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Wang H, Yang Z, Wang S, Zhao A, Wang H, Liu Z, Sui M, Bao L, Zeng Q, Hu J, Bao Z, Huang X. Genome-wide association analysis reveals the genetic basis of thermal tolerance in dwarf surf clam Mulinia lateralis. Genomics 2024; 116:110904. [PMID: 39084476 DOI: 10.1016/j.ygeno.2024.110904] [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: 02/20/2024] [Revised: 06/19/2024] [Accepted: 07/24/2024] [Indexed: 08/02/2024]
Abstract
Recently, elevated seawater temperatures have resulted numerous adverse effects, including significant mortality among bivalves. The dwarf surf clam, Mulinia lateralis, is considered a valuable model species for bivalve research due to its rapid growth and short generation time. The successful cultivation in laboratory setting throughout its entire life cycle makes it an ideal candidate for exploring the potential mechanisms underlying bivalve responses to thermal stress. In this study, a total of 600 clams were subjected to a 17-day thermal stress experiment at a temperature of 30 °C which is the semi-lethal temperature for this species. Ninety individuals who perished initially were classified as heat-sensitive populations (HSP), while 89 individuals who survived the experiment were classified as heat-tolerant populations (HTP). Subsequently, 179 individuals were then sequenced, and 21,292 single nucleotide polymorphisms (SNPs) were genotyped for downstream analysis. The heritability estimate for survival status was found to be 0.375 ± 0.127 suggesting a genetic basis for thermal tolerance trait. Furthermore, a genome-wide association study (GWAS) identified three SNPs and 10 candidate genes associated with thermal tolerance trait in M. lateralis. These candidate genes were involved in the ETHR/EHF signaling pathway and played pivotal role in signal sensory, cell adhesion, oxidative stress, DNA damage repair, etc. Additionally, qPCR results indicated that, excluding MGAT4A, ZAN, and RFC1 genes, all others exhibited significantly higher expression in the HTP (p < 0.05), underscoring the critical involvement of the ETHR/EHF signaling pathway in M. lateralis' thermal tolerance. These results unveil the presence of standing genetic variations associated with thermal tolerance in M. lateralis, highlighting the regulatory role of the ETHR/EHF signaling pathway in the bivalve's response to thermal stress, which contribute to comprehension of the genetic basis of thermal tolerance in bivalves.
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Affiliation(s)
- Haoran Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China; Academy of Future Ocean, Ocean University of China, Qingdao, China
| | - Zujing Yang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China.
| | - Shenhai Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Ang Zhao
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Hao Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Zhi Liu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Mingyi Sui
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Lijingjing Bao
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China; Academy of Future Ocean, Ocean University of China, Qingdao, China
| | - Qifan Zeng
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China; Laboratory of Tropical Marine Germplasm Resources and Breeding Engineering, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
| | - Jingjie Hu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China; Laboratory of Tropical Marine Germplasm Resources and Breeding Engineering, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
| | - Zhenmin Bao
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Laboratory of Tropical Marine Germplasm Resources and Breeding Engineering, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
| | - Xiaoting Huang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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Sun M, Huang X, Ruan X, Shang X, Zhang M, Liu L, Wang P, An P, Lin Y, Yang J, Xue Y. Cpeb4-mediated Dclk2 promotes neuronal pyroptosis induced by chronic cerebral ischemia through phosphorylation of Ehf. J Cereb Blood Flow Metab 2024:271678X241240590. [PMID: 38513137 DOI: 10.1177/0271678x241240590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Chronic cerebral ischemia (CCI) is a clinical syndrome characterised by brain dysfunction due to decreased chronic cerebral perfusion. CCI initiates several inflammatory pathways, including pyroptosis. RNA-binding proteins (RBPs) play important roles in CCI. This study aimed to explore whether the interaction between RBP-Cpeb4 and Dclk2 affected Ehf phosphorylation to regulate neuronal pyroptosis. HT22 cells and mice were used to construct oxygen glucose deprivation (OGD)/CCI models. We found that Cpeb4 and Dclk2 were upregulated in OGD-treated HT22 cells and CCI-induced hippocampal CA1 tissues. Cpeb4 upregulated Dclk2 expression by increasing Dclk2 mRNA stability. Knockdown of Cpeb4 or Dclk2 inhibited neuronal pyroptosis in OGD-treated HT22 cells and CCI-induced hippocampal CA1 tissues. By binding to the promoter regions of Caspase1 and Caspase3, the transcription factor Ehf reduced their promoter activities and inhibited the transcription. Dclk2 phosphorylated Ehf and changed its nucleoplasmic distribution, resulting in the exit of p-Ehf from the nucleus and decreased Ehf levels. It promoted the expression of Caspase1 and Caspase3 and stimulated neuronal pyroptosis of HT22 cells induced by OGD. Cpeb4/Dclk2/Ehf pathway plays an important role in the regulation of cerebral ischemia-induced neuronal pyroptosis.
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Affiliation(s)
- Miao Sun
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Xin Huang
- Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xuelei Ruan
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Xiuli Shang
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Mengyang Zhang
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Libo Liu
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Ping Wang
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Ping An
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Yang Lin
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
| | - Jin Yang
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yixue Xue
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, China
- Key Laboratory of Neuro-Oncology in Liaoning Province, Shenyang, China
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3
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Yuan S, Qian C, Zhang H, Xing Y. Preliminary study of HPV integration status on the occurrence and development of vaginal intraepithelial neoplasia. J Obstet Gynaecol Res 2024; 50:478-484. [PMID: 38072997 DOI: 10.1111/jog.15855] [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: 10/20/2023] [Accepted: 11/27/2023] [Indexed: 03/04/2024]
Abstract
AIM The aim of this study was to investigate how the integration status of HPV in the vaginal epithelium affects the development of vaginal intraepithelial neoplasia (VaIN). METHODS Twenty-four vaginal tissues were collected before applying high-throughput viral integration detection (HIVID), medical records of them were documented, including age, thin-prep cytologic test (TCT) and HPV test results, colposcopic biopsy pathology, and other clinical data, such as history of total hysterectomy for cervical lesions, whether they were infected with HPV16/18 with a follow-up span of 2 years. We summarized the distribution of HPV integration on the host chromosome and HPV type, as well as the hotspot integration gene and its role in the development of VaIN. RESULTS In this study, 24 cases suffered from VaIN were involved. HPV integration was detected in 11 cases; furthermore, we discovered HPV 16 and 73, chromosome 1 and 2 possessed most HPV integration sites while EMBP1, CLO5A1, EHF, ELF5 as dominate hot spots. Taken clinical outcome into account, we found a significant difference between HPV integration occurrence and VaIN (p = 0.011). CONCLUSION (1) This study found a statistical difference between HPV integration and the occurrence of VaIN; (2) HPV integration may provide a new clinical predictor for VaIN and facilitate risk assessment and stratified management of high-risk patients.
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Affiliation(s)
- Shuning Yuan
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Cheng Qian
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hailong Zhang
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Xing
- Department of Gynecology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Lammers S, Barrera V, Brennecke P, Miller C, Yoon J, Balolong J, Anderson MS, Ho Sui S, Steinmetz LM, von Andrian UH, Rattay K. Ehf and Fezf2 regulate late medullary thymic epithelial cell and thymic tuft cell development. Front Immunol 2024; 14:1277365. [PMID: 38420512 PMCID: PMC10901246 DOI: 10.3389/fimmu.2023.1277365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/29/2023] [Indexed: 03/02/2024] Open
Abstract
Thymic epithelial cells are indispensable for T cell maturation and selection and the induction of central immune tolerance. The self-peptide repertoire expressed by medullary thymic epithelial cells is in part regulated by the transcriptional regulator Aire (Autoimmune regulator) and the transcription factor Fezf2. Due to the high complexity of mTEC maturation stages (i.e., post-Aire, Krt10+ mTECs, and Dclk1+ Tuft mTECs) and the heterogeneity in their gene expression profiles (i.e., mosaic expression patterns), it has been challenging to identify the additional factors complementing the transcriptional regulation. We aimed to identify the transcriptional regulators involved in the regulation of mTEC development and self-peptide expression in an unbiased and genome-wide manner. We used ATAC footprinting analysis as an indirect approach to identify transcription factors involved in the gene expression regulation in mTECs, which we validated by ChIP sequencing. This study identifies Fezf2 as a regulator of the recently described thymic Tuft cells (i.e., Tuft mTECs). Furthermore, we identify that transcriptional regulators of the ELF, ESE, ERF, and PEA3 subfamily of the ETS transcription factor family and members of the Krüppel-like family of transcription factors play a role in the transcriptional regulation of genes involved in late mTEC development and promiscuous gene expression.
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Affiliation(s)
- Sören Lammers
- Institute for Theoretical Physics, Heidelberg University, Heidelberg, Germany
| | - Victor Barrera
- Bioinformatics Core, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Philip Brennecke
- Department of Genetics, Stanford University, School of Medicine, Stanford, CA, United States
- Stanford Genome Technology Center, Stanford University, Stanford, CA, United States
| | - Corey Miller
- Diabetes Center, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Joon Yoon
- Bioinformatics Core, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Jared Balolong
- Diabetes Center, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Mark S. Anderson
- Diabetes Center, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Shannan Ho Sui
- Bioinformatics Core, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Lars M. Steinmetz
- Department of Genetics, Stanford University, School of Medicine, Stanford, CA, United States
- Stanford Genome Technology Center, Stanford University, Stanford, CA, United States
- Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Ulrich H. von Andrian
- Department of Immunology & HMS Center for Immune Imaging, Harvard Medical School, Boston, MA, United States
- The Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, United States
| | - Kristin Rattay
- Department of Immunology & HMS Center for Immune Imaging, Harvard Medical School, Boston, MA, United States
- Pharmacological Institute, Biochemical Pharmacological Center, University of Marburg, Marburg, Germany
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5
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Ramal M, Corral S, Kalisz M, Lapi E, Real FX. The urothelial gene regulatory network: understanding biology to improve bladder cancer management. Oncogene 2024; 43:1-21. [PMID: 37996699 DOI: 10.1038/s41388-023-02876-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 11/25/2023]
Abstract
The urothelium is a stratified epithelium composed of basal cells, one or more layers of intermediate cells, and an upper layer of differentiated umbrella cells. Most bladder cancers (BLCA) are urothelial carcinomas. Loss of urothelial lineage fidelity results in altered differentiation, highlighted by the taxonomic classification into basal and luminal tumors. There is a need to better understand the urothelial transcriptional networks. To systematically identify transcription factors (TFs) relevant for urothelial identity, we defined highly expressed TFs in normal human bladder using RNA-Seq data and inferred their genomic binding using ATAC-Seq data. To focus on epithelial TFs, we analyzed RNA-Seq data from patient-derived organoids recapitulating features of basal/luminal tumors. We classified TFs as "luminal-enriched", "basal-enriched" or "common" according to expression in organoids. We validated our classification by differential gene expression analysis in Luminal Papillary vs. Basal/Squamous tumors. Genomic analyses revealed well-known TFs associated with luminal (e.g., PPARG, GATA3, FOXA1) and basal (e.g., TP63, TFAP2) phenotypes and novel candidates to play a role in urothelial differentiation or BLCA (e.g., MECOM, TBX3). We also identified TF families (e.g., KLFs, AP1, circadian clock, sex hormone receptors) for which there is suggestive evidence of their involvement in urothelial differentiation and/or BLCA. Genomic alterations in these TFs are associated with BLCA. We uncover a TF network involved in urothelial cell identity and BLCA. We identify novel candidate TFs involved in differentiation and cancer that provide opportunities for a better understanding of the underlying biology and therapeutic intervention.
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Affiliation(s)
- Maria Ramal
- Epithelial Carcinogenesis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Sonia Corral
- Epithelial Carcinogenesis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Mark Kalisz
- Epithelial Carcinogenesis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- CIBERONC, Madrid, Spain
| | - Eleonora Lapi
- Epithelial Carcinogenesis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- CIBERONC, Madrid, Spain
| | - Francisco X Real
- Epithelial Carcinogenesis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain.
- CIBERONC, Madrid, Spain.
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
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6
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Blotas C, Férec C, Moisan S. Tissue-Specific Regulation of CFTR Gene Expression. Int J Mol Sci 2023; 24:10678. [PMID: 37445855 DOI: 10.3390/ijms241310678] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/21/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
More than 2000 variations are described within the CFTR (Cystic Fibrosis Transmembrane Regulator) gene and related to large clinical issues from cystic fibrosis to mono-organ diseases. Although these CFTR-associated diseases have been well documented, a large phenotype spectrum is observed and correlations between phenotypes and genotypes are still not well established. To address this issue, we present several regulatory elements that can modulate CFTR gene expression in a tissue-specific manner. Among them, cis-regulatory elements act through chromatin loopings and take part in three-dimensional structured organization. With tissue-specific transcription factors, they form chromatin modules and can regulate gene expression. Alterations of specific regulations can impact and modulate disease expressions. Understanding all those mechanisms highlights the need to expand research outside the gene to enhance our knowledge.
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Affiliation(s)
- Clara Blotas
- Univ Brest, Inserm, EFS, UMR 1078, GGB, F-29200 Brest, France
| | - Claude Férec
- Univ Brest, Inserm, EFS, UMR 1078, GGB, F-29200 Brest, France
| | - Stéphanie Moisan
- Univ Brest, Inserm, EFS, UMR 1078, GGB, F-29200 Brest, France
- Laboratoire de Génétique Moléculaire et d'Histocompatibilité, CHU Brest, F-29200 Brest, France
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7
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Koh KD, Bonser LR, Eckalbar WL, Yizhar-Barnea O, Shen J, Zeng X, Hargett KL, Sun DI, Zlock LT, Finkbeiner WE, Ahituv N, Erle DJ. Genomic characterization and therapeutic utilization of IL-13-responsive sequences in asthma. CELL GENOMICS 2023; 3:100229. [PMID: 36777184 PMCID: PMC9903679 DOI: 10.1016/j.xgen.2022.100229] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/02/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022]
Abstract
Epithelial responses to the cytokine interleukin-13 (IL-13) cause airway obstruction in asthma. Here we utilized multiple genomic techniques to identify IL-13-responsive regulatory elements in bronchial epithelial cells and used these data to develop a CRISPR interference (CRISPRi)-based therapeutic approach to downregulate airway obstruction-inducing genes in a cell type- and IL-13-specific manner. Using single-cell RNA sequencing (scRNA-seq) and acetylated lysine 27 on histone 3 (H3K27ac) chromatin immunoprecipitation sequencing (ChIP-seq) in primary human bronchial epithelial cells, we identified IL-13-responsive genes and regulatory elements. These sequences were functionally validated and optimized via massively parallel reporter assays (MPRAs) for IL-13-inducible activity. The top secretory cell-selective sequence from the MPRA, a novel, distal enhancer of the sterile alpha motif pointed domain containing E-26 transformation-specific transcription factor (SPDEF) gene, was utilized to drive CRISPRi and knock down SPDEF or mucin 5AC (MUC5AC), both involved in pathologic mucus production in asthma. Our work provides a catalog of cell type-specific genes and regulatory elements involved in IL-13 bronchial epithelial response and showcases their use for therapeutic purposes.
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Affiliation(s)
- Kyung Duk Koh
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Luke R. Bonser
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Walter L. Eckalbar
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
- CoLabs, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ofer Yizhar-Barnea
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jiangshan Shen
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Xiaoning Zeng
- Department of Pulmonary & Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kirsten L. Hargett
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Dingyuan I. Sun
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Lorna T. Zlock
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Walter E. Finkbeiner
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Nadav Ahituv
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - David J. Erle
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
- CoLabs, University of California, San Francisco, San Francisco, CA 94143, USA
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8
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Linville RM, Sklar MB, Grifno GN, Nerenberg RF, Zhou J, Ye R, DeStefano JG, Guo Z, Jha R, Jamieson JJ, Zhao N, Searson PC. Three-dimensional microenvironment regulates gene expression, function, and tight junction dynamics of iPSC-derived blood-brain barrier microvessels. Fluids Barriers CNS 2022; 19:87. [PMID: 36333694 PMCID: PMC9636829 DOI: 10.1186/s12987-022-00377-1] [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: 08/02/2022] [Accepted: 10/03/2022] [Indexed: 11/08/2022] Open
Abstract
The blood-brain barrier (BBB) plays a pivotal role in brain health and disease. In the BBB, brain microvascular endothelial cells (BMECs) are connected by tight junctions which regulate paracellular transport, and express specialized transporter systems which regulate transcellular transport. However, existing in vitro models of the BBB display variable accuracy across a wide range of characteristics including gene/protein expression and barrier function. Here, we use an isogenic family of fluorescently-labeled iPSC-derived BMEC-like cells (iBMECs) and brain pericyte-like cells (iPCs) within two-dimensional confluent monolayers (2D) and three-dimensional (3D) tissue-engineered microvessels to explore how 3D microenvironment regulates gene expression and function of the in vitro BBB. We show that 3D microenvironment (shear stress, cell-ECM interactions, and cylindrical geometry) increases BBB phenotype and endothelial identity, and alters angiogenic and cytokine responses in synergy with pericyte co-culture. Tissue-engineered microvessels incorporating junction-labeled iBMECs enable study of the real-time dynamics of tight junctions during homeostasis and in response to physical and chemical perturbations.
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Affiliation(s)
- Raleigh M Linville
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA.
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA.
| | - Matthew B Sklar
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
| | - Gabrielle N Grifno
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Renée F Nerenberg
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Justin Zhou
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Robert Ye
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
| | - Jackson G DeStefano
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Zhaobin Guo
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
| | - Ria Jha
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - John J Jamieson
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Nan Zhao
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
| | - Peter C Searson
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA.
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA.
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, USA.
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9
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Van Wettere AJ, Leir S, Cotton CU, Regouski M, Viotti Perisse I, Kerschner JL, Paranjapye A, Fan Z, Liu Y, Schacht M, White KL, Polejaeva IA, Harris A. Early developmental phenotypes in the cystic fibrosis sheep model. FASEB Bioadv 2022; 5:13-26. [PMID: 36643895 PMCID: PMC9832529 DOI: 10.1096/fba.2022-00085] [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: 08/10/2022] [Accepted: 10/10/2022] [Indexed: 01/12/2023] Open
Abstract
Highly effective modulator therapies for cystic fibrosis (CF) make it a treatable condition for many people. However, although CF respiratory illness occurs after birth, other organ systems particularly in the digestive tract are damaged before birth. We use an ovine model of CF to investigate the in utero origins of CF disease since the sheep closely mirrors critical aspects of human development. Wildtype (WT) and CFTR -/- sheep tissues were collected at 50, 65, 80, 100, and 120 days of gestation and term (147 days) and used for histological, electrophysiological, and molecular analysis. Histological abnormalities are evident in CFTR-/- -/- animals by 80 days of gestation, equivalent to 21 weeks in humans. Acinar and ductal dilation, mucus obstruction, and fibrosis are observed in the pancreas; biliary fibrosis, cholestasis, and gallbladder hypoplasia in the liver; and intestinal meconium obstruction, as seen at birth in all large animal models of CF. Concurrently, cystic fibrosis transmembrane conductance regulator (CFTR)-dependent short circuit current is present in WT tracheal epithelium by 80 days gestation and is absent from CFTR -/- tissues. Transcriptomic profiles of tracheal tissues confirm the early expression of CFTR and suggest that its loss does not globally impair tracheal differentiation.
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Affiliation(s)
- Arnaud J. Van Wettere
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA,School of Veterinary MedicineUtah State UniversityLoganUtahUSA
| | - Shih‐Hsing Leir
- Department of Genetics and Genome SciencesCase Western Reserve University School of MedicineClevelandOhioUSA
| | - Calvin U. Cotton
- Departments of Pediatrics, Physiology and BiophysicsCase Western Reserve University School of MedicineClevelandOhioUSA,Present address:
CFFT LaboratoriesLexingtonMassachusettsUSA
| | - Misha Regouski
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA
| | - Iuri Viotti Perisse
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA
| | - Jenny L. Kerschner
- Department of Genetics and Genome SciencesCase Western Reserve University School of MedicineClevelandOhioUSA
| | - Alekh Paranjapye
- Department of Genetics and Genome SciencesCase Western Reserve University School of MedicineClevelandOhioUSA
| | - Zhiqiang Fan
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA
| | - Ying Liu
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA
| | - Makayla Schacht
- Department of Genetics and Genome SciencesCase Western Reserve University School of MedicineClevelandOhioUSA
| | - Kenneth L. White
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA
| | - Irina A. Polejaeva
- Department of Animal, Dairy and Veterinary SciencesUtah State UniversityLoganUtahUSA
| | - Ann Harris
- Department of Genetics and Genome SciencesCase Western Reserve University School of MedicineClevelandOhioUSA
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10
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Paranjapye A, NandyMazumdar M, Harris A. Krüppel-Like Factor 5 Regulates CFTR Expression Through Repression by Maintaining Chromatin Architecture Coupled with Direct Enhancer Activation. J Mol Biol 2022; 434:167561. [PMID: 35341742 DOI: 10.1016/j.jmb.2022.167561] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 02/06/2023]
Abstract
Single cell RNA-sequencing has accurately identified cell types within the human airway that express the Cystic Fibrosis Transmembrane Conductance regulator (CFTR) gene. Low abundance CFTR transcripts are seen in many secretory cells, while high levels are restricted to rare pulmonary ionocytes. Here we focus on the mechanisms coordinating basal CFTR expression in the secretory compartment. Cell-selective regulation of CFTR is achieved within its invariant topologically associating domain by the recruitment of cis-regulatory elements (CREs). CRE activity is coordinated by cell-type-selective transcription factors. One such factor, Krüppel-Like Factor 5 (KLF5), profoundly represses CFTR transcript and protein in primary human airway epithelial cells and airway cell lines. Here we reveal the mechanism of action of KLF5 upon the CFTR gene. We find that depletion or ablation of KLF5 from airway epithelial cells changes higher order chromatin structure at the CFTR locus. Critical looping interactions that are required for normal gene expression are altered, the H3K27ac active chromatin mark is redistributed, and CTCF occupancy is modified. However, mutation of a single KLF5 binding site within a pivotal airway cell CRE abolishes CFTR expression. Hence, KLF5 has both direct activating and indirect repressive effects, which together coordinate CFTR expression in the airway.
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Affiliation(s)
- Alekh Paranjapye
- Department of Genetics and Genome Sciences, and Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Monali NandyMazumdar
- Department of Genetics and Genome Sciences, and Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Ann Harris
- Department of Genetics and Genome Sciences, and Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.
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11
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Butnariu LI, Țarcă E, Cojocaru E, Rusu C, Moisă ȘM, Leon Constantin MM, Gorduza EV, Trandafir LM. Genetic Modifying Factors of Cystic Fibrosis Phenotype: A Challenge for Modern Medicine. J Clin Med 2021; 10:5821. [PMID: 34945117 PMCID: PMC8707808 DOI: 10.3390/jcm10245821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022] Open
Abstract
Cystic fibrosis (CF) is a monogenic autosomal recessive disease caused by cystic fibrosis transmembrane conductance regulator (CFTR) gene mutations. CF is characterized by a high phenotypic variability present even in patients with the same genotype. This is due to the intervention of modifier genes that interact with both the CFTR gene and environmental factors. The purpose of this review is to highlight the role of non-CFTR genetic factors (modifier genes) that contribute to phenotypic variability in CF. We analyzed literature data starting with candidate gene studies and continuing with extensive studies, such as genome-wide association studies (GWAS) and whole exome sequencing (WES). The results of both types of studies revealed that the number of modifier genes in CF patients is impressive. Their identification offers a new perspective on the pathophysiological mechanisms of the disease, paving the way for the understanding of other genetic disorders. In conclusion, in the future, genetic analysis, such as GWAS and WES, should be performed routinely. A challenge for future research is to integrate their results in the process of developing new classes of drugs, with a goal to improve the prognosis, increase life expectancy, and enhance quality of life among CF patients.
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Affiliation(s)
- Lăcrămioara Ionela Butnariu
- Department of Medical Genetics, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.I.B.); (C.R.); (E.V.G.)
| | - Elena Țarcă
- Department of Surgery II—Pediatric Surgery, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iaşi, Romania
| | - Elena Cojocaru
- Department of Morphofunctional Sciences I, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iaşi, Romania
| | - Cristina Rusu
- Department of Medical Genetics, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.I.B.); (C.R.); (E.V.G.)
| | - Ștefana Maria Moisă
- Department of Mother and Child, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (Ș.M.M.); (L.M.T.)
| | | | - Eusebiu Vlad Gorduza
- Department of Medical Genetics, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.I.B.); (C.R.); (E.V.G.)
| | - Laura Mihaela Trandafir
- Department of Mother and Child, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (Ș.M.M.); (L.M.T.)
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12
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Paranjapye A, NandyMazumdar M, Browne JA, Leir SH, Harris A. Krüppel-like factor 5 regulates wound repair and the innate immune response in human airway epithelial cells. J Biol Chem 2021; 297:100932. [PMID: 34217701 PMCID: PMC8353497 DOI: 10.1016/j.jbc.2021.100932] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 06/17/2021] [Accepted: 06/29/2021] [Indexed: 12/23/2022] Open
Abstract
A complex network of transcription factors regulates genes involved in establishing and maintaining key biological properties of the human airway epithelium. However, detailed knowledge of the contributing factors is incomplete. Here we characterize the role of Krüppel-like factor 5 (KLF5), in controlling essential pathways of epithelial cell identity and function in the human lung. RNA-seq following siRNA-mediated depletion of KLF5 in the Calu-3 lung epithelial cell line identified significant enrichment of genes encoding chemokines and cytokines involved in the proinflammatory response and also components of the junctional complexes mediating cell adhesion. To determine direct gene targets of KLF5, we defined the cistrome of KLF5 using ChIP-seq in both Calu-3 and 16HBE14o- lung epithelial cell lines. Occupancy site concordance analysis revealed that KLF5 colocalized with the active histone modification H3K27ac and also with binding sites for the transcription factor CCAAT enhancer-binding protein beta (C/EBPβ). Depletion of KLF5 increased both the expression and secretion of cytokines including IL-1β, a response that was enhanced following exposure to Pseudomonas aeruginosa lipopolysaccharide. Calu-3 cells exhibited faster rates of repair after KLF5 depletion compared with negative controls in wound scratch assays. Similarly, CRISPR-mediated KLF5-null 16HBE14o- cells also showed enhanced wound closure. These data reveal a pivotal role for KLF5 in coordinating epithelial functions relevant to human lung disease.
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Affiliation(s)
- Alekh Paranjapye
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - Monali NandyMazumdar
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - James A Browne
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - Shih-Hsing Leir
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio, USA
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio, USA.
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13
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Harris A. Human molecular genetics and the long road to treating cystic fibrosis. Hum Mol Genet 2021; 30:R264-R273. [PMID: 34245257 DOI: 10.1093/hmg/ddab191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/04/2021] [Accepted: 07/06/2021] [Indexed: 11/13/2022] Open
Abstract
The causative gene in cystic fibrosis was identified in 1989, three years before the publication of the first issue of Human Molecular Genetics. CFTR was among the first genes underlying a common inherited disorder to be cloned, and hence its subsequent utilization towards a cure for CF provides a roadmap for other monogenic diseases. Over the past 30 years the advances that built upon knowledge of the gene and the CFTR protein to develop effective therapeutics have been remarkable, and yet the setbacks have also been challenging. Technological progress in other fields has often circumvented the barriers. This review focuses on key aspects of CF diagnostics and current approaches to develop new therapies for all CFTR mutations. It also highlights the major research advances that underpinned progress towards treatments, and considers the remaining obstacles.
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Affiliation(s)
- Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
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14
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Sepahzad A, Morris-Rosendahl DJ, Davies JC. Cystic Fibrosis Lung Disease Modifiers and Their Relevance in the New Era of Precision Medicine. Genes (Basel) 2021; 12:genes12040562. [PMID: 33924524 PMCID: PMC8069009 DOI: 10.3390/genes12040562] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 02/06/2023] Open
Abstract
Our understanding of cystic fibrosis (CF) has grown exponentially since the discovery of the cystic fibrosis transmembrane conductance regulator (CFTR) gene in 1989. With evolving genetic and genomic tools, we have come to better understand the role of CFTR genotypes in the pathophysiology of the disease. This, in turn, has paved the way for the development of modulator therapies targeted at mutations in the CFTR, which are arguably one of the greatest advances in the treatment of CF. These modulator therapies, however, do not target all the mutations in CFTR that are seen in patients with CF and, furthermore, a variation in response is seen in patients with the same genotype who are taking modulator therapies. There is growing evidence to support the role of non-CFTR modifiers, both genetic and environmental, in determining the variation seen in CF morbidity and mortality and also in the response to existing therapies. This review focusses on key findings from studies using candidate gene and genome-wide approaches to identify CF modifier genes of lung disease in cystic fibrosis and considers the interaction between modifiers and the response to modulator therapies. As the use of modulator therapies expands and we gain data around outcomes, it will be of great interest to investigate this interaction further. Going forward, it will also be crucial to better understand the relative influence of genomic versus environmental factors. With this understanding, we can truly begin to deliver personalised care by better profiling the likely disease phenotype for each patient and their response to treatment.
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Affiliation(s)
- Afsoon Sepahzad
- Department of Paediatric Respiratory Medicine, Royal Brompton and Harefield Hospitals, London SW3 6NP, UK;
| | | | - Jane C. Davies
- Department of Paediatric Respiratory Medicine, Royal Brompton and Harefield Hospitals, London SW3 6NP, UK;
- National Heart & Lung Institute, Imperial College London, Emmanuel Kay Building, 1b Manresa Rd, London SW3 6LR, UK
- Correspondence:
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15
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Browne JA, NandyMazumdar M, Paranjapye A, Leir SH, Harris A. The Bromodomain Containing 8 (BRD8) transcriptional network in human lung epithelial cells. Mol Cell Endocrinol 2021; 524:111169. [PMID: 33476703 PMCID: PMC8035426 DOI: 10.1016/j.mce.2021.111169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/18/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022]
Abstract
Mechanisms regulating gene expression in the airway epithelium underlie its response to the environment. A network of transcription factors (TFs) and architectural proteins, modulate chromatin accessibility and recruit activating or repressive signals. Bromodomain-containing proteins function as TFs or by engaging methyltransferase or acetyltransferase activity to induce chromatin modifications. Here we investigate the role of Bromodomain Containing 8 (BRD8) in coordinating lung epithelial function. Sites of BRD8 occupancy genome-wide were mapped in human lung epithelial cell lines (Calu-3 and 16HBE14o-). CCCTC-Binding Factor (CTCF) was identified as a predicted co-factor of BRD8, based upon motif over-representation under BRD8 ChIP-seq peaks. Following siRNA-mediated depletion of BRD8, differentially expressed genes with nearby peaks of BRD8 occupancy were subject to gene ontology process enrichment analysis. BRD8 targets are enriched for genes involved in the innate immune response and the cell cycle. Depletion of BRD8 increased the secretion of the antimicrobial peptide beta-defensin 1 and multiple chemokines, and reduced cell proliferation.
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Affiliation(s)
- James A Browne
- Department of Genetics and Genome Sciences, Cleveland, OH, USA
| | | | | | - Shih-Hsing Leir
- Department of Genetics and Genome Sciences, Cleveland, OH, USA; Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Ann Harris
- Department of Genetics and Genome Sciences, Cleveland, OH, USA; Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA.
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16
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Improved detection of tumor suppressor events in single-cell RNA-Seq data. NPJ Genom Med 2020; 5:43. [PMID: 33083012 PMCID: PMC7541488 DOI: 10.1038/s41525-020-00151-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/21/2020] [Indexed: 12/17/2022] Open
Abstract
Tissue-specific transcription factors are frequently inactivated in cancer. To fully dissect the heterogeneity of such tumor suppressor events requires single-cell resolution, yet this is challenging because of the high dropout rate. Here we propose a simple yet effective computational strategy called SCIRA to infer regulatory activity of tissue-specific transcription factors at single-cell resolution and use this tool to identify tumor suppressor events in single-cell RNA-Seq cancer studies. We demonstrate that tissue-specific transcription factors are preferentially inactivated in the corresponding cancer cells, suggesting that these are driver events. For many known or suspected tumor suppressors, SCIRA predicts inactivation in single cancer cells where differential expression does not, indicating that SCIRA improves the sensitivity to detect changes in regulatory activity. We identify NKX2-1 and TBX4 inactivation as early tumor suppressor events in normal non-ciliated lung epithelial cells from smokers. In summary, SCIRA can help chart the heterogeneity of tumor suppressor events at single-cell resolution.
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17
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Chen JC, Chen MY, Fang C, Zheng RH, Jiang YL, Zhang YS, Wang KJ, Bailey C, Segner H, Bo J. Microplastics negatively impact embryogenesis and modulate the immune response of the marine medaka Oryzias melastigma. MARINE POLLUTION BULLETIN 2020; 158:111349. [PMID: 32573451 DOI: 10.1016/j.marpolbul.2020.111349] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Microplastic (MP) pollution is an emerging contaminant in aquatic environments worldwide. Nonetheless, the developmental toxicity of MPs in the early life stages of fish and the mechanisms involved are not yet fully understood. The present study investigated the effects of different concentrations of polystyrene (PS) MPs on the early development of the marine model fish the medaka Oryzias melastigma. Our results showed that waterborne exposure to PS MPs significantly delayed the hatching time, altered the heartbeat and decreased the hatching rate of embryos. Furthermore, the genes involved in cardiac development, encoding for embryo-hatching enzymes, as well as inflammatory responses were significantly upregulated. The transcriptome results showed that mainly the pathways involved in metabolism, immune response, genetic information processing and diseases were significantly enriched. These results demonstrate that PS MPs negatively impact embryogenesis and the immune response of O. melastigma.
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Affiliation(s)
- Jin-Can Chen
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, 361005 Xiamen, China
| | - Meng-Yun Chen
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China
| | - Chao Fang
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China
| | - Rong-Hui Zheng
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China
| | - Yu-Lu Jiang
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, 361005 Xiamen, China
| | - Yu-Sheng Zhang
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China
| | - Ke-Jian Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, 361005 Xiamen, China
| | - Christyn Bailey
- Fish Immunology and Pathology Laboratory, Animal Health Research Center (CISA-INIA), Madrid, Spain
| | - Helmut Segner
- Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, University of Bern, Bern, Switzerland
| | - Jun Bo
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361102, China.
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18
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Kerschner JL, Paranjapye A, Yin S, Skander DL, Bebek G, Leir SH, Harris A. A functional genomics approach to investigate the differentiation of iPSCs into lung epithelium at air-liquid interface. J Cell Mol Med 2020; 24:9853-9870. [PMID: 32692488 PMCID: PMC7520342 DOI: 10.1111/jcmm.15568] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/02/2020] [Accepted: 06/13/2020] [Indexed: 01/24/2023] Open
Abstract
The availability of robust protocols to differentiate induced pluripotent stem cells (iPSCs) into many human cell lineages has transformed research into the origins of human disease. The efficacy of differentiating iPSCs into specific cellular models is influenced by many factors including both intrinsic and extrinsic features. Among the most challenging models is the generation of human bronchial epithelium at air‐liquid interface (HBE‐ALI), which is the gold standard for many studies of respiratory diseases including cystic fibrosis. Here, we perform open chromatin mapping by ATAC‐seq and transcriptomics by RNA‐seq in parallel, to define the functional genomics of key stages of the iPSC to HBE‐ALI differentiation. Within open chromatin peaks, the overrepresented motifs include the architectural protein CTCF at all stages, while motifs for the FOXA pioneer and GATA factor families are seen more often at early stages, and those regulating key airway epithelial functions, such as EHF, are limited to later stages. The RNA‐seq data illustrate dynamic pathways during the iPSC to HBE‐ALI differentiation, and also the marked functional divergence of different iPSC lines at the ALI stages of differentiation. Moreover, a comparison of iPSC‐derived and lung donor‐derived HBE‐ALI cultures reveals substantial differences between these models.
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Affiliation(s)
- Jenny L Kerschner
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Alekh Paranjapye
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Shiyi Yin
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Dannielle L Skander
- Systems Biology and Bioinformatics Graduate Program, Case Western Reserve University, Cleveland, OH, USA
| | - Gurkan Bebek
- Systems Biology and Bioinformatics Graduate Program, Case Western Reserve University, Cleveland, OH, USA.,Center for Proteomics and Bioinformatics, Case Western Reserve University, Cleveland, OH, USA.,Department of Nutrition, Case Western Reserve University, Cleveland, OH, USA.,Electrical Engineering and Computer Science Department, Case Western Reserve University, Cleveland, OH, USA
| | - Shih-Hsing Leir
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
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19
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Wang L, Ai M, Nie M, Zhao L, Deng G, Hu S, Han Y, Zeng W, Wang Y, Yang M, Wang S. EHF promotes colorectal carcinoma progression by activating TGF-β1 transcription and canonical TGF-β signaling. Cancer Sci 2020; 111:2310-2324. [PMID: 32372436 PMCID: PMC7385339 DOI: 10.1111/cas.14444] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/27/2020] [Accepted: 05/01/2020] [Indexed: 12/16/2022] Open
Abstract
ETS homologous factor (EHF) plays a critical function in epithelial cell differentiation and proliferation. However, the roles of EHF in cancer remain largely unknown. In the present study, we investigated the expression levels, precise function and mechanism of EHF in colorectal carcinoma (CRC). We observed significantly elevated EHF expression in CRC cell lines and tissues. EHF overexpression correlated positively with poor differentiation, advanced T stage, and shorter overall survival of CRC patients. Function experiments revealed that EHF overexpression promoted CRC cell proliferation, migration, and invasion in vitro and in vivo. Mechanistically, EHF could directly upregulate transforming growth factor β1 (TGF-β1) expression at the transcription level, thereby activating canonical TGF-β signaling. Our findings provide novel insights into the mechanisms of EHF in tumorigenesis, invasion, and metastasis of CRC, which may help to provide new therapeutic targets for CRC intervention.
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Affiliation(s)
- Lan Wang
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Meiling Ai
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Miaoting Nie
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Li Zhao
- Department of PathologyThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Guangxu Deng
- Department of General SurgeryNanfang Hospital, Southern Medical UniversityGuangzhouChina
| | - Shasha Hu
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Yue Han
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Weiting Zeng
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Yiqing Wang
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Minhui Yang
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
| | - Shuang Wang
- Department of PathologyNanfang Hospital, Southern Medical UniversityGuangzhouChina
- Department of PathologySchool of Basic Medical Sciences, Southern Medical UniversityGuangzhouChina
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20
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Paranjapye A, Mutolo MJ, Ebron JS, Leir SH, Harris A. The FOXA1 transcriptional network coordinates key functions of primary human airway epithelial cells. Am J Physiol Lung Cell Mol Physiol 2020; 319:L126-L136. [PMID: 32432922 DOI: 10.1152/ajplung.00023.2020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The differentiated functions of the human airway epithelium are coordinated by a complex network of transcription factors. These include the pioneer factors Forkhead box A1 and A2 (FOXA1 and FOXA2), which are well studied in several tissues, but their role in airway epithelial cells is poorly characterized. Here, we define the cistrome of FOXA1 and FOXA2 in primary human bronchial epithelial (HBE) cells by chromatin immunoprecipitation with deep-sequencing (ChIP-seq). Next, siRNA-mediated depletion of each factor is used to investigate their transcriptome by RNA-seq. We found that, as predicted from their DNA-binding motifs, genome-wide occupancy of the two factors showed substantial overlap; however, their global impact on gene expression differed. FOXA1 is an abundant transcript in HBE cells, while FOXA2 is expressed at low levels, and both these factors likely exhibit autoregulation and cross-regulation. FOXA1 regulated loci are involved in cell adhesion and the maintenance of epithelial cell identity, particularly through repression of genes associated with epithelial to mesenchymal transition (EMT). FOXA1 also directly targets other transcription factors with a known role in the airway epithelium such as SAM-pointed domain-containing Ets-like factor (SPDEF). The intersection of the cistrome and transcriptome for FOXA1 revealed enrichment of genes involved in epithelial development and tissue morphogenesis. Moreover, depletion of FOXA1 was shown to reduce the transepithelial resistance of HBE cells, confirming the role of this factor in maintaining epithelial barrier integrity.
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Affiliation(s)
- Alekh Paranjapye
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Michael J Mutolo
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Jey Sabith Ebron
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Shih-Hsing Leir
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, Ohio
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21
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Yin S, Ray G, Kerschner JL, Hao S, Perez A, Drumm ML, Browne JA, Leir SH, Longworth M, Harris A. Functional genomics analysis of human colon organoids identifies key transcription factors. Physiol Genomics 2020; 52:234-244. [PMID: 32390556 DOI: 10.1152/physiolgenomics.00113.2019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Organoids are a valuable three-dimensional (3D) model to study the differentiated functions of the human intestinal epithelium. They are a particularly powerful tool to measure epithelial transport processes in health and disease. Though biological assays such as organoid swelling and intraluminal pH measurements are well established, their underlying functional genomics are not well characterized. Here we combine genome-wide analysis of open chromatin by ATAC-Seq with transcriptome mapping by RNA-Seq to define the genomic signature of human intestinal organoids (HIOs). These data provide an important tool for investigating key physiological and biochemical processes in the intestinal epithelium. We next compared the transcriptome and open chromatin profiles of HIOs with equivalent data sets from the Caco2 colorectal carcinoma line, which is an important two-dimensional (2D) model of the intestinal epithelium. Our results define common features of the intestinal epithelium in HIO and Caco2 and further illustrate the cancer-associated program of the cell line. Generation of Caco2 cysts enabled interrogation of the molecular divergence of the 2D and 3D cultures. Overrepresented motif analysis of open chromatin peaks identified caudal type homeobox 2 (CDX2) as a key activating transcription factor in HIO, but not in monolayer cultures of Caco2. However, the CDX2 motif becomes overrepresented in open chromatin from Caco2 cysts, reinforcing the importance of this factor in intestinal epithelial differentiation and function. Intersection of the HIO and Caco2 transcriptomes further showed functional overlap in pathways of ion transport and tight junction integrity, among others. These data contribute to understanding human intestinal organoid biology.
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Affiliation(s)
- Shiyi Yin
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - Greeshma Ray
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland Ohio
| | - Jenny L Kerschner
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - Shuyu Hao
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - Aura Perez
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - Mitchell L Drumm
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - James A Browne
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - Shih-Hsing Leir
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
| | - Michelle Longworth
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland Ohio
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland Ohio
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22
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Sharma N, Cutting GR. The genetics and genomics of cystic fibrosis. J Cyst Fibros 2019; 19 Suppl 1:S5-S9. [PMID: 31879237 DOI: 10.1016/j.jcf.2019.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 02/07/2023]
Abstract
Genetics is the branch of biology concerned with study of individual genes and how they work whereas genomics is involved with the analysis of all genes and their interactions. Both of these approaches have been applied extensively to CF. Identification of the CFTR gene initiated the dissection of CF genetics at the molecular level. Subsequently, thousands of variants were found in the gene and the functional consequences of a subset have been studied in detail. The completion of the human genome ushered in a new phase of study where the role of genes beyond CFTR could be evaluated for their contribution to the severity of CF. This will be a brief overview of the contribution of these complementary methods to our understanding of CF pathogenesis.
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Affiliation(s)
- N Sharma
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - G R Cutting
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America.
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23
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Swahn H, Sabith Ebron J, Lamar K, Yin S, Kerschner JL, NandyMazumdar M, Coppola C, Mendenhall EM, Leir S, Harris A. Coordinate regulation of ELF5 and EHF at the chr11p13 CF modifier region. J Cell Mol Med 2019; 23:7726-7740. [PMID: 31557407 PMCID: PMC6815777 DOI: 10.1111/jcmm.14646] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/02/2019] [Accepted: 08/10/2019] [Indexed: 12/21/2022] Open
Abstract
E74-like factor 5 (ELF5) and ETS-homologous factor (EHF) are epithelial selective ETS family transcription factors (TFs) encoded by genes at chr11p13, a region associated with cystic fibrosis (CF) lung disease severity. EHF controls many key processes in lung epithelial function so its regulatory mechanisms are important. Using CRISPR/Cas9 technology, we removed three key cis-regulatory elements (CREs) from the chr11p13 region and also activated multiple open chromatin sites with CRISPRa in airway epithelial cells. Deletion of the CREs caused subtle changes in chromatin architecture and site-specific increases in EHF and ELF5. CRISPRa had most effect on ELF5 transcription. ELF5 levels are low in airway cells but higher in LNCaP (prostate) and T47D (breast) cancer cells. ATAC-seq in these lines revealed novel peaks of open chromatin at the 5' end of chr11p13 associated with an expressed ELF5 gene. Furthermore, 4C-seq assays identified direct interactions between the active ELF5 promoter and sites within the EHF locus, suggesting coordinate regulation between these TFs. ChIP-seq for ELF5 in T47D cells revealed ELF5 occupancy within EHF introns 1 and 6, and siRNA-mediated depletion of ELF5 enhanced EHF expression. These results define a new role for ELF5 in lung epithelial biology.
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Affiliation(s)
- Hannah Swahn
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Jey Sabith Ebron
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Kay‐Marie Lamar
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Shiyi Yin
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Jenny L. Kerschner
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Monali NandyMazumdar
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Candice Coppola
- Department of Biological SciencesUniversity of Alabama in HuntsvilleHuntsvilleALUSA
| | - Eric M. Mendenhall
- Department of Biological SciencesUniversity of Alabama in HuntsvilleHuntsvilleALUSA
| | - Shih‐Hsing Leir
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
| | - Ann Harris
- Department of Genetics and Genome SciencesCase Western Reserve UniversityClevelandOHUSA
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24
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Yang R, Browne JA, Eggener SE, Leir SH, Harris A. A novel transcriptional network for the androgen receptor in human epididymis epithelial cells. Mol Hum Reprod 2019; 24:433-443. [PMID: 30016502 DOI: 10.1093/molehr/gay029] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/14/2018] [Indexed: 12/31/2022] Open
Abstract
STUDY QUESTION What is the transcriptional network governed by the androgen receptor (AR) in human epididymis epithelial (HEE) cells from the caput region and if the network is tissue-specific, how is this achieved? SUMMARY ANSWER About 200 genes are differentially expressed in the caput HEE cells after AR activation; the AR transcriptional network is tissue-specific and may be mediated in part by distinct AR co-factors including CAAT-enhancer binding protein beta (CEBPB) and runt-related transcription factor 1 (RUNX1). WHAT IS KNOWN ALREADY Little is known about the AR transcriptional program genome wide in HEE cells, nor its co-factors in those cells. AR has been best studied in the prostate gland epithelium and prostate cancer cell lines, due to the important role of this factor in prostate cancer. However AR-associated differentially expressed genes (DEGs) and AR co-factors have not yet been compared between human epididymis and prostate epithelial cells. STUDY DESIGN, SIZE, DURATION Caput HEE cells from two donors were exposed to the synthetic androgen R1881 at 1 nM for 12-16 h after 72 h of hormone starvation. PARTICIPANTS/MATERIALS, SETTING, METHODS Chromatin was prepared from R1881-treated and vehicle control HEE cells. AR-associated chromatin was purified by chromatin immunoprecipitation (ChIP) and AR occupancy genome wide was revealed by deep sequencing (ChIP-seq). Two independent biological replicates were performed. Total RNA was prepared from R1881 and control-treated HEE cells and gene expression profiles were documented by RNA-seq. The interaction of the potential novel AR co-factors CEBPB and RUNX1, identified through in-silico motif analysis of AR ChIP-seq data, was examined by ChIP-qPCR after siRNA-mediated depletion of each co-factor individually or simultaneously. MAIN RESULTS AND THE ROLE OF CHANCE The results identify about 200 genes that are differentially expressed (DEGs) in HEE cells after AR activation. Some of these DEGs show occupancy of AR at their promoters or cis-regulatory elements suggesting direct regulation. However, there is little overlap in AR-associated DEGs between HEE and prostate epithelial cells. Inspection of over-represented motifs in AR ChIP-seq peaks identified CEBPB and RUNX1 as potential co-factors, with no evidence for FOXA1, which is an important co-factor in the prostate epithelium. CEBPB and RUNX1 ChIP-seq in HEE cells showed that both these factors often occupied AR-binding sites, though rarely simultaneously. Further analysis at a single AR-regulated locus (FK506-binding protein 5, FKPB5) suggests that CEBPB may be a co-activator. These data suggest a novel AR transcriptional network governs differentiated functions of the human epididymis epithelium. LARGE SCALE DATA AR ChIP-seq and RNA-seq data are deposited at GEO: GSE109063. LIMITATIONS, REASONS FOR CAUTION There is substantial donor-to-donor variation in primary HEE cells cultures. We applied stringent statistical tests with a false discovery rate (FDR) of 0.1% for ChIP-seq and standard pipelines for RNA-seq so it is possible that we have missed some AR-regulated genes that are important in caput epididymis function. WIDER IMPLICATIONS OF THE FINDINGS Our data suggest that a novel AR transcriptional network governs differentiated functions of the human epididymis epithelium. Since this cell layer has a critical role in normal sperm maturation, the results are of broader significance in understanding the mechanisms underlying the maintenance of fertility in men. STUDY FUNDING/COMPETING INTERESTS This work was funded by the National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Development: R01 HD068901 (PI: Harris). The authors have no competing interests to declare.
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Affiliation(s)
- Rui Yang
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, USA.,Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - James A Browne
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, USA.,Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Scott E Eggener
- Section of Urology, University of Chicago Medical Center, Chicago, IL, USA
| | - Shih-Hsing Leir
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, USA.,Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Ann Harris
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, USA.,Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, USA
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25
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Larson ED, Magno JPM, Steritz MJ, Llanes EGDV, Cardwell J, Pedro M, Roberts TB, Einarsdottir E, Rosanes RAQ, Greenlee C, Santos RAP, Yousaf A, Streubel SO, Santos ATR, Ruiz AG, Lagrana-Villagracia SM, Ray D, Yarza TKL, Scholes MA, Anderson CB, Acharya A, Gubbels SP, Bamshad MJ, Cass SP, Lee NR, Shaikh RS, Nickerson DA, Mohlke KL, Prager JD, Cruz TLG, Yoon PJ, Abes GT, Schwartz DA, Chan AL, Wine TM, Cutiongco-de la Paz EM, Friedman N, Kechris K, Kere J, Leal SM, Yang IV, Patel JA, Tantoco MLC, Riazuddin S, Chan KH, Mattila PS, Reyes-Quintos MRT, Ahmed ZM, Jenkins HA, Chonmaitree T, Hafrén L, Chiong CM, Santos-Cortez RLP. A2ML1 and otitis media: novel variants, differential expression, and relevant pathways. Hum Mutat 2019; 40:1156-1171. [PMID: 31009165 DOI: 10.1002/humu.23769] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 02/26/2019] [Accepted: 04/18/2019] [Indexed: 12/16/2022]
Abstract
A genetic basis for otitis media is established, however, the role of rare variants in disease etiology is largely unknown. Previously a duplication variant within A2ML1 was identified as a significant risk factor for otitis media in an indigenous Filipino population and in US children. In this report exome and Sanger sequencing was performed using DNA samples from the indigenous Filipino population, Filipino cochlear implantees, US probands, Finnish, and Pakistani families with otitis media. Sixteen novel, damaging A2ML1 variants identified in otitis media patients were rare or low-frequency in population-matched controls. In the indigenous population, both gingivitis and A2ML1 variants including the known duplication variant and the novel splice variant c.4061 + 1 G>C were independently associated with otitis media. Sequencing of salivary RNA samples from indigenous Filipinos demonstrated lower A2ML1 expression according to the carriage of A2ML1 variants. Sequencing of additional salivary RNA samples from US patients with otitis media revealed differentially expressed genes that are highly correlated with A2ML1 expression levels. In particular, RND3 is upregulated in both A2ML1 variant carriers and high-A2ML1 expressors. These findings support a role for A2ML1 in keratinocyte differentiation within the middle ear as part of otitis media pathology and the potential application of ROCK inhibition in otitis media.
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Affiliation(s)
- Eric D Larson
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Jose Pedrito M Magno
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines
| | - Matthew J Steritz
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Erasmo Gonzalo D V Llanes
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Jonathan Cardwell
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Melquiadesa Pedro
- Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Tori Bootpetch Roberts
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Elisabet Einarsdottir
- Folkhälsan Institute of Genetics and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Rose Anne Q Rosanes
- Department of Community Dentistry, College of Dentistry, University of the Philippines Manila, Manila, Philippines
| | - Christopher Greenlee
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | | | - Ayesha Yousaf
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Sven-Olrik Streubel
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | | | - Amanda G Ruiz
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Sheryl Mae Lagrana-Villagracia
- Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Dylan Ray
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Talitha Karisse L Yarza
- Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Newborn Hearing Screening Reference Center, University of the Philippines Manila - National Institutes of Health (NIH), Manila, Philippines
| | - Melissa A Scholes
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Catherine B Anderson
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Anushree Acharya
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Samuel P Gubbels
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Michael J Bamshad
- Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Stephen P Cass
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Nanette R Lee
- USC-Office of Population Studies Foundation, Inc. and Department of Anthropology, Sociology and History, University of San Carlos, Cebu, Philippines
| | - Rehan S Shaikh
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Deborah A Nickerson
- Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Karen L Mohlke
- Department of Genetics, University of North Carolina, Chapel Hill, North Carolina
| | - Jeremy D Prager
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Teresa Luisa G Cruz
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Patricia J Yoon
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Generoso T Abes
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - David A Schwartz
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Abner L Chan
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Todd M Wine
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Eva Maria Cutiongco-de la Paz
- Philippine Genome Center, University of the Philippines, Quezon City, Philippines.,University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Norman Friedman
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Katerina Kechris
- Department of Biostatistics and Bioinformatics, Colorado School of Public Health, Aurora, Colorado
| | - Juha Kere
- Folkhälsan Institute of Genetics and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Suzanne M Leal
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Ivana V Yang
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Janak A Patel
- Division of Infectious Diseases, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - Ma Leah C Tantoco
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Saima Riazuddin
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, Maryland
| | - Kenny H Chan
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Petri S Mattila
- Department of Otorhinolaryngology, Head & Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Maria Rina T Reyes-Quintos
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Newborn Hearing Screening Reference Center, University of the Philippines Manila - National Institutes of Health (NIH), Manila, Philippines.,University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Zubair M Ahmed
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, Maryland
| | - Herman A Jenkins
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Tasnee Chonmaitree
- Division of Infectious Diseases, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - Lena Hafrén
- Department of Otorhinolaryngology, Head & Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Charlotte M Chiong
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Newborn Hearing Screening Reference Center, University of the Philippines Manila - National Institutes of Health (NIH), Manila, Philippines
| | - Regie Lyn P Santos-Cortez
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Center for Children's Surgery, Children's Hospital Colorado, Aurora, Colorado
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26
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Browne JA, Leir SH, Yin S, Harris A. Transcriptional networks in the human epididymis. Andrology 2019; 7:741-747. [PMID: 31050198 DOI: 10.1111/andr.12629] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/26/2018] [Accepted: 03/29/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND The epithelial lining of the human epididymis is critical for sperm maturation. This process requires distinct specialized functions in the head, body, and tail of the duct. These region-specific properties are maintained by distinct gene expression profiles which are governed by transcription factor networks, non-coding RNAs, and other factors. MATERIALS AND METHODS We used genome-wide protocols including DNase-seq, RNA-seq and ChIP-seq to characterize open (active) chromatin, the transcriptome and occupancy of specific transcription factors (TFs) respectively, in caput, corpus, and cauda segments of adult human epididymis tissue and primary human epididymis epithelial (HEE) cell cultures derived from them. RNA-seq following TF depletion or activation, combined with gene ontology analysis also determined TF targets. RESULTS Among regional differentially expressed transcripts were epithelial-selective transcription factors (TFs), microRNAs, and antiviral response genes. Caput-enriched TFs included hepatocyte nuclear factor 1 (HNF1) and the androgen receptor (AR), both of which were also predicted to occupy cis-regulatory elements identified as open chromatin in HEE cells. HNF1 targets were identified genome-wide using ChIP-seq, in HEE cells. Next, siRNA-mediated depletion of HNF1 revealed a pivotal role for this TF in coordinating epithelial water and solute transport in caput epithelium. The importance of AR in HEE cells was shown by AR ChIP-seq, and by RNA-seq after synthetic androgen (R1881) treatment. AR has a distinct transcriptional program in the HEE cells and likely recruits different co-factors (RUNX1 and CEBPβ) in comparison to those used in prostate epithelium. DISCUSSION AND CONCLUSION Our data identify many transcription factors that regulate the development and differentiation of HEE cells. Moreover, a comparison between immature and adult HEE cells showed key TFs in the transition to fully differentiated function of this epithelium. These data may help identify new targets to treat male infertility and have the potential to open new avenues for male contraception.
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Affiliation(s)
- J A Browne
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - S-H Leir
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - S Yin
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - A Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
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27
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Polineni D, Dang H, Gallins PJ, Jones LC, Pace RG, Stonebraker JR, Commander LA, Krenicky JE, Zhou YH, Corvol H, Cutting GR, Drumm ML, Strug LJ, Boyle MP, Durie PR, Chmiel JF, Zou F, Wright FA, O'Neal WK, Knowles MR. Airway Mucosal Host Defense Is Key to Genomic Regulation of Cystic Fibrosis Lung Disease Severity. Am J Respir Crit Care Med 2019; 197:79-93. [PMID: 28853905 DOI: 10.1164/rccm.201701-0134oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
RATIONALE The severity of cystic fibrosis (CF) lung disease varies widely, even for Phe508del homozygotes. Heritability studies show that more than 50% of the variability reflects non-cystic fibrosis transmembrane conductance regulator (CFTR) genetic variation; however, the full extent of the pertinent genetic variation is not known. OBJECTIVES We sought to identify novel CF disease-modifying mechanisms using an integrated approach based on analyzing "in vivo" CF airway epithelial gene expression complemented with genome-wide association study (GWAS) data. METHODS Nasal mucosal RNA from 134 patients with CF was used for RNA sequencing. We tested for associations of transcriptomic (gene expression) data with a quantitative phenotype of CF lung disease severity. Pathway analysis of CF GWAS data (n = 5,659 patients) was performed to identify novel pathways and assess the concordance of genomic and transcriptomic data. Association of gene expression with previously identified CF GWAS risk alleles was also tested. MEASUREMENTS AND MAIN RESULTS Significant evidence of heritable gene expression was identified. Gene expression pathways relevant to airway mucosal host defense were significantly associated with CF lung disease severity, including viral infection, inflammation/inflammatory signaling, lipid metabolism, apoptosis, ion transport, Phe508del CFTR processing, and innate immune responses, including HLA (human leukocyte antigen) genes. Ion transport and CFTR processing pathways, as well as HLA genes, were identified across differential gene expression and GWAS signals. CONCLUSIONS Transcriptomic analyses of CF airway epithelia, coupled to genomic (GWAS) analyses, highlight the role of heritable host defense variation in determining the pathophysiology of CF lung disease. The identification of these pathways provides opportunities to pursue targeted interventions to improve CF lung health.
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Affiliation(s)
- Deepika Polineni
- 1 Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas.,2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Hong Dang
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Paul J Gallins
- 3 Bioinformatics Research Center, Department of Biological Sciences
| | - Lisa C Jones
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Rhonda G Pace
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Jaclyn R Stonebraker
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Leah A Commander
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Jeanne E Krenicky
- 4 Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Yi-Hui Zhou
- 3 Bioinformatics Research Center, Department of Biological Sciences
| | - Harriet Corvol
- 5 Pediatric Pulmonary Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Trousseau, Institut National de la Santé et la Recherche Médicale (INSERM) U938, Paris, France.,6 Sorbonne Universités, Université Pierre et Marie Curie (UPMC), Paris 6, Paris, France
| | - Garry R Cutting
- 7 McKusick-Nathans Institute of Genetic Medicine.,8 Department of Pediatrics, and
| | - Mitchell L Drumm
- 4 Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Lisa J Strug
- 9 Program in Genetics and Genome Biology.,10 Division of Biostatistics, Dalla Lana School of Public Health, and
| | - Michael P Boyle
- 11 Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Peter R Durie
- 12 Physiology and Experimental Medicine Research Program, and.,13 Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, Ontario, Canada; and.,14 Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - James F Chmiel
- 4 Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Fei Zou
- 15 Department of Biostatistics, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Fred A Wright
- 16 Department of Statistics, and.,17 Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina
| | - Wanda K O'Neal
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
| | - Michael R Knowles
- 2 Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, School of Medicine, and
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28
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Swahn H, Harris A. Cell-Selective Regulation of CFTR Gene Expression: Relevance to Gene Editing Therapeutics. Genes (Basel) 2019; 10:E235. [PMID: 30893953 PMCID: PMC6471542 DOI: 10.3390/genes10030235] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 12/19/2022] Open
Abstract
The cystic fibrosis transmembrane conductance regulator (CFTR) gene is an attractive target for gene editing approaches, which may yield novel therapeutic approaches for genetic diseases such as cystic fibrosis (CF). However, for gene editing to be effective, aspects of the three-dimensional (3D) structure and cis-regulatory elements governing the dynamic expression of CFTR need to be considered. In this review, we focus on the higher order chromatin organization required for normal CFTR locus function, together with the complex mechanisms controlling expression of the gene in different cell types impaired by CF pathology. Across all cells, the CFTR locus is organized into an invariant topologically associated domain (TAD) established by the architectural proteins CCCTC-binding factor (CTCF) and cohesin complex. Additional insulator elements within the TAD also recruit these factors. Although the CFTR promoter is required for basal levels of expression, cis-regulatory elements (CREs) in intergenic and intronic regions are crucial for cell-specific and temporal coordination of CFTR transcription. These CREs are recruited to the promoter through chromatin looping mechanisms and enhance cell-type-specific expression. These features of the CFTR locus should be considered when designing gene-editing approaches, since failure to recognize their importance may disrupt gene expression and reduce the efficacy of therapies.
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Affiliation(s)
- Hannah Swahn
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44067, USA.
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44067, USA.
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29
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Abstract
PURPOSE OF REVIEW To compile data from the past 10 years regarding the role of modifying genes in cystic fibrosis (CF). RECENT FINDINGS CF is a model disease for understanding of the action of modifying genes. Although it is a monogenic (CFTR) autosomal recessive disease, CF presents with wide phenotypic variability. In CF, variability occurs with different intensity among patients by each organ, being organ-specific, resulting from the mutual interaction of environmental and genetic factors, including CFTR mutations and various other genes, most of which are associated with inflammatory processes. In individuals, using precision medicine, gene modification studies have revealed individualized responses to drugs depending on particular CFTR mutations and modifying genes, most of which are alternative ion channels. SUMMARY Studies of modifying genes in CF allow: understanding of clinical variability among patients with the same CFTR genotype; evaluation of precision medicine; understanding of environmental and genetic effects at the organ level; understanding the involvement of genetic variants in inflammatory responses; improvements in genetic counseling; understanding the involvement of genetic variants in inflammatory responses in lung diseases, such as asthma; and understanding the individuality of the person with the disease.
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30
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Liu J, Jiang W, Zhao K, Wang H, Zhou T, Bai W, Wang X, Zhao T, Huang C, Gao S, Qin T, Yu W, Yang B, Li X, Fu D, Tan W, Yang S, Ren H, Hao J. Tumoral EHF predicts the efficacy of anti-PD1 therapy in pancreatic ductal adenocarcinoma. J Exp Med 2019; 216:656-673. [PMID: 30733283 PMCID: PMC6400540 DOI: 10.1084/jem.20180749] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 11/05/2018] [Accepted: 12/18/2018] [Indexed: 12/12/2022] Open
Abstract
EHF transcriptionally inhibits the expressions of TGFβ1 and GM-CSF to decrease T reg cell and MDSC accumulation, making it a promising biomarker to evaluate the immune microenvironment in PDAC. EHF overexpression may improve the efficacy of checkpoint immunotherapy in PDAC. Pancreatic ductal adenocarcinoma (PDAC) is a highly immune-suppressive tumor with a low response rate to single checkpoint blockade therapy. ETS homologous factor (EHF) is a tumor suppressor in PDAC. Here, we report a novel function of EHF in pancreatic cancer immune microenvironment editing and efficacy prediction for anti-PD1 therapy. Our findings support that the deficiency of tumoral EHF induced the accumulation of regulatory T (T reg) cells and myeloid-derived suppressor cells (MDSCs) and a decrease in the number of tumor-infiltrating CD8+ T cells. Mechanistically, EHF deficiency induced the conversion and expansion of T reg cells and MDSCs through inhibiting tumor TGFβ1 and GM-CSF secretion. EHF suppressed the transcription of TGFB1 and CSF2 by directly binding to their promoters. Mice bearing EHF overexpression tumors exhibited significantly better response to anti-PD1 therapy than those with control tumors. Our findings delineate the immunosuppressive mechanism of EHF deficiency in PDAC and highlight that EHF overexpression may improve PDAC checkpoint immunotherapy.
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Affiliation(s)
- Jing Liu
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Department of Breast Oncoplastic Surgery, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, China
| | - Wenna Jiang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, China
| | - Kaili Zhao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Hongwei Wang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Tianxing Zhou
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Weiwei Bai
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Xiuchao Wang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Tiansuo Zhao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Chongbiao Huang
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Song Gao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Tai Qin
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Wenwen Yu
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Bo Yang
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Xin Li
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Danqi Fu
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Wei Tan
- Biosion, Inc., Jiangsu, China
| | - Shengyu Yang
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA
| | - He Ren
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Jihui Hao
- Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
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31
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Yoshida H, Lareau CA, Ramirez RN, Rose SA, Maier B, Wroblewska A, Desland F, Chudnovskiy A, Mortha A, Dominguez C, Tellier J, Kim E, Dwyer D, Shinton S, Nabekura T, Qi Y, Yu B, Robinette M, Kim KW, Wagers A, Rhoads A, Nutt SL, Brown BD, Mostafavi S, Buenrostro JD, Benoist C. The cis-Regulatory Atlas of the Mouse Immune System. Cell 2019; 176:897-912.e20. [PMID: 30686579 PMCID: PMC6785993 DOI: 10.1016/j.cell.2018.12.036] [Citation(s) in RCA: 251] [Impact Index Per Article: 50.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/26/2018] [Accepted: 12/20/2018] [Indexed: 01/08/2023]
Abstract
A complete chart of cis-regulatory elements and their dynamic activity is necessary to understand the transcriptional basis of differentiation and function of an organ system. We generated matched epigenome and transcriptome measurements in 86 primary cell types that span the mouse immune system and its differentiation cascades. This breadth of data enable variance components analysis that suggests that genes fall into two distinct classes, controlled by either enhancer- or promoter-driven logic, and multiple regression that connects genes to the enhancers that regulate them. Relating transcription factor (TF) expression to the genome-wide accessibility of their binding motifs classifies them as predominantly openers or closers of local chromatin accessibility, pinpointing specific cis-regulatory elements where binding of given TFs is likely functionally relevant, validated by chromatin immunoprecipitation sequencing (ChIP-seq). Overall, this cis-regulatory atlas provides a trove of information on transcriptional regulation through immune differentiation and a foundational scaffold to define key regulatory events throughout the immunological genome.
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Affiliation(s)
- Hideyuki Yoshida
- Department of Immunology, Harvard Medical School, Boston, MA, USA; YCI Laboratory for Immunological Transcriptomics, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | | | | | - Samuel A Rose
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Barbara Maier
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Aleksandra Wroblewska
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Fiona Desland
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Aleksey Chudnovskiy
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Arthur Mortha
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Julie Tellier
- The Walter and Eliza Hall Institute and Department of Medical Biology, Melbourne University, Parkville, VIC, Australia
| | - Edy Kim
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Boston, MA, USA
| | - Dan Dwyer
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Boston, MA, USA
| | | | - Tsukasa Nabekura
- Department of Microbiology and Immunology, UCSF, San Francisco, CA, USA
| | - YiLin Qi
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Bingfei Yu
- Department of Biological Sciences, UCSD, La Jolla, CA, USA
| | - Michelle Robinette
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Ki-Wook Kim
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Amy Wagers
- Joslin Diabetes Center, Boston, MA, USA; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA USA
| | - Andrew Rhoads
- Department of Immunology, Harvard Medical School, Boston, MA, USA
| | - Stephen L Nutt
- The Walter and Eliza Hall Institute and Department of Medical Biology, Melbourne University, Parkville, VIC, Australia
| | - Brian D Brown
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sara Mostafavi
- Department of Statistics and Department Medical Genetics, University of British Columbia, Vancouver, BC, Canada.
| | - Jason D Buenrostro
- Broad Institute of MIT and Harvard, Cambridge, MA, USA; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA USA.
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32
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Pezzulo AA, Tudas RA, Stewart CG, Buonfiglio LGV, Lindsay BD, Taft PJ, Gansemer ND, Zabner J. HSP90 inhibitor geldanamycin reverts IL-13- and IL-17-induced airway goblet cell metaplasia. J Clin Invest 2019; 129:744-758. [PMID: 30640172 PMCID: PMC6355221 DOI: 10.1172/jci123524] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/20/2018] [Indexed: 12/29/2022] Open
Abstract
Goblet cell metaplasia, a disabling hallmark of chronic lung disease, lacks curative treatments at present. To identify novel therapeutic targets for goblet cell metaplasia, we studied the transcriptional response profile of IL-13-exposed primary human airway epithelia in vitro and asthmatic airway epithelia in vivo. A perturbation-response profile connectivity approach identified geldanamycin, an inhibitor of heat shock protein 90 (HSP90) as a candidate therapeutic target. Our experiments confirmed that geldanamycin and other HSP90 inhibitors prevented IL-13-induced goblet cell metaplasia in vitro and in vivo. Geldanamycin also reverted established goblet cell metaplasia. Geldanamycin did not induce goblet cell death, nor did it solely block mucin synthesis or IL-13 receptor-proximal signaling. Geldanamycin affected the transcriptome of airway cells when exposed to IL-13, but not when exposed to vehicle. We hypothesized that the mechanism of action probably involves TGF-β, ERBB, or EHF, which would predict that geldanamycin would also revert IL-17-induced goblet cell metaplasia, a prediction confirmed by our experiments. Our findings suggest that persistent airway goblet cell metaplasia requires HSP90 activity and that HSP90 inhibitors will revert goblet cell metaplasia, despite active upstream inflammatory signaling. Moreover, HSP90 inhibitors may be a therapeutic option for airway diseases with goblet cell metaplasia of unknown mechanism.
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Affiliation(s)
- Alejandro A. Pezzulo
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Rosarie A. Tudas
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Carley G. Stewart
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | | | - Brian D. Lindsay
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
| | - Peter J. Taft
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Nicholas D. Gansemer
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Joseph Zabner
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
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O'Neal WK, Knowles MR. Cystic Fibrosis Disease Modifiers: Complex Genetics Defines the Phenotypic Diversity in a Monogenic Disease. Annu Rev Genomics Hum Genet 2018; 19:201-222. [DOI: 10.1146/annurev-genom-083117-021329] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In many respects, genetic studies in cystic fibrosis (CF) serve as a paradigm for a human Mendelian genetic success story. From recognition of the condition as a heritable pathological entity to implementation of personalized treatments based on genetic findings, this multistep pathway of progress has focused on the genetic underpinnings of CF clinical disease. Along this path was the recognition that not all CFTR gene mutations produce the same disease and the recognition of the complex, multifactorial nature of CF genotype–phenotype relationships. The non- CFTR genetic components (gene modifiers) that contribute to variation in phenotype are the focus of this review. A multifaceted approach involving candidate gene studies, genome-wide association studies, and gene expression studies has revealed significant gene modifiers for multiple CF phenotypes. The bold challenges for the future are to integrate the findings into our understanding of CF pathogenesis and to use the knowledge to develop novel therapies.
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Affiliation(s)
- Wanda K. O'Neal
- Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;,
| | - Michael R. Knowles
- Cystic Fibrosis/Pulmonary Research and Treatment Center, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA;,
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34
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Luk IY, Reehorst CM, Mariadason JM. ELF3, ELF5, EHF and SPDEF Transcription Factors in Tissue Homeostasis and Cancer. Molecules 2018; 23:molecules23092191. [PMID: 30200227 PMCID: PMC6225137 DOI: 10.3390/molecules23092191] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 02/07/2023] Open
Abstract
The epithelium-specific ETS (ESE) transcription factors (ELF3, ELF5, EHF and SPDEF) are defined by their highly conserved ETS DNA binding domain and predominant epithelial-specific expression profile. ESE transcription factors maintain normal cell homeostasis and differentiation of a number of epithelial tissues, and their genetic alteration and deregulated expression has been linked to the progression of several epithelial cancers. Herein we review the normal function of the ESE transcription factors, the mechanisms by which they are dysregulated in cancers, and the current evidence for their role in cancer progression. Finally, we discuss potential therapeutic strategies for targeting or reactivating these factors as a novel means of cancer treatment.
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Affiliation(s)
- Ian Y Luk
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria 3084, Australia.
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria 3086, Australia.
| | - Camilla M Reehorst
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria 3084, Australia.
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria 3086, Australia.
| | - John M Mariadason
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria 3084, Australia.
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria 3086, Australia.
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35
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Strug LJ, Stephenson AL, Panjwani N, Harris A. Recent advances in developing therapeutics for cystic fibrosis. Hum Mol Genet 2018; 27:R173-R186. [PMID: 30060192 PMCID: PMC6061831 DOI: 10.1093/hmg/ddy188] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 05/07/2018] [Accepted: 05/10/2018] [Indexed: 12/23/2022] Open
Abstract
Despite hope that a cure was imminent when the causative gene was cloned nearly 30 years ago, cystic fibrosis (CF [MIM: 219700]) remains a life-shortening disease affecting more than 70 000 individuals worldwide. However, within the last 6 years the Food and Drug Administration's approval of Ivacaftor, the first drug that corrects the defective cystic fibrosis transmembrane conductance regulator protein [CFTR (MIM: 602421)] in patients with the G551D mutation, marks a watershed in the development of novel therapeutics for this devastating disease. Here we review recent progress in diverse research areas, which all focus on curing CF at the genetic, biochemical or physiological level. In the near future it seems probable that development of mutation-specific therapies will be the focus, since it is unlikely that any one approach will be efficient in correcting the more than 2000 disease-associated variants. We discuss the new drugs and combinations of drugs that either enhance delivery of misfolded CFTR protein to the cell membrane, where it functions as an ion channel, or that activate channel opening. Next we consider approaches to correct the causative genetic lesion at the DNA or RNA level, through repressing stop mutations and nonsense-mediated decay, modulating splice mutations, fixing errors by gene editing or using novel routes to gene replacement. Finally, we explore how modifier genes, loci elsewhere in the genome that modify CF disease severity, may be used to restore a normal phenotype. Progress in all of these areas has been dramatic, generating enthusiasm that CF may soon become a broadly treatable disease.
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Affiliation(s)
- Lisa J Strug
- Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Anne L Stephenson
- Department of Respirology, Adult Cystic Fibrosis Program, St. Michael’s Hospital, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Naim Panjwani
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Ann Harris
- Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
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36
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A transcription factor network represses CFTR gene expression in airway epithelial cells. Biochem J 2018; 475:1323-1334. [PMID: 29572268 DOI: 10.1042/bcj20180044] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/19/2018] [Accepted: 03/22/2018] [Indexed: 02/06/2023]
Abstract
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene cause the inherited disorder cystic fibrosis (CF). Lung disease is the major cause of CF morbidity, though CFTR expression levels are substantially lower in the airway epithelium than in pancreatic duct and intestinal epithelia, which also show compromised function in CF. Recently developed small molecule therapeutics for CF are highly successful for one specific CFTR mutation and have a positive impact on others. However, the low abundance of CFTR transcripts in the airway limits the opportunity for drugs to correct the defective substrate. Elucidation of the transcriptional mechanisms for the CFTR locus has largely focused on intragenic and intergenic tissue-specific enhancers and their activating trans-factors. Here, we investigate whether the low CFTR levels in the airway epithelium result from the recruitment of repressive proteins directly to the locus. Using an siRNA screen to deplete ∼1500 transcription factors (TFs) and associated regulatory proteins in Calu-3 lung epithelial cells, we identified nearly 40 factors that upon depletion elevated CFTR mRNA levels more than 2-fold. A subset of these TFs was validated in primary human bronchial epithelial cells. Among the strongest repressors of airway expression of CFTR were Krüppel-like factor 5 and Ets homologous factor, both of which have pivotal roles in the airway epithelium. Depletion of these factors, which are both recruited to an airway-selective cis-regulatory element at -35 kb from the CFTR promoter, improved CFTR production and function, thus defining novel therapeutic targets for enhancement of CFTR.
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37
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Gillen AE, Yang R, Cotton CU, Perez A, Randell SH, Leir SH, Harris A. Molecular characterization of gene regulatory networks in primary human tracheal and bronchial epithelial cells. J Cyst Fibros 2018; 17:444-453. [PMID: 29459038 DOI: 10.1016/j.jcf.2018.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/26/2018] [Accepted: 01/27/2018] [Indexed: 10/18/2022]
Abstract
BACKGROUND Robust methods to culture primary airway epithelial cells were developed several decades ago and these cells provide the model of choice to investigate many diseases of the human lung. However, the molecular signature of cells from different regions of the airway epithelium has not been well characterized. METHODS We utilize DNase-seq and RNA-seq to examine the molecular signatures of primary cells derived from human tracheal and bronchial tissues, as well as healthy and diseased (cystic fibrosis (CF)) donor lung tissue. RESULTS Our data reveal an airway cell signature that is divergent from other epithelial cell types and from common airway epithelial cell lines. The differences between tracheal and bronchial cells are clearly evident as are common regulatory features. Only minor variation is seen between bronchial cells from healthy or CF donors. CONCLUSIONS These data are a valuable resource for functional genomics analysis of airway epithelial tissues in human disease.
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Affiliation(s)
- Austin E Gillen
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, 60614, United States; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, United States
| | - Rui Yang
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, 60614, United States; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, United States
| | - Calvin U Cotton
- Departments of Pediatrics, Physiology and Biophysics, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Aura Perez
- Departments of Pediatrics, Physiology and Biophysics, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Scott H Randell
- Marsico Lung Institute, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, NC 27599, United States
| | - Shih-Hsing Leir
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, 60614, United States; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, United States; Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Ann Harris
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL, 60614, United States; Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, United States; Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44106, United States.
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38
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Klein RH, Hu W, Kashgari G, Lin Z, Nguyen T, Doan M, Andersen B. Characterization of enhancers and the role of the transcription factor KLF7 in regulating corneal epithelial differentiation. J Biol Chem 2017; 292:18937-18950. [PMID: 28916725 DOI: 10.1074/jbc.m117.793117] [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: 04/25/2017] [Revised: 09/11/2017] [Indexed: 02/01/2023] Open
Abstract
During tissue development, transcription factors bind regulatory DNA regions called enhancers, often located at great distances from the genes they regulate, to control gene expression. The enhancer landscape during embryonic stem cell differentiation has been well characterized. By contrast, little is known about the shared and unique enhancer regulatory mechanisms in different ectodermally derived epithelial cells. Here we use ChIP sequencing (ChIP-seq) to identify domains enriched for the histone marks histone H3 lysine 4 trimethylation, histone H3 lysine 4 monomethylation, and histone H3 lysine 27 acetylation (H3K4me3, H3K4me1, and H3K27ac) and define, for the first time, the super enhancers and typical enhancers active in primary human corneal epithelial cells. We show that regulatory regions are often shared between cell types of the ectodermal lineage and that corneal epithelial super enhancers are already marked as potential regulatory domains in embryonic stem cells. Kruppel-like factor (KLF) motifs were enriched in corneal epithelial enhancers, consistent with the important roles of KLF4 and KLF5 in promoting corneal epithelial differentiation. We now show that the Kruppel family member KLF7 promotes the corneal progenitor cell state; on many genes, KLF7 antagonized the corneal differentiation-promoting KLF4. Furthermore, we found that two SNPs linked previously to corneal diseases, astigmatism, and Stevens-Johnson syndrome fall within corneal epithelial enhancers and alter their activity by disrupting transcription factor motifs that overlap these SNPs. Taken together, our work defines regulatory enhancers in corneal epithelial cells, highlights global gene-regulatory relationships shared among different epithelial cells, identifies a role for KLF7 as a KLF4 antagonist in corneal epithelial cell differentiation, and explains how two SNPs may contribute to corneal diseases.
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Affiliation(s)
- Rachel Herndon Klein
- From the Departments of Biological Chemistry and.,Institute for Genomics and Bioinformatics, University of California, Irvine, California 92697
| | - William Hu
- From the Departments of Biological Chemistry and
| | | | - Ziguang Lin
- From the Departments of Biological Chemistry and
| | - Tuyen Nguyen
- From the Departments of Biological Chemistry and.,Institute for Genomics and Bioinformatics, University of California, Irvine, California 92697
| | - Michael Doan
- From the Departments of Biological Chemistry and
| | - Bogi Andersen
- From the Departments of Biological Chemistry and .,Institute for Genomics and Bioinformatics, University of California, Irvine, California 92697.,Medicine, Division of Endocrinology, and
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39
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Stolzenburg LR, Yang R, Kerschner JL, Fossum S, Xu M, Hoffmann A, Lamar KM, Ghosh S, Wachtel S, Leir SH, Harris A. Regulatory dynamics of 11p13 suggest a role for EHF in modifying CF lung disease severity. Nucleic Acids Res 2017; 45:8773-8784. [PMID: 28549169 PMCID: PMC5587731 DOI: 10.1093/nar/gkx482] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 05/01/2017] [Accepted: 05/17/2017] [Indexed: 02/02/2023] Open
Abstract
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene cause cystic fibrosis (CF), but are not good predictors of lung phenotype. Genome-wide association studies (GWAS) previously identified additional genomic sites associated with CF lung disease severity. One of these, at chromosome 11p13, is an intergenic region between Ets homologous factor (EHF) and Apaf-1 interacting protein (APIP). Our goal was to determine the functional significance of this region, which being intergenic is probably regulatory. To identify cis-acting elements, we used DNase-seq and H3K4me1 and H3K27Ac ChIP-seq to map open and active chromatin respectively, in lung epithelial cells. Two elements showed strong enhancer activity for the promoters of EHF and the 5' adjacent gene E47 like ETS transcription factor 5 (ELF5) in reporter gene assays. No enhancers of the APIP promoter were found. Circular chromosome conformation capture (4C-seq) identified direct physical interactions of elements within 11p13. This confirmed the enhancer-promoter associations, identified additional interacting elements and defined topologically associating domain (TAD) boundaries, enriched for CCCTC-binding factor (CTCF). No strong interactions were observed with the APIP promoter, which lies outside the main TAD encompassing the GWAS signal. These results focus attention on the role of EHF in modifying CF lung disease severity.
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Affiliation(s)
- Lindsay R. Stolzenburg
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Rui Yang
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Jenny L. Kerschner
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44016, USA
| | - Sara Fossum
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Matthew Xu
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Andrew Hoffmann
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Kay-Marie Lamar
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44016, USA
| | - Sujana Ghosh
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Sarah Wachtel
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Shih-Hsing Leir
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44016, USA
| | - Ann Harris
- Human Molecular Genetics Program, Lurie Children's Research Center, Chicago, IL 60614, USA
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44016, USA
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