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Sekiya M, Ma Y, Kainoh K, Saito K, Yamazaki D, Tsuyuzaki T, Chen W, Adi Putri PIP, Ohno H, Miyamoto T, Takeuchi Y, Murayama Y, Sugano Y, Osaki Y, Iwasaki H, Yahagi N, Suzuki H, Motomura K, Matsuzaka T, Murata K, Mizuno S, Takahashi S, Shimano H. Loss of CtBP2 may be a mechanistic link between metabolic derangements and progressive impairment of pancreatic β cell function. Cell Rep 2023; 42:112914. [PMID: 37557182 DOI: 10.1016/j.celrep.2023.112914] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/19/2023] [Accepted: 07/16/2023] [Indexed: 08/11/2023] Open
Abstract
The adaptive increase in insulin secretion in early stages of obesity serves as a safeguard mechanism to maintain glucose homeostasis that cannot be sustained, and the eventual decompensation of β cells is a key event in the pathogenesis of diabetes. Here we describe a crucial system orchestrated by a transcriptional cofactor CtBP2. In cultured β cells, insulin gene expression is coactivated by CtBP2. Global genomic mapping of CtBP2 binding sites identifies a key interaction between CtBP2 and NEUROD1 through which CtBP2 decompacts chromatin in the insulin gene promoter. CtBP2 expression is diminished in pancreatic islets in multiple mouse models of obesity, as well as human obesity. Pancreatic β cell-specific CtBP2-deficient mice manifest glucose intolerance with impaired insulin secretion. Our transcriptome analysis highlights an essential role of CtBP2 in the maintenance of β cell integrity. This system provides clues to the molecular basis in obesity and may be targetable to develop therapeutic approaches.
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Affiliation(s)
- Motohiro Sekiya
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan.
| | - Yang Ma
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Kenta Kainoh
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Kenji Saito
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Daichi Yamazaki
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Tomomi Tsuyuzaki
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Wanpei Chen
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Putu Indah Paramita Adi Putri
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Hiroshi Ohno
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Takafumi Miyamoto
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Yoshinori Takeuchi
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Yuki Murayama
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Yoko Sugano
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Yoshinori Osaki
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Hitoshi Iwasaki
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Naoya Yahagi
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Hiroaki Suzuki
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Kaori Motomura
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
| | - Takashi Matsuzaka
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan; Transborder Medical Research Center, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan
| | - Kazuya Murata
- Laboratory Animal Resource Center in Transborder Medical Research Center, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan
| | - Seiya Mizuno
- Laboratory Animal Resource Center in Transborder Medical Research Center, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center in Transborder Medical Research Center, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan
| | - Hitoshi Shimano
- Department of Endocrinology and Metabolism, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Ibaraki, Japan
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2
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Ding K, Jiang X, Wang Z, Zou L, Cui J, Li X, Shu C, Li A, Zhou J. JAC4 Inhibits EGFR-Driven Lung Adenocarcinoma Growth and Metastasis through CTBP1-Mediated JWA/AMPK/NEDD4L/EGFR Axis. Int J Mol Sci 2023; 24:ijms24108794. [PMID: 37240137 DOI: 10.3390/ijms24108794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/24/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
Lung adenocarcinoma (LUAD) is the most common lung cancer, with high mortality. As a tumor-suppressor gene, JWA plays an important role in blocking pan-tumor progression. JAC4, a small molecular-compound agonist, transcriptionally activates JWA expression both in vivo and in vitro. However, the direct target and the anticancer mechanism of JAC4 in LUAD have not been elucidated. Public transcriptome and proteome data sets were used to analyze the relationship between JWA expression and patient survival in LUAD. The anticancer activities of JAC4 were determined through in vitro and in vivo assays. The molecular mechanism of JAC4 was assessed by Western blot, quantitative real-time PCR (qRT-PCR), immunofluorescence (IF), ubiquitination assay, co-immunoprecipitation, and mass spectrometry (MS). Cellular thermal shift and molecule-docking assays were used for confirmation of the interactions between JAC4/CTBP1 and AMPK/NEDD4L. JWA was downregulated in LUAD tissues. Higher expression of JWA was associated with a better prognosis of LUAD. JAC4 inhibited LUAD cell proliferation and migration in both in-vitro and in-vivo models. Mechanistically, JAC4 increased the stability of NEDD4L through AMPK-mediated phosphorylation at Thr367. The WW domain of NEDD4L, an E3 ubiquitin ligase, interacted with EGFR, thus promoting ubiquitination at K716 and the subsequent degradation of EGFR. Importantly, the combination of JAC4 and AZD9191 synergistically inhibited the growth and metastasis of EGFR-mutant lung cancer in both subcutaneous and orthotopic NSCLC xenografts. Furthermore, direct binding of JAC4 to CTBP1 blocked nuclear translocation of CTBP1 and then removed its transcriptional suppression on the JWA gene. The small-molecule JWA agonist JAC4 plays a therapeutic role in EGFR-driven LUAD growth and metastasis through the CTBP1-mediated JWA/AMPK/NEDD4L/EGFR axis.
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Affiliation(s)
- Kun Ding
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Xuqian Jiang
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Zhangding Wang
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Lu Zou
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Jiahua Cui
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Xiong Li
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Chuanjun Shu
- Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Aiping Li
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Jianwei Zhou
- Department of Molecular Cell Biology & Toxicology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China
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3
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Bryzgalov LO, Korbolina EE, Merkulova TI. Exploring the Genetic Predisposition to Epigenetic Changes in Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24097955. [PMID: 37175659 PMCID: PMC10177989 DOI: 10.3390/ijms24097955] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/05/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
Alzheimer's disease (AD) is a prevalent type of dementia in elderly populations with a significant genetic component. The accumulating evidence suggests that AD involves a reconfiguration of the epigenetic landscape, including DNA methylation, post-translational modification of histone proteins, and chromatin remodeling. Along with environmental factors, individual specific genetic features play a considerable role in the formation of epigenetic architecture. In this study, we attempt to identify the non-coding regulatory SNPs (rSNPs) able to affect the epigenetic mechanisms in AD. To this end, the multi-omics approach is used. The GEO (Gene Expression Omnibus) available data (GSE153875) for AD patients and controls are integrated to reveal the rSNPs that display allele-specific features in both ChIP-seq profiles of four histone modifications and RNA-seq. Furthermore, we analyze the presence of rSNPs in the promoters of genes reported to be differentially expressed between AD and the normal brain (AD-related genes) and involved in epigenetic regulation according to the EpiFactors database. We also searched for the rSNPs in the promoters of the genes coding for transcription regulators of the identified AD-related genes. These regulators were selected based on the corresponding ChIP-seq peaks (ENCODE) in the promoter regions of these genes. Finally, we formed a panel of rSNPs localized to the promoters of genes that contribute to the epigenetic landscape in AD and, thus, to the genetic predisposition for this disease.
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Affiliation(s)
- Leonid O Bryzgalov
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Science, 10 Lavrentyeva Prospekt, 630090 Novosibirsk, Russia
- Vector-Best, 630117 Novosibirsk, Russia
| | - Elena E Korbolina
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Science, 10 Lavrentyeva Prospekt, 630090 Novosibirsk, Russia
| | - Tatiana I Merkulova
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Science, 10 Lavrentyeva Prospekt, 630090 Novosibirsk, Russia
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4
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Aoyagi T, Yoshino R, Mitsuta Y, Morita R, Harada R, Shigeta Y. Integrated In Silico Studies on the Role of Nicotinamide Adenine Dinucleotide (NADH) Binding in Activating C-Terminal Binding Protein 2 (CtBP2). CHEM LETT 2022. [DOI: 10.1246/cl.210548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Tsukasa Aoyagi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Ryunosuke Yoshino
- Transborder Medical Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Yuki Mitsuta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Rikuri Morita
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Ryuhei Harada
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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5
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Transcriptomics and Metabolomics Integration Reveals Redox-Dependent Metabolic Rewiring in Breast Cancer Cells. Cancers (Basel) 2021; 13:cancers13205058. [PMID: 34680207 PMCID: PMC8534001 DOI: 10.3390/cancers13205058] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 11/17/2022] Open
Abstract
Rewiring glucose metabolism toward aerobic glycolysis provides cancer cells with a rapid generation of pyruvate, ATP, and NADH, while pyruvate oxidation to lactate guarantees refueling of oxidized NAD+ to sustain glycolysis. CtPB2, an NADH-dependent transcriptional co-regulator, has been proposed to work as an NADH sensor, linking metabolism to epigenetic transcriptional reprogramming. By integrating metabolomics and transcriptomics in a triple-negative human breast cancer cell line, we show that genetic and pharmacological down-regulation of CtBP2 strongly reduces cell proliferation by modulating the redox balance, nucleotide synthesis, ROS generation, and scavenging. Our data highlight the critical role of NADH in controlling the oncogene-dependent crosstalk between metabolism and the epigenetically mediated transcriptional program that sustains energetic and anabolic demands in cancer cells.
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6
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Low CtBP2 expression is associated with a stem cell-like signature and adverse clinical outcome in childhood B-cell lymphoblastic leukemia. Leukemia 2021; 35:2684-2687. [PMID: 33580202 DOI: 10.1038/s41375-021-01151-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/04/2020] [Accepted: 01/22/2021] [Indexed: 11/08/2022]
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7
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Wu C, Ding X, Li Z, Huang Y, Xu Q, Zou R, Zhao M, Chang H, Jiang C, La X, Lin G, Li W, Xue L. CtBP modulates Snail-mediated tumor invasion in Drosophila. Cell Death Discov 2021; 7:202. [PMID: 34349099 PMCID: PMC8339073 DOI: 10.1038/s41420-021-00516-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/30/2021] [Accepted: 05/14/2021] [Indexed: 02/07/2023] Open
Abstract
Cancer is one of the most fatal diseases that threaten human health, whereas more than 90% mortality of cancer patients is caused by tumor metastasis, rather than the growth of primary tumors. Thus, how to effectively control or even reverse the migration of tumor cells is of great significance for cancer therapy. CtBP, a transcriptional cofactor displaying high expression in a variety of human cancers, has become one of the main targets for cancer prediction, diagnosis, and treatment. The roles of CtBP in promoting tumorigenesis have been well studied in vitro, mostly based on gain-of-function, while its physiological functions in tumor invasion and the underlying mechanism remain largely elusive. Snail (Sna) is a well-known transcription factor involved in epithelial-to-mesenchymal transition (EMT) and tumor invasion, yet the mechanism that regulates Sna activity has not been fully understood. Using Drosophila as a model organism, we found that depletion of CtBP or snail (sna) suppressed RasV12/lgl-/--triggered tumor growth and invasion, and disrupted cell polarity-induced invasive cell migration. In addition, loss of CtBP inhibits RasV12/Sna-induced tumor invasion and Sna-mediated invasive cell migration. Furthermore, both CtBP and Sna are physiologically required for developmental cell migration during thorax closure. Finally, Sna activates the JNK signaling and promotes JNK-dependent cell invasion. Given that CtBP physically interacts with Sna, our data suggest that CtBP and Sna may form a transcriptional complex that regulates JNK-dependent tumor invasion and cell migration in vivo.
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Affiliation(s)
- Chenxi Wu
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China.,College of Traditional Chinese Medicine, North China University of Science and Technology, 21 Bohai Road, Tangshan, 063210, China
| | - Xiang Ding
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Zhuojie Li
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Yuanyuan Huang
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Qian Xu
- College of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
| | - Rui Zou
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Mingyang Zhao
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Hong Chang
- College of Traditional Chinese Medicine, North China University of Science and Technology, 21 Bohai Road, Tangshan, 063210, China
| | - Chunhua Jiang
- College of Traditional Chinese Medicine, North China University of Science and Technology, 21 Bohai Road, Tangshan, 063210, China
| | - Xiaojin La
- College of Traditional Chinese Medicine, North China University of Science and Technology, 21 Bohai Road, Tangshan, 063210, China
| | - Gufa Lin
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Orthopaedic Department of Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Wenzhe Li
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
| | - Lei Xue
- The First Rehabilitation Hospital of Shanghai, Shanghai Key Laboratory of Signaling and Diseases Research, School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China. .,Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Zhuhai, Guangdong, 51900, China.
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8
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Vijayalingam S, Ezekiel UR, Xu F, Subramanian T, Geerling E, Hoelscher B, San K, Ganapathy A, Pemberton K, Tycksen E, Pinto AK, Brien JD, Beck DB, Chung WK, Gurnett CA, Chinnadurai G. Human iPSC-Derived Neuronal Cells From CTBP1-Mutated Patients Reveal Altered Expression of Neurodevelopmental Gene Networks. Front Neurosci 2020; 14:562292. [PMID: 33192249 PMCID: PMC7653094 DOI: 10.3389/fnins.2020.562292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/01/2020] [Indexed: 11/17/2022] Open
Abstract
A recurrent de novo mutation in the transcriptional corepressor CTBP1 is associated with neurodevelopmental disabilities in children (Beck et al., 2016, 2019; Sommerville et al., 2017). All reported patients harbor a single recurrent de novo heterozygous missense mutation (p.R342W) within the cofactor recruitment domain of CtBP1. To investigate the transcriptional activity of the pathogenic CTBP1 mutant allele in physiologically relevant human cell models, we generated induced pluripotent stem cells (iPSC) from the dermal fibroblasts derived from patients and normal donors. The transcriptional profiles of the iPSC-derived “early” neurons were determined by RNA-sequencing. Comparison of the RNA-seq data of the neurons from patients and normal donors revealed down regulation of gene networks involved in neurodevelopment, synaptic adhesion and anti-viral (interferon) response. Consistent with the altered gene expression patterns, the patient-derived neurons exhibited morphological and electrophysiological abnormalities, and susceptibility to viral infection. Taken together, our studies using iPSC-derived neuron models provide novel insights into the pathological activities of the CTBP1 p.R342W allele.
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Affiliation(s)
- S Vijayalingam
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Edward A. Doisy Research Center, St. Louis, MO, United States
| | - Uthayashanker R Ezekiel
- Department of Clinical Health Sciences, Doisy College of Health Science, Saint Louis University School of Medicine, Saint Louis, MO, United States
| | - Fenglian Xu
- Department of Biology and Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, St. Louis, MO, United States
| | - T Subramanian
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Edward A. Doisy Research Center, St. Louis, MO, United States
| | - Elizabeth Geerling
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Edward A. Doisy Research Center, St. Louis, MO, United States
| | - Brittany Hoelscher
- Department of Biology and Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, St. Louis, MO, United States
| | - KayKay San
- Department of Clinical Health Sciences, Doisy College of Health Science, Saint Louis University School of Medicine, Saint Louis, MO, United States
| | - Aravinda Ganapathy
- Department of Clinical Health Sciences, Doisy College of Health Science, Saint Louis University School of Medicine, Saint Louis, MO, United States
| | - Kyle Pemberton
- Department of Biology and Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, St. Louis, MO, United States
| | - Eric Tycksen
- McDonnell Genome Institute, Washington University School of Medicine, St. Louis, MO, United States
| | - Amelia K Pinto
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Edward A. Doisy Research Center, St. Louis, MO, United States
| | - James D Brien
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Edward A. Doisy Research Center, St. Louis, MO, United States
| | - David B Beck
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Wendy K Chung
- Department of Pediatrics and Medicine, Columbia University Medical Center, New York, NY, United States
| | - Christina A Gurnett
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, United States
| | - G Chinnadurai
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Edward A. Doisy Research Center, St. Louis, MO, United States
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9
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Gaglio D, Bonanomi M, Valtorta S, Bharat R, Ripamonti M, Conte F, Fiscon G, Righi N, Napodano E, Papa F, Raccagni I, Parker SJ, Cifola I, Camboni T, Paci P, Colangelo AM, Vanoni M, Metallo CM, Moresco RM, Alberghina L. Disruption of redox homeostasis for combinatorial drug efficacy in K-Ras tumors as revealed by metabolic connectivity profiling. Cancer Metab 2020; 8:22. [PMID: 33005401 PMCID: PMC7523077 DOI: 10.1186/s40170-020-00227-4] [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: 06/22/2020] [Accepted: 09/06/2020] [Indexed: 12/14/2022] Open
Abstract
Abstract Background Rewiring of metabolism induced by oncogenic K-Ras in cancer cells involves both glucose and glutamine utilization sustaining enhanced, unrestricted growth. The development of effective anti-cancer treatments targeting metabolism may be facilitated by the identification and rational combinatorial targeting of metabolic pathways. Methods We performed mass spectrometric metabolomics analysis in vitro and in vivo experiments to evaluate the efficacy of drugs and identify metabolic connectivity. Results We show that K-Ras-mutant lung and colon cancer cells exhibit a distinct metabolic rewiring, the latter being more dependent on respiration. Combined treatment with the glutaminase inhibitor CB-839 and the PI3K/aldolase inhibitor NVP-BKM120 more consistently reduces cell growth of tumor xenografts. Maximal growth inhibition correlates with the disruption of redox homeostasis, involving loss of reduced glutathione regeneration, redox cofactors, and a decreased connectivity among metabolites primarily involved in nucleic acid metabolism. Conclusions Our findings open the way to develop metabolic connectivity profiling as a tool for a selective strategy of combined drug repositioning in precision oncology.
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Affiliation(s)
- Daniela Gaglio
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Segrate, MI Italy.,ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy
| | - Marcella Bonanomi
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Silvia Valtorta
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Segrate, MI Italy.,ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Medicine and Surgery and Tecnomed Foundation, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
| | - Rohit Bharat
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Marilena Ripamonti
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Segrate, MI Italy.,ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy
| | - Federica Conte
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Institute for Systems Analysis and Computer Science "Antonio Ruberti", National Research Council, Rome, Italy
| | - Giulia Fiscon
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Institute for Systems Analysis and Computer Science "Antonio Ruberti", National Research Council, Rome, Italy
| | - Nicole Righi
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Elisabetta Napodano
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Segrate, MI Italy.,ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy
| | - Federico Papa
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Institute for Systems Analysis and Computer Science "Antonio Ruberti", National Research Council, Rome, Italy
| | - Isabella Raccagni
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Segrate, MI Italy.,ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Nuclear Medicine Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Seth J Parker
- Department of Bioengineering, University of California, San Diego, La Jolla, CA USA.,Moores Cancer Center, University of California, San Diego, La Jolla, CA USA
| | - Ingrid Cifola
- Institute for Biomedical Technologies (ITB), National Research Council (CNR), Segrate, Milan, Italy
| | - Tania Camboni
- Institute for Biomedical Technologies (ITB), National Research Council (CNR), Segrate, Milan, Italy
| | - Paola Paci
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Institute for Systems Analysis and Computer Science "Antonio Ruberti", National Research Council, Rome, Italy.,Department of Computer, Control and Management Engineering, Sapienza University of Rome, Rome, Italy
| | - Anna Maria Colangelo
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Marco Vanoni
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Christian M Metallo
- Department of Bioengineering, University of California, San Diego, La Jolla, CA USA.,Moores Cancer Center, University of California, San Diego, La Jolla, CA USA
| | - Rosa Maria Moresco
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Segrate, MI Italy.,ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Medicine and Surgery and Tecnomed Foundation, University of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
| | - Lilia Alberghina
- ISBE. IT/Centre of Systems Biology, Piazza della Scienza 4, 20126 Milan, Italy.,Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
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10
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Kanumuri R, Saravanan R, Pavithra V, Sundaram S, Rayala SK, Venkatraman G. Current trends and opportunities in targeting p21 activated kinase-1(PAK1) for therapeutic management of breast cancers. Gene 2020; 760:144991. [PMID: 32717309 DOI: 10.1016/j.gene.2020.144991] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/18/2020] [Accepted: 07/21/2020] [Indexed: 12/24/2022]
Abstract
Breast cancer is the most frequently diagnosed cancer in women worldwide. Identifying reliable biomarkers and druggable molecular targets pose to be a significant quest in breast cancer research. p21-activated kinase 1 (PAK1) is a serine/threonine kinase that direct cell motility, cytoskeletal remodelling, and has been shown to function as a downstream regulator for various cancer signalling cascades that promote cell proliferation, apoptosis deregulation and hasten mitotic abnormalities, resulting in tumor formation and progression. The heterogeneity and acquired drug resistance are important factors that challenge the treatment of breast cancer. p21-activated kinase 1 signalling is crucial for activation of the Ras/RAF/MEK/ERK, PI3K/Akt/mTOR and Wnt signalling cascades which regulate cell survival, cell cycle progression, differentiation, and proliferation. A study involving proteogenomics analysis on breast cancer tissues showed the PAK1 as outlier kinase. In addition to this, few outlier molecules were identified specific to subtypes of breast cancer. A few substrates of PAK1 in breast cancer are already known. In this paper, we have discussed a similar approach called Kinase Interacting Substrate Screening (KISS) for the identification of novel oncogenic substrates of p21-activated kinase specific to subtypes of breast cancer. Such high throughput approaches are expected to accelerate the process of identifying novel drug targets and biomarkers.
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Affiliation(s)
- Rahul Kanumuri
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences & Technology, Sri Ramachandra Institute of Higher Education & Research (Deemed to be University), Porur, Chennai, Tamilnadu, India; Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamilnadu, India
| | - Roshni Saravanan
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences & Technology, Sri Ramachandra Institute of Higher Education & Research (Deemed to be University), Porur, Chennai, Tamilnadu, India
| | - V Pavithra
- Department of Pathology, Sri Ramachandra Medical College & Research Institute, Sri Ramachandra Institute of Higher Education & Research (Deemed to be University), Porur, Chennai, Tamilnadu, India
| | - Sandhya Sundaram
- Department of Pathology, Sri Ramachandra Medical College & Research Institute, Sri Ramachandra Institute of Higher Education & Research (Deemed to be University), Porur, Chennai, Tamilnadu, India
| | - Suresh K Rayala
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamilnadu, India.
| | - Ganesh Venkatraman
- Department of Human Genetics, Sri Ramachandra Faculty of Biomedical Sciences & Technology, Sri Ramachandra Institute of Higher Education & Research (Deemed to be University), Porur, Chennai, Tamilnadu, India.
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11
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Deng Y, Guo W, Li G, Li S, Li H, Li X, Niu B, Song M, Zhang Y, Xu Z, Li F. Protocatechuic Aldehyde Represses Proliferation and Migration of Breast Cancer Cells through Targeting C-terminal Binding Protein 1. J Breast Cancer 2020; 23:20-35. [PMID: 32140267 PMCID: PMC7043946 DOI: 10.4048/jbc.2020.23.e7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 12/02/2019] [Indexed: 11/30/2022] Open
Abstract
Purpose C-terminal binding protein 1 (CtBP1) is a transcriptional co-repressor that is overexpressed in many cancers. CtBP1 transcriptionally represses a broad array of tumor suppressors, which promotes cancer cell proliferation, migration, invasion, and resistance to apoptosis. Recent studies have demonstrated that CtBP1 is a potential target for cancer therapy. This study was designed to screen for compounds that potentially target CtBP1. Methods Using a structure-based virtual screening for CtBP1 inhibitors, we found protocatechuic aldehyde (PA), a natural compound found in the root of a traditional Chinese herb, Salvia miltiorrhiza, that directly binds to CtBP1. Microscale thermophoresis assay was performed to determine whether PA and CtBP1 directly bind to each other. Further, clustered regularly interspaced short palindromic repeats associated Cas9 nuclease-mediated CtBP1 knockout in breast cancer cells was used to validate the CtBP1 targeting specificity of PA. Results Functional studies showed that PA repressed the proliferation and migration of breast cancer cells. Furthermore, PA elevated the expression of the downstream targets of CtBP1, p21 and E-cadherin, and decreased CtBP1 binding affinity for the promoter regions of p21 and E-cadherin in breast cancer cells. However, PA did not affect the expression of p21 and E-cadherin in the CtBP1 knockout breast cancer cells. In addition, the CtBP1 knockout breast cancer cells showed resistance to PA-induced repression of proliferation and migration. Conclusion Our findings demonstrated that PA directly bound to CtBP1 and inhibited the growth and migration of breast cancer cells through CtBP1 inhibition. Structural modifications of PA are further required to enhance its binding affinity and selectivity for CtBP1.
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Affiliation(s)
- Yu Deng
- School of Medicine, Chengdu University, Chengdu, China.,Institute of Cancer Biology and Drug Discovery, Chengdu University, Chengdu, China
| | - Wanjun Guo
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Guancheng Li
- The Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuang Li
- Department of Dermatology, Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China
| | - Hong Li
- Department of Dermatology, School of Medicine, University of Colorado Denver, Aurora, CO, USA
| | - Xinyan Li
- Department of Epidemiology and Biostatistics, College for Public Health and Social Justice, Saint Louis University, St. Louis, MO, USA
| | - Bei Niu
- School of Medicine, Chengdu University, Chengdu, China
| | - Mingzhu Song
- School of Medicine, Chengdu University, Chengdu, China
| | - Yamei Zhang
- Central Lab, Chengdu Univerisity Hospital, Chengdu, China
| | - Zhijian Xu
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Fulun Li
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China
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12
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Li H, Zhang C, Yang C, Blevins M, Norris D, Zhao R, Huang M. C-terminal binding proteins 1 and 2 in traumatic brain injury-induced inflammation and their inhibition as an approach for anti-inflammatory treatment. Int J Biol Sci 2020; 16:1107-1120. [PMID: 32174788 PMCID: PMC7053329 DOI: 10.7150/ijbs.42109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 12/29/2019] [Indexed: 01/10/2023] Open
Abstract
Traumatic brain injury (TBI) induces an acute inflammatory response in the central nervous system that involves both resident and peripheral immune cells. The ensuing chronic neuroinflammation causes cell death and tissue damage and may contribute to neurodegeneration. The molecular mechanisms involved in the maintenance of this chronic inflammation state remain underexplored. C-terminal binding protein (CtBP) 1 and 2 are transcriptional coregulators that repress diverse cellular processes. Unexpectedly, we find that the CtBPs can transactivate a common set of proinflammatory genes both in lipopolysaccharide-activated microglia, astrocytes and macrophages, and in a mouse model of the mild form of TBI. We also find that the expression of these genes is markedly enhanced by a single mild injury in both brain and peripheral blood leukocytes in a severity- and time-dependent manner. Moreover, we were able to demonstrate that specific inhibitors of the CtBPs effectively suppress the expression of the CtBP target genes and thus improve neurological outcome in mice receiving single and repeated mild TBIs. This discovery suggests new avenues for therapeutic modulation of the inflammatory response to brain injury.
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Affiliation(s)
- Hong Li
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
| | - Caiguo Zhang
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
| | - Chunxia Yang
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
- Department of Psychiatry, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Melanie Blevins
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
| | - David Norris
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
| | - Rui Zhao
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
| | - Mingxia Huang
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora CO 80045, USA
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13
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Byun JS, Park S, Yi DI, Shin JH, Hernandez SG, Hewitt SM, Nicklaus MC, Peach ML, Guasch L, Tang B, Wakefield LM, Yan T, Caban A, Jones A, Kabbout M, Vohra N, Nápoles AM, Singhal S, Yancey R, De Siervi A, Gardner K. Epigenetic re-wiring of breast cancer by pharmacological targeting of C-terminal binding protein. Cell Death Dis 2019; 10:689. [PMID: 31534138 PMCID: PMC6751206 DOI: 10.1038/s41419-019-1892-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/17/2019] [Accepted: 08/08/2019] [Indexed: 02/07/2023]
Abstract
The C-terminal binding protein (CtBP) is an NADH-dependent dimeric family of nuclear proteins that scaffold interactions between transcriptional regulators and chromatin-modifying complexes. Its association with poor survival in several cancers implicates CtBP as a promising target for pharmacological intervention. We employed computer-assisted drug design to search for CtBP inhibitors, using quantitative structure-activity relationship (QSAR) modeling and docking. Functional screening of these drugs identified 4 compounds with low toxicity and high water solubility. Micro molar concentrations of these CtBP inhibitors produces significant de-repression of epigenetically silenced pro-epithelial genes, preferentially in the triple-negative breast cancer cell line MDA-MB-231. This epigenetic reprogramming occurs through eviction of CtBP from gene promoters; disrupted recruitment of chromatin-modifying protein complexes containing LSD1, and HDAC1; and re-wiring of activating histone marks at targeted genes. In functional assays, CtBP inhibition disrupts CtBP dimerization, decreases cell migration, abolishes cellular invasion, and improves DNA repair. Combinatorial use of CtBP inhibitors with the LSD1 inhibitor pargyline has synergistic influence. Finally, integrated correlation of gene expression in breast cancer patients with nuclear levels of CtBP1 and LSD1, reveals new potential therapeutic vulnerabilities. These findings implicate a broad role for this class of compounds in strategies for epigenetically targeted therapeutic intervention.
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Affiliation(s)
- Jung S Byun
- National Institute on Minority Health and Health Disparities, Bethesda, MD, 20892, USA
| | - Samson Park
- Genetics Branch, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Dae Ik Yi
- Genetics Branch, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Jee-Hye Shin
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, MD, 20892, USA
| | | | - Stephen M Hewitt
- Laboratory of Pathology, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Marc C Nicklaus
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 20892, USA
| | - Megan L Peach
- Basic Science Program, Chemical Biology Laboratory, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Laura Guasch
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 20892, USA
| | - Binwu Tang
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Lalage M Wakefield
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Tingfen Yan
- National Human Genome Institute, Bethesda, MD, 20892, USA
| | - Ambar Caban
- National Institute on Minority Health and Health Disparities, Bethesda, MD, 20892, USA
| | - Alana Jones
- National Institute on Minority Health and Health Disparities, Bethesda, MD, 20892, USA
| | - Mohamed Kabbout
- National Institute on Minority Health and Health Disparities, Bethesda, MD, 20892, USA
| | - Nasreen Vohra
- Brody School of Medicine at East Carolina University, Greenville, NC, 27834, USA
| | - Anna María Nápoles
- National Institute on Minority Health and Health Disparities, Bethesda, MD, 20892, USA
| | - Sandeep Singhal
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Ryan Yancey
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Adriana De Siervi
- Laboratorio de Oncologıa Molecular y Nuevos Blancos Terapeuticos, Instituto de Biologıa y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
| | - Kevin Gardner
- National Institute on Minority Health and Health Disparities, Bethesda, MD, 20892, USA. .,Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA.
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14
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Beck DB, Subramanian T, Vijayalingam S, Ezekiel UR, Donkervoort S, Yang ML, Dubbs HA, Ortiz-Gonzalez XR, Lakhani S, Segal D, Au M, Graham JM, Verma S, Waggoner D, Shinawi M, Bönnemann CG, Chung WK, Chinnadurai G. A pathogenic CtBP1 missense mutation causes altered cofactor binding and transcriptional activity. Neurogenetics 2019; 20:129-143. [PMID: 31041561 DOI: 10.1007/s10048-019-00578-1] [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: 10/23/2018] [Revised: 03/18/2019] [Accepted: 04/09/2019] [Indexed: 11/29/2022]
Abstract
We previously reported a pathogenic de novo p.R342W mutation in the transcriptional corepressor CTBP1 in four independent patients with neurodevelopmental disabilities [1]. Here, we report the clinical phenotypes of seven additional individuals with the same recurrent de novo CTBP1 mutation. Within this cohort, we identified consistent CtBP1-related phenotypes of intellectual disability, ataxia, hypotonia, and tooth enamel defects present in most patients. The R342W mutation in CtBP1 is located within a region implicated in a high affinity-binding cleft for CtBP-interacting proteins. Unbiased proteomic analysis demonstrated reduced interaction of several chromatin-modifying factors with the CtBP1 W342 mutant. Genome-wide transcriptome analysis in human glioblastoma cell lines expressing -CtBP1 R342 (wt) or W342 mutation revealed changes in the expression profiles of genes controlling multiple cellular processes. Patient-derived dermal fibroblasts were found to be more sensitive to apoptosis during acute glucose deprivation compared to controls. Glucose deprivation strongly activated the BH3-only pro-apoptotic gene NOXA, suggesting a link between enhanced cell death and NOXA expression in patient fibroblasts. Our results suggest that context-dependent relief of transcriptional repression of the CtBP1 mutant W342 allele may contribute to deregulation of apoptosis in target tissues of patients leading to neurodevelopmental phenotypes.
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Affiliation(s)
- David B Beck
- National Human Genome Research Institute, National Institutes of Health, 10 Center Drive, Room B3-4129, Bethesda, MD, 20892, USA
| | - T Subramanian
- Institute for Molecular Virology, Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, E. A. Doisy Research Center, 6th Floor, St. Louis, MO, 63104, USA
| | - S Vijayalingam
- Institute for Molecular Virology, Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, E. A. Doisy Research Center, 6th Floor, St. Louis, MO, 63104, USA
| | - Uthayashankar R Ezekiel
- Clinical Health Sciences, Saint Louis University, 3437 Caroline Street, Allied Health Building, Suite 3025, Saint Louis, MO, 63104, USA
| | - Sandra Donkervoort
- National Institute of Neurological Disorders and Stroke Neurogenetics Branch, National Institutes of Health, 10 Center Drive Room 2B39, MSC 1477, Bethesda, MD, 20892, USA
| | - Michele L Yang
- University of Colorado Denver, 13123 E. 16th Ave; Box B155, Aurora, CO, 80238, USA
| | - Holly A Dubbs
- Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Xilma R Ortiz-Gonzalez
- Department of Neurology, Pereleman School of Medicine, University of Pennsylvania; Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Shenela Lakhani
- Center for Neurogenetics, Brain and Mind Research Institute, Weill Cornell Medicine, 413 E 69th Street, New York, NY, 10021, USA
| | - Devorah Segal
- Department of Pediatrics, Division of Child Neurology, Weill Cornell Medicine, 525 E. 68th St, Box 91, New York, NY, 10065, USA
| | - Margaret Au
- Medical Genetics, Department of Pediatrics, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90068, USA
| | - John M Graham
- Medical Genetics, Department of Pediatrics, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90068, USA
| | - Sumit Verma
- Division of Pediatric Neurology, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Darrel Waggoner
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - Marwan Shinawi
- Department of Pediatrics, Division of Genetics and Genomic Medicine,, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Carsten G Bönnemann
- National Institute of Neurological Disorders and Stroke Neurogenetics Branch, National Institutes of Health, 10 Center Drive Room 2B39, MSC 1477, Bethesda, MD, 20892, USA
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University Medical Center, New York, NY, USA.
| | - G Chinnadurai
- Institute for Molecular Virology, Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, E. A. Doisy Research Center, 6th Floor, St. Louis, MO, 63104, USA.
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15
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Zhang W, Duan N, Zhang Q, Song T, Li Z, Chen X, Wang K. The intracellular NADH level regulates atrophic nonunion pathogenesis through the CtBP2-p300-Runx2 transcriptional complex. Int J Biol Sci 2018; 14:2023-2036. [PMID: 30585266 PMCID: PMC6299368 DOI: 10.7150/ijbs.28302] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/05/2018] [Indexed: 12/03/2022] Open
Abstract
Atrophic nonunion, a complicated failure of fracture healing, is still obscure regarding its molecular pathological mechanisms. Carboxyl-terminal binding proteins (CtBPs), an NADH-sensitive transcriptional corepressor family, are involved in many diseases, such as cancer and inflammation. Here, we found that CtBP2, but not CtBP1, was significantly overexpressed in atrophic nonunion tissues compared to healthy controls. Using a mass spectrometry assay, we found that CtBP2 can form a complex with histone acetyltransferase p300 and transcription factor Runx2. The lower NADH level in atrophic nonunion tissues disrupted CtBP2 dimerization and enhanced the blockage of the accessibility of the p300-Runx2 complex to the promoters of a series of bone-related target genes, such as OSC, ALPL, COL1A1, IBSP, SPP1 and MMP13. The expression of these genes can be reversed by a forced increase in NADH with CoCl2 treatment. In conclusion, our study revealed that NADH levels determine the expression of bone formation and development of related genes through affecting the dissociation or binding of CtBP2 to the p300-Runx2 complex. These results represent a conserved mechanism, by which CtBP2 serves as a NADH-dependent repressor of the p300-Runx2 transcriptional complex and thus affects bone formation.
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Affiliation(s)
- Wentao Zhang
- Department of Orthopedics, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710005, Shaanxi, China.,Department of Orthopaedics, Hong-Hui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Ning Duan
- Department of Orthopaedics, Hong-Hui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Qian Zhang
- The second department of surgery room, Shaanxi Provincial Tumor Hospital, Xi'an 710061, Shaanxi, China
| | - Tao Song
- Department of Orthopaedics, Hong-Hui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Zhong Li
- Department of Orthopaedics, Hong-Hui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Xun Chen
- Department of Orthopaedics, Hong-Hui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi, China
| | - Kunzheng Wang
- Department of Orthopedics, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710005, Shaanxi, China
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16
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Deng Y, Li H, Yin X, Liu H, Liu J, Guo D, Shi Z. C-Terminal Binding Protein 1 Modulates Cellular Redox via Feedback Regulation of MPC1 and MPC2 in Melanoma Cells. Med Sci Monit 2018; 24:7614-7624. [PMID: 30356033 PMCID: PMC6213824 DOI: 10.12659/msm.912735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/10/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Recent studies have illustrated that the transcription co-repressor, C-terminal binding protein 1 (CtBP1), links the metabolic alterations to transcription controls in proliferation, EMT, genome stability, metabolism, and lifespan, but whether CtBP1 affects the cellular redox homeostasis is unexplored. This study was designed to investigate the mechanism of CtBP1-mediated transcription repression that contributes to the metabolic reprogramming. MATERIAL AND METHODS Knockdown of CtBP1 in both mouse MEF cells and human melanoma cells changed cell redox homeostasis. Further, chromatin immunoprecipitation (ChIP) and luciferase reporter assay were performed for identification of CtBP1 downstream targets, pyruvate carrier 1 and 2 genes (MPC1 and MPC2), which contribute to redox homeostasis and are transcriptionally regulated by CtBP1. Moreover, blockage of the cellular NADH level with the glycolysis inhibitor 2-Deoxy-D-Glucose (2-DG) rescued MPC1 and MPC2 expression. MTT assay and scratch assay were performed to investigate the effect of MPC1 and MPC2 expression on malignant properties of melanoma cells. RESULTS The data demonstrated that CtBP1 directly bound to the promoters of MPC1 and MPC2 and transcriptionally repressed them, leading to increased levels of free NADH in the cytosol and nucleus, thus positively feeding back CtBP1's functions. Consequently, restoring MPC1 and MPC2 in human tumor cells decreases free NADH and inhibits melanoma cell proliferation and migration. CONCLUSIONS Our data indicate that MPC1 and MPC2 are principal mediators that link CtBP1-mediated transcription regulation to NADH production. The discovery of CtBP1 as an NADH regulator in addition to being an NADH sensor shows that CtBP1 is at the center of tumor metabolism and transcription control.
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Affiliation(s)
- Yu Deng
- School of Medicine, Chengdu University, Chengdu, Sichuan, P.R. China
- Department of Dermatology, School of Medicine, University of Colorado Denver, Aurora, CO, U.S.A
| | - Hong Li
- Department of Dermatology, School of Medicine, University of Colorado Denver, Aurora, CO, U.S.A
| | - Xinyi Yin
- Department of Epidemiology and Biostatistics, College for Public Health and Social Justice, Saint Louis University, St. Louis, MO, U.S.A
| | - Hongbin Liu
- Department of Dermatology, School of Medicine, University of Colorado Denver, Aurora, CO, U.S.A
- Department of Respiratory Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu, P.R. China
| | - Jing Liu
- Department of Dermatology, School of Medicine, University of Colorado Denver, Aurora, CO, U.S.A
| | - Dongjie Guo
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Zheng Shi
- School of Medicine, Chengdu University, Chengdu, Sichuan, P.R. China
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17
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Hu CJ, Zhang H, Laux A, Pullamsetti SS, Stenmark KR. Mechanisms contributing to persistently activated cell phenotypes in pulmonary hypertension. J Physiol 2018; 597:1103-1119. [PMID: 29920674 PMCID: PMC6375873 DOI: 10.1113/jp275857] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 05/16/2018] [Indexed: 12/24/2022] Open
Abstract
Chronic pulmonary hypertension (PH) is characterized by the accumulation of persistently activated cell types in the pulmonary vessel exhibiting aberrant expression of genes involved in apoptosis resistance, proliferation, inflammation and extracellular matrix (ECM) remodelling. Current therapies for PH, focusing on vasodilatation, do not normalize these activated phenotypes. Furthermore, current approaches to define additional therapeutic targets have focused on determining the initiating signals and their downstream effectors that are important in PH onset and development. Although these approaches have produced a large number of compelling PH treatment targets, many promising human drugs have failed in PH clinical trials. Herein, we propose that one contributing factor to these failures is that processes important in PH development may not be good treatment targets in the established phase of chronic PH. We hypothesize that this is due to alterations of chromatin structure in PH cells, resulting in functional differences between the same factor or pathway in normal or early PH cells versus cells in chronic PH. We propose that the high expression of genes involved in the persistently activated phenotype of PH vascular cells is perpetuated by an open chromatin structure and multiple transcription factors (TFs) via the recruitment of high levels of epigenetic regulators including the histone acetylases P300/CBP, histone acetylation readers including BRDs, the Mediator complex and the positive transcription elongation factor (Abstract figure). Thus, determining how gene expression is controlled by examining chromatin structure, TFs and epigenetic regulators associated with aberrantly expressed genes in pulmonary vascular cells in chronic PH, may uncover new PH therapeutic targets.
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Affiliation(s)
- Cheng-Jun Hu
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Hui Zhang
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Aya Laux
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Soni S Pullamsetti
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine, Universities of Giessen and Marburg Lung Center (UGMLC), member of the DZL, Justus-Liebig University, Giessen, Germany
| | - Kurt R Stenmark
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Blevins MA, Zhang C, Zhang L, Li H, Li X, Norris DA, Huang M, Zhao R. CPP-E1A fusion peptides inhibit CtBP-mediated transcriptional repression. Mol Oncol 2018; 12:1358-1373. [PMID: 29879296 PMCID: PMC6068344 DOI: 10.1002/1878-0261.12330] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 05/17/2018] [Accepted: 05/18/2018] [Indexed: 12/29/2022] Open
Abstract
The carboxyl‐terminal binding proteins (CtBP) are transcriptional corepressors that regulate the expression of multiple epithelial‐specific and pro‐apoptotic genes. Overexpression of CtBP occurs in many human cancers where they promote the epithelial‐to‐mesenchymal transition, stem cell‐like features, and cell survival, while knockdown of CtBP in tumor cells results in p53‐independent apoptosis. CtBPs are recruited to their target genes by binding to a conserved PXDLS peptide motif present in multiple DNA‐binding transcription factors. Disrupting the interaction between CtBP and its transcription factor partners may be a means of altering CtBP‐mediated transcriptional repression and a potential approach for cancer therapies. However, small molecules targeting protein–protein interactions have traditionally been difficult to identify. In this study, we took advantage of the fact that CtBP binds to a conserved peptide motif to explore the feasibility of using peptides containing the PXDLS motif fused to cell‐penetrating peptides (CPP) to inhibit CtBP function. We demonstrate that these peptides disrupt the ability of CtBP to interact with its protein partner, E1A, in an AlphaScreen assay. Moreover, these peptides can enter both lung carcinoma and melanoma cells, disrupt the interaction between CtBP and a transcription factor partner, and inhibit CtBP‐mediated transcriptional repression. Finally, the constitutive expression of one such peptide, Pep1‐E1A‐WT, in a melanoma cell line reverses CtBP‐mediated oncogenic phenotypes including proliferation, migration, and sphere formation and limits tumor growth in vivo. Together, our results suggest that CPP‐fused PXDLS‐containing peptides can potentially be developed into a research tool or therapeutic agent targeting CtBP‐mediated transcriptional events in various biological pathways.
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Affiliation(s)
- Melanie A Blevins
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Caiguo Zhang
- Department of Dermatology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Lingdi Zhang
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Hong Li
- Department of Dermatology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Xueni Li
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - David A Norris
- Department of Dermatology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Mingxia Huang
- Department of Dermatology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
| | - Rui Zhao
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
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19
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Blevins MA, Huang M, Zhao R. The Role of CtBP1 in Oncogenic Processes and Its Potential as a Therapeutic Target. Mol Cancer Ther 2018; 16:981-990. [PMID: 28576945 DOI: 10.1158/1535-7163.mct-16-0592] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/11/2016] [Accepted: 02/22/2017] [Indexed: 12/24/2022]
Abstract
Transcriptional corepressor proteins have emerged as an important facet of cancer etiology. These corepressor proteins are often altered by loss- or gain-of-function mutations, leading to transcriptional imbalance. Thus, research directed at expanding our current understanding of transcriptional corepressors could impact the future development of new cancer diagnostics, prognostics, and therapies. In this review, our current understanding of the CtBP corepressors, and their role in both development and disease, is discussed in detail. Importantly, the role of CtBP1 overexpression in adult tissues in promoting the progression of multiple cancer types through their ability to modulate the transcription of developmental genes ectopically is explored. CtBP1 overexpression is known to be protumorigenic and affects the regulation of gene networks associated with "cancer hallmarks" and malignant behavior, including increased cell survival, proliferation, migration, invasion, and the epithelial-mesenchymal transition. As a transcriptional regulator of broad developmental processes capable of promoting malignant growth in adult tissues, therapeutically targeting the CtBP1 corepressor has the potential to be an effective method for the treatment of diverse tumor types. Although efforts to develop CtBP1 inhibitors are still in the early stages, the current progress and the future perspectives of therapeutically targeting this transcriptional corepressor are also discussed. Mol Cancer Ther; 16(6); 981-90. ©2017 AACR.
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Affiliation(s)
- Melanie A Blevins
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado
| | - Mingxia Huang
- Department of Dermatology, University of Colorado School of Medicine, Aurora, Colorado.
| | - Rui Zhao
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado.
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20
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D'Alessandro A, El Kasmi KC, Plecitá-Hlavatá L, Ježek P, Li M, Zhang H, Gupte SA, Stenmark KR. Hallmarks of Pulmonary Hypertension: Mesenchymal and Inflammatory Cell Metabolic Reprogramming. Antioxid Redox Signal 2018; 28. [PMID: 28637353 PMCID: PMC5737722 DOI: 10.1089/ars.2017.7217] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
SIGNIFICANCE The molecular events that promote the development of pulmonary hypertension (PH) are complex and incompletely understood. The complex interplay between the pulmonary vasculature and its immediate microenvironment involving cells of immune system (i.e., macrophages) promotes a persistent inflammatory state, pathological angiogenesis, and fibrosis that are driven by metabolic reprogramming of mesenchymal and immune cells. Recent Advancements: Consistent with previous findings in the field of cancer metabolism, increased glycolytic rates, incomplete glucose and glutamine oxidation to support anabolism and anaplerosis, altered lipid synthesis/oxidation ratios, increased one-carbon metabolism, and activation of the pentose phosphate pathway to support nucleoside synthesis are but some of the key metabolic signatures of vascular cells in PH. In addition, metabolic reprogramming of macrophages is observed in PH and is characterized by distinct features, such as the induction of specific activation or polarization states that enable their participation in the vascular remodeling process. CRITICAL ISSUES Accumulation of reducing equivalents, such as NAD(P)H in PH cells, also contributes to their altered phenotype both directly and indirectly by regulating the activity of the transcriptional co-repressor C-terminal-binding protein 1 to control the proliferative/inflammatory gene expression in resident and immune cells. Further, similar to the role of anomalous metabolism in mitochondria in cancer, in PH short-term hypoxia-dependent and long-term hypoxia-independent alterations of mitochondrial activity, in the absence of genetic mutation of key mitochondrial enzymes, have been observed and explored as potential therapeutic targets. FUTURE DIRECTIONS For the foreseeable future, short- and long-term metabolic reprogramming will become a candidate druggable target in the treatment of PH. Antioxid. Redox Signal. 28, 230-250.
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Affiliation(s)
- Angelo D'Alessandro
- 1 Department of Biochemistry and Molecular Genetics, University of Colorado - Denver , Colorado
| | - Karim C El Kasmi
- 2 Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, University of Colorado - Denver , Colorado.,3 Department of Pediatric Gastroenterology, University of Colorado - Denver , Colorado
| | - Lydie Plecitá-Hlavatá
- 4 Department of Mitochondrial Physiology, Institute of Physiology , Czech Academy of Sciences, Prague, Czech Republic
| | - Petr Ježek
- 4 Department of Mitochondrial Physiology, Institute of Physiology , Czech Academy of Sciences, Prague, Czech Republic
| | - Min Li
- 2 Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, University of Colorado - Denver , Colorado
| | - Hui Zhang
- 2 Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, University of Colorado - Denver , Colorado
| | - Sachin A Gupte
- 5 Department of Pharmacology, School of Medicine, New York Medical College , Valhalla, New York
| | - Kurt R Stenmark
- 2 Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, University of Colorado - Denver , Colorado
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21
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FBXO32 promotes microenvironment underlying epithelial-mesenchymal transition via CtBP1 during tumour metastasis and brain development. Nat Commun 2017; 8:1523. [PMID: 29142217 PMCID: PMC5688138 DOI: 10.1038/s41467-017-01366-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 09/12/2017] [Indexed: 12/12/2022] Open
Abstract
The set of events that convert adherent epithelial cells into migratory cells are collectively known as epithelial–mesenchymal transition (EMT). EMT is involved during development, for example, in triggering neural crest migration, and in pathogenesis such as metastasis. Here we discover FBXO32, an E3 ubiquitin ligase, to be critical for hallmark gene expression and phenotypic changes underlying EMT. Interestingly, FBXO32 directly ubiquitinates CtBP1, which is required for its stability and nuclear retention. This is essential for epigenetic remodeling and transcriptional induction of CtBP1 target genes, which create a suitable microenvironment for EMT progression. FBXO32 is also amplified in metastatic cancers and its depletion in a NSG mouse xenograft model inhibits tumor growth and metastasis. In addition, FBXO32 is essential for neuronal EMT during brain development. Together, these findings establish that FBXO32 acts as an upstream regulator of EMT by governing the gene expression program underlying this process during development and disease. Epithelial-to-mesenchymal transition (EMT) regulates both processes of organism development and changes in cell state causing disease. Here, the authors show that an E3 ubiquitin ligase, FBXO32, regulates EMT via CtBP1 and the transcriptional program, and also mediates cancer metastatic burden and neurogenesis.
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22
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Dcona MM, Morris BL, Ellis KC, Grossman SR. CtBP- an emerging oncogene and novel small molecule drug target: Advances in the understanding of its oncogenic action and identification of therapeutic inhibitors. Cancer Biol Ther 2017; 18:379-391. [PMID: 28532298 PMCID: PMC5536941 DOI: 10.1080/15384047.2017.1323586] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
C-terminal Binding Proteins (CtBP) 1 and 2 are oncogenic transcriptional co-regulators overexpressed in many cancer types, with their expression level correlating to worse prognostic outcomes and aggressive tumor features. CtBP negatively regulates the expression of many tumor suppressor genes, while coactivating genes that promote proliferation, epithelial-mesenchymal transition, and cancer stem cell self-renewal activity. In light of this evidence, the development of novel inhibitors that mitigate CtBP function may provide clinically actionable therapeutic tools. This review article focuses on the progress made in understanding CtBP structure, role in tumor progression, and discovery and development of CtBP inhibitors that target CtBP's dehydrogenase activity and other functions, with a focus on the theory and rationale behind the designs of current inhibitors. We provide insight into the future development and use of rational combination therapy that may further augment the efficacy of CtBP inhibitors, specifically addressing metastasis and cancer stem cell populations within tumors.
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Affiliation(s)
- M Michael Dcona
- a Department of Internal Medicine , Virginia Commonwealth University , Richmond , VA , USA
| | - Benjamin L Morris
- b Department of Human and Molecular Genetics , Virginia Commonwealth University , Richmond , VA , USA
| | - Keith C Ellis
- c Department of Medicinal Chemistry , Virginia Commonwealth University , Richmond , VA , USA.,d Institute for Structural Biology , Drug Discovery and Development, Virginia Commonwealth University , Richmond , VA , USA.,e VCU Massey Cancer Center , Virginia Commonwealth University , Richmond , VA , USA
| | - Steven R Grossman
- a Department of Internal Medicine , Virginia Commonwealth University , Richmond , VA , USA.,b Department of Human and Molecular Genetics , Virginia Commonwealth University , Richmond , VA , USA.,d Institute for Structural Biology , Drug Discovery and Development, Virginia Commonwealth University , Richmond , VA , USA.,e VCU Massey Cancer Center , Virginia Commonwealth University , Richmond , VA , USA
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23
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Pullamsetti SS, Perros F, Chelladurai P, Yuan J, Stenmark K. Transcription factors, transcriptional coregulators, and epigenetic modulation in the control of pulmonary vascular cell phenotype: therapeutic implications for pulmonary hypertension (2015 Grover Conference series). Pulm Circ 2017; 6:448-464. [PMID: 28090287 DOI: 10.1086/688908] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pulmonary hypertension (PH) is a complex and multifactorial disease involving genetic, epigenetic, and environmental factors. Numerous stimuli and pathological conditions facilitate severe vascular remodeling in PH by activation of a complex cascade of signaling pathways involving vascular cell proliferation, differentiation, and inflammation. Multiple signaling cascades modulate the activity of certain sequence-specific DNA-binding transcription factors (TFs) and coregulators that are critical for the transcriptional regulation of gene expression that facilitates PH-associated vascular cell phenotypes, as demonstrated by several studies summarized in this review. Past studies have largely focused on the role of the genetic component in the development of PH, while the presence of epigenetic alterations such as microRNAs, DNA methylation, histone levels, and histone deacetylases in PH is now also receiving increasing attention. Epigenetic regulation of chromatin structure is also recognized to influence gene expression in development or disease states. Therefore, a complete understanding of the mechanisms involved in altered gene expression in diseased cells is vital for the design of novel therapeutic strategies. Recent technological advances in DNA sequencing will provide a comprehensive improvement in our understanding of mechanisms involved in the development of PH. This review summarizes current concepts in TF and epigenetic control of cell phenotype in pulmonary vascular disease and discusses the current issues and possibilities in employing potential epigenetic or TF-based therapies for achieving complete reversal of PH.
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Affiliation(s)
- Soni S Pullamsetti
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany; Department of Internal Medicine, Universities of Giessen and Marburg Lung Center (UGMLC), member of the DZL, Justus-Liebig University, Giessen, Germany
| | - Frédéric Perros
- Université Paris-Sud; and Institut national de la santé et de la recherche médicale (Inserm) Unité Mixte de Recherche (UMR_S) 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Prakash Chelladurai
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany
| | - Jason Yuan
- University of Arizona, Tucson, Arizona, USA
| | - Kurt Stenmark
- Cardiovascular Pulmonary Research Laboratories, Department of Medicine and Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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24
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Li M, Riddle S, Zhang H, D'Alessandro A, Flockton A, Serkova NJ, Hansen KC, Moldovan R, McKeon BA, Frid M, Kumar S, Li H, Liu H, Caánovas A, Medrano JF, Thomas MG, Iloska D, Plecitá-Hlavatá L, Ježek P, Pullamsetti S, Fini MA, El Kasmi KC, Zhang Q, Stenmark KR. Metabolic Reprogramming Regulates the Proliferative and Inflammatory Phenotype of Adventitial Fibroblasts in Pulmonary Hypertension Through the Transcriptional Corepressor C-Terminal Binding Protein-1. Circulation 2016; 134:1105-1121. [PMID: 27562971 PMCID: PMC5069179 DOI: 10.1161/circulationaha.116.023171] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 08/12/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Changes in metabolism have been suggested to contribute to the aberrant phenotype of vascular wall cells, including fibroblasts, in pulmonary hypertension (PH). Here, we test the hypothesis that metabolic reprogramming to aerobic glycolysis is a critical adaptation of fibroblasts in the hypertensive vessel wall that drives proliferative and proinflammatory activation through a mechanism involving increased activity of the NADH-sensitive transcriptional corepressor C-terminal binding protein 1 (CtBP1). METHODS RNA sequencing, quantitative polymerase chain reaction,13C-nuclear magnetic resonance, fluorescence-lifetime imaging, mass spectrometry-based metabolomics, and tracing experiments with U-13C-glucose were used to assess glycolytic reprogramming and to measure the NADH/NAD+ ratio in bovine and human adventitial fibroblasts and mouse lung tissues. Immunohistochemistry was used to assess CtBP1 expression in the whole-lung tissues. CtBP1 siRNA and the pharmacological inhibitor 4-methylthio-2-oxobutyric acid (MTOB) were used to abrogate CtBP1 activity in cells and hypoxic mice. RESULTS We found that adventitial fibroblasts from calves with severe hypoxia-induced PH and humans with idiopathic pulmonary arterial hypertension (PH-Fibs) displayed aerobic glycolysis when cultured under normoxia, accompanied by increased free NADH and NADH/NAD+ ratios. Expression of the NADH sensor CtBP1 was increased in vivo and in vitro in fibroblasts within the pulmonary adventitia of humans with idiopathic pulmonary arterial hypertension and animals with PH and cultured PH-Fibs, respectively. Decreasing NADH pharmacologically with MTOB or genetically blocking CtBP1 with siRNA upregulated the cyclin-dependent genes (p15 and p21) and proapoptotic regulators (NOXA and PERP), attenuated proliferation, corrected the glycolytic reprogramming phenotype of PH-Fibs, and augmented transcription of the anti-inflammatory gene HMOX1. Chromatin immunoprecipitation analysis demonstrated that CtBP1 directly binds the HMOX1 promoter. Treatment of hypoxic mice with MTOB decreased glycolysis and expression of inflammatory genes, attenuated proliferation, and suppressed macrophage numbers and remodeling in the distal pulmonary vasculature. CONCLUSIONS CtBP1 is a critical factor linking changes in cell metabolism to cell phenotype in hypoxic and other forms of PH and a therapeutic target.
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Affiliation(s)
- Min Li
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Suzette Riddle
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Hui Zhang
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Angelo D'Alessandro
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Amanda Flockton
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Natalie J Serkova
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Kirk C Hansen
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Radu Moldovan
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - B Alexandre McKeon
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Maria Frid
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Sushil Kumar
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Hong Li
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Hongbing Liu
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Angela Caánovas
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Juan F Medrano
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Milton G Thomas
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Dijana Iloska
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Lydie Plecitá-Hlavatá
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Petr Ježek
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Soni Pullamsetti
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Mehdi A Fini
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Karim C El Kasmi
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - QingHong Zhang
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.)
| | - Kurt R Stenmark
- From Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO (M.L., S.R., H.Z., A.F., B.A.M., M.F., S.K., M.A.F., K.R.S.); Department of Biochemistry and Molecular Genetics and Biological Mass Spectrometry Shared Resource (A.D., K.C.H.), Department of Anesthesiology (N.J.S.), Advanced Light Microscopy Core Facility (R.M.), Department of Dermatology (H.L., H.L., Q.Z.), and Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition (K.C.E.K.), University of Colorado, Denver; Department of Mitochondrial Physiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic (L.P.-H., P.J.); Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany (D.I., S.P.); Center for Genetic Improvement of Livestock, Department of Animal Bioscience, University of Guelph, Guelph, ON, Canada (A.C.); Department of Animal Science, University of California-Davis, Davis (J.F.M.); and Department of Animal Science, Colorado State University, Fort Collins (M.G.T.).
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C-Terminal Binding Protein is Involved in Promoting to the Carcinogenesis of Human Glioma. Mol Neurobiol 2016; 54:6121-6132. [PMID: 27699603 DOI: 10.1007/s12035-016-0159-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 09/22/2016] [Indexed: 12/13/2022]
Abstract
C-terminal binding protein (CtBP) is responsible for regulating the pathogenesis of a lot of cancer types. However, whether CtBP1/2 is involved in regulating the growth and development of human glioma is still obscure. In the present study presented here, our results firstly reveal that CtBP1/2 deficiency, induced by siRNA interference, disrupts the functional integrity of the MRN complex that is responsible for DNA repair in human glioma cells. The dysfunction of the MRN complex further contributes to the up-regulation of ATM and Rad3-related kinase (ATR) and Chk1 signaling pathway, which inhibits cell cycle progression mediated by CDK2, preparing for the initiation of DNA repair. Under the condition of hypoxia, hypoxia-inducible factor-1α (HIF-1α) can be directly regulated by CDK2 on protein level, playing coordinately regulatory role in the carcinogenesis of human glioma cells. Overall, our findings reveal that CtBP1/2 is essential to promote to human glioma cell growth through maintaining the DNA stability regulated by the MRN/ATR/Chk1/CDK2/HIF-1α signaling pathway.
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Patel J, Baranwal S, Love IM, Patel NJ, Grossman SR, Patel BB. Inhibition of C-terminal binding protein attenuates transcription factor 4 signaling to selectively target colon cancer stem cells. Cell Cycle 2015; 13:3506-18. [PMID: 25483087 DOI: 10.4161/15384101.2014.958407] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Selective targeting of cancer stem cells (CSCs), implicated in tumor relapse, holds great promise in the treatment of colorectal cancer. Overexpression of C-terminal binding protein (CtBP), an NADH dependent transcriptional regulator, is often observed in colon cancer. Of note, TCF-4 signaling is also up-regulated in colonic CSCs. We hypothesized that CtBP, whose dehydrogenase activity is amenable to pharmacological inhibition by 4-methylthio-2-oxobutyric acid (MTOB), positively regulates TCF-4 signaling, leading to CSC growth and self-renewal. CSCs demonstrated significant upregulation of CtBP1 and CtBP2 levels (mRNA and protein) and activity partly due to increased NADH/NAD ratio, as well as increased TCF/LEF transcriptional activity, compared to respective controls. Depletion of CtBP2 inhibited, while its overexpression enhanced, CSC growth (1° spheroids) and self-renewal (2°/3° spheroids). Similarly, MTOB caused a robust inhibition of spheroid growth and self-renewal in a dose dependent manner. MTOB displayed significantly greater selectivity for growth inhibition in the spheroids, at least in part through induction of apoptosis, compared to monolayer controls. Moreover, MTOB inhibited basal as well as induced (by GSK-3β inhibitor) TCF/LEF activity while suppressing mRNA and protein levels of several β-catenin target genes (CD44, Snail, C-MYC and LGR5). Lastly, CtBP physically interacted with TCF-4, and this interaction was significantly inhibited in the presence of MTOB. The above findings point to a novel role of CtBPs in the promotion of CSC growth and self-renewal through direct regulation of TCF/LEF transcription. Moreover, small molecular inhibition of its function can selectively target CSCs, presenting a novel approach for treatment of colorectal cancer focused on targeting of CSCs.
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Affiliation(s)
- Jagrut Patel
- a Hunter Holmes McGuire VA Medical Center ; Richmond , VA USA
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Hair BY, Xu Z, Kirk EL, Harlid S, Sandhu R, Robinson WR, Wu MC, Olshan AF, Conway K, Taylor JA, Troester MA. Body mass index associated with genome-wide methylation in breast tissue. Breast Cancer Res Treat 2015; 151:453-63. [PMID: 25953686 PMCID: PMC4474159 DOI: 10.1007/s10549-015-3401-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 04/21/2015] [Indexed: 01/04/2023]
Abstract
Gene expression studies indicate that body mass index (BMI) is associated with molecular pathways involved in inflammation, insulin-like growth factor activation, and other carcinogenic processes in breast tissue. The goal of this study was to determine whether BMI is associated with gene methylation in breast tissue and to identify pathways that are commonly methylated in association with high BMI. Epigenome-wide methylation profiles were determined using the Illumina HumanMethylation450 BeadChip array in the non-diseased breast tissue of 81 women undergoing breast surgery between 2009 and 2013 at the University of North Carolina Hospitals. Multivariable, robust linear regression was performed to identify methylation sites associated with BMI at a false discovery rate q value <0.05. Gene expression microarray data was used to identify which of the BMI-associated methylation sites also showed correlation with gene expression. Gene set enrichment analysis was conducted to assess which pathways were enriched among the BMI-associated methylation sites. Of the 431,568 methylation sites analyzed, 2573 were associated with BMI (q value <0.05), 57 % of which showed an inverse correlation with BMI. Pathways enriched among the 2573 probe sites included those involved in inflammation, insulin receptor signaling, and leptin signaling. We were able to map 1251 of the BMI-associated methylation sites to gene expression data, and, of these, 226 (18 %) showed substantial correlations with gene expression. Our results suggest that BMI is associated with genome-wide methylation in non-diseased breast tissue and may influence epigenetic pathways involved in inflammatory and other carcinogenic processes.
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Affiliation(s)
- Brionna Y Hair
- Department of Epidemiology, University of North Carolina at Chapel Hill, CB #7435, 2101 McGavran-Greenberg Hall, Chapel Hill, NC, 27599-7435, USA,
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Abstract
The mammalian CtIP protein and its orthologs in other eukaryotes promote the resection of DNA double-strand breaks and are essential for meiotic recombination. Here we review the current literature supporting the role of CtIP in DNA end processing and the importance of CtIP endonuclease activity in DNA repair. We also examine the regulation of CtIP function by post-translational modifications, and its involvement in transcription- and replication-dependent functions through association with other protein complexes. The tumor suppressor function of CtIP likely is dependent on a combination of these roles in many aspects of DNA metabolism.
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Wang L, Zhou H, Wang Y, Cui G, Di LJ. CtBP maintains cancer cell growth and metabolic homeostasis via regulating SIRT4. Cell Death Dis 2015; 6:e1620. [PMID: 25633289 PMCID: PMC4669780 DOI: 10.1038/cddis.2014.587] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 12/11/2014] [Accepted: 12/12/2014] [Indexed: 12/18/2022]
Abstract
Cancer cells rely on glycolysis to maintain high levels of anabolism. However, the metabolism of glucose via glycolysis in cancer cells is frequently incomplete and results in the accumulation of acidic metabolites such as pyruvate and lactate. Thus, the cells have to develop strategies to alleviate the intracellular acidification and maintain the pH stability. We report here that glutamine consumption by cancer cells has an important role in releasing the acidification pressure associated with cancer cell growth. We found that the ammonia produced during glutaminolysis, a dominant glutamine metabolism pathway, is critical to resist the cytoplasmic acidification brought by the incomplete glycolysis. In addition, C-terminal-binding protein (CtBP) was found to have an essential role in promoting glutaminolysis by directly repressing the expression of SIRT4, a repressor of glutaminolysis by enzymatically modifying glutamate dehydrogenase in mitochondria, in cancer cells. The loss of CtBP in cancer cells resulted in the increased apoptosis due to intracellular acidification and the ablation of cancer cell metabolic homeostasis represented by decreased glutamine consumption, oxidative phosphorylation and ATP synthesis. Importantly, the immunohistochemistry staining showed that there was excessive expression of CtBP in tumor samples from breast cancer patients compared with surrounding non-tumor tissues, whereas SIRT4 expression in tumor tissues was abolished compared with the non-tumor tissues, suggesting CtBP-repressed SIRT4 expression contributes to the tumor growth. Therefore, our data suggest that the synergistically metabolism of glucose and glutamine in cancer cells contributes to both pH homeostasis and cell growth. At last, application of CtBP inhibitor induced the acidification and apoptosis of breast cancer cells and inhibited glutaminolysis in engrafted tumors, suggesting that CtBP can be potential therapeutic target of cancer treatment.
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Affiliation(s)
- L Wang
- University of Macau, Macau, SAR of People's Republic of China
| | - H Zhou
- School of life Sciences, Anhui Medical University, Hefei, Anhui Province, People's Republic of China
| | - Y Wang
- Institute of Chinese Medical Sciences, University of Macau, Macau, SAR of People's Republic of China
| | - G Cui
- 1] Institute of Chinese Medical Sciences, University of Macau, Macau, SAR of People's Republic of China [2] Bioengineering department, Zunyi Medical college, Zhuhai, Guangdong Province, People's Republic of China
| | - L-J Di
- University of Macau, Macau, SAR of People's Republic of China
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30
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Busu C, Atanasiu V, Caldito G, Aw TY. Influence of GSH synthesis inhibition on temporal distribution of NAD+/NADH during vascular endothelial cells proliferation. J Med Life 2014; 7:611-8. [PMID: 25713632 PMCID: PMC4316149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 09/25/2014] [Indexed: 11/30/2022] Open
Abstract
Pathological conditions states such as stroke, diabetes mellitus, hypertension, dyslipidemia are associated with increased levels of free radicals that alter normal function of the vascular endothelium and perturb vascular homeostasis. The redox couples reduced glutathione (GSH)/oxidized glutathione (GSSG), NADH/NAD+, and NADPH/NADP+ play major functions in the intracellular redox balance. Any decrease in tissue or systemic GSH levels under the aforementioned pathologies would enhance oxidative damage to the vascular endothelium. Beside their role as coenzyme that participate in cellular metabolism, pyridine nucleotides serve also as substrate for enzymes involved in DNA repair and longevity. There is scant data on NAD+/NADH kinetics and distribution during human cells proliferation. Here, we determined the influence of cellular GSH status on the early dynamics of nuclear-to-cytosol (N-to-C) NAD+ and nuclear NADH kinetics (6 h interval) over 72 h of endothelial cell proliferation. The IHEC cell line was used as a surrogate for human brain micro vascular endothelial cells. Inhibition of GSH synthesis by buthionine sulfoximine (BSO) and sustained low cellular GSH significantly increased nuclear NADH levels (p<0.01), which correlated with lower nuclear GSH and prolonged cell cycle S-phase. When BSO was removed the pattern of nuclear NAD+ resembled that of control group, but nuclear NADH concentrations remained elevated, as in GSH deficient cells (p<0.01). The coincidence of high nuclear NADH and lower nuclear NAD+ with S-phase prolongation are suggestive of CtBP and NAD+-dependent DNA repair enzyme activation under conditions of decreased cellular GSH. These results provide important insights into GSH control of vascular endothelial growth and restitution, key processes in the restoration of the endothelium adjacent to the post-injury lesion site.
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Affiliation(s)
- C Busu
- "Carol Davila" University of Medicine and Pharmacy, Medical School, Biochemistry Department, Bucharest, Romania ; Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - V Atanasiu
- "Carol Davila" University of Medicine and Pharmacy, Medical School, Biochemistry Department, Bucharest, Romania
| | - G Caldito
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - T Y Aw
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
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31
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Moiola CP, De Luca P, Zalazar F, Cotignola J, Rodríguez-Seguí SA, Gardner K, Meiss R, Vallecorsa P, Pignataro O, Mazza O, Vazquez ES, De Siervi A. Prostate tumor growth is impaired by CtBP1 depletion in high-fat diet-fed mice. Clin Cancer Res 2014; 20:4086-95. [PMID: 24842953 DOI: 10.1158/1078-0432.ccr-14-0322] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE Clinical and epidemiologic data suggest that obesity is associated with more aggressive forms of prostate cancer, poor prognosis, and increased mortality. C-terminal-binding protein 1 (CtBP1) is a transcription repressor of tumor suppressor genes and is activated by NADH binding. High calorie intake decreases intracellular NAD(+)/NADH ratio. The aim of this work was to assess the effect of high-fat diet (HFD) and CtBP1 expression modulation over prostate xenograft growth. EXPERIMENTAL DESIGN We developed a metabolic syndrome-like disease in vivo model by feeding male nude mice with HFD during 16 weeks. Control diet (CD)-fed animals were maintained at the same conditions. Mice were inoculated with PC3 cells stable transfected with shCtBP1 or control plasmids. Genome-wide expression profiles and Gene Set Enrichment Analysis (GSEA) were performed from PC3.shCtBP1 versus PC3.pGIPZ HFD-fed mice tumors. RESULTS No significant differences were observed in tumor growth on CD-fed mice; however, we found that only 60% of HFD-fed mice inoculated with CtBP1-depleted cells developed a tumor. Moreover these tumors were significantly smaller than those generated by PC3.pGIPZ control xenografts. We found 823 genes differentially expressed in shCtBP1 tumors from HFD-fed mice. GSEA from expression dataset showed that most of these genes correspond to cell adhesion, metabolic process, and cell cycle. CONCLUSIONS Metabolic syndrome-like diseases and CtBP1 expression cooperate to induce prostate tumor growth. Hence, targeting of CtBP1 expression might be considered for prostate cancer management and therapy in the subset of patients with metabolic syndromes.
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Affiliation(s)
- Cristian P Moiola
- Laboratorio de Oncología Molecular y Nuevos Blancos Terapéuticos, IBYME-CONICET; Laboratorio de Inflamación y Cáncer, Departamento de Química Biologica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET
| | - Paola De Luca
- Laboratorio de Oncología Molecular y Nuevos Blancos Terapéuticos, IBYME-CONICET; Laboratorio de Inflamación y Cáncer, Departamento de Química Biologica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET
| | - Florencia Zalazar
- Laboratorio de Oncología Molecular y Nuevos Blancos Terapéuticos, IBYME-CONICET; Laboratorio de Inflamación y Cáncer, Departamento de Química Biologica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET
| | - Javier Cotignola
- Laboratorio de Inflamación y Cáncer, Departamento de Química Biologica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET
| | - Santiago A Rodríguez-Seguí
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), and Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET
| | - Kevin Gardner
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Roberto Meiss
- Departamento de Patología, Instituto de Estudios Oncológicos, Academia Nacional de Medicina
| | - Pablo Vallecorsa
- Departamento de Patología, Instituto de Estudios Oncológicos, Academia Nacional de Medicina
| | - Omar Pignataro
- Laboratorio de Endocrinología Molecular y Transducción de Señales, IBYME-CONICET, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET
| | - Osvaldo Mazza
- Hospital de Clínicas "José de San Martín", Buenos Aires, Argentina; and
| | - Elba S Vazquez
- Laboratorio de Inflamación y Cáncer, Departamento de Química Biologica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET
| | - Adriana De Siervi
- Laboratorio de Oncología Molecular y Nuevos Blancos Terapéuticos, IBYME-CONICET; Laboratorio de Inflamación y Cáncer, Departamento de Química Biologica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), IQUIBICEN - CONICET;
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