1
|
Shen X, Li M, Li Y, Jiang Y, Niu K, Zhang S, Lu X, Zhang R, Zhao Z, Zhou L, Guo Z, Wang S, Wei C, Chang L, Hou Y, Wu Y. Bazi Bushen ameliorates age-related energy metabolism dysregulation by targeting the IL-17/TNF inflammatory pathway associated with SASP. Chin Med 2024; 19:61. [PMID: 38594761 PMCID: PMC11005220 DOI: 10.1186/s13020-024-00927-9] [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: 01/22/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Chronic inflammation and metabolic dysfunction are key features of systemic aging, closely associated with the development and progression of age-related metabolic diseases. Bazi Bushen (BZBS), a traditional Chinese medicine used to alleviate frailty, delays biological aging by modulating DNA methylation levels. However, the precise mechanism of its anti-aging effect remains unclear. In this study, we developed the Energy Expenditure Aging Index (EEAI) to estimate biological age. By integrating the EEAI with transcriptome analysis, we aimed to explore the impact of BZBS on age-related metabolic dysregulation and inflammation in naturally aging mice. METHODS We conducted indirect calorimetry analysis on five groups of mice with different ages and utilized the data to construct EEAI. 12 -month-old C57BL/6 J mice were treated with BZBS or β-Nicotinamide Mononucleotide (NMN) for 8 months. Micro-CT, Oil Red O staining, indirect calorimetry, RNA sequencing, bioinformatics analysis, and qRT-PCR were performed to investigate the regulatory effects of BZBS on energy metabolism, glycolipid metabolism, and inflammaging. RESULTS The results revealed that BZBS treatment effectively reversed the age-related decline in energy expenditure and enhanced overall metabolism, as indicated by the aging index of energy expenditure derived from energy metabolism parameters across various ages. Subsequent investigations showed that BZBS reduced age-induced visceral fat accumulation and hepatic lipid droplet aggregation. Transcriptomic analysis of perirenal fat and liver indicated that BZBS effectively enhanced lipid metabolism pathways, such as the PPAR signaling pathway, fatty acid oxidation, and cholesterol metabolism, and improved glycolysis and mitochondrial respiration. Additionally, there was a significant improvement in inhibiting the inflammation-related arachidonic acid-linoleic acid metabolism pathway and restraining the IL-17 and TNF inflammatory pathways activated via senescence associated secretory phenotype (SASP). CONCLUSIONS BZBS has the potential to alleviate inflammation in metabolic organs of naturally aged mice and maintain metabolic homeostasis. This study presents novel clinical therapeutic approaches for the prevention and treatment of age-related metabolic diseases.
Collapse
Affiliation(s)
- Xiaogang Shen
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
| | - Mengnan Li
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, People's Republic of China
| | - Yawen Li
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
| | - Yuning Jiang
- Nanjing University of Chinese Medicine, Nanjing, 210023, People's Republic of China
| | - Kunxu Niu
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
| | - Shixiong Zhang
- Nanjing University of Chinese Medicine, Nanjing, 210023, People's Republic of China
| | - Xuan Lu
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
| | - Runtao Zhang
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
| | - Zhiqin Zhao
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China
| | - Liangxing Zhou
- Nanjing University of Chinese Medicine, Nanjing, 210023, People's Republic of China
| | - Zhifang Guo
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, People's Republic of China
| | - Siwei Wang
- Hebei University of Chinese Medicine, Shijiazhuang, 050091, People's Republic of China
| | - Cong Wei
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, People's Republic of China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine-Luobing Theory, Hebei Yiling Hospital, Shijiazhuang, 050091, Hebei Province, People's Republic of China
- Shijiazhuang New Drug Technology Innovation Center of Compound Traditional Chinese Medicine, Shijiazhuang, 050035, People's Republic of China
| | - Liping Chang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, People's Republic of China
- Shijiazhuang New Drug Technology Innovation Center of Compound Traditional Chinese Medicine, Shijiazhuang, 050035, People's Republic of China
| | - Yunlong Hou
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China.
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, People's Republic of China.
| | - Yiling Wu
- Hebei Medical University, Hebei Province, 361 East Zhongshan Road, Shijiazhuang, 050017, People's Republic of China.
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, People's Republic of China.
| |
Collapse
|
2
|
Dalhäusser AK, Rössler OG, Thiel G. Regulation of c-Fos gene transcription by stimulus-responsive protein kinases. Gene 2022; 821:146284. [PMID: 35143939 DOI: 10.1016/j.gene.2022.146284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 01/20/2022] [Accepted: 02/03/2022] [Indexed: 12/12/2022]
Abstract
The basic region leucin zipper (bZIP) protein c-Fos constitutes together with other bZIP proteins the AP-1 transcription factor complex. Expression of the c-Fos gene is regulated by numerous extracellular signaling molecules including mitogens, metabolites, and ligands for receptor tyrosine kinases, G protein-coupled receptors, and cytokine receptors. Here, we analyzed the effects of the stimulus-responsive MAP kinases ERK1/2 (extracellular signal-regulated protein kinase), JNK (c-Jun N-terminal protein kinase) and p38 protein kinase on transcription of the c-Fos gene. We used chromatin-integrated c-Fos promoter-luciferase reporter genes containing inactivating point mutations of DNA binding sites for distinct transcription factors. ERK1/2, JNK, and p38 protein kinases were specifically activated following expression of either a mutant of B-Raf, a truncated version of mitogen-activated/extracellular signal responsive kinase kinase kinase-1 (MEKK1), or a mutant of MAP kinase kinase-6 (MKK6), respectively. The results show that the DNA binding sites for serum response factor (SRF) and for the ternary complex factor (TCF) are of major importance for stimulating c-Fos promoter activity by MAP kinases. ERK1/2 and p38-induced stimulation of the c-Fos promoter additionally required the DNA binding site for the transcription factor AP-1. Mutation of the DNA binding site for STAT had no or only a small effect on c-Fos promoter activity. We conclude that MAP kinases do not activate distinct transcription factors involving distinct genetic elements. Rather, these kinases mainly target SRF and TCF proteins, leading to an activation of transcription of the c-Fos gene via the serum response element.
Collapse
Affiliation(s)
- Alisia K Dalhäusser
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
| |
Collapse
|
3
|
Insulin-Responsive Transcription Factors. Biomolecules 2021; 11:biom11121886. [PMID: 34944530 PMCID: PMC8699568 DOI: 10.3390/biom11121886] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/04/2021] [Accepted: 12/09/2021] [Indexed: 12/12/2022] Open
Abstract
The hormone insulin executes its function via binding and activating of the insulin receptor, a receptor tyrosine kinase that is mainly expressed in skeletal muscle, adipocytes, liver, pancreatic β-cells, and in some areas of the central nervous system. Stimulation of the insulin receptor activates intracellular signaling cascades involving the enzymes extracellular signal-regulated protein kinase-1/2 (ERK1/2), phosphatidylinositol 3-kinase, protein kinase B/Akt, and phospholipase Cγ as signal transducers. Insulin receptor stimulation is correlated with multiple physiological and biochemical functions, including glucose transport, glucose homeostasis, food intake, proliferation, glycolysis, and lipogenesis. This review article focuses on the activation of gene transcription as a result of insulin receptor stimulation. Signal transducers such as protein kinases or the GLUT4-induced influx of glucose connect insulin receptor stimulation with transcription. We discuss insulin-responsive transcription factors that respond to insulin receptor activation and generate a transcriptional network executing the metabolic functions of insulin. Importantly, insulin receptor stimulation induces transcription of genes encoding essential enzymes of glycolysis and lipogenesis and inhibits genes encoding essential enzymes of gluconeogenesis. Overall, the activation or inhibition of insulin-responsive transcription factors is an essential aspect of orchestrating a wide range of insulin-induced changes in the biochemistry and physiology of insulin-responsive tissues.
Collapse
|
4
|
Tamminen T, Koskela A, Toropainen E, Gurubaran IS, Winiarczyk M, Liukkonen M, Paterno JJ, Lackman P, Sadeghi A, Viiri J, Hyttinen JMT, Koskelainen A, Kaarniranta K. Pinosylvin Extract Retinari™ Sustains Electrophysiological Function, Prevents Thinning of Retina, and Enhances Cellular Response to Oxidative Stress in NFE2L2 Knockout Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8028427. [PMID: 34917233 PMCID: PMC8670936 DOI: 10.1155/2021/8028427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/02/2021] [Accepted: 11/16/2021] [Indexed: 12/18/2022]
Abstract
Chronic oxidative stress eventually leads to protein aggregation in combination with impaired autophagy, which has been observed in age-related macular degeneration. We have previously shown an effective age-related macular degeneration disease model in mice with nuclear factor-erythroid 2-related factor-2 (NFE2L2) knockout. We have also shown pinosylvin, a polyphenol abundant in bark waste, to increase human retinal pigment epithelium cell viability in vitro. In this work, the effects of commercial natural pinosylvin extract, Retinari™, were studied on the electroretinogram, optical coherence tomogram, autophagic activity, antioxidant capacity, and inflammation markers. Wild-type and NFE2L2 knockout mice were raised until the age of 14.8 ± 3.8 months. They were fed with either regular or Retinari™ chow (141 ± 17.0 mg/kg/day of pinosylvin) for 10 weeks before the assays. Retinari™ treatment preserved significant retinal function with significantly preserved a- and b-wave amplitudes in the electroretinogram responses. Additionally, the treatment prevented thinning of the retina in the NFE2L2 knockout mice. The NFE2L2 knockout mice showed reduced ubiquitin-tagged protein accumulation in addition to local upregulation of complement factor H and antioxidant enzymes superoxide dismutase 1 and catalase. Therefore, the treatment in the NFE2L2 KO disease model led to reduced chronic oxidative stress and sustained retinal function and morphology. Our results demonstrate that pinosylvin supplementation could potentially lower the risk of age-related macular degeneration onset and slow down its progression.
Collapse
Affiliation(s)
- Toni Tamminen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Ali Koskela
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Elisa Toropainen
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Iswariyaraja Sridevi Gurubaran
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Mateusz Winiarczyk
- Department of Vitreoretinal Surgery, Medical University of Lublin, Poland
| | - Mikko Liukkonen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Jussi J. Paterno
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
- Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, FI-70029 KYS Kuopio, Finland
| | | | - Amir Sadeghi
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Johanna Viiri
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Juha M. T. Hyttinen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Ari Koskelainen
- Department of Neuroscience and Biomedical Engineering, Aalto University, FI-00067 Aalto, Finland
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
- Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, FI-70029 KYS Kuopio, Finland
| |
Collapse
|
5
|
Backes TM, Langfermann DS, Lesch A, Rössler OG, Laschke MW, Vinson C, Thiel G. Regulation and function of AP-1 in insulinoma cells and pancreatic β-cells. Biochem Pharmacol 2021; 193:114748. [PMID: 34461116 DOI: 10.1016/j.bcp.2021.114748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/16/2022]
Abstract
Cav1.2 L-type voltage-gated Ca2+ channels play a central role in pancreatic β-cells by integrating extracellular signals with intracellular signaling events leading to insulin secretion and altered gene transcription. Here, we investigated the intracellular signaling pathway following stimulation of Cav1.2 Ca2+ channels and addressed the function of the transcription factor activator protein-1 (AP-1) in pancreatic β-cells of transgenic mice. Stimulation of Cav1.2 Ca2+ channels activates AP-1 in insulinoma cells. Pharmacological and genetic experiments identified c-Jun N-terminal protein kinase as a signal transducer connecting Cav1.2 Ca2+ channel activation with gene transcription. Moreover, the basic region-leucine zipper proteins ATF2 and c-Jun or c-Jun-related proteins were involved in stimulus-transcription coupling. We addressed the functions of AP-1 in pancreatic β-cells analyzing a newly generated transgenic mouse model. These transgenic mice expressed A-Fos, a mutant of c-Fos that attenuates DNA binding of c-Fos dimerization partners. In insulinoma cells, A-Fos completely blocked AP-1 activation following stimulation of Cav1.2 Ca2+ channels. The analysis of transgenic A-Fos-expressing mice revealed that the animals displayed impaired glucose tolerance. Thus, we show here for the first time that AP-1 controls an important function of pancreatic β-cells in vivo, the regulation of glucose homeostasis.
Collapse
Affiliation(s)
- Tobias M Backes
- Saarland University Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Daniel S Langfermann
- Saarland University Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Andrea Lesch
- Saarland University Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Saarland University Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Matthias W Laschke
- Saarland University Medical Faculty, Institute for Clinical and Experimental Surgery, D-66421 Homburg, Germany
| | | | - Gerald Thiel
- Saarland University Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany.
| |
Collapse
|
6
|
Thiel G, Wagner L, Ulrich M, Rössler OG. Immediate-early transcriptional response to insulin receptor stimulation. Biochem Pharmacol 2021; 192:114696. [PMID: 34302794 DOI: 10.1016/j.bcp.2021.114696] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/15/2021] [Accepted: 07/19/2021] [Indexed: 01/06/2023]
Abstract
Insulin binding to the insulin receptor triggers intracellular signaling cascades involving the activation of protein and lipid kinases. As a result, multiple biological functions of the cells are changed. Here, we analyzed the regulation and signaling cascades leading to insulin-induced activation of the stimulus-responsive transcription factors. For the analyses, we used chromatin-embedded reporter genes having a cellular nucleosomal organisation, and fibroblasts expressing human insulin receptors (HIRcB cells). The results show that stimulation of the insulin receptor induced the expression of the transcription factor Egr-1. Attenuation of Egr-1 promoter activation was observed following expression of a dominant-negative mutant of the ternary complex factor Elk-1. These data were corroborated by experiments showing that insulin receptor stimulation increased the transcriptional activation potential of Elk-1. In addition, the transcriptional activity of AP-1 was significantly elevated in insulin-stimulated HIRcB cells. Expression of the dominant-negative mutant of Elk-1 reduced insulin-induced activation of AP-1, indicating that Elk-1 controls both serum response element and AP-1-regulated transcription. Moreover, we show that stimulation of the insulin receptor activates cyclic AMP response element (CRE)-controlled transcription, involving the transcription factor CREB. Insulin-induced transcription of Elk-1 and CREB-controlled reporter genes was attenuated by overexpression of MAP kinase phosphatase-1 or a constitutively active mutant of calcineurin A, indicating that both phosphatases are part of a negative feedback loop for reducing insulin-mediated gene transcription. Finally, we show that expression of the adenoviral protein E1A selectively reduced CRE-mediated transcription following stimulation of the insulin receptor. These data indicate that insulin-regulated transcription of CRE-containing genes is under epigenetic control.
Collapse
Affiliation(s)
- Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
| | - Lara Wagner
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Myriam Ulrich
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| |
Collapse
|
7
|
Thiel G, Backes TM, Guethlein LA, Rössler OG. Chromatin-embedded reporter genes: Quantification of stimulus-induced gene transcription. Gene 2021; 787:145645. [PMID: 33848575 DOI: 10.1016/j.gene.2021.145645] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/07/2021] [Indexed: 02/07/2023]
Abstract
Receptors and ion channels expressed on the cell surface ensure proper communication between the cells and the environment. In multicellular organism, stimulus-regulated gene transcription is the basis for communication with the environment allowing individual cells to respond to stimuli such as nutrients, chemical stressors and signaling molecules released by other cells of the organism. Hormones, cytokines, and mitogens bind to receptors and ion channels and induce intracellular signaling cascades involving second messengers, kinases, phosphatases, and changes in the concentration of particular ions. Ultimately, the signaling cascades reach the nucleus. Transcription factors are activated that respond to cellular stimulation and induce changes in gene transcription. Investigating stimulus-transcription coupling combines cell biology with genetics. In this review, we discuss the molecular biology of stimulus-induced transcriptional activators and their responsiveness to extracellular and intracellular signaling molecules and to epigenetic regulators. Stimulus-induced gene expression is measured by several methods, including detection of nuclear translocation of transcription factors, phosphorylation or DNA binding. In this article, we emphasize that the most reliable method to directly measure transcriptional activation involves the use of chromatin-embedded reporter genes.
Collapse
Affiliation(s)
- Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
| | - Tobias M Backes
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Lisbeth A Guethlein
- Department of Structural Biology and Department of Microbiology & Immunology, School of Medicine, Stanford University, Stanford, CA 94305, USA
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| |
Collapse
|
8
|
Chang Y, He J, Ma B, Ishfaq M, Wang J, Zhang R, Yuan L, Liu J, Li C, Liu F. Prevention of acetaminophen-induced hepatocyte injury: JNK inhibition and GSTA1 involvement. Mol Cell Toxicol 2021. [DOI: 10.1007/s13273-021-00119-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
9
|
Zhang T, Pan L, Cao Y, Liu N, Wei W, Li H. Identifying the Mechanisms and Molecular Targets of Yizhiqingxin Formula on Alzheimer's Disease: Coupling Network Pharmacology with GEO Database. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2020; 13:487-502. [PMID: 33116763 PMCID: PMC7571582 DOI: 10.2147/pgpm.s269726] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 09/09/2020] [Indexed: 12/16/2022]
Abstract
Background Yizhiqingxin formula (YZQX) is a promising formula for the treatment of Alzheimer’s disease (AD) with significant clinical effects. Here, we coupled a network pharmacology approach with the Gene Expression Omnibus (GEO) database to illustrate comprehensive mechanisms and screen for molecular targets of YZQX for AD treatment. Methods First, active ingredients of YZQX were screened for the Traditional Chinese Medicine Systems Pharmacology (TCMSP) database with the absorption, distribution, metabolism, and excretion (ADME) parameters. Subsequently, putative targets of active ingredients were predicted using the DrugBank database. AD-related targets were retrieved by analyzing published microarray data (accession number GSE5281). Protein–protein interaction (PPI) networks of YZQX putative targets and AD-related targets were constructed visually and merged to identify candidate targets for YZQX against AD using Cytoscape 3.7.2 software. We performed gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis to further clarify the biological functions of the candidate targets. The gene-pathway network was established to filter for key target genes. Results Forty-three active ingredients were identified, and 193 putative target genes were predicted. Seven hundred and ten targets related to AD were screened with |log2 FC| > 1 and P < 0.05. Based on the PPI network, 110 target genes of YZQX against AD were identified. Moreover, 32 related pathways including the PI3K-Akt signaling pathway, MAPK signaling pathway, ubiquitin-mediated proteolysis, apoptosis and the NF-kappa B signaling pathway were significantly enriched. In the gene-pathway network, MAPK1, AKT1, TP53, MDM2, EGFR, RELA, SRC, GRB2, CUL1, and MYC targets are putative core genes for YZQX in AD treatment. Conclusion YZQX against AD may exert its neuroprotective effect via the PI3K-Akt signaling pathway, MAPK signaling pathway, and ubiquitin-mediated proteolysis. YZQX may be a promising drug that can be used in the treatment of AD.
Collapse
Affiliation(s)
- Tingting Zhang
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, ShanDong Province, People's Republic of China.,Department of Geratology, Xiyuan Hospital, China Academy of Chinese Medical Science, Beijing, People's Republic of China
| | - Linlin Pan
- Department of Chinese Medicine Literature and Culture, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, People's Republic of China
| | - Yu Cao
- Geriatric Laboratory, Xiyuan Hospital, China Academy of Chinese Medical Science, Beijing, People's Republic of China
| | - Nanyang Liu
- Department of Geratology, Xiyuan Hospital, China Academy of Chinese Medical Science, Beijing, People's Republic of China
| | - Wei Wei
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, ShanDong Province, People's Republic of China.,Department of Geratology, Xiyuan Hospital, China Academy of Chinese Medical Science, Beijing, People's Republic of China
| | - Hao Li
- Department of Geratology, Xiyuan Hospital, China Academy of Chinese Medical Science, Beijing, People's Republic of China
| |
Collapse
|
10
|
Qin T, Cheng L, Xiao Y, Qian W, Li J, Wu Z, Wang Z, Xu Q, Duan W, Wong L, Wu E, Ma Q, Ma J. NAF-1 Inhibition by Resveratrol Suppresses Cancer Stem Cell-Like Properties and the Invasion of Pancreatic Cancer. Front Oncol 2020; 10:1038. [PMID: 32766132 PMCID: PMC7378530 DOI: 10.3389/fonc.2020.01038] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 05/26/2020] [Indexed: 12/14/2022] Open
Abstract
Resveratrol is a natural polyphenolic compound with multiple biological effects, e.g., proliferation inhibition, anti-oxidation, and neuroprotection. Besides that, studies have shown that resveratrol inhibits tumor growth and migration, as well as epithelial–mesenchymal transition (EMT). However, its molecular mechanisms in tumor progression are not fully understood. Nutrient-deprivation autophagy factor-1 (NAF-1) is mainly found in the endoplasmic reticulum and mitochondrial outer membrane. It is an important genetic locus for regulating oxidative stress and autophagy. The molecular mechanism of NAF-1 in pancreatic cancer is currently unclear. The current study found that NAF-1 is expressed in pancreatic cancer tissue and correlated with the progression of pancreatic cancer. Furthermore, we found that NAF-1 inhibition significantly inhibits the stem cell characteristics and the invasion and migration abilities of pancreatic cancer cells. In a subcutaneous xenograft model of pancreatic cancer in nude mice, resveratrol inhibited the expression of NAF-1, thereby inhibiting tumor growth. Taken together, resveratrol could be an effective anti-tumor drug, and NAF-1 may be a rational therapeutic target.
Collapse
Affiliation(s)
- Tao Qin
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Liang Cheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ying Xiao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Weikun Qian
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jie Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zheng Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zheng Wang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qinhong Xu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wanxing Duan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lucas Wong
- Department of Oncology, Baylor Scott & White Health, Temple, TX, United States.,Department of Surgery, Texas A&M University College of Medicine, Temple, TX, United States
| | - Erxi Wu
- Department of Surgery, Texas A&M University College of Medicine, Temple, TX, United States.,Department of Neurosurgery, Baylor Scott & White Health, Temple, TX, United States.,Neuroscience Institute, Baylor Scott & White Health, Temple, TX, United States.,Department of Pharmaceutical Sciences, Texas A&M University College of Pharmacy, College Station, TX, United States.,LIVESTRONG Cancer Institutes, Dell Medical School, The University of Texas at Austin, Austin, TX, United States.,Department of Oncology, Dell Medical School, The University of Texas at Austin, Austin, TX, United States
| | - Qingyong Ma
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiguang Ma
- Department of Anesthesiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
11
|
Ulrich M, Wissenbach U, Thiel G. The super-cooling compound icilin stimulates c-Fos and Egr-1 expression and activity involving TRPM8 channel activation, Ca2+ ion influx and activation of the ternary complex factor Elk-1. Biochem Pharmacol 2020; 177:113936. [DOI: 10.1016/j.bcp.2020.113936] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/23/2020] [Indexed: 12/12/2022]
|
12
|
Lesch A, Backes TM, Langfermann DS, Rössler OG, Laschke MW, Thiel G. Ternary complex factor regulates pancreatic islet size and blood glucose homeostasis in transgenic mice. Pharmacol Res 2020; 159:104983. [PMID: 32504838 DOI: 10.1016/j.phrs.2020.104983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 05/05/2020] [Accepted: 05/29/2020] [Indexed: 12/13/2022]
Abstract
A hallmark of diabetes mellitus is the inability of pancreatic β-cells to secrete sufficient amounts of insulin for maintaining normoglycemia. The formation of smaller islets may underlie the development of a diabetic phenotype, as a decreased β-cell mass will produce an insufficient amount of insulin. For a pharmacological intervention it is crucial to identify the proteins determining β-cell mass. Here, we identified the ternary complex factor (TCF) Elk-1 as a regulator of the size of pancreatic islets. Elk-1 mediates, together with a dimer of the serum-response factor (SRF), serum response element-regulated gene transcription. Elk-1 is activated in glucose-treated pancreatic β-cells but the biological functions of this protein in β-cells are so far unknown. Elk-1 and homologous TCF proteins are expressed in islets and insulinoma cells. Gene targeting experiments revealed that the TCF proteins show redundant activities. To solve the problem of functional redundancy of these homologous proteins, we generated conditional transgenic mice expressing a dominant-negative mutant of Elk-1 in pancreatic β-cells. The mutant competes with the wild-type TCFs for DNA and SRF-binding. Expression of the Elk-1 mutant in pancreatic β-cells resulted in the generation of significantly smaller islets and increased caspase-3 activity, indicating that apoptosis was responsible for the reduction of the pancreatic islet size. Glucose tolerance tests revealed that transgenic mice expressing the dominant-negative mutant of Elk-1 in pancreatic β-cells displayed impaired glucose tolerance. Thus, we show here for the first time that TCF controls important functions of pancreatic β-cells in vivo. Elk-1 may be considered as a new therapeutic target for the treatment of diabetes.
Collapse
Affiliation(s)
- Andrea Lesch
- Department of Medical Biochemistry and Molecular Biology, Saarland University, D-66421 Homburg, Germany
| | - Tobias M Backes
- Department of Medical Biochemistry and Molecular Biology, Saarland University, D-66421 Homburg, Germany
| | - Daniel S Langfermann
- Department of Medical Biochemistry and Molecular Biology, Saarland University, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University, D-66421 Homburg, Germany
| | - Matthias W Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, D-66421, Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University, D-66421 Homburg, Germany.
| |
Collapse
|
13
|
Thiel G, Ulrich M, Mukaida N, Rössler OG. Regulation of stimulus-induced interleukin-8 gene transcription in human adrenocortical carcinoma cells – Role of AP-1 and NF-κB. Cytokine 2020; 126:154862. [DOI: 10.1016/j.cyto.2019.154862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 08/27/2019] [Accepted: 09/20/2019] [Indexed: 12/11/2022]
|
14
|
Thiel G, Backes TM, Welck J, Steinhausen S, Fischer AL, Langfermann DS, Ulrich M, Wissenbach U, Rössler OG. Pharmacological inhibition of TRPM8-induced gene transcription. Biochem Pharmacol 2019; 170:113678. [PMID: 31654626 DOI: 10.1016/j.bcp.2019.113678] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/18/2019] [Indexed: 12/12/2022]
Abstract
Transient receptor potential melastatin-8 (TRPM8) channels are activated by cold temperature, menthol and icilin, leading to cold sensation. TRPM8 activation is connected with various diseases, indicating that a specific pharmacological antagonist, allowing nongenetic channel suppression, would be a valuable tool for therapy and basic research. Here, we assessed the biological activity and specificity of various TRPM8 inhibitors following stimulation of TRPM8 channels with either icilin or menthol. Recently, we showed that icilin strikingly upregulates the transcriptional activity of AP-1. By measuring AP-1 activity, we assessed which compound interrupted the TRPM8-induced intracellular signaling cascade from the plasma membrane to the nucleus. We tested the specificity of various TRPM8 inhibitors by analyzing AP-1 activation following stimulation of TRPM3 and TRPV1 channels, L-type voltage-gated Ca2+ channels, and Gαq-coupled receptors, either in the presence or absence of a particular TRPM8 inhibitor. The results show that the TRPM8 inhibitors BCTC, RQ-00203078, TC-1 2014, 2-APB, and clotrimazole blocked TRPM8-mediated activation of AP-1. However, only the compound RQ-00203078 showed TRPM8-specificity, while the other compounds function as broad-spectrum Ca2+ channel inhibitors. In addition, we show that progesterone interfered with TRPM8-induced activation of AP-1, as previously shown for TRPM3 and TRPC6 channels. TRPM8-induced transcriptional activation of AP-1 was additionally blocked by the compound PD98059, indicating that extracellular signal-regulated protein kinase-1/2 is essential to couple TRPM8 stimulation with transcriptional activation of AP-1. Moreover, an influx of Ca2+-ions is essential to induce the intracellular signaling cascade leading to the activation of AP-1.
Collapse
Key Words
- 2-APB, PubChem CID: 1598
- BCTC, PubChem CID: 9929425
- Capsaicin, PubChem CID: 1548943
- Clotrimazole, PubChem CID: 2812
- Clozapine N-oxide, PubChem CID: 135445691
- Designer receptor
- ERK1/2
- FPL 64176, PubChem CID: 3423
- Icilin, PubChem CID: 161930
- KCl, PubChem CID: 4873
- Menthol, PubChem CID: 1254
- PD98059, PubChem CID: 4713
- Pregnenolone sulfate, PubChem CID: 105074
- Progesterone, PubChem CID: 5994
- RQ-00203078, PubChem CID: 49783953
- TC-1 2014, PubChem CID: 10040286
- TRPM3
- TRPM8
- TRPV1
- Voltage-gated calcium channel
Collapse
Affiliation(s)
- Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany.
| | - Tobias M Backes
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Jennifer Welck
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | | | - Anna-Lena Fischer
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Daniel S Langfermann
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Myriam Ulrich
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Ulrich Wissenbach
- Experimental and Clinical Pharmacology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| |
Collapse
|
15
|
Wu B, Huang XY, Li L, Fan XH, Li PC, Huang CQ, Xiao J, Gui R, Wang S. Attenuation of diabetic cardiomyopathy by relying on kirenol to suppress inflammation in a diabetic rat model. J Cell Mol Med 2019; 23:7651-7663. [PMID: 31565849 PMCID: PMC6815847 DOI: 10.1111/jcmm.14638] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 06/23/2019] [Accepted: 07/23/2019] [Indexed: 12/15/2022] Open
Abstract
Diabetic cardiomyopathy is characterized by diabetes‐induced myocardial abnormalities, accompanied by inflammatory response and alterations in inflammation‐related signalling pathways. Kirenol, isolated from Herba Siegesbeckiae, has potent anti‐inflammatory properties. In this study, we aimed to investigate the cardioprotective effect of kirenol against DCM and underlying the potential mechanisms in a type 2 diabetes mellitus model. Kirenol treatment significantly decreased high glucose‐induced cardiofibroblasts proliferation and increased the cardiomyocytes viability, prevented the loss of mitochondrial membrane potential and further attenuated cardiomyocytes apoptosis, accompanied by a reduction in apoptosis‐related protein expression. Kirenol gavage could affect the expression of pro‐inflammatory cytokines in a dose‐dependent manner but not lower lipid profiles, and only decrease fasting plasma glucose, fasting plasma insulin and mean HbA1c levels in high‐dose kirenol‐treated group at some time‐points. Left ventricular dysfunction, hypertrophy, fibrosis and cell apoptosis, as structural and functional abnormalities, were ameliorated by kirenol administration. Moreover, in diabetic hearts, oral kirenol significantly attenuated activation of mitogen‐activated protein kinase subfamily and nuclear translocation of NF‐κB and Smad2/3 and decreased phosphorylation of IκBα and both fibrosis‐related and apoptosis‐related proteins. In an Electrophoretic mobility shift assay, the binding activities of NF‐κB, Smad3/4, SP1 and AP‐1 in the nucleus of diabetic myocardium were significantly down‐regulated by kirenol treatment. Additionally, high dose significantly enhanced myocardial Akt phosphorylation without intraperitoneal injection of insulin. Kirenol may have potent cardioprotective effects on treating for the established diabetic cardiomyopathy, which involves the inhibition of inflammation and fibrosis‐related signalling pathways and is independent of lowering hyperglycaemia, hyperinsulinemia and lipid profiles.
Collapse
Affiliation(s)
- Bin Wu
- Laboratory of Platelet and Endothelium Biology, Department of Transfusion Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Transfusion Medicine, the Third Xiangya Hospital, Central South University, Changsha, China.,Department of Physiology and Pharmacology, Medical College, Hubei University of Arts and Science, Xiangyang, China
| | - Xue-Yuan Huang
- Department of Transfusion Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Le Li
- Department of Cardiology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiao-Hang Fan
- Department of Pathophysiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peng-Cheng Li
- Laboratory of Platelet and Endothelium Biology, Department of Transfusion Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chuan-Qi Huang
- Department of Pharmacy, Wuhan Hospital of Traditional Chinese and Western Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Juan Xiao
- Department of Immunology, Medical College, Hubei University of Arts and Science, Xiangyang, China
| | - Rong Gui
- Department of Transfusion Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Shun Wang
- Laboratory of Platelet and Endothelium Biology, Department of Transfusion Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
16
|
Dihydrotestosterone activates AP-1 in LNCaP prostate cancer cells. Int J Biochem Cell Biol 2019; 110:9-20. [DOI: 10.1016/j.biocel.2019.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 02/15/2019] [Accepted: 02/19/2019] [Indexed: 02/06/2023]
|
17
|
Rubil S, Thiel G. Stimulation of TRPM3 channels increases the transcriptional activation potential of Elk-1 involving cytosolic Ca 2+, extracellular signal-regulated protein kinase, and calcineurin. Eur J Pharmacol 2018; 844:225-230. [PMID: 30552902 DOI: 10.1016/j.ejphar.2018.12.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 12/11/2022]
Abstract
Stimulation of transient receptor potential M3 (TRPM3) channels with the steroid pregnenolone sulfate increases the transcriptional activation potential of Elk-1, a transcription factor that regulates serum response element-mediated transcription. Here, we show that an influx of Ca2+ ions into the cells is essential for the activation of Elk-1 following stimulation of TRPM3. Using genetically encoded Ca2+ buffers, we show that a rise in cytoplasmic Ca2+ is required for the upregulation of the transcriptional activation potential of Elk-1, while buffering of Ca2+ in the nucleus had no inhibitory effect on the transcriptional activity of Elk-1. Pharmacological and genetic experiments showed that extracellular signal-regulated protein kinase (ERK1/2) functions as signal transducer connecting TRPM3 channels with the Elk-1 transcription factor. Accordingly, dephosphorylation of ERK1/2 in the nucleus by MAP kinase phosphatase attenuated TRPM3-mediated Elk-1 activation. Moreover, we show that the Ca2+/calmodulin-dependent protein phosphatase calcineurin is part of a shut-off-device for the signaling cascade connecting TRPM3 channels with the activation of Elk-1. The fact that TRPM3 channel stimulation activates Elk-1 connects TRPM3 with the biological functions of Elk-1, including the regulation of proliferation, differentiation, survival, transcription, and cell migration.
Collapse
Affiliation(s)
- Sandra Rubil
- Department of Medical Biochemistry and Molecular Biology Saarland University Medical Faculty, Building 44, D-66421 Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology Saarland University Medical Faculty, Building 44, D-66421 Homburg, Germany.
| |
Collapse
|
18
|
Langfermann DS, Rössler OG, Thiel G. Stimulation of B-Raf increases c-Jun and c-Fos expression and upregulates AP-1-regulated gene transcription in insulinoma cells. Mol Cell Endocrinol 2018; 472:126-139. [PMID: 29225069 DOI: 10.1016/j.mce.2017.12.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 12/05/2017] [Accepted: 12/07/2017] [Indexed: 01/15/2023]
Abstract
Stimulation of pancreatic β-cells with glucose activates the protein kinases B-Raf and extracellular signal-regulated protein kinase that participate in glucose sensing. Inhibition of both kinases results in impairment of glucose-regulated gene transcription. To analyze the signaling pathway controlled by B-Raf, we expressed a conditionally active form of B-Raf in INS-1 insulinoma cells. Here, we show that stimulation of B-Raf strongly activated the transcription factor AP-1 which is accompanied by increased c-Jun and c-Fos promoter activities, an upregulation of c-Jun and c-Fos biosynthesis, and elevated transcriptional activation potentials of c-Jun and c-Fos. Mutational analysis identified the AP-1 sites within the c-Jun promoter and the serum response element (SRE) within the c-Fos promoter as the essential genetic elements connecting B-Raf stimulation with AP-1 activation. In line with this, the transcriptional activation potential of the SRE-binding protein Elk-1 was increased following B-Raf activation. The signal pathway from B-Raf to AP-1 required the activation of c-Jun. We identified the cyclin D1 gene as a delayed response gene for AP-1 following stimulation of B-Raf in insulinoma cells. Moreover, MAP kinase phosphatase-1 and the Ca2+/calmodulin-dependent protein phosphatase calcineurin were identified to function as shut-off-devices for the signaling cascade connecting B-Raf stimulation with the activation of AP-1. The fact that stimulation with glucose, activation of L-type voltage-gated Ca2+ channels, and stimulation of B-Raf all trigger an activation of AP-1 indicates that AP-1 is a point of convergence of signaling pathways in β-cell.
Collapse
Affiliation(s)
- Daniel S Langfermann
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
| |
Collapse
|
19
|
Thiel G, Ulrich M, Mukaida N, Rössler OG. Resveratrol stimulation induces interleukin-8 gene transcription via NF-κB. Pharmacol Res 2018; 134:238-245. [DOI: 10.1016/j.phrs.2018.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 12/11/2022]
|
20
|
Thiel G, Rössler OG. Resveratrol stimulates c-Fos gene transcription via activation of ERK1/2 involving multiple genetic elements. Gene 2018. [PMID: 29514046 DOI: 10.1016/j.gene.2018.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The polyphenol resveratrol is found in many plant and fruits and is a constituent of our diet. Resveratrol has been proposed to have chemopreventive and anti-inflammatory activities. On the cellular level, resveratrol activates stimulus-regulated transcription factors. To identify resveratrol-responsive elements within a natural gene promoter, the molecular pathway leading to c-Fos gene expression by resveratrol was dissected. The c-Fos gene encodes a basic region leucine zipper transcription factor and is a prototype of an immediate-early gene that is regulated by a wide range of signaling molecules. We analyzed chromatin-integrated c-Fos promoter-luciferase reporter genes where transcription factor binding sites were destroyed by point mutations or deletion mutagenesis. The results show that mutation of the binding sites for serum response factor (SRF), activator protein-1 (AP-1) and cAMP response element binding protein (CREB) significantly reduced reporter gene transcription following stimulation of the cells with resveratrol. Inactivation of the binding sites for signal transducer and activator of transcription (STAT) or ternary complex factors did not influence resveratrol-regulated c-Fos promoter activity. Thus, the c-Fos promoter contains three resveratrol-responsive elements, the cAMP response element (CRE), and the binding sites for SRF and AP-1. Moreover, we show that the transcriptional activation potential of the c-Fos protein is increased in resveratrol-stimulated cells, indicating that the biological activity of c-Fos is elevated by resveratrol stimulation. Pharmacological and genetic experiments revealed that the protein kinase ERK1/2 is the signal transducer that connects resveratrol treatment with the c-Fos gene.
Collapse
Affiliation(s)
- Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| |
Collapse
|
21
|
Wu D, Li D, Liu Z, Liu X, Zhou S, Duan H. Role and underlying mechanism of SPATA12 in oxidative damage. Oncol Lett 2018; 15:3676-3684. [PMID: 29467887 PMCID: PMC5796374 DOI: 10.3892/ol.2018.7749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 11/02/2017] [Indexed: 12/19/2022] Open
Abstract
Spermatogenesis-associated gene 12 (SPATA12) functions as an inhibitor in spermatogenesis and tumorigenesis. Our previous study demonstrated that SPATA12 may be induced in tumor cells by ultraviolet (UV) C-mediated DNA damage, suggesting its importance in maintaining genomic integrity. In order to understand whether and how SPATA12 responds to oxidative damage, the present study established a cellular model of oxidative stress by detecting the effect of H2O2 on cell viability and intracellular superoxide dismutase activity, and the levels of glutathione and malondialdehyde (MDA). Quantitative polymerase chain reaction results demonstrated that H2O2 upregulated the expression of SPATA12, and a dual luciferase reporter gene assay indicated that transcription factor activator protein-1 (AP-1) was involved in the response of SPATA12 to oxidative stress. Through the exogenous expression of SPATA12, it was identified that SPATA12 decreased the level of reactive oxygen species and MDA, and also may reduce the degree of cellular oxidative damage and apoptosis induced by H2O2. In addition, resveratrol was demonstrated to increase the expression of SPATA12 by activating AP-1, and it may be used as a nontoxic activator of the SPATA12 gene. In conclusion, these results suggest that SPATA12 is upregulated by oxidative stress via AP-1, and that the exogenous expression of SPATA12 protects against H2O2-induced oxidative damage and apoptosis.
Collapse
Affiliation(s)
- Daobing Wu
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Dan Li
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Zhiyong Liu
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Xiaowen Liu
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Shihua Zhou
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Hongyan Duan
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| |
Collapse
|
22
|
Backes TM, Rössler OG, Hui X, Grötzinger C, Lipp P, Thiel G. Stimulation of TRPV1 channels activates the AP-1 transcription factor. Biochem Pharmacol 2018; 150:160-169. [PMID: 29452097 DOI: 10.1016/j.bcp.2018.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 02/08/2018] [Indexed: 02/09/2023]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) channels were originally described as the receptors of capsaicin, the main constituent of hot chili pepper. The biological functions of TRPV1 channels include pain sensation and inflammatory thermal hyperalgesia. Here, we show that stimulation of HEK293 cells expressing TRPV1 channels (H2C1 cells) with capsaicin or the TRPV1 ligand resiniferatoxin activated transcription mediated by the transcription factor AP-1. No cell death was occurring under these experimental conditions. The AP-1 activity was not altered in capsaicin or resiniferatoxin-stimulated HEK293 cells lacking TRPV1. We identified the AP-1 DNA binding site as the capsaicin/resiniferatoxin-responsive element. Stimulation with the TRPV1 ligand N-arachidonoyldopamine increased AP-1 activity in a TRPV1-dependent and TRPV1-independent manner. Stimulation of TRPV1 channels induced an influx of Ca2+ into the cells and this rise in intracellular Ca2+ was essential for activating AP-1 in capsaicin or resiniferatoxin-stimulated cells. N-arachidonoyldopamine stimulation induced a rise in intracellular Ca2+ in a TRPV-1 dependent and independent manner. AP-1 is a dimeric transcription factor, composed of proteins of the c-Jun, c-Fos and ATF families. Stimulation of TRPV1 channels with capsaicin increased c-Jun and c-Fos biosynthesis in H2C1 cells. The signal transduction of capsaicin, leading to enhanced AP-1-mediated transcription, required extracellular signal-regulated protein kinase ERK1/2 as a signal transducer and the activation of the transcription factors c-Jun and ternary complex factor. Together, these data suggest that the intracellular functions of TRPV1 stimulation may rely on the activation of a stimulus-regulated protein kinase and stimulus-responsive transcription factors.
Collapse
Affiliation(s)
- Tobias M Backes
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Xin Hui
- Anatomy and Cell Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Carsten Grötzinger
- Department of Internal Medicine, Division of Hepatology and Gastroenterology, Charité, D-13353 Berlin, Germany
| | - Peter Lipp
- Anatomy and Cell Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
| |
Collapse
|
23
|
Resveratrol suppresses hyperglycemia-induced activation of NF-κB and AP-1 via c-Jun and RelA gene regulation. Med J Islam Repub Iran 2018; 32:10. [PMID: 30159261 PMCID: PMC6108266 DOI: 10.14196/mjiri.32.10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Indexed: 01/06/2023] Open
Abstract
Background: Resveratrol (RSV) provides several important biological functions in wide variety of cells. In this study, we investigated the molecular mechanisms underlying anti-inflammatory effect of RSV on HepG2 cells by assessing the gene expression of RelA and c-Jun- subunits of NF-κB and AP-1 transcription factors.
Methods: HepG2 cells were settled in a serum- free medium with high concentrations of glucose (30 mM) and insulin (1 µM) overnight and were then incubated with RSV (5, 10, and 20 µM) for 24 and 48 hours. Real time quantitative polymerase chain reaction (qRT-PCR) was used to determine RelA and c-Jun expression.
Results: RSV diminished hyperglycemia/hyperinsulinemia stimulated expression of c-Jun dose- dependently after 24 and 48 hours (p<0.05). In addition, RelA gene expression was decreased dose-dependently in all RSV doses after 48-hour incubation (p<0.05). Our results indicated that RSV may reduce NF-κB and AP-1 activity via RelA and c-Jun gene regulation.
Conclusion: The findings of the present study demonstrated that RSV may be considered as a preventative and therapeutic agent for antagonizing inflammation in Hepatocellular carcinoma (HCC).
Collapse
|
24
|
Yang H, Chen Q, Sun F, Zhao N, Wen L, Li L, Ran G. Down-regulation of the klf5-c-Myc interaction due to klf5 phosphorylation mediates resveratrol repressing the caveolin-1 transcription through the PI3K/PKD1/Akt pathway. PLoS One 2017; 12:e0189156. [PMID: 29211809 PMCID: PMC5718516 DOI: 10.1371/journal.pone.0189156] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 11/06/2017] [Indexed: 12/05/2022] Open
Abstract
Resveratrol (RSV), a natural polyphenol, has been reported to produce effect on genes transcription in lipid metabolism. In this study, we aim to explore the novel mechanisms of RSV on the regulation of caveolin-1 (Cav-1) transcription. Via body weight, blood glucose, serum lipid, and liver pathology detection, we found that RSV decreased body weight, blood glucose and lipid accumulation in rats fed high-fat diet. Based on co-immunoprecipitation (Co-IP) and western blotting assay, we found that RSV up-regulated klf5 phosphorylation and decreased the interaction of klf5 with c-Myc, which were accompanied by down-regulation of Cav-1 expression in livers of rats fed with high-fat diet. Moreover, in HEK293 cells, we observed RSV enhanced klf5 phosphorylation and separated the interaction of klf5 with c-Myc through inhibiting the activation of PI3K/PKD1/Akt pathway, which maybe promoted c-Myc binding to the promoter to inhibit Cav-1 expression. The results of the present study demonstrated that RSV activated klf5 phosphorylation by inhibiting PI3K/PKD1/Akt pathway, and then attenuated the interaction of klf5 with c-Myc, subsequently probably promoted the c-Myc binding to the promoter to repress Cav-1 expression.
Collapse
Affiliation(s)
- Hui Yang
- Department of Clinical Nutrition, Kecheng People's Hospital, Quzhou, Zhejiang Province, China
| | - Qiuxia Chen
- Department of Clinical Nutrition, Kecheng People's Hospital, Quzhou, Zhejiang Province, China
| | - Fangyun Sun
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Nana Zhao
- School of Basic Medical Sciences, Shandong Medical College, Linyi, Shandong Province, China
| | - Lirong Wen
- School of Economics, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Lin Li
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Gai Ran
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
- * E-mail:
| |
Collapse
|
25
|
Jiang Z, Chen K, Cheng L, Yan B, Qian W, Cao J, Li J, Wu E, Ma Q, Yang W. Resveratrol and cancer treatment: updates. Ann N Y Acad Sci 2017; 1403:59-69. [PMID: 28945938 DOI: 10.1111/nyas.13466] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/13/2017] [Accepted: 08/14/2017] [Indexed: 12/21/2022]
Abstract
Cancer, a growing health problem worldwide, affects millions of people every year. The overall survival rates of most cancers have been prolonged owing to the efforts of clinicians and scientists. However, some tumors develop resistance to chemoradiotherapeutic agents, and the cancer research community continues to search for effective sensitizers. Resveratrol, a natural polyphenolic phytoalexin, has shown promising effects in inhibiting proliferation and cancer progression in several tumor models. However, its molecular mechanisms and applications in chemotherapy and radiotherapy have yet to be fully determined. In this concise review, we highlight the role and related molecular mechanisms of resveratrol in cancer treatment. In particular, we focus on the role of resveratrol in the tumor microenvironment and the sensitization of cancer cells for chemotherapy and radiotherapy. Resveratrol shows promising efficacies in cancer treatment and may be applied in clinical therapy, but it requires further clinical study.
Collapse
Affiliation(s)
- Zhengdong Jiang
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Ke Chen
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Liang Cheng
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Bin Yan
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Weikun Qian
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Junyu Cao
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Jie Li
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Erxi Wu
- Department of Neurosurgery, Baylor Scott & White Health, Temple, Texas.,Department of Surgery, Texas A&M University College of Medicine, Temple, Texas.,Department of Pharmaceutical Sciences, Texas A&M University College of Pharmacy, College Station, Texas
| | - Qingyong Ma
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Wei Yang
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
26
|
Le Rossignol S, Ketheesan N, Haleagrahara N. Redox-sensitive transcription factors play a significant role in the development of rheumatoid arthritis. Int Rev Immunol 2017; 37:129-143. [PMID: 28898138 DOI: 10.1080/08830185.2017.1363198] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease which is associated with significant morbidity. Redox sensitive transcription factors including NF-κB, HIF, AP-1, and Nrf2 are intimately involved in the pathogenesis of RA. The treatment of this disease is limited by the elusive nature of the pathogenesis of RA. NF-κB is crucial for the maturation of immune cells as well as production of TNFα and MMPs, which escalate RA. HIF is essential for activation of inflammatory cells, angiogenesis and pannus formation in RA. AP-1 regulates cytokine and MMP production as well as synovial hyperplasia which are key processes in RA. Nrf2 is involved with chondrogenesis, osteoblastogenesis, prostaglandin secretion and ROS production in RA. Targeting two or more of these transcription factors may result in increased efficacy than either therapy in isolation. This review will highlight the control specific mediators on these transcription factors, the subsequent effect of these transcription factors once activated, and then mesh this with the pathogenesis of RA. The elucidation of key transcription factor regulation in the pathogenesis of RA may highlight the novel therapy interventions which may prove to have a greater efficacy than those therapies currently available.
Collapse
Affiliation(s)
- Scott Le Rossignol
- a College of Medicine and Dentistry , James Cook University Townsville , Queensland , Australia
| | - Natkunam Ketheesan
- b Biomedicine, College of Public Health, Medical and Veterinary Sciences , James Cook University , Townsville , Queensland , Australia.,c Australian Institute of Tropical Health and Medicine , James Cook University , Townsville , Queensland , Australia
| | - Nagaraja Haleagrahara
- b Biomedicine, College of Public Health, Medical and Veterinary Sciences , James Cook University , Townsville , Queensland , Australia.,c Australian Institute of Tropical Health and Medicine , James Cook University , Townsville , Queensland , Australia
| |
Collapse
|
27
|
Thiel G, Lesch A, Rubil S, Backes TM, Rössler OG. Regulation of Gene Transcription Following Stimulation of Transient Receptor Potential (TRP) Channels. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 335:167-189. [PMID: 29305012 DOI: 10.1016/bs.ircmb.2017.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Transient receptor potential (TRP) channels belong to a heterogeneous superfamily of cation channels that are involved in the regulation of numerous biological functions, including regulation of Ca2+ and glucose homeostasis, tumorigenesis, temperature, and pain sensation. To understand the functions of TRP channels, their associated intracellular signaling pathways and molecular targets have to be identified on the cellular level. Stimulation of TRP channels frequently induces an influx of Ca2+ ions into the cells and the subsequent activation of protein kinases. These intracellular signal transduction pathways ultimately induce changes in the gene expression pattern of the cells. Here, we review the effects of TRPC6, TRPM3, and TRPV1 channel stimulation on the activation of the stimulus-responsive transcription factors AP-1, CREB, Egr-1, Elk-1, and NFAT. Following activation, these transcription factors induce the transcription of delayed response genes. We propose that many biological functions of TRP channels can be explained by the activation of stimulus-responsive transcription factors and their delayed response genes. The proteins encoded by those delayed response genes may be responsible for the biochemical and physiological changes following TRP channel activation.
Collapse
Affiliation(s)
- Gerald Thiel
- Saarland University Medical Faculty, Homburg, Germany.
| | - Andrea Lesch
- Saarland University Medical Faculty, Homburg, Germany
| | - Sandra Rubil
- Saarland University Medical Faculty, Homburg, Germany
| | | | | |
Collapse
|
28
|
Lesch A, Rössler OG, Thiel G. Extracellular Signal-Regulated Protein Kinase, c-Jun N-Terminal Protein Kinase, and Calcineurin Regulate Transient Receptor Potential M3 (TRPM3) Induced Activation of AP-1. J Cell Biochem 2017; 118:2409-2419. [PMID: 28112420 DOI: 10.1002/jcb.25904] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 01/20/2017] [Indexed: 12/27/2022]
Abstract
Stimulation of transient receptor potential M3 (TRPM3) cation channels with pregnenolone sulfate induces an influx of Ca2+ ions into the cells and a rise in the intracellular Ca2+ concentration, leading to the activation of the activator protein-1 (AP-1) transcription factor. Here, we show that expression of a constitutively active mutant of the Ca2+ /calmodulin-dependent protein phosphatase calcineurin attenuated pregnenolone sulfate-induced AP-1 activation in TRPM3-expressing cells. Likewise, expression of the regulatory B subunit of calcineurin reduced AP-1 activity in the cells following stimulation of TRPM3 channels. MAP kinase phosphatase-1 has been shown to attenuate TRPM3-mediated AP-1 activation. Here, we show that pregnenolone sulfate-induced stimulation of TRPM3 triggers the phosphorylation and activation of the MAP kinase extracellular signal-regulated protein kinase (ERK1/2). Pharmacological and genetic experiments revealed that stimulation of ERK1/2 is essential for the activation of AP-1 in cells expressing stimulated TRPM3 channels. ERK1/2 is required for the activation of the transcription factor c-Jun, a key component of the AP-1 transcription factor, and regulates c-Fos promoter activity. In addition, we identified c-Jun N-terminal protein kinase (JNK1/2) as a second signal transducer of activated TRPM3 channels. Together, the data show that calcineurin and the protein kinases ERK1/2 and JNK1/2 are important regulators within the signaling cascade connecting TRPM3 channel stimulation with increased AP-1-regulated transcription. J. Cell. Biochem. 118: 2409-2419, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Andrea Lesch
- Saarland University, Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Saarland University, Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Gerald Thiel
- Saarland University, Medical Faculty, Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| |
Collapse
|
29
|
Hyperforin activates gene transcription involving transient receptor potential C6 channels. Biochem Pharmacol 2017; 129:96-107. [DOI: 10.1016/j.bcp.2017.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/17/2017] [Indexed: 12/26/2022]
|
30
|
Thiel G, Rössler OG. Resveratrol regulates gene transcription via activation of stimulus-responsive transcription factors. Pharmacol Res 2017; 117:166-176. [DOI: 10.1016/j.phrs.2016.12.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/16/2016] [Accepted: 12/18/2016] [Indexed: 01/10/2023]
|
31
|
Resveratrol improves TNF-α-induced endothelial dysfunction in a coculture model of a Caco-2 with an endothelial cell line. J Nutr Biochem 2016; 36:21-30. [DOI: 10.1016/j.jnutbio.2016.07.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 07/05/2016] [Accepted: 07/05/2016] [Indexed: 12/12/2022]
|
32
|
Rössler OG, Thiel G. Specificity of Stress-Responsive Transcription Factors Nrf2, ATF4, and AP-1. J Cell Biochem 2016; 118:127-140. [PMID: 27278863 DOI: 10.1002/jcb.25619] [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: 11/30/2015] [Accepted: 06/07/2016] [Indexed: 01/15/2023]
Abstract
Cellular stress leads to an upregulation of gene transcription. We asked if there is a specificity in the activation of the stress-responsive transcription factors Nrf2, ATF4, and AP-1/c-Jun, or if activation of these proteins is a redundant cellular answer toward extracellular stressors. Here, we show that oxidative stress, induced by stimulation of the cells with the oxidant arsenite, strongly activated gene transcription via the stress-responsive element (StRE), while phorbol ester or tunicamycin, activators of AP-1/c-Jun or ATF4, respectively, activated AP-1 or nutrient-sensing response element-mediated transcription. Preincubation of the cells with N-acetyl-cysteine or overexpression of thioredoxin selectively attenuated arsenite-induced upregulation of StRE-regulated transcription. Expression of either dominant-negative or constitutively active mutants of Nrf2, ATF4, or c-Jun confirmed that distinct transcription units are regulated by these transcription factors. Physiological stimuli involving the activation of either Gαq-coupled designer receptors or the protein kinases c-Jun N-terminal protein kinase or p38 strongly stimulated transcription via AP-1/c-Jun, with minimal effects on Nrf2 or ATF4-responsive promoters. Thus, activation of transcription by extracellular signaling molecules shows specificity at the level of the chemical nature of the signaling molecule, at the level of the intracellular transduction process, and at the level of signal-responsive transcription factors. J. Cell. Biochem. 118: 127-140, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, Building 44, D-66421, Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, Building 44, D-66421, Homburg, Germany
| |
Collapse
|
33
|
Pan W, Yu H, Huang S, Zhu P. Resveratrol Protects against TNF-α-Induced Injury in Human Umbilical Endothelial Cells through Promoting Sirtuin-1-Induced Repression of NF-KB and p38 MAPK. PLoS One 2016; 11:e0147034. [PMID: 26799794 PMCID: PMC4723256 DOI: 10.1371/journal.pone.0147034] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 12/28/2015] [Indexed: 11/18/2022] Open
Abstract
Inflammation and reactive oxygen species (ROS) play important roles in the pathogenesis of atherosclerosis. Resveratrol has been shown to possess anti-inflammatory and antioxidative stress activities, but the underlying mechanisms are not fully understood. In the present study, we investigated the molecular basis associated with the protective effects of resveratrol on tumor necrosis factor-alpha (TNF-α)-induced injury in human umbilical endothelial cells (HUVECs) using a variety of approaches including a cell viability assay, reverse transcription and quantitative polymerase chain reaction, western blot, and immunofluorescence staining. We showed that TNF-α induced CD40 expression and ROS production in cultured HUVECs, which were attenuated by resveratrol treatment. Also, resveratrol increased the expression of sirtuin 1 (SIRT1); and repression of SIRT1 by small-interfering RNA (siRNA) and the SIRT1 inhibitor Ex527 reduced the inhibitory effects of resveratrol on CD40 expression and ROS generation. In addition, resveratrol downregulated the levels of p65 and phospho-p38 MAPK, but this inhibitory effect was attenuated by the suppression of SIRT1 activity. Moreover, the p38 MAPK inhibitor SD203580 and the nuclear factor (NF)-κB inhibitor pyrrolidine dithiocarbamate (PDTC) achieved similar repressive effects as resveratrol on TNF-α-induced ROS generation and CD40 expression. Thus, our study provides a mechanistic link between resveratrol and the activation of SIRT1, the latter of which is involved in resveratrol-mediated repression of the p38 MAPK/NF-κB pathway and ROS production in TNF-α-treated HUVECs.
Collapse
Affiliation(s)
- Wei Pan
- Provincial Clinical Medical College, Fujian Medical University, Fuzhou, China
| | - Huizhen Yu
- Provincial Clinical Medical College, Fujian Medical University, Fuzhou, China
- Department of Geriatrics, Fujian Provincial Hospital Key Laboratory of Geriatrics, Fujian Medical University, Fuzhou, China
- Fujian Institute of Clinical Geriatrics, Fuzhou, China
| | - Shujie Huang
- Fujian Institute of Clinical Geriatrics, Fuzhou, China
| | - Pengli Zhu
- Provincial Clinical Medical College, Fujian Medical University, Fuzhou, China
- Fujian Institute of Clinical Geriatrics, Fuzhou, China
- * E-mail:
| |
Collapse
|
34
|
Rubil S, Rössler OG, Thiel G. CREB, AP-1, ternary complex factors and MAP kinases connect transient receptor potential melastatin-3 (TRPM3) channel stimulation with increased c-Fos expression. Br J Pharmacol 2015; 173:305-18. [PMID: 26493679 DOI: 10.1111/bph.13372] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 10/08/2015] [Accepted: 10/14/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND AND PURPOSE The rise in intracellular Ca(2+) stimulates the expression of the transcription factor c-Fos. Depending on the mode of entry of Ca(2+) into the cytosol, distinct signal transducers and transcription factors are required. Here, we have analysed the signalling pathway connecting a Ca(2+) influx via activation of transient receptor potential melastatin-3 (TRPM3) channels with enhanced c-Fos expression. EXPERIMENTAL APPROACH Transcription of c-Fos promoter/reporter genes that were integrated into the chromatin via lentiviral gene transfer was analysed in HEK293 cells overexpressing TRPM3. The transcriptional activation potential of c-Fos was measured using a GAL4-c-Fos fusion protein. KEY RESULTS The signalling pathway connecting TRPM3 stimulation with enhanced c-Fos expression requires the activation of MAP kinases. On the transcriptional level, three Ca(2+) -responsive elements, the cAMP-response element and the binding sites for the serum response factor (SRF) and AP-1, are essential for the TRPM3-mediated stimulation of the c-Fos promoter. Ternary complex factors are additionally involved in connecting TRPM3 stimulation with the up-regulation of c-Fos expression. Stimulation of TRPM3 channels also increases the transcriptional activation potential of c-Fos. CONCLUSIONS AND IMPLICATIONS Signalling molecules involved in connecting TRPM3 with the c-Fos gene are MAP kinases and the transcription factors CREB, SRF, AP-1 and ternary complex factors. As c-Fos constitutes, together with other basic region leucine zipper transcription factors, the AP-1 transcription factor complex, the results of this study explain TRPM3-induced activation of AP-1 and connects TRPM3 with the biological functions regulated by AP-1.
Collapse
Affiliation(s)
- Sandra Rubil
- Department of Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, Homburg, Germany
| |
Collapse
|
35
|
Thiel G, Rössler OG. Resveratrol stimulates cyclic AMP response element mediated gene transcription. Mol Nutr Food Res 2015; 60:256-65. [PMID: 26446263 DOI: 10.1002/mnfr.201500607] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/24/2015] [Accepted: 09/28/2015] [Indexed: 11/06/2022]
Abstract
SCOPE Many intracellular effects have been attributed to resveratrol, a polyphenolic phytoalexin found in grapes and in other plants, including the direct regulation of transcription. Here, we have analyzed the impact of resveratrol on gene transcription regulated by the cyclic AMP response element (CRE). METHODS AND RESULTS Transcription of a chromatin-embedded reporter gene with CREs in its regulatory region was significantly elevated in resveratrol-treated 293 human embryonic kidney cells, hepatoma cells and neural stem cells. The CRE thus functions as resveratrol-responsive element. The polyphenols quercetin and naringenin also stimulated CRE-mediated gene transcription, but not in the range of resveratrol. The polyphenol curcumin, in contrast, had no effect upon CRE-regulated transcription. In addition, resveratrol stimulation upregulated the transcriptional activation potentials of the CRE-binding proteins (CREB) and activating transcription factor 2 (ATF2). CONCLUSION CREB exhibits cytoprotective activity by stimulating CRE-regulated genes, while ATF2 has been identified as a tumor suppressor. The fact that resveratrol upregulates CRE-mediated gene transcription and enhances the transcriptional activation potentials of CREB and ATF2 suggests that cytoprotective and tumor suppressive activities of resveratrol may rely-at least in part-on the stimulation of CREB- and ATF2-controlled target genes.
Collapse
Affiliation(s)
- Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, Homburg, Germany
| |
Collapse
|
36
|
Effects of red wine on postprandial stress: potential implication in non-alcoholic fatty liver disease development. Eur J Nutr 2015; 54:497-507. [PMID: 25772634 DOI: 10.1007/s00394-015-0877-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 03/06/2015] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Red wine consumption is considered to be protective against oxidative stress. Diet strongly influences non-alcoholic fatty liver disease, which is associated with oxidative stress and is considered the hepatic manifestation of the metabolic syndrome. METHODS We reviewed the available evidence that investigated the effects of red wine on the postprandial-induced metabolic and oxidative stress in humans. RESULTS After red wine consumption with meal, despite the improvement in non-enzymatic antioxidant capacity and lipoperoxidation markers, the influence of confounding factors such as uric acid should be taken into account. Both uric acid and triglycerides increases, induced by ethanol, could cause liver damage. On the other hand, further researches are required in order to understand the meaning of the induction of antioxidant enzymes by red wine and red wine polyphenols in the context of non-alcoholic fatty liver disease. CONCLUSION In conclusion, inconsistent and contrasting findings exist regarding the potential benefits of red wine consumption against postprandial stress.
Collapse
|
37
|
Rössler OG, Glatzel D, Thiel G. Resveratrol upregulates Egr-1 expression and activity involving extracellular signal-regulated protein kinase and ternary complex factors. Exp Cell Res 2015; 332:116-27. [PMID: 25645941 DOI: 10.1016/j.yexcr.2015.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 01/19/2015] [Accepted: 01/21/2015] [Indexed: 01/08/2023]
Abstract
Many intracellular functions have been attributed to resveratrol, a polyphenolic phytoalexin found in grapes and in other plants. Here, we show that resveratrol induces the expression of the transcription factor Egr-1 in human embryonic kidney cells. Using a chromosomally embedded Egr-1-responsive reporter gene, we show that the Egr-1 activity was significantly elevated in resveratrol-treated cells, indicating that the newly synthesized Egr-1 protein was biologically active. Stimulus-transcription coupling leading to the resveratrol-induced upregulation of Egr-1 expression and activity requires the protein kinases Raf and extracellular signal-regulated protein kinase ERK, while MAP kinase phosphatase-1 functions as a nuclear shut-off device that interrupts the signaling cascade connecting resveratrol stimulation with enhanced Egr-1 expression. On the transcriptional level, Elk-1, a key transcriptional regulator of serum response element-driven gene transcription, connects the intracellular signaling cascade elicited by resveratrol with transcription of the Egr-1 gene. These data were corroborated by the observation that stimulation of the cells with resveratrol increased the transcriptional activation potential of Elk-1. The SRE as well as the GC-rich DNA binding site of Egr-1 function as resveratrol-responsive elements. Thus, resveratrol regulates gene transcription via activation of the stimulus-regulated protein kinases Raf and ERK and the stimulus-responsive transcription factors TCF and Egr-1.
Collapse
Affiliation(s)
- Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, University of Saarland, D-66421 Homburg, Germany
| | - Daniel Glatzel
- Department of Medical Biochemistry and Molecular Biology, University of Saarland, D-66421 Homburg, Germany
| | - Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, University of Saarland, D-66421 Homburg, Germany.
| |
Collapse
|
38
|
Lesch A, Hui X, Lipp P, Thiel G. Transient Receptor Potential Melastatin-3 (TRPM3)–Induced Activation of AP-1 Requires Ca2+ Ions and the Transcription Factors c-Jun, ATF2, and Ternary Complex Factor. Mol Pharmacol 2015; 87:617-28. [DOI: 10.1124/mol.114.095695] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|