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Yuxiong W, Faping L, Bin L, Yanghe Z, Yao L, Yunkuo L, Yishu W, Honglan Z. Regulatory mechanisms of the cAMP-responsive element binding protein 3 (CREB3) family in cancers. Biomed Pharmacother 2023; 166:115335. [PMID: 37595431 DOI: 10.1016/j.biopha.2023.115335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023] Open
Abstract
The CREB3 family of proteins, encompassing CREB3 and its four homologs (CREB3L1, CREB3L2, CREB3L3, and CREB3L4), exerts pivotal control over cellular protein metabolism in response to unfolded protein reactions. Under conditions of endoplasmic reticulum stress, activation of the CREB3 family occurs through regulated intramembrane proteolysis within the endoplasmic reticulum membrane. Perturbations in the function and expression of the CREB3 family have been closely associated with the development of diverse diseases, with a particular emphasis on cancer. Recent investigations have shed light on the indispensable role played by CREB3 family members in modulating the onset and progression of various human cancers. This comprehensive review endeavors to provide an in-depth examination of the involvement of CREB3 family members in distinct human cancer types, accentuating their significance in the pathogenesis of cancer and the manifestation of malignant phenotypes.
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Affiliation(s)
- Wang Yuxiong
- Department of Urology II, The First Hospital of Jilin University, Changchun 130011, China
| | - Li Faping
- Department of Urology II, The First Hospital of Jilin University, Changchun 130011, China
| | - Liu Bin
- Department of Urology II, The First Hospital of Jilin University, Changchun 130011, China
| | - Zhang Yanghe
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun 130011, China
| | - Li Yao
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun 130011, China
| | - Li Yunkuo
- Department of Urology II, The First Hospital of Jilin University, Changchun 130011, China
| | - Wang Yishu
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun 130011, China.
| | - Zhou Honglan
- Department of Urology II, The First Hospital of Jilin University, Changchun 130011, China,.
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2
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Häger SC, Dias C, Sønder SL, Olsen AV, da Piedade I, Heitmann ASB, Papaleo E, Nylandsted J. Short-term transcriptomic response to plasma membrane injury. Sci Rep 2021; 11:19141. [PMID: 34580330 PMCID: PMC8476590 DOI: 10.1038/s41598-021-98420-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 09/06/2021] [Indexed: 12/13/2022] Open
Abstract
Plasma membrane repair mechanisms are activated within seconds post-injury to promote rapid membrane resealing in eukaryotic cells and prevent cell death. However, less is known about the regeneration phase that follows and how cells respond to injury in the short-term. Here, we provide a genome-wide study into the mRNA expression profile of MCF-7 breast cancer cells exposed to injury by digitonin, a mild non-ionic detergent that permeabilizes the plasma membrane. We focused on the early transcriptional signature and found a time-dependent increase in the number of differentially expressed (> twofold, P < 0.05) genes (34, 114 and 236 genes at 20-, 40- and 60-min post-injury, respectively). Pathway analysis highlighted a robust and gradual three-part transcriptional response: (1) prompt activation of immediate-early response genes, (2) activation of specific MAPK cascades and (3) induction of inflammatory and immune pathways. Therefore, plasma membrane injury triggers a rapid and strong stress and immunogenic response. Our meta-analysis suggests that this is a conserved transcriptome response to plasma membrane injury across different cell and injury types. Taken together, our study shows that injury has profound effects on the transcriptome of wounded cells in the regeneration phase (subsequent to membrane resealing), which is likely to influence cellular status and has been previously overlooked.
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Affiliation(s)
- Swantje Christin Häger
- Membrane Integrity, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - Catarina Dias
- Membrane Integrity, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - Stine Lauritzen Sønder
- Membrane Integrity, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - André Vidas Olsen
- Computational Biology Laboratory, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - Isabelle da Piedade
- Computational Biology Laboratory, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - Anne Sofie Busk Heitmann
- Membrane Integrity, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - Elena Papaleo
- Computational Biology Laboratory, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark
- Translational Disease Systems Biology, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Jesper Nylandsted
- Membrane Integrity, Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen, Denmark.
- Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3C, 2200, Copenhagen N, Denmark.
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3
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Fu WK, Cao J, Mi NN, Huang CF, Gao L, Zhang JD, Yue P, Bai B, Lin YY, Meng WB. Cytokines predict virological response in chronic hepatitis B patients receiving peginterferon alfa-2a therapy. World J Clin Cases 2020; 8:2255-2265. [PMID: 32548156 PMCID: PMC7281045 DOI: 10.12998/wjcc.v8.i11.2255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/18/2020] [Accepted: 04/27/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Chronic hepatitis B virus infection remains a major global public health problem. Peginterferon-alpha-2a (PEG-IFN) has direct antiviral and immunoregulatory effects, and it has become one of the first choice drugs for the treatment of chronic hepatitis B (CHB). Cytokines play an important role in immunity, and they directly inhibit viral replication and indirectly determine the predominant pattern of the host immune response.
AIM To determine the correlation between cytokine/chemokine expression levels and response to PEG-IFN treatment in patients with CHB.
METHODS Forty-six kinds of cytokines were analyzed before PEG-IFN therapy and at 24 wk during therapy in 26 CHB patients.
RESULTS The monokine induced by INF-γ (CXCL9) and serum interferon-inducible protein 10 ( IP-10) levels at baseline were higher in virological responders than in non-virological responders (NRs) and decreased during treatment, whereas the NRs did not exhibit significant changes. The macrophage inflammatory protein 1d (MIP-1d) levels at baseline and during treatment were significantly higher in the virological responders than in the NRs, while thymus and activation-regulated chemokine (TARC) levels at baseline and during treatment were significantly lower in the virological responders than in the NRs. The CXCL9, IP-10, MIP-1d, and TARC baseline levels exhibited the expected effects for interferon treatment. The area under the receiver operating characteristic curve values of CXCL9, IP-10, MIP-1d, and TARC for predicting virological responses were 0.787, 0.799, 0.787, and 0.77 (P = 0.01, 0.013, 0.01, and 0.021), respectively.
CONCLUSION We found that cytokine levels before and during treatment may represent potential biomarkers to select CHB patients who can respond to PEG-IFN. Therefore, cytokines can be used as an indicator of antiviral drug selection before CHB treatment.
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Affiliation(s)
- Wen-Kang Fu
- The First Clinical Medical School, Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Jie Cao
- The First Clinical Medical School, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory Department of the First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ning-Ning Mi
- The First Clinical Medical School, Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Chong-Fei Huang
- The First Clinical Medical School, Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Long Gao
- The First Clinical Medical School, Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Jin-Duo Zhang
- Special Minimally Invasive Surgery Department, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ping Yue
- Special Minimally Invasive Surgery Department, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Bing Bai
- Special Minimally Invasive Surgery Department, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yan-Yan Lin
- Special Minimally Invasive Surgery Department, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Wen-Bo Meng
- The First Clinical Medical School, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Special Minimally Invasive Surgery Department, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Institute of Genetics, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Institute of Hepatopancreatobiliary of Gansu Province, Lanzhou 730000, Gansu Province, Chinao
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou 730000, Gansu Province, China
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4
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Wang L, Lu M, Zhang R, Guo W, Lin P, Yang D, Chen H, Tang K, Zhou D, Wang A, Jin Y. Inhibition of Luman/CREB3 expression leads to the upregulation of testosterone synthesis in mouse Leydig cells. J Cell Physiol 2019; 234:15257-15269. [PMID: 30673139 DOI: 10.1002/jcp.28171] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
Luman, also known as cAMP-response element-binding protein 3, is an endoplasmic reticulum stress-related protein that has been identified as a novel transcriptional coregulator of a variety of nuclear receptors. Herein, immunohistochemistry results showed that Luman was specifically expressed in mouse Leydig cells in an age-dependent increase manner, from prepuberty to sexual maturation. Luman was not detected in Sertoli cells within the seminiferous tubules at any developmental period. The immunofluorescent experiment indicated that Luman was mainly located within the cytoplasm of murine Leydig tumor cells (MLTC-1) and primary Leydig cells (PLCs). To investigate the physiological function of Luman, experiments were conducted to examine the consequences of short hairpin RNA- and small interfering RNA-mediated Luman knock-down in MLTC-1 and PLCs, respectively. Luman knock-down significantly upregulated the expression of steroidogenic acute regulatory, cytochrome P450 cholesterol side-chain cleavage enzymes, 3β-hydroxysteroid dehydrogenase, and 17-α-hydroxylase/C17-20 lyase in MLTC-1 cells and PLCs. Luman knock-down caused an increase in human chorionic gonadotropin-stimulated testosterone production in vitro and in vivo. The nuclear receptors SF-1 and Nur-77 were significantly increased upon Luman knock-down in MLTC-1. By contrast, the level of the nuclear receptor SHP decreased. Luciferase reporter assay results demonstrated that Luman knock-down upregulated the activity of SF-1 and Nur-77 promoters. These data suggested that Luman expressed in mouse Leydig cells in an age-dependent increase manner. Luman knock-down upregulated the activity of SF-1 and Nur-77 promoters, which lead to the increase of testosterone synthesis and steroidogenesis genes expression. In conclusion, these findings provide us with new insights into the role Luman played in male reproduction.
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Affiliation(s)
- Lei Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Minjie Lu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Ruixue Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Wenwen Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Pengfei Lin
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Diqi Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Huatao Chen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Keqiong Tang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Dong Zhou
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Aihua Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China.,Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yaping Jin
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
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5
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Sampieri L, Di Giusto P, Alvarez C. CREB3 Transcription Factors: ER-Golgi Stress Transducers as Hubs for Cellular Homeostasis. Front Cell Dev Biol 2019; 7:123. [PMID: 31334233 PMCID: PMC6616197 DOI: 10.3389/fcell.2019.00123] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 06/17/2019] [Indexed: 12/21/2022] Open
Abstract
CREB3 family of transcription factors are ER localized proteins that belong to the bZIP family. They are transported from the ER to the Golgi, cleaved by S1P and S2P proteases and the released N-terminal domains act as transcription factors. CREB3 family members regulate the expression of a large variety of genes and according to their tissue-specific expression profiles they play, among others, roles in acute phase response, lipid metabolism, development, survival, differentiation, organelle autoregulation, and protein secretion. They have been implicated in the ER and Golgi stress responses as regulators of the cell secretory capacity and cell specific cargos. In this review we provide an overview of the diverse functions of each member of the family (CREB3, CREB3L1, CREB3L2, CREB3L3, CREB3L4) with special focus on their role in the central nervous system.
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Affiliation(s)
- Luciana Sampieri
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Córdoba, Argentina.,Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Pablo Di Giusto
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Córdoba, Argentina.,Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Cecilia Alvarez
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Córdoba, Argentina.,Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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6
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Sabaratnam K, Renner M, Paesen G, Harlos K, Nair V, Owens RJ, Grimes JM. Insights from the crystal structure of the chicken CREB3 bZIP suggest that members of the CREB3 subfamily transcription factors may be activated in response to oxidative stress. Protein Sci 2019; 28:779-787. [PMID: 30653278 PMCID: PMC6423718 DOI: 10.1002/pro.3573] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/14/2019] [Indexed: 12/23/2022]
Abstract
cAMP response element binding Protein 3 (CREB3) is an endoplasmic reticulum (ER) membrane‐bound transcription factor, which belongs to the basic leucine zipper (bZIP) superfamily of eukaryotic transcription factors. CREB3 plays a role in the ER‐stress induced unfolded protein response (UPR) and is a multifunctional cellular factor implicated in a number of biological processes including cell proliferation and migration, tumor suppression, and immune‐related gene expression. To gain structural insights into the transcription factor, we determined the crystal structure of the conserved bZIP domain of chicken CREB3 (chCREB3) to a resolution of 3.95 Å. The X‐ray structure provides evidence that chCREB3 can form a stable homodimer. The chCREB3 bZIP has a structured, pre‐formed DNA binding region, even in the absence of DNA, a feature that could potentially enhance both the DNA binding specificity and affinity of chCREB3. Significantly, the homodimeric bZIP possesses an intermolecular disulfide bond that connects equivalent cysteine residues of the parallel helices in the leucine zipper region. This disulfide bond in the hydrophobic core of the bZIP may increase the stability of the homodimer under oxidizing conditions. Moreover, sequence alignment of bZIP sequences from chicken, human, and mouse reveals that only members of the CREB3 subfamily contain this cysteine residue, indicating that it could act as a redox‐sensor. Taken together, these results suggest that the activity of these transcription factors may be redox‐regulated and they may be activated in response to oxidative stress. PDB Code(s): 6IAK
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Affiliation(s)
- Keshalini Sabaratnam
- Division of Structural Biology, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom.,The Pirbright Institute, Woking, Guildford, Surrey, GU24 0NF, United Kingdom
| | - Max Renner
- Division of Structural Biology, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - Guido Paesen
- Division of Structural Biology, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - Karl Harlos
- Division of Structural Biology, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom
| | - Venugopal Nair
- The Pirbright Institute, Woking, Guildford, Surrey, GU24 0NF, United Kingdom
| | - Raymond J Owens
- Division of Structural Biology, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom.,The Research Complex at Harwell, Oxfordshire, OX11 0FA, United Kingdom
| | - Jonathan M Grimes
- Division of Structural Biology, University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, United Kingdom.,Diamond Light Source Limited, Oxfordshire, OX11 0DE, United Kingdom
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7
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Riddy DM, Goy E, Delerive P, Summers RJ, Sexton PM, Langmead CJ. Comparative genotypic and phenotypic analysis of human peripheral blood monocytes and surrogate monocyte-like cell lines commonly used in metabolic disease research. PLoS One 2018; 13:e0197177. [PMID: 29746559 PMCID: PMC5944989 DOI: 10.1371/journal.pone.0197177] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 04/27/2018] [Indexed: 12/13/2022] Open
Abstract
Monocyte-like cell lines (MCLCs), including THP-1, HL-60 and U-937 cells, are used routinely as surrogates for isolated human peripheral blood mononuclear cells (PBMCs). To systematically evaluate these immortalised cells and PBMCs as model systems to study inflammation relevant to the pathogenesis of type II diabetes and immuno-metabolism, we compared mRNA expression of inflammation-relevant genes, cell surface expression of cluster of differentiation (CD) markers, and chemotactic responses to inflammatory stimuli. Messenger RNA expression analysis suggested most genes were present at similar levels across all undifferentiated cells, though notably, IDO1, which encodes for indoleamine 2,3-dioxygenase and catabolises tryptophan to kynureninase (shown to be elevated in serum from diabetic patients), was not expressed in any PMA-treated MCLC, but present in GM-CSF-treated PBMCs. There was little overall difference in the pattern of expression of CD markers across all cells, though absolute expression levels varied considerably and the correlation between MCLCs and PBMCs was improved upon MCLC differentiation. Functionally, THP-1 and PBMCs migrated in response to chemoattractants in a transwell assay, with varying sensitivity to MCP-1, MIP-1α and LTB-4. However, despite similar gene and CD expression profiles, U-937 cells were functionally impaired as no migration was observed to any chemoattractant. Our analysis reveals that the MCLCs examined only partly replicate the genotypic and phenotypic properties of human PBMCs. To overcome such issues a universal differentiation protocol should be implemented for these cell lines, similar to those already used with isolated monocytes. Although not perfect, in our hands the THP-1 cells represent the closest, simplified surrogate model of PBMCs for study of inflammatory cell migration.
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Affiliation(s)
- Darren M. Riddy
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Emily Goy
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Philippe Delerive
- Institut de Recherches Servier, Pôle d’Innovation Thérapeutique Métabolisme, Suresnes, France (PD)
| | - Roger J. Summers
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Patrick M. Sexton
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Christopher J. Langmead
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- * E-mail:
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8
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Zhao F, Wang N, Yi Y, Lin P, Tang K, Wang A, Jin Y. Knockdown of CREB3/Luman by shRNA in Mouse Granulosa Cells Results in Decreased Estradiol and Progesterone Synthesis and Promotes Cell Proliferation. PLoS One 2016; 11:e0168246. [PMID: 27973579 PMCID: PMC5156397 DOI: 10.1371/journal.pone.0168246] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/28/2016] [Indexed: 11/30/2022] Open
Abstract
Luman (also known as LZIP or CREB3) is a transcription factor and a member of the cAMP responsive element-binding (CREB) family proteins. Although Luman has been detected in apoptotic granulosa cells and disorganized atretic bodies, the physiological function of Luman in follicular development has not been reported. Our objective is to determine the role of Luman in folliculogenesis by knocking down Luman expression in mouse GCs (granulosa cells) using shRNA. Luman expression was successfully knocked down in mouse GCs at the mRNA and protein level, as confirmed by real-time quantitative PCR, western blot and immunofluorescence staining, respectively. Knockdown of Luman significantly decreased the concentrations of estradiol (E2) and progesterone (P4) in cell culture medium. Furthermore, Luman knockdown promoted cell proliferation but had no effect on cell apoptosis. To elucidate the regulatory mechanism underlying the effects of Luman knockdown on steroid synthesis and cell cycle, we measured the mRNA and protein expression levels of several related genes. The expression of Star, Cyp19a1, and Cyp1b1, which encode steroidogenic enzymes, was down-regulated, while that of Cyp11a1 and Runx2, which also encode steroidogenic enzymes, was up-regulated. The expression of the cell cycle factors Cyclin A1, Cyclin B1, Cyclin D2, and Cyclin E was significantly up-regulated. Among apoptosis-related genes, only Bcl-2 was down-regulated, while Caspase 3, Bax and p53 were not significantly affected, suggesting that Luman knockdown may regulate cell cycle activity and hormone secretion at the transcriptional and translational level in mouse GCs. The expression of two important genes associated with folliculogenesis in mouse GCs, Has2 and Ptgs2, were also significantly altered by Luman knockdown. In conclusion, the findings of this study indicate that Luman regulates mouse GCs modulation of steroid synthesis, cell cycle activity and other regulators of folliculogenesis.
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Affiliation(s)
- Fan Zhao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Nan Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanglei Yi
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Pengfei Lin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Keqiong Tang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
- * E-mail:
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9
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Kim J, Ko J. Human sLZIP promotes atherosclerosis via MMP-9 transcription and vascular smooth muscle cell migration. FASEB J 2014; 28:5010-21. [PMID: 25077563 DOI: 10.1096/fj.14-259218] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Atherosclerosis is a chronic inflammatory response of the vascular wall, and immune responses are involved in every phase of atherosclerosis, from initiation, to progression, and finally to plaque rupture. Cytokines are the major atherogenic mediators that promote plaque formation and progression by activation of inflammatory cells. They induce expressions of matrix metalloproteinases (MMPs), leading to vascular smooth muscle cell (VSMC) migration in atherosclerotic lesions. Although chronic inflammatory mediators, including tumor necrosis factor α (TNF-α) and MMPs, exacerbate atherosclerosis, the molecular mechanism of atherogenesis remains unclear. In this study we investigated the role of a novel transcription factor the human small leucine zipper protein (sLZIP) in TNF-α-induced MMP expression, VSMC migration, and atherosclerosis progression. The proinflammatory cytokine TNF-α enhanced sLZIP expression by 3-fold via activation of NF-κB signaling. sLZIP induced MMP-9 transcription and the proteolytic activity of MMP-9 by 2.8- and 3.2-fold (P< 0.05), respectively, in macrophages, leading to enhancement of VSMC migration by 2.7-fold (P<0.005). sLZIP(OE/+) (sLZIP transgenic); LDLR(-/-) mice fed a high-cholesterol diet exhibited enhanced arterial plaque formation and increased VSMC migration from the media into the intima by 2.8- and 2.6-fold (P<0.01), respectively, compared with atherosclerosis-prone LDLR(-/-) mice. These results indicate that human sLZIP plays a critical role in development of atherosclerosis and can be used as a therapeutic target molecule for treatment of atherosclerosis.
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Affiliation(s)
- Jeonghan Kim
- Division of Life Sciences, Korea University, Seoul, South Korea
| | - Jesang Ko
- Division of Life Sciences, Korea University, Seoul, South Korea
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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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Yang Y, Jin Y, Martyn AC, Lin P, Song Y, Chen F, Hu L, Cui C, Li X, Li Q, Lu R, Wang A. Expression pattern implicates a potential role for luman recruitment factor in the process of implantation in uteri and development of preimplantation embryos in mice. J Reprod Dev 2013; 59:245-51. [PMID: 23400243 PMCID: PMC3934142 DOI: 10.1262/jrd.2012-137] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Luman/CREB3 recruitment factor (LRF or CREBRF) was identified as a regulator of Luman
(or CREB3) that is involved in the unfolded protein response during endoplasmic reticulum
stress. Luman is implicated in a multitude of functions ranging from viral infection and
immunity to cancer. The biological function of LRF, however, is unknown. In this paper, we
report that uteri of pregnant mice and embryos displayed enhanced LRF expression at all
stages, and the expressed LRF was found to be localized specifically at implantation
sites. On the other hand, uteri of mice induced for delayed implantation or pseudopregnant
mice showed low levels of LRF expression, suggesting that LRF mediates uterine receptivity
during implantation. Further, expression of LRF was found to be modulated by steroid
hormones such as progesterone and estradiol. This study thereby identifies a potential
role for LRF in the process of implantation in uteri and development of preimplantation
embryos in mice.
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Affiliation(s)
- Yanzhou Yang
- Key Open Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling Shaanxi 712100, PR China
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Kim HC, Choi KC, Choi HK, Kang HB, Kim MJ, Lee YH, Lee OH, Lee J, Kim YJ, Jun W, Jeong JW, Yoon HG. HDAC3 selectively represses CREB3-mediated transcription and migration of metastatic breast cancer cells. Cell Mol Life Sci 2010; 67:3499-510. [PMID: 20473547 PMCID: PMC11115716 DOI: 10.1007/s00018-010-0388-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 04/19/2010] [Accepted: 04/23/2010] [Indexed: 12/19/2022]
Abstract
We identified CREB3 as a novel HDAC3-interacting protein in a yeast two-hybrid screen for HDAC3-interacting proteins. Among all class I HDACs, CREB3 specifically interacts with HDAC3, in vitro and in vivo. HDAC3 efficiently inhibited CREB3-enhanced NF-κB activation, whereas the other class I HDACs did not alter NF-κB-dependent promoter activities or the expression of NF-κB target genes. Importantly, both knock-down of CREB3 and overexpression of HDAC3 suppressed the transcriptional activation of the novel CREB3-regulated gene, CXCR4. Furthermore, CREB3 was shown to bind to the CRE element in the CXCR4 promoter and to activate the transcription of the CXCR4 gene by causing dissociation of HDAC3 and subsequently increasing histone acetylation. Importantly, both the depletion of HDAC3 and the overexpression of CREB3 substantially increased the migration of MDA-MB-231 metastatic breast cancer cells. Taken together, these findings suggest that HDAC3 selectively represses CREB3-mediated transcriptional activation and chemotactic signalling in human metastatic breast cancer cells.
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Affiliation(s)
- Han-Cheon Kim
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung-Chul Choi
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hyo-Kyoung Choi
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hee-Bum Kang
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Mi-Jeong Kim
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Yoo-Hyun Lee
- Department of Food and Nutrition, The University of Suwon, Suwon, Korea
| | - Ok-Hee Lee
- Severance Hospital Integrative Research Institute for Cerebral and Cardiovascular Disease, Yonsei University Health System, Seoul, Korea
| | - Jeongmin Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin-si, Kyunggi-do 446-701 South Korea
| | - Young Jun Kim
- Department of Food and Biotechnology, Korea University, Jochiwon-eup, Yeongi-gun, Chungnam Korea
| | - Woojin Jun
- Department of Food and Nutrition, Chonnam National University, Gwangju, Korea
| | - Jae-Wook Jeong
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030 USA
| | - Ho-Geun Yoon
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
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Kang H, Kim YS, Ko J. A novel isoform of human LZIP negatively regulates the transactivation of the glucocorticoid receptor. Mol Endocrinol 2009; 23:1746-57. [PMID: 19779205 DOI: 10.1210/me.2009-0009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The human leucine zipper protein (LZIP) is a basic leucine zipper transcription factor that is involved in leukocyte migration, tumor suppression, and endoplasmic reticulum stress-associated protein degradation. Although evidence suggests a diversity of roles for LZIP, its function is not fully understood, and the subcellular localization of LZIP is still controversial. We identified a novel isoform of LZIP and characterized its function in ligand-induced transactivation of the glucocorticoid receptor (GR) in COS-7 and HeLa cells. A novel isoform of human LZIP designated as "sLZIP" contains a deleted putative transmembrane domain (amino acids 229-245) of LZIP and consists of 345 amino acids. LZIP and sLZIP were ubiquitously expressed in a variety of cell lines and tissues, with LZIP being much more common. sLZIP was mainly localized in the nucleus, whereas LZIP was located in the cytoplasm. Unlike LZIP, sLZIP was not involved in the chemokine-mediated signal pathway. sLZIP recruited histone deacetylases (HDACs) to the promoter region of the mouse mammary tumor virus luciferase reporter gene and enhanced the activities of HDACs, resulting in suppression of expression of the GR target genes. Our findings suggest that sLZIP functions as a negative regulator in glucocorticoid-induced transcriptional activation of GR by recruitment and activation of HDACs.
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Affiliation(s)
- Hyereen Kang
- School of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Seongbuk-gu, Seoul 136-701, Korea
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