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Wang F, Huynh PM, An YA. Mitochondrial Function and Dysfunction in White Adipocytes and Therapeutic Implications. Compr Physiol 2024; 14:5581-5640. [PMID: 39382163 DOI: 10.1002/cphy.c230009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
For a long time, white adipocytes were thought to function as lipid storages due to the sizeable unilocular lipid droplet that occupies most of their space. However, recent discoveries have highlighted the critical role of white adipocytes in maintaining energy homeostasis and contributing to obesity and related metabolic diseases. These physiological and pathological functions depend heavily on the mitochondria that reside in white adipocytes. This article aims to provide an up-to-date overview of the recent research on the function and dysfunction of white adipocyte mitochondria. After briefly summarizing the fundamental aspects of mitochondrial biology, the article describes the protective role of functional mitochondria in white adipocyte and white adipose tissue health and various roles of dysfunctional mitochondria in unhealthy white adipocytes and obesity. Finally, the article emphasizes the importance of enhancing mitochondrial quantity and quality as a therapeutic avenue to correct mitochondrial dysfunction, promote white adipocyte browning, and ultimately improve obesity and its associated metabolic diseases. © 2024 American Physiological Society. Compr Physiol 14:5581-5640, 2024.
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Affiliation(s)
- Fenfen Wang
- Department of Anesthesiology, Critical Care, and Pain Medicine, Center for Perioperative Medicine, McGovern Medical School, UT Health Science Center at Houston, Houston, Texas, USA
| | - Phu M Huynh
- Department of Anesthesiology, Critical Care, and Pain Medicine, Center for Perioperative Medicine, McGovern Medical School, UT Health Science Center at Houston, Houston, Texas, USA
| | - Yu A An
- Department of Anesthesiology, Critical Care, and Pain Medicine, Center for Perioperative Medicine, McGovern Medical School, UT Health Science Center at Houston, Houston, Texas, USA
- Center for Metabolic and Degenerative Diseases, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, McGovern Medical School, UT Health Science Center at Houston, Houston, Texas, USA
- Department of Biochemistry and Molecular Biology, McGovern Medical School, UT Health Science Center at Houston, Houston, Texas, USA
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2
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Zhang Z, He Z, Wang X, Huang B, Zhang W, Sha Y, Pang W. A natural small molecule pinocembrin resists high-fat diet-induced obesity through GPR120-ERK1/2 pathway. J Nutr Biochem 2024; 135:109772. [PMID: 39313008 DOI: 10.1016/j.jnutbio.2024.109772] [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: 04/01/2024] [Revised: 09/16/2024] [Accepted: 09/19/2024] [Indexed: 09/25/2024]
Abstract
Obesity is a widely concerned health problem. Mobilizing white adipose tissue and reducing fat synthesis are considered as effective strategies in the treatment of obesity. Here, using Connectivity Map (CMap) approach, we identified the pinocembrin (PB), a natural flavonoid primarily found in propolis, as a potential anti-obesity drug. Therefore, high-fat-diet (HFD) mice were randomly divided into two groups and fed a HFD or HFD with PB in this study. In vivo experiments showed that supplementation of PB reduced the body weight gain and ameliorated insulin resistance in HFD-induced mice. More importantly, PB did not cause side effect through detecting the levels of alanine transaminase (ALT), aspartate aminotransferase (AST), creatinine (CRE) and blood urea nitrogen (BUN) in serum of mice. Additionally, PB reduced expansion of white adipose tissue with upregulation of genes related lipolysis and downregulation of genes related lipogenesis. Furthermore, in vitro experiments revealed that PB treatment dose-dependently inhibited lipid droplet formation with upregulation of genes related lipolysis and downregulation of genes related lipogenesis. Molecular docking analysis combined with cellular thermal shift assay (CETSA) suggested that PB has a high affinity to the G protein-coupled receptor 120 (GPR120). Meanwhile, we confirmed that PB efficiently inhibited adipogenic differentiation of preadipocytes by directly binding to GPR120 and subsequently activating the downstream phosphorylation extracellular regulated kinase 1/2 (ERK1/2). Collectively, PB exerted anti-obesity effect through GPR120-ERK1/2 signaling pathway, providing a novel and promising natural drug for the treatment of obesity.
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Affiliation(s)
- Ziyi Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Zhaozhao He
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Xinyi Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Boyu Huang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Wanrong Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Yiwen Sha
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Weijun Pang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
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3
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Ferdous MRU, Abdalla M, Yang M, Xiaoling L, Song Y. Berberine chloride (dual topoisomerase I and II inhibitor) modulate mitochondrial uncoupling protein (UCP1) in molecular docking and dynamic with in-vitro cytotoxic and mitochondrial ATP production. J Biomol Struct Dyn 2023; 41:1704-1714. [PMID: 35612892 DOI: 10.1080/07391102.2021.2024255] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Obesity initiates numerous diseases like cardiovascular, metabolic, and type 2 diabetes, and obesity is a vital cause of death worldwide. Plants are necessary to the source of life. Several drug compounds isolated from plants are called phytochemicals which are safe, effective drug moieties to treat several diseases. Berberine chloride is a dual topoisomerase I and II inhibitor, that exhibited potent antitumor activities against several malignancies. However, the effect of Berberine on mitochondria remains unknown. The focus of this study was to determine the role of Berberine on mitochondrial uncoupling protein (UCP1), ATP production, and cytotoxic effect of HEK293T cell at a time and dose-dependent manner analysis by CCK8 assay. The upregulation of mitochondrial UCP1 gene expression reduces adipocyte content by initiating thermogenesis. In this study, berberine chloride significantly up-regulates UCP1 gene expression in brown adipocytes. AT 10 µM concentration of Berberine 48 h treatment demonstrated significant cell death. The decreased level of ATP production leads to mitochondrial uncoupling. Initiate thermogenesis reducing fat droplets in adipocytes. The first time, we used molecular docking and dynamic of Berberine with UCP1 gene in this study and revealed therapeutic potential of Berberine via modulation of mitochondrial UCP1 gene. Further investigation will reveal new insight into mechanisms to treat metabolic-related diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Md Reyad-Ul Ferdous
- Department of Endocrinology and Metabolism, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,Department of Internal Medicine, Cheeloo College of Medicine Shandong University, Jinan, Shandong, China.,Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, China.,Shandong Institute of Endocrinology & Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong, China
| | - Mohnad Abdalla
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Pharmaceutics, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, PR China
| | - Mengjiao Yang
- Department of Endocrinology and Metabolism, Shandong Provincial Hospital, Shandong First Medical University, Shandong, China
| | - Li Xiaoling
- Department of Endocrinology and Metabolism, Shandong Provincial Hospital, Shandong First Medical University, Shandong, China
| | - Yongfeng Song
- Department of Endocrinology and Metabolism, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, China.,Shandong Institute of Endocrinology & Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong, China.,Department of Endocrinology and Metabolism, Shandong Provincial Hospital, Shandong First Medical University, Shandong, China
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Albayrak E, Akgol S, Turan RD, Uslu M, Kocabas F. BML-260 promotes the growth of cord blood and mobilized peripheral blood hematopoietic stem and progenitor cells with improved reconstitution ability. J Cell Biochem 2022; 123:2009-2029. [PMID: 36070493 DOI: 10.1002/jcb.30324] [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: 05/31/2022] [Revised: 07/08/2022] [Accepted: 08/22/2022] [Indexed: 12/24/2022]
Abstract
Hematopoietic stem cells (HSCs), which are multipotent and have the ability to self-renew, are frequently used in the treatment of hematological diseases and cancer. Small molecules that target HSC quiescence regulators could be used for ex vivo expansion of both mobilized peripheral blood (mPB) and umbilical cord blood (UCB) hematopoietic stem and progenitor cells (HSPC). We identified and investigated 35 small molecules that target HSC quiescence factors. We looked at how they affected HSC activity, such as expansion, quiescence, multilineage capacity, cycling ability, metabolism, cytotoxicity, and genotoxicity. A transplantation study was carried out on immunocompromised mice to assess the expanded cells' repopulation and engraftment abilities. 4-[(5Z)-5-benzylidene-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]benzoic acid (BML)-260 and tosyl-l-arginine methyl ester (TAME) significantly increased both mPB and UCB-HSPC content and activated HSC re-entry into the cell cycle. The improved multilineage capacity was confirmed by the colony forming unit (CFU) assay. Furthermore, gene expression analysis revealed that BML-260 and TAME molecules aided HSC expansion by modulating cell cycle kinetics, such as p27, SKP2, and CDH1. In addition to these in vitro findings, we discovered that BML-260-expanded HSCs had a high hematopoietic reconstitution capacity with increased immune cell content after xenotransplantation into immunocompromised mice. In addition to the BML-260 molecule, a comparison study of serum-containing and serum-free chemically defined media, including various supplements, was performed. These in vitro and xenotransplantation results show that BML-260 molecules can be used for human HSC expansion and regulation of function. Furthermore, the medium composition discovered may be a novel platform for human HSPC expansion that could be used in clinical trials.
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Affiliation(s)
- Esra Albayrak
- Center of Stem Cell Research and Application, 19 Mayıs University, Samsun, Turkey.,Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Sezer Akgol
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Raife Dilek Turan
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Merve Uslu
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey.,Johns Hopkins All Children's Hospital, St. Petersburg, Florida, USA
| | - Fatih Kocabas
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
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Single-cell sequencing unveils key contributions of immune cell populations in cancer-associated adipose wasting. Cell Discov 2022; 8:122. [PMCID: PMC9663454 DOI: 10.1038/s41421-022-00466-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
AbstractAdipose tissue loss seen with cancer-associated cachexia (CAC) may functionally drive cachexia development. Using single-cell transcriptomics, we unveil a large-scale comprehensive cellular census of the stromal vascular fraction of white adipose tissues from patients with or without CAC. We report depot- and disease-specific clusters and developmental trajectories of adipose progenitors and immune cells. In adipose tissues with CAC, clear pro-inflammatory transitions were discovered in adipose progenitors, macrophages and CD8+ T cells, with dramatically remodeled cell interactome among these cells, implicating a synergistic effect in promoting tissue inflammation. Remarkably, activated CD8+ T cells contributed specifically to increased IFNG expression in adipose tissues from cachexia patients, and displayed a significant pro-catabolic effect on adipocytes in vitro; whereas macrophage depletion resulted in significantly rescued adipose catabolism and alleviated cachexia in a CAC animal model. Taken together, these results unveil causative mechanisms underlying the chronical inflammation and adipose wasting in CAC.
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Reyad-ul-Ferdous M, Song Y. Histone deacetylase (HDAC) inhibitor Curcumin upregulates mitochondrial uncoupling protein1 (UCP1) and mitochondrial function in brown adipocytes, in-Silico study and screening natural drug library. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2022.101571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Reyad-ul-Ferdous M, Song Y. Baicalein modulates mitochondrial function by upregulating mitochondrial uncoupling protein-1 (UCP1) expression in brown adipocytes, cytotoxicity, and computational studies. Int J Biol Macromol 2022; 222:1963-1973. [DOI: 10.1016/j.ijbiomac.2022.09.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022]
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Glycyrrhizin (Glycyrrhizic Acid) HMGB1 (high mobility group box 1) inhibitor upregulate mitochondrial function in adipocyte, cell viability and in-silico Study. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2022.101454] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Ding Z, Sun D, Han J, Shen L, Yang F, Sah S, Sui X, Wu G. Novel noncoding RNA CircPTK2 regulates lipolysis and adipogenesis in cachexia. Mol Metab 2021; 53:101310. [PMID: 34311131 PMCID: PMC8365522 DOI: 10.1016/j.molmet.2021.101310] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/08/2021] [Accepted: 07/20/2021] [Indexed: 01/08/2023] Open
Abstract
Objective Cancer-associated cachexia is a devastating pathological disorder characterized by skeletal muscle wasting and fat storage depletion. Circular RNA, a newly discovered class of noncoding RNAs with important roles in regulating lipid metabolism, has not been fully understood in the pathology of cachexia. We aimed to identify circular RNAs that are upregulated in adipose tissues from cachectic patients and explore their function and mechanism in lipid metabolism. Methods Whole transcriptome RNA sequencing was used to screen for differentially expressed circRNAs. Quantitative reverse transcription PCR was applied to detect the expression level of circPTK2 in adipose tissues. The diagnostic value of circPTK2 was evaluated in adipose tissues from patients with and without cachexia. Then, function experiments in vitro and in vivo were performed to evaluate the effects of circPTK2 on lipolysis and adipogenesis. Mechanistically, luciferase reporter assay, RNA immunoprecipitation, and fluorescent in situ hybridization were performed to confirm the interaction between circPTK2 and miR-182-5p in adipocytes. Results We detected 66 differentially expressed circular RNA candidates and proved that circPTK2 was upregulated in adipose tissues from cachectic patients. Then we identified that circPTK2 was closely related to the pathological process of cachexia and could be used as a diagnostic marker. Mechanistically, circPTK2 bound competitively to miR-182-5p and abrogated the suppression on its target gene JAZF1, which finally led to promotion of lipolysis and inhibition of adipogenesis. In vivo experiments demonstrated that overexpression of circPTK2 inhibited adipogenesis and enhanced lipolysis. Conclusions Our findings reveal the novel role of circPTK2 in promoting lipolysis and reducing adipogenesis via a ceRNA mechanism and provide a potential diagnostic biomarker and therapeutic target for cancer-associated cachexia. A novel noncoding RNA termed circPTK2 was highly expressed in adipose tissues of patients with cancer-associated cachexia. CircPTK2 was proven to be a potential diagnostic biomarker for cancer-associated cachexia. CircPTK2 induced lipolysis and suppressed adipogenesis by sponging miR-182-5p to regulate JAZF1 expression. A recombinant adeno-associated virus containing tissue-specific promoter was constructed and utilized in the animal experiment.
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Affiliation(s)
- Zuoyou Ding
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Diya Sun
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Jun Han
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China.
| | - Lei Shen
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Fan Yang
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Szechun Sah
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Xiangyu Sui
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China
| | - Guohao Wu
- Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, People's Republic of China.
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Yao Y, Xia Z, Cheng F, Jang Q, He J, Pan C, Zhang L, Ye Y, Wang Y, Chen S, Su D, Su X, Cheng L, Shi G, Dai L, Deng H. Human placental mesenchymal stem cells ameliorate liver fibrosis in mice by upregulation of Caveolin1 in hepatic stellate cells. Stem Cell Res Ther 2021; 12:294. [PMID: 34016164 PMCID: PMC8139101 DOI: 10.1186/s13287-021-02358-x] [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: 12/31/2020] [Accepted: 04/26/2021] [Indexed: 02/08/2023] Open
Abstract
Background Liver fibrosis (LF) is a common pathological process characterized by the activation of hepatic stellate cells (HSCs) and accumulation of extracellular matrix. Severe LF causes cirrhosis and even liver failure, a major cause of morbidity and mortality worldwide. Transplantation of human placental mesenchymal stem cells (hPMSCs) has been considered as an alternative therapy. However, the underlying mechanisms and the appropriate time window for hPMSC transplantation are not well understood. Methods We established mouse models of CCl4-injured LF and administered hPMSCs at different stages of LF once a week for 2 weeks. The therapeutic effect of hPMSCs on LF was investigated, according to histopathological and blood biochemical analyses. In vitro, the effect of hPMSCs and the secretomes of hPMSCs on the inhibition of activated HSCs was assessed. RNA sequencing (RNA-seq) analysis, real-time PCR array, and western blot were performed to explore possible signaling pathways involved in treatment of LF with hPMSCs. Results hPMSC treatment notably alleviates experimental hepatic fibrosis, restores liver function, and inhibits inflammation. Furthermore, the therapeutic effect of hPMSCs against mild-to-moderate LF was significantly greater than against severe LF. In vitro, we observed that the hPMSCs as well as the secretomes of hPMSCs were able to decrease the activation of HSCs. Mechanistic dissection studies showed that hPMSC treatment downregulated the expression of fibrosis-related genes, and this was accompanied by the upregulation of Caveolin-1 (Cav1) (p < 0.001). This suggested that the amelioration of LF occurred partly due to the restoration of Cav1 expression in activated HSCs. Upregulation of Cav1 can inhibit the TGF-/Smad signaling pathway, mainly by reducing Smad2 phosphorylation, resulting in the inhibition of activated HSCs, whereas this effect could be abated if Cav1 was silenced in advance by siRNAs. Conclusions Our findings suggest that hPMSCs could provide multifaceted therapeutic benefits for the treatment of LF, and the TGF-/Cav1 pathway might act as a therapeutic target for hPMSCs in the treatment of LF. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02358-x.
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Affiliation(s)
- Yunqi Yao
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Zhemin Xia
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Fuyi Cheng
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Qingyuan Jang
- Department of Obstetrics, Sichuan Provincial Hospital for Women and Children, Chengdu, P.R. China
| | - Jiao He
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Cheng Pan
- Department of Plastic and Burn Surgery, West China Hospital, Chengdu, P.R. China
| | - Lin Zhang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Yixin Ye
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Yuan Wang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Shuang Chen
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Dongsheng Su
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Xiaolan Su
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Lin Cheng
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Gang Shi
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Lei Dai
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China
| | - Hongxin Deng
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Ke-yuan Road 4, No. 1, Gao-peng Street, Chengdu, 610041, Sichuan, P.R. China.
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11
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Abstract
We present a detailed protocol for gene editing in adipocytes using the CRISPR-Cas technology. This protocol describes sgRNA design, preparation of lentiCRISPR-sgRNA vectors, functional validation of sgRNAs, preparation of lentiviruses, and lentiviruses transduction in adipocytes. Moreover, an optimized method of gene editing using the lentiCRISPRv2 vector expressing two sgRNAs targeting two different genes has also been described. For complete details on the use and execution of this protocol, please refer to Qiu et al. (2020).
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Affiliation(s)
- Yan Qiu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Qiurong Ding
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, P.R. China
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12
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Qiu Y, Yang Y, Wei Y, Liu X, Feng Z, Zeng X, Chen Y, Liu Y, Zhao Y, Chen L, Luo L, Ding Q. Glyburide Regulates UCP1 Expression in Adipocytes Independent of K ATP Channel Blockade. iScience 2020; 23:101446. [PMID: 32829287 PMCID: PMC7452185 DOI: 10.1016/j.isci.2020.101446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/08/2020] [Accepted: 08/06/2020] [Indexed: 12/12/2022] Open
Abstract
Identification of safe and effective compounds to increase or activate UCP1 expression in brown or white adipocytes remains a potent therapeutic strategy to combat obesity. Here we reported that, glyburide, one of the FDA-approved drugs currently used to treat type 2 diabetes, can significantly enhance UCP1 expression in both brown and white adipocytes. Glyburide-fed mice exhibited a clear resistance to high-fat diet-induced obesity, reduced blood triglyceride level, and increased UCP1 expression in brown adipose tissue. Moreover, in situ injection of glyburide to inguinal white adipose tissue remarkably enhanced UCP1 expression and increased thermogenesis. Further mechanistic studies indicated that the glyburide effect in UCP1 expression in adipocytes was KATP channel independent but may involve the regulation of the Ca2+-Calcineurin-NFAT signal pathway. Overall, our findings revealed the significant effects of glyburide in regulating UCP1 expression and thermogenesis in adipocytes, which can be potentially repurposed to treat obesity.
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Affiliation(s)
- Yan Qiu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Yuanyuan Yang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Yuda Wei
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Xiaojian Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Zhuanghui Feng
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Xuwen Zeng
- The Affiliated Stomatology Hospital of Tongji University, 399 Yanchang Road, Shanghai 200072, P. R. China
| | - Yanhao Chen
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Yan Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Yongxu Zhao
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Lanlan Chen
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Lijun Luo
- The Affiliated Stomatology Hospital of Tongji University, 399 Yanchang Road, Shanghai 200072, P. R. China
| | - Qiurong Ding
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P. R. China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, P. R. China
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Kim JH, Hong AR, Kim YH, Yoo H, Kang SW, Chang SE, Song Y. JNK suppresses melanogenesis by interfering with CREB-regulated transcription coactivator 3-dependent MITF expression. Am J Cancer Res 2020; 10:4017-4029. [PMID: 32226536 PMCID: PMC7086364 DOI: 10.7150/thno.41502] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 02/11/2020] [Indexed: 12/19/2022] Open
Abstract
Melanogenesis is a critical self-defense mechanism against ultraviolet radiation (UVR)-induced skin damage and carcinogenesis; however, dysregulation of melanin production and distribution causes skin-disfiguring pigmentary disorders. Melanogenesis is initiated by UVR-induced cAMP generation and ensuing activation of transcription factor CREB, which induces expression of the master melanogenic regulator MITF. Recent studies have demonstrated that recruitment of CRTCs to the CREB transcription complex is also required for UVR-stimulated melanogenesis. Therefore, modulation of cAMP-CRTC/CREB-MITF signaling may be a useful therapeutic strategy for UVR-associated skin pigmentary disorders. Methods: We identified the small-molecule Ro31-8220 from CREB/CRTC activity screening and examined its melanogenic activity in cultured mouse and human melanocytes as well as in human skin. Molecular mechanisms were deciphered by immunoblotting, RT-PCR, promoter assays, tyrosinase activity assays, immunofluorescent examination of CRTC3 subcellular localization, and shRNA-based knockdown. Results: Ro31-8220 suppressed basal and cAMP-stimulated melanin production in melanocytes and human melanocyte co-culture as well as UVR-stimulated melanin accumulation in human skin through downregulation of MITF and tyrosinase expression. Mechanistically, down regulation of MITF expression by Ro31-8220 was due to inhibition of transcriptional activity of CREB, which was resulted from phosphorylation-dependent blockade of nuclear translocation of CRTC3 via JNK activation. The selective JNK activator anisomycin also inhibited melanin production through phosphoinhibition of CRTC3, while JNK inhibition enhanced melanogenesis by stimulating CRTC3 dephosphorylation and nuclear migration. Conclusions: Melanogenesis can be enhanced or suppressed via pharmacological modulation of a previously unidentified JNK-CRTC/CREB-MITF signaling axis. As Ro31-8220 potently inhibits UVR-stimulated melanin accumulation in human skin, suggesting that small-molecule JNK-CRTC signaling modulators may provide therapeutic benefit for pigmentation disorders.
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