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Miao N, Cao D, Jin J, Ma G, Yu H, Qu J, Li G, Gao C, Dong D, Xia F, Li W. Tumor cell-intrinsic Piezo2 drives radioresistance by impairing CD8+ T cell stemness maintenance. J Exp Med 2024; 221:e20231486. [PMID: 39167075 PMCID: PMC11338319 DOI: 10.1084/jem.20231486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 05/20/2024] [Accepted: 07/24/2024] [Indexed: 08/23/2024] Open
Abstract
Changes in mechanosensitive ion channels following radiation have seldom been linked to therapeutic sensitivity or specific factors involved in antitumor immunity. Here, in this study, we found that the mechanical force sensor, Piezo2, was significantly upregulated in tumor cells after radiation, and Piezo2 knockout in tumor cells enhanced tumor growth suppression by radiotherapy. Specifically, loss of Piezo2 in tumor cells induced their IL-15 expression via unleashing JAK2/STAT1/IRF-1 axis after radiation. This increase in IL-15 activates IL-15Rα on tumor-infiltrating CD8+ T cells, thereby leading to their augmented effector and stem cell-like properties, along with reduced terminal exhausted feature. Importantly, Piezo2 expression was negatively correlated with CD8 infiltration, as well as with radiosensitivity of patients with rectum adenocarcinoma receiving radiotherapy treatment. Together, our findings reveal that tumor cell-intrinsic Piezo2 induces radioresistance by dampening the IRF-1/IL-15 axis, thus leading to impaired CD8+ T cell-dependent antitumor responses, providing insights into the further development of combination strategies to treat radioresistant cancers.
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Affiliation(s)
- Naijun Miao
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, China
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dongqing Cao
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingsi Jin
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guizhi Ma
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, China
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haihui Yu
- School of Basic Medical Sciences, Shanghai Jiao Tong University School of Medicine , Shanghai, China
| | - Junwen Qu
- Department of Urology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guiping Li
- Core Facility of Basic Medical Sciences, Shanghai Jiao Tong University School of Medicine , Shanghai, China
| | - Caixia Gao
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, China
| | - Dong Dong
- Department of Thoracic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fan Xia
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Wenwen Li
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, China
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Ding H, Jiang M, Chan AM, Xia Y, Ma RCW, Yao X, Wang L, Huang Y. Targeting the tyrosine kinase Src in endothelium attenuates inflammation and atherogenesis induced by disturbed flow. Br J Pharmacol 2024. [PMID: 39117589 DOI: 10.1111/bph.17307] [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: 01/14/2024] [Revised: 05/22/2024] [Accepted: 07/10/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND AND PURPOSE Previous studies have shown that Src can regulate inflammation and tumour progression. However, the mechanisms by which Src regulates the inflammatory response of vascular endothelium and atherogenesis are currently poorly understood. This study aimed to investigate the role of Src in endothelial inflammation and atherogenesis, as well as the underlying mechanisms. EXPERIMENTAL APPROACH Real-time quantitative PCR was used to measure the mRNA levels of inflammatory genes. The phosphorylation and localization of proteins were examined using western blotting and immunofluorescence, respectively. The level of p-Src Y416 in mouse endothelium was directly determined using en face staining. Endothelial-specific knockdown of Src was achieved by tail vein injection of AAV-sgSrc in ApoE-/-; Cas9LSL/LSL; Cdh5-cre mice. Atherosclerosis was induced by partial ligation of the carotid artery. KEY RESULTS Oscillatory shear stress (OSS) promotes the phosphorylation of Src at Y416 in endothelial cells, and Piezo1 is required for this regulatory process. Overexpression of constitutively active Src promotes endothelial inflammation, as well as phosphorylation of Stat3 (at Y705) and its nuclear translocation. Endothelial inflammation induced by OSS was abolished by the Src inhibitor dasatinib or si-Src. Dasatinib, when administered orally, reduced endothelial inflammation and plaque formation in ApoE-/- mice induced by partial carotid artery ligation. Additionally, plaque formation was decreased in the ligated left carotid artery of mice with endothelial-specific Src knockdown. CONCLUSION AND IMPLICATIONS Disturbed flow promotes endothelial inflammation and atherogenesis through the Piezo1-Src-Stat3 pathway. Therefore, inhibiting Src in endothelial cells could be a promising therapeutic strategy to treat atherogenesis.
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Affiliation(s)
- Huanyu Ding
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Minchun Jiang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Andrew M Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Yin Xia
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Ronald C W Ma
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Xiaoqiang Yao
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Li Wang
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China
| | - Yu Huang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China
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Peng H, Lin X, Wang Y, Chen J, Zhao Q, Chen S, Cheng Q, Chen C, Sang T, Zhou H, Xiao J, Wang W, Fang L, Wang X. Epigallocatechin gallate suppresses mitotic clonal expansion and adipogenic differentiation of preadipocytes through impeding JAK2/STAT3-mediated transcriptional cascades. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 129:155563. [PMID: 38552377 DOI: 10.1016/j.phymed.2024.155563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 02/03/2024] [Accepted: 03/21/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Mitotic clonal expansion (MCE) is a prerequisite for preadipocyte differentiation and adipogenesis. Epigallocatechin gallate (EGCG) has been shown to inhibit preadipocyte differentiation. However, the exact molecular mechanisms are still elusive. PURPOSE This study investigated whether EGCG could inhibit adipogenesis and lipid accumulation by regulating the cell cycle in the MCE phase of adipogenesis and its underlying molecular mechanisms. METHOD 3T3-L1 preadipocytes were induced to differentiate by a differentiation cocktail (DMI) and were treated with EGCG (25-100 μM) for 9, 18, and 24 h to examine the effect on MCE, or eight days to examine the effect on terminal differentiation. C57BL/6 mice were fed a high-fat diet (HFD) for three months to induce obesity and were given EGCG (50 or 100 mg/kg) daily by gavage. RESULTS We showed that EGCG significantly inhibited terminal adipogenesis and lipid accumulation in 3T3-L1 cells and decreased expressions of PPARγ, C/EBPα, and FASN. Notably, at the MCE phase, EGCG regulated the cell cycle in sequential order, induced G0/G1 arrest at 18 h, and inhibited the G2/M phase at 24 h upon DMI treatment. Meanwhile, EGCG regulated the expressions of cell cycle regulators (cyclin D1, cyclin E1, CDK4, CDK6, cyclin B1, cyclin B2, p16, and p27), and decreased C/EBPβ, PPARγ, and C/EBPα expressions at MCE. Mechanistic studies using STAT3 agonist Colivelin and antagonist C188-9 revealed that EGCG-induced cell cycle arrest in the MCE phase and terminal adipocyte differentiation was mediated by the inhibition of JAK2/STAT3 signaling cascades and STAT3 (Tyr705) nuclear translocation. Furthermore, EGCG significantly protected mice from HFD-induced obesity, reduced body weight and lipid accumulations in adipose tissues, reduced hyperlipidemia and leptin levels, and improved glucose intolerance and insulin sensitivity. Moreover, RNA sequencing (RNA-seq) analysis showed that the cell cycle changes in epididymal white adipose tissue (eWAT) were significantly enriched upon EGCG treatment. We further verified that EGCG treatment significantly reduced expressions of adipogenic factors, cell cycle regulators, and p-STAT3 in eWAT. CONCLUSION EGCG inhibits MCE, resulting in the inhibition of early and terminal adipocyte differentiation and lipid accumulation, which were mediated by inhibiting p-STAT3 nucleus translocation and activation.
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Affiliation(s)
- He Peng
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Xiaojian Lin
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Ying Wang
- College of Food and Health, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Jiajun Chen
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Qian Zhao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Shengjia Chen
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Qi Cheng
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Chaojie Chen
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Tingting Sang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Hongyu Zhou
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Jun Xiao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Wen Wang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Liu Fang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China
| | - Xingya Wang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 260 Baichuan Road, Hangzhou 311400, PR China.
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Gu H, Pan Y, Xiao H, Zhao L, Tang Y, Ge W. Knockdown of LAP2α inhibits adipogenesis of human adipose-derived stem cells and ameliorates high-fat diet-induced obesity. FASEB J 2024; 38:e23664. [PMID: 38775797 DOI: 10.1096/fj.202302435rr] [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: 11/27/2023] [Revised: 04/17/2024] [Accepted: 04/29/2024] [Indexed: 05/30/2024]
Abstract
Adipogenesis, a pivotal cellular process involving the differentiation of mesenchymal stem cells (MSCs) to mature adipocytes, plays a significant role in various physiological functions. Dysregulation of adipogenesis is implicated in conditions such as obesity. However, the complete molecular understanding of adipogenesis remains elusive. This study aimed to uncover the novel role of lamina-associated polypeptide 2 alpha (LAP2α) in human adipose-derived stem cells (hASCs) adipogenesis and its impact on high-fat diet (HFD)-induced obesity and associated metabolic disturbances. LAP2α expression was assessed during the adipogenic differentiation of hASCs using RT-qPCR and western blotting. The functional role of LAP2α in adipogenesis was explored both in vitro and in vivo through loss- and gain-of-function studies. Moreover, mice with HFD-induced obesity received lentivirus injection to assess the effect of LAP2α knockdown on fat accumulation. Molecular mechanisms underlying LAP2α in adipogenic differentiation were investigated using RT-qPCR, Western blotting, immunofluorescence staining, and Oil Red O staining. LAP2α expression was upregulated during hASCs adipogenic differentiation. LAP2α knockdown hindered adipogenesis, while LAP2α overexpression promoted adipogenic differentiation. Notably, LAP2α deficiency resisted HFD-induced obesity, improved glucose intolerance, mitigated insulin resistance, and prevented fatty liver development. Mechanistically, LAP2α knockdown attenuated signal transducer and activator of transcription 3 (STAT3) activation by reducing the protein level of phosphorylated STAT3. A STAT3 activator (Colivelin) counteracted the negative impact of LAP2α deficiency on hASCs adipogenic differentiation. Taken together, our current study established LAP2α as a crucial regulator of hASCs adipogenic differentiation, unveiling a new therapeutic target for obesity prevention.
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Affiliation(s)
- Hang Gu
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Yuan Pan
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Han Xiao
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Lijun Zhao
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Yiman Tang
- Fourth Clinical Division, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Wenshu Ge
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
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Ma T, Ren R, Lv J, Yang R, Zheng X, Hu Y, Zhu G, Wang H. Transdifferentiation of fibroblasts into muscle cells to constitute cultured meat with tunable intramuscular fat deposition. eLife 2024; 13:RP93220. [PMID: 38771186 PMCID: PMC11108645 DOI: 10.7554/elife.93220] [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] [Indexed: 05/22/2024] Open
Abstract
Current studies on cultured meat mainly focus on the muscle tissue reconstruction in vitro, but lack the formation of intramuscular fat, which is a crucial factor in determining taste, texture, and nutritional contents. Therefore, incorporating fat into cultured meat is of superior value. In this study, we employed the myogenic/lipogenic transdifferentiation of chicken fibroblasts in 3D to produce muscle mass and deposit fat into the same cells without the co-culture or mixture of different cells or fat substances. The immortalized chicken embryonic fibroblasts were implanted into the hydrogel scaffold, and the cell proliferation and myogenic transdifferentiation were conducted in 3D to produce the whole-cut meat mimics. Compared to 2D, cells grown in 3D matrix showed elevated myogenesis and collagen production. We further induced fat deposition in the transdifferentiated muscle cells and the triglyceride content could be manipulated to match and exceed the levels of chicken meat. The gene expression analysis indicated that both lineage-specific and multifunctional signalings could contribute to the generation of muscle/fat matrix. Overall, we were able to precisely modulate muscle, fat, and extracellular matrix contents according to balanced or specialized meat preferences. These findings provide new avenues for customized cultured meat production with desired intramuscular fat contents that can be tailored to meet the diverse demands of consumers.
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Affiliation(s)
- Tongtong Ma
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
| | - Ruimin Ren
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
- College of Animal Science and Technology, Huazhong Agricultural UniversityWuhanChina
| | - Jianqi Lv
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
| | - Ruipeng Yang
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
| | - Xinyi Zheng
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
| | - Yang Hu
- College of Food Science and Technology, Huazhong Agricultural UniversityWuhanChina
| | - Guiyu Zhu
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
| | - Heng Wang
- College of Animal Science and Technology, Key Laboratory of Efficient Utilization of Non-Grain Feed Resources, Ministry of Agriculture and Rural Affairs, Shandong Agricultural UniversityTaianChina
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Shi J, Li Z, Jia L, Ma Y, Huang Y, He P, Ran T, Liu W, Zhang W, Cheng Q, Zhang Z, Lei Z. Castration alters the ileum microbiota of Holstein bulls and promotes beef flavor compounds. BMC Genomics 2024; 25:426. [PMID: 38684965 PMCID: PMC11059720 DOI: 10.1186/s12864-024-10272-8] [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: 12/12/2023] [Accepted: 03/30/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND In the beef industry, bull calves are usually castrated to improve flavor and meat quality; however, this can reduce their growth and slaughter performance. The gut microbiota is known to exert a significant influence on growth and slaughter performance. However, there is a paucity of research investigating the impact of castration on gut microbiota composition and its subsequent effects on slaughter performance and meat flavor. RESULT The objective of this study was to examine the processes via which castration hinders slaughter productivity and enhances meat quality. Bull and castrated calves were maintained under the same management conditions, and at slaughter, meat quality was assessed, and ileum and epithelial tissue samples were obtained. The research employed metagenomic sequencing and non-targeted metabolomics techniques to investigate the makeup of the microbiota and identify differential metabolites. The findings of this study revealed the Carcass weight and eye muscle area /carcass weight in the bull group were significantly higher than those in the steer group. There were no significant differences in the length, width, and crypt depth of the ileum villi between the two groups. A total of 53 flavor compounds were identified in the two groups of beef, of which 16 were significantly higher in the steer group than in the bull group, and 5 were significantly higher in the bull group than in the steer group. In addition, bacteria, Eukaryota, and virus species were significantly separated between the two groups. The lipid metabolism pathways of α-linolenic acid, linoleic acid, and unsaturated fatty acids were significantly enriched in the Steers group. Compared with the steer group, the organic system pathway is significantly enriched in the bull group. The study also found that five metabolites (LPC (0:0/20:3), LPC (20:3/0:0), LPE (0:0/22:5), LPE (22:5/0:0), D-Mannosamine), and three species (s_Cloning_vector_Hsp70_LexA-HP1, s_Bacteroides_Coprophilus_CAG: 333, and s_Clostridium_nexile-CAG: 348) interfere with each other and collectively have a positive impact on the flavor compounds of beef. CONCLUSIONS These findings provide a basic understanding that under the same management conditions, castration does indeed reduce the slaughter performance of bulls and improve the flavor of beef. Microorganisms and metabolites contribute to these changes through interactions.
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Affiliation(s)
- Jinping Shi
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Zemin Li
- College of Animal Sciences and Technology, Shandong Agricultural University, Taian, 271018, China
| | - Li Jia
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yue Ma
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yongliang Huang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Pengjia He
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Tao Ran
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Wangjing Liu
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Wangdong Zhang
- College of Animal Medicine, Gansu Agricultural University, Lanzhou, 730070, China
| | - Qiang Cheng
- Gansu Xukang Food Co., Ltd, Pingliang, 744300, China
| | - Zhao Zhang
- Gansu Huarui Agriculture Co., Ltd, Zhangye, 734500, China
| | - Zhaomin Lei
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China.
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Zhang X, Zhang W, Zhao L, Zheng L, Wang B, Song C, Liu S. Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish ( Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism. Animals (Basel) 2024; 14:561. [PMID: 38396529 PMCID: PMC10886137 DOI: 10.3390/ani14040561] [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: 01/15/2024] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Cadmium (Cd) pollution has become a global issue due to industrial and agricultural developments. However, the molecular mechanism of Cd-induced detrimental effects and relevant signal transduction/metabolic networks are largely unknown in marine fishes. Here, greenfin horse-faced filefish (Thamnaconus septentrionalis) were exposed to 5.0 mg/L Cd up to 7 days. We applied both biochemical methods and multi-omics techniques to investigate how the gills respond to Cd exposure. Our findings revealed that Cd exposure caused the formation of reactive oxygen species (ROS), which in turn activated the MAPK and apoptotic pathways to alleviate oxidative stress and cell damage. Glycolysis, protein degradation, as well as fatty acid metabolism might assist to meet the requirements of nutrition and energy under Cd stress. We also found that long-term (7 days, "long-term" means compared to 12 and 48 h) Cd exposure caused the accumulation of succinate, which would in turn trigger an inflammatory response and start an immunological process. Moreover, ferroptosis might induce inflammation. Overall, Cd exposure caused oxidative stress, energy metabolism disturbance, and immune response in greenfin horse-faced filefish. Our conclusions can be used as references for safety risk assessment of Cd to marine economic fishes.
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Affiliation(s)
- Xuanxuan Zhang
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China; (X.Z.); (L.Z.); (B.W.)
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
| | - Wenquan Zhang
- National Deep Sea Center, Ministry of Natural Resources, Qingdao 266061, China;
| | - Linlin Zhao
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
| | - Li Zheng
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China; (X.Z.); (L.Z.); (B.W.)
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
| | - Bingshu Wang
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China; (X.Z.); (L.Z.); (B.W.)
| | - Chengbing Song
- National Deep Sea Center, Ministry of Natural Resources, Qingdao 266061, China;
| | - Shenghao Liu
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
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Di Muzio C, Di Cola I, Shariat Panahi A, Ursini F, Iagnocco A, Giacomelli R, Cipriani P, Ruscitti P. The effects of suppressing inflammation by tofacitinib may simultaneously improve glycaemic parameters and inflammatory markers in rheumatoid arthritis patients with comorbid type 2 diabetes: a proof-of-concept, open, prospective, clinical study. Arthritis Res Ther 2024; 26:14. [PMID: 38178250 PMCID: PMC10765862 DOI: 10.1186/s13075-023-03249-7] [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: 11/04/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND A consistent connection has been increasingly reported between rheumatoid arthritis (RA), insulin resistance (IR), and type 2 diabetes (T2D). The β-cell apoptosis induced by pro-inflammatory cytokines, which could be exaggerated in the context of RA, is associated with increased expression pro-apoptotic proteins, which is dependent on JAnus Kinase/Signal Transducer and Activator of Transcription (JAK/STAT) activation. On these bases, we aimed to evaluate if the administration of tofacitinib, a potent and selective JAK inhibitor, could simultaneously improve glycaemic parameters and inflammatory markers in patients with RA and comorbid T2D. METHODS The primary endpoint was the change in the 1998-updated homeostatic model assessment of IR (HOMA2-IR) after 6 months of treatment with tofacitinib in RA patients with T2D. Consecutive RA patients with T2D diagnosis were included in this proof-of-concept, open, prospective, clinical study, which was planned before the recent emergence of safety signals about tofacitinib. Additional endpoints were also assessed regarding RA disease activity and metabolic parameters. RESULTS Forty consecutive RA patients with T2D were included (female sex 68.9%, mean age of 63.4 ± 9.9 years). During 6-month follow-up, a progressive reduction of HOMA2-IR was observed in RA patients with T2D treated with tofacitinib. Specifically, a significant effect of tofacitinib was shown on the overall reduction of HOMA2-IR (β = - 1.1, p = 0.019, 95%CI - 1.5 to - 0.76). Also, HOMA2-β enhanced in these patients highlighting an improvement of insulin sensitivity. Furthermore, although a longer follow-up is required, a trend in glycated haemoglobin reduction was also recorded. The administration of tofacitinib induced an improvement in RA disease activity, and a significant reduction of DAS28-CRP and SDAI was observed; 76.8% of patients achieved a good clinical response. In this study, no major adverse events (AEs) were retrieved without the identification of new safety signals. Specifically, no life-threatening AEs and cardiovascular and/or thromboembolic events were recorded. CONCLUSIONS The administration of tofacitinib in RA with T2D led to a simultaneous improvement of IR and inflammatory disease activity, inducing a "bidirectional" benefit in these patients. However, further specific designed and powered studies are warranted to entirely evaluate the metabolic effects of tofacitinib in RA patients with T2D.
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Affiliation(s)
- Claudia Di Muzio
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Delta 6 Building, PO box 67100, L'Aquila, Italy
| | - Ilenia Di Cola
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Delta 6 Building, PO box 67100, L'Aquila, Italy
| | - Azadeh Shariat Panahi
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Delta 6 Building, PO box 67100, L'Aquila, Italy
| | - Francesco Ursini
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Annamaria Iagnocco
- Academic Rheumatology Centre, Dipartimento di Scienze Cliniche e Biologiche Università di Torino - AO Mauriziano di Torino, Turin, Italy
| | - Roberto Giacomelli
- Clinical and Research Section of Rheumatology and Clinical Immunology, Fondazione Policlinico Campus Bio-Medico, Via Álvaro del Portillo 200, 00128, Rome, Italy
- Rheumatology and Clinical Immunology, Department of Medicine, University of Rome "Campus Biomedico", School of Medicine, Rome, Italy
| | - Paola Cipriani
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Delta 6 Building, PO box 67100, L'Aquila, Italy
| | - Piero Ruscitti
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Delta 6 Building, PO box 67100, L'Aquila, Italy.
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9
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Macrì F, Vigorito I, Castiglione S, Faggiano S, Casaburo M, Fanotti N, Piacentini L, Vigetti D, Vinci MC, Raucci A. High Phosphate-Induced JAK-STAT Signalling Sustains Vascular Smooth Muscle Cell Inflammation and Limits Calcification. Biomolecules 2023; 14:29. [PMID: 38254629 PMCID: PMC10813375 DOI: 10.3390/biom14010029] [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: 06/24/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
Vascular calcification (VC) is an age-related complication characterised by calcium-phosphate deposition in the arterial wall driven by the osteogenic transformation of vascular smooth muscle cells (VSMCs). The JAK-STAT pathway is an emerging target in inflammation. Considering the relationship between VC and inflammation, we investigated the role of JAK-STAT signalling during VSMC calcification. Human aortic smooth muscle cells (HASMCs) were cultured in high-inorganic phosphate (Pi) medium for up to 7 days; calcium deposition was determined via Alizarin staining and colorimetric assay. Inflammatory factor secretion was evaluated via ELISA and JAK-STAT members' activation using Western blot or immunohistochemistry on HASMCs or calcified aortas of Vitamin D-treated C57BL6/J mice, respectively. The JAK-STAT pathway was blocked by JAK Inhibitor I and Von Kossa staining was used for calcium deposits in murine aortic rings. During Pi-induced calcification, HASMCs released IL-6, IL-8, and MCP-1 and activated JAK1-JAK3 proteins and STAT1. Phospho-STAT1 was detected in murine calcified aortas. Blocking of the JAK-STAT cascade reduced HASMC proliferation and pro-inflammatory factor expression and release while increasing calcium deposition and osteogenic transcription factor RUNX2 expression. Consistently, JAK-STAT pathway inhibition exacerbates mouse aortic ring calcification ex vivo. Intriguingly, our results suggest an alternative link between VSMC inflammation and VC.
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Affiliation(s)
- Federica Macrì
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (F.M.); (I.V.); (S.C.); (S.F.)
| | - Ilaria Vigorito
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (F.M.); (I.V.); (S.C.); (S.F.)
| | - Stefania Castiglione
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (F.M.); (I.V.); (S.C.); (S.F.)
| | - Stefano Faggiano
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (F.M.); (I.V.); (S.C.); (S.F.)
| | - Manuel Casaburo
- Animal Facility, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (M.C.); (N.F.)
| | - Nadia Fanotti
- Animal Facility, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (M.C.); (N.F.)
| | - Luca Piacentini
- Bioinformatics and Artificial Intelligence Facility, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy;
| | - Davide Vigetti
- Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy;
| | - Maria Cristina Vinci
- Vascular Biology and Regenerative Medicine Unit, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy;
| | - Angela Raucci
- Unit of Experimental Cardio-Oncology and Cardiovascular Aging, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (F.M.); (I.V.); (S.C.); (S.F.)
- Animal Facility, Centro Cardiologico Monzino-IRCCS, 20138 Milan, Italy; (M.C.); (N.F.)
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10
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Xu D, Wan B, Qiu K, Wang Y, Zhang X, Jiao N, Yan E, Wu J, Yu R, Gao S, Du M, Liu C, Li M, Fan G, Yin J. Single-Cell RNA-Sequencing Provides Insight into Skeletal Muscle Evolution during the Selection of Muscle Characteristics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2305080. [PMID: 37870215 PMCID: PMC10724408 DOI: 10.1002/advs.202305080] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/27/2023] [Indexed: 10/24/2023]
Abstract
Skeletal muscle comprises a large, heterogeneous assortment of cell populations that interact to maintain muscle homeostasis, but little is known about the mechanism that controls myogenic development in response to artificial selection. Different pig (Sus scrofa) breeds exhibit distinct muscle phenotypes resulting from domestication and selective breeding. Using unbiased single-cell transcriptomic sequencing analysis (scRNA-seq), the impact of artificial selection on cell profiles is investigated in neonatal skeletal muscle of pigs. This work provides panoramic muscle-resident cell profiles and identifies novel and breed-specific cells, mapping them on pseudotime trajectories. Artificial selection has elicited significant changes in muscle-resident cell profiles, while conserving signs of generational environmental challenges. These results suggest that fibro-adipogenic progenitors serve as a cellular interaction hub and that specific transcription factors identified here may serve as candidate target regulons for the pursuit of a specific muscle phenotype. Furthermore, a cross-species comparison of humans, mice, and pigs illustrates the conservation and divergence of mammalian muscle ontology. The findings of this study reveal shifts in cellular heterogeneity, novel cell subpopulations, and their interactions that may greatly facilitate the understanding of the mechanism underlying divergent muscle phenotypes arising from artificial selection.
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Affiliation(s)
- Doudou Xu
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Boyang Wan
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Kai Qiu
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Yubo Wang
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Xin Zhang
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
- Molecular Design Breeding Frontier Science Center of the Ministry of EducationBeijingChina
| | - Ning Jiao
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Enfa Yan
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Jiangwei Wu
- Key Laboratory of Animal GeneticsBreeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYangling712100China
| | - Run Yu
- Beijing National Day SchoolBeijing100039China
| | - Shuai Gao
- Key Laboratory of Animal GeneticsCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
| | - Min Du
- Nutrigenomics and Growth Biology LaboratoryDepartment of Animal Sciences and School of Molecular BioscienceWashington State UniversityPullmanWA99164USA
| | | | - Mingzhou Li
- Institute of Animal Genetics and BreedingCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu625014China
| | - Guoping Fan
- Department of Human GeneticsDavid Geffen School of MedicineUniversity of California Los AngelesLos AngelesCA90095USA
| | - Jingdong Yin
- State Key Laboratory of Animal Nutrition and feedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing100193China
- Molecular Design Breeding Frontier Science Center of the Ministry of EducationBeijingChina
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11
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Remark LH, Leclerc K, Ramsukh M, Lin Z, Lee S, Dharmalingam B, Gillinov L, Nayak VV, El Parente P, Sambon M, Atria PJ, Ali MAE, Witek L, Castillo AB, Park CY, Adams RH, Tsirigos A, Morgani SM, Leucht P. Loss of Notch signaling in skeletal stem cells enhances bone formation with aging. Bone Res 2023; 11:50. [PMID: 37752132 PMCID: PMC10522593 DOI: 10.1038/s41413-023-00283-8] [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: 01/04/2023] [Revised: 07/06/2023] [Accepted: 07/19/2023] [Indexed: 09/28/2023] Open
Abstract
Skeletal stem and progenitor cells (SSPCs) perform bone maintenance and repair. With age, they produce fewer osteoblasts and more adipocytes leading to a loss of skeletal integrity. The molecular mechanisms that underlie this detrimental transformation are largely unknown. Single-cell RNA sequencing revealed that Notch signaling becomes elevated in SSPCs during aging. To examine the role of increased Notch activity, we deleted Nicastrin, an essential Notch pathway component, in SSPCs in vivo. Middle-aged conditional knockout mice displayed elevated SSPC osteo-lineage gene expression, increased trabecular bone mass, reduced bone marrow adiposity, and enhanced bone repair. Thus, Notch regulates SSPC cell fate decisions, and moderating Notch signaling ameliorates the skeletal aging phenotype, increasing bone mass even beyond that of young mice. Finally, we identified the transcription factor Ebf3 as a downstream mediator of Notch signaling in SSPCs that is dysregulated with aging, highlighting it as a promising therapeutic target to rejuvenate the aged skeleton.
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Affiliation(s)
- Lindsey H Remark
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Kevin Leclerc
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Malissa Ramsukh
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Ziyan Lin
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY, USA
| | - Sooyeon Lee
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
- Institute of Comparative Molecular Endocrinology, Ulm University, Ulm, Germany
| | - Backialakshmi Dharmalingam
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, D-48149, Münster, Germany
| | - Lauren Gillinov
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Vasudev V Nayak
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Paulo El Parente
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Margaux Sambon
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Pablo J Atria
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Mohamed A E Ali
- Department of Pathology, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Lukasz Witek
- Biomaterials Division, New York University College of Dentistry, New York, NY, USA
- Hansjörg Wyss Department of Plastic Surgery, NYU Grossman School of Medicine, New York University, New York, NY, USA
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, Brooklyn, NY, USA
| | - Alesha B Castillo
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Christopher Y Park
- Department of Pathology, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Ralf H Adams
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, D-48149, Münster, Germany
| | - Aristotelis Tsirigos
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY, USA
| | - Sophie M Morgani
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Philipp Leucht
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA.
- Department of Cell Biology, NYU Robert I. Grossman School of Medicine, New York, NY, USA.
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12
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Di Muzio C, Ursini F, Iagnocco A, Cipriani P, Giacomelli R, Ruscitti P. Tofacitinib may improve insulin resistance in patients with rheumatoid arthritis and diabetes, implications for disease management and precision medicine approach. Autoimmun Rev 2023:103373. [PMID: 37301274 DOI: 10.1016/j.autrev.2023.103373] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/27/2023] [Accepted: 06/04/2023] [Indexed: 06/12/2023]
Affiliation(s)
- Claudia Di Muzio
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Francesco Ursini
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Annamaria Iagnocco
- Academic Rheumatology Centre, Ospedale Mauriziano - Dipartimento Scienze Cliniche e Biologiche, Università degli Studi di Torino, Turin, Italy
| | - Paola Cipriani
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Roberto Giacomelli
- Clinical and Research Section of Rheumatology and Clinical Immunology, Fondazione Policlinico Campus Bio-Medico, Via Álvaro del Portillo 200, 00128 Rome, Italy; Rheumatology and Clinical Immunology, Department of Medicine, University of Rome "Campus Biomedico", School of Medicine, Rome, Italy
| | - Piero Ruscitti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy.
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13
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Chen Y, Wang W, Morgan MP, Robson T, Annett S. Obesity, non-alcoholic fatty liver disease and hepatocellular carcinoma: current status and therapeutic targets. Front Endocrinol (Lausanne) 2023; 14:1148934. [PMID: 37361533 PMCID: PMC10286797 DOI: 10.3389/fendo.2023.1148934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/16/2023] [Indexed: 06/28/2023] Open
Abstract
Obesity is a global epidemic and overwhelming evidence indicates that it is a risk factor for numerous cancers, including hepatocellular carcinoma (HCC), the third leading cause of cancer-related deaths worldwide. Obesity-associated hepatic tumorigenesis develops from nonalcoholic fatty liver disease (NAFLD), progressing to nonalcoholic steatohepatitis (NASH), cirrhosis and ultimately to HCC. The rising incidence of obesity is resulting in an increased prevalence of NAFLD and NASH, and subsequently HCC. Obesity represents an increasingly important underlying etiology of HCC, in particular as the other leading causes of HCC such as hepatitis infection, are declining due to effective treatments and vaccines. In this review, we provide a comprehensive overview of the molecular mechanisms and cellular signaling pathways involved in the pathogenesis of obesity-associated HCC. We summarize the preclinical experimental animal models available to study the features of NAFLD/NASH/HCC, and the non-invasive methods to diagnose NAFLD, NASH and early-stage HCC. Finally, since HCC is an aggressive tumor with a 5-year survival of less than 20%, we will also discuss novel therapeutic targets for obesity-associated HCC and ongoing clinical trials.
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Affiliation(s)
- Yinshuang Chen
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Weipeng Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Maria P. Morgan
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland
| | - Tracy Robson
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland
| | - Stephanie Annett
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland
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14
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Sun Q, Wang X, Xin X, An Z, Hu Y, Feng Q. Qushi Huayu decoction attenuated hepatic lipid accumulation via JAK2/STAT3/CPT-1A-related fatty acid β-oxidation in mice with non-alcoholic steatohepatitis. PHARMACEUTICAL BIOLOGY 2022; 60:2124-2133. [PMID: 36308318 PMCID: PMC9629123 DOI: 10.1080/13880209.2022.2134898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 08/31/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
CONTEXT Qushi Huayu decoction (QHD) has been clinically used for treating non-alcoholic steatohepatits (NASH). However, little is known about the effect of QHD on fatty acid β-oxidation (FAO)-dependent lipid consumption. OBJECTIVE To investigate the mechanism of QHD on FAO-related hepatic lipid accumulation. MATERIALS AND METHODS Male C57BL/6J mice were randomly divided into 5 groups (n = 8): normal diet and drinking water (CON), high-fat and high-carbohydrate diet (HFHC), QHD-L (2.875 g/kg), QHD-H (11.5 g/kg) and obeticholic acid (OCA) (10 mg/kg/day) groups. All mice freely consumed an appropriate diet for 18 weeks, and QHD was orally administered in the last 6 weeks. Measurements of general condition, hepatic histopathology, and JAK2/STAT3 signalling pathway were taken. RESULTS QHD significantly improved NASH in mice, as reflected by improving serum glucolipid metabolism, decreasing enzymes activities, reducing hepatic triglyceride (HFHC: 70.07 ± 2.81 mg/g; QHD-H: 34.06 ± 5.74 mg/g) and ameliorating hepatic steatosis, inflammation in pathology. Further, both the mRNA and protein level of hepatic CPT-1A (p < 0.05), a rate-limiting enzyme of FAO, increased drastically following QHD treatment. Meanwhile, the content of hepatic ATP (p < 0.05) increased significantly after treatment with QHD. Further mechanistic results revealed that both the total protein and nuclear p-STAT3 in the liver were significantly down-regulated after QHD treatment. The protein level of hepatic p-JAK2 was significantly inhibited by QHD (p < 0.05 or p < 0.01). CONCLUSIONS QHD could attenuate lipid accumulation by increasing JAK2/STAT3/CPT-1A-related FAO, which provides a scientific basis for the clinical application of QHD in treating NASH.
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Affiliation(s)
- QinMei Sun
- Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xin Wang
- Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xin Xin
- Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - ZiMing An
- Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - YiYang Hu
- Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai, China
- Key Laboratory of Liver and Kidney Diseases, Shanghai University of Traditional Chinese Medicine, Ministry of Education, Shanghai, China
| | - Qin Feng
- Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai, China
- Key Laboratory of Liver and Kidney Diseases, Shanghai University of Traditional Chinese Medicine, Ministry of Education, Shanghai, China
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15
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Di Muzio C, Cipriani P, Ruscitti P. Rheumatoid Arthritis Treatment Options and Type 2 Diabetes: Unravelling the Association. BioDrugs 2022; 36:673-685. [DOI: 10.1007/s40259-022-00561-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2022] [Indexed: 11/05/2022]
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16
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Abstract
Growth hormone (GH) and insulin-like growth factor 1 (IGF-1) are essential to normal growth, metabolism, and body composition, but in acromegaly, excesses of these hormones strikingly alter them. In recent years, the use of modern methodologies to assess body composition in patients with acromegaly has revealed novel aspects of the acromegaly phenotype. In particular, acromegaly presents a unique pattern of body composition changes in the setting of insulin resistance that we propose herein to be considered an acromegaly-specific lipodystrophy. The lipodystrophy, initiated by a distinctive GH-driven adipose tissue dysregulation, features insulin resistance in the setting of reduced visceral adipose tissue (VAT) mass and intra-hepatic lipid (IHL) but with lipid redistribution, resulting in ectopic lipid deposition in muscle. With recovery of the lipodystrophy, adipose tissue mass, especially that of VAT and IHL, rises, but insulin resistance is lessened. Abnormalities of adipose tissue adipokines may play a role in the disordered adipose tissue metabolism and insulin resistance of the lipodystrophy. The orexigenic hormone ghrelin and peptide Agouti-related peptide may also be affected by active acromegaly as well as variably by acromegaly therapies, which may contribute to the lipodystrophy. Understanding the pathophysiology of the lipodystrophy and how acromegaly therapies differentially reverse its features may be important to optimizing the long-term outcome for patients with this disease. This perspective describes evidence in support of this acromegaly lipodystrophy model and its relevance to acromegaly pathophysiology and the treatment of patients with acromegaly.
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Affiliation(s)
- Pamela U. Freda
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, United States
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17
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Comprehensive Analysis of Differentially Expressed mRNAs, lncRNAs and circRNAs Related to Intramuscular Fat Deposition in Laiwu Pigs. Genes (Basel) 2022; 13:genes13081349. [PMID: 36011260 PMCID: PMC9407282 DOI: 10.3390/genes13081349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) are important classes of small noncoding RNAs that can regulate numerous biological processes. To understand the role of message RNA (mRNAs, lncRNAs and circRNAs) in the regulation of intramuscular fat (IMF) deposition, in this study the expression profiles of longissimus dorsi (LD) muscle from six Laiwu pigs (three with extremely high and three with extremely low IMF content) were sequenced based on rRNA-depleted library construction. In total, 323 differentially expressed protein-coding genes (DEGs), 180 lncRNAs (DELs) and 105 circRNAs (DECs) were detected between the high IMF and low IMF groups. Functional analysis indicated that most DEGs, and some target genes of DELs, were enriched into GO terms and pathways related to adipogenesis, suggesting their important roles in regulating IMF deposition. In addition, 12 DELs were observed to exhibit a positive relationship with stearoyl-CoA desaturase (SCD), phosphoenolpyruvate carboxykinase 1 (PCK1), and adiponectin (ADIPOQ), suggesting they are highly likely to be the target genes of DELs. Finally, we constructed a source gene-circRNA-miRNA connective network, and some of miRNA of the network have been reported to affect lipid metabolism or adipogenesis. Overall, this work provides a valuable resource for further research and helps to understand the potential functions of lncRNAs and circRNAs in IMF deposition.
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18
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Song L, Cao X, Ji W, Zhao L, Yang W, Lu M, Yang J. Inhibition of STAT3 enhances UCP1 expression and mitochondrial function in brown adipocytes. Eur J Pharmacol 2022; 926:175040. [DOI: 10.1016/j.ejphar.2022.175040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 05/04/2022] [Accepted: 05/16/2022] [Indexed: 11/03/2022]
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19
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Ha YS, Kim TK, Park KS, Hwang S, Kim J, Kim SJ. Inhibitory effects of Rocaglamide-A on PPARγ-driven adipogenesis through regulation of mitotic clonal expansion involving the JAK2/STAT3 pathway. Biochim Biophys Acta Mol Cell Biol Lipids 2022; 1867:159148. [PMID: 35248800 DOI: 10.1016/j.bbalip.2022.159148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/20/2022] [Accepted: 02/27/2022] [Indexed: 11/15/2022]
Abstract
Inhibition of adipogenesis is an important strategy for obesity treatment. Rocaglamide-A (Roc-A) is a natural herbal medicine isolated from the genus Aglaia (family Meliaceae), which has a cyclopenta[b]benzofuran core structure. Roc-A exhibits various pharmacological effects against diverse human cancer cells. However, the exact role of Roc-A during adipogenesis in adipocytes has not been studied at all. In this study, we demonstrate that Roc-A is crucial for reducing adipogenesis via downregulating PPARγ transcriptional activity. Consistently, Western-blot and RT-PCR analyses clearly showed that Roc-A inhibits the expression of PPARγ target genes and lipogenic markers in a dose-dependent manner along with suppression of lipid accumulation, in both 3T3-L1 cells and mouse adipose-derived stem cells. Mechanistically, Roc-A significantly decreased JAK2/STAT3 phosphorylation in a dose-dependent manner in 3T3-L1 adipocytes. In particular, we confirmed that Roc-A effectively suppressed the expression of genes involved in cell-cycle regulation, such as cyclin A, B, D1, and E1, early during mitotic clonal expansion in 3T3-L1 adipocytes, and this effect was abolished by the JAK2/STAT3 activator FGF2. Taken together, our results demonstrated that Roc-A reduces adipogenesis by inhibiting PPARγ transactivation and JAK2/STAT3 phosphorylation and thus may serve as a therapeutic target in obesity.
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Affiliation(s)
- Yoon-Su Ha
- Department of Biochemistry, College of Natural Sciences, and Kangwon Institute of Inclusive Technology, Kangwon National University, 24341 Chuncheon, Republic of Korea; Global/Gangwon Innovative Biologics-Regional Leading Research Center (GIB-RLRC), Kangwon National University, 24341 Chuncheon, Republic of Korea
| | - Taek-Kyong Kim
- Department of Biochemistry, College of Natural Sciences, and Kangwon Institute of Inclusive Technology, Kangwon National University, 24341 Chuncheon, Republic of Korea; Global/Gangwon Innovative Biologics-Regional Leading Research Center (GIB-RLRC), Kangwon National University, 24341 Chuncheon, Republic of Korea
| | - Ki-Sun Park
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Seonghwan Hwang
- College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan, 46241, South Korea
| | - Jeongkyu Kim
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
| | - Seung-Jin Kim
- Department of Biochemistry, College of Natural Sciences, and Kangwon Institute of Inclusive Technology, Kangwon National University, 24341 Chuncheon, Republic of Korea; Global/Gangwon Innovative Biologics-Regional Leading Research Center (GIB-RLRC), Kangwon National University, 24341 Chuncheon, Republic of Korea.
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20
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Dai Y, Chen S, Li Y, Zhang G, Bi P, Nie K. Liujunzi Decoction ameliorated cisplatin-induced anorexia by inhibiting the JAK-STAT signaling pathway and coordinating anorexigenic and orexigenic neuropeptides in rats. JOURNAL OF ETHNOPHARMACOLOGY 2022; 285:114840. [PMID: 34800646 DOI: 10.1016/j.jep.2021.114840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/03/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE As a traditional Chinese formula, Liujunzi Decoction (LJZD) originated from the Yi Xue Zheng Zhuan, and has a promising effect in treating chemotherapy-induced anorexia (CIA). AIM OF THE STUDY The present study aims to investigate whether LJZD acts on interleukin-6 (IL-6)/leptin mediated janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathway that regulates hypothalamus anorexigenic and orexigenic peptides to ameliorate CIA, and also elucidates the potential mechanism by metabolomic analysis. MATERIALS AND METHODS Network pharmacology analyses were conducted to screen out potential targets and pathways. The CIA rat model was established via an intraperitoneal injection of cisplatin. The histological changes of gastric antrum, liver and ileum were observed by HE staining. The serum levels of leptin, ghrelin, IL-6 and growth differentiation factor 15 (GDF15) were measured by ELISA. The JAK1/2 and STAT levels in gastric antrum and hypothalamus were detected by Western blot. The transcriptions of gastric antrum and hypothalamus IL-6R mRNA, and hypothalamus cocaine- and amphetamine-regulated transcript (CART), pro-opiomelanocortin (POMC), thyrotropin-releasing hormone (TRH), upregulated orexigenic peptides neuropeptide Y (NPY), and agouti-related protein (AGRP) mRNA were assessed by RT-qPCR. The blood samples of control, model and high dose LJZD groups were analyzed by metabolomic. RESULTS Network pharmacology highlighted the IL-6/leptin mediated JAK-STAT signaling pathway, which regulated downstream anorexigenic and orexigenic peptides in hypothalamus. LJZD ameliorated CIA via stimulating food intake and water consumption in rats. Cisplatin-induced gastric antrum, liver, ileum injuries were ameliorated, serum leptin level reduction was elevated, and ghrelin, IL-6, GDF15 level increases were decreased after LJZD treatments. In gastric antrum and hypothalamus, LJZD inhibited cisplatin-induced activation of JAK-STAT signaling pathway, downregulated the transcriptions of downstream anorexigenic peptides CART, POMC, TRH, and upregulated orexigenic peptides NPY, AGRP in hypothalamus. Importantly, the effect of LJZD in treating CIA might partly relate to the improvements of 23 abnormal metabolites. CONCLUSION This study implies that inhibiting JAK-STAT signaling pathway, regulating the expressions of anorexigenic and orexigenic peptides, and mediating various metabolic pathways might be potential mechanisms of LJZD's effect against CIA.
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Affiliation(s)
- Yongzhao Dai
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
| | - Siqi Chen
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
| | - Yaqi Li
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
| | - Guanglong Zhang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
| | - Pingping Bi
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
| | - Ke Nie
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
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Cheng Z, Xiong X, Zhou Y, Wu F, Shao Q, Dong R, Liu Q, Li L, Chen G. 6-gingerol ameliorates metabolic disorders by inhibiting hypertrophy and hyperplasia of adipocytes in high-fat-diet induced obese mice. Biomed Pharmacother 2022; 146:112491. [PMID: 34896967 DOI: 10.1016/j.biopha.2021.112491] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/15/2021] [Accepted: 11/30/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES Accumulating studies revealed that 6-gingerol, a compound extracted mainly from ginger, treats obesity by preventing hyperlipidemia in vivo induced by high-fat-diet (HFD). The present study intends to further evaluate the efficacy of 6-gingerol in the treatment of obesity and investigate its potential mechanism. METHODS Obese mice were established by HFD induction. Bioinformatic analysis was used to predict the possible pathways enrolled by the application of 6-gingerol. Body weight and the levels of blood glucose and lipids were examined and analyzed for the evaluation of the therapeutic effect of 6-gingerol. The size and amounts as well as the status of adipocytes were determined by histological staining. The expression levels of related proteins in adipose tissue were assessed by immunohistochemical staining, immunofluorescent staining, and Western blot analysis. In addition, the expression levels of related mRNA were assessed by RT-qPCR. RESULTS HFD induced obesity was significantly curbed by 6-gingerol treatment. Here inhibition mechanism of 6-gingerol is demonstrated on excessive hypertrophy and hyperplasia of adipocytes in white adipose tissue (WAT), which may be related to the regulation of adipocytokines, such as PPARγ, C/EBPα, FABP4 and adiponectin, and the TLR3/IL-6/JAK1/STAT3 axis. Moreover, 6-gingerol treatment suppressed the expressions of IL-1β and CD68 in the liver and AKT/INSR/IRS-1 in epididymal WAT. CONCLUSION The results suggested that 6-gingerol could alleviate metabolic inflammation in the liver and insulin resistance to treat obesity. The mechanism is mainly involved in the inhibition of excessive hypertrophy and hyperplasia of adipocytes.
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Affiliation(s)
- Zhe Cheng
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xinyu Xiong
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yi Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Fan Wu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qingqing Shao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ruolan Dong
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qiong Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lingli Li
- Department of Traditional Chinese Medicine, Wuhan Fourth Hospital, Pu'ai Hospital, Tongji Medical College,Huazhong University of Science and Technology, Wuhan 430033, China.
| | - Guang Chen
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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The Effects of RBP4 and Vitamin D on the Proliferation and Migration of Vascular Smooth Muscle Cells via the JAK2/STAT3 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3046777. [PMID: 35082965 PMCID: PMC8786468 DOI: 10.1155/2022/3046777] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/02/2021] [Accepted: 12/17/2021] [Indexed: 02/06/2023]
Abstract
Abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) are one of the main causes of the development of diabetic atherosclerotic process. The aim of our study was to assess the role of RBP4 in the proliferation and migration of VSMCs and the inhibitory effect of vitamin D on the mechanisms. In an in vivo experiment, rats were randomly classified into 6 groups: the control group, diabetic rats, diabetic atherosclerotic rats (diabetic rats intraperitoneally injected with RBP4), diabetic atherosclerotic rats treated with 0.075 μg kg−1 d−1 vitamin D, 0.15 μg kg−1 d−1 vitamin D and 0.3 μg kg−1 d−1 vitamin D. We found that the levels of JAK2, STAT3, cylinD1, and Bcl-2 were increased in diabetic atherosclerotic rats, and these increases were improved after vitamin D supplementation. Furthermore, to investigate the underlying molecular mechanisms, cells were cultured with glucose in the presence of RBP4 and the absence of RBP4, respectively, and vitamin D of different concentrations and different intervention times was simultaneously adopted. The proliferation and migration of VSMCs was enhanced and the levels of JAK2, STAT3, cyclinD1, and Bcl-2 were increased in the cells transfected with RBP4 overexpression plasmid. Moreover, vitamin D supplementation was detected to lower the expressions of JAK2, STAT3, cyclinD1, and Bcl-2 and inhibit the abnormal proliferation of VSMCs caused by the RBP4/JAK2/STAT3 signaling pathway. RBP4 can promote the proliferation and migration of VSMCs and contributes to the development of diabetic macroangiopathy via regulating the JAK2/STAT3 signaling pathway. This mechanism of RBP4 can be inhibited by vitamin D supplementation.
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Lactobacillus plantarum K8-based paraprobiotics suppress lipid accumulation during adipogenesis by the regulation of JAK/STAT and AMPK signaling pathways. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104824] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Abstract
The Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway was discovered more than a quarter-century ago. As a fulcrum of many vital cellular processes, the JAK/STAT pathway constitutes a rapid membrane-to-nucleus signaling module and induces the expression of various critical mediators of cancer and inflammation. Growing evidence suggests that dysregulation of the JAK/STAT pathway is associated with various cancers and autoimmune diseases. In this review, we discuss the current knowledge about the composition, activation, and regulation of the JAK/STAT pathway. Moreover, we highlight the role of the JAK/STAT pathway and its inhibitors in various diseases.
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Affiliation(s)
- Xiaoyi Hu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Jing Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China
| | - Maorong Fu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China
| | - Xia Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China.
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, 610041, Chengdu, P. R. China.
| | - Wei Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China.
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Hu X, Li J, Fu M, Zhao X, Wang W. The JAK/STAT signaling pathway: from bench to clinic. Signal Transduct Target Ther 2021; 6:402. [PMID: 34824210 PMCID: PMC8617206 DOI: 10.1038/s41392-021-00791-1] [Citation(s) in RCA: 819] [Impact Index Per Article: 273.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 09/09/2021] [Accepted: 09/21/2021] [Indexed: 02/08/2023] Open
Abstract
The Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway was discovered more than a quarter-century ago. As a fulcrum of many vital cellular processes, the JAK/STAT pathway constitutes a rapid membrane-to-nucleus signaling module and induces the expression of various critical mediators of cancer and inflammation. Growing evidence suggests that dysregulation of the JAK/STAT pathway is associated with various cancers and autoimmune diseases. In this review, we discuss the current knowledge about the composition, activation, and regulation of the JAK/STAT pathway. Moreover, we highlight the role of the JAK/STAT pathway and its inhibitors in various diseases.
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Affiliation(s)
- Xiaoyi Hu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Jing Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China
| | - Maorong Fu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China
| | - Xia Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China.
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, 610041, Chengdu, P. R. China.
| | - Wei Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy Chengdu, 610041, Sichuan, P. R. China.
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Preventive Effects of Green Tea Extract against Obesity Development in Zebrafish. Molecules 2021; 26:molecules26092627. [PMID: 33946279 PMCID: PMC8124760 DOI: 10.3390/molecules26092627] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 12/13/2022] Open
Abstract
Various natural products (NPs) have been used to treat obesity and related diseases. However, the best way to fight obesity is preventive, with accurate body weight management through exercise, diet, or bioactive NPs to avoid obesity development. We demonstrated that green tea extract (GTE) is an anti-obesity NP using a zebrafish obesity model. Based on a hypothesis that GTE can prevent obesity, the objective of this study was to assess GTE's ability to attenuate obesity development. Juvenile zebrafish were pretreated with GTE for seven days before obesity induction via a high-fat diet; adult zebrafish were pretreated with GTE for two weeks before obesity induction by overfeeding. As a preventive intervention, GTE significantly decreased visceral adipose tissue accumulation in juveniles and ameliorated visceral adiposity and plasma triglyceride levels in adult zebrafish obesity models. RNA sequencing analysis was performed using liver tissues from adult obese zebrafish, with or without GTE administration, to investigate the underlying molecular mechanism. Transcriptome analysis revealed that preventive GTE treatment affects several pathways associated with anti-obesity regulation, including activation of STAT and downregulation of CEBP signaling pathways. In conclusion, GTE could be used as a preventive agent against obesity.
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Han F, Li J, Zhao R, Liu L, Li L, Li Q, He J, Liu N. Identification and co-expression analysis of long noncoding RNAs and mRNAs involved in the deposition of intramuscular fat in Aohan fine-wool sheep. BMC Genomics 2021; 22:98. [PMID: 33526009 PMCID: PMC7852088 DOI: 10.1186/s12864-021-07385-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 01/13/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Intramuscular fat (IMF) content has become one of the most important indicators for measuring meat quality, and levels of IMF are affected by various genes. Long non-coding RNAs (lncRNAs) are widely expressed non-coding RNAs that play an important regulatory role in a variety of biological processes; however, research on the lncRNAs involved in sheep IMF deposition is still in its infancy. Aohan fine-wool sheep (AFWS), one of China's most important meat-hair, dual-purpose sheep breed, provides a great model for studying the role of lncRNAs in the regulation of IMF deposition. We identified lncRNAs by RNA sequencing in Longissimus thoracis et lumborum (LTL) samples of sheep at two ages: 2 months (Mth-2) and 12 months (Mth-12). RESULTS We identified a total of 26,247 genes and 6935 novel lncRNAs in LTL samples of sheep. Among these, 199 mRNAs and 61 lncRNAs were differentially expressed. We then compared the structural characteristics of lncRNAs and mRNAs. We obtained target genes of differentially expressed lncRNAs (DELs) and performed enrichment analyses using Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG). We found that target mRNAs were enriched in metabolic processes and developmental pathways. One pathway was significantly enriched, namely tight junction. Based on the analysis of critical target genes, we obtained seven candidate lncRNAs that potentially regulated lipid deposition and constructed a lncRNA-mRNA co-expression network that included MSTRG.4051.3-FZD4, MSTRG.16157.3-ULK1, MSTRG.21053.3-PAQR3, MSTRG.19941.2-TPI1, MSTRG.12864.1-FHL1, MSTRG.2469.2-EXOC6 and MSTRG.21381.1-NCOA1. We speculated that these candidate lncRNAs might play a role by regulating the expression of target genes. We randomly selected five mRNAs and five lncRNAs to verify the accuracy of the sequencing data by qRT-PCR. CONCLUSIONS Our study identified the differentially expressed mRNAs and lncRNAs during intramuscular lipid deposition in Aohan fine-wool sheep. The work may widen the knowledge about the annotation of the sheep genome and provide a working basis for investigating intramuscular fat deposition in sheep.
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Affiliation(s)
- Fuhui Han
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jing Li
- Qufu Animal Husbandry and Veterinary Technical Service Center, Qufu, 273100, China
| | - Ranran Zhao
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Lirong Liu
- China Animal Health and Epidemiology Center, Qingdao, 266032, China
| | - Lanlan Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Qian Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jianning He
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China.
| | - Nan Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China.
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Sodhi K, Denvir J, Liu J, Sanabria JR, Chen Y, Silverstein R, Xie Z, Abraham NG, Shapiro JI. Oxidant-Induced Alterations in the Adipocyte Transcriptome: Role of the Na,K-ATPase Oxidant Amplification Loop. Int J Mol Sci 2020; 21:ijms21165923. [PMID: 32824688 PMCID: PMC7460641 DOI: 10.3390/ijms21165923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/12/2020] [Accepted: 08/15/2020] [Indexed: 12/22/2022] Open
Abstract
(1) Background: Recently we have noted that adipocyte specific expression of the peptide, NaKtide, which was developed to attenuate the Na,K-ATPase oxidant amplification loop, could ameliorate the phenotypical features of uremic cardiomyopathy. We performed this study to better characterize the cellular transcriptomes that are involved in various biological pathways associated with adipocyte function occurring with renal failure. (2) Methods: RNAseq was performed on the visceral adipose tissue of animals subjected to partial nephrectomy. Specific expression of NaKtide in adipocytes was achieved using an adiponectin promoter. To better understand the cause of gene expression changes in vivo, 3T3L1 adipocytes were exposed to indoxyl sulfate (IS) or oxidized low density lipoprotein (oxLDL), with and without pNaKtide (the cell permeant form of NaKtide). RNAseq was also performed on these samples. (3) Results: We noted a large number of adipocyte genes were altered in experimental renal failure. Adipocyte specific NaKtide expression reversed most of these abnormalities. High correlation with some cardiac specific phenotypical features was noted amongst groups of these genes. In the murine adipocytes, both IS and oxLDL induced similar pathway changes as were noted in vivo, and pNaKtide appeared to reverse these changes. Network analysis demonstrated tremendous similarities between the network revealed by gene expression analysis with IS compared with oxLDL, and the combined in vitro dataset was noted to also have considerable similarity to that seen in vivo with experimental renal failure. (4) Conclusions: This study suggests that the myriad of phenotypical features seen with experimental renal failure may be fundamentally linked to oxidant stress within adipocytes.
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Affiliation(s)
- Komal Sodhi
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (K.S.); (J.D.); (J.L.); (J.R.S.)
| | - James Denvir
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (K.S.); (J.D.); (J.L.); (J.R.S.)
| | - Jiang Liu
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (K.S.); (J.D.); (J.L.); (J.R.S.)
| | - Juan R. Sanabria
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (K.S.); (J.D.); (J.L.); (J.R.S.)
| | - Yiliang Chen
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (Y.C.); (R.S.)
| | - Roy Silverstein
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (Y.C.); (R.S.)
| | - Zijian Xie
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (K.S.); (J.D.); (J.L.); (J.R.S.)
| | - Nader G. Abraham
- Departments of Medicine and Pharmacology, New York Medical College, Valhalla, NY 10595, USA;
| | - Joseph I. Shapiro
- Departments of Medicine, Surgery, and Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (K.S.); (J.D.); (J.L.); (J.R.S.)
- Correspondence: ; Tel.: +1-(304)-691-1704
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Metabolic and Molecular Mechanisms of Macrophage Polarisation and Adipose Tissue Insulin Resistance. Int J Mol Sci 2020; 21:ijms21165731. [PMID: 32785109 PMCID: PMC7460862 DOI: 10.3390/ijms21165731] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/26/2020] [Accepted: 08/08/2020] [Indexed: 12/17/2022] Open
Abstract
Inflammation plays a key role in the development and progression of type-2 diabetes (T2D), a disease characterised by peripheral insulin resistance and systemic glucolipotoxicity. Visceral adipose tissue (AT) is the main source of inflammation early in the disease course. Macrophages are innate immune cells that populate all peripheral tissues, including AT. Dysregulated AT macrophage (ATM) responses to microenvironmental changes are at the root of aberrant inflammation and development of insulin resistance, locally and systemically. The inflammatory activation of macrophages is regulated at multiple levels: cell surface receptor stimulation, intracellular signalling, transcriptional and metabolic levels. This review will cover the main mechanisms involved in AT inflammation and insulin resistance in T2D. First, we will describe the physiological and pathological changes in AT that lead to inflammation and insulin resistance. We will next focus on the transcriptional and metabolic mechanisms described that lead to the activation of ATMs. We will discuss more novel metabolic mechanisms that influence macrophage polarisation in other disease or tissue contexts that may be relevant to future work in insulin resistance and T2D.
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Vanillic Acid Improves Comorbidity of Cancer and Obesity through STAT3 Regulation in High-Fat-Diet-Induced Obese and B16BL6 Melanoma-Injected Mice. Biomolecules 2020; 10:biom10081098. [PMID: 32722030 PMCID: PMC7464557 DOI: 10.3390/biom10081098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/20/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022] Open
Abstract
Obesity is known to be associated with risk and aggressiveness of cancer. Melanoma, the most lethal type of skin cancer, is also closely related to the prevalence of obesity. In this study, we established a cancer–obesity comorbidity (COC) model to investigate the effects of vanillic acid (VA). After a five-week administration with a high-fat diet (HFD) to induce obesity, subcutaneous allograft of B16BL6 cells were followed, and VA was orally administrated for an additional two weeks. VA-fed mice showed significantly decreased body weight and white adipose tissue (WAT) weight, which were due to increased thermogenesis and AMPK activation in WATs. Growth of cancer was also suppressed. Mechanistic studies revealed increased apoptosis and autophagy markers by VA; however, caspase 3 was not involved. Since signal transducer and activator of transcription 3 (STAT3) is suggested as an important pathway linking obesity and cancer, we further investigated to find out if STAT3 phosphorylation was repressed by VA treatment, and this was again confirmed in a COC cell model of adipocyte conditioned medium-treated B16BL6 melanoma cells. Overall, our results show VA induces STAT3-mediated autophagy to inhibit cancer growth and thermogenesis to ameliorate obesity in COC. Based on these findings, we suggest VA as a candidate therapeutic agent for COC treatment.
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Latest advances in STAT signaling and function in adipocytes. Clin Sci (Lond) 2020; 134:629-639. [PMID: 32219346 DOI: 10.1042/cs20190522] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/24/2020] [Accepted: 03/09/2020] [Indexed: 02/07/2023]
Abstract
Adipocytes and adipose tissue are not inert and make substantial contributions to systemic metabolism by influencing energy homeostasis, insulin sensitivity, and lipid storage. In addition to well-studied hormones such as insulin, there are numerous hormones, cytokines, and growth factors that modulate adipose tissue function. Many endocrine mediators utilize the JAK-STAT pathway to mediate dozens of biological processes, including inflammation and immune responses. JAKs and STATs can modulate both adipocyte development and mature adipocyte function. Of the seven STAT family members, four STATs are expressed in adipocytes and regulated during adipogenesis (STATs 1, 3, 5A, and 5B). These STATs have been shown to play influential roles in adipose tissue development and function. STAT6, in contrast, is highly expressed in both preadipocytes and mature adipocytes, but is not considered to play a major role in regulating adipose tissue function. This review will summarize the latest research that pertains to the functions of STATs in adipocytes and adipose tissue.
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Wu F, Yang X, Hu M, Shao Q, Fang K, Li J, Zhao Y, Xu L, Zou X, Lu F, Chen G. Wu-Mei-Wan prevents high-fat diet-induced obesity by reducing white adipose tissue and enhancing brown adipose tissue function. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2020; 76:153258. [PMID: 32563018 DOI: 10.1016/j.phymed.2020.153258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 05/01/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Wu-Mei-Wan, a classic traditional Chinese herb medicine, is one of the most important formulations to treat digestive diseases from ancient times to the present. Our previous study showed that WMW treatment can prevent T2DM in db/db mice, which motivating the application of WMW on metabolic disorders. PURPOSE Obesity and its comorbid diseases have increased dramatically and are now a worldwide health problem. There is still a lack of satisfactory treatment strategies for obesity. This work was designed to assess the effect and related mechanism of WMW on high fat diet (HFD)-induced obese mice model. METHODS Obese mice were induced by HFD. Thetherapeutic effect of WMW were analyzed by examining body and adipose tissue weight, metabolic profile and energy expenditure. Adipose tissue phenotype was determined by histological staining and the mitochondrial content was examined by transmission electron microscopy (TEM). Immunohistochemical and immunofluorescence staining, RT-qPCR and Western blot analysis were used to evaluate expression of key molecules in adipose tissue. RESULTS WMW treatment significantly protects HFD-induced obesity. Here we showed that WMW limits weight gain, improves metabolic profile and increases energy expenditure. WMW inhibits the hypertrophy and hyperplasia of white adipocytes, the mechanism involving the inhibition of TLR3/IL-6/JAK1/STAT3 pathway. In brown adipose tissue (BAT), WMW promotes thermogenicprogramme without affecting cell proliferation. The activated BMP7/ Smad1/5/9 pathway is considered to be one of the explanations for the effect of WMW on BAT. CONCLUSION Our results suggested that WMW can prevent obesity and its underlying mechanisms are associated with reducing white adipose tissue and enhancing brown adipose tissue function.
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Affiliation(s)
- Fan Wu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Xueping Yang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Meilin Hu
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Qingqing Shao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Ke Fang
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Jingbin Li
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Yan Zhao
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Lijun Xu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Xin Zou
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Fuer Lu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Guang Chen
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Wang X, Liu M, Cai GH, Chen Y, Shi XC, Zhang CC, Xia B, Xie BC, Liu H, Zhang RX, Lu JF, Zhu MQ, Yang SZ, Chu XY, Zhang DY, Wang YL, Wu JW. A Potential Nutraceutical Candidate Lactucin Inhibits Adipogenesis through Downregulation of JAK2/STAT3 Signaling Pathway-Mediated Mitotic Clonal Expansion. Cells 2020; 9:cells9020331. [PMID: 32023857 PMCID: PMC7072480 DOI: 10.3390/cells9020331] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 01/15/2020] [Accepted: 01/19/2020] [Indexed: 12/12/2022] Open
Abstract
The prevalence of obesity has increased dramatically worldwide in the past ~50 years. Searching for safe and effective anti-obesity strategies are urgently needed. Lactucin, a plant-derived natural small molecule, is known for anti-malaria and anti-hyperalgesia. The study is to investigate whether lactucin plays a key role in adipogenesis. To this end, in vivo male C57BL/6 mice fed a high-fat diet (HFD) were treated with 20 mg/kg/day of lactucin or vehicle by gavage for seven weeks. Compared with vehicle-treated controls, Lactucin-treated mice showed lower body mass and mass of adipose tissue. Consistently, in vitro 3T3-L1 cells were treated with 20 μM of lactucin. Compared to controls, lactucin-treated cells showed significantly less lipid accumulation during adipocyte differentiation and lower levels of lipid synthesis markers. Mechanistically, we showed the anti-adipogenic property of lactucin was largely limited to the early stage of adipogenesis. Lactucin-treated cells fail to undergo mitotic clonal expansion (MCE). Further studies demonstrate that lactucin-induced MCE arrests might result from reduced phosphorylation of JAK2 and STAT3. We then asked whether activation of JAK2/STAT3 would restore the inhibitory effect of lactucin on adipogenesis with pharmacological STAT3 activator colivelin. Our results revealed similar levels of lipid accumulation between lactucin-treated cells and controls in the presence of colivelin, indicating that inactivation of STAT3 is the limiting factor for the anti-adipogenesis of lactucin in these cells. Together, our results provide the indication that lactucin exerts an anti-adipogenesis effect, which may open new therapeutic options for obesity.
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Zatterale F, Longo M, Naderi J, Raciti GA, Desiderio A, Miele C, Beguinot F. Chronic Adipose Tissue Inflammation Linking Obesity to Insulin Resistance and Type 2 Diabetes. Front Physiol 2020; 10:1607. [PMID: 32063863 PMCID: PMC7000657 DOI: 10.3389/fphys.2019.01607] [Citation(s) in RCA: 504] [Impact Index Per Article: 126.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/23/2019] [Indexed: 12/13/2022] Open
Abstract
Obesity is one of the major health burdens of the 21st century as it contributes to the growing prevalence of its related comorbidities, including insulin resistance and type 2 diabetes. Growing evidence suggests a critical role for overnutrition in the development of low-grade inflammation. Specifically, chronic inflammation in adipose tissue is considered a crucial risk factor for the development of insulin resistance and type 2 diabetes in obese individuals. The triggers for adipose tissue inflammation are still poorly defined. However, obesity-induced adipose tissue expansion provides a plethora of intrinsic signals (e.g., adipocyte death, hypoxia, and mechanical stress) capable of initiating the inflammatory response. Immune dysregulation in adipose tissue of obese subjects results in a chronic low-grade inflammation characterized by increased infiltration and activation of innate and adaptive immune cells. Macrophages are the most abundant innate immune cells infiltrating and accumulating into adipose tissue of obese individuals; they constitute up to 40% of all adipose tissue cells in obesity. In obesity, adipose tissue macrophages are polarized into pro-inflammatory M1 macrophages and secrete many pro-inflammatory cytokines capable of impairing insulin signaling, therefore promoting the progression of insulin resistance. Besides macrophages, many other immune cells (e.g., dendritic cells, mast cells, neutrophils, B cells, and T cells) reside in adipose tissue during obesity, playing a key role in the development of adipose tissue inflammation and insulin resistance. The association of obesity, adipose tissue inflammation, and metabolic diseases makes inflammatory pathways an appealing target for the treatment of obesity-related metabolic complications. In this review, we summarize the molecular mechanisms responsible for the obesity-induced adipose tissue inflammation and progression toward obesity-associated comorbidities and highlight the current therapeutic strategies.
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Affiliation(s)
- Federica Zatterale
- Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
| | - Michele Longo
- Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
| | - Jamal Naderi
- URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy.,Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy
| | - Gregory Alexander Raciti
- Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
| | - Antonella Desiderio
- Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
| | - Claudia Miele
- Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
| | - Francesco Beguinot
- Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,URT Genomic of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
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Hou W, Chen Q, Wang H, Qiu P, Lyu X, Chen W, Chua MLK, Chinn YE, Deng CX, Wang R. The metabolic footprint during adipocyte commitment highlights ceramide modulation as an adequate approach for obesity treatment. EBioMedicine 2020; 51:102605. [PMID: 31901865 PMCID: PMC6940659 DOI: 10.1016/j.ebiom.2019.102605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 12/12/2019] [Accepted: 12/12/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Metabolic modulation is capable of maintaining cell potency, regulating niche homeostasis, or determining cell fate. However, little is known regarding the metabolic landscape during early adipogenesis or whether metabolic modulation could be a potential approach for obesity treatment. METHODS The metabolic footprint during adipocyte commitment was evaluated by metabolomics analysis in mouse embryonic fibroblasts (MEFs). The role of apoptosis induced by ceramide and how ceramide is regulated were evaluated by omics analysis in vitro, human database and the adipocyte-specific Sirt1 knockout mouse. FINDINGS The metabolic footprint showed that a complicated diversity of metabolism was enriched as early as 3 h and tended to fluctuate throughout differentiation. Subsequently, the scale of these perturbed metabolic patterns was reduced to reach a balanced state. Of high relevance is the presence of apoptosis induced by ceramide accumulation, which is associated with metabolic dynamics. Interestingly, apoptotic cells were not merely a byproduct of adipogenesis but rather promoted the release of lipid components to facilitate adipogenesis. Mechanistically, ceramide accumulation stemming from hydrolysis and the de novo pathway during early adipogenesis is regulated by Sirt1 upon epigenetic alterations of constitutive Histone H3K4 methylation and H3K9 acetylation. INTERPRETATION The metabolic footprint during adipocyte commitment highlights that apoptosis induced by ceramide is essential for adipogenesis, which is reversed by suppression of Sirt1. Therefore, Sirt1 may constitute a target to treat obesity or other ceramide-associated metabolic syndromes. FUNDING This project was supported by grants from the University of Macau (SRG2015-00008-FHS, MYRG2016-00054-FHS and MYRG2017-00096-FHS to RHW; CPG2019-00019-FHS to CXD) and from the National Natural Science Foundation of China (81672603 and 81401978) to QC.
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Affiliation(s)
- Weilong Hou
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Qiang Chen
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Haitao Wang
- Faculty of Health Sciences, University of Macau, Macau SAR, China; Division of Radiation Oncology, National Cancer Centre Singapore, Singapore; Division of Medical Sciences, National Cancer Centre Singapore, Singapore; Oncology Academic Programme, Duke-NUS Medical School, Singapore
| | - Pengxiang Qiu
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Xueying Lyu
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Weiping Chen
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 20892, United States
| | - Melvin L K Chua
- Division of Radiation Oncology, National Cancer Centre Singapore, Singapore; Division of Medical Sciences, National Cancer Centre Singapore, Singapore; Oncology Academic Programme, Duke-NUS Medical School, Singapore
| | - Y Eugene Chinn
- Institute of Biology and Medical Sciences, Soochow University School of Medicine, 199# Ren'ai Road, Suzhou Jiangsu 215123, China
| | - Chu-Xia Deng
- Faculty of Health Sciences, University of Macau, Macau SAR, China.
| | - Ruihong Wang
- Faculty of Health Sciences, University of Macau, Macau SAR, China; Center for Cancer Research, Nation Cancer Institute, National Institutes of Health, Bethesda, MD 20892, United States.
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Abstract
PURPOSE OF REVIEW Obesity is a major risk factor for type 2 diabetes. Although adipose tissue allows storage of excess calories in periods of overnutrition, in obesity, adipose tissue metabolism becomes dysregulated and can promote metabolic diseases. This review discusses recent advances in understandings how adipocyte metabolism impacts metabolic homeostasis. RECENT FINDINGS The ability of adipocytes to synthesize lipids from glucose is a marker of metabolic fitness, e.g., low de novo lipogenesis (DNL) in adipocytes correlates with insulin resistance in obesity. Adipocyte DNL may promote synthesis of special "insulin sensitizing" signaling lipids that act hormonally. However, each metabolic intermediate in the DNL pathway (i.e., citrate, acetyl-CoA, malonyl-CoA, and palmitate) also has second messenger functions. Mounting evidence suggests these signaling functions may also be important for maintaining healthy adipocytes. While adipocyte DNL contributes to lipid storage, lipid precursors may have additional second messenger functions critical for maintaining adipocyte health, and thus systemic metabolic homeostasis.
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Affiliation(s)
- Wen-Yu Hsiao
- Program in Molecular Medicine, University of Massachusetts Medical School, 373 Plantation Street, Worcester, MA, 01605, USA
| | - David A Guertin
- Program in Molecular Medicine, University of Massachusetts Medical School, 373 Plantation Street, Worcester, MA, 01605, USA.
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Chen Q, Lv J, Yang W, Xu B, Wang Z, Yu Z, Wu J, Yang Y, Han Y. Targeted inhibition of STAT3 as a potential treatment strategy for atherosclerosis. Theranostics 2019; 9:6424-6442. [PMID: 31588227 PMCID: PMC6771242 DOI: 10.7150/thno.35528] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 07/10/2019] [Indexed: 02/06/2023] Open
Abstract
Atherosclerosis is the main pathological basis of ischemic cardiovascular and cerebrovascular diseases and has attracted more attention in recent years. Multiple studies have demonstrated that the signal transducer and activator of transcription 3 (STAT3) plays essential roles in the process of atherosclerosis. Moreover, aberrant STAT3 activation has been shown to contribute to the occurrence and development of atherosclerosis. Therefore, the study of STAT3 inhibitors has gradually become a focal research topic. In this review, we describe the crucial roles of STAT3 in endothelial cell dysfunction, macrophage polarization, inflammation, and immunity during atherosclerosis. STAT3 in mitochondria is mentioned as well. Then, we present a summary and classification of STAT3 inhibitors, which could offer potential treatment strategies for atherosclerosis. Furthermore, we enumerate some of the problems that have interfered with the development of mature therapies utilizing STAT3 inhibitors to treat atherosclerosis. Finally, we propose ideas that may help to solve these problems to some extent. Collectively, this review may be useful for developing future STAT3 inhibitor therapies for atherosclerosis.
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Zhou J, Wang W, Jing X, Degen A, Guo Y, Kang J, Shang Z, Yu Z, Qiu Q, Guo X, Ding L, Yang G, Long R. Effect of dietary energy on digestibilities, rumen fermentation, urinary purine derivatives and serum metabolites in Tibetan and small-tailed Han sheep. J Anim Physiol Anim Nutr (Berl) 2019; 103:977-987. [PMID: 31021031 DOI: 10.1111/jpn.13098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 02/06/2019] [Accepted: 03/17/2019] [Indexed: 12/30/2022]
Abstract
Tibetan sheep are indigenous to the Qinghai-Tibetan Plateau, graze the grassland all year round without supplementation and are well-adapted to the harsh conditions. Small-tailed Han sheep were introduced to the plateau and are raised mainly in feedlots. Based on their different backgrounds, we hypothesized that the ability to cope with poor diets would be better in Tibetan than in Han sheep. To test our prediction, we examined the effect of dietary energy on apparent digestibilities, rumen fermentation, urinary purine derivatives and serum metabolites by using a 4 × 4 Latin square design in each sheep breed. Four diets were formulated to be low in crude protein (~7%) but to differ in metabolizable energy concentration. Average daily gain was greater in Tibetan than in Han sheep (p < 0.01) and increased linearly with an increase in energy intake (p < 0.001). The digestibilities of dry matter, organic matter, gross energy, and neutral and acid detergent fibres were greater in Tibetan than in Han sheep (p < 0.05). Ruminal pH was lower (p < 0.05), while volatile fatty acids (VFAs), urea-N, ammonia-N and soluble protein-N concentrations were higher (p < 0.05) in Tibetan than in Han sheep. As a molar proportion of total VFA, acetate decreased (p < 0.001) with an increase in dietary energy whereas propionate and butyrate increased (p < 0.05). Urinary purine derivative excretion was greater in Tibetan than in Han sheep (p < 0.01), as was microbial nitrogen production; both parameters increased with dietary energy (p < 0.01). Serum concentrations of glucose, insulin and insulin-like growth factor-1 increased (p < 0.05) as energy level increased, while non-esterified fatty acids and growth hormone decreased (p < 0.05). It was concluded that Tibetan sheep were better able to cope with low-protein, low-energy diets and, consequently, our prediction was supported.
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Affiliation(s)
- Jianwei Zhou
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Wenji Wang
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Xiaoping Jing
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Allan Degen
- Desert Animal Adaptations and Husbandry, Wyler Department of Dryland Agriculture, Blaustein Institutes for Desert Research, Ben-Gurion University of Negev, Beer Sheva, Israel
| | - Yamin Guo
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Jingpeng Kang
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Zhanhuan Shang
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China.,Qinghai Academy of Animal and Veterinary Sciences, Qinghai University, Xining, China
| | - Zhongxiang Yu
- Qinghai Academy of Animal and Veterinary Sciences, Qinghai University, Xining, China
| | - Qiang Qiu
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Xusheng Guo
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Luming Ding
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
| | - Guo Yang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
| | - Ruijun Long
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou, China
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Bie YN, Gu P, Chen YT, Zhou XX, Tian YG, Yang Q, Li HY, Lin X, Guan YH, Lin TY, Lu X, Shen HF, Fang TX, Liu YM, Xiao D, Gu WW. TZAP plays an inhibitory role in the self-renewal of porcine mesenchymal stromal cells and is implicated the regulation of premature senescence via the p53 pathway. J Transl Med 2019; 17:72. [PMID: 30845965 PMCID: PMC6404308 DOI: 10.1186/s12967-019-1820-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/21/2019] [Indexed: 01/01/2023] Open
Abstract
Background Mesenchymal stromal cells (MSCs) were originally characterized by the ability to differentiate into different mesenchymal lineages in vitro, and their immunomodulatory and trophic functions have recently aroused significant interest in the application of MSCs in cell-based regenerative medicine. However, a major problem in clinical practice is the replicative senescence of MSCs, which limits the cell proliferation potential of MSCs after large-scale expansion. Telomeric zinc finger-associated protein (TZAP), a novel specific telomere-binding protein, was recently found to stimulate telomere trimming and prevent excessive telomere elongation. The aim of this study was to elucidate the role of TZAP in regulating MSCs senescence, differentiation and proliferation. Method Primary porcine mesenchymal stromal cells (pMSCs) were isolated from the bone marrow of Tibet minipigs by a noninvasive method in combination with frequent medium changes (FMCs). The deterioration of the pMSCs’ proliferation capacity and their resultant entry into senescence were analyzed by using CCK8 and EdU incorporation assays, SA-β-gal staining and comparisons of the expression levels of cellular senescence markers (p16INK14 and p21) in pMSC cell lines with TZAP overexpression or knockout. The effects of TZAP overexpression or knockout on the differentiation potential of pMSCs were assessed by alizarin red S staining after osteogenic induction or by oil red O staining after adipogenic induction. The effect of TZAP overexpression and the involvement of the p53 signaling pathway were evaluated by detecting changes in ARF, MDM2, P53 and P21 protein levels in pMSCs. Results TZAP levels were significantly elevated in late-passage pMSCs compared to those in early-passage pMSCs. We also observed significantly increased levels of the senescence markers p16INK4A and p21. Overexpression of TZAP reduced the differentiation potential of the cells, leading to premature senescence in early-passage pMSCs, while knockout of TZAP led to the opposite phenotype in late-passage pMSCs. Furthermore, overexpression of TZAP activated the P53 pathway (ARF-MDM2-P53-P21WAF/CDKN1A) in vitro. TZAP also downregulated the expression levels of PPARγ and Cebpα, two key modulators of adipogenesis. Conclusions This study demonstrates that the level of TZAP is closely related to differentiation potential in pMSCs and affects cellular senescence outcomes via the p53 pathway. Therefore, attenuation of intracellular TZAP levels could be a new strategy for improving the efficiency of pMSCs in cell therapy and tissue engineering applications. Electronic supplementary material The online version of this article (10.1186/s12967-019-1820-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ya-Nan Bie
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China.,Songshan Lake Pearl Laboratory Animal Sci & Tech. Co., Ltd., Dongguan, China
| | - Peng Gu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China.,Songshan Lake Pearl Laboratory Animal Sci & Tech. Co., Ltd., Dongguan, China
| | - Yu-Ting Chen
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xiao-Xu Zhou
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China.,Songshan Lake Pearl Laboratory Animal Sci & Tech. Co., Ltd., Dongguan, China
| | - Yu-Guang Tian
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
| | - Qin Yang
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hai-Yan Li
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
| | - Xia Lin
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - Yan-Hong Guan
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
| | - Tao-Yan Lin
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - Xun Lu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
| | - Hong-Fen Shen
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou, China
| | - Ting-Xiao Fang
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
| | - Yu-Min Liu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China
| | - Dong Xiao
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University, Guangzhou, China.
| | - Wei-Wang Gu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University, Guangzhou, China. .,Songshan Lake Pearl Laboratory Animal Sci & Tech. Co., Ltd., Dongguan, China.
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Cho YL, Park JG, Kang HJ, Kim W, Cho MJ, Jang JH, Kwon MG, Kim S, Lee SH, Lee J, Kim YG, Park YJ, Kim WK, Bae KH, Kwon BM, Chung SJ, Min JK. Ginkgetin, a biflavone from Ginkgo biloba leaves, prevents adipogenesis through STAT5-mediated PPARγ and C/EBPα regulation. Pharmacol Res 2019; 139:325-336. [DOI: 10.1016/j.phrs.2018.11.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 09/28/2018] [Accepted: 11/20/2018] [Indexed: 12/13/2022]
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Cantwell MT, Farrar JS, Lownik JC, Meier JA, Hyun M, Raje V, Waters MR, Celi FS, Conrad DH, Harris TE, Larner AC. STAT3 suppresses Wnt/β-catenin signaling during the induction phase of primary Myf5+ brown adipogenesis. Cytokine 2018; 111:434-444. [PMID: 29934048 PMCID: PMC6289720 DOI: 10.1016/j.cyto.2018.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 05/24/2018] [Accepted: 05/27/2018] [Indexed: 12/28/2022]
Abstract
Thermogenic fat is a promising target for new therapies in diabetes and obesity. Understanding how thermogenic fat develops is important to develop rational strategies to treat obesity. Previously, we have shown that Tyk2 and STAT3, part of the JAK-STAT pathway, are necessary for proper development of classical brown fat. Using primary preadipocytes isolated from newborn mice we demonstrate that STAT3 is required for differentiation and robust expression of Uncoupling Protein 1 (UCP1). We also confirm that STAT3 is necessary during the early induction stage of differentiation and is dispensable during the later terminal differentiation stage. The inability of STAT3-/- preadipocytes to differentiate can be rescued using Wnt ligand secretion inhibitors when applied during the induction stage. Through chemical inhibition and RNAi, we show that it is the canonical β-catenin pathway that is responsible for the block in differentiation; inhibition or knockdown of β-catenin can fully rescue adipogenesis and UCP1 expression in the STAT3-/- adipocytes. During the induction stage, Wnts 1, 3a, and 10b have increased expression in the STAT3-/- adipocytes, potentially explaining the increased levels and activity of β-catenin. Our results for the first time point towards an interaction between the JAK/STAT pathway and the Wnt/β-catenin pathway during the early stages of in-vitro adipogenesis.
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Affiliation(s)
- Marc T Cantwell
- Center for Clinical and Translational Research, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Jared S Farrar
- Center for Clinical and Translational Research, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Joseph C Lownik
- Center for Clinical and Translational Research, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Jeremy A Meier
- Center for Clinical and Translational Research, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Moonjung Hyun
- Department of Biochemistry and Molecular Biology, and Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Vidisha Raje
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Michael R Waters
- Department of Biochemistry and Molecular Biology, and Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Francesco S Celi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA
| | - Daniel H Conrad
- Department of Microbiology and Immunology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Thurl E Harris
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Andrew C Larner
- Department of Biochemistry and Molecular Biology, and Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
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42
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Amorim ST, Kluska S, Berton MP, de Lemos MVA, Peripolli E, Stafuzza NB, Martin JF, Álvarez MS, Gaviña BV, Toro MA, Banchero G, Oliveira PS, Grigoletto L, Eler JP, Baldi F, Ferraz JBS. Genomic study for maternal related traits in Santa Inês sheep breed. Livest Sci 2018. [DOI: 10.1016/j.livsci.2018.09.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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43
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Analysis of new therapeutic strategies for diabetes mellitus based on traditional Chinese medicine “xiaoke” formulae. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2018. [DOI: 10.1016/j.jtcms.2018.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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44
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Zhang J, Qiu Q, Shang Z, Liu S, Degen A, Li S, Yan Q, Wang W, Jing X, Bai Y, Ding L. Effect of supplemental dietary slow-release urea on growth performance and physiological status of dairy heifers. Anim Sci J 2018; 89:966-971. [DOI: 10.1111/asj.13010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/19/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Jiaojiao Zhang
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Qiang Qiu
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Zhanhuan Shang
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Shujie Liu
- National Key Laboratory of Cultivating Base of Plateau Grazing Animal Nutrition and Ecology of Qinghai Province; Qinghai Academy of Animal and Veterinary Sciences; Xining China
| | - Allan Degen
- Desert Animal Adaptations and Husbandry; Wyler Department of Dryland Agriculture; Blaustein Institues for Desert Research; Ben-Gurion University of Negev; Beer Sheva Israel
| | - Shanshan Li
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Qi Yan
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Weiwei Wang
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Xiaoping Jing
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Yanfu Bai
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
| | - Luming Ding
- State Key Laboratory of Grassland Agro-Ecosystem; Institute of Arid Agroecology; School of Life Sciences; Lanzhou University; Lanzhou China
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45
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Hu W, Lv J, Han M, Yang Z, Li T, Jiang S, Yang Y. STAT3: The art of multi-tasking of metabolic and immune functions in obesity. Prog Lipid Res 2018; 70:17-28. [DOI: 10.1016/j.plipres.2018.04.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/04/2018] [Accepted: 04/06/2018] [Indexed: 02/07/2023]
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46
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Lee JB, Yoon SJ, Lee SH, Lee MS, Jung H, Kim TD, Yoon SR, Choi I, Kim IS, Chung SW, Lee HG, Min JK, Park YJ. Ginsenoside Rg3 ameliorated HFD-induced hepatic steatosis through downregulation of STAT5-PPARγ. J Endocrinol 2017; 235:223-235. [PMID: 29042402 DOI: 10.1530/joe-17-0233] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 09/26/2017] [Indexed: 01/01/2023]
Abstract
Healthy expansion of adipose tissue maintains metabolic homeostasis by storing excess chemical energy in increased fat mass. The STAT5-PPAR gamma pathway reportedly regulates adipocyte differentiation, lipid metabolism and adipogenesis. Ginsenoside Rg3 is one of the diverse groups of steroidal saponins, the major active components of ginseng, which have demonstrated pharmacological properties. In this study, we evaluated the therapeutic effects of ginsenoside Rg3 under pathological conditions in vitro and in vivo We examined the effects of ginsenoside Rg3 on glucose level, insulin sensitivity and lipogenesis in high-fat diet-fed C57BL/6 mice. Ginsenoside Rg3 was also applied to the pre-adipocyte cell line 3T3-L1 to assess the impact on lipogenesis. Ginsenoside Rg3 reduced epididymal white adipose tissue (eWAT) size and hepatic steatosis, and the amount of triglycerides (TGs) in both eWAT and liver. Similar to the murine model, Rg3-treated 3T3-L1 cells showed a reduction in lipid accumulation and amount of total TGs. Ginsenoside Rg3 regulates the expression of PPAR gamma though STAT5 in vitro and in vivo According to our results, lipid metabolism-related genes were downregulated in the high-fat mice and 3T3-L1 cell line. Rg3 shows potential for the amelioration of obesity-induced pathology, acting though STAT5-PPAR gamma to facilitate the healthy functioning of adipose tissue. This is the first report of evidence that obesity-induced insulin resistance and lipotoxicity can be treated with ginsenoside Rg3, which acts though the STAT5-PPAR gamma pathway in vivo and in vitro.
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Affiliation(s)
- Jin-Bong Lee
- Metabolic Regulation Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon Republic of Korea
- Department of Functional GenomicsUniversity of Science and Technology, Daejeon, Republic of Korea
| | - Sung-Jin Yoon
- Immunotherapy Convergence Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Sang-Hyun Lee
- Biotherapeutics Translational Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Moo-Seung Lee
- Department of Biomolecular ScienceUniversity of Science and Technology, Daejeon, Republic of Korea
- Infectious Disease Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Haiyoung Jung
- Department of Functional GenomicsUniversity of Science and Technology, Daejeon, Republic of Korea
- Immunotherapy Convergence Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Tae-Don Kim
- Department of Functional GenomicsUniversity of Science and Technology, Daejeon, Republic of Korea
- Immunotherapy Convergence Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Suk Ran Yoon
- Department of Functional GenomicsUniversity of Science and Technology, Daejeon, Republic of Korea
- Immunotherapy Convergence Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Inpyo Choi
- Department of Functional GenomicsUniversity of Science and Technology, Daejeon, Republic of Korea
- Immunotherapy Convergence Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Ik-Soo Kim
- Hanwool Life SciencesDaejeon, Republic of Korea
| | - Su Wol Chung
- School of Biological SciencesCollege of Natural Sciences, University of Ulsan, Ulsan, Republic of Korea
| | - Hee Gu Lee
- Department of Functional GenomicsUniversity of Science and Technology, Daejeon, Republic of Korea
- Department of Biomolecular ScienceUniversity of Science and Technology, Daejeon, Republic of Korea
| | - Jeong-Ki Min
- Biotherapeutics Translational Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
- Department of Biomolecular ScienceUniversity of Science and Technology, Daejeon, Republic of Korea
| | - Young-Jun Park
- Metabolic Regulation Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon Republic of Korea
- Immunotherapy Convergence Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
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47
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Richard AJ, Hang H, Stephens JM. Pyruvate dehydrogenase complex (PDC) subunits moonlight as interaction partners of phosphorylated STAT5 in adipocytes and adipose tissue. J Biol Chem 2017; 292:19733-19742. [PMID: 28982698 PMCID: PMC5712614 DOI: 10.1074/jbc.m117.811794] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/03/2017] [Indexed: 12/19/2022] Open
Abstract
STAT5 proteins play a role in adipocyte development and function, but their specific functions are largely unknown. To this end, we used an unbiased MS-based approach to identify novel STAT5-interacting proteins. We observed that STAT5A bound the E1β and E2 subunits of the pyruvate dehydrogenase complex (PDC). Whereas STAT5A typically localizes to the cytosol or nucleus, PDC normally resides within the mitochondrial matrix where it converts pyruvate to acetyl-CoA. We employed affinity purification and immunoblotting to validate the interaction between STAT5A and PDC subunits in murine and human cultured adipocytes, as well as in adipose tissue. We found that multiple PDC subunits interact with hormone-activated STAT5A in a dose- and time-dependent manner that coincides with tyrosine phosphorylation of STAT5. Using subcellular fractionation and immunofluorescence microscopy, we observed that PDC-E2 is present within the adipocyte nucleus where it associates with STAT5A. Because STAT5A is a transcription factor, we used chromatin immunoprecipitation (ChIP) to assess PDC's ability to interact with STAT5 DNA-binding sites. These analyses revealed that PDC-E2 is bound to a STAT5-binding site in the promoter of the STAT5 target gene cytokine-inducible SH2-containing protein (cish). We have demonstrated a compelling interaction between STAT5A and PDC subunits in adipocytes under physiological conditions. There is previous evidence that PDC localizes to cancer cell nuclei where it plays a role in histone acetylation. On the basis of our ChIP data and these previous findings, we hypothesize that PDC may modulate STAT5's ability to regulate gene expression by controlling histone or STAT5 acetylation.
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Affiliation(s)
- Allison J Richard
- From the Adipocyte Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808 and
| | - Hardy Hang
- From the Adipocyte Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808 and
| | - Jacqueline M Stephens
- From the Adipocyte Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808 and
- the Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803
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48
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Lee SE, Kang SG, Choi MJ, Jung SB, Ryu MJ, Chung HK, Chang JY, Kim YK, Lee JH, Kim KS, Kim HJ, Lee HK, Yi HS, Shong M. Growth Differentiation Factor 15 Mediates Systemic Glucose Regulatory Action of T-Helper Type 2 Cytokines. Diabetes 2017; 66:2774-2788. [PMID: 28874416 DOI: 10.2337/db17-0333] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/24/2017] [Indexed: 11/13/2022]
Abstract
T-helper type 2 (Th2) cytokines, including interleukin (IL)-13 and IL-4, produced in adipose tissue, are critical regulators of intra-adipose and systemic lipid and glucose metabolism. Furthermore, IL-13 is a potential therapy for insulin resistance in obese mouse models. Here, we examined mediators produced by adipocytes that are responsible for regulating systemic glucose homeostasis in response to Th2 cytokines. We used RNA sequencing data analysis of cultured adipocytes to screen factors secreted in response to recombinant IL-13. Recombinant IL-13 induced expression of growth differentiation factor 15 (GDF15) via the Janus kinase-activated STAT6 pathway. In vivo administration of α-galactosylceramide or IL-33 increased IL-4 and IL-13 production, thereby increasing GDF15 levels in adipose tissue and in plasma of mice; however, these responses were abrogated in STAT6 knockout mice. Moreover, administration of recombinant IL-13 to wild-type mice fed a high-fat diet (HFD) improved glucose intolerance; this was not the case for GDF15 knockout mice fed the HFD. Taken together, these data suggest that GDF15 is required for IL-13-induced improvement of glucose intolerance in mice fed an HFD. Thus, beneficial effects of Th2 cytokines on systemic glucose metabolism and insulin sensitivity are mediated by GDF15. These findings open up a potential pharmacological route for reversing insulin resistance associated with obesity.
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Affiliation(s)
- Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seul Gi Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Saet-Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Joon Young Chang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ju Hee Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jin Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Hyon-Seung Yi
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
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49
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Sun S, Wang R, Song J, Guan M, Li N, Zhang X, Zhao Z, Zhang J. Blocking gp130 signaling suppresses autotaxin expression in adipocytes and improves insulin sensitivity in diet-induced obesity. J Lipid Res 2017; 58:2102-2113. [PMID: 28874440 DOI: 10.1194/jlr.m075655] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 08/17/2017] [Indexed: 12/20/2022] Open
Abstract
Autotaxin (ATX), which is highly expressed and secreted by adipocytes, functions as the key enzyme to generate lysophosphatidic acid (LPA) from lysophosphatidylcholine. Adipose tissue is the main source of circulating ATX that modulates plasma LPA levels. Upregulation of ATX expression in obese patients and mice is closely related with insulin resistance and impaired glucose tolerance. However, the mechanism of ATX expression in adipocytes remains largely unknown. In this study, we found that glycoprotein 130 (gp130)-mediated Janus kinase (JAK)-signal transducer and activator of transcription 3 (STAT3) activation was required for abundant ATX expression in adipocytes. Through gp130, the interleukin 6 (IL-6) family cytokines, such as IL-6, leukemia inhibitory factor, cardiotrophin-1, and ciliary neurotrophic factor, upregulated ATX expression in adipocytes. ATX contributes to the induction of insulin resistance and lipolysis in IL-6-stimulated adipocytes. Oral administration of gp130 inhibitor SC144 suppressed ATX expression in adipose tissue, decreased plasma ATX, LPA, and FFA levels, and significantly improved insulin sensitivity and glucose tolerance in high-fat diet-fed obese mice. In summary, our results indicate that the activation of gp130-JAK-STAT3 pathway by IL-6 family cytokines has an important role in regulating ATX expression in adipocytes and that gp130 is a promising target in the management of obesity-associated glucose metabolic diseases.
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Affiliation(s)
- Shuhong Sun
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, Institute of Cell Biology, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Ran Wang
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, Institute of Cell Biology, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Jianwen Song
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, Institute of Cell Biology, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Ming Guan
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Na Li
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaotian Zhang
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, Institute of Cell Biology, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Zhenwen Zhao
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Junjie Zhang
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, Institute of Cell Biology, College of Life Sciences, Beijing Normal University, Beijing 100875, China
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50
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Murtaza M, Khan G, Aftab MF, Afridi SK, Ghaffar S, Ahmed A, Hafizur RM, Waraich RS. Cucurbitacin E reduces obesity and related metabolic dysfunction in mice by targeting JAK-STAT5 signaling pathway. PLoS One 2017; 12:e0178910. [PMID: 28598969 PMCID: PMC5466318 DOI: 10.1371/journal.pone.0178910] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 05/19/2017] [Indexed: 01/14/2023] Open
Abstract
Several members of cucurbitaceae family have been reported to regulate growth of cancer by interfering with STAT3 signaling. In the present study, we investigated the unique role and molecular mechanism of cucurbitacins (Cucs) in reducing symptoms of metabolic syndrome in mice. Cucurbitacin E (CuE) was found to reduce adipogenesis in murine adipocytes. CuE treatment diminished hypertrophy of adipocytes, visceral obesity and lipogenesis gene expression in diet induced mice model of metabolic syndrome (MetS). CuE also ameliorated adipose tissue dysfunction by reducing hyperleptinemia and TNF-alpha levels and enhancing hypoadiponectinemia. Results show that CuE mediated these effects by attenuating Jenus kinase- Signal transducer and activator of transcription 5 (JAK- STAT5) signaling in visceral fat tissue. As a result, CuE treatment also reduced PPAR gamma expression. Glucose uptake enhanced in adipocytes after stimulation with CuE and insulin resistance diminished in mice treated with CuE, as reflected by reduced glucose intolerance and glucose stimulated insulin secretion. CuE restored insulin sensitivity indirectly by inhibiting JAK phosphorylation and improving AMPK activity. Consequently, insulin signaling was up-regulated in mice muscle. As CuE positively regulated adipose tissue function and suppressed visceral obesity, dyslipedemia, hyperglycemia and insulin resistance in mice model of MetS, we suggest that CuE can be used as novel approach to treat metabolic diseases.
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Affiliation(s)
- Munazza Murtaza
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Gulnaz Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Meha Fatima Aftab
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Shabbir Khan Afridi
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Safina Ghaffar
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Ayaz Ahmed
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Rahman M Hafizur
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Rizwana Sanaullah Waraich
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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