R, Patel VB. Exosomes in Cardiovascular Diseases: Pathological Potential of Nano-Messenger. Front Cardiovasc Med 2021; 8:767488. [PMID: 34869682 PMCID: PMC8632805 DOI: 10.3389/fcvm.2021.767488] [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: 08/30/2021] [Accepted: 10/06/2021] [Indexed: 12/15/2022] Open
Abstract
Cardiovascular diseases (CVDs) represent a major global health problem, due to their continued high incidences and mortality. The last few decades have witnessed new advances in clinical research which led to increased survival and recovery in CVD patients. Nevertheless, elusive and multifactorial pathophysiological mechanisms of CVD development perplexed researchers in identifying efficacious therapeutic interventions. Search for novel and effective strategies for diagnosis, prevention, and intervention for CVD has shifted research focus on extracellular vesicles (EVs) in recent years. By transporting molecular cargo from donor to recipient cells, EVs modulate gene expression and influence the phenotype of recipient cells, thus EVs prove to be an imperative component of intercellular signaling. Elucidation of the role of EVs in intercellular communications under physiological conditions implied the enormous potential of EVs in monitoring and treatment of CVD. The EVs secreted from the myriad of cells in the cardiovascular system such as cardiomyocytes, cardiac fibroblasts, cardiac progenitor cells, endothelial cells, inflammatory cells may facilitate the communication in physiological and pathological conditions. Understanding EVs-mediated cellular communication may delineate the mechanism of origin and progression of cardiovascular diseases. The current review summarizes exosome-mediated paracrine signaling leading to cardiovascular disease. The mechanistic role of exosomes in cardiovascular disease will provide novel avenues in designing diagnosis and therapeutic interventions.
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Affiliation(s)
- Anshul S Jadli
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Ananya Parasor
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Karina P Gomes
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Ruchita Shandilya
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Vaibhav B Patel
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
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9
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Wang LL, Luo J, He ZH, Liu YQ, Li HG, Xie D, Cai MY. STEAP3 promotes cancer cell proliferation by facilitating nuclear trafficking of EGFR to enhance RAC1-ERK-STAT3 signaling in hepatocellular carcinoma. Cell Death Dis 2021; 12:1052. [PMID: 34741044 PMCID: PMC8571373 DOI: 10.1038/s41419-021-04329-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/30/2021] [Accepted: 10/13/2021] [Indexed: 12/24/2022]
Abstract
STEAP3 (Six-transmembrane epithelial antigen of the prostate 3, TSAP6, dudulin-2) has been reported to be involved in tumor progression in human malignancies. Nevertheless, how it participates in the progression of human cancers, especially HCC, is still unknown. In the present study, we found that STEAP3 was aberrantly overexpressed in the nuclei of HCC cells. In a large cohort of clinical HCC tissues, high expression level of nuclear STEAP3 was positively associated with tumor differentiation and poor prognosis (p < 0.001), and it was an independent prognostic factor for HCC patients. In HCC cell lines, nuclear expression of STEAP3 significantly promoted HCC cells proliferation by promoting stemness phenotype and cell cycle progression via RAC1-ERK-STAT3 and RAC1-JNK-STAT6 signaling axes. Through upregulating the expression and nuclear trafficking of EGFR, STEAP3 participated in regulating EGFR-mediated STAT3 transactivity in a manner of positive feedback. In summary, our findings support that nuclear expression of STEAP3 plays a critical oncogenic role in the progression of HCC via modulation on EGFR and intracellular signaling, and it could be a candidate for prognostic marker and therapeutic target in HCC.
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MESH Headings
- Animals
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Cell Cycle/genetics
- Cell Cycle Proteins/metabolism
- Cell Line, Tumor
- Cell Nucleus/metabolism
- Cell Proliferation
- Disease Progression
- ErbB Receptors/metabolism
- Extracellular Signal-Regulated MAP Kinases/metabolism
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- MAP Kinase Signaling System
- Male
- Mice, Inbred BALB C
- Mice, Nude
- Middle Aged
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
- Oxidoreductases/metabolism
- Phosphorylation
- Prognosis
- Protein Transport
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- STAT3 Transcription Factor/metabolism
- Signal Transduction
- Spheroids, Cellular/metabolism
- Spheroids, Cellular/pathology
- Treatment Outcome
- rac1 GTP-Binding Protein/metabolism
- Mice
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Affiliation(s)
- Li-Li Wang
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Jie Luo
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Zhang-Hai He
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Ye-Qing Liu
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Hai-Gang Li
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Dan Xie
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.
- Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.
| | - Mu-Yan Cai
- Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.
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Bommer UA, Kawakami T. Role of TCTP in Cell Biological and Disease Processes. Cells 2021; 10:cells10092290. [PMID: 34571939 PMCID: PMC8471051 DOI: 10.3390/cells10092290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 08/27/2021] [Indexed: 11/16/2022] Open
Abstract
Translationally controlled tumor protein (TCTP), also referred to as histamine-releasing factor (HRF) or fortilin, is a multifunctional protein, expressed in essentially all eukaryotic organisms [...].
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Affiliation(s)
- Ulrich-Axel Bommer
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia
- Correspondence: (U.-A.B.); (T.K.)
| | - Toshiaki Kawakami
- Laboratory of Allergic Diseases, Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, 9420 Athena Circle, La Jolla, CA 92037, USA
- Correspondence: (U.-A.B.); (T.K.)
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11
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Topoisomerase II is regulated by translationally controlled tumor protein for cell survival during organ growth in Drosophila. Cell Death Dis 2021; 12:811. [PMID: 34453033 PMCID: PMC8397738 DOI: 10.1038/s41419-021-04091-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 07/28/2021] [Accepted: 08/12/2021] [Indexed: 11/08/2022]
Abstract
Regulation of cell survival is critical for organ development. Translationally controlled tumor protein (TCTP) is a conserved protein family implicated in the control of cell survival during normal development and tumorigenesis. Previously, we have identified a human Topoisomerase II (TOP2) as a TCTP partner, but its role in vivo has been unknown. To determine the significance of this interaction, we examined their roles in developing Drosophila organs. Top2 RNAi in the wing disc leads to tissue reduction and caspase activation, indicating the essential role of Top2 for cell survival. Top2 RNAi in the eye disc also causes loss of eye and head tissues. Tctp RNAi enhances the phenotypes of Top2 RNAi. The depletion of Tctp reduces Top2 levels in the wing disc and vice versa. Wing size is reduced by Top2 overexpression, implying that proper regulation of Top2 level is important for normal organ development. The wing phenotype of Tctp RNAi is partially suppressed by Top2 overexpression. This study suggests that mutual regulation of Tctp and Top2 protein levels is critical for cell survival during organ development.
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12
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Bahrami A, A Ferns G. Effect of Curcumin and Its Derivates on Gastric Cancer: Molecular Mechanisms. Nutr Cancer 2020; 73:1553-1569. [PMID: 32814463 DOI: 10.1080/01635581.2020.1808232] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gastric carcinoma is one of the most prevalent malignancies and is associated with a high mortality. Chemotherapy is the principal therapeutic option in the treatment of gastric cancer, but its success rate is restricted by severe side effects and the prevalence of chemo-resistance. Curcumin is a polyphenolic compound derived from turmeric that has potent antioxidant, anti-inflammatory and anti-tumor effects. There is accumulating evidence that curcumin may prevent gastric cancer through regulation of oncogenic pathways. Furthermore some curcumin analogues and novel formulation of curcumin appear to have anti-tumor activity. The aim of this review was to give an overview of the therapeutic potential of curcumin and its derivatives against gastric cancer in preclinical and clinical studies.
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Affiliation(s)
- Afsane Bahrami
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Brighton, Sussex, UK
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13
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D’Amico S, Krasnowska EK, Manni I, Toietta G, Baldari S, Piaggio G, Ranalli M, Gambacurta A, Vernieri C, Di Giacinto F, Bernassola F, de Braud F, Lucibello M. DHA Affects Microtubule Dynamics Through Reduction of Phospho-TCTP Levels and Enhances the Antiproliferative Effect of T-DM1 in Trastuzumab-Resistant HER2-Positive Breast Cancer Cell Lines. Cells 2020; 9:E1260. [PMID: 32438775 PMCID: PMC7290969 DOI: 10.3390/cells9051260] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/13/2020] [Accepted: 05/16/2020] [Indexed: 12/11/2022] Open
Abstract
Trastuzumab emtansine (T-DM1) is an anti-human epidermal growth factor receptor 2 (HER2) antibody-drug conjugated to the microtubule-targeting agent emtansine (DM1). T-DM1 is an effective agent in the treatment of patients with HER2-positive breast cancer whose disease has progressed on the first-line trastuzumab containing chemotherapy. However, both primary and acquired tumour resistance limit its efficacy. Increased levels of the phosphorylated form of Translationally Controlled Tumour Protein (phospho-TCTP) have been shown to be associated with a poor clinical response to trastuzumab therapy in HER2-positive breast cancer. Here we show that phospho-TCTP is essential for correct mitosis in human mammary epithelial cells. Reduction of phospho-TCTP levels by dihydroartemisinin (DHA) causes mitotic aberration and increases microtubule density in the trastuzumab-resistant breast cancer cells HCC1954 and HCC1569. Combinatorial studies show that T-DM1 when combined with DHA is more effective in killing breast cells compared to the effect induced by any single agent. In an orthotopic breast cancer xenograft model (HCC1954), the growth of the tumour cells resumes after having achieved a complete response to T-DM1 treatment. Conversely, DHA and T-DM1 treatment induces a severe and irreversible cytotoxic effect, even after treatment interruption, thus, improving the long-term efficacy of T-DM1. These results suggest that DHA increases the effect of T-DM1 as poison for microtubules and supports the clinical development of the combination of DHA and T-DM1 for the treatment of aggressive HER2-overexpressing breast cancer.
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Affiliation(s)
- Silvia D’Amico
- National Research Council of Italy, Institute of Translational Pharmacology (IFT-CNR), 00133 Rome, Italy; (S.D.); (E.K.K.)
| | - Ewa Krystyna Krasnowska
- National Research Council of Italy, Institute of Translational Pharmacology (IFT-CNR), 00133 Rome, Italy; (S.D.); (E.K.K.)
| | - Isabella Manni
- UOSD SAFU, Department of Research, Diagnosis and Innovative Technologies, IRCCS-Regina Elena National Cancer Institute, 00144 Rome, Italy; (I.M.); (G.P.)
| | - Gabriele Toietta
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, 00144 Rome, Italy; (G.T.); (S.B.)
| | - Silvia Baldari
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, 00144 Rome, Italy; (G.T.); (S.B.)
| | - Giulia Piaggio
- UOSD SAFU, Department of Research, Diagnosis and Innovative Technologies, IRCCS-Regina Elena National Cancer Institute, 00144 Rome, Italy; (I.M.); (G.P.)
| | - Marco Ranalli
- Department of Experimental Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy; (M.R.); (A.G.); (F.B.)
| | - Alessandra Gambacurta
- Department of Experimental Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy; (M.R.); (A.G.); (F.B.)
| | - Claudio Vernieri
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.V.); (F.d.B.)
- IFOM, the FIRC Institute of Molecular Oncology, 20139 Milan, Italy
| | - Flavio Di Giacinto
- Department of Neuroscience, Università Cattolica del Sacro Cuore, 00168 Roma, Italy;
| | - Francesca Bernassola
- Department of Experimental Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy; (M.R.); (A.G.); (F.B.)
| | - Filippo de Braud
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.V.); (F.d.B.)
- Oncology and Hemato-Oncology Department, University of Milan, 20122 Milan, Italy
| | - Maria Lucibello
- National Research Council of Italy, Institute of Translational Pharmacology (IFT-CNR), 00133 Rome, Italy; (S.D.); (E.K.K.)
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14
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Abstract
This chapter focuses on published studies specifically concerning TCTP and its involvement in degradation or stabilization of various proteins, and also in its own degradation in different ways. The first part relates to the inhibition of proteasomal degradation of proteins. This can be achieved by masking ubiquitination sites of specific partners, by favoring ubiquitin E3 ligase degradation, or by regulating proteasome activity. The second part addresses the ability of TCTP to favor degradation of specific proteins through proteasome or macroautophagic pathways. The third part discusses about the different ways by which TCTP has been shown to be degraded.
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MacDonald SM. History of Histamine-Releasing Factor (HRF)/Translationally Controlled Tumor Protein (TCTP) Including a Potential Therapeutic Target in Asthma and Allergy. Results Probl Cell Differ 2019; 64:291-308. [PMID: 29149416 DOI: 10.1007/978-3-319-67591-6_16] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Histamine-releasing factor (HRF) also known as translationally controlled tumor protein (TCTP) is a highly conserved, ubiquitous protein that has both intracellular and extracellular functions. Here we will highlight the subcloning of the molecule, its clinical implications, as well as an inducible-transgenic mouse. Particular attention will be paid to its extracellular functioning and its potential role as a therapeutic target in asthma and allergy. The cells and the cytokines that are produced when stimulated or primed by HRF/TCTP will be detailed as well as the downstream signaling pathway that HRF/TCTP elicits. While it was originally thought that HRF/TCTP interacted with IgE, the finding that cells not binding IgE also respond to HRF/TCTP called this interaction into question. HRF/TCTP or at least its mouse counterpart appears to interact with some, but not all IgE and IgG molecules. HRF/TCTP has been shown to activate multiple human cells including basophils, eosinophils, T cells, and B cells. Since many of the cells that are activated by HRF/TCTP participate in the allergic response, the extracellular functions of HRF/TCTP could exacerbate the allergic, inflammatory cascade. Particularly exciting is that small molecule agonists of the phosphatase SHIP-1 have been shown to modulate the P13 kinase/AKT pathway and may control inflammatory disorders. This review discusses this possibility in light of HRF/TCTP.
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Affiliation(s)
- Susan M MacDonald
- The Johns Hopkins Asthma and Allergy Center, 5501 Hopkins Bayview Circle, Room 3B.69, Baltimore, MD, 21224, USA.
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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16
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Translationally controlled tumor protein (TCTP) plays a pivotal role in cardiomyocyte survival through a Bnip3-dependent mechanism. Cell Death Dis 2019; 10:549. [PMID: 31320615 PMCID: PMC6639386 DOI: 10.1038/s41419-019-1787-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/10/2019] [Accepted: 06/21/2019] [Indexed: 12/13/2022]
Abstract
Prevention of cardiomyocyte death is an important therapeutic strategy for heart failure. In this study, we focused on translationally controlled tumor protein (TCTP), a highly conserved protein that is expressed ubiquitously in mammalian tissues, including heart. TCTP plays pivotal roles in survival of certain cell types, but its function in cardiomyocytes has not been examined. We aimed to clarify the role of TCTP in cardiomyocyte survival and the underlying mechanism. Here, we demonstrated that downregulation of TCTP with siRNA induced cell death of cardiomyocytes with apoptotic and autophagic features, accompanied with mitochondrial permeability transition pore (mPTP) opening. TCTP loss did not induce cell death of cardiac fibroblasts. Bcl-2/adenovirus E1B 19-kDa interacting protein 3 (Bnip3) was found to mediate the TCTP-loss-induced cardiomyocyte death. In exploring the clinical significance of the TCTP expression in the heart, we found that DOX treatment markedly downregulated the protein expression of TCTP in cultured cardiomyocytes and in mouse heart tissue. Exogenous rescue of TCTP expression attenuated DOX-induced cardiomyocyte death. In mice, cardiomyocyte-specific overexpression of TCTP resulted in decreased susceptibility to DOX-induced cardiac dysfunction, accompanied with attenuated induction of Bnip3. Dihydroartemisinin, a pharmacological TCTP inhibitor, induced development of heart failure and cardiomyocyte death in control mice, but not in mice with cardiomyocyte-specific TCTP overexpression. Our findings revealed TCTP has a pivotal role in cardiomyocyte survival, at least in part through a Bnip3-dependent mechanism. TCTP could be considered as a candidate therapeutic target to prevent DOX-induced heart failure.
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17
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Jian M, Du Q, Zhu D, Mao Z, Wang X, Feng Y, Xiao Z, Wang H, Zhu Y. Tumor suppressor miR-145-5p sensitizes prolactinoma to bromocriptine by downregulating TPT1. J Endocrinol Invest 2019; 42:639-652. [PMID: 30370446 DOI: 10.1007/s40618-018-0963-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 10/01/2018] [Indexed: 01/27/2023]
Abstract
PURPOSE Prolactinoma is the most commonly seen secretory tumor of pituitary glands, which accounts for approximately up to 40% of total pituitary adenomas. Due to its high drug resistance, dopamine agonist, such as bromocriptine, has limited effect on the treatment of patients with prolactinoma. Recent discoveries have revealed that multiple miRNAs were involved in regulating drug resistance. In this research, we explored the relationship between miR-145-5p expression as well as bromocriptine sensitivity both in vitro and in vivo. METHODS To study the role of miR-145-5p in drug resistance of prolactinoma, the expression levels of miR-145-5p in bromocriptine-resistant prolactinoma cell line MMQ/BRC and its parental cell line MMQ cells, 24 bromocriptine-resistant as well as eight sensitive clinical samples were measured by qRT-PCR. Moreover, CCK8, flow cytometry and immunofluorescence were performed to identify the biological characteristics of MMQ/BRC and MMQ. TPT1 was predicted as a direct target gene of miR-145-5p by bioinformatic methods. In addition, qRT-PCR, western blot and immunohistochemistry were used to detect the expression level of TPT1 in clinical specimens and cell lines. Xenograft mouse model was constructed to analyze whether miR-145-5p could reverse bromocriptine resistance in prolactinoma in vivo. RESULTS In our study, bromocriptine-resistant prolactinoma clinical samples and cell line had decreased miR-145-5p levels and expressed high levels of TPT1 compared with their sensitive counterparts. Bioinformatic methods and our preliminary dual luciferase reporter assay were utilized to elucidate that TPT1 was a direct target gene of miR-145-5p. Furthermore, introducing miR-145-5p mimic into MMQ cells led to a decrease of IC50 along with upregulation of TPT1; nevertheless, transfecting the corresponding inhibitor into MMQ cells resulted in an upregulation of IC50 as well as reduction of TPT1. CONCLUSIONS Collectively, our findings elucidated the role of miR-145-5p as an important regulator of drug resistance in prolactinoma by controlling TPT1, and implicated the potential application of miR-145-5p in cancer therapy as well.
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Affiliation(s)
- M Jian
- Department of Histology and Embryology, Medical School of Sun Yat-sen University, No. 74, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Q Du
- Department of Histology and Embryology, Medical School of Sun Yat-sen University, No. 74, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - D Zhu
- Department of Neurosurgery and Pituitary Tumor Center, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Z Mao
- Department of Neurosurgery and Pituitary Tumor Center, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - X Wang
- Department of Histology and Embryology, Medical School of Sun Yat-sen University, No. 74, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Y Feng
- Department of Histology and Embryology, Medical School of Sun Yat-sen University, No. 74, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - Z Xiao
- Department of Neurosurgery and Pituitary Tumor Center, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China
| | - H Wang
- Department of Neurosurgery and Pituitary Tumor Center, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China.
| | - Y Zhu
- Department of Histology and Embryology, Medical School of Sun Yat-sen University, No. 74, Zhongshan Road 2, Guangzhou, 510080, Guangdong, China.
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18
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Ulambayar B, Lee H, Yang EM, Park HS, Lee K, Ye YM. Dimerized, Not Monomeric, Translationally Controlled Tumor Protein Induces Basophil Activation and Mast Cell Degranulation in Chronic Urticaria. Immune Netw 2019; 19:e20. [PMID: 31281717 PMCID: PMC6597440 DOI: 10.4110/in.2019.19.e20] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/31/2019] [Accepted: 04/05/2019] [Indexed: 01/01/2023] Open
Abstract
Translationally controlled tumor protein (TCTP) is also known as histamine releasing factor as it has the ability to activate mast cells. To investigate the role of TCTP in the pathogenesis of chronic spontaneous urticaria (CSU), we evaluated serum level of TCTP and effect of TCTP on basophil and mast cell degranulation. TCTP levels in the sera from 116 CSU patients and 70 normal healthy controls (NCs) were measured by ELISA. CD203c expression on basophils from CSU patients and β-hexosaminidase release from Laboratory of Allergic Disease 2 mast cells were measured upon stimulation monomeric and dimeric TCTP. Non-reducing Western blot analysis was used for detecting dimeric TCTP. No difference was observed in serum TCTP levels between CSU patients and NCs (p=0.676). However, dimeric TCTP intensity on Western blot was stronger in CSU patients than in NCs. TCTP levels were higher in patients with severe CSU (p=0.049) and with IgG positivity to FcɛRIα (p=0.038). A significant positive correlation was observed between TCTP and eosinophil cationic protein levels (Spearman's rho=0.341; p=0.001). Both basophil and mast cell degranulation were significantly increased after stimulation with dimeric TCTP, but not with monomic TCTP. The ability of TCTP to activate basophil and mast cells is dependent on dimerization, suggesting that the inhibition of TCTP dimerization can be a therapeutic option for CSU. Association between TCTP levels and the presence of IgG to high affinity Fc epsilon receptor I alpha subunit in CSU patients indicates that autoimmune mechanisms may be involved in the dimerization of TCTP.
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Affiliation(s)
- Bastsetseg Ulambayar
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon 16499, Korea
| | - Heewon Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Eun-Mi Yang
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon 16499, Korea
| | - Hae-Sim Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon 16499, Korea
| | - Kyunglim Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Young-Min Ye
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon 16499, Korea
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19
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Ferrer E, Dunmore BJ, Hassan D, Ormiston ML, Moore S, Deighton J, Long L, Yang XD, Stewart DJ, Morrell NW. A Potential Role for Exosomal Translationally Controlled Tumor Protein Export in Vascular Remodeling in Pulmonary Arterial Hypertension. Am J Respir Cell Mol Biol 2019; 59:467-478. [PMID: 29676587 DOI: 10.1165/rcmb.2017-0129oc] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is characterized by increased proliferation and resistance to apoptosis of pulmonary vascular cells. Increased expression of translationally controlled tumor protein (TCTP), a prosurvival and antiapoptotic mediator, has recently been demonstrated in patients with heritable PAH; however, its role in the pathobiology of PAH remains unclear. Silencing of TCTP in blood outgrowth endothelial cells (BOECs) isolated from control subjects led to significant changes in morphology, cytoskeletal organization, increased apoptosis, and decreased directionality during migration. Because TCTP is also localized in extracellular vesicles, we isolated BOEC-derived extracellular vesicles (exosomes and microparticles) by sequential ultracentrifugation. BOECs isolated from patients harboring BMPR2 mutations released more exosomes than those derived from control subjects in proapoptotic conditions. Furthermore, TCTP expression was significantly higher in exosomes than in microparticles, indicating that TCTP is mainly exported via exosomes. Coculture assays demonstrated that exosomes transferred TCTP from ECs to pulmonary artery smooth muscle cells, suggesting a role for endothelial-derived TCTP in conferring proliferation and apoptotic resistance. In an experimental model of PAH, rats treated with monocrotaline demonstrated increased concentrations of TCTP in the lung and plasma. Consistent with this finding, we observed increased circulating TCTP levels in patients with idiopathic PAH compared with control subjects. Therefore, our data suggest an important role for TCTP in regulating the critical vascular cell phenotypes that have been implicated in the pathobiology of PAH. In addition, this research implicates TCTP as a potential biomarker for the onset and development of PAH.
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Affiliation(s)
- Elisabet Ferrer
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Benjamin J Dunmore
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Dhiya Hassan
- 2 Department of Cellular and Molecular Medicine, Faculty of Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada; and
| | - Mark L Ormiston
- 3 Department of Biomedical and Molecular Sciences.,4 Department of Medicine, and.,5 Department of Surgery, Queen's University, Kingston, Ontario, Canada
| | - Stephen Moore
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - John Deighton
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Lu Long
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Xu Dong Yang
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Duncan J Stewart
- 2 Department of Cellular and Molecular Medicine, Faculty of Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada; and
| | - Nicholas W Morrell
- 1 Addenbrooke's Hospital, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
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Yao X, Liu YJ, Cui Q, Feng Y. Solution structure of a unicellular microalgae-derived translationally controlled tumor protein revealed both conserved features and structural diversity. Arch Biochem Biophys 2019; 665:23-29. [PMID: 30797749 DOI: 10.1016/j.abb.2019.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/16/2019] [Accepted: 02/18/2019] [Indexed: 10/27/2022]
Abstract
Translationally controlled tumor proteins (TCTPs) are eukaryote-conserved multifunctional proteins, but their primary functions are not well understood yet. Study on TCTP from unicellular species may provide insight into the primary function of the TCTP family. Bioinformatic analysis indicated that the TCTP from Nannochloropsis oceanica (NoTCTP), a model unicellular microalga for biodiesel and polyunsaturated fatty acid production, has low sequence homology to other structure-known TCTPs and two TCTP signature patterns are not detected in NoTCTP. Hence, we determined the solution structure of NoTCTP. The overall structure of NoTCTP, including a long flexible loop, a β-barrel subdomain, and a helical subdomain, is generally similar to other TCTP structures. NoTCTP has a eukaryote-conserved surface for the binding of eukaryotic elongation factor 1B, confirming that TCTP is involved in protein synthesis, which is one of the primary functions of TCTP. Additionally, NoTCTP has distinct features different from other TCTPs. NoTCTP structure lacks a short α-helix which exists in all other known TCTP structures. The helical subdomain and some loops of NoTCTP also have distinct conformations among the TCTP family proteins. Therefore, our study on NoTCTP revealed not only conserved structural features but also the structural diversity of TCTP family proteins.
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Affiliation(s)
- Xingzhe Yao
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ya-Jun Liu
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Qiu Cui
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yingang Feng
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; Qingdao Engineering Laboratory of Single Cell Oil, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
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21
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Kim AR, Sung JY, Rho SB, Kim YN, Yoon K. Suppressor of Variegation 3-9 Homolog 2, a Novel Binding Protein of Translationally Controlled Tumor Protein, Regulates Cancer Cell Proliferation. Biomol Ther (Seoul) 2019; 27:231-239. [PMID: 30763986 PMCID: PMC6430221 DOI: 10.4062/biomolther.2019.021] [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: 01/30/2019] [Revised: 02/07/2019] [Accepted: 02/07/2019] [Indexed: 12/23/2022] Open
Abstract
Suppressor of Variegation 3-9 Homolog 2 (SUV39H2) methylates the lysine 9 residue of histone H3 and induces heterochromatin formation, resulting in transcriptional repression or silencing of target genes. SUV39H1 and SUV39H2 have a role in embryonic development, and SUV39H1 was shown to suppress cell cycle progression associated with Rb. However, the function of human SUV39H2 has not been extensively studied. We observed that forced expression of SUV39H2 decreased cell proliferation by inducing G1 cell cycle arrest. In addition, SUV39H2 was degraded through the ubiquitin-proteasomal pathway. Using yeast two-hybrid screening to address the degradation mechanism and function of SUV39H2, we identified translationally controlled tumor protein (TCTP) as an SUV39H2-interacting molecule. Mapping of the interacting regions indicated that the N-terminal 60 amino acids (aa) of full-length SUV39H2 and the C-terminus of TCTP (120-172 aa) were critical for binding. The interaction of SUV39H2 and TCTP was further confirmed by co-immunoprecipitation and immunofluorescence staining for colocalization. Moreover, depletion of TCTP by RNAi led to up-regulation of SUV39H2 protein, while TCTP overexpression reduced SUV39H2 protein level. The half-life of SUV39H2 protein was significantly extended upon TCTP depletion. These results clearly indicate that TCTP negatively regulates the expression of SUV39H2 post-translationally. Furthermore, SUV39H2 induced apoptotic cell death in TCTP-knockdown cells. Taken together, we identified SUV39H2, as a novel target protein of TCTP and demonstrated that SUV39H2 regulates cell proliferation of lung cancer cells.
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Affiliation(s)
- A-Reum Kim
- Division of Translational Science, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Jee Young Sung
- Division of Clinical Research, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Seung Bae Rho
- Division of Translational Science, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Yong-Nyun Kim
- Division of Translational Science, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
| | - Kyungsil Yoon
- Division of Translational Science, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea
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22
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Kobayashi D, Tokuda T, Sato K, Okanishi H, Nagayama M, Hirayama-Kurogi M, Ohtsuki S, Araki N. Identification of a Specific Translational Machinery via TCTP-EF1A2 Interaction Regulating NF1-associated Tumor Growth by Affinity Purification and Data-independent Mass Spectrometry Acquisition (AP-DIA). Mol Cell Proteomics 2019; 18:245-262. [PMID: 30381327 PMCID: PMC6356078 DOI: 10.1074/mcp.ra118.001014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/17/2018] [Indexed: 11/06/2022] Open
Abstract
Neurofibromatosis type 1 (NF1) is an autosomal dominant disease that predisposes individuals to developing benign neurofibromas and malignant peripheral nerve sheath tumors (MPNST). The mechanism of NF1-tumorigenesis or the curatives have not been established. Using unique trascriptome and proteome integration method, iPEACH (1), we previously identified translationally controlled tumor protein (TCTP) as a novel biological target for NF1-associated tumors (2). Here, we identified specific TCTP-interacting proteins by sequential affinity purification and data-independent mass spectrometry acquisition (AP-DIA/SWATH) to investigate the role of TCTP in NF1-associated malignant tumors. TCTP mainly interacts with proteins related to protein synthesis and especially to elongation factor complex components, including EF1A2, EF1B, EF1D, EF1G, and valyl-tRNA synthetase (VARS), in NF1-deficient malignant tumor cells. Interestingly, TCTP preferentially binds to EF1A2 (normally found only in neural and skeletal-muscle cells and several cancer cells), rather than EF1A1 despite the high homologies (98%) in their sequences. The docking simulation and further validations to study the interaction between TCTP and EF1A2 revealed that TCTP directly binds with EF1A2 via the contact areas of EF1A2 dimerization. Using unique and common sequences between EF1A2 and EF1A1 in AP-DIA/SWATH, we quantitatively validated the interaction of EF1A2 and TCTP/other elongation factors and found that TCTP coordinates the translational machinery of elongation factors via the association with EF1A2. These data suggest that TCTP activates EF1A2-dependent translation by mediating complex formation with other elongation factors. Inhibiting the TCTP-EF1A2 interaction with EF1A2 siRNAs or a TCTP inhibitor, artesunate, significantly down-regulated the factors related to protein translation and caused dramatic suppression of growth/translation in NF1-associated tumors. Our findings demonstrate that a specific protein translation machinery related to the TCTP-EF1A2 interaction is functionally implicated in the tumorigenesis and progression of NF1-associated tumors and could represent a therapeutic target.
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Affiliation(s)
- Daiki Kobayashi
- Department of Tumor Genetics and Biology, Graduate School of Medical Sciences, Faculty of Life Sciences
| | - Takaho Tokuda
- Department of Tumor Genetics and Biology, Graduate School of Medical Sciences, Faculty of Life Sciences
| | - Kyosuke Sato
- Department of Molecular Physiology, Faculty of Life Sciences
| | - Hiroki Okanishi
- Department of Tumor Genetics and Biology, Graduate School of Medical Sciences, Faculty of Life Sciences
| | - Megumi Nagayama
- Department of Tumor Genetics and Biology, Graduate School of Medical Sciences, Faculty of Life Sciences
| | - Mio Hirayama-Kurogi
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University
| | - Sumio Ohtsuki
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University
| | - Norie Araki
- Department of Tumor Genetics and Biology, Graduate School of Medical Sciences, Faculty of Life Sciences,.
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23
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Gouveia Roque C, Holt CE. Growth Cone Tctp Is Dynamically Regulated by Guidance Cues. Front Mol Neurosci 2018; 11:399. [PMID: 30459552 PMCID: PMC6232380 DOI: 10.3389/fnmol.2018.00399] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 10/12/2018] [Indexed: 12/19/2022] Open
Abstract
Translationally controlled tumor protein (Tctp) contributes to retinal circuitry formation by promoting axon growth and guidance, but it remains unknown to what extent axonal Tctp specifically influences axon development programs. Various genome-wide profiling studies have ranked tctp transcripts among the most enriched in the axonal compartment of distinct neuronal populations, including embryonic retinal ganglion cells (RGCs), suggesting its expression can be regulated locally and that this may be important during development. Here, we report that growth cone Tctp levels change rapidly in response to Netrin-1 and Ephrin-A1, two guidance cues encountered by navigating RGC growth cones. This regulation is opposite in effect, as we observed protein synthesis- and mTORC1-dependent increases in growth cone Tctp levels after acute treatment with Netrin-1, but a decline upon exposure to Ephrin-A1, an inhibitor of mTORC1. Live imaging with translation reporters further showed that Netrin-1-induced synthesis of Tctp in growth cones is driven by a short 3'untranslated region (3'UTR) tctp mRNA isoform. However, acute inhibition of de novo Tctp synthesis in axons did not perturb the advance of retinal projections through the optic tract in vivo, indicating that locally produced Tctp is not necessary for normal axon growth and guidance.
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Affiliation(s)
- Cláudio Gouveia Roque
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom.,Doctoral Programme in Experimental Biology and Biomedicine, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Christine E Holt
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
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Qi D, Chao Y, Wu R, Xia M, Chen Q, Zheng Z. Transcriptome Analysis Provides Insights Into the Adaptive Responses to Hypoxia of a Schizothoracine Fish ( Gymnocypris eckloni). Front Physiol 2018; 9:1326. [PMID: 30298021 PMCID: PMC6160557 DOI: 10.3389/fphys.2018.01326] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 09/03/2018] [Indexed: 01/12/2023] Open
Abstract
The schizothoracine fish endemic to the Qinghai-Tibetan Plateau are comparatively well adapted to aquatic environments with low oxygen partial pressures. However, few studies have used transcriptomic profiling to investigate the adaptive responses of schizothoracine fish tissues to hypoxic stress. This study compared the transcriptomes of Gymnocypris eckloni subjected to 72 h of hypoxia (Dissolved oxygen, DO = 3.0 ± 0.1 mg/L) to those of G. eckloni under normoxia (DO = 8.4 ± 0.1 mg/L). To identify the potential genes and pathways activated in response to hypoxic stress, we collected muscle, liver, brain, heart, and blood samples from normoxic and hypoxic fish for RNA-Seq analysis. We annotated 337,481 gene fragments. Of these, 462 were differentially expressed in the hypoxic fish as compared to the normoxic fish. Under hypoxia, the transcriptomic profiles of the tissues differed, with muscle the most strongly affected by hypoxia. Our data indicated that G. eckloni underwent adaptive changes in gene expression in response to hypoxia. Several strategies used by G. eckloni to cope with hypoxia were similar to those used by other fish, including a switch from aerobic oxidation to anaerobic glycolysis and the suppression of major energy-requiring processes. However, G. eckloni used an additional distinct strategy to survive hypoxic environments: a strengthening of the antioxidant system and minimization of ischemic injury. Here, we identified several pathways and related genes involved in the hypoxic response of the schizothoracine fish. This study provides insights into the mechanisms used by schizothoracine fish to adapt to hypoxic environments.
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Affiliation(s)
- Delin Qi
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Yan Chao
- Animal Science Department, Agriculture and Animal Husbandry College, Qinghai University, Xining, China
| | - Rongrong Wu
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Mingzhe Xia
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Qichang Chen
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Zhiqin Zheng
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
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Eldakak M, Das A, Zhuang Y, Rohila JS, Glover K, Yen Y. A Quantitative Proteomics View on the Function of Qfhb1, a Major QTL for Fusarium Head Blight Resistance in Wheat. Pathogens 2018; 7:E58. [PMID: 29932155 PMCID: PMC6161305 DOI: 10.3390/pathogens7030058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 12/18/2022] Open
Abstract
Fusarium head blight (FHB) is a highly detrimental disease of wheat. A quantitative trait locus for FHB resistance, Qfhb1, is the most utilized source of resistance in wheat-breeding programs, but very little is known about its resistance mechanism. In this study, we elucidated a prospective FHB resistance mechanism by investigating the proteomic signatures of Qfhb1 in a pair of contrasting wheat near-isogenic lines (NIL) after 24 h of inoculation of wheat florets by Fusarium graminearum. Statistical comparisons of the abundances of protein spots on the 2D-DIGE gels of contrasting NILs (fhb1+ NIL = Qfhb1 present; fhb1- NIL = Qfhb1 absent) enabled us to select 80 high-ranking differentially accumulated protein (DAP) spots. An additional evaluation confirmed that the DAP spots were specific to the spikelet from fhb1- NIL (50 spots), and fhb1+ NIL (seven spots). The proteomic data also suggest that the absence of Qfhb1 makes the fhb1- NIL vulnerable to Fusarium attack by constitutively impairing several mechanisms including sucrose homeostasis by enhancing starch synthesis from sucrose. In the absence of Qfhb1, Fusarium inoculations severely damaged photosynthetic machinery; altered the metabolism of carbohydrates, nitrogen and phenylpropanoids; disrupted the balance of proton gradients across relevant membranes; disturbed the homeostasis of many important signaling molecules induced the mobility of cellular repair; and reduced translational activities. These changes in the fhb1- NIL led to strong defense responses centered on the hypersensitive response (HSR), resulting in infected cells suicide and the consequent initiation of FHB development. Therefore, the results of this study suggest that Qfhb1 largely functions to either alleviate HSR or to manipulate the host cells to not respond to Fusarium infection.
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Affiliation(s)
- Moustafa Eldakak
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57006, USA.
- Genetics Department, College of Agriculture, Alexandria University, Alexandria 21526, Egypt.
| | - Aayudh Das
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57006, USA.
- Department of Plant Biology, University of Vermont, Burlington, VT 05405, USA.
| | - Yongbin Zhuang
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57006, USA.
- College of Agronomy, Shandong Agricultural University, Taian 271018, China.
| | - Jai S Rohila
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57006, USA.
- Department of Agronomy, Horticulture, and Plant Science, South Dakota State University, Brookings, SD 57006, USA.
- Dale Bumpers National Rice Research Center, Stuttgart, AR 72160, USA.
| | - Karl Glover
- Department of Agronomy, Horticulture, and Plant Science, South Dakota State University, Brookings, SD 57006, USA.
| | - Yang Yen
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57006, USA.
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Some Biological Consequences of the Inhibition of Na,K-ATPase by Translationally Controlled Tumor Protein (TCTP). Int J Mol Sci 2018; 19:ijms19061657. [PMID: 29867020 PMCID: PMC6032315 DOI: 10.3390/ijms19061657] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 12/17/2022] Open
Abstract
Na,K-ATPase is an ionic pump that regulates the osmotic equilibrium and membrane potential of cells and also functions as a signal transducer. The interaction of Na,K-ATPase with translationally controlled tumor protein (TCTP) results, among others, in the inhibition of the former's pump activity and in the initiation of manifold biological and pathological phenomena. These phenomena include hypertension and cataract development in TCTP-overexpressing transgenic mice, as well as the induction of tumorigenesis signaling pathways and the activation of Src that ultimately leads to cell proliferation and migration. This review attempts to collate the biological effects of Na,K-ATPase and TCTP interaction and suggests that this interaction has the potential to serve as a possible therapeutic target for selected diseases.
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Jojic B, Amodeo S, Bregy I, Ochsenreiter T. Distinct 3' UTRs regulate the life-cycle-specific expression of two TCTP paralogs in Trypanosoma brucei. J Cell Sci 2018; 131:jcs.206417. [PMID: 29661850 PMCID: PMC5992589 DOI: 10.1242/jcs.206417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 03/28/2018] [Indexed: 12/02/2022] Open
Abstract
The translationally controlled tumor protein (TCTP; also known as TPT1 in mammals) is highly conserved and ubiquitously expressed in eukaryotes. It is involved in growth and development, cell cycle progression, protection against cellular stresses and apoptosis, indicating the multifunctional role of the protein. Here, for the first time, we characterize the expression and function of TCTP in the human and animal pathogen, Trypanosoma brucei. We identified two paralogs (TCTP1 and TCTP2) that are differentially expressed in the life cycle of the parasite. The genes have identical 5′ untranslated regions (UTRs) and almost identical open-reading frames. The 3′UTRs differ substantially in sequence and length, and are sufficient for the exclusive expression of TCTP1 in procyclic- and TCTP2 in bloodstream-form parasites. Furthermore, we characterize which parts of the 3′UTR are needed for TCTP2 mRNA stability. RNAi experiments demonstrate that TCTP1 and TCTP2 expression is essential for normal cell growth in procyclic- and bloodstream-form parasites, respectively. Depletion of TCTP1 in the procyclic form cells leads to aberrant cell and mitochondrial organelle morphology, as well as enlarged, and a reduced number of, acidocalcisomes. Summary:T. brucei has two TCTP genes that are differentially expressed during the parasite life cycle owing to their different 3′UTRs. TCTP also has a role in regulating cell growth and morphology.
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Affiliation(s)
- Borka Jojic
- Institute of Cell Biology, University of Bern, Bern 3012, Switzerland
| | - Simona Amodeo
- Institute of Cell Biology, University of Bern, Bern 3012, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern 3012, Switzerland
| | - Irina Bregy
- Institute of Cell Biology, University of Bern, Bern 3012, Switzerland
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Malard F, Assrir N, Alami M, Messaoudi S, Lescop E, Ha-Duong T. Conformational Ensemble and Biological Role of the TCTP Intrinsically Disordered Region: Influence of Calcium and Phosphorylation. J Mol Biol 2018; 430:1621-1639. [DOI: 10.1016/j.jmb.2018.04.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/19/2018] [Accepted: 04/22/2018] [Indexed: 01/09/2023]
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29
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Nicosia A, Bennici C, Biondo G, Costa S, Di Natale M, Masullo T, Monastero C, Ragusa MA, Tagliavia M, Cuttitta A. Characterization of Translationally Controlled Tumour Protein from the Sea Anemone Anemonia viridis and Transcriptome Wide Identification of Cnidarian Homologues. Genes (Basel) 2018; 9:genes9010030. [PMID: 29324689 PMCID: PMC5793182 DOI: 10.3390/genes9010030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/05/2018] [Accepted: 01/05/2018] [Indexed: 02/06/2023] Open
Abstract
Gene family encoding translationally controlled tumour protein (TCTP) is defined as highly conserved among organisms; however, there is limited knowledge of non-bilateria. In this study, the first TCTP homologue from anthozoan was characterised in the Mediterranean Sea anemone, Anemonia viridis. The release of the genome sequence of Acropora digitifera, Exaiptasia pallida, Nematostella vectensis and Hydra vulgaris enabled a comprehensive study of the molecular evolution of TCTP family among cnidarians. A comparison among TCTP members from Cnidaria and Bilateria showed conserved intron exon organization, evolutionary conserved TCTP signatures and 3D protein structure. The pattern of mRNA expression profile was also defined in A. viridis. These analyses revealed a constitutive mRNA expression especially in tissues with active proliferation. Additionally, the transcriptional profile of A. viridis TCTP (AvTCTP) after challenges with different abiotic/biotic stresses showed induction by extreme temperatures, heavy metals exposure and immune stimulation. These results suggest the involvement of AvTCTP in the sea anemone defensome taking part in environmental stress and immune responses.
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Affiliation(s)
- Aldo Nicosia
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Carmelo Bennici
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Girolama Biondo
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Salvatore Costa
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 16, 90128 Palermo, Sicily, Italy.
| | - Marilena Di Natale
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Tiziana Masullo
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Calogera Monastero
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Maria Antonietta Ragusa
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 16, 90128 Palermo, Sicily, Italy.
| | - Marcello Tagliavia
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
| | - Angela Cuttitta
- National Research Council-Institute for Marine and Coastal Environment (IAMC-CNR), Laboratory of Molecular Ecology and Biotechnology, Detached Unit of Capo Granitola, Via del mare, 91021 Torretta Granitola (TP), Sicily, Italy.
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30
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Wang L, Tang Y, Zhao M, Mao S, Wu L, Liu S, Liu D, Zhao G, Wang X. Knockdown of translationally controlled tumor protein inhibits growth, migration and invasion of lung cancer cells. Life Sci 2017; 193:292-299. [PMID: 28970113 DOI: 10.1016/j.lfs.2017.09.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/10/2017] [Accepted: 09/27/2017] [Indexed: 01/10/2023]
Abstract
AIM To investigate the role of translationally controlled tumor protein (TCTP) in lung cancer development. MAIN METHODS A549 and HCC827 cells were transfected with shRNA specifically targeting TCTP mRNA. Cell growth was assessed by colony formation assay and cell counting kit-8. Cell cycle and apoptosis were analyzed by flow cytometry. Cell migration and invasion was measured by scratch and transwell assays. In vivo tumorigenicity was evaluated by tumor xenografts in nude mice. KEY FINDINGS TCTP-silenced cells displayed a reduced ability of colony formation and a lower rate of proliferation in vitro. Knockdown of TCTP arrested cell cycle at G1 phase and led to downregulated expression of cyclins B1, D1 and E. Moreover, silencing of TCTP induced apoptosis and altered the levels of apoptosis-regulatory proteins such as cleaved caspase-3, Bcl-2, Bax and p53. Silencing of TCTP also inhibited migration and invasion of lung cancer cells. In addition, TCTP-silenced A549 cells, when subcutaneously inoculated in nude mice, formed tumors at a significantly slower rate. SIGNIFICANCE Our in vitro and in vivo data indicate that silencing of TCTP inhibits growth, migration and invasion of lung cancer cells. Thus, TCTP may be a potential target for lung cancer therapy.
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Affiliation(s)
- Lingling Wang
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | - Yufu Tang
- Department of Hepatobiliary Surgery, The General Hospital of Shenyang Military Area Command, Shenyang 110016, People's Republic of China
| | - Mingjing Zhao
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | - Shitao Mao
- Department of Hepatobiliary Surgery, The General Hospital of Shenyang Military Area Command, Shenyang 110016, People's Republic of China
| | - Lijian Wu
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | - Shuo Liu
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | - Dan Liu
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | - Guangdan Zhao
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | - Xiaoge Wang
- Department of Respiratory Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China.
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Mishra DK, Srivastava P, Sharma A, Prasad R, Bhuyan SK, Malage R, Kumar P, Yadava PK. Translationally controlled tumor protein (TCTP) is required for TGF-β1 induced epithelial to mesenchymal transition and influences cytoskeletal reorganization. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1865:67-75. [PMID: 28958626 DOI: 10.1016/j.bbamcr.2017.09.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/20/2017] [Accepted: 09/22/2017] [Indexed: 12/27/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is a programed course of developmental changes resulting in the acquisition of invasiveness and mobility in cells. In cancer, this course is used by epithelial cells to attain movability. Translationally controlled tumor protein (TCTP) has been extensively characterized following the observation on tumor reversion ensuing its depletion. However, the role of TCTP in cancer progression is still elusive. Here, we demonstrate for the first time that TCTP is a target of transforming growth factor-β1 (TGF-β1), a key regulator of EMT in A549 cells. We here present changes in expression patterns of intermediate filament markers (vimentin and cytokeratin 18a) of EMT following TCTP knockdown or over expression. The TCTP over-expression in cancer cells is associated with mesenchymal characters, while downregulation promotes the epithelial markers in the cells. Interaction of TCTP with β-catenin seems to stabilize β-catenin, preparative to its nuclear localization highlighting a role for β-catenin signaling in EMT. Moreover, the induction of urokinase plasminogen activator (uPA) following ectopic expression of TCTP leads to destabilization of ECM. The cells knocked down for TCTP show diminished invasiveness and migration under TGF-β1 treatment. The present results for the first time demonstrate that TGF-β1 dependent TCTP expression is required for EMT in cells.
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Affiliation(s)
- Deepak Kumar Mishra
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Pratibha Srivastava
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Amod Sharma
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ramraj Prasad
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Soubhagya Kumar Bhuyan
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rahuldev Malage
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Pramod Kumar
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Pramod Kumar Yadava
- Applied Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
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32
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Li Y, Sun H, Zhang C, Liu J, Zhang H, Fan F, Everley RA, Ning X, Sun Y, Hu J, Liu J, Zhang J, Ye W, Qiu X, Dai S, Liu B, Xu H, Fu S, Gygi SP, Zhou C. Identification of translationally controlled tumor protein in promotion of DNA homologous recombination repair in cancer cells by affinity proteomics. Oncogene 2017; 36:6839-6849. [PMID: 28846114 PMCID: PMC5735297 DOI: 10.1038/onc.2017.289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 06/09/2017] [Accepted: 07/13/2017] [Indexed: 01/21/2023]
Abstract
Translationally controlled tumor protein(TCTP) has been implicated in the regulation of apoptosis, DNA repair and drug resistance. However, the underlying molecular mechanisms are poorly defined. To better understand the molecular mechanisms underlying TCTP involved in cellular processes, we performed an affinity purification-based proteomic profiling to identify proteins interacting with TCTP in human cervical cancer HeLa cells. We found that a group of proteins involved in DNA repair are enriched in the potential TCTP interactome. Silencing TCTP by short hairpin RNA in breast carcinoma MCF-7 cells leads to the declined repair efficiency for DNA double-strand breaks on the GFP-Pem1 reporter gene by homologous recombination, the persistent activation and the prolonged retention of γH2AX and Rad51 foci following ionizing radiation. Reciprocal immunoprecipitations indicated that TCTP forms complexes with Rad51 in vivo, and the stability maintenance of Rad51 requires TCTP in MCF-7 cells under normal cell culture conditions. Moreover, inactivation of TCTP by sertraline treatment enhances UVC irradiation-induced apoptosis in MCF-7 cells, and causes sensitization to DNA-damaging drug etoposide and DNA repair inhibitor olaparib. Thus, we have identified an important role of TCTP in promoting DNA double-stand break repair via facilitating DNA homologous recombination processes and highlighted the great potential of TCTP as a drug target to enhance conventional chemotherapy for cancer patients with high levels of TCTP expression.
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Affiliation(s)
- Y Li
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - H Sun
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - C Zhang
- The 2nd Affiliated Hospital, Harbin Medical University, Harbin, China
| | - J Liu
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - H Zhang
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - F Fan
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - R A Everley
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - X Ning
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - Y Sun
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - J Hu
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - J Liu
- The 2nd Affiliated Hospital, Harbin Medical University, Harbin, China
| | - J Zhang
- The 2nd Affiliated Hospital, Harbin Medical University, Harbin, China
| | - W Ye
- The 2nd Affiliated Hospital, Harbin Medical University, Harbin, China
| | - X Qiu
- The 2nd Affiliated Hospital, Harbin Medical University, Harbin, China
| | - S Dai
- The Tumor Hospital, Harbin Medical University, Harbin, China
| | - B Liu
- The Tumor Hospital, Harbin Medical University, Harbin, China
| | - H Xu
- Department of Clinical Laboratory, The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - S Fu
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
| | - S P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - C Zhou
- The Laboratory of Medical Genetics, Harbin Medical University, Harbin, China
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Pinkaew D, Fujise K. Fortilin: A Potential Target for the Prevention and Treatment of Human Diseases. Adv Clin Chem 2017; 82:265-300. [PMID: 28939212 DOI: 10.1016/bs.acc.2017.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Fortilin is a highly conserved 172-amino-acid polypeptide found in the cytosol, nucleus, mitochondria, extracellular space, and circulating blood. It is a multifunctional protein that protects cells against apoptosis, promotes cell growth and cell cycle progression, binds calcium (Ca2+) and has antipathogen activities. Its role in the pathogenesis of human and animal diseases is also diverse. Fortilin facilitates the development of atherosclerosis, contributes to both systemic and pulmonary arterial hypertension, participates in the development of cancers, and worsens diabetic nephropathy. It is important for the adaptive expansion of pancreatic β-cells in response to obesity and increased insulin requirement, for the regeneration of liver after hepatectomy, and for protection of the liver against alcohol- and ER stress-induced injury. Fortilin is a viable surrogate marker for in vivo apoptosis, and it plays a key role in embryo and organ development in vertebrates. In fish and shrimp, fortilin participates in host defense against bacterial and viral pathogens. Further translational research could prove fortilin to be a viable molecular target for treatment of various human diseases including and not limited to atherosclerosis, hypertension, certain tumors, diabetes mellitus, diabetic nephropathy, hepatic injury, and aberrant immunity and host defense.
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Affiliation(s)
- Decha Pinkaew
- University of Texas Medical Branch at Galveston, Galveston, TX, United States
| | - Ken Fujise
- University of Texas Medical Branch at Galveston, Galveston, TX, United States; The Institute of Translational Sciences, University of Texas Medical Branch at Galveston, Galveston, TX, United States.
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Kumar R, Maurya R, Saran S. Identification of novel inhibitors of the translationally controlled tumor protein (TCTP): insights from molecular dynamics. MOLECULAR BIOSYSTEMS 2017; 13:510-524. [PMID: 28128835 DOI: 10.1039/c6mb00850j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The translationally controlled tumor protein (TCTP) is a highly conserved multifunctional protein, preferentially expressed in mitotically active tissues and is a potential biomarker and a therapeutic target for lung cancers. An understanding of the biology of this molecule and model systems for the screening of drugs is still awaited. In the absence of complete crystal structure, NMR structures as templates were used for homology modeling and MD optimization of both Dictyostelium discoideum and human TCTPs, which was followed by pocket-site prediction, ligand screening and docking. Rescoring of TCTP-ligand complexes was done using MD and MM-PBSA approaches. D. discoideum TCTP was expressed under a constitutive promoter and the endogenous RNA in multicellular structures formed was localized by in situ hybridization. Based on the interactions and binding energy scores, two novel compounds were identified as the best potential inhibitors that could be further used for the development of drug candidates. Inhibition of cell proliferation was observed in the strain overexpressing Dictyostelium TCTP and in situ hybridization results show them to be localized in the prestalk (dying cell population) cells. D. discoideum and human TCTPs share similar dynamic behaviors; overexpression of Dictyostelium TCTP inhibits cell proliferation. D. discoideum could be used as a model system for understanding the biology of this molecule and also for drug screening.
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Affiliation(s)
- Rakesh Kumar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Ranjana Maurya
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Shweta Saran
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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Function of translationally controlled tumor protein (TCTP) in Eudrilus eugeniae regeneration. PLoS One 2017; 12:e0175319. [PMID: 28403226 PMCID: PMC5389791 DOI: 10.1371/journal.pone.0175319] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 03/23/2017] [Indexed: 01/07/2023] Open
Abstract
TCTP (Translationally Controlled Tumour Protein) is a multifunctional protein that plays a role in the development, immune system, tumour reversion, and maintenance of stem cells. The mRNA of the Tpt1 gene is over-expressed during liver regeneration. But, the function of the protein in regeneration is not known. To study the role of the protein in regeneration, the earthworm Eudrilus eugeniae was chosen. First, the full length cDNA of the Tpt1 gene was sequenced. The size of the cDNA is 504 bp and the protein has 167 amino acids. The highest level of TCTP expression was documented in the worm after three days of regeneration. The protein was found to be expressed specifically in the epithelial layer of the skin. During regeneration, the protein expression was found to be the highest at the tip of blastema. The pharmacological suppression of TCTP using nutlin-3 and TCTP RNAi experiments resulted in the failure of the regeneration process. The suppression of TCTP caused the arrest of proliferation in posterior amputated worms. The severe cell death was documented in the amputated region of nutlin-3 injected worm. The silencing of TCTP has blocked the modification of clitellar segments. The experiments confirm that TCTP has major functions in the upstream signalling of cell proliferation in the early regeneration process in E. eugeniae.
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Clearing the outer mitochondrial membrane from harmful proteins via lipid droplets. Cell Death Discov 2017; 3:17016. [PMID: 28386457 PMCID: PMC5357670 DOI: 10.1038/cddiscovery.2017.16] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/27/2017] [Accepted: 02/10/2017] [Indexed: 01/25/2023] Open
Abstract
In recent years it turned out that there is not only extensive communication between the nucleus and mitochondria but also between mitochondria and lipid droplets (LDs) as well. We were able to demonstrate that a number of proteins shuttle between LDs and mitochondria and it depends on the metabolic state of the cell on which organelle these proteins are predominantly localized. Responsible for the localization of the particular proteins is a protein domain consisting of two α-helices, which we termed V-domain according to the predicted structure. So far we have detected this domain in the following proteins: mammalian BAX, BCL-XL, TCTP and yeast Mmi1p and Erg6p. According to our experiments there are two functions of this domain: (1) shuttling of proteins to mitochondria in times of stress and apoptosis; (2) clearing the outer mitochondrial membrane from pro- as well as anti-apoptotic proteins by moving them to LDs after the stress ceases. In this way the LDs are used by the cell to modulate stress response.
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Bommer UA, Vine KL, Puri P, Engel M, Belfiore L, Fildes K, Batterham M, Lochhead A, Aghmesheh M. Translationally controlled tumour protein TCTP is induced early in human colorectal tumours and contributes to the resistance of HCT116 colon cancer cells to 5-FU and oxaliplatin. Cell Commun Signal 2017; 15:9. [PMID: 28143584 PMCID: PMC5286767 DOI: 10.1186/s12964-017-0164-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 01/23/2017] [Indexed: 12/22/2022] Open
Abstract
Background Translationally controlled tumour protein TCTP is an anti-apoptotic protein frequently overexpressed in cancers, where high levels are often associated with poor patient outcome. TCTP may be involved in protecting cancer cells against the cytotoxic action of anti-cancer drugs. Here we study the early increase of TCTP levels in human colorectal cancer (CRC) and the regulation of TCTP expression in HCT116 colon cancer cells, in response to treatment with the anti-cancer drugs 5-FU and oxaliplatin. Methods Using immunohistochemistry, we assessed TCTP levels in surgical samples from adenomas and adenocarcinomas of the colon, compared to normal colon tissue. We also studied the regulation of TCTP in HCT116 colon cancer cells in response to 5-FU and oxaliplatin by western blotting. TCTP mRNA levels were assessed by RT-qPCR. We used mTOR kinase inhibitors to demonstrate mTOR-dependent translational regulation of TCTP under these conditions. Employing the Real-Time Cell Analysis (RTCA) System and the MTS assay, we investigated the effect of TCTP-knockdown on the sensitivity of HCT116 cells to the anti-cancer drugs 5-FU and oxaliplatin. Results 1. TCTP levels are significantly increased in colon adenomas and adenocarcinomas, compared to normal colon tissue. 2. TCTP protein levels are about 4-fold upregulated in HCT116 colon cancer cells, in response to 5-FU and oxaliplatin treatment, whereas TCTP mRNA levels are down regulated. 3. mTOR kinase inhibitors prevented the up-regulation of TCTP protein, indicating that TCTP is translationally regulated through the mTOR complex 1 signalling pathway under these conditions. 4. Using two cellular assay systems, we demonstrated that TCTP-knockdown sensitises HCT116 cells to the cytotoxicity caused by 5-FU and oxaliplatin. Conclusions Our results demonstrate that TCTP levels increase significantly in the early stages of CRC development. In colon cancer cells, expression of this protein is largely upregulated during treatment with the DNA-damaging anti-cancer drugs 5-FU and oxaliplatin, as part of the cellular stress response. TCTP may thus contribute to the development of anti-cancer drug resistance. These findings indicate that TCTP might be suitable as a biomarker and that combinatorial treatment using 5-FU/oxaliplatin, together with mTOR kinase inhibitors, could be a route to preventing the development of resistance to these drugs. Electronic supplementary material The online version of this article (doi:10.1186/s12964-017-0164-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ulrich-Axel Bommer
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia. .,Graduate School of Medicine, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.
| | - Kara L Vine
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,School of Biological Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, 2522, NSW, Australia
| | - Prianka Puri
- Graduate School of Medicine, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,Present address: Southeast Sydney Illawarra Area Health Services, Sydney, NSW, Australia
| | - Martin Engel
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,School of Biological Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, 2522, NSW, Australia
| | - Lisa Belfiore
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,School of Biological Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, 2522, NSW, Australia
| | - Karen Fildes
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,Graduate School of Medicine, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia
| | - Marijka Batterham
- School of Mathematics and Applied Statistics, Faculty of Engineering and Information Sciences University of Wollongong, Wollongong, 2522, NSW, Australia
| | - Alistair Lochhead
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,Southern IML Pathology Wollongong, 2500, Wollongong, NSW, Australia.,Present address: Syd-Path, St. Vincent's Hospital Darlinghurst, Sydney, 2010, NSW, Australia
| | - Morteza Aghmesheh
- Illawarra Health and Medical Research Institute (IHMRI), University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia.,Illawarra Cancer Care Centre, The Wollongong Hospital, Wollongong, 2500, NSW, Australia
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Bonhoure A, Vallentin A, Martin M, Senff-Ribeiro A, Amson R, Telerman A, Vidal M. Acetylation of translationally controlled tumor protein promotes its degradation through chaperone-mediated autophagy. Eur J Cell Biol 2017; 96:83-98. [PMID: 28110910 DOI: 10.1016/j.ejcb.2016.12.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 12/13/2016] [Accepted: 12/13/2016] [Indexed: 12/22/2022] Open
Abstract
Translationally controlled tumor protein (Tpt1/TCTP) is a multi-functional cytosolic protein whose cellular levels are finely tuned. TCTP regulates protein behavior by favoring stabilization of protein partners or on the contrary by promoting degradation of others. TCTP has been shown to be transcriptionally and translationally regulated, but much less is known about its degradation process. In this study, we present evidence that chaperone-mediated autophagy (CMA) contributes to TCTP regulation. CMA allows lysosomal degradation of specific cytosolic proteins on a molecule-by-molecule basis. It contributes to cellular homeostasis especially by acting as a quality control for cytosolic proteins in response to stress and as a way of regulating the level of specific proteins. Using a variety of approaches, we show that CMA degradation of TCTP is Hsc70 and LAMP-2A dependent. Our data indicate that (i) TCTP directly interacts with Hsc70; (ii) silencing LAMP-2A in MEFs using siRNA leads to inhibition of TCTP downregulation; (iii) TCTP is relocalized from a diffuse cytosolic pattern to a punctate lysosomal pattern when CMA is upregulated; (iv) TCTP is degraded in vitro by purified lysosomes. Importantly, using lysine-mutated forms of TCTP, we show that acetylation of Lysine 19 generates a KFERQ-like motif and promotes binding to Hsc70, lysosome targeting and TCTP degradation by CMA. Altogether these results indicate that TCTP is degraded by chaperone-mediated autophagy in an acetylation dependent manner.
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Affiliation(s)
- Anne Bonhoure
- UMR 5235, CNRS, Université Montpellier, 34095 Montpellier, France
| | - Alice Vallentin
- UMR 5235, CNRS, Université Montpellier, 34095 Montpellier, France
| | - Marianne Martin
- UMR 5235, CNRS, Université Montpellier, 34095 Montpellier, France
| | - Andrea Senff-Ribeiro
- UMR 8113, École Normale Supérieure, 94235 Cachan, France; UMR 981, Institut Gustave Roussy, 94800 Villejuif, France
| | - Robert Amson
- UMR 8113, École Normale Supérieure, 94235 Cachan, France; UMR 981, Institut Gustave Roussy, 94800 Villejuif, France
| | - Adam Telerman
- UMR 8113, École Normale Supérieure, 94235 Cachan, France; UMR 981, Institut Gustave Roussy, 94800 Villejuif, France
| | - Michel Vidal
- UMR 5235, CNRS, Université Montpellier, 34095 Montpellier, France.
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Zhang J, Shim G, de Toledo SM, Azzam EI. The Translationally Controlled Tumor Protein and the Cellular Response to Ionizing Radiation-Induced DNA Damage. Results Probl Cell Differ 2017; 64:227-253. [DOI: 10.1007/978-3-319-67591-6_12] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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40
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Betsch L, Savarin J, Bendahmane M, Szecsi J. Roles of the Translationally Controlled Tumor Protein (TCTP) in Plant Development. Results Probl Cell Differ 2017; 64:149-172. [PMID: 29149407 DOI: 10.1007/978-3-319-67591-6_7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The Translationally Controlled Tumor Protein (TCTP) is a conserved protein which expression was associated with several biochemical and cellular functions. Loss-of-function mutants are lethal both in animals and in plants, making the identification of its exact role difficult. Recent data using the model plant Arabidopsis thaliana provided the first viable adult knockout for TCTP and helped addressing the biological role of TCTP during organ development and the functional conservation between plants and animals. This chapter summarizes our up to date knowledge about the role of TCTP in plants and discuss about conserved functions and mechanisms between plants and animals.
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Affiliation(s)
- Léo Betsch
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, 69342, Lyon, France
| | - Julie Savarin
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, 69342, Lyon, France
| | - Mohammed Bendahmane
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, 69342, Lyon, France.
| | - Judit Szecsi
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, 69342, Lyon, France.
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Function of Translationally Controlled Tumor Protein in Organ Growth: Lessons from Drosophila Studies. Results Probl Cell Differ 2017; 64:173-191. [PMID: 29149408 DOI: 10.1007/978-3-319-67591-6_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Regulation of cell growth and proliferation is crucial for development and function of organs in all animals. Genetic defects in growth control can lead to developmental disorders and cancers. Translationally controlled tumor protein (TCTP) is a family of evolutionarily conserved proteins implicated in cancer. Recent studies have revealed multiple roles of TCTP in diverse cellular events, but TCTP functions in vivo are poorly understood in vertebrate systems. We have used Drosophila melanogaster, the fruit fly, as a model organism for genetic dissection of Tctp function. Our studies have shown that Tctp is essential for organ development by regulating growth signaling. Furthermore, it is required for genome stability by promoting DNA repair and chromatin remodeling in the nucleus. Thus, Tctp acts as a multifaceted cytosolic and nuclear factor for regulating organ growth and genome stability. In this chapter, we describe an overview of our findings on Tctp functions in Drosophila and discuss their implications in cancer.
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Zhuo K, Chen J, Lin B, Wang J, Sun F, Hu L, Liao J. A novel Meloidogyne enterolobii effector MeTCTP promotes parasitism by suppressing programmed cell death in host plants. MOLECULAR PLANT PATHOLOGY 2017; 18:45-54. [PMID: 26808010 PMCID: PMC6638250 DOI: 10.1111/mpp.12374] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 05/20/2023]
Abstract
Meloidogyne enterolobii is one of the most important plant-parasitic nematodes that can overcome the Mi-1 resistance gene and damage many economically important crops. Translationally controlled tumour protein (TCTP) is a multifunctional protein that exists in various eukaryotes and plays an important role in parasitism. In this study, a novel M. enterolobii TCTP effector, named MeTCTP, was identified and functionally characterized. MeTCTP was specifically expressed within the dorsal gland and was up-regulated during M. enterolobii parasitism. Transient expression of MeTCTP in protoplasts from tomato roots showed that MeTCTP was localized in the cytoplasm of the host cells. Transgenic Arabidopsis thaliana plants overexpressing MeTCTP were more susceptible to M. enterolobii infection than wild-type plants in a dose-dependent manner. By contrast, in planta RNA interference (RNAi) targeting MeTCTP suppressed the expression of MeTCTP in infecting nematodes and attenuated their parasitism. Furthermore, MeTCTP could suppress programmed cell death triggered by the pro-apoptotic protein BAX. These results demonstrate that MeTCTP is a novel plant-parasitic nematode effector that promotes parasitism, probably by suppressing programmed cell death in host plants.
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Affiliation(s)
- Kan Zhuo
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
| | - Jiansong Chen
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
| | - Borong Lin
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
| | - Jing Wang
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
| | - Fengxia Sun
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
| | - Lili Hu
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
| | - Jinling Liao
- Laboratory of Plant NematologySouth China Agricultural UniversityGuangzhou510642China
- Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhou510642China
- Guangdong Vocational College of Ecological EngineeringGuangzhou510520China
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Assrir N, Malard F, Lescop E. Structural Insights into TCTP and Its Interactions with Ligands and Proteins. Results Probl Cell Differ 2017; 64:9-46. [PMID: 29149402 DOI: 10.1007/978-3-319-67591-6_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The 19-24 kDa Translationally Controlled Tumor Protein (TCTP) is involved in a wide range of molecular interactions with biological and nonbiological partners of various chemical compositions such as proteins, peptides, nucleic acids, carbohydrates, or small molecules. TCTP is therefore an important and versatile binding platform. Many of these protein-protein interactions have been validated, albeit only few received an in-depth structural characterization. In this chapter, we will focus on the structural analysis of TCTP and we will review the available literature regarding its interaction network from a structural perspective.
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Affiliation(s)
- Nadine Assrir
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, 91190, Gif-sur-Yvette, France
| | - Florian Malard
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, 91190, Gif-sur-Yvette, France
| | - Ewen Lescop
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, 91190, Gif-sur-Yvette, France.
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Bommer UA. The Translational Controlled Tumour Protein TCTP: Biological Functions and Regulation. Results Probl Cell Differ 2017; 64:69-126. [PMID: 29149404 DOI: 10.1007/978-3-319-67591-6_4] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The Translational Controlled Tumour Protein TCTP (gene symbol TPT1, also called P21, P23, Q23, fortilin or histamine-releasing factor, HRF) is a highly conserved protein present in essentially all eukaryotic organisms and involved in many fundamental cell biological and disease processes. It was first discovered about 35 years ago, and it took an extended period of time for its multiple functions to be revealed, and even today we do not yet fully understand all the details. Having witnessed most of this history, in this chapter, I give a brief overview and review the current knowledge on the structure, biological functions, disease involvements and cellular regulation of this protein.TCTP is able to interact with a large number of other proteins and is therefore involved in many core cell biological processes, predominantly in the response to cellular stresses, such as oxidative stress, heat shock, genotoxic stress, imbalance of ion metabolism as well as other conditions. Mechanistically, TCTP acts as an anti-apoptotic protein, and it is involved in DNA-damage repair and in cellular autophagy. Thus, broadly speaking, TCTP can be considered a cytoprotective protein. In addition, TCTP facilitates cell division through stabilising the mitotic spindle and cell growth through modulating growth signalling pathways and through its interaction with the proteosynthetic machinery of the cell. Due to its activities, both as an anti-apoptotic protein and in promoting cell growth and division, TCTP is also essential in the early development of both animals and plants.Apart from its involvement in various biological processes at the cellular level, TCTP can also act as an extracellular protein and as such has been involved in modulating whole-body defence processes, namely in the mammalian immune system. Extracellular TCTP, typically in its dimerised form, is able to induce the release of cytokines and other signalling molecules from various types of immune cells. There are also several examples, where TCTP was shown to be involved in antiviral/antibacterial defence in lower animals. In plants, the protein appears to have a protective effect against phytotoxic stresses, such as flooding, draught, too high or low temperature, salt stress or exposure to heavy metals. The finding for the latter stress condition is corroborated by earlier reports that TCTP levels are considerably up-regulated upon exposure of earthworms to high levels of heavy metals.Given the involvement of TCTP in many biological processes aimed at maintaining cellular or whole-body homeostasis, it is not surprising that dysregulation of TCTP levels may promote a range of disease processes, foremost cancer. Indeed a large body of evidence now supports a role of TCTP in at least the most predominant types of human cancers. Typically, this can be ascribed to both the anti-apoptotic activity of the protein and to its function in promoting cell growth and division. However, TCTP also appears to be involved in the later stages of cancer progression, such as invasion and metastasis. Hence, high TCTP levels in tumour tissues are often associated with a poor patient outcome. Due to its multiple roles in cancer progression, TCTP has been proposed as a potential target for the development of new anti-cancer strategies in recent pilot studies. Apart from its role in cancer, TCTP dysregulation has been reported to contribute to certain processes in the development of diabetes, as well as in diseases associated with the cardiovascular system.Since cellular TCTP levels are highly regulated, e.g. in response to cell stress or to growth signalling, and because deregulation of this protein contributes to many disease processes, a detailed understanding of regulatory processes that impinge on TCTP levels is required. The last section of this chapter summarises our current knowledge on the mechanisms that may be involved in the regulation of TCTP levels. Essentially, expression of the TPT1 gene is regulated at both the transcriptional and the translational level, the latter being particularly advantageous when a rapid adjustment of cellular TCTP levels is required, for example in cell stress responses. Other regulatory mechanisms, such as protein stability regulation, may also contribute to the regulation of overall TCTP levels.
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Affiliation(s)
- Ulrich-Axel Bommer
- School of Medicine, Graduate Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia.
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Kubiak JZ, Kloc M. Elusive Role of TCTP Protein and mRNA in Cell Cycle and Cytoskeleton Regulation. Results Probl Cell Differ 2017; 64:217-225. [PMID: 29149411 DOI: 10.1007/978-3-319-67591-6_11] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Translationally Controlled Tumor-associated Protein (TCTP) is a small, 23 kDa multifunctional and ubiquitous protein localized both in the cytoplasm and in the nucleus of eukaryotic cells. It is evolutionarily highly conserved. Certain aspects of its structure show remarkable similarities to guanine nucleotide-free chaperons Mss4 and Dss4 suggesting that at least some functions of TCTP may depend on its chaperon-like action on other proteins. Besides other functions, TCTP is clearly involved in cell cycle regulation. It is also regulated in a cell-cycle-dependent manner suggesting a reciprocal interaction between this protein and the cell cycle-regulating machinery. TCTP also interacts with the cytoskeleton, mostly with actin microfilaments (MFs) and microtubules (MTs). It regulates the cytoskeleton organization and through this action it also influences cell shape and motility. The exact role of TCTP in cell cycle and cytoskeleton regulation is certainly not fully understood. In this chapter, we summarize recent data on cell cycle and cytoskeletal aspects of TCTP regulatory role.
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Affiliation(s)
- Jacek Z Kubiak
- Institute of Genetics and Development of Rennes (IGDR), Cell Cycle Group, CNRS, UMR 6290, 35043, Rennes, France.
- Faculty of Medicine, University Rennes 1, UEB, IFR 140, 35043, Rennes, France.
- Laboratory of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology (WIHE), Warsaw, Poland.
| | - Malgorzata Kloc
- The Houston Methodist Research Institute, Houston, TX, USA
- Department of Surgery, The Houston Methodist Hospital, Houston, TX, USA
- University of Texas, MD Anderson Cancer Center, Houston, TX, USA
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Abstract
Evolutionarily conserved and pleiotropic, the translationally controlled tumor protein (TCTP) is a housekeeping protein present in eukaryotic organisms. It plays an important role in regulating many fundamental processes, such as cell proliferation, cell death, immune responses, and apoptosis. As a result of the pioneer work by Adam Telerman and Robert Amson, the critical role of TCTP in tumor reversion was revealed. Moreover, TCTP has emerged as a regulator of cell fate determination and a promising therapeutic target for cancers. The multifaceted action of TCTP depends on its ability to interact with different proteins. Through this interaction network, TCTP regulates diverse physiological and pathological processes in a context-dependent manner. Complete mapping of the entire sets of TCTP protein interactions (interactome) is essential to understand its various cellular functions and to lay the foundation for the rational design of TCTP-based therapeutic approaches. So far, the global profiling of the interacting partners of TCTP has rarely been performed, but many interactions have been identified in small-scale studies in a specific biological system. This chapter, based on information from protein interaction databases and the literature, illustrates current knowledge of the TCTP interactome.
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Affiliation(s)
- Siting Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Feng Ge
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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Abstract
The translationally controlled tumor protein (TCTP) is a highly conserved protein that is regulated due to a high number of extracellular stimuli. TCTP has an important role for cell cycle and normal development. On the other side, tumor reversion and malignant transformation have been associated with TCTP. TCTP has been found among the 12 genes that are differentially expressed during mouse oocyte maturation, and an overexpression of this gene was reported in a wide variety of different cancer types. Its antiapoptotic effect is indicated by the interaction with several proapoptotic proteins of the Bcl-2 family and the p53 tumor suppressor protein. In this article, we draw attention to the role of TCTP in cancer, especially, focusing on cell differentiation and tumor reversion, a biological process by which highly tumorigenic cells lose their malignant phenotype. This protein has been shown to be the most strongly downregulated protein in revertant cells compared to the parental cancer cells. Decreased expression of TCTP results either in the reprogramming of cancer cells into reversion or apoptosis. As conventional chemotherapy is frequently associated with the development of drug resistance and high toxicity, the urge for the development of new or additional scientific approaches falls into place. Differentiation therapy aims at reinducing differentiation backward to the nonmalignant cellular state. Here, different approaches have been reported such as the induction of retinoid pathways and the use of histone deacetylase inhibitors. Also, PPARγ agonists and the activation of the vitamin D receptor have been reported as potential targets in differentiation therapy. As TCTP is known as the histamine-releasing factor, antihistaminic drugs have been shown to target this protein. Antihistaminic compounds, hydroxyzine and promethazine, inhibited cell growth of cancer cells and decreased TCTP expression of breast cancer and leukemia cells. Recently, we found that two antihistaminics, levomepromazine and buclizine, inhibited cancer cell growth by direct binding to TCTP and induction of cell differentiation. These data confirmed that TCTP is an exquisite target for anticancer differentiation therapy and antihistaminics have potential to be lead compounds for the direct interaction with TCTP as new inhibitors of human TCTP and tumor growth.
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Affiliation(s)
- Ean-Jeong Seo
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Nicolas Fischer
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany.
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Jing Y, He LL, Mei CL. Translationally-controlled tumor protein activates the transcription of Oct-4 in kidney-derived stem cells. Exp Ther Med 2016; 13:280-284. [PMID: 28123502 DOI: 10.3892/etm.2016.3955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 06/14/2016] [Indexed: 12/16/2022] Open
Abstract
The molecular mechanisms underlying translationally-controlled tumor protein (TCTP) in the activation of octamer-binding transcription factor 4 (Oct-4) in kidney-derived stem cells have not been characterized. The aim of the present study was to identify the transcriptional activation of Oct-4 by TCTP in kidney-derived stem cells. Homology-directed repair cDNA inserted into Fisher 344 transgenic (Tg) rats and the mouse strain 129/Svj were used for the experiments. Diphtheria toxin (DT; 10 ng/kg) injected into the Tg rats created the kidney injury, which was rapidly restored by the activation of kidney-derived stem cells. Kidney-derived stem cells were isolated from the DT-injured Tg rats using cell culture techniques. The co-expression of Oct-4 and TCTP were observed in the isolated kidney-derived stem cells. Immunoblotting and reverse transcription-polymerase chain reaction analysis of TCTP null mutant (TCTP-/-) embryos at day 9.5 (E9.5) demonstrated the absence of co-expression of Oct-4 and TCTP, but expression of paired box-2 was detected. This was in contrast with the E9.5 control embryos, which expressed all three proteins. In conclusion, the results of the present study demonstrated that TCTP activates the transcription of Oct-4 in kidney-derived stem cells, as TCTP-/- embryos exhibited knock down of TCTP and Oct-4 without disturbing the expression of Pax-2 The characteristics and functional nature of TCTP in association with Oct-4 in kidney-derived stem cells was identified.
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Affiliation(s)
- Ying Jing
- Kidney Institute of CPLA, Division of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Liang-Liang He
- Kidney Institute of CPLA, Division of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Chang-Lin Mei
- Kidney Institute of CPLA, Division of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
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Hao S, Qin Y, Yin S, He J, He D, Wang C. Serum translationally controlled tumor protein is involved in rat liver regeneration after hepatectomy. Hepatol Res 2016; 46:1392-1401. [PMID: 26969900 DOI: 10.1111/hepr.12695] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 03/04/2016] [Accepted: 03/07/2016] [Indexed: 12/12/2022]
Abstract
AIM The translationally controlled tumor protein (TCTP) has been reported to promote progression of many physiological processes. However, whether TCTP is involved in liver regeneration has been rarely studied. This study aimed to investigate the potential role of serum TCTP in liver regeneration after two-thirds partial hepatectomy. METHODS The synthesis rate and accumulated expression of TCTP was assessed by phosphor imaging and Western blot analysis, respectively. The mRNA expression of tctp was analyzed by quantitative real-time PCR. The effect of serum TCTP on hepatocyte proliferation was investigated by bromodeoxyuridine incorporation, liver/body weight ratio, albumin concentration, and histological examination of liver following treatment of rat with anti-TCTP antibody or prokaryotic TCTP protein before hepatectomy. The MTT assay was used to examine effect of TCTP on hepatocyte proliferation in vitro. RESULTS The results showed that the expression of intracellular and serum TCTP protein was significantly increased in rats after two-thirds partial hepatectomy. In vivo bromodeoxyuridine labeling assay suggested that treatment with anti-TCTP antibody before hepatectomy significantly decreased hepatocyte proliferation and liver/body weight ratio. The prokaryotic TCTP had a potential promoting effect on hepatocyte proliferation both in vivo and in vitro, although prokaryotic TCTP given to rats prior to hepatectomy did not increase the proliferation ratio or liver/body weight ratio. Furthermore, anti-TCTP antibody pretreatment decreased the expression of cyclin E, cdk2, and interleukin-6 in rat liver. CONCLUSION These findings suggest serum TCTP is involved in rat liver regeneration through promoting hepatocyte proliferation.
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Affiliation(s)
- Shuai Hao
- School of Food and Chemical Engineering, Beijing Technology and Business University, Beijing, China.,Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.,Key Laboratory for Cell Proliferation and Regulation Biology, Ministry of Education, Beijing Normal University, Beijing, China
| | - Yu Qin
- School of Food and Chemical Engineering, Beijing Technology and Business University, Beijing, China.,Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Sheng Yin
- School of Food and Chemical Engineering, Beijing Technology and Business University, Beijing, China.,Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Jinjun He
- Key Laboratory for Cell Proliferation and Regulation Biology, Ministry of Education, Beijing Normal University, Beijing, China
| | - Dacheng He
- Key Laboratory for Cell Proliferation and Regulation Biology, Ministry of Education, Beijing Normal University, Beijing, China
| | - Chengtao Wang
- School of Food and Chemical Engineering, Beijing Technology and Business University, Beijing, China.,Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China.,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
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Wu H, Xu L, Ji C, Yu D. Proteomic and metabolomic responses in D-shape larval mussels Mytilus galloprovincialis exposed to cadmium and arsenic. FISH & SHELLFISH IMMUNOLOGY 2016; 58:514-520. [PMID: 27702675 DOI: 10.1016/j.fsi.2016.09.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 09/28/2016] [Accepted: 09/30/2016] [Indexed: 06/06/2023]
Abstract
Cadmium (Cd) and arsenic (As) are the main metal/metalloid contaminants in the coastal environments of the Bohai Sea, China. In this work, a combined proteomic and metabolomic approach was applied to investigate the biological effects of Cd and As (V) in the early life stage (D-shape larvae) of mussel Mytilus galloprovincialis. Results indicated that Cd was a potential immune toxicant to D-shape larval mussel because of the numerous proteomic responses related to immune system. Additionally, Cd induced oxidative stress, cellular injury and disturbance in nucleic acid metabolism in D-shape larval mussels. However, only two identified proteins were significantly altered in As (V)-treated group, suggesting that D-shape larval mussel was less sensitive to As (V) than to Cd at protein level. These two proteins in response to As (V) suggested that As (V) influenced anti-oxidative system and cell proliferation in D-shape larval mussels. Metabolic responses indicated that Cd and As (V) induced disturbances in osmotic regulation and energy metabolism in D-shape larval mussels via different metabolic pathways. In addition, Cd reduced lipid metabolism as well. This work demonstrated that a combination of proteomics and metabolomics could provide an insightful view in the biological effects of pollutants in mussel M. galloprovincialis at an early life stage.
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Affiliation(s)
- Huifeng Wu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai 264003, PR China.
| | - Lanlan Xu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chenglong Ji
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Deliang Yu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
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