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Furukawa T, Mimami K, Nagata T, Yamamoto M, Sato M, Tanimoto A. Approach to Functions of BHLHE41/DEC2 in Non-Small Lung Cancer Development. Int J Mol Sci 2023; 24:11731. [PMID: 37511489 PMCID: PMC10380948 DOI: 10.3390/ijms241411731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
The circadian rhythm-related genes BHLHE40/DEC1 and BHLHE41/DEC2 have various functions under different cell and tissue conditions. BHLHE41/DEC2 has been reported to be both a cancer-suppressive and an oncogenic gene during cancer development. The effects of BHLHE41/DEC2 on differentiation have been examined using Bhlhe41/Dec2 knockout mice and/or in vitro differentiation models, and research has been conducted using genetic analysis of tumor cells, in vitro analysis of cancer cell lines, and immunohistochemical studies of the clinical samples. We summarize some of these studies, detail several problems, and consider possible reasons for contradictory results and the needs for further research.
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Affiliation(s)
- Tatsuhiko Furukawa
- Department of Pathology, Graduate School Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Kentaro Mimami
- Department of Pharmacy, University of Miyazaki Hospital, 5200 Kihara Kiyotake cho, Miyazaki 889-1692, Japan
| | - Toshiyuki Nagata
- Department of General Thoracic Surgery, Graduate School Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Masatasu Yamamoto
- Department of Molecular Oncology, Graduate School Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Masami Sato
- Department of General Thoracic Surgery, Graduate School Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Akihide Tanimoto
- Department of Pathology, Graduate School Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
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2
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Li S, Ni Y, Li C, Xiang Q, Zhao Y, Xu H, Huang W, Wang Y, Wang Y, Zhan J, Liu Y. Long noncoding RNA SNHG1 alleviates high glucose-induced vascular smooth muscle cells calcification/senescence by post-transcriptionally regulating Bhlhe40 and autophagy via Atg10. J Physiol Biochem 2023; 79:83-105. [PMID: 36194366 PMCID: PMC9905201 DOI: 10.1007/s13105-022-00924-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 09/07/2022] [Indexed: 11/26/2022]
Abstract
Long noncoding RNAs (lncRNAs) are emerging regulators of vascular diseases, yet their role in diabetic vascular calcification/aging remains poorly understood. In this study, we identified a down-expressed lncRNA SNHG1 in high glucose (HG)-induced vascular smooth muscle cells (HA-VSMCs), which induced excessive autophagy and promoted HA-VSMCs calcification/senescence. Overexpression of SNHG1 alleviated HG-induced HA-VSMCs calcification/senescence. The molecular mechanisms of SNHG1 in HA-VSMCs calcification/senescence were explored by RNA pull-down, RNA immunoprecipitation, RNA stability assay, luciferase reporter assay, immunoprecipitation and Western blot assays. In one mechanism, SNHG1 directly interacted with Bhlhe40 mRNA 3'-untranslated region and increased Bhlhe40 mRNA stability and expression. In another mechanism, SNHG1 enhanced Bhlhe40 protein SUMOylation by serving as a scaffold to facilitate the binding of SUMO E3 ligase PIAS3 and Bhlhe40 protein, resulting in increased nuclear translocation of Bhlhe40 protein. Moreover, Bhlhe40 suppressed the expression of Atg10, which is involved in the process of autophagosome formation. Collectively, the protective effect of SNHG1 on HG-induced HA-VSMCs calcification/senescence is accomplished by stabilizing Bhlhe40 mRNA and promoting the nuclear translocation of Bhlhe40 protein. Our study could provide a novel approach for diabetic vascular calcification/aging.
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Affiliation(s)
- Shuang Li
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yuqing Ni
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Chen Li
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Qunyan Xiang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yan Zhao
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Hui Xu
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Wu Huang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yanjiao Wang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yi Wang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Junkun Zhan
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China.
| | - Youshuo Liu
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China.
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3
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Mo X, Liu F, Xing C, Shan M, Yao B, Sun Q, Zou Y, Zhang K, Tan J, Sun S, Ren Y. Age‐related SUMOylation of PLK1 is essential to meiosis progression in mouse oocytes. J Cell Physiol 2022; 237:4580-4590. [DOI: 10.1002/jcp.30910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/09/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Xiao‐Long Mo
- Department of Histology and Embryology, School of Basic Medicine Zunyi Medical University Zunyi Guizhou China
| | - Feng Liu
- Department of Histology and Embryology, School of Basic Medicine Zunyi Medical University Zunyi Guizhou China
| | - Chun‐Hua Xing
- College of Animal Science and Technology Nanjing Agricultural University Nanjing Jiangsu China
| | - Meng‐Meng Shan
- College of Animal Science and Technology Nanjing Agricultural University Nanjing Jiangsu China
| | - Bo Yao
- Department of Histology and Embryology, School of Basic Medicine Zunyi Medical University Zunyi Guizhou China
| | - Qi‐Qi Sun
- Department of Histology and Embryology, School of Basic Medicine Zunyi Medical University Zunyi Guizhou China
| | - Yuan‐Jing Zou
- College of Animal Science and Technology Nanjing Agricultural University Nanjing Jiangsu China
| | - Kun‐Huan Zhang
- College of Animal Science and Technology Nanjing Agricultural University Nanjing Jiangsu China
| | - Jun Tan
- Department of Histology and Embryology, School of Basic Medicine Zunyi Medical University Zunyi Guizhou China
| | - Shao‐Chen Sun
- College of Animal Science and Technology Nanjing Agricultural University Nanjing Jiangsu China
| | - Yan‐Ping Ren
- Department of Histology and Embryology, School of Basic Medicine Zunyi Medical University Zunyi Guizhou China
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4
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Yang N, Das D, Shankar SR, Goy PA, Guccione E, Taneja R. An interplay between BRD4 and G9a regulates skeletal myogenesis. Front Cell Dev Biol 2022; 10:978931. [PMID: 36158208 PMCID: PMC9489841 DOI: 10.3389/fcell.2022.978931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Histone acetylation and methylation are epigenetic modifications that are dynamically regulated by chromatin modifiers to precisely regulate gene expression. However, the interplay by which histone modifications are synchronized to coordinate cellular differentiation is not fully understood. In this study, we demonstrate a relationship between BRD4, a reader of acetylation marks, and G9a, a writer of methylation marks in the regulation of myogenic differentiation. Using loss- and gain-of-function studies, as well as a pharmacological inhibition of its activity, we examined the mechanism by which BRD4 regulates myogenesis. Transcriptomic analysis using RNA sequencing revealed that a number of myogenic differentiation genes are downregulated in Brd4-depleted cells. Interestingly, some of these genes were upregulated upon G9a knockdown, indicating that BRD4 and G9a play opposing roles in the control of myogenic gene expression. Remarkably, the differentiation defect caused by Brd4 knockdown was rescued by inhibition of G9a methyltransferase activity. These findings demonstrate that the absence of BRD4 results in the upregulation of G9a activity and consequently impaired myogenic differentiation. Collectively, our study identifies an interdependence between BRD4 and G9a for the precise control of transcriptional outputs to regulate myogenesis.
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Affiliation(s)
- Naidi Yang
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, China
| | - Dipanwita Das
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Shilpa Rani Shankar
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Pierre-Alexis Goy
- Methyltransferases in Development and Disease Group, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Ernesto Guccione
- Methyltransferases in Development and Disease Group, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Reshma Taneja
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- *Correspondence: Reshma Taneja,
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5
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Bromelain mediates apoptosis in HeLa cells via ROS-independent pathway. ADVANCES IN TRADITIONAL MEDICINE 2022. [DOI: 10.1007/s13596-022-00638-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Kunz K, Wagner K, Mendler L, Hölper S, Dehne N, Müller S. SUMO Signaling by Hypoxic Inactivation of SUMO-Specific Isopeptidases. Cell Rep 2017; 16:3075-3086. [PMID: 27626674 DOI: 10.1016/j.celrep.2016.08.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 07/13/2016] [Accepted: 08/09/2016] [Indexed: 11/24/2022] Open
Abstract
Post-translational modification of proteins with ubiquitin-like SUMO modifiers is a tightly regulated and highly dynamic process. The SENP family of SUMO-specific isopeptidases comprises six cysteine proteases. They are instrumental in counterbalancing SUMO conjugation, but their regulation is not well understood. We demonstrate that in hypoxic cell extracts, the catalytic activity of SENP family members, in particular SENP1 and SENP3, is inhibited in a rapid and fully reversible process. Comparative mass spectrometry from normoxic and hypoxic cells defines a subset of hypoxia-induced SUMO1 targets, including SUMO ligases RanBP2 and PIAS2, glucose transporter 1, and transcriptional regulators. Among the most strongly induced targets, we identified the transcriptional co-repressor BHLHE40, which controls hypoxic gene expression programs. We provide evidence that SUMOylation of BHLHE40 is reversed by SENP1 and contributes to transcriptional repression of the metabolic master regulator gene PGC-1α. We propose a pathway that connects oxygen-controlled SENP activity to hypoxic reprogramming of metabolism.
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Affiliation(s)
- Kathrin Kunz
- Institute of Biochemistry II, Goethe University, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Kristina Wagner
- Institute of Biochemistry II, Goethe University, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Luca Mendler
- Institute of Biochemistry II, Goethe University, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Soraya Hölper
- Institute of Biochemistry II, Goethe University, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Nathalie Dehne
- Institute of Biochemistry I, Goethe University, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Stefan Müller
- Institute of Biochemistry II, Goethe University, Medical School, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany.
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7
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Bakker E, Tian K, Mutti L, Demonacos C, Schwartz JM, Krstic-Demonacos M. Insight into glucocorticoid receptor signalling through interactome model analysis. PLoS Comput Biol 2017; 13:e1005825. [PMID: 29107989 PMCID: PMC5690696 DOI: 10.1371/journal.pcbi.1005825] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 11/16/2017] [Accepted: 10/16/2017] [Indexed: 12/27/2022] Open
Abstract
Glucocorticoid hormones (GCs) are used to treat a variety of diseases because of their potent anti-inflammatory effect and their ability to induce apoptosis in lymphoid malignancies through the glucocorticoid receptor (GR). Despite ongoing research, high glucocorticoid efficacy and widespread usage in medicine, resistance, disease relapse and toxicity remain factors that need addressing. Understanding the mechanisms of glucocorticoid signalling and how resistance may arise is highly important towards improving therapy. To gain insight into this we undertook a systems biology approach, aiming to generate a Boolean model of the glucocorticoid receptor protein interaction network that encapsulates functional relationships between the GR, its target genes or genes that target GR, and the interactions between the genes that interact with the GR. This model named GEB052 consists of 52 nodes representing genes or proteins, the model input (GC) and model outputs (cell death and inflammation), connected by 241 logical interactions of activation or inhibition. 323 changes in the relationships between model constituents following in silico knockouts were uncovered, and steady-state analysis followed by cell-based microarray genome-wide model validation led to an average of 57% correct predictions, which was taken further by assessment of model predictions against patient microarray data. Lastly, semi-quantitative model analysis via microarray data superimposed onto the model with a score flow algorithm has also been performed, which demonstrated significantly higher correct prediction ratios (average of 80%), and the model has been assessed as a predictive clinical tool using published patient microarray data. In summary we present an in silico simulation of the glucocorticoid receptor interaction network, linked to downstream biological processes that can be analysed to uncover relationships between GR and its interactants. Ultimately the model provides a platform for future development both by directing laboratory research and allowing for incorporation of further components, encapsulating more interactions/genes involved in glucocorticoid receptor signalling. Here we present modelling of the glucocorticoid receptor (GR) signalling network. The GR is the effector for a class of drugs known as corticosteroids, which are widely used in medicine for their anti-inflammatory effects and ability to induce apoptosis in leukaemic cells. However, side effects, treatment-related toxicity and glucocorticoid resistance remain and therefore increased understanding of the glucocorticoid receptor mechanism of action may improve therapeutic outcomes. The GEB052 model presented herein has been used to generate predictions for how the network is altered between glucocorticoid-sensitive and glucocorticoid-resistant scenarios, and these predictions have been verified using published gene expression data from established cell lines (for both qualitative and semi-quantitative analysis). The model has also been preliminarily assessed as a predictive clinical tool by correlating model predictions with clinical outcomes of thirteen leukaemia patients. Thus, the GEB052 model demonstrates successful modelling to understand GR function. GEB052 provides accurate predictions and has indicated potential routes through which glucocorticoid resistance may arise. The work presented herein thus demonstrates a proof-of-principle of this modelling approach to furthering GR research, and provides insight into potential mechanisms of corticosteroids resistance.
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Affiliation(s)
- Emyr Bakker
- Biomedical Research Centre, School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
| | - Kun Tian
- Biomedical Research Centre, School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
| | - Luciano Mutti
- Biomedical Research Centre, School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
| | - Constantinos Demonacos
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Jean-Marc Schwartz
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- * E-mail: (JMS); (MKD)
| | - Marija Krstic-Demonacos
- Biomedical Research Centre, School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
- * E-mail: (JMS); (MKD)
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8
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Sultan A, Parganiha A, Sultan T, Choudhary V, Pati AK. Circadian clock, cell cycle, and breast cancer: an updated review. BIOL RHYTHM RES 2016. [DOI: 10.1080/09291016.2016.1263011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Armiya Sultan
- Chronobiology and Animal Behaviour Laboratory, School of Life Sciences, Pt. Ravishankar Shukla University, Raipur, India
| | - Arti Parganiha
- Chronobiology and Animal Behaviour Laboratory, School of Life Sciences, Pt. Ravishankar Shukla University, Raipur, India
- Center for Translational Chronobiology, Pt. Ravishankar Shukla University, Raipur, India
| | - Tahira Sultan
- Department of Biochemistry, University of Kashmir, Srinagar, India
| | - Vivek Choudhary
- Regional Cancer Centre, Pt. J.N.M. Medical College, Dr. B.R. Ambedkar Memorial Hospital, Raipur, India
| | - Atanu Kumar Pati
- Chronobiology and Animal Behaviour Laboratory, School of Life Sciences, Pt. Ravishankar Shukla University, Raipur, India
- Center for Translational Chronobiology, Pt. Ravishankar Shukla University, Raipur, India
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9
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An Integrative Analysis of Preeclampsia Based on the Construction of an Extended Composite Network Featuring Protein-Protein Physical Interactions and Transcriptional Relationships. PLoS One 2016; 11:e0165849. [PMID: 27802351 PMCID: PMC5089765 DOI: 10.1371/journal.pone.0165849] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/18/2016] [Indexed: 11/19/2022] Open
Abstract
Preeclampsia (PE) is a pregnancy disorder defined by hypertension and proteinuria. This disease remains a major cause of maternal and fetal morbidity and mortality. Defective placentation is generally described as being at the root of the disease. The characterization of the transcriptome signature of the preeclamptic placenta has allowed to identify differentially expressed genes (DEGs). However, we still lack a detailed knowledge on how these DEGs impact the function of the placenta. The tools of network biology offer a methodology to explore complex diseases at a systems level. In this study we performed a cross-platform meta-analysis of seven publically available gene expression datasets comparing non-pathological and preeclamptic placentas. Using the rank product algorithm we identified a total of 369 DEGs consistently modified in PE. The DEGs were used as seeds to build both an extended physical protein-protein interactions network and a transcription factors regulatory network. Topological and clustering analysis was conducted to analyze the connectivity properties of the networks. Finally both networks were merged into a composite network which presents an integrated view of the regulatory pathways involved in preeclampsia and the crosstalk between them. This network is a useful tool to explore the relationship between the DEGs and enable hypothesis generation for functional experimentation.
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10
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Protein SUMOylation Is Required for Regulatory T Cell Expansion and Function. Cell Rep 2016; 16:1055-1066. [PMID: 27425617 DOI: 10.1016/j.celrep.2016.06.056] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/11/2016] [Accepted: 06/12/2016] [Indexed: 12/22/2022] Open
Abstract
Foxp3-expressing regulatory T (Treg) cells are essential for immune tolerance; however, the molecular mechanisms underlying Treg cell expansion and function are still not well understood. SUMOylation is a protein post-translational modification characterized by covalent attachment of SUMO moieties to lysines. UBC9 is the only E2 conjugating enzyme involved in this process, and loss of UBC9 completely abolishes the SUMOylation pathway. Here, we report that selective deletion of Ubc9 within the Treg lineage results in fatal early-onset autoimmunity similar to Foxp3 mutant mice. Ubc9-deficient Treg cells exhibit severe defects in TCR-driven homeostatic proliferation, accompanied by impaired activation and compromised suppressor function. Importantly, TCR ligation enhanced SUMOylation of IRF4, a critical regulator of Treg cell function downstream of TCR signals, which regulates its stability in Treg cells. Our data thus have demonstrated an essential role of SUMOylation in the expansion and function of Treg cells.
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11
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Rao VK, Ow JR, Shankar SR, Bharathy N, Manikandan J, Wang Y, Taneja R. G9a promotes proliferation and inhibits cell cycle exit during myogenic differentiation. Nucleic Acids Res 2016; 44:8129-43. [PMID: 27229136 PMCID: PMC5041453 DOI: 10.1093/nar/gkw483] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 05/19/2016] [Indexed: 11/12/2022] Open
Abstract
Differentiation of skeletal muscle cells, like most other cell types, requires a permanent exit from the cell cycle. The epigenetic programming underlying these distinct cellular states is not fully understood. In this study, we provide evidence that the lysine methyltransferase G9a functions as a central axis to regulate proliferation and differentiation of skeletal muscle cells. Transcriptome analysis of G9a knockdown cells revealed deregulation of many cell cycle regulatory genes. We demonstrate that G9a enhances cellular proliferation by two distinct mechanisms. G9a blocks cell cycle exit via methylation-dependent transcriptional repression of the MyoD target genes p21(Cip/Waf1) and Rb1. In addition, it activates E2F1-target genes in a methyltransferase activity-independent manner. We show that G9a is present in the E2F1/PCAF complex, and enhances PCAF occupancy and histone acetylation marks at E2F1-target promoters. Interestingly, G9a preferentially associates with E2F1 at the G1/S phase and with MyoD at the G2/M phase. Our results provide evidence that G9a functions both as a co-activator and a co-repressor to enhance cellular proliferation and inhibit myogenic differentiation.
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Affiliation(s)
- Vinay Kumar Rao
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Jin Rong Ow
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Shilpa Rani Shankar
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Narendra Bharathy
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Jayapal Manikandan
- NanoString Technologies, 530 Fairview Ave N, Suite 2000 Seattle, WA, USA
| | - Yaju Wang
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Reshma Taneja
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
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12
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Sato F, Bhawal UK, Yoshimura T, Muragaki Y. DEC1 and DEC2 Crosstalk between Circadian Rhythm and Tumor Progression. J Cancer 2016; 7:153-9. [PMID: 26819638 PMCID: PMC4716847 DOI: 10.7150/jca.13748] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 10/18/2015] [Indexed: 02/06/2023] Open
Abstract
Clock genes, major regulators of circadian rhythm, are involved in tumor progression. We have shown that clock genes basic helix-loop-helix (BHLH) transcription factors, differentiated embryonic chondrocyte gene 1 (DEC1/BHLHE40/Sharp2/Stra13) and DEC2 (BHLHE41/Sharp1) play important roles in circadian rhythm, cell proliferation, apoptosis, hypoxia response, various stresses, and epithelial-to-mesenchymal transition (EMT) of tumor cells. Various stresses, such as exposure to transforming growth factor-beta (TGF-β), hypoxia, cytokines, serum-free, and anti-tumor drugs affect DEC1 and DEC2 expression. An increased or decreased expression of DEC1 and DEC2 regulated tumor progression. However, DEC1 and DEC2 have opposite effects in tumor progression, where the reason behind remains unclear. We found that DEC2 has circadian expression in implanted mouse sarcoma cells, suggesting that DEC2 regulates tumor progression under circadian rhythm. In addition to that, we showed that DEC1 and DEC2 regulate target genes via positive or negative feedback system in tumor progression. We propose that DEC1 and DEC2 act as an accelerator or a brake in tumor progression. In this review, we summarize current progress of knowledge in the function of DEC1 and DEC2 genes in tumor progression.
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Affiliation(s)
- Fuyuki Sato
- 1. Department of Pathology, Wakayama Medical University School of Medicine, Wakayama 641-8509, Japan
| | - Ujjal K. Bhawal
- 2. Department of Biochemistry, Nihon University School of Dentistry at Matsudo, Chiba 271-8587, Japan
| | - Tomohiro Yoshimura
- 1. Department of Pathology, Wakayama Medical University School of Medicine, Wakayama 641-8509, Japan
| | - Yasuteru Muragaki
- 1. Department of Pathology, Wakayama Medical University School of Medicine, Wakayama 641-8509, Japan
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13
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Gómez S, Castellano G, Mayol G, Suñol M, Queiros A, Bibikova M, Nazor KL, Loring JF, Lemos I, Rodríguez E, de Torres C, Mora J, Martín-Subero JI, Lavarino C. DNA methylation fingerprint of neuroblastoma reveals new biological and clinical insights. Epigenomics 2015; 7:1137-53. [PMID: 26067621 DOI: 10.2217/epi.15.49] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
AIM To define the DNA methylation landscape of neuroblastoma and its clinicopathological impact. MATERIALS & METHODS Microarray DNA methylation data were analyzed and associated with functional/regulatory genome annotation data, transcriptional profiles and clinicobiological parameters. RESULTS DNA methylation changes in neuroblastoma affect not only promoters but also intragenic and intergenic regions at cytosine-phosphate-guanine (CpG) and non-CpG sites, and target functional chromatin domains of development and cancer-related genes such as CCND1. Tumors with diverse clinical risk showed differences affecting CpG and, remarkably, non-CpG sites. Non-CpG methylation observed essentially in clinically favorable cases was associated with the differentiation status of neuroblastoma and expression of key genes such as ALK. CONCLUSION This epigenetic fingerprint of neuroblastoma provides new insights into the pathogenesis and clinical behavior of this pediatric tumor.
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Affiliation(s)
- Soledad Gómez
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - Giancarlo Castellano
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, 08036, Spain
| | - Gemma Mayol
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - Mariona Suñol
- Department of Pathology, Hospital Sant Joan de Déu, Barcelona, 08950, Spain
| | - Ana Queiros
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, 08036, Spain
| | | | - Kristopher L Nazor
- Center for Regenerative Medicine, Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jeanne F Loring
- Center for Regenerative Medicine, Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Isadora Lemos
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - Eva Rodríguez
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - Carmen de Torres
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - Jaume Mora
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - José I Martín-Subero
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, 08036, Spain.,Department of Anatomic Pathology, Pharmacology & Microbiology, University of Barcelona, Barcelona, 08036, Spain
| | - Cinzia Lavarino
- Developmental Tumor Biology Laboratory, Hospital Sant Joan de Déu, Edificio Docente 4th floor, C/Santa Rosa 39-57, 08950 Esplugues de Llobregat, Barcelona, Spain
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Tan CM, Li MY, Yang PY, Chang SH, Ho YP, Lin H, Deng WL, Yang JY. Arabidopsis HFR1 is a potential nuclear substrate regulated by the Xanthomonas type III effector XopD(Xcc8004). PLoS One 2015; 10:e0117067. [PMID: 25647296 PMCID: PMC4315394 DOI: 10.1371/journal.pone.0117067] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 12/18/2014] [Indexed: 11/18/2022] Open
Abstract
XopDXcc8004, a type III effector of Xanthomonas campestris pv. campestris (Xcc) 8004, is considered a shorter version of the XopD, which lacks the N-terminal domain. To understand the functions of XopDXcc8004, in planta, a transgenic approach combined with inducible promoter to analyze the effects of XopDXcc8004 in Arabidopsis was done. Here, the expression of XopDXcc8004, in Arabidopsis elicited the accumulation of host defense-response genes. These molecular changes were dependent on salicylic acid and correlated with lesion-mimic phenotypes observed in XVE::XopDXcc8004 transgenic plants. Moreover, XopDXcc8004 was able to desumoylate HFR1, a basic helix-loop-helix transcription factor involved in photomorphogenesis, through SUMO protease activity. Interestingly, the hfr1-201 mutant increased the expression of host defense-response genes and displayed a resistance phenotype to Xcc8004. These data suggest that HFR1 is involved in plant innate immunity and is potentially regulated by XopDXcc8004.
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Affiliation(s)
- Choon Meng Tan
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
- Ph.D. Program in Microbial Genomics, National ChungHsing University and Academia Sinica, Taipei, Taiwan
| | - Meng-Ying Li
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
| | - Pei-Yun Yang
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
| | - Shu Heng Chang
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
| | - Yi-Ping Ho
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
| | - Hong Lin
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
| | - Wen-Ling Deng
- Department of Plant Pathology, National ChungHsing University, Taichung, Taiwan
| | - Jun-Yi Yang
- Institute of Biochemistry, National ChungHsing University, Taichung, Taiwan
- Ph.D. Program in Microbial Genomics, National ChungHsing University and Academia Sinica, Taipei, Taiwan
- Institute of Biotechnology, National ChungHsing University, Taichung, Taiwan
- NCHU-UCD Plant and Food Biotechnology Center, National ChungHsing University, Taichung, Taiwan
- Agricultural Biotechnology Center, National ChungHsing University, Taichung, Taiwan
- * E-mail:
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15
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Lee SY, Li MH, Chen YL, Lin KT, Hsu SW, Chen YH. TAZ is Associated with Poor Osteoblast Differentiation of Mesenchymal Stem Cells Under Simulated Microgravity. JOURNAL OF MEDICAL SCIENCES 2015. [DOI: 10.4103/1011-4564.172997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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16
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Ow JR, Tan YH, Jin Y, Bahirvani AG, Taneja R. Stra13 and Sharp-1, the Non-Grouchy Regulators of Development and Disease. Curr Top Dev Biol 2014; 110:317-38. [DOI: 10.1016/b978-0-12-405943-6.00009-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Li S, Ao X, Wu H. The role of circadian rhythm in breast cancer. Chin J Cancer Res 2013; 25:442-50. [PMID: 23997531 DOI: 10.3978/j.issn.1000-9604.2013.08.19] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 08/14/2013] [Indexed: 11/14/2022] Open
Abstract
The circadian rhythm is an endogenous time keeping system shared by most organisms. The circadian clock is comprised of both peripheral oscillators in most organ tissues of the body and a central pacemaker located in the suprachiasmatic nucleus (SCN) of the central nervous system. The circadian rhythm is crucial in maintaining the normal physiology of the organism including, but not limited to, cell proliferation, cell cycle progression, and cellular metabolism; whereas disruption of the circadian rhythm is closely related to multi-tumorigenesis. In the past several years, studies from different fields have revealed that the genetic or functional disruption of the molecular circadian rhythm has been found in various cancers, such as breast, prostate, and ovarian. In this review, we will investigate and present an overview of the current research on the influence of circadian rhythm regulating proteins on breast cancer.
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Affiliation(s)
- Shujing Li
- The School of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China
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18
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Ivanschitz L, De Thé H, Le Bras M. PML, SUMOylation, and Senescence. Front Oncol 2013; 3:171. [PMID: 23847762 PMCID: PMC3701148 DOI: 10.3389/fonc.2013.00171] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 06/14/2013] [Indexed: 11/15/2022] Open
Abstract
Since its discovery, 25 years ago, promyelocytic leukemia (PML) has been an enigma. Implicated in the oncogenic PML/RARA fusion, forming elusive intranuclear domains, triggering cell death or senescence, controlled by and perhaps controlling SUMOylation… there are multiple PML-related issues. Here we review the reciprocal interactions between PML, senescence, and SUMOylation, notably in the context of cellular transformation.
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Affiliation(s)
- Lisa Ivanschitz
- University Paris Diderot, Sorbonne Paris Cité, Hôpital St. Louis , Paris , France ; INSERM UMR 944, Equipe labellisée par la Ligue Nationale contre le Cancer, Institut Universitaire d'Hématologie, Hôpital St. Louis , Paris , France ; CNRS UMR 7212, Hôpital St. Louis , Paris , France
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19
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Prabhakar MM, Vasudevan K, Karthikeyan S, Baskaran N, Silvan S, Manoharan S. Anti-cell proliferative efficacy of ferulic acid against 7, 12-dimethylbenz(a) anthracene induced hamster buccal pouch carcinogenesis. Asian Pac J Cancer Prev 2013; 13:5207-11. [PMID: 23244136 DOI: 10.7314/apjcp.2012.13.10.5207] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The present study was designed to explore the anti-cell proliferative efficacy of ferulic acid by analysing the expression pattern of cell proliferative markers, proliferating cellular nuclear antigen (PCNA) and cyclin D1, in the buccal mucosa of golden Syrian hamsters treated with 7,12-dimethylbenz(a)anthracene (DMBA). Oral squamous cell carcinomas developed in the buccal pouch of hamsters using topical application of 0.5% DMBA three times a week for 14 weeks. Immunohistochemical (PCNA) and RT-PCR (Cyclin D1) analysis revealed over expression of PCNA and cyclin D1 in the buccal mucosa of hamsters treated with DMBA alone (tumor bearing hamsters). Oral administration of ferulic acid at a dose of 40 mg/kg bw to hamsters treated with DMBA not only completely prevented the tumor formation but also down regulated the expression of PCNA and cyclin D1. The results of the present study thus suggests that ferulic acid might have inhibited tumor formation in the buccal mucosa of hamsters treated with DMBA through its anti-cell proliferative potential as evidenced by decreased expression of PCNA and cyclin D1.
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Affiliation(s)
- M Manoj Prabhakar
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar Tamilnadu, India
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20
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Wang Y, Shankar SR, Kher D, Ling BMT, Taneja R. Sumoylation of the basic helix-loop-helix transcription factor sharp-1 regulates recruitment of the histone methyltransferase G9a and function in myogenesis. J Biol Chem 2013; 288:17654-62. [PMID: 23637228 DOI: 10.1074/jbc.m113.463257] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Sumoylation is an important post-translational modification that alters the activity of many transcription factors. However, the mechanisms that link sumoylation to alterations in chromatin structure, which culminate in tissue specific gene expression, are not fully understood. In this study, we demonstrate that SUMO modification of the transcription factor Sharp-1 is required for its full transcriptional repression activity and function as an inhibitor of skeletal muscle differentiation. Sharp-1 is modified by sumoylation at two conserved lysine residues 240 and 255. Mutation of these SUMO acceptor sites in Sharp-1 does not impact its subcellular localization but attenuates its ability to act as a transcriptional repressor and inhibit myogenic differentiation. Consistently, co-expression of the SUMO protease SENP1 with wild type Sharp-1 abrogates Sharp-1-dependent inhibition of myogenesis. Interestingly, sumoylation acts as a signal for recruitment of the co-repressor G9a. Thus, enrichment of G9a, and histone H3 lysine 9 dimethylation (H3K9me2), a signature of G9a activity, is dramatically reduced at muscle promoters in cells expressing sumoylation-defective Sharp-1. Our findings demonstrate how sumoylation of Sharp-1 exerts an impact on chromatin structure and transcriptional repression of muscle gene expression through recruitment of G9a.
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Affiliation(s)
- Yaju Wang
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
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Effect of the leptin receptor Q223R polymorphism on the host transcriptome following infection with Entamoeba histolytica. Infect Immun 2013; 81:1460-70. [PMID: 23429533 DOI: 10.1128/iai.01383-12] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Resistance to amebiasis is associated with a polymorphism in the leptin receptor. Previous studies demonstrated that humans with the ancestral Q223 leptin receptor allele were nearly four times less likely to be infected with Entamoeba histolytica than those carrying the mutant R223 allele. We hypothesized that the Q223 allele protected against E. histolytica via STAT3-mediated transcription of genes required for mucosal immunity. To test this, mice containing the humanized LEPR Q or R allele at codon 223 were intracecally infected with E. histolytica. Susceptibility to amebiasis was assessed, and cecal tissues were analyzed for changes in gene expression. By 72 h postchallenge, all Q223 mice had cleared E. histolytica, whereas 39% of 223R mice were infected. Thirty-seven genes were differentially expressed in response to infection at 72 h, including proinflammatory genes (CXCL2, S100A8/9, PLA2G7, ITBG2, and MMP9) and functions pertaining to the movement and activity of immune cells. A comparison at 12 h postchallenge of infected Q223 versus R223 mice identified a subset of differentially expressed genes, many of which were closely linked to leptin signaling. Further analyses indicated that the Q223 gene expression pattern was consistent with a suppressed apoptotic response to infection, while 223R showed increased cellular proliferation and recruitment. These studies are the first to illuminate the downstream effects of leptin receptor polymorphisms on intestinal infection by E. histolytica. As such, they are important for the insight that they provide into this previously uncharacterized mechanism of mucosal immunity.
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