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Son SH, Lee J, Cho SN, Choi JA, Kim J, Nguyen TD, Lee SA, Son D, Song CH. Herp regulates intracellular survival of Mycobacterium tuberculosis H37Ra in macrophages by regulating reactive oxygen species-mediated autophagy. mBio 2023; 14:e0153523. [PMID: 37800958 PMCID: PMC10653826 DOI: 10.1128/mbio.01535-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/21/2023] [Indexed: 10/07/2023] Open
Abstract
IMPORTANCE Several studies have suggested that endoplasmic reticulum (ER) stress is important in the pathogenesis of infectious diseases; however, the precise function of ER stress regulation and the role of Herp as a regulator in Mtb H37Ra-induced ER stress remain elusive. Therefore, our study investigated ER stress and autophagy associated with Herp expression in Mycobacterium tuberculosis-infected macrophages to determine the role of Herp in the pathogenesis of tuberculosis.
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Affiliation(s)
- Sang-Hun Son
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Junghwan Lee
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
- Translational Immunology Institute, Chungnam National University, Daejeon, South Korea
| | - Soo-Na Cho
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Ji-Ae Choi
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
- Translational Immunology Institute, Chungnam National University, Daejeon, South Korea
| | - Jaewhan Kim
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Tam Doan Nguyen
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Seong-Ahn Lee
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Doyi Son
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Chang-Hwa Song
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
- Translational Immunology Institute, Chungnam National University, Daejeon, South Korea
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2
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Pritchett EM, Van Goor A, Schneider BK, Young M, Lamont SJ, Schmidt CJ. Chicken pituitary transcriptomic responses to acute heat stress. Mol Biol Rep 2023; 50:5233-5246. [PMID: 37127810 DOI: 10.1007/s11033-023-08464-8] [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: 02/13/2023] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Poultry production is vulnerable to increasing temperatures in terms of animal welfare and in economic losses. With the predicted increase in global temperature and the number and severity of heat waves, it is important to understand how chickens raised for food respond to heat stress. This knowledge can be used to determine how to select chickens that are adapted to thermal challenge. As neuroendocrine organs, the hypothalamus and pituitary provide systemic regulation of the heat stress response. METHODS AND RESULTS Here we report a transcriptome analysis of the pituitary response to acute heat stress. Chickens were stressed for 2 h at 35 °C (HS) and transcriptomes compared with birds maintained in thermoneutral temperatures (25 °C). CONCLUSIONS The observations were evaluated in the context of ontology terms and pathways to describe the pituitary response to heat stress. The pituitaries of heat stressed birds exhibited responses to hyperthermia through altered expression of genes coding for chaperones, cell cycle regulators, cholesterol synthesis, transcription factors, along with the secreted peptide hormones, prolactin, and proopiomelanocortin.
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Affiliation(s)
| | - Angelica Van Goor
- Animal Science, Iowa State University, Ames, IA, USA
- Food Science and Human Nutrition, Iowa State University, Ames, IA, USA
| | | | - Meaghan Young
- Animal and Food Science, University of Delaware, Newark, DE, USA
| | | | - Carl J Schmidt
- Animal and Food Science, University of Delaware, Newark, DE, USA.
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3
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Pellegrini F, Padovano V, Biscarini S, Santini T, Setti A, Galfrè SG, Silenzi V, Vitiello E, Mariani D, Nicoletti C, Torromino G, De Leonibus E, Martone J, Bozzoni I. A KO mouse model for the lncRNA Lhx1os produces motor neuron alterations and locomotor impairment. iScience 2022; 26:105891. [PMID: 36647387 PMCID: PMC9840152 DOI: 10.1016/j.isci.2022.105891] [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: 08/31/2022] [Revised: 11/22/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
Here, we describe a conserved motor neuron-specific long non-coding RNA, Lhx1os, whose knockout in mice produces motor impairment and postnatal reduction of mature motor neurons (MNs). The ER stress-response pathway result specifically altered with the downregulation of factors involved in the unfolded protein response (UPR). Lhx1os was found to bind the ER-associated PDIA3 disulfide isomerase and to affect the expression of the same set of genes controlled by this protein, indicating that the two factors act in conjunction to modulate the UPR. Altogether, the observed phenotype and function of Lhx1os indicate its important role in the control of MN homeostasis and function.
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Affiliation(s)
- Flaminia Pellegrini
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy,Center for Life Nano- & Neuro-Science@Sapienza of Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Vittorio Padovano
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy,Center for Life Nano- & Neuro-Science@Sapienza of Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Silvia Biscarini
- Center for Life Nano- & Neuro-Science@Sapienza of Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Tiziana Santini
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy,Center for Life Nano- & Neuro-Science@Sapienza of Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Adriano Setti
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy
| | - Silvia Giulia Galfrè
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy
| | - Valentina Silenzi
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy,Center for Life Nano- & Neuro-Science@Sapienza of Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Erika Vitiello
- Center for Human Technologies (CHT) Istituto Italiano di Tecnologia (IIT), 16152 Genova, Italy
| | - Davide Mariani
- Center for Human Technologies (CHT) Istituto Italiano di Tecnologia (IIT), 16152 Genova, Italy
| | - Carmine Nicoletti
- DAHFMO - Section of Histology and Medical Embryology, Sapienza University of Rome, 00185 Rome, Italy
| | - Giulia Torromino
- Institute of Cellular Biology and Neurobiology "ABT", CNR, Monterotondo, 00015 Rome, Italy
| | - Elvira De Leonibus
- Institute of Cellular Biology and Neurobiology "ABT", CNR, Monterotondo, 00015 Rome, Italy,Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, 80078 Naples, Italy
| | - Julie Martone
- Institute of Molecular Biology and Pathology, CNR, 00185 Rome, Italy,Corresponding author
| | - Irene Bozzoni
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, 00185 Rome, Italy,Center for Life Nano- & Neuro-Science@Sapienza of Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy,Center for Human Technologies (CHT) Istituto Italiano di Tecnologia (IIT), 16152 Genova, Italy,Corresponding author
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4
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Nie X, Liu D, Zheng M, Li X, Liu O, Guo Q, Zhu L, Lin B. HERPUD1 promotes ovarian cancer cell survival by sustaining autophagy and inhibit apoptosis via PI3K/AKT/mTOR and p38 MAPK signaling pathways. BMC Cancer 2022; 22:1338. [PMID: 36544104 PMCID: PMC9769045 DOI: 10.1186/s12885-022-10248-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 10/29/2022] [Indexed: 12/24/2022] Open
Abstract
HERPUD1 is an important early marker of endoplasmic reticulum stress (ERS) and is involved in the ubiquitination and degradation of several unfolded proteins. However, its role in tumorigenesis is seldom studied, and its role in ovarian cancer is unclear. Lewis y antigen is a tumor-associated sugar antigen that acts as an 'antenna' on the cell surface to receive signals from both inside and outside the cell. We previously reported that Lewis y can promote ovarian cancer by promoting autophagy and inhibiting apoptosis. In this study, we detect the expression of HERPUD1 and Lewis y antigens in 119 different ovarian cancer tissues, determine their relationship with clinicopathological parameters, analyze the correlation between these two proteins, and explore the related cancer-promoting mechanisms through MTT, flow cytometry, western blotting, and bioinformatics. HERPUD1 is highly expressed in ovarian cancer, especially in the early stage, and the expression of HERPUD1 and Lewis y antigen was positively correlated. After overexpression of Lewis y antigen, the expression level of HERPUD1 increased. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes pathways (KEGG) analysis showed that HERPUD1 and its related genes are enriched in regulating immunity, endoplasmic reticulum stress, ubiquitin-dependent degradation, ERS-induced apoptosis, and other key signaling pathways. We also clarified the HERPUD1 network of kinases, microRNA and transcription factor targets, and the impact of HERPUD1 mutations on prognosis. In addition, HERPUD1 promotes the proliferation of ovarian cancer cells, inhibits apoptosis, affects the cell cycle, promotes the occurrence of autophagy, and inhibits EMT and PI3K/AKT/mTOR and p38MAPK pathways. Overall, HERPUD1, regulated by the expression of tumor-associated protein Lewis y, promotes cell survival in the early stages of tumors, suggesting that HERPUD1 may play an important role in the development of ovarian cancer.
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Affiliation(s)
- Xin Nie
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
| | - Dawo Liu
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
| | - Mingjun Zheng
- grid.411095.80000 0004 0477 2585Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Munich, Germany
| | - Xiao Li
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
| | - Ouxuan Liu
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
| | - Qian Guo
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
| | - Liancheng Zhu
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
| | - Bei Lin
- grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, 36 Sanhao Road, Heping District, Shenyang, 110004 China ,Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China
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5
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Chen J, Meng J, Liu Y, Bian Z, Niu Q, Chen J, Zhou J, Zhang L, Zhang M, Liang C. Establishment of a five-enzalutamide-resistance-related-gene-based classifier for recurrence-free survival predicting of prostate cancer. J Cell Mol Med 2022; 26:5379-5390. [PMID: 36168930 PMCID: PMC9639034 DOI: 10.1111/jcmm.17554] [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: 11/17/2021] [Revised: 07/15/2022] [Accepted: 08/30/2022] [Indexed: 11/30/2022] Open
Abstract
To identify prostate cancer (PCa) patients with a high risk of recurrence is critical before delivering adjuvant treatment. We developed a classifier based on the Enzalutamide treatment resistance‐related genes to assist the currently available staging system in predicting the recurrence‐free survival (RFS) prognosis of PCa patients. We overlapped the DEGs from two datasets to obtain a more convincing Enzalutamide‐resistance‐related‐gene (ERRG) cluster. The five‐ERRG‐based classifier obtained good predictive values in both the training and validation cohorts. The classifier precisely predicted RFS of patients in four cohorts, independent of patient age, pathological tumour stage, Gleason score and PSA levels. The classifier and the clinicopathological factors were combined to construct a nomogram, which had an increased predictive accuracy than that of each variable alone. Besides, we also compared the differences between high‐ and low‐risk subgroups and found their differences were enriched in cancer progression‐related pathways. The five‐ERRG‐based classifier is a practical and reliable predictor, which adds value to the existing staging system for predicting the RFS prognosis of PCa after radical prostatectomy, enabling physicians to make more informed treatment decisions concerning adjuvant therapy.
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Affiliation(s)
- Jing Chen
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Jialin Meng
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Yi Liu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Zichen Bian
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Qingsong Niu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Junyi Chen
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Jun Zhou
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Meng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China.,Urology Institute of Shenzhen University, The Third Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, China
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
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6
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Kwon K, Cho H, Lee S, Cho EJ, Yu W, Kok CYL, Je HS, Kim J, Cho HJ, Kwon T. Adaptive cellular response of the substantia nigra dopaminergic neurons upon age-dependent iron accumulation. Aging Cell 2022; 21:e13694. [PMID: 35984750 PMCID: PMC9470899 DOI: 10.1111/acel.13694] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 06/20/2022] [Accepted: 07/28/2022] [Indexed: 01/25/2023] Open
Abstract
Progressive iron accumulation in the substantia nigra in the aged human brain is a major risk factor for Parkinson's disease and other neurodegenerative diseases. Heavy metals, such as iron, produce reactive oxygen species and consequently oxidative stress in cells. It is unclear, however, how neurons in the substantia nigra are protected against the age-related, excessive accumulation of iron. In this study, we examined the cellular response of the substantia nigra against age-related iron accumulation in rats of different ages. Magnetic resonance imaging confirmed the presence of iron in 6-month-old rats; in 15-month-old rats, iron accumulation significantly increased, particularly in the midbrain. Transcriptome analysis of the region, in which iron deposition was observed, revealed an increase in stress response genes in older animals. To identify the genes related to the cellular response to iron, independent of neurodevelopment, we exposed the neuroblastoma cell line SH-SY5Y to a similar quantity of iron and then analyzed their transcriptomic responses. Among various stress response pathways altered by iron overloading in the rat brain and SH-SY5Y cells, the genes associated with topologically incorrect protein responses were significantly upregulated. Knockdown of HERPUD1 and CLU in this pathway increased susceptibility to iron-induced cellular stress, thus demonstrating their roles in preventing iron overload-induced toxicity. The current study details the neuronal response to excessive iron accumulation, which is associated with age-related neurodegenerative diseases.
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Affiliation(s)
- Kujin Kwon
- Department of Biomedical Engineering, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea
| | - Hwapyeong Cho
- Department of Biomedical Engineering, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea
| | - Soyeon Lee
- Department of Biological Sciences, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea
| | - Eun Jeong Cho
- Department of Biological Sciences, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea
| | - Weonjin Yu
- Neuroscience and Behavioral Disorders ProgramDuke‐National University of Singapore (NUS) Medical SchoolSingapore CitySingapore
| | - Catherine Yen Li Kok
- Neuroscience and Behavioral Disorders ProgramDuke‐National University of Singapore (NUS) Medical SchoolSingapore CitySingapore
| | - Hyunsoo Shawn Je
- Neuroscience and Behavioral Disorders ProgramDuke‐National University of Singapore (NUS) Medical SchoolSingapore CitySingapore,Advanced Bioimaging Center, AcademiaSingapore CitySingapore
| | - Jae‐Ick Kim
- Department of Biological Sciences, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea
| | - Hyung Joon Cho
- Department of Biomedical Engineering, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea
| | - Taejoon Kwon
- Department of Biomedical Engineering, College of Information and BiotechnologyUlsan National Institute of Science and Technology (UNIST)UlsanKorea,Center for Genome IntegrityInstitute for Basic Science (IBS)UlsanKorea
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7
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Mikawa M, Sakai C, Yamamoto T, Nakamura Y, Tanaka S, Tominaga N, Inamitsu M, Oda T, Kobayashi S, Yano M. Herpud1 suppress angiotensin II induced hypertrophy in cardiomyocytes. Biochem Biophys Rep 2022; 30:101248. [PMID: 35313646 PMCID: PMC8933685 DOI: 10.1016/j.bbrep.2022.101248] [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: 01/17/2022] [Revised: 02/26/2022] [Accepted: 03/07/2022] [Indexed: 11/05/2022] Open
Abstract
Purpose The purpose of this study was to analyze the role of homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 (Herpud1) gene in the development of cardiomyocyte hypertrophy. Method In order to examine the effect of suppressing Herpud1 expression, Herpud1 small interfering RNA (siRNA) was introduced into H9C2 cells, which are cell lines derived from rat myocardium, and the degree of Herpud1 protein expression and cell hypertrophy in the Herpud1 siRNA-transfected group and the control group was compared by immunostaining 48 h after Herrpud1 siRNA introduction. To examine whether hypertrophy induced by angiotensin II (Ang II) can be suppressed by the overexpression of Herpud1, the green fluorescent protein (GFP)-Herpud1 plasmid was introduced into H9C2 cells, and the degree of cell hypertrophy was examined in the GFP-Herpud1-and control groups for 48 h. Nuclear translocation of nuclear factor of activated T-cells, cytoplasmic 4 (NFATc4), a transcription factor for hypertrophic genes, was also examined. Results [1] Herpud1 siRNA-transfected cells showed decreased Herpud1 protein expression and hypertrophy formation compared to control cells [2]; Overexpression of Herpud1 suppresses Ang II-induced cell hypertrophy; and [3] Overexpression of Herpud1 inhibits nuclear translocation of NFATc4. Discussion It was suggested that Herpud1 might be an anti-hypertrophic gene in Ang II induced cardiomyocytes hypertrophy. Silencing Herpud1 resulting hypertrophy of cardiomyocyte. Transient overexpression of Herpud1supress Ang II induced hypertrophy of cardiomyocyte. Silencing Herpud1 accelerate the NFAT nuclear translocation. Overexpression of Herpud1 block the NFAT nuclear translocation.
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8
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Dissecting the Mechanism of Action of Spiperone-A Candidate for Drug Repurposing for Colorectal Cancer. Cancers (Basel) 2022; 14:cancers14030776. [PMID: 35159043 PMCID: PMC8834219 DOI: 10.3390/cancers14030776] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/25/2022] [Accepted: 01/29/2022] [Indexed: 02/05/2023] Open
Abstract
Simple Summary Despite advances in primary and adjuvant treatments, approximately 50% of colorectal cancer (CRC) patients still die from recurrence and metastatic disease. Thus, alternative and more effective therapeutic approaches are expected to be developed. Drug repurposing is increasing interest in cancer therapy, as it represents a cheaper and faster alternative strategy to de novo drug synthesis. Psychiatric medications are promising as a new generation of antitumor drugs. Here, we demonstrate that spiperone—a licensed drug for the treatment of schizophrenia—induces apoptosis in CRC cells. Our data reveal that spiperone’s cytotoxicity in CRC cells is mediated by phospholipase C activation, intracellular calcium homeostasis dysregulation, and irreversible endoplasmic reticulum stress induction, resulting in lipid metabolism alteration and Golgi apparatus damage. By identifying new targetable pathways in CRC cells, our findings represent a promising starting point for the design of novel therapeutic strategies for CRC. Abstract Approximately 50% of colorectal cancer (CRC) patients still die from recurrence and metastatic disease, highlighting the need for novel therapeutic strategies. Drug repurposing is attracting increasing attention because, compared to traditional de novo drug discovery processes, it may reduce drug development periods and costs. Epidemiological and preclinical evidence support the antitumor activity of antipsychotic drugs. Herein, we dissect the mechanism of action of the typical antipsychotic spiperone in CRC. Spiperone can reduce the clonogenic potential of stem-like CRC cells (CRC-SCs) and induce cell cycle arrest and apoptosis, in both differentiated and CRC-SCs, at clinically relevant concentrations whose toxicity is negligible for non-neoplastic cells. Analysis of intracellular Ca2+ kinetics upon spiperone treatment revealed a massive phospholipase C (PLC)-dependent endoplasmic reticulum (ER) Ca2+ release, resulting in ER Ca2+ homeostasis disruption. RNA sequencing revealed unfolded protein response (UPR) activation, ER stress, and induction of apoptosis, along with IRE1-dependent decay of mRNA (RIDD) activation. Lipidomic analysis showed a significant alteration of lipid profile and, in particular, of sphingolipids. Damage to the Golgi apparatus was also observed. Our data suggest that spiperone can represent an effective drug in the treatment of CRC, and that ER stress induction, along with lipid metabolism alteration, represents effective druggable pathways in CRC.
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9
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Jia SZ, Xu XW, Zhang ZH, Chen C, Chen YB, Huang SL, Liu Q, Hoffmann PR, Song GL. Selenoprotein K deficiency-induced apoptosis: A role for calpain and the ERS pathway. Redox Biol 2021; 47:102154. [PMID: 34601426 PMCID: PMC8495175 DOI: 10.1016/j.redox.2021.102154] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/26/2021] [Accepted: 09/27/2021] [Indexed: 11/20/2022] Open
Abstract
Selenoprotein K (SELENOK), an endoplasmic reticulum (ER) resident protein, is regulated by dietary selenium and expressed at a relatively high level in neurons. SELENOK has been shown to participate in oxidation resistance, calcium (Ca2+) flux regulation, and the ER-associated degradation (ERAD) pathway in immune cells. However, its role in neurons has not been elucidated. Here, we demonstrated that SELENOK gene knockout markedly enhanced ER stress (ERS) and increased apoptosis in neurons. SELENOK gene knockout elicited intracellular Ca2+ flux and activated the m-calpain/caspase-12 cascade, thus inducing neuronal apoptosis both in vivo and in vitro. In addition, SELENOK knockout significantly reduced cognitive ability and increased anxiety in 7-month-old mice. Our findings reveal an unexpected role of SELENOK in regulating ERS-induced neuronal apoptosis.
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Affiliation(s)
- Shi-Zheng Jia
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Xin-Wen Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Zhong-Hao Zhang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Shenzhen Bay Laboratory, Shenzhen, China
| | - Chen Chen
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Yu-Bin Chen
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Shao-Ling Huang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Qiong Liu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Peter R Hoffmann
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA.
| | - Guo-Li Song
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Shenzhen Bay Laboratory, Shenzhen, China; Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.
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10
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Luizet JB, Raymond J, Lacerda TLS, Barbieux E, Kambarev S, Bonici M, Lembo F, Willemart K, Borg JP, Celli J, Gérard FCA, Muraille E, Gorvel JP, Salcedo SP. The Brucella effector BspL targets the ER-associated degradation (ERAD) pathway and delays bacterial egress from infected cells. Proc Natl Acad Sci U S A 2021; 118:e2105324118. [PMID: 34353909 PMCID: PMC8364137 DOI: 10.1073/pnas.2105324118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Perturbation of the endoplasmic reticulum (ER), a central organelle of the cell, can have critical consequences for cellular homeostasis. An elaborate surveillance system known as ER quality control ensures that cells can respond and adapt to stress via the unfolded protein response (UPR) and that only correctly assembled proteins reach their destination. Interestingly, several bacterial pathogens hijack the ER to establish an infection. However, it remains poorly understood how bacterial pathogens exploit ER quality-control functions to complete their intracellular cycle. Brucella spp. replicate extensively within an ER-derived niche, which evolves into specialized vacuoles suited for exit from infected cells. Here we present Brucella-secreted protein L (BspL), a Brucella abortus effector that interacts with Herp, a central component of the ER-associated degradation (ERAD) machinery. We found that BspL enhances ERAD at the late stages of the infection. BspL targeting of Herp and ERAD allows tight control of the kinetics of autophagic Brucella-containing vacuole formation, delaying the last step of its intracellular cycle and cell-to-cell spread. This study highlights a mechanism by which a bacterial pathogen hijacks ERAD components for fine regulation of its intracellular trafficking.
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Affiliation(s)
- Jean-Baptiste Luizet
- Laboratory of Molecular Microbiology and Structural Biochemistry, CNRS UMR5086, Université de Lyon, 69367 Lyon, France
| | - Julie Raymond
- Laboratory of Molecular Microbiology and Structural Biochemistry, CNRS UMR5086, Université de Lyon, 69367 Lyon, France
| | - Thais Lourdes Santos Lacerda
- Laboratory of Molecular Microbiology and Structural Biochemistry, CNRS UMR5086, Université de Lyon, 69367 Lyon, France
| | - Emeline Barbieux
- Department of Biology, Research Unit in Microorganisms Biology, Namur Research Institute for Life Sciences, 5000 Namur, Belgium
- Laboratory of Parasitology, Université Libre de Bruxelles Centre for Research in Immunology (UCRI), Université Libre de Bruxelles, 6041 Gosselies, Belgium
| | - Stanimir Kambarev
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA 99164
| | - Magali Bonici
- Laboratory of Molecular Microbiology and Structural Biochemistry, CNRS UMR5086, Université de Lyon, 69367 Lyon, France
| | - Frédérique Lembo
- Equipe labellisée Ligue 'Cell Polarity, Cell Signaling and Cancer', Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, Aix-Marseille Université, CNRS, INSERM, 13009 Marseille, France
| | - Kévin Willemart
- Department of Biology, Research Unit in Microorganisms Biology, Namur Research Institute for Life Sciences, 5000 Namur, Belgium
| | - Jean-Paul Borg
- Equipe labellisée Ligue 'Cell Polarity, Cell Signaling and Cancer', Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, Aix-Marseille Université, CNRS, INSERM, 13009 Marseille, France
- Institut Universitaire de France, 75231 Paris, France
| | - Jean Celli
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA 99164
| | - Francine C A Gérard
- Laboratory of Molecular Microbiology and Structural Biochemistry, CNRS UMR5086, Université de Lyon, 69367 Lyon, France
| | - Eric Muraille
- Department of Biology, Research Unit in Microorganisms Biology, Namur Research Institute for Life Sciences, 5000 Namur, Belgium
- Laboratory of Parasitology, Université Libre de Bruxelles Centre for Research in Immunology (UCRI), Université Libre de Bruxelles, 6041 Gosselies, Belgium
| | - Jean-Pierre Gorvel
- Centre d'Immunologie de Marseille-Luminy, CNRS, INSERM, Aix-Marseille Université, 13009 Marseille, France
| | - Suzana P Salcedo
- Laboratory of Molecular Microbiology and Structural Biochemistry, CNRS UMR5086, Université de Lyon, 69367 Lyon, France;
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11
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Oh-Hashi K, Hasegawa T, Mizutani Y, Takahashi K, Hirata Y. Elucidation of brefeldin A-induced ER and Golgi stress responses in Neuro2a cells. Mol Cell Biochem 2021; 476:3869-3877. [PMID: 34129155 DOI: 10.1007/s11010-021-04187-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 05/18/2021] [Indexed: 12/11/2022]
Abstract
Brefeldin A (BFA) disrupts the structure of the Golgi apparatus to trigger ER stress signaling pathways. On the other hand, treatment with BFA induces the activation of CREB3, the protein structure of which is similar to that of ATF6. In this study, we established Neuro2a cells in which three different transcription factors, namely, ATF4, ATF3 and CREB3, were deficient using the CRISPR/Cas9 approach, and we investigated the BFA-induced ER and Golgi stress response in these cells. BFA treatment rapidly induced ATF4, ATF3, Herp and GADD153 protein expression in Neuro2a cells. ATF4-deficient Neuro2a cells exhibited significantly decreased mRNA and protein expression of ATF3 and Herp but not GADD153; however, cells deficient in ATF3 exhibited minimal effects on GADD34, GADD153 and Herp expression. The cleavage of CREB3 in Neuro2a cells was triggered by BFA; however, the expression of several ER and Golgi stress-related factors was hardly influenced by the CREB3 deficiency in these Neuro2a cells. This study shows that CREB3 minimally associates with typical ER stress-inducible responses in Neuro2a cells. Therefore, identification and characterization of the downstream transcriptional targets of CREB3 is required to clarify not only Golgi stress response but also its relationship with ER stress signaling pathways.
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Affiliation(s)
- Kentaro Oh-Hashi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan. .,Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan. .,Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
| | - Tomoyuki Hasegawa
- Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Yuri Mizutani
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Kanto Takahashi
- Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Yoko Hirata
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.,Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.,Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
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12
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Transcriptomic Changes Associated with Loss of Cell Viability Induced by Oxysterol Treatment of a Retinal Photoreceptor-Derived Cell Line: An In Vitro Model of Smith-Lemli-Opitz Syndrome. Int J Mol Sci 2021; 22:ijms22052339. [PMID: 33652836 PMCID: PMC7956713 DOI: 10.3390/ijms22052339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/19/2021] [Accepted: 02/21/2021] [Indexed: 11/17/2022] Open
Abstract
Smith–Lemli–Opitz Syndrome (SLOS) results from mutations in the gene encoding the enzyme DHCR7, which catalyzes conversion of 7-dehydrocholesterol (7DHC) to cholesterol (CHOL). Rats treated with a DHCR7 inhibitor serve as a SLOS animal model, and exhibit progressive photoreceptor-specific cell death, with accumulation of 7DHC and oxidized sterols. To understand the basis of this cell type specificity, we performed transcriptomic analyses on a photoreceptor-derived cell line (661W), treating cells with two 7DHC-derived oxysterols, which accumulate in tissues and bodily fluids of SLOS patients and in the rat SLOS model, as well as with CHOL (negative control), and evaluated differentially expressed genes (DEGs) for each treatment. Gene enrichment analysis and compilation of DEG sets indicated that endoplasmic reticulum stress, oxidative stress, DNA damage and repair, and autophagy were all highly up-regulated pathways in oxysterol-treated cells. Detailed analysis indicated that the two oxysterols exert their effects via different molecular mechanisms. Changes in expression of key genes in highlighted pathways (Hmox1, Ddit3, Trib3, and Herpud1) were validated by immunofluorescence confocal microscopy. The results extend our understanding of the pathobiology of retinal degeneration and SLOS, identifying potential new druggable targets for therapeutic intervention into these and other related orphan diseases.
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13
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Qu J, Zou T, Lin Z. The Roles of the Ubiquitin-Proteasome System in the Endoplasmic Reticulum Stress Pathway. Int J Mol Sci 2021; 22:1526. [PMID: 33546413 PMCID: PMC7913544 DOI: 10.3390/ijms22041526] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 02/07/2023] Open
Abstract
The endoplasmic reticulum (ER) is a highly dynamic organelle in eukaryotic cells, which is essential for synthesis, processing, sorting of protein and lipid metabolism. However, the cells activate a defense mechanism called endoplasmic reticulum stress (ER stress) response and initiate unfolded protein response (UPR) as the unfolded proteins exceed the folding capacity of the ER due to the environmental influences or increased protein synthesis. ER stress can mediate many cellular processes, including autophagy, apoptosis and senescence. The ubiquitin-proteasome system (UPS) is involved in the degradation of more than 80% of proteins in the cells. Today, increasing numbers of studies have shown that the two important components of UPS, E3 ubiquitin ligases and deubiquitinases (DUBs), are tightly related to ER stress. In this review, we summarized the regulation of the E3 ubiquitin ligases and DUBs in ER stress.
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Affiliation(s)
| | | | - Zhenghong Lin
- School of Life Sciences, Chongqing University, Chongqing 401331, China; (J.Q.); (T.Z.)
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14
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Dušková L, Nohelová L, Loja T, Fialová J, Zapletalová P, Réblová K, Tichý L, Freiberger T, Fajkusová L. Low Density Lipoprotein Receptor Variants in the Beta-Propeller Subdomain and Their Functional Impact. Front Genet 2020; 11:691. [PMID: 32695144 PMCID: PMC7339958 DOI: 10.3389/fgene.2020.00691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 06/05/2020] [Indexed: 12/12/2022] Open
Abstract
Background: Pathogenic variants in the low density lipoprotein receptor gene are associated with familial hypercholesterolemia. Some of these variants can result in incorrect folding of the LDLR protein, which is then accumulated inside the cell and cannot fulfill its function to internalize LDL particles. We analyzed the functional impact of 10 LDLR variants localized in the beta-propeller of epidermal growth factor precursor homology domain. The experimental part of the work was complemented by a structural analysis on the basis of 3D LDLR protein structure. Methods: T-Rex Chinese hamster ovary cells transfected with the human LDLR gene were used for live cell imaging microscopy, flow cytometry, and qRT-PCR analysis. Results: Our results showed that the analyzed LDLR protein variants can be divided into three groups. (1) The variants buried inside the 3D protein structure expressing proteins accumulated in the endoplasmic reticulum (ER) with no or reduced plasma membrane localization and LDL particle internalization, and associated with an increased gene expression of ER-resident chaperones. (2) The variants localized on the surface of 3D protein structure with slightly reduced LDLR plasma membrane localization and LDL particle internalization, and associated with no increased mRNA level of ER-resident chaperones. (3) The variants localized on the surface of the 3D protein structure but expressing proteins with cell responses similar to the group 1. Conclusion: All analyzed LDLR variants have been evaluated as pathogenic but with different effects on protein localization and function, and expression of genes associated with ER stress.
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Affiliation(s)
- Lucie Dušková
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia
| | - Lucie Nohelová
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia
| | - Tomáš Loja
- Central European Institute of Technology, Masaryk University, Brno, Czechia
| | - Jana Fialová
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia.,Central European Institute of Technology, Masaryk University, Brno, Czechia
| | - Petra Zapletalová
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia
| | - Kamila Réblová
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia.,Central European Institute of Technology, Masaryk University, Brno, Czechia
| | - Lukáš Tichý
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia
| | - Tomáš Freiberger
- Centre for Cardiovascular Surgery and Transplantation, Brno, Czechia.,Medical Faculty, Masaryk University, Brno, Czechia
| | - Lenka Fajkusová
- Centre of Molecular Biology and Gene Therapy, University Hospital Brno, Brno, Czechia.,Medical Faculty, Masaryk University, Brno, Czechia.,Laboratory of Functional Genomics and Proteomics, National Centre for Biomolecular Research (NCBR), Faculty of Science, Masaryk University, Brno, Czechia
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15
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Liu C, Xu X, Huang C, Zhang L, Shang D, Cai W, Wang Y. Circ_002664/miR-182-5p/Herpud1 pathway importantly contributes to OGD/R-induced neuronal cell apoptosis. Mol Cell Probes 2020; 53:101585. [PMID: 32376213 DOI: 10.1016/j.mcp.2020.101585] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/15/2020] [Accepted: 04/27/2020] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Apoptosis is a prominent form of neuron death in cerebral ischemia-reperfusion-induced injury. Accompanied with the pathogenesis, Circ_002664 is upregulated. However, its role in the neuron apoptosis and the underlying mechanisms are unknown. METHODS In this study, HT22 cells were treated with oxygen glucose deprivation and reoxygenation (OGD/R). The cell viability, apoptosis, proliferation and mitochondrial potential were examined. The expressions of interested genes, Circ_002664, miR-182-5p and Herpud1, were measured. The roles of these genes in OGD/R-induced cell injury were investigated by knockdown, overexpression alone or in combination. Additionally, the interactions between Circ_002664, miR-182-5p and Herpud1 were validated by luciferase report assay. The levels of MAP2, CHOP, Cytochrome C (CYC) and cleaved caspase-3 were determined. RESULTS OGD/R treatment significantly increased cell apoptosis, decreased cell proliferation and mitochondrial potential, as well as increased Circ_002664 and Herpud1 expressions, and decreased miR-182-5p level. Circ_002664 knockdown markedly inhibited the effects by OGD/R on cell survival and altered expression of miR-182-5p and Herpud1. MiR-182-5p was observed sponged by Circ_002664 and negatively mediated its effect above mentioned, and this was by directly targeting Herpud1. Additionally, it was observed that CHOP expressions were regulated by Circ_002664/miR-182-5p/Herpud1 pathway, and in turn mediated its regulation in CYC and cleaved caspase-3. CONCLUSIONS In summary, our data showed that the Circ_002664 importantly contributed to neuronal cell apoptosis induced by OGD/R treatment, and this might be achieved by directly targeting miR-182-5p/Herpud1 pathway.
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Affiliation(s)
- Chao Liu
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China.
| | - Xiaohui Xu
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China
| | - Chao Huang
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China
| | - Li Zhang
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China
| | - Dandan Shang
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China
| | - Weiwei Cai
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China
| | - Yupeng Wang
- Department of Neurology, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan, 471000, China
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16
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Alves de Souza CE, Pires ADRA, Cardoso CR, Carlos RM, Cadena SMSC, Acco A. Antineoplastic activity of a novel ruthenium complex against human hepatocellular carcinoma (HepG2) and human cervical adenocarcinoma (HeLa) cells. Heliyon 2020; 6:e03862. [PMID: 32405548 PMCID: PMC7210510 DOI: 10.1016/j.heliyon.2020.e03862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/21/2019] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Novel metal complexes have received much attention recently because of their potential anticancer activity. Notably, ruthenium-based complexes have emerged as good alternatives to the currently used platinum-based drugs for cancer therapy, with less toxicity and fewer side effects. The beneficial properties of Ru, which make it a highly promising therapeutic agent, include its variable oxidative states, low toxicity, and high selectivity for cancer cells. The present study evaluated the cytotoxic effects of a ruthenium complex, namely cis-[Ru(1,10-phenanthroline)2(imidazole)2]2+ (RuC), on human hepatocellular carcinoma (HepG2) and human cervical adenocarcinoma (HeLa) cells and analyzed metabolic parameters. RuC reduced HepG2 and HeLa cell viability at all tested concentrations (10, 50, and 100 nmol/L) at 48 h of incubation, based on the MTT, Crystal violet, and neutral red assays. The proliferation capacity of HepG2 cells did not recover, whereas HeLa cell proliferation partially recovered after RuC treatment. RuC also inhibited all states of cell respiration and increased the levels of the metabolites pyruvate and lactate in both cell lines. The cytotoxicity of RuC was higher than cisplatin (positive control) in both lineages. These results indicate that RuC affects metabolic functions that are related to the energy provision and viability of HepG2 and HeLa cells and is a promising candidate for further investigations that utilize models of human cervical adenocarcinoma and mainly hepatocellular carcinoma.
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Affiliation(s)
| | | | | | - Rose Maria Carlos
- Department of Chemistry, Federal São Carlos University, São Carlos, Brazil
| | | | - Alexandra Acco
- Department of Pharmacology, Federal University of Parana, Curitiba, Brazil
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17
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Pathways of protein synthesis and degradation in PD pathogenesis. PROGRESS IN BRAIN RESEARCH 2020; 252:217-270. [PMID: 32247365 DOI: 10.1016/bs.pbr.2020.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Since the discovery of protein aggregates in the brains of individuals with Parkinson's disease (PD) in the early 20th century, the scientific community has been interested in the role of dysfunctional protein metabolism in PD etiology. Recent advances in the field have implicated defective protein handling underlying PD through genetic, in vitro, and in vivo studies incorporating many disease models alongside neuropathological evidence. Here, we discuss the existing body of research focused on understanding cellular pathways of protein synthesis and degradation, and how aberrations in either system could engender PD pathology with special attention to α-synuclein-related consequences. We consider transcription, translation, and post-translational modification to constitute protein synthesis, and protein degradation to encompass proteasome-, lysosome- and endoplasmic reticulum-dependent mechanisms. Novel findings connecting each of these steps in protein metabolism to development of PD indicate that deregulation of protein production and turnover remains an exciting area in PD research.
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18
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Chen L, Liu YC, Tan H, Zhang Y, Xu J, Liu WL, Li ZY, Li WP. Santacruzamate A Ameliorates AD-Like Pathology by Enhancing ER Stress Tolerance Through Regulating the Functions of KDELR and Mia40-ALR in vivo and in vitro. Front Cell Neurosci 2019; 13:61. [PMID: 30886573 PMCID: PMC6409322 DOI: 10.3389/fncel.2019.00061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 02/06/2019] [Indexed: 11/13/2022] Open
Abstract
Aggregated amyloid-β protein (Aβ) and Aβ-induced neuronal apoptosis have been implicated as critical factors in the pathophysiology of Alzheimer’s disease (AD). Certain preclinical results have indicated that the increased accumulation of protein aggregates in AD-affected neurons activates the unfolded protein response (UPR), a pathological phenomenon, which predominantly mediates the aberrant endoplasmic reticulum (ER) stress and apoptotic cascades in neuronal cells. In the present study, we confirmed that Santacruzamate A (STA, a natural product isolated from a Panamanian marine cyanobacterium) attenuates Aβ protein fragment 25–35 (Aβ25–35)-induced toxicity in PC12 cells and rescues cognitive deficits in APPswe/PS1dE9 mice by enhancing ER stress tolerance. We first demonstrated the anti-apoptotic effects of STA by evaluating caspase-3 activity, annexin V/propidium iodide (PI) staining, and terminal deoxynucleotidyl transferase dUTP nick end labeling staining. Behavioral testing of STA-treated APPswe/PS1dE9 mice showed that the pronounced memory impairments were ameliorated and that the consolidated memories were stably maintained over a 2-week period. The mechanistic studies provided evidence that STA inhibited Aβ25–35-induced UPR and ER stress by regulating the ER retention signal (KDEL) receptor, which reinforced the retention of resident chaperones in the ER lumen. Furthermore, STA regulated the expression of the mitochondrial intermembrane space assembly protein 40 (Mia40) and augmenter of liver regeneration (ALR), which ultimately attenuated the mitochondrial fission and apoptosis pathways. Together, our present findings suggest that the KDEL receptor and Mia40-ALR play a role in mitigating Aβ25–35-induced neurotoxicity, which might in turn positively regulate learning and memory. These observations support that STA may be a promising agent for reversing the progression of AD.
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Affiliation(s)
- Lei Chen
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
| | | | - Hui Tan
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
| | - Yuan Zhang
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
| | - Ji Xu
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
| | - Wen-Lan Liu
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
| | - Zong-Yang Li
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
| | - Wei-Ping Li
- Shenzhen Key Laboratory of Neurosurgery, Brain Center, Shenzhen Second People's Hospital, Shenzhen University 1st Affiliated Hospital, Shenzhen, China
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19
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Oh-Hashi K, Matsumoto S, Sakai T, Hirata Y, Okuda K, Nagasawa H. Effects of 2-(2-Chlorophenyl)ethylbiguanide on ERAD Component Expression in HT-29 Cells Under a Serum- and Glucose-Deprived Condition. Appl Biochem Biotechnol 2019; 188:1009-1021. [PMID: 30783947 DOI: 10.1007/s12010-019-02969-4] [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: 11/14/2018] [Accepted: 02/01/2019] [Indexed: 12/24/2022]
Abstract
We recently characterized the cytotoxic action of a novel phenformin derivative, 2-(2-chlorophenyl)ethylbiguanide (2-Cl-Phen), on HT-29 cells under a serum- and glucose-deprived condition and found that 2-Cl-Phen attenuated ATF4 and GRP78, typical downstream targets of the unfolded protein response (UPR), together with c-Myc protein expression in a transcriptional and posttranscriptional manner. In the current study, we focused on the expression of ER-associated protein degradation (ERAD) components after treatment with 2-Cl-Phen under a serum- and glucose-deprived condition. Among nine ER-localizing factors regulating protein quality control within the ER, the amounts of Herp, GRP78, GRP94, and OS9 proteins were significantly downregulated by treatment with 2-Cl-Phen. In particular, replacement of the culture medium with the serum- and glucose-deprived medium induced the expression of Herp protein at the early phase. This increase in Herp protein was accompanied by an increase in its mRNA, and its induction was significantly dampened by 2-Cl-Phen. However, cotreatment with a proteasome inhibitor, MG132, restored Herp expression only to a limited extent. Taken together, these results show that 2-Cl-Phen changed the expression of several ERAD components, especially by transcriptional inhibition of Herp induction by 2-Cl-Phen when it occurred at an early phase, and this finding provides new insights into understanding the mechanisms of 2-Cl-Phen-mediated cytotoxicity.
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Affiliation(s)
- Kentaro Oh-Hashi
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan. .,United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
| | - Shiori Matsumoto
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Takayuki Sakai
- Laboratory of Pharmaceutical & Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigakunishi, Gifu, 501-1196, Japan
| | - Yoko Hirata
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.,United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Kensuke Okuda
- Laboratory of Pharmaceutical & Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigakunishi, Gifu, 501-1196, Japan.,Laboratory of Bioorganic & Natural Products Chemistry, Kobe Pharmaceutical University, 4-19-1, Motoyama-kita, Higashinada, Kobe, 658-8558, Japan
| | - Hideko Nagasawa
- Laboratory of Pharmaceutical & Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigakunishi, Gifu, 501-1196, Japan
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20
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Chen F, Wen X, Lin P, Chen H, Wang A, Jin Y. HERP depletion inhibits zearalenone-induced apoptosis through autophagy activation in mouse ovarian granulosa cells. Toxicol Lett 2018; 301:1-10. [PMID: 30394307 DOI: 10.1016/j.toxlet.2018.10.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/25/2018] [Accepted: 10/22/2018] [Indexed: 12/21/2022]
Abstract
HERP is an endoplasmic reticulum (ER) membrane protein and is strongly induced by stress conditions. A recent study has indicated that HERP cooperates in apoptosis during zearalenone (ZEA) treatment. However, regulatory mechanisms and the role of HERP in ZEA-induced apoptosis remain elusive in ovarian granulosa cells. In this study, MTT and flow cytometry assays demonstrated that ZEA gradually decreased cell viability and increased apoptosis in granulosa cells in a dose-dependent manner. Western blot analysis showed that ZEA significantly activated autophagy by upregulating LC3-II. Chloroquine (CQ) significantly increased LC3-II and induced granulosa cell apoptosis. Moreover, Western blot analysis showed that ZEA inhibited the mTOR and ERK1/2 signaling pathways. Furthermore, we found that ZEA activated ER stress by upregulating the ER stress-related proteins GRP78, HERP and CHOP. 4-PBA significantly decreased GRP78, HERP, CHOP and LC3-II. In addition, knockdown of HERP (shHERP) significantly protected ovarian granulosa cells from apoptosis induced by ZEA. We found that HERP depletion activated autophagy and ERK1/2 signaling pathways, while it inhibited the mTOR and caspase-dependent mitochondrial signaling pathways. In summary, autophagy and ER stress cooperated in apoptosis induced by ZEA; HERP depletion inhibits ZEA-induced apoptosis of ovarian granulosa cells through autophagy activation and apoptotic pathway inhibition.
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Affiliation(s)
- Fenglei Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China
| | - Xin Wen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Pengfei Lin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Huatao Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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21
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Neohesperidin Prevents Aβ25–35-Induced Apoptosis in Primary Cultured Hippocampal Neurons by Blocking the S-Nitrosylation of Protein-Disulphide Isomerase. Neurochem Res 2018; 43:1736-1744. [DOI: 10.1007/s11064-018-2589-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 06/04/2018] [Accepted: 06/24/2018] [Indexed: 01/06/2023]
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22
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Navarro-Marquez M, Torrealba N, Troncoso R, Vásquez-Trincado C, Rodriguez M, Morales PE, Villalobos E, Eura Y, Garcia L, Chiong M, Klip A, Jaimovich E, Kokame K, Lavandero S. Herpud1 impacts insulin-dependent glucose uptake in skeletal muscle cells by controlling the Ca2+-calcineurin-Akt axis. Biochim Biophys Acta Mol Basis Dis 2018; 1864:1653-1662. [DOI: 10.1016/j.bbadis.2018.02.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 02/17/2018] [Accepted: 02/20/2018] [Indexed: 01/08/2023]
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23
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Américo-Da-Silva L, Diaz J, Bustamante M, Mancilla G, Oyarzún I, Verdejo HE, Quiroga C. A new role for HERPUD1 and ERAD activation in osteoblast differentiation and mineralization. FASEB J 2018; 32:4681-4695. [PMID: 29570393 DOI: 10.1096/fj.201701229rr] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Bone integrity depends on a finely tuned balance between bone synthesis by osteoblasts and resorption by osteoclasts. The secretion capacity of mature osteoblasts requires strict control of proteostasis. Endoplasmic reticulum-associated degradation (ERAD) prevents the accumulation of unfolded ER proteins via dislocation to the cytosol and degradation by the proteasome. The ER membrane protein, homocysteine-inducible endoplasmic reticulum protein with ubiquitin-like domain 1 (HERPUD1), is a key component of the ERAD multiprotein complex which helps to stabilize the complex and facilitate the efficient degradation of unfolded proteins. HERPUD1 expression is strongly up-regulated by the unfolded protein response and cellular stress. The aim of the current study was to establish whether HERPUD1 and ERAD play roles in osteoblast differentiation and maturation. We evaluated preosteoblastic MC3T3-E1 cell and primary rat osteoblast differentiation by measuring calcium deposit levels, alkaline phosphatase activity, and runt-related transcription factor 2 and osterix expression. We found that ERAD and proteasomal degradation were activated and that HERPUD1 expression was increased as osteoblast differentiation progressed. The absence of HERPUD1 blocked osteoblast mineralization in vitro and significantly reduced alkaline phosphatase activity. In contrast, HERPUD1 overexpression activated the osteoblast differentiation program. Our results demonstrate that HERPUD1 and ERAD are important for the activation of the osteoblast maturation program and may be useful new targets for elucidating bone physiology.-Américo-Da-Silva, L., Diaz, J., Bustamante, M., Mancilla, G., Oyarzún, I., Verdejo, H. E., Quiroga, C. A new role for HERPUD1 and ERAD activation in osteoblast differentiation and mineralization.
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Affiliation(s)
- Luan Américo-Da-Silva
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jheimmy Diaz
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mario Bustamante
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Universidad de Chile and Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Georthan Mancilla
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Universidad de Chile and Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ingrid Oyarzún
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Universidad de Chile and Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Hugo E Verdejo
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Universidad de Chile and Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Clara Quiroga
- División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Universidad de Chile and Pontificia Universidad Católica de Chile, Santiago, Chile
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24
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Shim SM, Choi HR, Sung KW, Lee YJ, Kim ST, Kim D, Mun SR, Hwang J, Cha-Molstad H, Ciechanover A, Kim BY, Kwon YT. The endoplasmic reticulum-residing chaperone BiP is short-lived and metabolized through N-terminal arginylation. Sci Signal 2018; 11:11/511/eaan0630. [PMID: 29295953 DOI: 10.1126/scisignal.aan0630] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
BiP and other endoplasmic reticulum (ER)-resident proteins are thought to be metabolically stable and to function primarily in the ER lumen. We sought to assess how the abundance of these proteins dynamically fluctuates in response to various stresses and how their subpopulations are relocated to non-ER compartments such as the cytosol. We showed that the molecular chaperone BiP (also known as GRP78) was short-lived under basal conditions and ER stress. The turnover of BiP was in part driven by its amino-terminal arginylation (Nt-arginylation) by the arginyltransferase ATE1, which generated an autophagic N-degron of the N-end rule pathway. ER stress elicited the formation of R-BiP, an effect that was increased when the proteasome was also inhibited. Nt-arginylation correlated with the cytosolic relocalization of BiP under the types of stress tested. The cytosolic relocalization of BiP did not require the functionality of the unfolded protein response or the Sec61- or Derlin1-containing translocon. A key inhibitor of the turnover and Nt-arginylation of BiP was HERP (homocysteine-responsive ER protein), a 43-kDa ER membrane-integrated protein that is an essential component of ER-associated protein degradation. Pharmacological inhibition of the ER-Golgi secretory pathway also suppressed R-BiP formation. Finally, we showed that cytosolic R-BiP induced by ER stress and proteasomal inhibition was routed to autophagic vacuoles and possibly additional metabolic fates. These results suggest that Nt-arginylation is a posttranslational modification that modulates the function, localization, and metabolic fate of ER-resident proteins.
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Affiliation(s)
- Sang Mi Shim
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Ha Rim Choi
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Ki Woon Sung
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Yoon Jee Lee
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Sung Tae Kim
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Center for Pharmacogenetics and Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Daeho Kim
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Su Ran Mun
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Joonsung Hwang
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 28116, Republic of Korea
| | - Hyunjoo Cha-Molstad
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 28116, Republic of Korea
| | - Aaron Ciechanover
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Tumor and Vascular Biology Research Center, Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa 31096, Israel
| | - Bo Yeon Kim
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon 28116, Republic of Korea.
| | - Yong Tae Kwon
- Protein Metabolism Medical Research Center, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea. .,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
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25
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Torrealba N, Navarro-Marquez M, Garrido V, Pedrozo Z, Romero D, Eura Y, Villalobos E, Roa JC, Chiong M, Kokame K, Lavandero S. Herpud1 negatively regulates pathological cardiac hypertrophy by inducing IP3 receptor degradation. Sci Rep 2017; 7:13402. [PMID: 29042597 PMCID: PMC5645377 DOI: 10.1038/s41598-017-13797-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 10/02/2017] [Indexed: 01/19/2023] Open
Abstract
Cardiac hypertrophy is an adaptive response triggered by pathological stimuli. Regulation of the synthesis and the degradation of the Ca2+ channel inositol 1,4,5-trisphosphate receptor (IP3R) affects progression to cardiac hypertrophy. Herpud1, a component of the endoplasmic reticulum-associated degradation (ERAD) complex, participates in IP3R1 degradation and Ca2+ signaling, but the cardiac function of Herpud1 remains unknown. We hypothesize that Herpud1 acts as a negative regulator of cardiac hypertrophy by regulating IP3R protein levels. Our results show that Herpud1-knockout mice exhibit cardiac hypertrophy and dysfunction and that decreased Herpud1 protein levels lead to elevated levels of hypertrophic markers in cultured rat cardiomyocytes. In addition, IP3R levels were elevated both in Herpud1-knockout mice and Herpud1 siRNA-treated rat cardiomyocytes. The latter treatment also led to elevated cytosolic and nuclear Ca2+ levels. In summary, the absence of Herpud1 generates a pathological hypertrophic phenotype by regulating IP3R protein levels. Herpud1 is a novel negative regulator of pathological cardiac hypertrophy.
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Affiliation(s)
- Natalia Torrealba
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile
| | - Mario Navarro-Marquez
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile
| | - Valeria Garrido
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile
| | - Zully Pedrozo
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile.,Instituto de Ciencias Biomédicas, Facultad de Medicina Universidad de Chile, Santiago, Chile
| | - Diego Romero
- Department of Pathology, Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Pontifical Catholic University of Chile, Santiago, Chile
| | - Yuka Eura
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Elisa Villalobos
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile.,Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Juan Carlos Roa
- Department of Pathology, Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Pontifical Catholic University of Chile, Santiago, Chile
| | - Mario Chiong
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile
| | - Koichi Kokame
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan.
| | - Sergio Lavandero
- Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Santiago, Chile. .,Instituto de Ciencias Biomédicas, Facultad de Medicina Universidad de Chile, Santiago, Chile. .,Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, Texas, USA.
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26
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Wang T, Wang B, Huang H, Zhang C, Zhu Y, Pei B, Cheng C, Sun L, Wang J, Jin Q, Zhao Z. Enterovirus 71 protease 2Apro and 3Cpro differentially inhibit the cellular endoplasmic reticulum-associated degradation (ERAD) pathway via distinct mechanisms, and enterovirus 71 hijacks ERAD component p97 to promote its replication. PLoS Pathog 2017; 13:e1006674. [PMID: 28985237 PMCID: PMC5650186 DOI: 10.1371/journal.ppat.1006674] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 10/20/2017] [Accepted: 09/28/2017] [Indexed: 11/19/2022] Open
Abstract
Endoplasmic reticulum-associated degradation (ERAD) is an important function for cellular homeostasis. The mechanism of how picornavirus infection interferes with ERAD remains unclear. In this study, we demonstrated that enterovirus 71 (EV71) infection significantly inhibits cellular ERAD by targeting multiple key ERAD molecules with its proteases 2Apro and 3Cpro using different mechanisms. Ubc6e was identified as the key E2 ubiquitin-conjugating enzyme in EV71 disturbed ERAD. EV71 3Cpro cleaves Ubc6e at Q219G, Q260S, and Q273G. EV71 2Apro mainly inhibits the de novo synthesis of key ERAD molecules Herp and VIMP at the protein translational level. Herp differentially participates in the degradation of different glycosylated ERAD substrates α-1 antitrypsin Null Hong Kong (NHK) and the C-terminus of sonic hedgehog (SHH-C) via unknown mechanisms. p97 was identified as a host factor in EV71 replication; it redistributed and co-exists with the viral protein and other known replication-related molecules in EV71-induced replication organelles. Electron microscopy and multiple-color confocal assays also showed that EV71-induced membranous vesicles were closely associated with the endoplasmic reticulum (ER), and the ER membrane molecule RTN3 was redistributed to the viral replication complex during EV71 infection. Therefore, we propose that EV71 rearranges ER membranes and hijacks p97 from cellular ERAD to benefit its replication. These findings add to our understanding of how viruses disturb ERAD and provide potential anti-viral targets for EV71 infection.
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Affiliation(s)
- Tao Wang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Bei Wang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - He Huang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Chongyang Zhang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Yuanmei Zhu
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Bin Pei
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Chaofei Cheng
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Lei Sun
- Center for Biological Imaging, Institute of Biophysics, Chinese Academy of Sciences, Beijing, PR China
| | - Jianwei Wang
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, IPB, CAMS-Fondation Mérieux, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
- * E-mail: (JWW); (QJ); (ZDZ)
| | - Qi Jin
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
- * E-mail: (JWW); (QJ); (ZDZ)
| | - Zhendong Zhao
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
- Center of Clinical Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
- CAMS-Oxford University International Center for Translational Immunology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
- * E-mail: (JWW); (QJ); (ZDZ)
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27
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Functional validation of ATF4 and GADD34 in Neuro2a cells by CRISPR/Cas9-mediated genome editing. Mol Cell Biochem 2017; 440:65-75. [PMID: 28825160 DOI: 10.1007/s11010-017-3156-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/05/2017] [Indexed: 12/13/2022]
Abstract
Activating transcription factor 4 (ATF4), which is ubiquitously expressed, plays a crucial role in regulating various stress-responsive genes under pathophysiological conditions. Further, growth arrest and DNA damage-inducible gene 34 (GADD34), a downstream target of ATF4, has been reported to negatively regulate ATF4 expression. To understand the relationship between intrinsic ATF4 and GADD34 under resting and ER stress conditions, we used a novel gene editing approach, CRISPR/Cas9, to integrate antibiotic-resistant genes into the target genes, ATF4 and GADD34. First, we manipulated the ATF4 gene in the mouse neuroblastoma cell line, Neuro2a, and compared the ER stress responses between parental and ATF4-edited Neuro2a cells. Next, we established Neuro2a cells with edited GADD34 and ATF4/GADD34 genes and found that ATF4 acts as a proapoptotic factor, but GADD34 depletion did not attenuate the expression of cleaved caspase-3 induced by tunicamycin treatment. These findings provide new insights into the ATF4 signaling cascades. Additionally, the rapid establishment of cells lacking multiple genes using this CRISPR/Cas9 system will be a powerful tool for exploring various cellular issues under pathophysiological conditions.
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28
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Joly P, Vignaud H, Di Martino J, Ruiz M, Garin R, Restier L, Belmalih A, Marchal C, Cullin C, Arveiler B, Fergelot P, Gitler AD, Lachaux A, Couthouis J, Bouchecareilh M. ERAD defects and the HFE-H63D variant are associated with increased risk of liver damages in Alpha 1-Antitrypsin Deficiency. PLoS One 2017; 12:e0179369. [PMID: 28617828 PMCID: PMC5472284 DOI: 10.1371/journal.pone.0179369] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/30/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The most common and severe disease causing allele of Alpha 1-Antitrypsin Deficiency (1ATD) is Z-1AT. This protein aggregates in the endoplasmic reticulum, which is the main cause of liver disease in childhood. Based on recent evidences and on the frequency of liver disease occurrence in Z-1AT patients, it seems that liver disease progression is linked to still unknown genetic factors. METHODS We used an innovative approach combining yeast genetic screens with next generation exome sequencing to identify and functionally characterize the genes involved in 1ATD associated liver disease. RESULTS Using yeast genetic screens, we identified HRD1, an Endoplasmic Reticulum Associated Degradation (ERAD) associated protein, as an inducer of Z-mediated toxicity. Whole exome sequencing of 1ATD patients resulted in the identification of two variants associated with liver damages in Z-1AT homozygous cases: HFE H63D and HERPUD1 R50H. Functional characterization in Z-1AT model cell lines demonstrated that impairment of the ERAD machinery combined with the HFE H63D variant expression decreased both cell proliferation and cell viability, while Unfolded Protein Response (UPR)-mediated cell death was hyperstimulated. CONCLUSION This powerful experimental pipeline allowed us to identify and functionally validate two genes involved in Z-1AT-mediated severe liver toxicity. This pilot study moves forward our understanding on genetic modifiers involved in 1ATD and highlights the UPR pathway as a target for the treatment of liver diseases associated with 1ATD. Finally, these findings support a larger scale screening for HERPUD1 R50H and HFE H63D variants in the sub-group of 1ATD patients developing significant chronic hepatic injuries (hepatomegaly, chronic cholestasis, elevated liver enzymes) and at risk developing liver cirrhosis.
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Affiliation(s)
- Philippe Joly
- University Lyon - University Claude Bernard Lyon 1 - EA 7424 – Inter-university Laboratory of Human Movement Science, Villeurbanne, France
- Laboratoire de Biochimie et biologie moléculaire Grand-Est, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Hélène Vignaud
- CNRS, University Bordeaux, UMR5095 Institut de Biochimie et Génétique Cellulaires, Bordeaux, France
| | - Julie Di Martino
- CNRS, University Bordeaux, UMR5095 Institut de Biochimie et Génétique Cellulaires, Bordeaux, France
- INSERM, University Bordeaux, UMR1053 Bordeaux Research In Translational Oncology, BaRITOn, Bordeaux, France
| | - Mathias Ruiz
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital of Lyon, Lyon, France
| | - Roman Garin
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital of Lyon, Lyon, France
| | - Lioara Restier
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital of Lyon, Lyon, France
| | - Abdelouahed Belmalih
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital of Lyon, Lyon, France
| | - Christelle Marchal
- CNRS, University Bordeaux, UMR5095 Institut de Biochimie et Génétique Cellulaires, Bordeaux, France
| | - Christophe Cullin
- CNRS, University Bordeaux, UMR5095 Institut de Biochimie et Génétique Cellulaires, Bordeaux, France
| | - Benoit Arveiler
- University Bordeaux, INSERM U1211, Laboratoire Maladies Rares, Génétique et Métabolisme (MRGM), Bordeaux, France
| | - Patricia Fergelot
- University Bordeaux, INSERM U1211, Laboratoire Maladies Rares, Génétique et Métabolisme (MRGM), Bordeaux, France
| | - Aaron D. Gitler
- Department of Genetics, Stanford University School of Medicine, Stanford, California, United States of America
| | - Alain Lachaux
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital of Lyon, Lyon, France
| | - Julien Couthouis
- Department of Genetics, Stanford University School of Medicine, Stanford, California, United States of America
| | - Marion Bouchecareilh
- CNRS, University Bordeaux, UMR5095 Institut de Biochimie et Génétique Cellulaires, Bordeaux, France
- INSERM, University Bordeaux, UMR1053 Bordeaux Research In Translational Oncology, BaRITOn, Bordeaux, France
- * E-mail:
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29
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Pieper LA, Strotbek M, Wenger T, Olayioye MA, Hausser A. ATF6β-based fine-tuning of the unfolded protein response enhances therapeutic antibody productivity of Chinese hamster ovary cells. Biotechnol Bioeng 2017; 114:1310-1318. [PMID: 28165157 DOI: 10.1002/bit.26263] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/19/2017] [Accepted: 01/29/2017] [Indexed: 01/15/2023]
Abstract
The dynamics of protein folding and secretion are key issues in improving the productivity and robustness of Chinese hamster ovary (CHO) producer cells. High recombinant protein secretion in CHO producer clones triggers the activation of the unfolded protein response (UPR), an intracellular response to the accumulation of unfolded and misfolded proteins in the endoplasmic reticulum (ER). We previously reported that the human microRNA (miRNA) miR-1287 enhances productivity in IgG-expressing CHO cells (CHO-IgG). Here, through next-generation sequencing (NGS), we identified the activating transcription factor 6 beta (ATF6β), a repressor of the pro-survival and UPR promoting factor ATF6α, as a direct target gene of miR-1287 in CHO-IgG cells. We show that the transient depletion of ATF6β resulted in enhanced specific productivity comparable to that of miR-1287-expressing CHO-IgG cells. Strikingly, stable ATF6β knockdown in CHO-IgG cells significantly improved antibody titer and viable cell density under fed-batch conditions. This was associated with the elevated expression of the UPR genes glucose-regulated protein 78 (GRP78), homocysteine inducible ER protein with ubiquitin like domain 1 (Herpud1) and CCAAT/enhancer-binding protein homologous protein (CHOP). We hence demonstrate that ATF6β-based cell line engineering is a promising strategy to improve the productivity of CHO producer cells by activating an optimally balanced UPR program. Biotechnol. Bioeng. 2017;114: 1310-1318. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Lisa A Pieper
- Institute of Cell Biology and Immunology, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany
| | - Michaela Strotbek
- Institute of Cell Biology and Immunology, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany
| | - Till Wenger
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riß, Germany
| | - Monilola A Olayioye
- Institute of Cell Biology and Immunology, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.,Stuttgart Research Center Systems Biology, University of Stuttgart, Stuttgart, Germany
| | - Angelika Hausser
- Institute of Cell Biology and Immunology, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.,Stuttgart Research Center Systems Biology, University of Stuttgart, Stuttgart, Germany
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Kobylewski SE, Henderson KA, Yamada KE, Eckhert CD. Activation of the EIF2α/ATF4 and ATF6 Pathways in DU-145 Cells by Boric Acid at the Concentration Reported in Men at the US Mean Boron Intake. Biol Trace Elem Res 2017; 176:278-293. [PMID: 27587023 PMCID: PMC5344959 DOI: 10.1007/s12011-016-0824-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 08/15/2016] [Indexed: 02/06/2023]
Abstract
Fruits, nuts, legumes, and vegetables are rich sources of boron (B), an essential plant nutrient with chemopreventive properties. Blood boric acid (BA) levels reflect recent B intake, and men at the US mean intake have a reported non-fasting level of 10 μM. Treatment of DU-145 prostate cancer cells with physiological concentrations of BA inhibits cell proliferation without causing apoptosis and activates eukaryotic initiation factor 2 (eIF2α). EIF2α induces cell differentiation and protects cells by redirecting gene expression to manage endoplasmic reticulum stress. Our objective was to determine the temporal expression of endoplasmic reticulum (ER) stress-activated genes in DU-145 prostate cells treated with 10 μM BA. Immunoblots showed post-treatment increases in eIF2α protein at 30 min and ATF4 and ATF6 proteins at 1 h and 30 min, respectively. The increase in ATF4 was accompanied by an increase in the expression of its downstream genes growth arrest and DNA damage-induced protein 34 (GADD34) and homocysteine-induced ER protein (Herp), but a decrease in GADD153/CCAAT/enhancer-binding protein homologous protein (CHOP), a pro-apoptotic gene. The increase in ATF6 was accompanied by an increase in expression of its downstream genes GRP78/BiP, calreticulin, Grp94, and EDEM. BA did not activate IRE1 or induce cleavage of XBP1 mRNA, a target of IRE1. Low boron status has been associated with increased cancer risk, low bone mineralization, and retinal degeneration. ATF4 and BiP/GRP78 function in osteogenesis and bone remodeling, calreticulin is required for tumor suppressor p53 function and mineralization of teeth, and BiP/GRP78 and EDEM prevent the aggregation of misfolded opsins which leads to retinal degeneration. The identification of BA-activated genes that regulate its phenotypic effects provides a molecular underpinning for boron nutrition and biology.
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Affiliation(s)
- Sarah E Kobylewski
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Kimberly A Henderson
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Kristin E Yamada
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Curtis D Eckhert
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA.
- Department of Environmental Health Sciences, University of California, Fielding School of Public Health, 650 Charles E. Young Dr., Los Angeles, CA, 90095, USA.
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31
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Manole E, Bastian AE, Butoianu N, Goebel HH. Myositis non-inflammatory mechanisms: An up-dated review. J Immunoassay Immunochem 2017; 38:115-126. [DOI: 10.1080/15321819.2017.1298525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Emilia Manole
- “Victor Babes” National Institute of Pathology, Bucharest, Romania
- Research Center, Colentina Clinical Hospital, Bucharest, Romania
| | - Alexandra E. Bastian
- Pathology Department, Colentina Clinical Hospital, Bucharest, Romania
- “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
| | - Niculina Butoianu
- Pediatric Neurology Department, Clinical Hospital “Prof. Dr. Al. Obregia”, Bucharest, Romania
| | - Hans H. Goebel
- Department of Neuropathology, Charité – Universitätsmedizin Berlin, Berlin, Germany
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Richard E, Brasil S, Leal F, Navarrete R, Vega A, Ecay MJ, Desviat LR, Pérez-Cerda C, Ugarte M, Merinero B, Pérez B. Isolated and Combined Remethylation Disorders. JOURNAL OF INBORN ERRORS OF METABOLISM AND SCREENING 2017. [DOI: 10.1177/2326409816685732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Eva Richard
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Sandra Brasil
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Fátima Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Rosa Navarrete
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Ana Vega
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - María Jesús Ecay
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Lourdes R. Desviat
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Celia Pérez-Cerda
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Magdalena Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Begoña Merinero
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
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Ding W, Chen R, Wu C, Chen W, Zhang H, Fan X, Wang H, Ji Y, Xie L, Ning X, Shen L. Increased expression of HERPUD1 involves in neuronal apoptosis after intracerebral hemorrhage. Brain Res Bull 2016; 128:40-47. [PMID: 27871950 DOI: 10.1016/j.brainresbull.2016.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 11/13/2016] [Accepted: 11/16/2016] [Indexed: 10/20/2022]
Abstract
Homocysteine-inducible endoplasmic reticulum stress-inducible ubiquitin-like domain member 1 protein (HERPUD1) is involved in endoplasmic reticulum stress response. Immense amounts of research showed HERPUD1 plays multiple roles in various models. In this work, we explored the role of HERPUD1 during the pathophysiological processes of intracerebral hemorrhage (ICH). Rat ICH model was established and verified by behavioral test. Western blot and immunohistochemistry revealed a significant up-regulation of HERPUD1 expression around the hematoma after ICH. Besides, the expression of cytochrome c (cyt c) and active caspase-3 increased accompanied to HERPUD1 expression. Double-labeled immunofluorescence indicated HERPUD1 mainly colocalized with neurons. Further study showed HERPUD1 silence brought about up-regulation of apoptosis markers including cyt c and active caspase-3 coupled with increased cell apoptosis in vitro model. All these findings suggested that HERPUD1 might play a protective role in ICH-induced neuronal apoptosis in rat models.
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Affiliation(s)
- Wensen Ding
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Rongrong Chen
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Chunshuai Wu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Weihai Chen
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Hongtian Zhang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Xingjuan Fan
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Hongmei Wang
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Yuteng Ji
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Lili Xie
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Xiaojin Ning
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Lihua Shen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China.
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Mirabelli C, Pelletier I, Téoulé F, Vidalain PO, Brisac C, Tangy F, Delpeyroux F, Blondel B. The CREB3-Herp signalling module limits the cytosolic calcium concentration increase and apoptosis induced by poliovirus. J Gen Virol 2016; 97:2194-2200. [PMID: 27405867 DOI: 10.1099/jgv.0.000544] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Poliovirus (PV)-induced apoptosis seems to play a major role in central nervous system (CNS) tissue injury, a crucial feature of the pathogenesis of poliomyelitis. We have previously shown that calcium (Ca2+) flux from the endoplasmic reticulum (ER) to the cytosol during PV infection is involved in apoptosis induction in human neuroblastoma cells. We show here that PV infection is associated with a transient upregulation of Herp (homocysteine-induced ER protein), a protein known to promote the degradation of ER-resident Ca2+ channels. Herp gene transcription is controlled by the transcription factor CREB3 (cAMP response element-binding protein 3). We found that the CREB3/Herp pathway limited the increase in cytosolic Ca2+ concentration and apoptosis early in PV infection. This may reduce the extent of PV-induced damage to the CNS during poliomyelitis.
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Affiliation(s)
- Carmen Mirabelli
- Institut Pasteur, Unité de Biologie des virus entériques, 25 rue du Dr Roux, 75015 Paris, France.,INSERM U994, Paris, France
| | - Isabelle Pelletier
- Institut Pasteur, Unité de Biologie des virus entériques, 25 rue du Dr Roux, 75015 Paris, France.,INSERM U994, Paris, France
| | - François Téoulé
- Institut Pasteur, Unité de Biologie des virus entériques, 25 rue du Dr Roux, 75015 Paris, France.,INSERM U994, Paris, France.,Université Versailles Saint-Quentin, Versailles, France
| | - Pierre-Olivier Vidalain
- Institut Pasteur, Unité de Génomique virale et vaccination, 25 rue du Dr Roux, 75015 Paris, France.,CNRS UMR 3569, Paris, France
| | - Cynthia Brisac
- Institut Pasteur, Unité de Biologie des virus entériques, 25 rue du Dr Roux, 75015 Paris, France.,Université Versailles Saint-Quentin, Versailles, France.,INSERM U994, Paris, France
| | - Frédéric Tangy
- Institut Pasteur, Unité de Génomique virale et vaccination, 25 rue du Dr Roux, 75015 Paris, France.,CNRS UMR 3569, Paris, France
| | - Francis Delpeyroux
- Institut Pasteur, Unité de Biologie des virus entériques, 25 rue du Dr Roux, 75015 Paris, France.,INSERM U994, Paris, France
| | - Bruno Blondel
- Institut Pasteur, Unité de Biologie des virus entériques, 25 rue du Dr Roux, 75015 Paris, France.,INSERM U994, Paris, France
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Laguesse S, Creppe C, Nedialkova DD, Prévot PP, Borgs L, Huysseune S, Franco B, Duysens G, Krusy N, Lee G, Thelen N, Thiry M, Close P, Chariot A, Malgrange B, Leidel SA, Godin JD, Nguyen L. A Dynamic Unfolded Protein Response Contributes to the Control of Cortical Neurogenesis. Dev Cell 2016; 35:553-567. [PMID: 26651292 DOI: 10.1016/j.devcel.2015.11.005] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 10/07/2015] [Accepted: 11/09/2015] [Indexed: 12/21/2022]
Abstract
The cerebral cortex contains layers of neurons sequentially generated by distinct lineage-related progenitors. At the onset of corticogenesis, the first-born progenitors are apical progenitors (APs), whose asymmetric division gives birth directly to neurons. Later, they switch to indirect neurogenesis by generating intermediate progenitors (IPs), which give rise to projection neurons of all cortical layers. While a direct lineage relationship between APs and IPs has been established, the molecular mechanism that controls their transition remains elusive. Here we show that interfering with codon translation speed triggers ER stress and the unfolded protein response (UPR), further impairing the generation of IPs and leading to microcephaly. Moreover, we demonstrate that a progressive downregulation of UPR in cortical progenitors acts as a physiological signal to amplify IPs and promotes indirect neurogenesis. Thus, our findings reveal a contribution of UPR to cell fate acquisition during mammalian brain development.
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Affiliation(s)
- Sophie Laguesse
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Catherine Creppe
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Danny D Nedialkova
- Max Planck Research Group for RNA Biology, Max Planck Institute for Molecular Biomedicine, Von-Esmarch-Strasse 54, 48149 Muenster, Germany; Cells-in-Motion Cluster of Excellence, University of Muenster, Albert-Schweitzer-Campus 1, 48129 Muenster, Germany
| | - Pierre-Paul Prévot
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Laurence Borgs
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sandra Huysseune
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Bénédicte Franco
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Guérin Duysens
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Nathalie Krusy
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Gabsang Lee
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Nicolas Thelen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Marc Thiry
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Pierre Close
- GIGA-Signal Transduction, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Alain Chariot
- GIGA-Signal Transduction, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sebastian A Leidel
- Max Planck Research Group for RNA Biology, Max Planck Institute for Molecular Biomedicine, Von-Esmarch-Strasse 54, 48149 Muenster, Germany; Faculty of Medicine, University of Muenster, 48129 Muenster, Germany; Cells-in-Motion Cluster of Excellence, University of Muenster, Albert-Schweitzer-Campus 1, 48129 Muenster, Germany
| | - Juliette D Godin
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium.
| | - Laurent Nguyen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium.
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Endoplasmic Reticulum Stress and Autophagy in Homocystinuria Patients with Remethylation Defects. PLoS One 2016; 11:e0150357. [PMID: 26959487 PMCID: PMC4784912 DOI: 10.1371/journal.pone.0150357] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 02/12/2016] [Indexed: 11/19/2022] Open
Abstract
Proper function of endoplasmic reticulum (ER) and mitochondria is crucial for cellular homeostasis, and dysfunction at either site as well as perturbation of mitochondria-associated ER membranes (MAMs) have been linked to neurodegenerative and metabolic diseases. Previously, we have observed an increase in ROS and apoptosis levels in patient-derived fibroblasts with remethylation disorders causing homocystinuria. Here we show increased mRNA and protein levels of Herp, Grp78, IP3R1, pPERK, ATF4, CHOP, asparagine synthase and GADD45 in patient-derived fibroblasts suggesting ER stress and calcium perturbations in homocystinuria. In addition, overexpressed MAM-associated proteins (Grp75, σ-1R and Mfn2) were found in these cells that could result in mitochondrial calcium overload and oxidative stress increase. Our results also show an activation of autophagy process and a substantial degradation of altered mitochondria by mitophagy in patient-derived fibroblasts. Moreover, we have observed that autophagy was partially abolished by antioxidants suggesting that ROS participate in this process that may have a protective role. Our findings argue that alterations in Ca2+ homeostasis and autophagy may contribute to the development of this metabolic disorder and suggest a therapeutic potential in homocystinuria for agents that stabilize calcium homeostasis and/or restore the proper function of ER-mitochondria communications.
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Chen F, Wang N, Yang D, Wen X, Mahmoud TN, Zhou D, Tang K, Lin P, Wang A, Jin Y. Herp depletion arrests the S phase of the cell cycle and increases estradiol synthesis in mouse granulosa cells. J Reprod Dev 2016; 62:159-66. [PMID: 26781490 PMCID: PMC4848573 DOI: 10.1262/jrd.2015-120] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The endoplasmic reticulum (ER) stress response has been implicated in the development, atresia and luteinization of ovarian follicles. However, there have been few reports concerning the role of Herp, an ER stress-induced protein, in follicular development. The present study aims to detect the distribution and cyclic variations of Herp during the estrous cycle and to reveal the roles of Herp in regulating the cell cycle, apoptosis and steroid hormone biosynthesis in mouse granulosa cells. In this study, immunohistochemistry staining showed that Herp expression was primarily in the granulosa cells and oocytes. Furthermore, we constructed recombinant lentiviral vectors for Herp short hairpin interfering RNA (shRNA) expression; immunofluorescence staining, real-time quantitative PCR (RT-qPCR) and western blot analysis revealed that Herp was successfully knocked down. Flow cytometry showed that knockdown of Herp arrested granulosa cells at the S phase of the cell cycle. More importantly, ELISA analysis revealed that Herp knockdown significantly upregulated the concentration of estradiol (E2) in the culture supernatants. RT-qPCR was performed to determine the regulatory mechanism of Herp knockdown in the cell cycle, and in steroid synthesis, RT-qPCR analysis revealed that Herp knockdown upregulated the mRNA expression of steroidogenic enzymes (Cyp19a1) and downregulated metabolic enzymes (Cyp1b1) and cell cycle factors (cyclin A1, cyclin B1 and cyclin D2). These results suggest that Herp may regulate the cell cycle and hormone secretions in mouse granulosa cells. The present study helps to elucidate the physiological functions of Herp as they relate to reproduction.
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Affiliation(s)
- Fenglei Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Shaanxi 712100, China
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Paredes F, Parra V, Torrealba N, Navarro-Marquez M, Gatica D, Bravo-Sagua R, Troncoso R, Pennanen C, Quiroga C, Chiong M, Caesar C, Taylor WR, Molgó J, San Martin A, Jaimovich E, Lavandero S. HERPUD1 protects against oxidative stress-induced apoptosis through downregulation of the inositol 1,4,5-trisphosphate receptor. Free Radic Biol Med 2016; 90:206-18. [PMID: 26616647 PMCID: PMC4710961 DOI: 10.1016/j.freeradbiomed.2015.11.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 11/17/2015] [Accepted: 11/20/2015] [Indexed: 11/27/2022]
Abstract
Homocysteine-inducible, endoplasmic reticulum (ER) stress-inducible, ubiquitin-like domain member 1 (HERPUD1), an ER resident protein, is upregulated in response to ER stress and Ca(2+) homeostasis deregulation. HERPUD1 exerts cytoprotective effects in various models, but its role during oxidative insult remains unknown. The aim of this study was to investigate whether HERPUD1 contributes to cytoprotection in response to redox stress and participates in mediating stress-dependent signaling pathways. Our data showed that HERPUD1 protein levels increased in HeLa cells treated for 30 min with H2O2 or angiotensin II and in aortic tissue isolated from mice treated with angiotensin II for 3 weeks. Cell death was higher in HERPUD1 knockdown (sh-HERPUD1) HeLa cells treated with H2O2 in comparison with control (sh-Luc) HeLa cells. This effect was abolished by the intracellular Ca(2+) chelating agent BAPTA-AM or the inositol 1,4,5-trisphosphate receptor (ITPR) antagonist xestospongin B, suggesting that the response to H2O2 was dependent on intracellular Ca(2+) stores and the ITPR. Ca(2+) kinetics showed that sh-HERPUD1 HeLa cells exhibited greater and more sustained cytosolic and mitochondrial Ca(2+) increases than sh-Luc HeLa cells. This higher sensitivity of sh-HERPUD1 HeLa cells to H2O2 was prevented with the mitochondrial permeability transition pore inhibitor cyclosporine A. We concluded that the HERPUD1-mediated cytoprotective effect against oxidative stress depends on the ITPR and Ca(2+) transfer from the ER to mitochondria.
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Affiliation(s)
- Felipe Paredes
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Valentina Parra
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Natalia Torrealba
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Mario Navarro-Marquez
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Damian Gatica
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Roberto Bravo-Sagua
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Rodrigo Troncoso
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile; Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Christian Pennanen
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Clara Quiroga
- ACCDiS, Cardiovascular Diseases Division, Faculty of Medicine, Pontifical Catholic University of Chile, Santiago, Chile
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Christa Caesar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA, USA
| | - W Robert Taylor
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA, USA; Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Jordi Molgó
- Institut des Neurosciences Paris-Saclay, UMR 9197, 91190 Gif sur Yvette, France
| | - Alejandra San Martin
- Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Enrique Jaimovich
- Centro de Estudios Moleculares de la Célula, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile; Centro de Estudios Moleculares de la Célula, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, TX, USA.
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Chen F, Lin P, Wang N, Yang D, Wen X, Zhou D, Wang A, Jin Y. Herp depletion inhibits zearalenone-induced cell death in RAW 264.7 macrophages. Toxicol In Vitro 2015; 32:115-22. [PMID: 26723276 DOI: 10.1016/j.tiv.2015.12.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 11/26/2015] [Accepted: 12/18/2015] [Indexed: 12/14/2022]
Abstract
Herp is an endoplasmic reticulum (ER) membrane protein and strongly induced by the ER stress that not only participates in the unfolded protein response (UPR) under the ER stress, but also in cell autophagy under glucose starvation (GS). However, we do not know whether Herp plays any roles in other responses, such as zearalenone (ZEA). In this study, we constructed recombinant lentiviral vectors for Herp shRNA expression and generated stable Herp knockdown RAW 264.7 macrophages. Flow cytometry analysis showed Herp depletion could inhibit cell death induced by ZEA. Western blot analysis revealed that Herp depletion could up-regulate autophagy-related protein LC3-I conversion into LC3-II and the expression of ER stress-related protein CHOP. These results suggest that Herp depletion inhibits cell death by up-regulating autophagy.
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Affiliation(s)
- Fenglei Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Pengfei Lin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Nan Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Diqi Yang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xin Wen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Dong Zhou
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Arnould T, Michel S, Renard P. Mitochondria Retrograde Signaling and the UPR mt: Where Are We in Mammals? Int J Mol Sci 2015; 16:18224-51. [PMID: 26258774 PMCID: PMC4581242 DOI: 10.3390/ijms160818224] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 06/26/2015] [Accepted: 07/24/2015] [Indexed: 12/17/2022] Open
Abstract
Mitochondrial unfolded protein response is a form of retrograde signaling that contributes to ensuring the maintenance of quality control of mitochondria, allowing functional integrity of the mitochondrial proteome. When misfolded proteins or unassembled complexes accumulate beyond the folding capacity, it leads to alteration of proteostasis, damages, and organelle/cell dysfunction. Extensively studied for the ER, it was recently reported that this kind of signaling for mitochondrion would also be able to communicate with the nucleus in response to impaired proteostasis. The mitochondrial unfolded protein response (UPRmt) is activated in response to different types and levels of stress, especially in conditions where unfolded or misfolded mitochondrial proteins accumulate and aggregate. A specific UPRmt could thus be initiated to boost folding and degradation capacity in response to unfolded and aggregated protein accumulation. Although first described in mammals, the UPRmt was mainly studied in Caenorhabditis elegans, and accumulating evidence suggests that mechanisms triggered in response to a UPRmt might be different in C. elegans and mammals. In this review, we discuss and integrate recent data from the literature to address whether the UPRmt is relevant to mitochondrial homeostasis in mammals and to analyze the putative role of integrated stress response (ISR) activation in response to the inhibition of mtDNA expression and/or accumulation of mitochondrial mis/unfolded proteins.
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Affiliation(s)
- Thierry Arnould
- Laboratory of Biochemistry and Cell Biology (URBC), Namur Research Institute for Life Sciences (NARILIS), University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium.
| | - Sébastien Michel
- Laboratory of Biochemistry and Cell Biology (URBC), Namur Research Institute for Life Sciences (NARILIS), University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium.
- Department of Physiology, University of Lausanne, Rue du Bugnon 7, CH-1005 Lausanne, Switzerland.
| | - Patricia Renard
- Laboratory of Biochemistry and Cell Biology (URBC), Namur Research Institute for Life Sciences (NARILIS), University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium.
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Ho DV, Chan JY. Induction of Herpud1 expression by ER stress is regulated by Nrf1. FEBS Lett 2015; 589:615-20. [PMID: 25637874 PMCID: PMC10084809 DOI: 10.1016/j.febslet.2015.01.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/16/2015] [Accepted: 01/20/2015] [Indexed: 12/30/2022]
Abstract
Herpud1 is an ER-localized protein that contributes to endoplasmic reticulum (ER) homeostasis by participating in the ER-associated protein degradation pathway. The Nrf1 transcription factor is important in cellular stress pathways. We show that loss of Nrf1 function results in decreased Herpud1 expression in cells and liver tissues. Expression of Herpud1 increases in response to ER stress, but not in Nrf1 knockout cells. Transactivation studies show that Nrf1 acts through antioxidant response elements located in the Herpud1 promoter, and chromatin immunoprecipitation demonstrates that Herpud1 is a direct Nrf1 target gene. These results indicate that Nrf1 is a transcriptional activator of Herpud1 expression during ER stress, and they suggest Nrf1 is a key player in the regulation of the ER stress response in cells.
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Affiliation(s)
- Daniel V Ho
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA 92697, USA
| | - Jefferson Y Chan
- Department of Laboratory Medicine and Pathology, University of California, Irvine, D440 Medical Sciences, Irvine, CA 92697, USA.
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Tomioka T, Maruoka H, Kawa H, Yamazoe R, Fujiki D, Shimoke K, Ikeuchi T. The histone deacetylase inhibitor trichostatin A induces neurite outgrowth in PC12 cells via the epigenetically regulated expression of the nur77 gene. Neurosci Res 2014; 88:39-48. [PMID: 25128386 DOI: 10.1016/j.neures.2014.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/12/2014] [Accepted: 07/17/2014] [Indexed: 01/25/2023]
Abstract
Histone deacetylase (HDAC) inhibitors induce histone acetylation and gene expression by changing local chromatin structures. They can thereby influence various cells to proliferate or differentiate. It has been reported that trichostatin A (TSA) or valproic acid (VPA) can induce the neuronal differentiation of mouse embryonic neural stem cells and rat cerebellar granule cells. It is unclear however which gene is responsible for the neuronal differentiation induced by HDAC inhibitors. In this study, we investigated the contribution of immediate early gene (IEG) nur77 to the neuronal differentiation induced by TSA. We report that TSA induces neurite outgrowth in PC12 cells, and C646, an inhibitor of HAT (histone acetyl transferase) (p300), prevents TSA-induced neurite formation. The acetylation of the Lys14 residue of histone H3, and mRNA and protein expression of nur77 gene were found to be stimulated after treatment with TSA, but not in the presence of C646. A knock-down of nur77 inhibits the neurite outgrowth induced by TSA. Furthermore, the ectopic expression of nur77 significantly elicits neurite formation in PC12 cells. These results suggest that the expression of nur77, which is up-regulated via the TSA-induced acetylation of Lys14 on histone H3, is essential for the neuronal differentiation in TSA-induced PC12 cells.
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Affiliation(s)
- Takuma Tomioka
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Hiroki Maruoka
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan; Technical Research Laboratory, Kurabo Industries Ltd., Neyagawa, Osaka 572-0823, Japan
| | - Hiromichi Kawa
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Ryosuke Yamazoe
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Daichi Fujiki
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Koji Shimoke
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Toshihiko Ikeuchi
- Laboratory of Neurobiology, Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering and Strategic Research Base, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan.
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43
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Ying Z, Zhang R, Verge VMK, Misra V. Cloning and characterization of rat Luman/CREB3, a transcription factor highly expressed in nervous system tissue. J Mol Neurosci 2014; 55:347-54. [PMID: 24894591 DOI: 10.1007/s12031-014-0330-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 05/12/2014] [Indexed: 11/24/2022]
Abstract
Human Luman/CREB3 is a basic leucine zipper transcription factor involved in regulation of the unfolded protein response, dendritic cell maturation, and cell migration. But despite reported expression in primary sensory neurons, little is known about its role in the nervous system. To begin investigations into its role in the adult rat nervous system, the rat Luman/CREB3 coding sequence was isolated so its expression within the nervous system could be determined. The rat Luman/CREB3 clone contains a full-length open reading frame encoding 387 amino acids. The recombinant protein generated from this clone activated transcription in a manner equivalent to human Luman/CREB3 from a CAT reporter plasmid construct containing the unfolded protein response element. Quantitative RT-PCR revealed that rat Luman/CREB3 transcripts in a variety of rat tissues with the highest levels in nervous system tissue. In situ hybridization performed on tissue sections confirmed the findings and demonstrated that the Luman/CREB3 mRNA hybridization signal localizes to neurons and satellite glial cells in dorsal root ganglia, the cytoplasm of hepatocytes in liver, and the hippocampal pyramidal cell layers of CA1 and CA3 and the granular cell layer of the dentate gyrus. Collectively, these findings support a role for Luman/CREB3 in the regulation of nervous system function.
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Affiliation(s)
- Zhengxin Ying
- Department of Anatomy and Cell Biology, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada
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Genes and gene networks involved in sodium fluoride-elicited cell death accompanying endoplasmic reticulum stress in oral epithelial cells. Int J Mol Sci 2014; 15:8959-78. [PMID: 24853129 PMCID: PMC4057769 DOI: 10.3390/ijms15058959] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 05/05/2014] [Accepted: 05/13/2014] [Indexed: 11/22/2022] Open
Abstract
Here, to understand the molecular mechanisms underlying cell death induced by sodium fluoride (NaF), we analyzed gene expression patterns in rat oral epithelial ROE2 cells exposed to NaF using global-scale microarrays and bioinformatics tools. A relatively high concentration of NaF (2 mM) induced cell death concomitant with decreases in mitochondrial membrane potential, chromatin condensation and caspase-3 activation. Using 980 probe sets, we identified 432 up-regulated and 548 down-regulated genes, that were differentially expressed by >2.5-fold in the cells treated with 2 mM of NaF and categorized them into 4 groups by K-means clustering. Ingenuity® pathway analysis revealed several gene networks from gene clusters. The gene networks Up-I and Up-II included many up-regulated genes that were mainly associated with the biological function of induction or prevention of cell death, respectively, such as Atf3, Ddit3 and Fos (for Up-I) and Atf4 and Hspa5 (for Up-II). Interestingly, knockdown of Ddit3 and Hspa5 significantly increased and decreased the number of viable cells, respectively. Moreover, several endoplasmic reticulum (ER) stress-related genes including, Ddit3, Atf4 and Hapa5, were observed in these gene networks. These findings will provide further insight into the molecular mechanisms of NaF-induced cell death accompanying ER stress in oral epithelial cells.
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Leitman J, Shenkman M, Gofman Y, Shtern NO, Ben-Tal N, Hendershot LM, Lederkremer GZ. Herp coordinates compartmentalization and recruitment of HRD1 and misfolded proteins for ERAD. Mol Biol Cell 2014; 25:1050-60. [PMID: 24478453 PMCID: PMC3967970 DOI: 10.1091/mbc.e13-06-0350] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The unfolded protein response PERK branch induces recruitment of misfolded proteins and the ubiquitin ligase HRD1 to the ER-derived quality control compartment (ERQC), a staging ground for ER-associated degradation (ERAD). This is accomplished by up-regulation of homocysteine-induced ER protein (Herp), which recruits the ERAD complex at the ERQC. A functional unfolded protein response (UPR) is essential for endoplasmic reticulum (ER)-associated degradation (ERAD) of misfolded secretory proteins, reflecting the fact that some level of UPR activation must exist under normal physiological conditions. A coordinator of the UPR and ERAD processes has long been sought. We previously showed that the PKR-like, ER-localized eukaryotic translation initiation factor 2α kinase branch of the UPR is required for the recruitment of misfolded proteins and the ubiquitin ligase HRD1 to the ER-derived quality control compartment (ERQC), a staging ground for ERAD. Here we show that homocysteine-induced ER protein (Herp), a protein highly upregulated by this UPR branch, is responsible for this compartmentalization. Herp localizes to the ERQC, and our results suggest that it recruits HRD1, which targets to ERAD the substrate presented by the OS-9 lectin at the ERQC. Predicted overall structural similarity of Herp to the ubiquitin-proteasome shuttle hHR23, but including a transmembrane hairpin, suggests that Herp may function as a hub for membrane association of ERAD machinery components, a key organizer of the ERAD complex.
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Affiliation(s)
- Julia Leitman
- Department of Cell Research and Immunology, George Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel Department of Biochemistry and Molecular Biology, George Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel Department of Tumor Cell Biology, St. Jude Children's Research Hospital, Memphis, TN 38105
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Huang CH, Chu YR, Ye Y, Chen X. Role of HERP and a HERP-related protein in HRD1-dependent protein degradation at the endoplasmic reticulum. J Biol Chem 2013; 289:4444-54. [PMID: 24366871 DOI: 10.1074/jbc.m113.519561] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Misfolded proteins of the endoplasmic reticulum (ER) are retrotranslocated to the cytosol and degraded by the proteasome via a process termed ER-associated degradation (ERAD). The precise mechanism of retrotranslocation is unclear. Here, we use several lumenal ERAD substrates targeted for degradation by the ubiquitin ligase HRD1 including SHH (sonic hedgehog) and NHK (null Hong Kong α1-antitrypsin) to study the geometry, organization, and regulation of the HRD1-containing ERAD machinery. We report a new HRD1-associated membrane protein named HERP2, which is homologous to the previously identified HRD1 partner HERP1. Despite sequence homology, HERP2 is constitutively expressed in cells, whereas HERP1 is highly induced by ER stress. We find that these proteins are required for efficient degradation of both glycosylated and nonglycosylated SHH proteins as well as NHK. In cells depleted of HERPs, SHH proteins are largely trapped inside the ER with a fraction of the stabilized SHH protein bound to the HRD1-SEL1L ligase complex. Ubiquitination of SHH is significantly attenuated in the absence of HERPs, suggesting a defect in retrotranslocation. Both HERP proteins interact with HRD1 through a region located in the cytosol. However, unlike its homolog in Saccharomyces cerevisiae, HERPs do not regulate HRD1 stability or oligomerization status. Instead, they help recruit DERL2 to the HRD1-SEL1L complex. Additionally, the UBL domain of HERP1 also seems to have a function independent of DERL2 recruitment in ERAD. Our studies have revealed a critical scaffolding function for mammalian HERP proteins that is required for forming an active retrotranslocation complex containing HRD1, SEL1L, and DERL2.
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Affiliation(s)
- Chih-Hsiang Huang
- From the Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan 35053, China
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47
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Shinozaki S, Chiba T, Kokame K, Miyata T, Kaneko E, Shimokado K. A deficiency of Herp, an endoplasmic reticulum stress protein, suppresses atherosclerosis in ApoE knockout mice by attenuating inflammatory responses. PLoS One 2013; 8:e75249. [PMID: 24204574 PMCID: PMC3810372 DOI: 10.1371/journal.pone.0075249] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 08/13/2013] [Indexed: 01/18/2023] Open
Abstract
Herp was originally identified as an endoplasmic reticulum (ER) stress protein in vascular endothelial cells. ER stress is induced in atherosclerotic lesions, but it is not known whether Herp plays any role in the development of atherosclerosis. To address this question, we generated Herp- and apolipoprotein E (apoE)-deficient mice (Herp(-/-); apoE(-/-) mice) by crossbreeding Herp(-/-) mice and apoE(-/-) mice. Herp was expressed in the endothelial cells and medial smooth muscle cells of the aorta, as well as in a subset of macrophages in the atherosclerotic lesions in apoE(-/-) mice, while there was no expression of Herp in the Herp(-/-); apoE(-/-) mice. The doubly deficient mice developed significantly fewer atherosclerotic lesions than the apoE(-/-) mice at 36 and 72 weeks of age, whereas the plasma levels of cholesterol and triglycerides were not significantly different between the strains. The plasma levels of non-esterified fatty acids were significantly lower in the Herp(-/-); apoE(-/-) mice when they were eight and 16 weeks old. The gene expression levels of ER stress response proteins (GRP78 and CHOP) and inflammatory cytokines (IL-1β, IL-6, TNF-α and MCP-1) in the aorta were significantly lower in Herp(-/-); apoE(-/-) mice than in apoE(-/-) mice, suggesting that Herp mediated ER stress-induced inflammation. In fact, peritoneal macrophages isolated from Herp-deficient mice and RAW264.7 macrophages in which Herp was eliminated with a siRNA expressed lower levels of mRNA for inflammatory cytokines when they were treated with tunicamycin. Herp deficiency affected the major mediators of the unfolded protein response, including IRE1 and PERK, but not ATF6. These findings suggest that a deficiency of Herp suppressed the development of atherosclerosis by attenuating the ER stress-induced inflammatory reactions.
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Affiliation(s)
- Shohei Shinozaki
- Geriatrics and Vascular Medicine, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Tsuyoshi Chiba
- Geriatrics and Vascular Medicine, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
- Information Center, National Institute of Health and Nutrition, Tokyo, Japan
| | - Koichi Kokame
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Toshiyuki Miyata
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Eiji Kaneko
- Geriatrics and Vascular Medicine, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
| | - Kentaro Shimokado
- Geriatrics and Vascular Medicine, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
- * E-mail:
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Quiroga C, Gatica D, Paredes F, Bravo R, Troncoso R, Pedrozo Z, Rodriguez AE, Toro B, Chiong M, Vicencio JM, Hetz C, Lavandero S. Herp depletion protects from protein aggregation by up-regulating autophagy. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:3295-3305. [PMID: 24120520 DOI: 10.1016/j.bbamcr.2013.09.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 08/21/2013] [Accepted: 09/10/2013] [Indexed: 01/04/2023]
Abstract
Herp is an endoplasmic reticulum (ER) stress inducible protein that participates in the ER-associated protein degradation (ERAD) pathway. However, the contribution of Herp to other protein degradation pathways like autophagy and its connection to other types of stress responses remain unknown. Here we report that Herp regulates autophagy to clear poly-ubiquitin (poly-Ub) protein aggregates. Proteasome inhibition and glucose starvation (GS) led to a high level of poly-Ub protein aggregation that was drastically reduced by stably knocking down Herp (shHerp cells). The enhanced removal of poly-Ub inclusions protected cells from death caused by glucose starvation. Under basal conditions and increasingly after stress, higher LC3-II levels and GFP-LC3 puncta were observed in shHerp cells compared to control cells. Herp knockout cells displayed basal up-regulation of two essential autophagy regulators-Atg5 and Beclin-1, leading to increased autophagic flux. Beclin-1 up-regulation was due to a reduction in Hrd1 dependent proteasomal degradation, and not at transcriptional level. The consequent higher autophagic flux was necessary for the clearance of aggregates and for cell survival. We conclude that Herp operates as a relevant factor in the defense against glucose starvation by modulating autophagy levels. These data may have important implications due to the known up-regulation of Herp in pathological states such as brain and heart ischemia, both conditions associated to acute nutritional stress.
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Affiliation(s)
- Clara Quiroga
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile; Harvard School of Public Health, Boston, MA, USA
| | - Damian Gatica
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Felipe Paredes
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Roberto Bravo
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Rodrigo Troncoso
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Zully Pedrozo
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Andrea E Rodriguez
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Barbra Toro
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile
| | - Jose Miguel Vicencio
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile; The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London WC1E 6HX, UK
| | - Claudio Hetz
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile; Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago 8380492, Chile; The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London WC1E 6HX, UK.
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS) & Center for Molecular Studies of the Cell, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380492, Chile; Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, TX, USA.
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Wong N, Morahan G, Stathopoulos M, Proietto J, Andrikopoulos S. A novel mechanism regulating insulin secretion involving Herpud1 in mice. Diabetologia 2013; 56:1569-76. [PMID: 23620059 DOI: 10.1007/s00125-013-2908-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 03/18/2013] [Indexed: 11/24/2022]
Abstract
AIMS/HYPOTHESIS Type 2 diabetes results from beta cell dysfunction after prolonged physiological stress, which causes oversecretion of insulin. We recently found that insulin hypersecretion is mediated by at least two genes. Among mouse models of type 2 diabetes, the DBA/2 mouse strain is more susceptible to diabetes than is the C57BL/6J (B6J) strain. One distinctive feature of the DBA/2 mouse is that it hypersecretes insulin, independent of changes in insulin sensitivity; we identified Nnt as a gene responsible for this trait. METHODS To identify the other gene(s) affecting insulin hypersecretion, we tested a panel of recombinant inbred BXD strains, which have different combinations of B6 and DBA/2 alleles. RESULTS We found that 25% of the BXD strains hypersecreted insulin in response to glucose. Microarray profiling of islets from high- and low-secretor strains showed that at least four genes were differentially expressed. One gene was consistently underexpressed in islets from both DBA/2 and the high-secretor BXD strains. This gene (Herpud1 or Herp) encodes the 54 kDa endoplasmic reticulum stress-inducible protein (HERP) that resides in the integral endoplasmic reticulum membrane. To test directly whether Herpud1 can interact with Nnt, Herpud1 was either knocked down or overexpressed in MIN6 cells. These results showed that when Herpud1 was suppressed, Nnt expression was reduced, while overexpression of Herpud1 led to increased Nnt expression. Furthermore, Herpud1 suppression resulted in significantly decreased glucose-stimulated insulin secretion in the DBA/2 islets but not B6J islets. CONCLUSIONS/INTERPRETATION We conclude that Herpud1 regulates insulin secretion via control of Nnt expression.
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Affiliation(s)
- N Wong
- Department of Medicine (Austin Health), Austin Hospital, University of Melbourne, Heidelberg Heights, Melbourne, Victoria, 3084, Australia.
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50
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Gamma-tocotrienol modulated gene expression in senescent human diploid fibroblasts as revealed by microarray analysis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:454328. [PMID: 23634235 PMCID: PMC3619550 DOI: 10.1155/2013/454328] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 02/13/2013] [Accepted: 02/13/2013] [Indexed: 11/24/2022]
Abstract
The effect of γ-tocotrienol, a vitamin E isomer, in modulating gene expression in cellular aging of human diploid fibroblasts was studied. Senescent cells at passage 30 were incubated with 70 μM of γ-tocotrienol for 24 h. Gene expression patterns were evaluated using Sentrix HumanRef-8 Expression BeadChip from Illumina, analysed using GeneSpring GX10 software, and validated using quantitative RT-PCR. A total of 100 genes were differentially expressed (P < 0.001) by at least 1.5 fold in response to γ-tocotrienol treatment. Amongst the genes were IRAK3, SelS, HSPA5, HERPUD1, DNAJB9, SEPR1, C18orf55, ARF4, RINT1, NXT1, CADPS2, COG6, and GLRX5. Significant gene list was further analysed by Gene Set Enrichment Analysis (GSEA), and the Normalized Enrichment Score (NES) showed that biological processes such as inflammation, protein transport, apoptosis, and cell redox homeostasis were modulated in senescent fibroblasts treated with γ-tocotrienol. These findings revealed that γ-tocotrienol may prevent cellular aging of human diploid fibroblasts by modulating gene expression.
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