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Suhre K. Genetic associations with ratios between protein levels detect new pQTLs and reveal protein-protein interactions. CELL GENOMICS 2024; 4:100506. [PMID: 38412862 PMCID: PMC10943581 DOI: 10.1016/j.xgen.2024.100506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/25/2023] [Accepted: 01/26/2024] [Indexed: 02/29/2024]
Abstract
Protein quantitative trait loci (pQTLs) are an invaluable source of information for drug target development because they provide genetic evidence to support protein function, suggest relationships between cis- and trans-associated proteins, and link proteins to disease endpoints. Using Olink proteomics data for 1,463 proteins measured in over 54,000 samples of the UK Biobank, we identified 4,248 associations with 2,821 ratios between protein levels (rQTLs). rQTLs were 7.6-fold enriched in known protein-protein interactions, suggesting that their ratios reflect biological links between the implicated proteins. Conducting a GWAS on ratios increased the number of discovered genetic signals by 24.7%. The approach can identify novel loci of clinical relevance, support causal gene identification, and reveal complex networks of interacting proteins. Taken together, our study adds significant value to the genetic insights that can be derived from the UKB proteomics data and motivates the wider use of ratios in large-scale GWAS.
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Affiliation(s)
- Karsten Suhre
- Bioinformatics Core, Weill Cornell Medicine-Qatar, Education City, Doha 24144, Qatar; Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10021, USA.
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2
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Feitelson MA, Arzumanyan A, Medhat A, Spector I. Short-chain fatty acids in cancer pathogenesis. Cancer Metastasis Rev 2023; 42:677-698. [PMID: 37432606 PMCID: PMC10584782 DOI: 10.1007/s10555-023-10117-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/05/2023] [Indexed: 07/12/2023]
Abstract
Cancer is a multi-step process that can be viewed as a cellular and immunological shift away from homeostasis in response to selected infectious agents, mutations, diet, and environmental carcinogens. Homeostasis, which contributes importantly to the definition of "health," is maintained, in part by the production of short-chain fatty acids (SCFAs), which are metabolites of specific gut bacteria. Alteration in the composition of gut bacteria, or dysbiosis, is often a major risk factor for some two dozen tumor types. Dysbiosis is often characterized by diminished levels of SCFAs in the stool, and the presence of a "leaky gut," permitting the penetration of microbes and microbial derived molecules (e.g., lipopolysaccharides) through the gut wall, thereby triggering chronic inflammation. SCFAs attenuate inflammation by inhibiting the activation of nuclear factor kappa B, by decreasing the expression of pro-inflammatory cytokines such as tumor necrosis factor alpha, by stimulating the expression of anti-inflammatory cytokines such as interleukin-10 and transforming growth factor beta, and by promoting the differentiation of naïve T cells into T regulatory cells, which down-regulate immune responses by immunomodulation. SCFA function epigenetically by inhibiting selected histone acetyltransferases that alter the expression of multiple genes and the activity of many signaling pathways (e.g., Wnt, Hedgehog, Hippo, and Notch) that contribute to the pathogenesis of cancer. SCFAs block cancer stem cell proliferation, thereby potentially delaying or inhibiting cancer development or relapse by targeting genes and pathways that are mutated in tumors (e.g., epidermal growth factor receptor, hepatocyte growth factor, and MET) and by promoting the expression of tumor suppressors (e.g., by up-regulating PTEN and p53). When administered properly, SCFAs have many advantages compared to probiotic bacteria and fecal transplants. In carcinogenesis, SCFAs are toxic against tumor cells but not to surrounding tissue due to differences in their metabolic fate. Multiple hallmarks of cancer are also targets of SCFAs. These data suggest that SCFAs may re-establish homeostasis without overt toxicity and either delay or prevent the development of various tumor types.
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Affiliation(s)
- Mark A Feitelson
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, 19122, USA.
| | - Alla Arzumanyan
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, 19122, USA
| | - Arvin Medhat
- Department of Molecular Cell Biology, Islamic Azad University Tehran North Branch, Tehran, 1975933411, Iran
| | - Ira Spector
- SFA Therapeutics, Jenkintown, PA, 19046, USA
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3
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Hou M, Leng Y, Shi Y, Tan Z, Min X. Astragalus membranaceus as a Drug Candidate for Inflammatory Bowel Disease: The Preclinical Evidence. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2023; 51:1501-1526. [PMID: 37530507 DOI: 10.1142/s0192415x23500684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Inflammatory bowel disease (IBD) is a group of chronic inflammatory disorders that include Crohn's disease (CD) and ulcerative colitis (UC). Today, IBD has no successful treatment. As a result, it is of paramount importance to develop novel therapeutic agents for IBD prevention and treatment. Astragalus membranaceus (AMS) is a traditional Chinese medicine found in the AMS root. Modern pharmacological studies indicate that AMS and its constituents exhibit multiple bioactivities, such as anti-inflammatory, anti-oxidant, immune regulatory, anticancer, hypolipidemic, hypoglycemic, hepatoprotective, expectorant, and diuretic effects. AMS and its active constituents, which have been reported to be effective in IBD treatment, are believed to be viable candidate drugs for IBD treatment. These underlying mechanisms are associated with anti-inflammation, anti-oxidation, immunomodulation, intestinal epithelial repair, gut microbiota homeostasis, and improved energy metabolism. In this review, we summarize the efficacy and underlying mechanisms involved in IBD treatment with AMS and its active constituents in preclinical studies.
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Affiliation(s)
- Min Hou
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yufang Leng
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, P. R. China
- Department of Anesthesiology, The First Hospital of Lanzhou University, Lanzhou 730000, P. R. China
| | - Yajing Shi
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhiguo Tan
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiangzhen Min
- Department of Anesthesiology, The First Hospital of Lanzhou University, Lanzhou 730000, P. R. China
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Rodrat M, Wongdee K, Chankamngoen W, Teerapornpuntakit J, Thongbunchoo J, Tanramluk D, Charoenphandhu N. Modulation of fibroblast growth factor-23 expression and transepithelial calcium absorption in Caco-2 monolayer by calcium-sensing receptor and calcineurin under calcium hyperabsorptive state. Biochem Biophys Res Commun 2023; 659:105-112. [PMID: 37060830 DOI: 10.1016/j.bbrc.2023.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/20/2023] [Accepted: 04/06/2023] [Indexed: 04/17/2023]
Abstract
Fibroblast growth factor (FGF)-23 and calcium-sensing receptor (CaSR) have previously been postulated to be parts of a negative feedback regulation of the intestinal calcium absorption to prevent excessive calcium uptake and its toxicity. However, the underlying mechanism of this feedback regulation remained elusive, especially whether it required transcription of FGF-23. Herein, we induced calcium hyperabsorptive state (CHS) by exposing intestinal epithelium-like Caco-2 monolayer to 30 mM CaCl2 and 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] after which FGF-23 mRNA levels and transepithelial calcium flux were determined. We found that CHS upregulated FGF-23 transcription, which was reverted by CaSR inhibitors (Calhex-231 and NPS2143) but without effect on CaSR transcription. Although 10 nM 1,25(OH)2D3 was capable of enhancing transepithelial calcium flux, the higher-than-normal calcium inundation as in CHS led to a decrease in calcium flux, consistent with an increase in FGF-23 protein expression. Administration of inhibitors (≤10 μM CN585 and cyclosporin A) of calcineurin, a mediator of CaSR action to control transcription and production of its target proteins, was found to partially prevent FGF-23 protein production and the negative effect of CHS on calcium transport, while having no effect on FGF-23 mRNA expression. Direct exposure to FGF-23, but not FGF-23 + PD173074 (FGFR1/3 inhibitor), also completely abolished the 1,25(OH)2D3-enhanced calcium transport in Caco-2 monolayer. Nevertheless, CHS and CaSR inhibitors had no effect on the mRNA levels of calcineurin (PPP3CB) or its targets (i.e., NFATc1-4). In conclusion, exposure to CHS induced by high apical calcium and 1,25(OH)2D3 triggered a negative feedback mechanism to prevent further calcium uptake. CaSR and its downstream mediator, calcineurin, possibly contributed to the regulatory process, in part by enhancing FGF-23 production to inhibit calcium transport. Our study, therefore, corroborated the physiological significance of CaSR-autocrine FGF-23 axis as a local feedback loop for prevention of excessive calcium uptake.
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Affiliation(s)
- Mayuree Rodrat
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand; Center of Research and Development for Biomedical Instrumentation, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Kannikar Wongdee
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand; Faculty of Allied Health Sciences, Burapha University, Chonburi, Thailand
| | - Wasutorn Chankamngoen
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand; Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Jarinthorn Teerapornpuntakit
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Jirawan Thongbunchoo
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Duangrudee Tanramluk
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand; Integrative Computational BioScience (ICBS) Center, Mahidol University, Nakhon Pathom, Thailand
| | - Narattaphol Charoenphandhu
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand; Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand; The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand.
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5
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Macchi R, Sotelo AD, Parrado AC, Salaverry LS, Blanco GA, Castro MS, Rey-Roldán EB, Canellada AM. Losartan impairs HTR-8/SVneo trophoblast migration through inhibition of angiotensin II-induced pro-inflammatory profile in human endometrial stromal cells. Toxicol Appl Pharmacol 2023; 461:116383. [PMID: 36682589 DOI: 10.1016/j.taap.2023.116383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/29/2022] [Accepted: 01/16/2023] [Indexed: 01/21/2023]
Abstract
A deep interaction between the endometrium and the invading trophoblast occurs during implantation in humans, with the acquisition of uterine receptivity to the invading embryo promoted by an elevation of pro-inflammatory cytokines in the endometrium, and the invasiveness of decidualizing endometrial stromal cells, augmented by trophoblast-derived signals. Considering that usage of angiotensin II type 1 (AT1) receptor blockers, among other renin-angiotensin system (RAS) antagonists, is associated with adverse pregnancy outcomes, here we aim to analyse the involvement of AT1 receptor in the reciprocal dialogue occurring between endometrial stroma and trophoblast cells. In human endometrial stromal cells (T-HESC) pre-incubated with a decidualization cocktail, angiotensin (Ang) II increased protein expression of prolactin and FOXO1, markers of endometrial decidualization, while promoting nuclear translocation of FOXO1. In addition, Ang II treatment increased CXCL8, and matrix metalloprotease (MMP)-2 levels in T-HESC. Incubation with the AT1 receptor blocker losartan or with an NFAT signalling inhibitor, decreased Ang II-induced secretion of prolactin, CXCL8, and MMP-2 in T-HESC. In a wound healing assay, conditioned medium (CM) obtained from Ang II-treated T-HESC, but not CM from losartan-pre-incubated T-HESC, increased migration of HTR-8/SVneo trophoblasts, effect that was inhibited in the presence of a CXCL8-neutralizing antibody. An increased secretion of CXCL8 and MMP-2 was observed after treatment of T-HESC with CM obtained from HTR-8/SVneo cells, which was not observed in T-HESC pre-incubated with losartan or with the NFAT inhibitor. This study evidenced a reciprocal RAS-coded messaging between trophoblast and ESC which is affected by the AT1 receptor blocker losartan.
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Affiliation(s)
- Rosario Macchi
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Agustina D Sotelo
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Andrea C Parrado
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Luciana S Salaverry
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Guillermo A Blanco
- Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Marisa S Castro
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Estela B Rey-Roldán
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina
| | - Andrea M Canellada
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Inmunología, Junín 956, Buenos Aires C1113AAD, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Estudios de la Inmunidad Humoral "Prof. Dr. Ricardo A. Margni", Junín 956, Buenos Aires C1113AAD, Argentina.
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6
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Chu L, Terasaki M, Mattsson CL, Teinturier R, Charbord J, Dirice E, Liu KC, Miskelly MG, Zhou Q, Wierup N, Kulkarni RN, Andersson O. In vivo drug discovery for increasing incretin-expressing cells identifies DYRK inhibitors that reinforce the enteroendocrine system. Cell Chem Biol 2022; 29:1368-1380.e5. [PMID: 35998625 PMCID: PMC9557248 DOI: 10.1016/j.chembiol.2022.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 02/27/2022] [Accepted: 07/27/2022] [Indexed: 02/02/2023]
Abstract
Analogs of the incretin hormones Gip and Glp-1 are used to treat type 2 diabetes and obesity. Findings in experimental models suggest that manipulating several hormones simultaneously may be more effective. To identify small molecules that increase the number of incretin-expressing cells, we established a high-throughput in vivo chemical screen by using the gip promoter to drive the expression of luciferase in zebrafish. All hits increased the numbers of neurogenin 3-expressing enteroendocrine progenitors, Gip-expressing K-cells, and Glp-1-expressing L-cells. One of the hits, a dual-specificity tyrosine phosphorylation-regulated kinase (DYRK) inhibitor, additionally decreased glucose levels in both larval and juvenile fish. Knock-down experiments indicated that nfatc4, a downstream mediator of DYRKs, regulates incretin+ cell number in zebrafish, and that Dyrk1b regulates Glp-1 expression in an enteroendocrine cell line. DYRK inhibition also increased the number of incretin-expressing cells in diabetic mice, suggesting a conserved reinforcement of the enteroendocrine system, with possible implications for diabetes.
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Affiliation(s)
- Lianhe Chu
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Michishige Terasaki
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Charlotte L Mattsson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Romain Teinturier
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jérémie Charbord
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Ercument Dirice
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
| | - Ka-Cheuk Liu
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Michael G Miskelly
- Department of Clinical Sciences, Lund University Diabetes Centre, Malmö 20502, Sweden
| | - Qiao Zhou
- Division of Regenerative Medicine & Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA
| | - Nils Wierup
- Department of Clinical Sciences, Lund University Diabetes Centre, Malmö 20502, Sweden
| | - Rohit N Kulkarni
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA 02215, USA; Harvard Stem Cell Institute, Boston, MA 02215, USA
| | - Olov Andersson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden.
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7
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Zhong QH, Zha SW, Lau ATY, Xu YM. Recent knowledge of NFATc4 in oncogenesis and cancer prognosis. Cancer Cell Int 2022; 22:212. [PMID: 35698138 PMCID: PMC9190084 DOI: 10.1186/s12935-022-02619-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 05/20/2022] [Indexed: 02/05/2023] Open
Abstract
Nuclear factor of activated T-cells, cytoplasmic 4 (NFATc4), a transcription factor of NFAT family, which is activated by Ca2+/calcineurin signaling. Recently, it is reported that aberrantly activated NFATc4 participated and modulated in the initiation, proliferation, invasion, and metastasis of various cancers (including cancers of the lung, breast, ovary, cervix, skin, liver, pancreas, as well as glioma, primary myelofibrosis and acute myelocytic leukemia). In this review, we cover the latest knowledge on NFATc4 expression pattern, post-translational modification, epigenetic regulation, transcriptional activity regulation and its downstream targets. Furthermore, we perform database analysis to reveal the prognostic value of NFATc4 in various cancers and discuss the current unexplored areas of NFATc4 research. All in all, the result from these studies strongly suggest that NFATc4 has the potential as a molecular therapeutic target in multiple human cancer types.
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Affiliation(s)
- Qiu-Hua Zhong
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, 22 Xinling Road, Shantou, Guangdong 515041 People’s Republic of China
| | - Si-Wei Zha
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, 22 Xinling Road, Shantou, Guangdong 515041 People’s Republic of China
| | - Andy T. Y. Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, 22 Xinling Road, Shantou, Guangdong 515041 People’s Republic of China
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, 22 Xinling Road, Shantou, Guangdong 515041 People’s Republic of China
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8
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Seligson ND, Maradiaga RD, Stets CM, Katzenstein HM, Millis SZ, Rogers A, Hays JL, Chen JL. Multiscale-omic assessment of EWSR1-NFATc2 fusion positive sarcomas identifies the mTOR pathway as a potential therapeutic target. NPJ Precis Oncol 2021; 5:43. [PMID: 34021224 PMCID: PMC8140100 DOI: 10.1038/s41698-021-00177-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 04/16/2021] [Indexed: 12/19/2022] Open
Abstract
Sarcomas harboring EWSR1-NFATc2 fusions have historically been categorized and treated as Ewing sarcoma. Emerging evidence suggests unique molecular characteristics and chemotherapy sensitivities in EWSR1-NFATc2 fusion positive sarcomas. Comprehensive genomic profiles of 1024 EWSR1 fusion positive sarcomas, including 14 EWSR1-NFATc2 fusions, were identified in the FoundationCore® database. Additional data from the Gene Expression Omnibus, the Genomics of Drug Sensitivity in Cancer and The Cancer Genome Atlas datasets were included for analysis. EWSR1-NFATc2 fusion positive sarcomas were genomically distinct from traditional Ewing sarcoma and demonstrated upregulation of the mTOR pathway. We also present a case of a 58-year-old male patient with metastatic EWSR1-NFATc2 fusion positive sarcoma who achieved 47 months of disease stabilization when treated with combination mTOR and VEGF inhibition. EWSR1-NFATc2 fusion positive sarcomas are molecularly distinct entities with overactive mTOR signaling; which may be therapeutically targetable. These findings support the use of precision medicine in the Ewing family of tumors.
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Affiliation(s)
- Nathan D Seligson
- Department of Pharmacotherapy and Translational Research, The University of Florida, Jacksonville, FL, USA.,Department of Pharmacogenomics and Translational Research, Nemours Children's Specialty Care, Jacksonville, FL, USA.,Division of Pediatric Hematology/Oncology, Department of Pediatrics, Nemours Children's Specialty Care, Jacksonville, FL, USA
| | - Richard D Maradiaga
- The Ohio State University Wexner Medical Center and Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Colin M Stets
- The Ohio State University Wexner Medical Center and Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Howard M Katzenstein
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Nemours Children's Specialty Care, Jacksonville, FL, USA
| | | | - Alan Rogers
- Department of Radiology, The Ohio State University, Columbus, OH, USA
| | - John L Hays
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, The Ohio State University, Columbus, OH, USA
| | - James L Chen
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA. .,Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA.
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9
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Wang Y, Zhou X, Zou K, Chen G, Huang L, Yang F, Pan W, Xu H, Xu Z, Chen H, Chen J, Gong S, Zhou X, Xu W, Zhao J. Monocarboxylate Transporter 4 Triggered Cell Pyroptosis to Aggravate Intestinal Inflammation in Inflammatory Bowel Disease. Front Immunol 2021; 12:644862. [PMID: 34093533 PMCID: PMC8170300 DOI: 10.3389/fimmu.2021.644862] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/26/2021] [Indexed: 01/17/2023] Open
Abstract
NLRP3 inflammasome has emerged as a crucial regulator of inflammatory bowel disease (IBD) characterized by a chronic inflammatory disease of the gastrointestinal tract. The expression of MCT4 is significantly increased in intestinal mucosal tissue of IBD, which has been identified to regulate intestinal barrier function. However, the function of MCT4 in cell pyroptosis remained unknown. In this study, we have established a stable cell line with MCT4 overexpression in HT-29 and CaCO2 cells, respectively. Functional analysis revealed that ectopic expression of MCT4 in CaCO2 cells contributed to cell pyroptosis as evidenced by LDH assay, which is largely attributed to Caspase-1-mediated canonical pyroptosis, but not Caspase-4 and Caspase-5, leading to cleave pro-IL-1β and IL-18 into mature form and release mediated by cleaved GSDMD. Mechanically, MCT4 overexpression in HT-29 and CaCO2 cell triggered the phosphorylation of ERK1/2 and NF-κB p65, while inhibition of MCT4 by MCT inhibitor α-Cyano-4-hydroxycinnamic acid (α-CHCA) in HT-29 and CaCO2 cells led to a significant downregulation of ERK1/2 and NF-κB activity. What’s more, blockade of ERK1/2-NF-κB pathway could reverse the promotion effect of MCT4 on IL-1β expression. Importantly, both MCT4 and Caspase-1, GSDMD were significantly increased in patients with IBD, and a positive clinical correlation between MCT4 and Caspase-1 expression was observed (p < 0.001). Taken together, these findings suggested that MCT4 promoted Caspase-1-mediated canonical cell pyroptosis to aggravate intestinal inflammation in intestinal epithelial cells (IECs) through the ERK1/2-NF-κB pathway.
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Affiliation(s)
- Yaodong Wang
- Department of Gastroenterology, Kunshan Hospital of Traditional Chinese Medicine, Kunshan Affiliated Hospital of Nanjing University of Chinese Medicine, Kunshan, China
| | - Xiaorong Zhou
- Department of Respiratory and Critical Care, The Fifth Affiliated Hospital Sun Yat-Sen University, Zhuhai, China
| | - Kejian Zou
- Department of General Surgery, Hainan General Hospital, Haikou, China
| | - Guanhua Chen
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Ling Huang
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Fangying Yang
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Wenxu Pan
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Hongwei Xu
- Department of Gastroenterology, Kunshan Hospital of Traditional Chinese Medicine, Kunshan Affiliated Hospital of Nanjing University of Chinese Medicine, Kunshan, China
| | - Zhaohui Xu
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huan Chen
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Jiayu Chen
- Department of Neonatal Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Sitang Gong
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Xuan Zhou
- Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Wanfu Xu
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Junhong Zhao
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
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Zhu H, Guo Y, Wang X, Zhu M, Lei J, Xiao Y, Xie J, Zhao L. The Action of Shenmai Injection on the Inflammation and Proliferation of Smooth Muscle Cells of the Airway in Asthmatic Rats. J BIOMATER TISS ENG 2021. [DOI: 10.1166/jbt.2021.2409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To observe the effect of transient receptor potential ankyrin 1 (TRPA1) channel on the proliferation and inflammation of airway smooth muscle cells (SMC) in asthmatic rats, the rats were randomly allocated into three treatment groups: control, asthma, and Shenmai injection (SMI), with
15 rats in each group. Asthmatic rat models were induced by ovalbumin (OVA) inhalation. Rats in the control and asthma groups were intraperitoneally injected 2 mL NS daily, whereas rats in the SMI treatment group were intraperitoneally injected with 2 mL SMI daily. RT-qPCR and western blotting
were used to test for TRPA1 and proliferating cell nuclear antigen (PCNA) mRNA and protein expression. ELISA was used to test the expression of interleukin-4 (IL-4), interleukin-5 (IL-5), and interleukin-13 (IL-13) in the serum. Compared with the control group, there were significantly higher
levels of TRPA1 and PCNA mRNA and protein, as well as of IL-4, IL-5, and IL-13 in asthmatic rats (P< 0.05). After SMI treatment, there was significantly lower expression of TRPA1, PCNA, IL-4, IL-5, and IL-13 compared to the levels in asthmatic rats (P < 0.05). TRPA1, IL-4,
IL-5, and IL-13 were highly expressed in the tracheal SMC of asthmatic rats. Inhibiting TRPA1, IL-4, IL-5, and IL-13 using SMI may be one of the mechanisms that can intervene chronic airway inflammation and asthma proliferation.
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Affiliation(s)
- He Zhu
- Department of Respiratory and Critical Care Medicine, People’s Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Yali Guo
- Department of Respiratory and Critical Care Medicine, Henan Key Laboratory for Respiratory, Henan Provincial People’s Hospital; Zhengzhou University People’s Hospital, Zhengzhou, Henan, 450003, China
| | - Xiaoli Wang
- Department of Respiratory and Critical Care Medicine, Henan Key Laboratory for Respiratory, Henan Provincial People’s Hospital; Zhengzhou University People’s Hospital, Zhengzhou, Henan, 450003, China
| | - Min Zhu
- Department of Respiratory and Critical Care Medicine, Henan Key Laboratory for Respiratory, Henan Provincial People’s Hospital; Zhengzhou University People’s Hospital, Zhengzhou, Henan, 450003, China
| | - Jiahui Lei
- Department of Respiratory and Critical Care Medicine, People’s Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Yali Xiao
- Department of Respiratory and Critical Care Medicine, People’s Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Jing Xie
- Department of Respiratory and Critical Care Medicine, People’s Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Limin Zhao
- Department of Respiratory and Critical Care Medicine, Henan Key Laboratory for Respiratory, Henan Provincial People’s Hospital; Zhengzhou University People’s Hospital, Zhengzhou, Henan, 450003, China
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11
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Mechanisms regulating myoblast fusion: A multilevel interplay. Semin Cell Dev Biol 2020; 104:81-92. [PMID: 32063453 DOI: 10.1016/j.semcdb.2020.02.004] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/07/2020] [Accepted: 02/08/2020] [Indexed: 02/07/2023]
Abstract
Myoblast fusion into myotubes is one of the crucial steps of skeletal muscle development (myogenesis). The fusion is preceded by specification of a myogenic lineage (mesodermal progenitors) differentiating into myoblasts and is followed by myofiber-type specification and neuromuscular junction formation. Similarly to other processes of myogenesis, the fusion requires a very precise spatial and temporal regulation occuring both during embryonic development as well as regeneration and repair of the muscle. A plethora of genes and their products is involved in regulation of myoblast fusion and a precise multilevel interplay between them is crucial for myogenic cells to fuse. In this review, we describe both cellular events taking place during myoblast fusion (migration, adhesion, elongation, cell-cell recognition, alignment, and fusion of myoblast membranes enabling formation of myotubes) as well as recent findings on mechanisms regulating this process. Also, we present muscle disorders in humans that have been associated with defects in genes involved in regulation of myoblast fusion.
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Disatham J, Chauss D, Gheyas R, Brennan L, Blanco D, Daley L, Menko AS, Kantorow M. Lens differentiation is characterized by stage-specific changes in chromatin accessibility correlating with differentiation state-specific gene expression. Dev Biol 2019; 453:86-104. [PMID: 31136738 PMCID: PMC6667291 DOI: 10.1016/j.ydbio.2019.04.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/16/2019] [Accepted: 04/16/2019] [Indexed: 11/24/2022]
Abstract
Changes in chromatin accessibility regulate the expression of multiple genes by controlling transcription factor access to key gene regulatory sequences. Here, we sought to establish a potential function for altered chromatin accessibility in control of key gene expression events during lens cell differentiation by establishing genome-wide chromatin accessibility maps specific for four distinct stages of lens cell differentiation and correlating specific changes in chromatin accessibility with genome-wide changes in gene expression. ATAC sequencing was employed to generate chromatin accessibility profiles that were correlated with the expression profiles of over 10,000 lens genes obtained by high-throughput RNA sequencing at the same stages of lens cell differentiation. Approximately 90,000 regions of the lens genome exhibited distinct changes in chromatin accessibility at one or more stages of lens differentiation. Over 1000 genes exhibited high Pearson correlation coefficients (r > 0.7) between altered expression levels at specific stages of lens cell differentiation and changes in chromatin accessibility in potential promoter (-7.5kbp/+2.5kbp of the transcriptional start site) and/or other potential cis-regulatory regions ( ±10 kb of the gene body). Analysis of these regions identified consensus binding sequences for multiple transcription factors including members of the TEAD, FOX, and NFAT families of transcription factors as well as HIF1a, RBPJ and IRF1. Functional mapping of genes with high correlations between altered chromatin accessibility and differentiation state-specific gene expression changes identified multiple families of proteins whose expression could be regulated through changes in chromatin accessibility including those governing lens structure (BFSP1,BFSP2), gene expression (Pax-6, Sox 2), translation (TDRD7), cell-cell communication (GJA1), autophagy (FYCO1), signal transduction (SMAD3, EPHA2), and lens transparency (CRYBB1, CRYBA4). These data provide a novel relationship between altered chromatin accessibility and lens differentiation and they identify a wide-variety of lens genes and functions that could be regulated through altered chromatin accessibility. The data also point to a large number of potential DNA regulatory sequences and transcription factors whose functional analysis is likely to provide insight into novel regulatory mechanisms governing the lens differentiation program.
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Affiliation(s)
- Joshua Disatham
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - Daniel Chauss
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Rifah Gheyas
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lisa Brennan
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - David Blanco
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - Lauren Daley
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - A Sue Menko
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Marc Kantorow
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA.
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Analyses of miRNA in the ileum of diarrheic piglets caused by Clostridium perfringens type C. Microb Pathog 2019; 136:103699. [PMID: 31472261 DOI: 10.1016/j.micpath.2019.103699] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/28/2019] [Accepted: 08/27/2019] [Indexed: 12/26/2022]
Abstract
Clostridium perfringens (C. perfringens) type C is one of major pathogenic causing diarrhea and other intestinal inflammatory diseases in piglets, which seriously affects the healthy development of the swine industries. Studies have found that miRNAs play important roles in regulating piglet diarrhea challenged by pathogenic E. coli and Salmonella. However, little is known miRNAs in the ileum of diarrheic piglets caused by C. perfringens type C. Therefore, we studied the expression profiles of the ileum miRNAs of 7-day-old piglets infected with C. perfringens type C using small RNA-Seq, including control (IC), susceptible (IS) and resistant (IR) groups. As a result, 53 differentially expressed miRNAs were found. KEGG pathway analysis for target genes revealed that these miRNAs were involved in ErbB signaling pathway, MAPK signaling pathway, Jak-STAT signaling pathway and Wnt signaling pathway. The expression correlation analysis between miRNAs and target genes revealed that the expression of miR-7134-5p had negative correlation with target NFATC4, miR-500 had negative correlation with target ELK1, HSPA2 and IL7R, and miR-92b-3p had negative correlation with target CLCF1 in ileum of IR vs IS group, suggesting that miR-7134-5p targeting to NFATC4, miR-500 targeting to ELK1, HSPA2 and IL7R, and miR-92b-3p targeting to CLCF1 were probably involved in piglet resisting C. perfringens type C. The results will provide value resources for better understanding of the genetic basis of C. perfringens type C resistance in piglet and lays a new foundation for identifying novel markers of C. perfringens type C resistance.
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Al-Attar R, Storey KB. Effects of anoxic exposure on the nuclear factor of activated T cell (NFAT) transcription factors in the stress-tolerant wood frog. Cell Biochem Funct 2018; 36:420-430. [PMID: 30411386 DOI: 10.1002/cbf.3362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 08/15/2018] [Accepted: 10/03/2018] [Indexed: 11/08/2022]
Abstract
The wood frog, Lithobates sylvaticus (also known as Rana sylvatica), is used for studying natural freeze tolerance. These animals convert 65% to 70% of their total body water into extracellular ice and survive freezing for weeks in winter. Freezing interrupts oxygen delivery to organs; thus, wood frogs limit their ATP usage by depressing their metabolism and redirecting the available energy only to prosurvival processes. Here, we studied the nuclear factor of activated T cell (NFAT) transcription factor family in response to 24-hour anoxia, and 4-hour aerobic recovery in liver and skeletal muscle. Protein expression levels of NFATc1-c4, calcineurin A and glycogen synthase kinase 3β (NFAT regulators), osteopontin, and atrial natriuretic peptide (ANP) (targets of NFATc3 and NFATc4, respectively) were measured by immunoblotting, and the DNA-binding activities of NFATc1-c4 were measured by DNA-protein interaction ELISAs. Results show that NFATc4, calcineurin, and ANP protein expression as well as NFATc4 DNA binding increased during anoxia in liver where calcineurin and ANP protein levels and NFATc4 DNA binding remaining high after aerobic recovery. Anoxia caused a significant increase in NFATc3 protein expression but not DNA-binding activity in muscle. Our results show that anoxia can increase NFATc4 transcriptional activity in liver, leading to the increase in expression of cytoprotective genes in the wood frog. Understanding the molecular mechanisms involved in mediating survival under anoxia/reoxygenation conditions in a naturally stress-tolerant model, such as the wood frog, provides insightful information on the prosurvival regulatory mechanisms involved in combating stress. This information will also further our understanding of metabolic rate depression and answer the question of how frogs tolerate prolonged periods of oxygen deprivation and resume to full function upon recovery without facing any detrimental side effects as other animals would.
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Affiliation(s)
- Rasha Al-Attar
- Institude of Biochemistry and Department of Biology, Carleton University, Ottawa, Canada
| | - Kenneth B Storey
- Institude of Biochemistry and Department of Biology, Carleton University, Ottawa, Canada
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15
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Targeting PTEN in Colorectal Cancers. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1110:55-73. [DOI: 10.1007/978-3-030-02771-1_5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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16
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Sato S, Nakamura T, Katagiri T, Tsuchikawa T, Kushibiki T, Hontani K, Takahashi M, Inoko K, Takano H, Abe H, Takeuchi S, Ono M, Kuwabara S, Umemoto K, Suzuki T, Sato O, Nakamura Y, Hirano S. Molecular targeting of cell-permeable peptide inhibits pancreatic ductal adenocarcinoma cell proliferation. Oncotarget 2017; 8:113662-113672. [PMID: 29371937 PMCID: PMC5768354 DOI: 10.18632/oncotarget.21939] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 07/26/2017] [Indexed: 12/18/2022] Open
Abstract
Background Chromosome 16 open reading frame 74 (C16orf74) is highly expressed in pancreatic ductal adenocarcinoma (PDAC) and is involved in cancer cell proliferation and invasion through binding to calcineurin (CN). Therefore, C16orf74 is a good target for the development of a PDAC treatment. A cell-permeable dominant-negative (DN) peptide that can inhibit the C16orf74/CN interaction was designed to examine whether this peptide can inhibit PDAC cell proliferation in vitro and in vivo. Method TheDN-C16orf74 peptide, which corresponds to the portion of C16orf74 that interacts with CN, was synthesized, and we assessed its anti-tumor activity in proliferation assays with human PDAC cells and the underlying molecular signaling pathway. Using an orthotopic xenograft model of PDAC, we treated mice intraperitoneally with phosphate-buffered saline (PBS), control peptide, or DN-C16orf74 and analyzed the tumor-suppressive effects. Result DN-C16orf74 inhibited the binding of C16orf74 to CN in an immunoprecipitation assay. DN-C16orf74 suppressed PDAC cell proliferation, and the level of suppression depended on the expression levels of C16orf74 in vitro. DN-C16orf74 also exhibited anti-tumor effects in orthotopic xenograft model. Furthermore, the tumor-suppressive effect was associated with inhibition of the phosphorylation of Akt and mTOR. Conclusion The cell-permeable peptide DN-C16orf74 has a strong anti-tumor effect against PDAC in vitro and in vivo.
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Affiliation(s)
- Shoki Sato
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Toru Nakamura
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Toyomasa Katagiri
- Division of Genome Medicine, Institute for Genome Research, Tokushima University, Tokushima, Japan
| | - Takahiro Tsuchikawa
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Toshihiro Kushibiki
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kouji Hontani
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Mizuna Takahashi
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kazuho Inoko
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Hironobu Takano
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Hirotake Abe
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Shintaro Takeuchi
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Masato Ono
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Shota Kuwabara
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kazufumi Umemoto
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Tomohiro Suzuki
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Osamu Sato
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yusuke Nakamura
- Department of Medicine and Surgery, The University of Chicago, Chicago, IL, USA
| | - Satoshi Hirano
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Santana AL, Felsen D, Carucci JA. Interleukin-22 and Cyclosporine in Aggressive Cutaneous Squamous Cell Carcinoma. Dermatol Clin 2017; 35:73-84. [PMID: 27890239 PMCID: PMC5409835 DOI: 10.1016/j.det.2016.07.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cutaneous squamous cell carcinomas (SCCs) account for up to 10,000 deaths annually in the United States. Most of the more than 700,000 SCCs diagnosed are cured by excision with clear margins; however, metastasis can occur despite seemingly adequate treatment in some cases. Immune-suppressed organ transplant recipients are 60 to 100 times more likely to develop SCC than immune-competent individuals. Transplant-associated SCCs occur more frequently and behave more aggressively, showing higher risk of recurrence and metastasis. This article identifies a potential role for interleukin-22 in driving SCC proliferation, particularly in solid organ transplant recipients taking cyclosporine.
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Affiliation(s)
- Alexis L Santana
- The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, 522 First Avenue, New York, NY 10016, USA
| | - Diane Felsen
- Institute for Pediatric Urology, Department of Urology, Weill Cornell Medical College, 1300 York Avenue, Box 94, New York, NY 10065, USA
| | - John A Carucci
- The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, 522 First Avenue, New York, NY 10016, USA.
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18
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Ketogenesis contributes to intestinal cell differentiation. Cell Death Differ 2016; 24:458-468. [PMID: 27935584 DOI: 10.1038/cdd.2016.142] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/18/2016] [Accepted: 11/04/2016] [Indexed: 01/01/2023] Open
Abstract
The intestinal epithelium undergoes a continual process of proliferation, differentiation and apoptosis. Previously, we have shown that the PI3K/Akt/mTOR pathway has a critical role in intestinal homeostasis. However, the downstream targets mediating the effects of mTOR in intestinal cells are not known. Here, we show that the ketone body β-hydroxybutyrate (βHB), an endogenous inhibitor of histone deacetylases (HDACs) induces intestinal cell differentiation as noted by the increased expression of differentiation markers (Mucin2 (MUC2), lysozyme, IAP, sucrase-isomaltase, KRT20, villin, Caudal-related homeobox transcription factor 2 (CDX2) and p21Waf1). Conversely, knockdown of the ketogenic mitochondrial enzyme hydroxymethylglutaryl CoA synthase 2 (HMGCS2) attenuated spontaneous differentiation in the human colon cancer cell line Caco-2. Overexpression of HMGCS2, which we found is localized specifically in the more differentiated portions of the intestinal mucosa, increased the expression of CDX2, thus further suggesting the contributory role of HMGCS2 in intestinal differentiation. In addition, mice fed a ketogenic diet demonstrated increased differentiation of intestinal cells as noted by an increase in the enterocyte, goblet and Paneth cell lineages. Moreover, we showed that either knockdown of mTOR or inhibition of mTORC1 with rapamycin increases the expression of HMGCS2 in intestinal cells in vitro and in vivo, suggesting a possible cross-talk between mTOR and HMGCS2/βHB signaling in intestinal cells. In contrast, treatment of intestinal cells with βHB or feeding mice with a ketogenic diet inhibits mTOR signaling in intestinal cells. Together, we provide evidence showing that HMGCS2/βHB contributes to intestinal cell differentiation. Our results suggest that mTOR acts cooperatively with HMGCS2/βHB to maintain intestinal homeostasis.
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Seo HH, Lee CY, Lee J, Lim S, Choi E, Park JC, Lee S, Hwang KC. The role of nuclear factor of activated T cells during phorbol myristate acetate-induced cardiac differentiation of mesenchymal stem cells. Stem Cell Res Ther 2016; 7:90. [PMID: 27405982 PMCID: PMC4942985 DOI: 10.1186/s13287-016-0348-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 06/03/2016] [Accepted: 06/17/2016] [Indexed: 11/16/2022] Open
Abstract
Background We previously reported that phorbol 12-myristate 13-acetate (PMA) treatment can induce the cardiac differentiation of mesenchymal stem cells (MSCs). In the present study, we investigated how PMA induces cardiac differentiation of MSCs, focusing on its effect on the transcription factors responsible for increased cardiac marker gene expression. Methods Human MSCs (hMSCs) were treated with 1 μM PMA for 9 days. The expression of MSC markers and cardiac markers in the PMA-treated hMSC, as well as the nuclear translocation of transcription factors, nuclear factor of activated T cells (NFAT), and myogenic differentiation 1 (MyoD), was examined. Transcriptional activity of NFAT was examined by utilizing a green fluorescent protein (GFP) vector containing NFAT motif of human interleukin-2 promoter. The effect of PMA on the expression of key cell cycle regulators was examined. Results PMA induces the transcriptional activity of NFAT and MyoD, which have been associated with increased expression of cardiac troponin T (cTnT) and myosin heavy chain (MHC), respectively. Our data suggested that protein kinase C (PKC) mediates the effect of PMA on NFAT activation. Furthermore, PMA treatment increased cell-cycle regulator p27kip1 expression, suggesting that PMA triggers the cardiac differentiation program in MSCs by regulating key transcription factors and cell cycle regulators. Conclusions The results of this study demonstrate the importance of NFAT activation during PMA-induced MSC differentiation and help us to better understand the underlying mechanisms of small molecule-mediated MSC differentiation so that we can develop a strategy for synthesizing novel and improved differentiation-inducing small molecules. Electronic supplementary material The online version of this article (doi:10.1186/s13287-016-0348-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hyang-Hee Seo
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, South Korea
| | - Chang Youn Lee
- Department of Integrated Omics for Biomedical Sciences, Yonsei University, Seoul, South Korea
| | - Jiyun Lee
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, South Korea
| | - Soyeon Lim
- Institute for Bio-medical Convergence, Catholic Kwandong University, Incheon, South Korea
| | - Eunhyun Choi
- Institute for Bio-medical Convergence, Catholic Kwandong University, Incheon, South Korea
| | - Jong-Chul Park
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul, South Korea
| | - Seahyoung Lee
- Institute for Bio-medical Convergence, Catholic Kwandong University, Incheon, South Korea. .,Department of Biomedical Sciences, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, South Korea.
| | - Ki-Chul Hwang
- Institute for Bio-medical Convergence, Catholic Kwandong University, Incheon, South Korea. .,Department of Biomedical Sciences, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, South Korea.
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Dasgupta N, Thakur BK, Ta A, Dutta P, Das S. Suppression of Spleen Tyrosine Kinase (Syk) by Histone Deacetylation Promotes, Whereas BAY61-3606, a Synthetic Syk Inhibitor Abrogates Colonocyte Apoptosis by ERK Activation. J Cell Biochem 2016; 118:191-203. [PMID: 27293079 DOI: 10.1002/jcb.25625] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 06/10/2016] [Indexed: 01/10/2023]
Abstract
Spleen tyrosine kinase (Syk), a non-receptor tyrosine kinase, regulates tumor progression, either negatively or positively, depending on the tissue lineage. Information about the role of Syk in colorectal cancers (CRC) is limited, and conflicting reports have been published. We studied Syk expression and its role in differentiation and apoptosis of the colonocytes. Here, we reported for the first time that expression of two transcript variants of Syk is suppressed in colonocytes during butyrate-induced differentiation, which mediates apoptosis of HT-29 cells. Despite being a known HDAC inhibitor, butyrate deacetylates histone3/4 around the transcription start site (TSS) of Syk. Histone deacetylation precludes the binding of RNA Polymerase II to the promoter and inhibits transcription. Since butyrate is a colonic metabolite derived from undigested fibers, our study offers a plausible explanation of the underlying mechanisms of the protective role of butyrate as well as the dietary fibers against CRC through the regulation of Syk. We also report that combined use of butyrate and highly specific Syk inhibitor BAY61-3606 does not enhance differentiation and apoptosis of colonocytes. Instead, BAY completely abolishes butyrate-induced differentiation and apoptosis in a Syk- and ERK1/2-dependent manner. While butyrate dephosphorylates ERK1/2 in HT-29 cells, BAY re-phosphorylates it, leading to its activation. This study describes a novel mechanism of butyrate action in CRC and explores the role of Syk in butyrate-induced differentiation and apoptosis. In addition, our study highlights those commercial small molecule inhibitors, although attractive drug candidates should be used with concern because of their frequent off-target effects. J. Cell. Biochem. 118: 191-203, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nirmalya Dasgupta
- Department of Clinical Medicine, National Institute of Cholera and Enteric Diseases, P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata 700010, India
| | - Bhupesh Kumar Thakur
- Department of Clinical Medicine, National Institute of Cholera and Enteric Diseases, P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata 700010, India
| | - Atri Ta
- Department of Clinical Medicine, National Institute of Cholera and Enteric Diseases, P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata 700010, India
| | - Pujarini Dutta
- Department of Clinical Medicine, National Institute of Cholera and Enteric Diseases, P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata 700010, India
| | - Santasabuj Das
- Department of Clinical Medicine, National Institute of Cholera and Enteric Diseases, P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata 700010, India
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Pulliam SR, Pellom ST, Shanker A, Adunyah SE. Butyrate regulates the expression of inflammatory and chemotactic cytokines in human acute leukemic cells during apoptosis. Cytokine 2016; 84:74-87. [PMID: 27253488 DOI: 10.1016/j.cyto.2016.05.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 05/12/2016] [Accepted: 05/13/2016] [Indexed: 02/06/2023]
Abstract
Butyrate is a histone deacetylase inhibitor implicated in many studies as a potential therapy for various forms of cancer. High concentrations of butyrate (>1.5mM) have been shown to activate apoptosis in several cancer cell lines including prostate, breast, and leukemia. Butyrate is also known to influence multiple signaling pathways that are mediators of cytokine production. The purpose of this study was to evaluate the impact of high concentrations of butyrate on the cancer microenvironment vis-à-vis apoptosis, cellular migration, and capacity to modulate cytokine expression in cancer cells. The results indicate that high concentrations of butyrate induced a 2-fold activation of caspase-3 and reduced cell viability by 60% in U937 leukemia cells. Within 24h, butyrate significantly decreased the levels of chemokines CCL2 and CCL5 in HL-60 and U937 cells, and decreased CCL5 in THP-1 leukemia cells. Differential effects were observed in treatments with valproic acid for CCL2 and CCL5 indicating butyrate-specificity. Many of the biological effects examined in this study are linked to activation of the AKT and MAPK signaling pathways; therefore, we investigated whether butyrate alters the levels of phosphorylated forms of these signaling proteins and how it correlated with the expression of chemokines. The results show that butyrate may partially regulate CCL5 production via p38 MAPK. The decrease in p-ERK1/2 and p-AKT levels correlated with the decrease in CCL2 production. These data suggest that while promoting apoptosis, butyrate has the potential to influence the cancer microenvironment by inducing differential expression of cytokines.
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Affiliation(s)
- Stephanie R Pulliam
- School of Graduate Studies and Research, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA; Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA
| | - Samuel T Pellom
- School of Graduate Studies and Research, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA; Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA; Department of Microbiology and Immunology, School of Medicine, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA
| | - Anil Shanker
- School of Graduate Studies and Research, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA; Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA; Host-Tumor Interactions Research Program, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN 37232, USA
| | - Samuel E Adunyah
- School of Graduate Studies and Research, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA; Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, 1005 Dr. DB Todd, Jr. Blvd., Nashville, TN 37208, USA.
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22
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Flavaglines Ameliorate Experimental Colitis and Protect Against Intestinal Epithelial Cell Apoptosis and Mitochondrial Dysfunction. Inflamm Bowel Dis 2016; 22:55-67. [PMID: 26398710 PMCID: PMC5600465 DOI: 10.1097/mib.0000000000000592] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Flavaglines are a family of natural compounds shown to have anti-inflammatory and cytoprotective effects in neurons and cardiomyocytes. Flavaglines target prohibitins as ligands, which are scaffold proteins that regulate mitochondrial function, cell survival, and transcription. This study tested the therapeutic potential of flavaglines to promote intestinal epithelial cell homeostasis and to protect against a model of experimental colitis in which inflammation is driven by epithelial ulceration. METHODS Survival and homeostasis of Caco2-BBE and IEC-6 intestinal epithelial cell lines were measured during treatment with the flavaglines FL3 or FL37 alone and in combination with the proinflammatory cytokines tumor necrosis factor (TNF) α and interferon γ. Wild-type mice were intraperitoneally injected with 0.1 mg/kg FL3 or vehicle once daily for 4 days during dextran sodium sulfate-induced colitis to test the in vivo anti-inflammatory effect of FL3. RESULTS FL3 and FL37 increased basal Caco2-BBE and IEC-6 cell viability, decreased apoptosis, and decreased epithelial monolayer permeability. FL3 and FL37 inhibited TNFα- and interferon γ-induced nuclear factor kappa B and Cox2 expression, apoptosis, and increased permeability in Caco2-BBE cells. FL3 and FL37 protected against TNFα-induced mitochondrial superoxide generation by preserving respiratory chain complex I activity and prohibitin expression. p38-MAPK activation was essential for the protective effect of FL3 and FL37 on barrier permeability and mitochondrial-derived reactive oxygen species production during TNFα treatment. Mice administered FL3 during dextran sodium sulfate colitis exhibited increased colonic prohibitin expression and p38-MAPK activation, preserved barrier function, and less inflammation. CONCLUSIONS These results suggest that flavaglines exhibit therapeutic potential against colitis and preserve intestinal epithelial cell survival, mitochondrial function, and barrier integrity.
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23
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Sanghavi M, Vajir M, Kumar S, Tikoo K. NFAT inhibitor tributylhexadecylphosphoniumbromide, ameliorates high fructose induced insulin resistance and nephropathy. Chem Biol Interact 2015; 240:268-77. [PMID: 26358169 DOI: 10.1016/j.cbi.2015.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/24/2015] [Accepted: 09/01/2015] [Indexed: 11/17/2022]
Abstract
High fructose diet (HFrD)-induced insulin resistance (IR) has been reported to be associated with an increase in albuminuria, glomerular hypertrophy and inflammation in kidney. However, the molecular mechanisms associated with high fructose-induced IR and renal dysfunction are still unclear. In the present study, we have investigated the role of nuclear factor of activated T-cell (NFAT) and its inhibitor, Tributylhexadecylphosphoniumbromide (THPB) in high fructose-induced IR and renal injury. NFAT inhibition by THPB treatment significantly improved HFrD-induced insulin resistance. Treatment with THPB markedly reduced high fructose diet-induced protein expression of NFATc4, PTEN and also alleviated expression of inflammatory markers in kidneys of HFrD rats. Further, THPB treatment not only improved acute ANG II responses but also repressed the processes of renal fibrosis, ECM accumulation, foot process effacement and renal apoptosis in HFrD rats. Taken together, we for the first time provide evidence that HFrD -induced insulin resistance and renal injury is associated with dysregulated NFATc4/PTEN signalling and THPB prevents this dysregulation through inhibition of NFATc4. Thus, targeting NFATc4 can be a novel therapeutic approach for preventing HFrD induced- IR and renal injury.
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Affiliation(s)
- Maitri Sanghavi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, SAS Nagar, Mohali, Punjab 160062, India.
| | - Malek Vajir
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, SAS Nagar, Mohali, Punjab 160062, India.
| | - Sandeep Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, SAS Nagar, Mohali, Punjab 160062, India.
| | - Kulbhushan Tikoo
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, SAS Nagar, Mohali, Punjab 160062, India.
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24
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Tang T, Lu Q, Yang X, Liu X, Liao R, Zhang Y, Yang Z. Roles of the tacrolimus-dependent transcription factor IRF4 in acute rejection after liver transplantation. Int Immunopharmacol 2015; 28:257-63. [PMID: 26093273 DOI: 10.1016/j.intimp.2015.06.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 04/29/2015] [Accepted: 06/08/2015] [Indexed: 01/21/2023]
Abstract
Acute rejection is a serious and life-threatening complication of liver transplantation (LTx). Tacrolimus (TAC) is a potent immunosuppressant used in experimental and clinical transplantation. Interferon regulatory factor 4 (IRF4) plays key roles as a transcription factor in the immune response. This study explored the role of IRF4 in acute rejection after LTx using TAC treatment. Here, LTx was performed in DA (RT1(n)) and Lewis (LEW) (RT1(l)) rats. The recipients were immunosuppressed with TAC (1.5mg/kg/day subcutaneously) or saline. Liver grafts were harvested 1, 3, 5, 7, and 10 days after LTx for histology, immunohistochemistry, western blotting and real-time PCR. Splenic mononuclear cells were activated with different doses of TAC. The nuclear factor of activated T cells (NFAT) signal pathway and CD4+ T subset-related transcription factors were assessed. The results showed that TAC treatment prolonged the survival of liver allografts in recipients, significantly attenuated hepatic tissue injury and improved liver function. IRF4 expression in grafts was down-regulated after TAC treatment. TAC inhibited the expression of IRF4, NFAT, Foxp3 and RORγt in splenic mononuclear cells in vitro. In conclusions, our studies showed that TAC attenuated acute rejection responses after LTx. This attenuation might depend on the TAC-NFAT-IRF4 signal pathway, which is crucial for the function of T helper subsets (Treg and Th17 cells) in acute rejection after LTx. These findings contribute to our understanding of the immune pharmacological mechanism of TAC to prevent rejection in LTx rats.
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Affiliation(s)
- Tengqian Tang
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China
| | - Qian Lu
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China
| | - Xing Yang
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China; The Institute of Hepatobiliary Surgery, 324 Hospital of People's Liberation Army (PLA), China
| | - Xiangde Liu
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China
| | - Rui Liao
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China
| | - Yujun Zhang
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China
| | - Zhanyu Yang
- The Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, China.
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25
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Yang M, Lin HB, Gong S, Chen PY, Geng LL, Zeng YM, Li DY. Effect of Astragalus polysaccharides on expression of TNF-α, IL-1β and NFATc4 in a rat model of experimental colitis. Cytokine 2014; 70:81-6. [DOI: 10.1016/j.cyto.2014.07.250] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 07/20/2014] [Accepted: 07/24/2014] [Indexed: 02/07/2023]
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26
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Zhou Y, Wang Q, Weiss HL, Evers BM. Nuclear factor of activated T-cells 5 increases intestinal goblet cell differentiation through an mTOR/Notch signaling pathway. Mol Biol Cell 2014; 25:2882-90. [PMID: 25057011 PMCID: PMC4161521 DOI: 10.1091/mbc.e14-05-0998] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
This study demonstrates a role for nuclear factor of activated T-cell 5 (NFAT5) in the regulation of mTOR signaling in intestinal cells, which suggests that NFAT5 participates in the regulation of intestinal homeostasis via suppression of the mTORC1/Notch signaling pathway. The intestinal mucosa undergoes a continual process of proliferation, differentiation, and apoptosis that is regulated by multiple signaling pathways. Previously, we have shown that the nuclear factor of activated T-cells 5 (NFAT5) is involved in the regulation of intestinal enterocyte differentiation. Here we show that treatment with sodium chloride (NaCl), which activates NFAT5 signaling, increased mTORC1 repressor regulated in development and DNA damage response 1 (REDD1) protein expression and inhibited mTOR signaling; these alterations were attenuated by knockdown of NFAT5. Knockdown of NFAT5 activated mammalian target of rapamycin (mTOR) signaling and significantly inhibited REDD1 mRNA expression and protein expression. Consistently, overexpression of NFAT5 increased REDD1 expression. In addition, knockdown of REDD1 activated mTOR and Notch signaling, whereas treatment with mTOR inhibitor rapamycin repressed Notch signaling and increased the expression of the goblet cell differentiation marker mucin 2 (MUC2). Moreover, knockdown of NFAT5 activated Notch signaling and decreased MUC2 expression, while overexpression of NFAT5 inhibited Notch signaling and increased MUC2 expression. Our results demonstrate a role for NFAT5 in the regulation of mTOR signaling in intestinal cells. Importantly, these data suggest that NFAT5 participates in the regulation of intestinal homeostasis via the suppression of mTORC1/Notch signaling pathway.
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Affiliation(s)
- Yuning Zhou
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536
| | - Qingding Wang
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536 Department of Surgery, University of Kentucky, Lexington, KY 40536
| | - Heidi L Weiss
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536
| | - B Mark Evers
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536 Department of Surgery, University of Kentucky, Lexington, KY 40536
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27
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Cohen L, Sekler I, Hershfinkel M. The zinc sensing receptor, ZnR/GPR39, controls proliferation and differentiation of colonocytes and thereby tight junction formation in the colon. Cell Death Dis 2014; 5:e1307. [PMID: 24967969 PMCID: PMC4611734 DOI: 10.1038/cddis.2014.262] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/11/2014] [Accepted: 05/05/2014] [Indexed: 12/21/2022]
Abstract
The intestinal epithelium is a renewable tissue that requires precise balance between proliferation and differentiation, an essential process for the formation of a tightly sealed barrier. Zinc deficiency impairs the integrity of the intestinal epithelial barrier and is associated with ulcerative and diarrheal pathologies, but the mechanisms underlying the role of Zn2+ are not well understood. Here, we determined a role of the colonocytic Zn2+ sensing receptor, ZnR/GPR39, in mediating Zn2+-dependent signaling and regulating the proliferation and differentiation of colonocytes. Silencing of ZnR/GPR39 expression attenuated Zn2+-dependent activation of ERK1/2 and AKT as well as downstream activation of mTOR/p70S6K, pathways that are linked with proliferation. Consistently, ZnR/GPR39 silencing inhibited HT29 and Caco-2 colonocyte proliferation, while not inducing caspase-3 cleavage. Remarkably, in differentiating HT29 colonocytes, silencing of ZnR/GPR39 expression inhibited alkaline phosphatase activity, a marker of differentiation. Furthermore, Caco-2 colonocytes showed elevated expression of ZnR/GPR39 during differentiation, whereas silencing of ZnR/GPR39 decreased monolayer transepithelial electrical resistance, suggesting compromised barrier formation. Indeed, silencing of ZnR/GPR39 or chelation of Zn2+ by the cell impermeable chelator CaEDTA was followed by impaired expression of the junctional proteins, that is, occludin, zonula-1 (ZO-1) and E-cadherin. Importantly, colon tissues of GPR39 knockout mice also showed a decrease in expression levels of ZO-1 and occludin compared with wildtype mice. Altogether, our results indicate that ZnR/GPR39 has a dual role in promoting proliferation of colonocytes and in controlling their differentiation. The latter is followed by ZnR/GPR39-dependent expression of tight junctional proteins, thereby leading to formation of a sealed intestinal epithelial barrier. Thus, ZnR/GPR39 may be a therapeutic target for promoting epithelial function and tight junction barrier integrity during ulcerative colon diseases.
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Affiliation(s)
- L Cohen
- Department of Physiology and Cell Biology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - I Sekler
- Department of Physiology and Cell Biology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - M Hershfinkel
- Department of Physiology and Cell Biology, Faculty of Health Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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28
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Camp JG, Frank CL, Lickwar CR, Guturu H, Rube T, Wenger AM, Chen J, Bejerano G, Crawford GE, Rawls JF. Microbiota modulate transcription in the intestinal epithelium without remodeling the accessible chromatin landscape. Genome Res 2014; 24:1504-16. [PMID: 24963153 PMCID: PMC4158762 DOI: 10.1101/gr.165845.113] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Microbiota regulate intestinal physiology by modifying host gene expression along the length of the intestine, but the underlying regulatory mechanisms remain unresolved. Transcriptional specificity occurs through interactions between transcription factors (TFs) and cis-regulatory regions (CRRs) characterized by nucleosome-depleted accessible chromatin. We profiled transcriptome and accessible chromatin landscapes in intestinal epithelial cells (IECs) from mice reared in the presence or absence of microbiota. We show that regional differences in gene transcription along the intestinal tract were accompanied by major alterations in chromatin accessibility. Surprisingly, we discovered that microbiota modify host gene transcription in IECs without significantly impacting the accessible chromatin landscape. Instead, microbiota regulation of host gene transcription might be achieved by differential expression of specific TFs and enrichment of their binding sites in nucleosome-depleted CRRs near target genes. Our results suggest that the chromatin landscape in IECs is preprogrammed by the host in a region-specific manner to permit responses to microbiota through binding of open CRRs by specific TFs.
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Affiliation(s)
- J Gray Camp
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; Department of Developmental Biology, Stanford University, Stanford, California 94305, USA; Computer Science Department, Stanford University, Stanford, California 94305, USA
| | - Christopher L Frank
- Institute for Genome Sciences and Policy, Duke University, Durham, North Carolina 27708, USA; Department of Molecular Genetics and Microbiology, Duke University, Durham, North Carolina 27710, USA
| | - Colin R Lickwar
- Department of Molecular Genetics and Microbiology, Duke University, Durham, North Carolina 27710, USA
| | - Harendra Guturu
- Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA
| | - Tomas Rube
- Physics Department, Stanford University, Stanford, California 94305, USA
| | - Aaron M Wenger
- Computer Science Department, Stanford University, Stanford, California 94305, USA
| | - Jenny Chen
- Biomedical Informatics Program, Stanford University, Stanford, California 94305, USA
| | - Gill Bejerano
- Department of Developmental Biology, Stanford University, Stanford, California 94305, USA; Computer Science Department, Stanford University, Stanford, California 94305, USA
| | - Gregory E Crawford
- Institute for Genome Sciences and Policy, Duke University, Durham, North Carolina 27708, USA; Department of Pediatrics, Division of Medical Genetics, Duke University, Durham, North Carolina 27708, USA
| | - John F Rawls
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; Institute for Genome Sciences and Policy, Duke University, Durham, North Carolina 27708, USA; Department of Molecular Genetics and Microbiology, Duke University, Durham, North Carolina 27710, USA;
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29
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Pan MG, Xiong Y, Chen F. NFAT gene family in inflammation and cancer. Curr Mol Med 2013; 13:543-54. [PMID: 22950383 DOI: 10.2174/1566524011313040007] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 08/04/2012] [Accepted: 08/10/2012] [Indexed: 01/28/2023]
Abstract
Calcineurin-NFAT signaling is critical for numerous aspects of vertebrate function during and after embryonic development. Initially discovered in T cells, the NFAT gene family, consisting of five members, regulates immune system, inflammatory response, angiogenesis, cardiac valve formation, myocardial development, axonal guidance, skeletal muscle development, bone homeostasis, development and metastasis of cancer, and many other biological processes. In this review we will focus on the NFAT literature relevant to the two closely related pathological systems: inflammation and cancer.
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Affiliation(s)
- M-G Pan
- Division of Oncology and Hematology, Kaiser Permanente Medical Center, Santa Clara, CA 95051, USA.
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30
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Zhou Y, Wang Q, Guo Z, Weiss HL, Evers BM. Nuclear factor of activated T-cell c3 inhibition of mammalian target of rapamycin signaling through induction of regulated in development and DNA damage response 1 in human intestinal cells. Mol Biol Cell 2012; 23:2963-72. [PMID: 22696685 PMCID: PMC3408422 DOI: 10.1091/mbc.e12-01-0037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Our results demonstrate that nuclear factor of activated T-cell 3 (NFATc3) contributes to the regulation of the mammalian target of rapamycin (mTOR) repressor regulated in development and DNA damage response 1 (REDD1) and mTOR downstream-targeted c-Myc expression. Furthermore, our study demonstrates a novel role for the NFATc3/REDD1/tuberous sclerosis complex 2 axis in the regulation of goblet cell differentiation. The nuclear factor of activated T-cell (NFAT) proteins are a family of transcription factors (NFATc1–c4) involved in the regulation of cell differentiation. We identified REDD1, a negative regulator of mammalian target of rapamycin (mTOR) through the tuberous sclerosis complex (TSC1/2 complex), as a new molecular target of NFATc3. We show that treatment with a combination of phorbol 12-myristate 13-acetate (PMA) plus ionophore A23187 (Io), which induces NFAT activation, increased REDD1 mRNA and protein expression and inhibited mTOR signaling; pretreatment with the calcineurin inhibitor cyclosporin A (CsA), an antagonist of NFAT signaling, decreased REDD1 induction and mTOR inhibition. Knockdown of NFATc3, not NFATc1, NFATc2, or NFATc4, attenuated PMA/Io-induced REDD1 expression. Treatment with PMA/Io increased REDD1 promoter activity and increased NFATc3 binding to the REDD1 promoter. Overexpression of NFATc3 increased REDD1 mRNA and protein expression and increased PMA/Io-mediated REDD1 promoter activity. Treatment with PMA/Io increased expression of the goblet cell differentiation marker MUC2; these changes were attenuated by pretreatment with CsA or knockdown of REDD1 or NFATc3. Overexpression of NFATc3 increased, while knockdown of TSC2 decreased, MUC2 expression. We provide evidence showing NFATc3 inhibits mTOR via induction of REDD1. Our results suggest a role for the NFATc3/REDD1/TSC2 axis in the regulation of intestinal cell differentiation.
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Affiliation(s)
- Yuning Zhou
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536-0293, USA
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31
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Sobinoff AP, Mahony M, Nixon B, Roman SD, McLaughlin EA. Understanding the Villain: DMBA-Induced Preantral Ovotoxicity Involves Selective Follicular Destruction and Primordial Follicle Activation through PI3K/Akt and mTOR Signaling. Toxicol Sci 2011; 123:563-75. [DOI: 10.1093/toxsci/kfr195] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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