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Xing J, Zheng J, Cui S, Wang J, Wang Y, Li Y, Zhu J, Lin Y. Nuclear Receptor Subfamily 4 Group A Member 1 (NR4A1) Promotes the Adipogenesis of Intramuscular Preadipocytes through PI3K/AKT Pathway in Goats. Animals (Basel) 2024; 14:2051. [PMID: 39061513 PMCID: PMC11273901 DOI: 10.3390/ani14142051] [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: 06/11/2024] [Revised: 07/07/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
As a transcription factor, Nuclear Receptor Subfamily 4 Group A Member 1 (NR4A1) binds to downstream target genes to participate in cell proliferation and cell differentiation. We found that the NR4A1 reached the highest expression at 60 h after the differentiation of goat intramuscular preadipocytes. Overexpression of goat NR4A1 increased the number of intracellular lipid droplets and up-regulated the expression of adipocyte-differentiation-related marker genes including AP2, SREBP1, ACC, GPAM, and DGAT2, while the relative expression levels of Pref-1 and HSL were significantly decreased. On the contrary, after NR4A1 was knocked down by siRNA, the number of intracellular lipid droplets and the relative expression levels of LPL, CEBPα, CEBPβ, ACC, and DGAT2 were significantly decreased, and the relative expression levels of Pref-1 and HSL were significantly up-regulated. These results suggest that NR4A1 promotes the differentiation of goat intramuscular preadipocytes. Transcriptome sequencing was carried out after overexpression of goat NR4A1, and the KEGG enrichment analysis result showed that the most differentially expressed genes were related to adipocyte differentiation and were enriched in the PI3K-Akt signaling pathway. LY249002, an inhibitor of the PI3K-Akt signaling pathway, was introduced and decreased the number of intracellular lipid droplets, and the relative expression levels of C/EBPα, SREBP1, AP2, C/EBPβ, GPAM, ACC, DGAT1, DGAT2, and ATGL were decreased accordingly. The above results indicate that overexpression of goat NR4A1 may promote the differentiation of intramuscular preadipocytes through the PI3K-Akt signaling pathway.
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Affiliation(s)
- Jiani Xing
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
| | - Jianying Zheng
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
| | - Sheng Cui
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
| | - Jinling Wang
- College of Life Science and Biotechnology, Mianyang Teachers’ College, Mianyang 621000, China;
| | - Yong Wang
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
| | - Yanyan Li
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
| | - Jiangjiang Zhu
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
| | - Yaqiu Lin
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Southwest Minzu University, Chengdu 610041, China; (J.X.); (J.Z.); (S.C.); (Y.L.); (J.Z.)
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China
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Cai J, Huang J, Li D, Zhang X, Shi B, Liu Q, Fang C, Xu S, Zhang Z. Hippo-YAP/TAZ-ROS signaling axis regulates metaflammation induced by SelenoM deficiency in high-fat diet-derived obesity. J Adv Res 2024:S2090-1232(24)00229-7. [PMID: 38879122 DOI: 10.1016/j.jare.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/21/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
INTRODUCTION Metabolic inflammation (metaflammation) in obesity is primarily initiated by proinflammatory macrophage infiltration into adipose tissue. SelenoM contributes to the modulation of antioxidative stress and inflammation in multiple pathological processes; however, its roles in metaflammation and the proinflammatory macrophage (M1)-like state in adipose tissue have not been determined. OBJECTIVES We hypothesize that SelenoM could effectively regulate metaflammation via the Hippo-YAP/TAZ-ROS signaling axis in obesity derived from a high-fat diet. METHODS Morphological changes in adipose tissue were examined by hematoxylin-eosin (H&E) staining and fluorescence microscopy. The glucose tolerance test (GTT) and insulin tolerance test (ITT) were used to evaluate the impact of SelenoM deficiency on blood glucose levels. RNA-Seq analysis, LC-MS analysis, Mass spectrometry analysis and western blotting were performed to detect the levels of genes and proteins related to glycolipid metabolism in adipose tissue. RESULTS Herein, we evaluated the inflammatory features and metabolic microenvironment of mice with SelenoM-deficient adipose tissues by multi-omics analyses. The deletion of SelenoM resulted in glycolipid metabolic disturbances and insulin resistance, thereby accelerating weight gain, adiposity, and hyperglycemia. Mice lacking SelenoM in white adipocytes developed severe adipocyte hypertrophy via impaired lipolysis. SelenoM deficiency aggravated the generation of ROS by reducing equivalents (NADPH and glutathione) in adipocytes, thereby promoting inflammatory cytokine production and the M1-proinflammatory reaction, which was related to a change in nuclear factor kappa-B (NF-κB) levels in macrophages. Mechanistically, SelenoM deficiency promoted metaflammation via Hippo-YAP/TAZ-ROS-mediated transcriptional regulation by targeting large tumor suppressor 2 (LATS2). Moreover, supplementation with N-acetyl cysteine (NAC) to reduce excessive oxidative stress partially rescued adipocyte inflammatory responses and macrophage M1 activation. CONCLUSION Our data indicate that SelenoM ameliorates metaflammation mainly via the Hippo-YAP/TAZ-ROS signaling axis in obesity. The identification of SelenoM as a key regulator of metaflammation presents opportunities for the development of novel therapeutic interventions targeting adipose tissue dysfunction in obesity.
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Affiliation(s)
- Jingzeng Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Jiaqiang Huang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Di Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xintong Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Bendong Shi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Qiaohan Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Cheng Fang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, China.
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, China.
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Wang K, Yang J, An Y, Wang J, Tan S, Xu H, Dong Y. MST1/2 regulates fibro/adipogenic progenitor fate decisions in skeletal muscle regeneration. Stem Cell Reports 2024; 19:501-514. [PMID: 38552635 PMCID: PMC11096422 DOI: 10.1016/j.stemcr.2024.02.010] [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: 07/03/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 04/12/2024] Open
Abstract
Defective skeletal muscle regeneration is often accompanied by fibrosis. Fibroblast/adipose progenitors (FAPs) are important in these processes, however, the regulation of FAP fate decisions is unclear. Here, using inducible conditional knockout mice, we show that blocking mammalian Ste20-like kinases 1/2 (MST1/2) of FAPs prevented apoptosis and reduced interleukin-6 secretion in vivo and in vitro, which impaired myoblast proliferation and differentiation, as well as impaired muscle regeneration. Deletion of Mst1/2 increased co-localization of Yes-associated protein (YAP) with Smad2/3 in nuclei and promoted differentiation of FAPs toward myofibroblasts, resulting in excessive collagen deposition and skeletal muscle fibrosis. Meanwhile, inhibition of MST1/2 increased YAP/Transcriptional co-activator with PDZ-binding motif activation, which promoted activation of the WNT/β-catenin pathway and impaired the differentiation of FAPs toward adipocytes. These results reveal a new mechanism for MST1/2 action in disrupted skeletal muscle regeneration and fibrosis via regulation of FAP apoptosis and differentiation. MST1/2 is a potential therapeutic target for the treatment of some myopathies.
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Affiliation(s)
- Kezhi Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jingjing Yang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Yina An
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jing Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Shuyu Tan
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Hui Xu
- Department of Physical Education, China Agricultural University, Beijing 100193, China.
| | - Yanjun Dong
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
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Jia L, Tian H, Sun S, Hao X, Wen Y. EID3 inhibits the osteogenic differentiation of periodontal ligament stem cells and mediates the signal transduction of TAZ-EID3-AKT/MTOR/ERK. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119662. [PMID: 38216090 DOI: 10.1016/j.bbamcr.2024.119662] [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: 06/05/2023] [Revised: 12/16/2023] [Accepted: 01/03/2024] [Indexed: 01/14/2024]
Abstract
Exploring the molecular mechanisms of cell behaviors is beneficial for promoting periodontal ligament stem cell (PDLSC)-mediated tissue regeneration. This study intends to explore the regulatory effects of EID3 on cell proliferation, apoptosis, and osteogenic differentiation and to preliminarily explore the regulatory mechanism of EID3. Here, EID3 was overexpressed or knocked down in PDLSCs by recombinant lentivirus. Then, cell proliferation activity was analyzed by colony-forming assay, EdU assay, and cell cycle assay. Cell apoptosis was detected by flow cytometry. The osteo-differentiation potential was analyzed using ALP activity assay, ALP staining, alizarin red staining, and mRNA and protein assay of osteo-differentiation related genes. The results showed that when EID3 was knocked down, the proliferation activity and osteogenic differentiation potential of PDLSCs decreased, while they increased when EID3 was overexpressed. The cell apoptosis rate decreased in PDLSCs with EID3 knockdown but increased in PDLSCs with EID3 overexpression. Moreover, EID3 inhibited the transduction of the AKT/MTOR and ERK signaling pathway. In addition, TAZ negatively regulated the expression of EID3, and the overexpression of EID3 partially reversed the promotive effects of TAZ on the osteogenic differentiation of PDLSCs. Taken together, EID3 inhibits the proliferation and osteogenic differentiation while promoting the apoptosis of PDLSCs. EID3 inhibits the transduction of the AKT/MTOR and ERK signaling pathways and mediates the regulatory effect of TAZ on PDLSC osteogenic differentiation.
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Affiliation(s)
- Linglu Jia
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China
| | - Hui Tian
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Stomatology, Rizhao People's Hospital, Rizhao, Shandong, China
| | - Shaoqing Sun
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China
| | - Xingyao Hao
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China
| | - Yong Wen
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China.
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Huang R, Wang B, He J, Zhang Z, Xie R, Li S, Li Q, Tian C, Tuo Y, Zheng R, Chen W, Xiang M. Lian-Qu formula treats metabolic syndrome via reducing fat synthesis, insulin resistance and inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2023; 306:116060. [PMID: 36535333 DOI: 10.1016/j.jep.2022.116060] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Metabolic syndrome (MetS) is a pathological condition characterized by obesity, hyperglycemia, hypertension and hyperlipidemia that increases the risk of cardiovascular disease, type 2 diabetes and non-alcoholic fatty liver disease. The traditional Chinese medicine Lian-Qu formula (LQF) is modified from Xiaoxianxiong decoction, which has been used for coronary heart disease or metabolic disease in clinical for a long time. However, the pharmacological mechanism of LQF on MetS is unclear. AIM OF THE STUDY Here, we explored the actions of LQF on MetS via network pharmacology and validated the mechanism in the MetS mice. MATERIALS AND METHODS The chemical components of LQF were searched in the traditional Chinese medicine systems pharmacology database and the natural product activity & species source database. The related targets of MetS disease were gathered from genes cluster with literature profiles database. The protein-protein interaction network was constructed to obtain the key target genes. The Gene Ontology analysis and Kyoto Encyclopedia of Genes and Genomes pathway enrichment of the key targets were performed to predict the potential mechanisms of LQF action on MetS. And then, the high-fat diet-induced MetS mice were used to validate its therapeutic effect and molecular targets. Insulin tolerance test and oral glucose tolerance test were used to assess insulin sensitivity. Body weight and visceral fat index were measured to assess obesity. Liver metabolism was detected by H&E section, oil red O staining and untargeted lipid metabolomics experiments. Finally, the key targets of LQF action on MetS were verified by PCR and ELISA kits. RESULTS A total of 466 components in LQF were obtained, among which 71 were active. These components correspond to 74 targets associated with MetS. The predicted targets of LQF worked on MetS were AKT1, INSR, PPARs, FASN, LDLR, TNF, CRP, IL-6, IL-1β and so on. Furthermore, these targets were related to pathways in cellular response to lipid, inflammatory response, glucose transmembrane transport and insulin resistance. Finally, the animal experiments validated that LQF inhibited lipids accumulation by inhibiting the gene expression of FASN and increasing ADPN, and it relieved insulin resistance by increasing GLUT-4 expression. Moreover, LQF alleviated inflammation by reducing IL-6 and CRP levels. CONCLUSION LQF exerted anti-MetS effects through improving insulin sensitivity, ameliorating hyperlipidemia and obesity, reducing liver injury, and inhibiting inflammatory response.
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Affiliation(s)
- Rongrong Huang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Pharmacy, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Baotian Wang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jialuo He
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zijun Zhang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Xie
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Senlin Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cheng Tian
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yali Tuo
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Clinical Pharmacy, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ran Zheng
- National Engineering Research Center for Big Data Technology and System Services Computing Technology and System Lab, Cluster and Grid Computing Lab, School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Weihong Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ming Xiang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Never-in-Mitosis A-Related Kinase 8 (NEK8) Regulates Adipogenesis, Glucose Homeostasis, and Obesity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1947067. [PMID: 36506932 PMCID: PMC9729029 DOI: 10.1155/2022/1947067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 12/03/2022]
Abstract
Background Adipogenesis is a complex biological process and the leading main cause of obesity. We evaluated the role of never-in-mitosis A-related kinase 8 (NEK8) in adipocyte development and insulin sensitivity in the present study. Methods NEK8 expression was manipulated using a specific shRNA or the NEK8-full-length expressing recombinant plasmids. The interaction between NEK8 and Tafazzin (TAZ, an oncogenic transcriptional regulator) was examined by Co-immunoprecipitation (Co-IP) and confocal immunofluorescence staining. Western blot assay was performed to determine the protein expression. The in vivo role of NEK8 was explored in a mouse model of high-fat diet- (HFD-) induced insulin resistance. Results During adipogenesis, the expression of NEK8 was elevated while TAZ was downregulated. Overexpression of NEK8 promoted lipid accumulation and expression of markers for adipocyte differentiation. Mechanically, NEK8 interacted with TAZ and suppressed its expression in adipocytes. Functionally, lentiviral-mediated NEK8 inhibition ameliorates HFD-induced insulin resistance in adipocytes. Conclusion These findings suggest that NEK8 plays a critical role in adipocyte proliferation, providing novel insight into the link between NEK8 and type 2 diabetes- (T2DM-) related obesity.
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Luo S, He J, Huang S, Wang X, Su Y, Li Y, Chen Y, Yang G, Huang B, Guo S, Zhou L, Luo X. Emodin targeting the colonic metabolism via PPARγ alleviates UC by inhibiting facultative anaerobe. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 104:154106. [PMID: 35728384 DOI: 10.1016/j.phymed.2022.154106] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 04/01/2022] [Accepted: 04/14/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Emodin is an active ingredient of traditional Chinese medicine Rheum palmatum L. and Polygonum cuspidatum, which possesses anti-inflammatory and intestinal mucosal protection effects. Our previous study found that emodin significantly alleviated ulcerative colitis induced by sodium dextran sulfate (DSS). In this study, we found the underlying mechanism of emodin on ulcerative colitis (UC). PURPOSE We aimed to further explore the mechanism of emodin in the treatment of ulcerative colitis from the perspective of metabolism and intestinal flora. METHODS Ulcerative colitis was induced by 3% sodium dextran sulfate (DSS) on mice, and the mice were respectively treated with mesalazine, rosiglitazone, emodin, and emodin combined with GW9662 (PPARγ inhibitor) simultaneously. Weight changes, the disease activity index (DAI), colonic length, and pathologic changes in colon were used to evaluate the efficacy of emodin. LC-MS/MS was performed for metabolomics analysis of colon. In addition, intestinal flora was assessed using 16S rDNA sequencing. A vector-based short hairpin RNA (shRNA) method was used to silence PPARγ gene expression in Caco-2 cells. RESULTS Emodin binds to the active site of PPARγ protein and forms hydrogen bond interaction with ARG288 and CYS285 amino acids. Furthermore, Emodin significantly promotes the protein expression of PPARγ, while inhibiting iNOS and NF-kB p65 in UC mice, however, this effect is hardly shown when it is combined with GW9662 (the inhibitor of PPARγ). Meanwhile, emodin suppresses the expression of iNOS in Caco-2 cells induced with IFNγ and IL-22, but has no effect on its expression in shPPARγ-Caco-2 cells. In addition, through activating PPARγ signal pathway, emodin is capable of regulating colonic metabolism including oxidative phosphorylation and citrulline metabolism and effecting luminal availability of oxygen and nitrate. This promotes the recovery of anoxic environment of colon epithelial cells, which strains the growth and expansion of Enterobacteriaceae. CONCLUSION The mechanism of Emodin in the treatment of ulcerative colitis relies on its regulation of PPARγ signal pathway, which could modulate colonic metabolism and restore intestinal homeostasis.
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Affiliation(s)
- Shuang Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China; The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, China
| | - Jinrong He
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Shaowei Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Xiaojing Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Yulin Su
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Yanyang Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Yanping Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Guanghua Yang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Bin Huang
- The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, China
| | - Shaoju Guo
- The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, China
| | - Lian Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China.
| | - Xia Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China.
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Guo Q, Guo Q, Xiao Y, Li C, Huang Y, Luo X. Regulation of bone marrow mesenchymal stem cell fate by long non-coding RNA. Bone 2020; 141:115617. [PMID: 32853852 DOI: 10.1016/j.bone.2020.115617] [Citation(s) in RCA: 20] [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: 05/19/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 12/20/2022]
Abstract
Bone mesenchymal stem cells (BMSCs) are progenitor cells isolated from bone marrow, which keep potential to differentiate into several kinds of cells including osteoblasts and adipocytes. A dynamic mutual regulation exists between osteogenesis and adipogenesis processes. Long non-coding RNA (lncRNA) performs diverse functions in biological activities including regulation of BMSCs commitment. Evidence has shown that lncRNA regulates key signaling pathways including TGFβ/BMP, Wnt and Notch pathways, and several transcription factors in BMSCs differention. Dysregulation of lncRNA in BMSCs leads to disruption of osteo-adipogenesis difffrentiation and results in impairment of bone homeostasis. In this review, we focus on the role of lncRNA in several critical signaling pathways that involved in regulation of osteo-adipogenesis of BMSC and prospects the potential clinical application of lncRNA.
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Affiliation(s)
- Qiaoyue Guo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, 87# Xiangya Road, Changsha, Hunan, PR China
| | - Qi Guo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, 87# Xiangya Road, Changsha, Hunan, PR China
| | - Ye Xiao
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, 87# Xiangya Road, Changsha, Hunan, PR China
| | - Changjun Li
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, 87# Xiangya Road, Changsha, Hunan, PR China
| | - Yan Huang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, 87# Xiangya Road, Changsha, Hunan, PR China
| | - Xianghang Luo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, 87# Xiangya Road, Changsha, Hunan, PR China.
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A long non-coding RNA specifically expressed in early embryos programs the metabolic balance in adult mice. Biochim Biophys Acta Mol Basis Dis 2020; 1867:165988. [PMID: 33059001 DOI: 10.1016/j.bbadis.2020.165988] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/18/2020] [Accepted: 10/07/2020] [Indexed: 12/15/2022]
Abstract
Many Long non-coding RNAs (lncRNAs) are specifically expressed in early embryos, but the physiological functions of most of them remain largely unknown. Here, we show that deficiency of lncenc1, an early embryo-specific lncRNA, altering glucose and lipid balance in adult mice. Newly weaned lncenc1-deficient mice prefer to use lipids as a fuel source. When mice were fed a normal chow diet (NCD), glucose intolerance and insulin resistance were observed in adult lncenc1-deficient mice. Under high-fat diet (HFD) conditions, however, lncenc1-deficient mice became healthier and could resist food-induced obesity and metabolic disturbances. Furthermore, AKT/mTOR-regulated lipogenesis in liver was reduced in lncenc1-deficient mice fed a HFD. MEFs lacking lncenc1 showed impaired glycolysis and lipogenesis, suggesting that the metabolic defects may already exist in embryos. Our study demonstrated the essential roles of lncenc1 in adult metabolism, providing experimental data that support the "fetal origin" of adult metabolic disorders.
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