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Arkenberg P, Dittmar M. The 24-h profile of the DNA repair enzyme 8-oxoguanine glycosylase 1 (OGG1) is associated with age, TNF-α, and waist circumference in healthy adults. GeroScience 2024; 46:2489-2502. [PMID: 37991642 PMCID: PMC10828295 DOI: 10.1007/s11357-023-01012-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/07/2023] [Indexed: 11/23/2023] Open
Abstract
It is unknown how the DNA repair enzyme OGG1 relates to healthy aging in humans, in particular to inflammaging, that is associated with increased levels of TNF-α. This study aimed (1) to investigate how 24-h profiles for OGG1 change during healthy aging and (2) to analyze the relationship of OGG1 with TNF-α, central body fat, cortisol and oxidative DNA/RNA damage. In a cross-sectional study in 20 healthy older and 20 young women, salivary levels of OGG1, TNF-α, cortisol and oxidative DNA/RNA damage were quantified by ELISAs every 4 h for a 24-h period. Trunk circumferences were taken as measures of central body fat. Older women, compared to young women, exhibited significantly lower protein levels of OGG1 throughout the whole 24-h period, a 2.5 times lower 24-h mean level for OGG1 (P < 0.00001) and loss of 24-h variation of OGG1. Both age groups demonstrated significant 24-h variation for TNF-alpha, cortisol and oxidative damage. The 24-h mean level for TNF-α was more than twice as high in older compared to young women (P = 0.011). Regression analysis detected that age, TNF-α and waist circumference were negative significant predictors of OGG1, explaining 56% of variance of OGG1 (P < 0.00001), while levels of cortisol and oxidative damage were no predictors of OGG1. Results indicate a strong decrease of protein levels of OGG1 and a loss of 24-h variation during natural cellular aging. The negative relationship, found between OGG1 and TNF-α and between OGG1 and waist circumference, suggests involvement of proinflammatory processes in DNA repair.
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Affiliation(s)
- Per Arkenberg
- Department of Human Biology, Zoological Institute, Christian-Albrechts-University, Am Botanischen Garten 9, 24118 Kiel, Germany
| | - Manuela Dittmar
- Department of Human Biology, Zoological Institute, Christian-Albrechts-University, Am Botanischen Garten 9, 24118 Kiel, Germany.
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2
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Corre M, Lebreton A. Regulation of cold-inducible RNA-binding protein (CIRBP) in response to cellular stresses. Biochimie 2024; 217:3-9. [PMID: 37037339 DOI: 10.1016/j.biochi.2023.04.003] [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: 02/27/2023] [Revised: 03/29/2023] [Accepted: 04/07/2023] [Indexed: 04/12/2023]
Abstract
Cold-inducible RNA-Binding Protein (CIRBP) is a general stress-response factor in vertebrates harboring two domains: an RNA-recognition motif and a regulatory domain rich in RG/RGG motifs. CIRBP has been described to bind mRNAs upon various stress conditions (cold, infections, UV, hypoxia …) and regulate their stability and translation. The proteins encoded by its targets are involved in key stress-responsive cellular pathways including apoptosis, inflammation, cell proliferation or translation, thus allowing their coordination. Due to its role in regulating central cellular functions, the expression of CIRBP is tightly controlled. We review here current understanding of the multiple mechanistic layers affecting CIRBP expression and function. Beyond transcriptional regulation by cold-responsive elements and the use of alternative promoters and transcription start sites, CIRBP undergoes various alternative splicing (AS) events which, depending on conditions, modulate the stability of CIRBP transcripts and/or impact the sequence of the encoded polypeptide. Typically, whilst CIRBP expression is induced in the context of hypothermia or viral infection, AS events preferentially address alternative isoforms towards mRNA degradation pathways in response to heat stress or to bacterial-secreted pore forming toxins. Post-translational modifications of CIRBP, mostly in its RGG domain, also condition CIRBP subcellular localization and access to its targets, thereby promoting or inhibiting their expression. For instance, phosphorylation and methylation events gate CIRBP nuclear to cytoplasmic translocation and control its recruitment to stress granules. Considering the therapeutic potential of modulating the expression and function of this central player in stress responses, a fine understanding of CIRBP regulation mechanisms deserves further attention.
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Affiliation(s)
- Morgane Corre
- Institut de biologie de l'ENS (IBENS), École normale supérieure, CNRS, INSERM, Université PSL, 75005, Paris, France
| | - Alice Lebreton
- Institut de biologie de l'ENS (IBENS), École normale supérieure, CNRS, INSERM, Université PSL, 75005, Paris, France; INRAE, Micalis Institute, 78350, Jouy-en-Josas, France.
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3
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Zhang R, Fang K, Mu C, Zhang L. Cold-inducible RNA-binding protein induces inflammatory responses via NF-κB signaling pathway in normal human bronchial epithelial cells infected with streptococcus pneumoniae. Int Immunopharmacol 2024; 127:111338. [PMID: 38064816 DOI: 10.1016/j.intimp.2023.111338] [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: 08/28/2023] [Revised: 11/20/2023] [Accepted: 11/29/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Community-acquired pneumonia causes significant illness and death worldwide, requiring further investigation and intervention. The invasion of Streptococcus pneumoniae (S. pneumoniae, S.p) can lead to serious conditions like meningitis, sepsis, or pneumonia. Extracellular Cold-inducible RNA-binding protein (eCIRP) acts as a damage-associated molecular pattern that triggers inflammatory responses and plays an important role in both acute and chronic inflammatory diseases. It remains unclear whether CIRP is involved in the process of S. pneumoniae infection in normal human bronchial epithelial cells (BEAS-2B). METHODS Cell counting kit (CCK)-8 assay was used to detect the activity of BEAS-2B cells. The subcellular localization of CIRP was detected by immunofluorescence. The mRNA and protein levels of CIRP, nuclear factor kappa-B (NF-κB) p65, toll like receptor-4 (TLR4), interleukin-6 (IL-6) were detected using quantitative real-time PCR (PCR) and Western Blot (WB). The protein expressions of CIRP, IL-1β, IL-6, tumor necrosis factor-α (TNF-α) and monocyte chemoattractant protein-1 (MCP-1) were assessed by enzyme-linked immunosorbent assay (ELISA). RESULTS CIRP affects the activity of BEAS-2B cells induced by S. pneumoniae infection. After infection, CIRP translocates from the nucleus to the cytoplasm, thereby inducing the production of pro-inflammatory cytokines (IL-1β, IL-6, TNF-α, and MCP-1). Additionally, the NF-κB p65 protein increases in infected cells but decreases with si-CIRP interference. Treatment with TLR4 neutralizing antibodies or NF-κB inhibitor effectively reduces the expressions of IL-1β, IL-6, TNF-α, and MCP-1. CONCLUSIONS The infection with S. pneumoniae upregulates CIRP expression and translocates it from the nucleus to the cytoplasm in BEAS-2B cells, leading to the release of proinflammatory factors via activation of NF-κB signaling pathway. CIRP as a key mediator in S. pneumoniae-induced inflammation offers potential targets for therapeutic intervention against community-acquired pneumonia.
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Affiliation(s)
- Rong Zhang
- Emergency Department of the Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, China
| | - Kun Fang
- Emergency Department of the Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, China
| | - Chunyan Mu
- Xuzhou Medical University, Xuzhou, Jiangsu 221000, China
| | - Liang Zhang
- Emergency Department of the Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, China.
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4
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Raza GS, Sodum N, Kaya Y, Herzig KH. Role of Circadian Transcription Factor Rev-Erb in Metabolism and Tissue Fibrosis. Int J Mol Sci 2022; 23:12954. [PMID: 36361737 PMCID: PMC9655416 DOI: 10.3390/ijms232112954] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 09/12/2023] Open
Abstract
Circadian rhythms significantly affect metabolism, and their disruption leads to cardiometabolic diseases and fibrosis. The clock repressor Rev-Erb is mainly expressed in the liver, heart, lung, adipose tissue, skeletal muscles, and brain, recognized as a master regulator of metabolism, mitochondrial biogenesis, inflammatory response, and fibrosis. Fibrosis is the response of the body to injuries and chronic inflammation with the accumulation of extracellular matrix in tissues. Activation of myofibroblasts is a key factor in the development of organ fibrosis, initiated by hormones, growth factors, inflammatory cytokines, and mechanical stress. This review summarizes the importance of Rev-Erb in ECM remodeling and tissue fibrosis. In the heart, Rev-Erb activation has been shown to alleviate hypertrophy and increase exercise capacity. In the lung, Rev-Erb agonist reduced pulmonary fibrosis by suppressing fibroblast differentiation. In the liver, Rev-Erb inhibited inflammation and fibrosis by diminishing NF-κB activity. In adipose tissue, Rev- Erb agonists reduced fat mass. In summary, the results of multiple studies in preclinical models demonstrate that Rev-Erb is an attractive target for positively influencing dysregulated metabolism, inflammation, and fibrosis, but more specific tools and studies would be needed to increase the information base for the therapeutic potential of these substances interfering with the molecular clock.
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Affiliation(s)
- Ghulam Shere Raza
- Research Unit of Biomedicine, Medical Research Center, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland
| | - Nalini Sodum
- Research Unit of Biomedicine, Medical Research Center, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland
| | - Yagmur Kaya
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Marmara University, 34854 Istanbul, Turkey
| | - Karl-Heinz Herzig
- Research Unit of Biomedicine, Medical Research Center, Faculty of Medicine, University of Oulu, 90220 Oulu, Finland
- Oulu University Hospital, University of Oulu, 90220 Oulu, Finland
- Pediatric Gastroenterology and Metabolic Diseases, Pediatric Institute, Poznan University of Medical Sciences, 60-572 Poznań, Poland
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5
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Kozlova MA, Kirillov YA, Makartseva LA, Chernov I, Areshidze DA. Morphofunctional State and Circadian Rhythms of the Liver under the Influence of Chronic Alcohol Intoxication and Constant Lighting. Int J Mol Sci 2021; 22:ijms222313007. [PMID: 34884810 PMCID: PMC8657715 DOI: 10.3390/ijms222313007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 01/10/2023] Open
Abstract
A study of the influence of chronic alcohol intoxication, constant illumination and their combined effects on the morphofunctional state of the rat liver and the circadian rhythms (CR) of the studied parameters of the organism was carried out. It was found that both alcohol and constant illumination caused significant changes in the structure of the liver, as well as in the circadian rhythmicity of micromorphometric parameters of hepatocytes, ALT, and total and direct bilirubin rhythms; however, the combined effects of ethanol and constant illumination had the most significant effect on the studied parameters of the organism. These two factors caused disturbances in the circadian rhythms of the micromorphometric parameters of hepatocytes, disruption of the circadian rhythms of total protein, albumin, AST, ALT, and direct and total bilirubin, as well as disturbances in the expression and rhythmicity of the studied clock genes against a background of the development of an inflammatory process in the liver.
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Affiliation(s)
- Maria A. Kozlova
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
| | - Yuri A. Kirillov
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
| | - Lyudmila A. Makartseva
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
| | - Igor Chernov
- Department of Pathological Anatomy, Tyumen State Medical University, 625023 Tyumen, Russia;
| | - David A. Areshidze
- Laboratory of Cell Pathology, A.P. Avtsyn Research Institute of Human Morphology, 117218 Moscow, Russia; (M.A.K.); (Y.A.K.); (L.A.M.)
- Experimental Tumor Chemotherapy Group, Center for Screening and Preclinical Testing, Institute of Problems of Chemical Physics of the Russian Academy of Science, 142432 Chernogolovka, Russia
- Correspondence: ; Tel.: +7-909-643-37-56
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6
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Yuan Y, Li C, Guo S, Sun C, Ning N, Hao H, Wang L, Bian Y, Liu H, Wang X. Adiponectin improves amyloid-β 31-35-induced circadian rhythm disorder in mice. J Cell Mol Med 2021; 25:9851-9862. [PMID: 34523794 PMCID: PMC8505833 DOI: 10.1111/jcmm.16932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 08/22/2021] [Accepted: 09/01/2021] [Indexed: 12/14/2022] Open
Abstract
Adiponectin is an adipocyte‐derived hormone, which is closely associated with the development of Alzheimer's disease (AD) and has potential preventive and therapeutic significance. In the present study, we explored the relationship between adiponectin and circadian rhythm disorder in AD, the effect of adiponectin on the abnormal expression of Bmal1 mRNA/protein induced by amyloid‐β protein 31‐35 (Aβ31‐35), and the underlying mechanism of action. We found that adiponectin‐knockout mice exhibited amyloid‐β deposition, circadian rhythm disorders and abnormal expression of Bmal1. Adiponectin ameliorated the abnormal expression of the Bmal1 mRNA/protein caused by Aβ31‐35 by inhibiting the activity of glycogen synthase kinase 3β (GSK3β). These results suggest that adiponectin deficiency could induce circadian rhythm disorders and abnormal expression of the Bmal1 mRNA/protein, whilst exogenous administration of adiponectin may improve Aβ31‐35‐induced abnormal expression of Bmal1 by inhibiting the activity of GSK3β, thus providing a novel idea for the treatment of AD.
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Affiliation(s)
- Yuan Yuan
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China.,Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China
| | - Chen Li
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China
| | - Shuai Guo
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China
| | - Cong Sun
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China
| | - Na Ning
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China
| | - Haihu Hao
- Department of Orthopedics, Shanxi Bethune Hospital & Shanxi Academy of Medical Sciences, Taiyuan, China
| | - Li Wang
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China.,Department of Pathology, Shanxi Medical University, Taiyuan, China
| | - Yunfei Bian
- Department of Cardiology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Xiaohui Wang
- Basic Medical Sciences Center, Shanxi Medical University, Taiyuan, China.,Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, Taiyuan, China.,Department of Pathology, Shanxi Medical University, Taiyuan, China
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7
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Gao Y, Wu Y, Zhang N, Yuan H, Wang F, Xu H, Yu J, Ma J, Hou S, Cao X. IDH1 gene mutation activates Smad signaling molecules to regulate the expression levels of cell cycle and biological rhythm genes in human glioma U87‑MG cells. Mol Med Rep 2021; 23:354. [PMID: 33760141 PMCID: PMC7974315 DOI: 10.3892/mmr.2021.11993] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 02/09/2021] [Indexed: 02/07/2023] Open
Abstract
Isocitrate dehydrogenase1 (IDH1) mutation is the most important genetic change in glioma. The most common IDH1 mutation results in the amino acid substitution of arginine 132 (Arg/R132), which is located at the active site of the enzyme. IDH1 Arg132His (R132H) mutation can reduce the proliferative rate of glioma cells. Numerous diseases follow circadian rhythms, and there is growing evidence that circadian disruption may be a risk factor for cancer in humans. Dysregulation of the circadian clock serves an important role in the development of malignant tumors, including glioma. Brain-Muscle Arnt-Like protein 1 (BMAL1) and Circadian Locomotor Output Cycles Kaput (CLOCK) are the main biological rhythm genes. The present study aimed to further study whether there is an association between IDH1 R132H mutation and biological rhythm in glioma, and whether this affects the occurrence of glioma. The Cancer Genome Atlas (TCGA) database was used to detect the expression levels of the biological rhythm genes BMAL1 and CLOCK in various types of tumor. Additionally, U87-MG cells were infected with wild-type and mutant IDH1 lentiviruses. Colony formation experiments were used to detect cell proliferation in each group, cell cycle distribution was detected by flow cytometry and western blotting was used to detect the expression levels of wild-type and mutant IDH1, cyclins, biological rhythm genes and Smad signaling pathway-associated genes in U87-MG cells. TCGA database results suggested that BMAL1 and CLOCK were abnormally expressed in glioma. Cells were successfully infected with wild-type and mutant IDH1 lentiviruses. Colony formation assay revealed decreased cell proliferation in the IDH1 R132H mutant group. The cell cycle distribution detected by flow cytometry indicated that IDH1 gene mutation increased the G1 phase ratio and decreased the S phase ratio in U87-MG cells. The western blotting results demonstrated that IDH1 R132H mutation decreased the expression levels of the S phase-associated proteins Cyclin A and CDK2, and increased the expression levels of the G1 phase-associated proteins Cyclin D3 and CDK4, but did not significantly change the expression levels of the G2/M phase-associated protein Cyclin B1. The expression levels of the positive and negative rhythm regulation genes BMAL1, CLOCK, period (PER s (PER1, 2 and 3) and cryptochrom (CRY)s (CRY1 and 2) were significantly decreased, those of the Smad signaling pathway-associated genes Smad2, Smad3 and Smad2-3 were decreased, and those of phosphorylated (p)-Smad2, p-Smad3 and Smad4 were increased. Therefore, the present results suggested that the IDH1 R132H mutation may alter the cell cycle and biological rhythm genes in U87-MG cells through the TGF-β/Smad signaling pathway.
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Affiliation(s)
- Yongying Gao
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Yanwei Wu
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Ningmei Zhang
- Department of Pathology, Tumor Hospital, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Hongmei Yuan
- Functional Department, Ningxia Hui Autonomous Region People's Hospital, Yinchuan, Ningxia 750021, P.R. China
| | - Fei Wang
- Department of Pathology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia 750001, P.R. China
| | - Hui Xu
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Jiaxiang Yu
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Jie Ma
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Shaozhang Hou
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Xiangmei Cao
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
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8
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Huang H, Li Z, Ruan Y, Feng W, Chen J, Li X, Ouyang L, Huang H. Circadian rhythm disorder: a potential inducer of vascular calcification? J Physiol Biochem 2020; 76:513-524. [PMID: 32945991 DOI: 10.1007/s13105-020-00767-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 09/14/2020] [Indexed: 12/24/2022]
Abstract
Over the past decades, circadian rhythm has drawn a great attention in cardiovascular diseases. The expressions of rhythm genes fluctuate in accordance with the diurnal changes of vascular physiology, which highlights the pivotal effect of vascular clock. Recent researches show that the circadian clock can directly regulate the synthetic and secretory function of endothelial cells and phenotypic switch of vascular smooth muscle cells to adjust vascular relaxation and contraction. Importantly, dysfunction of vascular cells is involved in vascular calcification. Secretion of osteogenic cytokines and calcified vesicles in the vessel, osteogenic phenotype switch of vascular smooth muscle cells are all implicated in the calcification process. Moreover, circadian rhythm disorder can lead to abnormal hormone secretion, oxidative stress, inflammatory reaction, and autophagy, all of which should not be ignored in vascular calcification. Vascular senescence is another pathogenetic mechanism in vascular calcification. Accelerated vascular senescence may act as an important intermediate factor to promote vascular calcification in circadian rhythm disorders. In this review, we elaborate the potential effect of circadian rhythm disorder in vascular calcification and try to provide a new direction in the prevention of vascular calcification.
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Affiliation(s)
- Haoran Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- Department of Pediatric Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhaohuai Li
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yuyi Ruan
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weijing Feng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jie Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaoxue Li
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
| | - Liu Ouyang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hui Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China.
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9
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Yuxiang L, Fujiu K. Frozen Heart and Arrhythmia. Int Heart J 2019; 60:1019-1021. [PMID: 31564707 DOI: 10.1536/ihj.19-407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Liu Yuxiang
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo
| | - Katsuhito Fujiu
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo.,Department of Advanced Cardiology, Graduate School of Medicine, The University of Tokyo
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10
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Ertosun MG, Kocak G, Ozes ON. The regulation of circadian clock by tumor necrosis factor alpha. Cytokine Growth Factor Rev 2019; 46:10-16. [PMID: 31000463 DOI: 10.1016/j.cytogfr.2019.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/23/2019] [Accepted: 04/01/2019] [Indexed: 12/13/2022]
Abstract
All organisms display circadian rhythms which are under the control of the circadian clock located in the hypothalamus at the suprachiasmatic nucleus, (SCN). The circadian rhythms allow individuals to adjust their physiological activities and daily behavior for the diurnal changes in the living environment. To achieve these, all metabolic processes are aligned with the sleep/wake and fasting/feeding cycles. Subtle changes of daily behavior or food intake can result in misalignment of circadian rhythms. This can cause development of variety of metabolic diseases and even cancer. Although light plays a pivotal role for the activation of the master clock in SCN, the peripheral secondary clocks (or non-SCN), such as melatonin, growth hormone (GH), insulin, adiponectin and Ghrelin also are important in maintaining the circadian rhythms in the brain and peripheral organs. In recent years, growing body of evidence strongly suggest that CA2+ signaling, tumor necrosis factor alpha (TNFα) and transforming growth factor beta (TGFβ) also play very important roles in the regulation of circadian rhythms by regulating the transcription of the clock genes.
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Affiliation(s)
- Mustafa Gokhan Ertosun
- Akdeniz University School of Medicine, Department of Plastic, Reconstructive & Anesthetic Surgery, Turkey.
| | - Gamze Kocak
- Akdeniz University School of Medicine, Department of Medical Biology and Genetics, Turkey.
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11
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Wang L, Zhang R, Hou X, Wang C, Guo S, Ning N, Sun C, Yuan Y, Li L, Hölscher C, Wang X. DA-JC1 improves learning and memory by antagonizing Aβ31-35-induced circadian rhythm disorder. Mol Brain 2019; 12:14. [PMID: 30744651 PMCID: PMC6371467 DOI: 10.1186/s13041-019-0432-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/31/2019] [Indexed: 12/13/2022] Open
Abstract
Studies have shown that a normal circadian rhythm is crucial to learning and memory. Circadian rhythm disturbances that occur at early stages of Alzheimer’s disease (AD) aggravate the progression of the disease and further reduce learning and memory in AD patients. The novel, dual GLP-1R/GIPR agonist DA-JC1 has been found to exert a stronger hypoglycemic effect than a GLP-1R agonist alone and has been shown to exert neuroprotective effects. However, it is not clear whether DA-JC1 improves the Aβ31–35-induced decline in learning and memory ability by restoring disrupted circadian rhythms. In the present study, we carried out a mouse wheel-running experiment and Morris water maze test (MWM) and found that DA-JC1 could effectively improve the decline of learning and memory and circadian rhythm disorders induced by Aβ31–35. After downregulating Per2 expression via lentivirus-shPer2 in the hippocampus and the hippocampal HT22 cells, we found that circadian rhythm disorders occurred, and that DA-JC1 could not improve the impaired learning and memory. These results suggest that DA-JC1 improves damage to learning and memory by antagonizing circadian rhythm disorders induced by Aβ31–35. The outcome of this ongoing study may provide a novel therapeutic intervention for AD in the future.
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Affiliation(s)
- Li Wang
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Rui Zhang
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Xiaohong Hou
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Changtu Wang
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China.,Laboratory of Chronobiology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Shuai Guo
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Na Ning
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Cong Sun
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Yuan Yuan
- Laboratory of Morphology, Department of Basic Medical Sciences, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Lin Li
- Key Laboratory of Cellular Physiology, Shanxi Medical University, Taiyuan, People's Republic of China
| | - Christian Hölscher
- Second Hospital, Shanxi Medical University, Taiyuan, People's Republic of China.,Biomedical and Life Science, Faculty of Health and Medicine, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Xiaohui Wang
- Department of Pathology, Shanxi Medical University, Taiyuan, People's Republic of China. .,Laboratory of Chronobiology, Shanxi Medical University, Taiyuan, People's Republic of China. .,Laboratory of Morphology, Department of Basic Medical Sciences, Shanxi Medical University, Taiyuan, People's Republic of China.
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12
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A noncanonical role for the engulfment gene ELMO1 in neutrophils that promotes inflammatory arthritis. Nat Immunol 2019; 20:141-151. [PMID: 30643265 PMCID: PMC6402828 DOI: 10.1038/s41590-018-0293-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 12/04/2018] [Indexed: 12/15/2022]
Abstract
Rheumatoid arthritis is characterized by progressive joint inflammation and affects ~1% of the human population. We noted single nucleotide polymorphisms (SNPs) in the apoptotic cell engulfment genes ELMO1, DOCK2, and RAC1 linked to rheumatoid arthritis. As ELMO1 promotes cytoskeletal reorganization during engulfment, we hypothesized that ELMO1 loss would worsen inflammatory arthritis. Surprisingly, Elmo1-deficient mice showed reduced joint inflammation in acute and chronic arthritis models. Genetic and cell biological studies revealed that ELMO1 associates with receptors linked to neutrophil function in arthritis and regulates activation and early neutrophil recruitment to the joints, without general inhibition of inflammatory responses. Further, neutrophils from peripheral blood of human donors that carry the SNP in ELMO1 associated with arthritis display increased migratory capacity, whereas ELMO1 knockdown reduces human neutrophil migration to chemokines linked to arthritis. These data identify ‘non-canonical’ roles for ELMO1 as an important cytoplasmic regulator of specific neutrophil receptors and promoter of arthritis.
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13
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Rao M, Ke D, Cheng G, Hu S, Wu Y, Wang Y, Zhou F, Liu H, Zhu C, Xia W. The regulation of CIRBP by transforming growth factor beta during heat shock-induced testicular injury. Andrology 2018; 7:244-250. [PMID: 30461215 DOI: 10.1111/andr.12566] [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: 04/15/2018] [Revised: 09/26/2018] [Accepted: 10/29/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Cold-inducible RNA-binding protein (CIRBP) is associated with cell stress. However, its upstream regulatory factors are still largely unknown. OBJECTIVES This study investigated whether CIRBP expression was regulated by transforming growth factor beta (TGF-β) during the process of heat-induced testicular damage. MATERIALS AND METHODS Ten male adult ICR mice were allocated to heat treatment (scrotal hyperthermia at 43 °C for 30 min, n = 5) and control group (n = 5); CIRBP and TGF-β1, TGF-β2, and TGF-β3 expression levels in the testis in mRNA and protein were analyzed. Then, we conducted in vivo and in vitro studies to investigate the regulatory effects of TGF-β on CIRBP. In the in vivo study, male adult ICR mice were subjected to testicular hyperthermia followed by a local testicular injection of TGF-β antagonist (non-selective TGF-β I/II receptor inhibitor, 5 μg or 10 μg). In the in vitro study, GC2-spd cells were cultured under 43 °C for 30 min or with different TGF-β isoforms (10 ng/mL), and CIRBP expression levels in the testis and GC2-spd cells were analyzed 24 and 48 h, respectively, after treatment. RESULTS As a result, heat treatment significantly downregulated the relative CIRBP mRNA and protein expression (p = 0.006 and 0.011), and significantly upregulated TGF-β2 and TGF-β3 expression levels (p = 0.022 and 0.04, for mRNA, and p = 0.001 for both protein levels). Local testicular injection of 10 μg TGF-β antagonist significantly attenuated heat-induced histological damage to the testes and CIRBP downregulation (p = 0.038). Furthermore, TGF-β2 and TGF-β3 significantly downregulated CIRBP mRNA and protein expression in GC2-spd cells (all p < 0.01), exerting a similar effect to heat treatment. DISCUSSION AND CONCLUSION Our in vivo and in vitro experiments demonstrated that heat-induced CIRBP downregulation in the testes was mediated by the upregulation of TGF-β. Further studies are needed to clarify the molecular mechanisms underlying these processes.
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Affiliation(s)
- M Rao
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Reproduction and Genetics, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - D Ke
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - G Cheng
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - S Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Wu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Wang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - F Zhou
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - H Liu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - C Zhu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Reproductive Medicine Center, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - W Xia
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Reproductive Medicine Center, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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14
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Lujan DA, Ochoa JL, Hartley RS. Cold-inducible RNA binding protein in cancer and inflammation. WILEY INTERDISCIPLINARY REVIEWS-RNA 2018; 9. [PMID: 29322631 DOI: 10.1002/wrna.1462] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/17/2017] [Accepted: 11/29/2017] [Indexed: 12/17/2022]
Abstract
RNA binding proteins (RBPs) play key roles in RNA dynamics, including subcellular localization, translational efficiency and metabolism. Cold-inducible RNA binding protein (CIRP) is a stress-induced protein that was initially described as a DNA damage-induced transcript (A18 hnRNP), as well as a cold-shock domain containing cold-stress response protein (CIRBP) that alters the translational efficiency of its target messenger RNAs (mRNAs). This review summarizes recent work on the roles of CIRP in the context of inflammation and cancer. The function of CIRP in cancer appeared to be solely driven though its functions as an RBP that targeted cancer-associated mRNAs, but it is increasingly clear that CIRP also modulates inflammation. Several recent studies highlight roles for CIRP in immune responses, ranging from sepsis to wound healing and tumor-promoting inflammation. While modulating inflammation is an established role for RBPs that target cytokine mRNAs, CIRP appears to modulate inflammation by several different mechanisms. CIRP has been found in serum, where it binds the TLR4-MD2 complex, acting as a Damage-associated molecular pattern (DAMP). CIRP activates the NF-κB pathway, increasing phosphorylation of Iκκ and IκBα, and stabilizes mRNAs encoding pro-inflammatory cytokines. While CIRP promotes higher levels of pro-inflammatory cytokines in certain cancers, it also decreases inflammation to accelerate wound healing. This dichotomy suggests that the influence of CIRP on inflammation is context dependent and highlights the importance of detailing the mechanisms by which CIRP modulates inflammation. WIREs RNA 2018, 9:e1462. doi: 10.1002/wrna.1462 This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications.
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Affiliation(s)
- Daniel A Lujan
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine and University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
| | - Joey L Ochoa
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine and University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
| | - Rebecca S Hartley
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine and University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
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15
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Recent progress in the research of cold-inducible RNA-binding protein. Future Sci OA 2017; 3:FSO246. [PMID: 29134130 PMCID: PMC5674272 DOI: 10.4155/fsoa-2017-0077] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/16/2017] [Indexed: 12/22/2022] Open
Abstract
Cold-inducible RNA-binding protein (CIRP) is a cold-shock protein which can be induced after exposure to a moderate cold-shock in different species ranging from amphibians to humans. Expression of CIRP can also be regulated by hypoxia, UV radiation, glucose deprivation, heat stress and H2O2, suggesting that CIRP is a general stress-response protein. In response to stress, CIRP can migrate from the nucleus to the cytoplasm and regulate mRNA stability through its binding site on the 3'-UTR of its targeted mRNAs. Through the regulation of its targets, CIRP has been implicated in multiple cellular process such as cell proliferation, cell survival, circadian modulation, telomere maintenance and tumor formation and progression. In addition, CIRP can also exert its functions by directly interacting with intracellular signaling proteins. Moreover, CIRP can be secreted out of cells. Extracellular CIRP functions as a damage-associated molecular pattern to promote inflammatory responses and plays an important role in both acute and chronic inflammatory diseases. Here, we summarize novel findings of CIRP investigation and hope to provide insights into the role of CIRP in cell biology and diseases.
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16
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Zhu X, Bührer C, Wellmann S. Cold-inducible proteins CIRP and RBM3, a unique couple with activities far beyond the cold. Cell Mol Life Sci 2016; 73:3839-59. [PMID: 27147467 PMCID: PMC5021741 DOI: 10.1007/s00018-016-2253-7] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 04/22/2016] [Accepted: 04/26/2016] [Indexed: 12/21/2022]
Abstract
Cold-inducible RNA-binding protein (CIRP) and RNA-binding motif protein 3 (RBM3) are two evolutionarily conserved RNA-binding proteins that are transcriptionally upregulated in response to low temperature. Featuring an RNA-recognition motif (RRM) and an arginine-glycine-rich (RGG) domain, these proteins display many similarities and specific disparities in the regulation of numerous molecular and cellular events. The resistance to serum withdrawal, endoplasmic reticulum stress, or other harsh conditions conferred by RBM3 has led to its reputation as a survival gene. Once CIRP protein is released from cells, it appears to bolster inflammation, contributing to poor prognosis in septic patients. A variety of human tumor specimens have been analyzed for CIRP and RBM3 expression. Surprisingly, RBM3 expression was primarily found to be positively associated with the survival of chemotherapy-treated patients, while CIRP expression was inversely linked to patient survival. In this comprehensive review, we summarize the evolutionary conservation of CIRP and RBM3 across species as well as their molecular interactions, cellular functions, and roles in diverse physiological and pathological processes, including circadian rhythm, inflammation, neural plasticity, stem cell properties, and cancer development.
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Affiliation(s)
- Xinzhou Zhu
- University Children's Hospital Basel (UKBB), Spitalstrasse 33, 4056, Basel, Switzerland
| | - Christoph Bührer
- Department of Neonatology, Charité University Medical Center, Berlin, Germany
| | - Sven Wellmann
- University Children's Hospital Basel (UKBB), Spitalstrasse 33, 4056, Basel, Switzerland.
- University of Basel, Basel, Switzerland.
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17
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Abstract
Up to 50% of patients with autoimmune diseases show an impairment of health-related quality of life and exhibit depression-like symptoms. The immune system not only leads to inflammation in affected organs, but also mediates behavior abnormalities including fatigue and depression-like symptoms. This review focuses on the different pathways involved in the communication of the immune system with the neuronal network and the body's timing system. The latter is built up by a hierarchically organized expression of clock genes. As discussed here, the activation of the immune system interferes with high amplitude expression of clock genes, an effect which may play a pivotal role in depression-like behavior in autoimmune diseases.
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Affiliation(s)
- Christopher R Pryce
- Preclinical Laboratory for Translational Research into Affective Disorders, Department of Psychiatry, Psychotherapy & Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland
| | - Adriano Fontana
- Institute of Experimental Immunology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland.
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18
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Lopez MA, Meier D, Wong WWL, Fontana A. TNF induced inhibition of Cirbp expression depends on RelB NF-κB signalling pathway. Biochem Biophys Rep 2015; 5:22-26. [PMID: 28955803 PMCID: PMC5600431 DOI: 10.1016/j.bbrep.2015.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 10/27/2015] [Accepted: 11/09/2015] [Indexed: 12/27/2022] Open
Abstract
The circadian clock is required for the rhythmic expression of a plethora of genes that orchestrate metabolism, sleep-wake behaviour and the immune response to pathogens. The cold-inducible RNA binding protein (CIRBP) is required for high amplitude expression of clock genes. Moreover, CIRBP protects the expression of clock genes from the inhibitory effects of tumour necrosis factor (TNF). However, since TNF represses Cirbp expression, the protective effect of CIRBP is lost. Here, we show that the TNF effect on Cirbp requires the non-canonical NF-κB signalling pathway. While a knock down of RelA does not alter the effects of TNF on Cirbp, a knock down of RelB represses this effect. In addition, the data indicate that p50 and p52 are required in the TNF induced inhibition of Cirbp. These results show that Cirbp expression in TNF treated cells is regulated via the non-canonical NF-κB pathway.
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Affiliation(s)
- Martin A Lopez
- Institute of Experimental Immunology, University of Zurich, 8057 Zurich, Switzerland
| | - Daniel Meier
- Institute of Experimental Immunology, University of Zurich, 8057 Zurich, Switzerland
| | - W Wei-Lynn Wong
- Institute of Experimental Immunology, University of Zurich, 8057 Zurich, Switzerland
| | - Adriano Fontana
- Institute of Experimental Immunology, University of Zurich, 8057 Zurich, Switzerland
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19
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Udoh US, Valcin JA, Gamble KL, Bailey SM. The Molecular Circadian Clock and Alcohol-Induced Liver Injury. Biomolecules 2015; 5:2504-37. [PMID: 26473939 PMCID: PMC4693245 DOI: 10.3390/biom5042504] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/02/2015] [Accepted: 09/09/2015] [Indexed: 12/11/2022] Open
Abstract
Emerging evidence from both experimental animal studies and clinical human investigations demonstrates strong connections among circadian processes, alcohol use, and alcohol-induced tissue injury. Components of the circadian clock have been shown to influence the pathophysiological effects of alcohol. Conversely, alcohol may alter the expression of circadian clock genes and the rhythmic behavioral and metabolic processes they regulate. Therefore, we propose that alcohol-mediated disruption in circadian rhythms likely underpins many adverse health effects of alcohol that cut across multiple organ systems. In this review, we provide an overview of the circadian clock mechanism and showcase results from new studies in the alcohol field implicating the circadian clock as a key target of alcohol action and toxicity in the liver. We discuss various molecular events through which alcohol may work to negatively impact circadian clock-mediated processes in the liver, and contribute to tissue pathology. Illuminating the mechanistic connections between the circadian clock and alcohol will be critical to the development of new preventative and pharmacological treatments for alcohol use disorders and alcohol-mediated organ diseases.
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Affiliation(s)
- Uduak S Udoh
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL 35233, USA.
| | - Jennifer A Valcin
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL 35233, USA.
| | - Karen L Gamble
- Department of Psychiatry, Division of Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA.
| | - Shannon M Bailey
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL 35233, USA.
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20
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Twist1 Is a TNF-Inducible Inhibitor of Clock Mediated Activation of Period Genes. PLoS One 2015; 10:e0137229. [PMID: 26361389 PMCID: PMC4567340 DOI: 10.1371/journal.pone.0137229] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 08/14/2015] [Indexed: 12/14/2022] Open
Abstract
Background Activation of the immune system affects the circadian clock. Tumor necrosis factor (TNF) and Interleukin (IL)-1β inhibit the expression of clock genes including Period (Per) genes and the PAR-bZip clock-controlled gene D-site albumin promoter-binding protein (Dbp). These effects are due to cytokine-induced interference of E-box mediated transcription of clock genes. In the present study we have assessed the two E-box binding transcriptional regulators Twist1 and Twist2 for their role in cytokine induced inhibition of clock genes. Methods The expression of the clock genes Per1, Per2, Per3 and of Dbp was assessed in NIH-3T3 mouse fibroblasts and the mouse hippocampal neuronal cell line HT22. Cells were treated for 4h with TNF and IL-1β. The functional role of Twist1 and Twist2 was assessed by siRNAs against the Twist genes and by overexpression of TWIST proteins. In luciferase (luc) assays NIH-3T3 cells were transfected with reporter gene constructs, which contain a 3xPer1 E-box or a Dbp E-box. Quantitative chromatin immunoprecipitation (ChIP) was performed using antibodies to TWIST1 and CLOCK, and the E-box consensus sequences of Dbp (CATGTG) and Per1 E-box (CACGTG). Results We report here that siRNA against Twist1 protects NIH-3T3 cells and HT22 cells from down-regulation of Period and Dbp by TNF and IL-1β. Overexpression of Twist1, but not of Twist2, mimics the effect of the cytokines. TNF down-regulates the activation of Per1-3xE-box-luc, the effect being prevented by siRNA against Twist1. Overexpression of Twist1, but not of Twist2, inhibits Per1-3xE-box-luc or Dbp-E-Box-luc activity. ChIP experiments show TWIST1 induction by TNF to compete with CLOCK binding to the E-box of Period genes and Dbp. Conclusion Twist1 plays a pivotal role in the TNF mediated suppression of E-box dependent transactivation of Period genes and Dbp. Thereby Twist1 may provide a link between the immune system and the circadian timing system.
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21
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Bohnen MS, Iyer V, Sampson KJ, Kass RS. Novel mechanism of transient outward potassium channel current regulation in the heart: implications for cardiac electrophysiology in health and disease. Circ Res 2015; 116:1633-5. [PMID: 25953919 DOI: 10.1161/circresaha.115.306438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Michael S Bohnen
- From the Department of Pharmacology (M.S.B., K.J.S., R.S.K.), and Department of Medicine (V.I.), College of Physicians & Surgeons, Columbia University, NY
| | - Vivek Iyer
- From the Department of Pharmacology (M.S.B., K.J.S., R.S.K.), and Department of Medicine (V.I.), College of Physicians & Surgeons, Columbia University, NY
| | - Kevin J Sampson
- From the Department of Pharmacology (M.S.B., K.J.S., R.S.K.), and Department of Medicine (V.I.), College of Physicians & Surgeons, Columbia University, NY
| | - Robert S Kass
- From the Department of Pharmacology (M.S.B., K.J.S., R.S.K.), and Department of Medicine (V.I.), College of Physicians & Surgeons, Columbia University, NY.
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22
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Dumaine JE, Ashley NT. Acute sleep fragmentation induces tissue-specific changes in cytokine gene expression and increases serum corticosterone concentration. Am J Physiol Regul Integr Comp Physiol 2015; 308:R1062-9. [PMID: 25876653 DOI: 10.1152/ajpregu.00049.2015] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/10/2015] [Indexed: 12/13/2022]
Abstract
Sleep deprivation induces acute inflammation and increased glucocorticosteroids in vertebrates, but effects from fragmented, or intermittent, sleep are poorly understood. Considering the latter is more representative of sleep apnea in humans, we investigated changes in proinflammatory (IL-1β, TNF-α) and anti-inflammatory (TGF-β1) cytokine gene expression in the periphery (liver, spleen, fat, and heart) and brain (hypothalamus, prefrontal cortex, and hippocampus) of a murine model exposed to varying intensities of sleep fragmentation (SF). Additionally, serum corticosterone was assessed. Sleep was disrupted in male C57BL/6J mice using an automated sleep fragmentation chamber that moves a sweeping bar at specified intervals (Lafayette Industries). Mice were exposed to bar sweeps every 20 s (high sleep fragmentation, HSF), 120 s (low sleep fragmentation, LSF), or the bar remained stationary (control). Trunk blood and tissue samples were collected after 24 h of SF. We predicted that HSF mice would exhibit increased proinflammatory expression, decreased anti-inflammatory expression, and elevated stress hormones in relation to LSF and controls. SF significantly elevated IL-1β gene expression in adipose tissue, heart (HSF only), and hypothalamus (LSF only) relative to controls. SF did not increase TNF-α expression in any of the tissues measured. HSF increased TGF-β1 expression in the hypothalamus and hippocampus relative to other groups. Serum corticosterone concentration was significantly different among groups, with HSF mice exhibiting the highest, LSF intermediate, and controls with the lowest concentration. This indicates that 24 h of SF is a potent inducer of inflammation and stress hormones in the periphery, but leads to upregulation of anti-inflammatory cytokines in the brain.
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Affiliation(s)
- Jennifer E Dumaine
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
| | - Noah T Ashley
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
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23
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Cline BH, Costa-Nunes JP, Cespuglio R, Markova N, Santos AI, Bukhman YV, Kubatiev A, Steinbusch HWM, Lesch KP, Strekalova T. Dicholine succinate, the neuronal insulin sensitizer, normalizes behavior, REM sleep, hippocampal pGSK3 beta and mRNAs of NMDA receptor subunits in mouse models of depression. Front Behav Neurosci 2015; 9:37. [PMID: 25767439 PMCID: PMC4341562 DOI: 10.3389/fnbeh.2015.00037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 02/01/2015] [Indexed: 11/13/2022] Open
Abstract
Central insulin receptor-mediated signaling is attracting the growing attention of researchers because of rapidly accumulating evidence implicating it in the mechanisms of plasticity, stress response, and neuropsychiatric disorders including depression. Dicholine succinate (DS), a mitochondrial complex II substrate, was shown to enhance insulin-receptor mediated signaling in neurons and is regarded as a sensitizer of the neuronal insulin receptor. Compounds enhancing neuronal insulin receptor-mediated transmission exert an antidepressant-like effect in several pre-clinical paradigms of depression; similarly, such properties for DS were found with a stress-induced anhedonia model. Here, we additionally studied the effects of DS on several variables which were ameliorated by other insulin receptor sensitizers in mice. Pre-treatment with DS of chronically stressed C57BL6 mice rescued normal contextual fear conditioning, hippocampal gene expression of NMDA receptor subunit NR2A, the NR2A/NR2B ratio and increased REM sleep rebound after acute predation. In 18-month-old C57BL6 mice, a model of elderly depression, DS restored normal sucrose preference and activated the expression of neural plasticity factors in the hippocampus as shown by Illumina microarray. Finally, young naïve DS-treated C57BL6 mice had reduced depressive- and anxiety-like behaviors and, similarly to imipramine-treated mice, preserved hippocampal levels of the phosphorylated (inactive) form of GSK3 beta that was lowered by forced swimming in pharmacologically naïve animals. Thus, DS can ameliorate behavioral and molecular outcomes under a variety of stress- and depression-related conditions. This further highlights neuronal insulin signaling as a new factor of pathogenesis and a potential pharmacotherapy of affective pathologies.
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Affiliation(s)
- Brandon H Cline
- Faculté de Médecine, INSERM U1119, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg Strasbourg, France
| | - Joao P Costa-Nunes
- Department of Neuroscience, Maastricht University Maastricht, Netherlands ; Group of Behavioural Neuroscience and Pharmacology, Institute for Hygiene and Tropical Medicine, New University of Lisbon Lisbon, Portugal
| | - Raymond Cespuglio
- Faculty of Medicine, Neuroscience Research Center of Lyon, INSERM U1028, C. Bernard University Lyon, France
| | - Natalyia Markova
- Laboratory of Biomolecular Screening, Institute of Physiologically Active Compounds, Russian Academy of Sciences Moscow, Russia ; Laboratory of Cognitive Dysfunctions, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences Moscow, Russia
| | - Ana I Santos
- Faculdade de Ciências Médicas, NOVA Medical School, Universidade Nova de Lisboa Lisboa, Portugal
| | - Yury V Bukhman
- Great Lakes Bioenergy Research Center, Computational Biology, Wisconsin Energy Institute, University of Wisconsin Madison, WI, USA
| | - Aslan Kubatiev
- Laboratory of Cognitive Dysfunctions, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences Moscow, Russia
| | | | - Klaus-Peter Lesch
- Department of Neuroscience, Maastricht University Maastricht, Netherlands ; Laboratory of Translational Neuroscience, Division of Molecular Psychiatry, Centre of Mental Health, University of Wuerzburg Wuerzburg, Germany
| | - Tatyana Strekalova
- Department of Neuroscience, Maastricht University Maastricht, Netherlands ; Group of Behavioural Neuroscience and Pharmacology, Institute for Hygiene and Tropical Medicine, New University of Lisbon Lisbon, Portugal ; Laboratory of Biomolecular Screening, Institute of Physiologically Active Compounds, Russian Academy of Sciences Moscow, Russia
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24
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Abstract
Brain glial cells, in particular astrocytes and microglia, secrete signaling molecules that regulate glia-glia or glia-neuron communication and synaptic activity. While much is known about roles of glial cells in nervous system development, we are only beginning to understand the physiological functions of such cells in the adult brain. Studies in vertebrate and invertebrate models, in particular mice and Drosophila, have revealed roles of glia-neuron communication in the modulation of complex behavior. This chapter emphasizes recent evidence from studies of rodents and Drosophila that highlight the importance of glial cells and similarities or differences in the neural circuits regulating circadian rhythms and sleep in the two models. The chapter discusses cellular, molecular, and genetic approaches that have been useful in these models for understanding how glia-neuron communication contributes to the regulation of rhythmic behavior.
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Affiliation(s)
- F Rob Jackson
- Department of Neuroscience, Sackler Program in Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA.
| | - Fanny S Ng
- Department of Neuroscience, Sackler Program in Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
| | - Sukanya Sengupta
- Department of Neuroscience, Sackler Program in Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
| | - Samantha You
- Department of Neuroscience, Sackler Program in Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
| | - Yanmei Huang
- Department of Neuroscience, Sackler Program in Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
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