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Wang W, Abdelrahman M, Yang Y, Lv H, Yang L. RNA Sequencing Reveals the Inhibitory Effect of High Levels of Arachidonic Acid and Linoleic Acid on C2C12 Differentiation and Myogenic Biomarkers. Nutrients 2024; 16:706. [PMID: 38474834 DOI: 10.3390/nu16050706] [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: 12/31/2023] [Revised: 02/18/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Over the past three decades, studies have shown that consuming polyunsaturated fatty acids (PUFAs) can enhance animal and human health and welfare through biological, biochemical, pathological, and pharmacological impacts. Furthermore, omega-6 plays key roles in the cardiopulmonary system, including promoting airway relaxation and inhibiting atherosclerosis and hypertension. However, findings from investigations of the effects of omega-6 fatty acids on molecular and cellular activity and discussions on their influence on biomarkers are still unclear. Therefore, the present study aimed to evaluate omega-6 fatty acids, the arachidonic acid (AA), and linoleic acid (LA) effects on C2C12 proliferation, myogenesis morphology, and relative myogenic biomarker expression through the Wnt pathway. C2C12 cells were cultured with and without 25, 50, 100, and 150 µM of LA and AA and then subjected to CCK8, Giemsa staining, RT qPCR, Western blotting, and RNA Sequencing. The CCK8 Assay results showed that 25, 50, 100, and 150 µM LA significantly decreased the viability after 72 h for 25, 50, 100, and 150 µM concentrations. Also, AA supplementation decreased cell viability after 24 h for 150 µM, 48 h for 150 µM, and 72 h for 50, 100, and 150 µM concentrations. Moreover, the LA and AA inhibitory effects noticed through Gimesa staining were morphological changes during myoblast differentiation. Both LA and AA showed inhibiting IGF1, Cola1, Col6a2, Col6a1, Itga10, Itga11, SFRP2, DAAM2, and NKD2 effects; however, the depressing effect was higher for AA compared to LA. The previous results were confirmed through Western blotting, which showed that 50 µM LA and AA significantly reduced DAAM2 and SFRP2 protein levels compared to the control. Regarding RNA sequencing results, LA and AA increased the number of differentially expressed (DE) Mt-rRNA and snoRNA; however, the numbers of lncRNA detected decreased compared to the control. Our findings demonstrate that high and moderate LA and AA concentrations reduce primary myoblast proliferation and differentiation. Also, they highlight novel biomarkers and regulatory factors to improve our understanding of how the nutrition of fatty acids can control and modulate the myogenesis and differentiation process through different biomarker families.
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Affiliation(s)
- Wei Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agriculture University, Wuhan 430070, China
| | - Mohamed Abdelrahman
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agriculture University, Wuhan 430070, China
- Animal Production Department, Faculty of Agriculture, Assuit University, Asyut 71515, Egypt
| | - Ying Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agriculture University, Wuhan 430070, China
| | - Haimiao Lv
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agriculture University, Wuhan 430070, China
| | - Liguo Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agriculture University, Wuhan 430070, China
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Ahmed A, Afzaal M, Ali SW, Muzammil HS, Masood A, Saleem MA, Saeed F, Hussain M, Rasheed A, Al Jbawi E. Effect of vegan diet (VD) on sports performance: a mechanistic review of metabolic cascades. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2022. [DOI: 10.1080/10942912.2022.2120495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Aftab Ahmed
- Department of Nutritional Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Department of Food Sciences, Government College University, Faisalabad, Pakistan
| | - Shinawar Waseem Ali
- Faculty of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Hafiz Shehzad Muzammil
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Ammar Masood
- Department of Nutritional Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Awais Saleem
- Department of Nutritional Sciences, Government College University, Faisalabad, Pakistan
| | - Farhan Saeed
- Department of Food Sciences, Government College University, Faisalabad, Pakistan
| | - Muzzamal Hussain
- Department of Food Sciences, Government College University, Faisalabad, Pakistan
| | - Amara Rasheed
- Department of Food Sciences, Government College University, Faisalabad, Pakistan
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Jing Y, Mu F, Xing X, Huang J, Lou M, Xu H, Ning B, Lou Y, Gao Z, Luo H, Yan X, Li H, Wang N. Knockout and Restoration Reveal Differential Functional Roles of PPARγ1 and PPARγ2 in Chicken Adipogenesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:14959-14973. [PMID: 36383077 DOI: 10.1021/acs.jafc.2c05549] [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] [Indexed: 06/16/2023]
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) is the master regulator of adipogenesis and is expressed as two isoforms, PPARγ1 and PPARγ2. Our previous lentiviral overexpression study showed that PPARγ1 and PPARγ2 differentially regulated proliferation, differentiation, and apoptosis of the immortalized chicken preadipocyte cell line (ICP2). However, we cannot rule out the possibility that the endogenous expression of PPARγ isoforms may compromise our findings. In this study, using the dual sgRNA-directed CRISPR/Cas9 system, we generated PPARγ (PPARγ-/-) and PPARγ2-specific knockout (PPARγ2-/-) ICP2 cell lines and investigated the differences in proliferation and differentiation among PPARγ-/-, PPARγ2-/-, and wild-type ICP2 cells. EdU proliferation assay showed that both PPARγ2-specific and PPARγ knockouts significantly increased the proliferation rates. Consistently, real-time RT-PCR analysis showed that both PPARγ2-specific and PPARγ knockouts significantly upregulated the expression of proliferation marker genes PCNA and cyclinD1. FACS analysis revealed that PPARγ knockout significantly increased the number of cells accumulating in the S phase and decreased the number of cells accumulating in the G1/G0 phase. Oil Red O staining and gene expression analysis showed both PPARγ2-specific and PPARγ knockouts dramatically reduced capacity for adipogenic differentiation. To corroborate our previous findings, PPARγ1 and PPARγ2 expression were restored in PPARγ-/- cells by using the lentiviruses expressing chicken PPARγ1 (LV-PPARγ1) and PPARγ2 (LV-PPARγ2), respectively. Subsequent assays showed that restoration of expression of either PPARγ1 or PPARγ2 suppressed proliferation and stimulated differentiation of the PPARγ-/- cells. By comparison, PPARγ2 had stronger anti-proliferative and pro-adipogenic effects than PPARγ1. To understand the molecular mechanism underlying their differential effects on differentiation of the PPARγ-/- cells, we performed RNA-seq in the PPARγ-/- cells in which individual PPARγ isoform expression was restored at 72 h of differentiation. Transcriptomic analysis revealed that restoring PPARγ1 expression caused far more differentially expressed genes (DEGs) than restoring PPARγ2 expression. GO and KEGG pathway enrichment analyses indicated that PPARγ1 and PPARγ2 had distinct and overlapping functions in adipogenesis. Taken together, our results clearly indicate that PPARγ1 and PPARγ2 differentially impact chicken adipogenesis.
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Affiliation(s)
- Yang Jing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Fang Mu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Xiaoxu Xing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Jiaxin Huang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Ming Lou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Haidong Xu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Bolin Ning
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Yuqi Lou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Zhihui Gao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Haoyu Luo
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Xiaohong Yan
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Hui Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Ning Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
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Wang S, Liu T, Sun L, Du H, Xu Z, Li R, Yu Y, Mao Y, Shi K. Menin regulates lipid deposition in mouse hepatocytes via interacting with transcription factor FoxO1. Mol Cell Biochem 2022; 477:1555-1568. [PMID: 35182330 DOI: 10.1007/s11010-022-04392-6] [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: 07/31/2021] [Accepted: 02/10/2022] [Indexed: 11/25/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is rapidly being recognized as the leading cause of chronic liver disease worldwide. Men1, encoding protein of menin, is a key causative gene of multiple endocrine neoplasia type 1 syndrome including pancreatic tumor. It is known that insulin that secretes by endocrine tissue pancreatic islets plays a critical role in hepatic metabolism. Mouse model of hemizygous deletion of Men1 was shown to have severe hepatic metabolism disorders. However, the molecular function of menin on lipid deposition in hepatocytes needs to be further studied. Transcriptome sequencing does show that expression suppression of Men1 in mouse hepatocytes widely affect signaling pathways involved in hepatic metabolism, such as fatty acid metabolism, insulin response, glucose metabolism and inflammation. Further molecular studies indicates that menin overexpression inhibits expressions of the fat synthesis genes Srebp-1c, Fas, and Acc1, the fat differentiation genes Pparγ1 and Pparγ2, and the fat transport gene Cd36, thereby inhibiting the fat accumulation in hepatocytes. The biological process of menin regulating hepatic lipid metabolism was accomplished by interacting with the transcription factor FoxO1, which is also found to be critical for lipid metabolism. Moreover, menin responds to insulin in hepatocytes and mediates its regulatory effect on hepatic metabolism. Our findings suggest that menin is a crucial mediation factor in regulating the hepatic fat deposition, suggesting it could be a potential important therapeutic target for NAFLD.
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Affiliation(s)
- Shengxuan Wang
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China
| | - Tingjun Liu
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China
| | - Lili Sun
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China
| | - Hongxia Du
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China
| | - Zhongjin Xu
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China
| | - Ranran Li
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China
| | - Ying Yu
- National Engineering Laboratory for Animal Breeding, MOA Key Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, China Agricultural University, Beijing, 100093, China
| | - Yongjiang Mao
- Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu Province, Yangzhou University, Yangzhou, 225009, China
| | - Kerong Shi
- College of Animal Science and Technology, Shandong Key Laboratory of Animal Bioengineering and Disease Prevention, Shandong Agricultural University, No. 61 Daizong Street, Taian, Shandong, 271018, China.
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Zhao L, Zhou L, Hao X, Wang L, Han F, Liu L, Duan X, Guo F, He J, Liu N. Identification and Characterization of Circular RNAs in Association With the Deposition of Intramuscular Fat in Aohan Fine-Wool Sheep. Front Genet 2021; 12:759747. [PMID: 34938314 PMCID: PMC8685527 DOI: 10.3389/fgene.2021.759747] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/02/2021] [Indexed: 01/20/2023] Open
Abstract
Aohan fine-wool sheep (AFWS) is a high-quality fine-wool sheep breed that supplies wool and meat. Research is needed on the molecular mechanism behind intramuscular fat (IMF) deposition that greatly improves mutton quality. The widely expressed non-coding RNA is physiologically used in roles such as competitive endogenous RNA (ceRNA) that includes circular RNAs (circRNAs). Although circRNAs were studied in many fields, little research was devoted to IMF in sheep. We used the longissimus dorsi muscle of 2 and 12-month-old AWFS as research material to identify circRNAs related to IMF deposition in these sheep by RNA-seq screening for differentially expressed circRNAs in the two age groups. A total of 11,565 candidate circRNAs were identified, of which the 104 differentially expressed circRNAs in the two age groups were analyzed. Enrichment analysis was performed using Gene Ontology and the Kyoto Encyclopedia of Genes and Genomes. The enriched pathways included lipid transport (GO:0006869), negative regulation of canonical Wnt signaling pathway (GO:0090090), fat digestion and absorption (ko04975), and sphingolipid metabolism (ko00600). The differentially expressed circRNAs included ciRNA455, circRNA9086, circRNA7445, circRNA4557, and others. The source genes involved in these pathways might regulate IMF deposition. We used the TargetScan and miRanda software for interaction analysis, and a network diagram of circRNA-miRNA interactions was created. CircRNA455-miR-127, circRNA455-miR-29a, circRNA455-miR-103, circRNA4557-mir149-5p, and circRNA2440-mir-23a might be involved in the IMF deposition process. The targeting relationship of circRNA4557-miR-149-5p was verified by a dual-luciferase reporter assay. The RT-qPCR results of seven randomly selected circRNAs were consistent with the sequencing results. This study provides additional information on circRNA regulation of IMF deposition in AFWS and is a useful resource for future research on this sheep breed.
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Affiliation(s)
- Le Zhao
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Lisheng Zhou
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Xiaojing Hao
- Qingdao Animal Husbandry and Veterinary Research Institute, Qingdao, China
| | - Lei Wang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Fuhui Han
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Lirong Liu
- China Animal Health and Epidemiology Center, Qingdao, China
| | - Xinming Duan
- Nongfayuan Zhejiang Agricultural Development Co. Ltd., Huzhou, China
| | - Feng Guo
- Tongliao Animal Agriculture Development Service Center, Tongliao, China
| | - Jianning He
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Nan Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
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Kirk AB, Michelsen-Correa S, Rosen C, Martin CF, Blumberg B. PFAS and Potential Adverse Effects on Bone and Adipose Tissue Through Interactions With PPARγ. Endocrinology 2021; 162:6364127. [PMID: 34480479 PMCID: PMC9034324 DOI: 10.1210/endocr/bqab194] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 01/06/2023]
Abstract
Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a widely dispersed, broad class of synthetic chemicals with diverse biological effects, including effects on adipose and bone differentiation. PFAS most commonly occur as mixtures and only rarely, if ever, as single environmental contaminants. This poses significant regulatory questions and a pronounced need for chemical risk assessments, analytical methods, and technological solutions to reduce the risk to public and environmental health. The effects of PFAS on biological systems may be complex. Each may have several molecular targets initiating multiple biochemical events leading to a number of different adverse outcomes. An exposure to mixtures or coexposures of PFAS complicates the picture further. This review illustrates how PFAS target peroxisome proliferator-activated receptors. Additionally, we describe how such activation leads to changes in cell differentiation and bone development that contributes to metabolic disorder and bone weakness. This discussion sheds light on the importance of seemingly modest outcomes observed in test animals and highlights why the most sensitive end points identified in some chemical risk assessments are significant from a public health perspective.
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Affiliation(s)
- Andrea B Kirk
- Correspondence: Andrea Kirk, PhD, US EPA Headquarters, William Jefferson Clinton Bldg, 1200 Pennsylvania Ave NW, Mail Code 5201P, Washington, DC 20460, USA.
| | - Stephani Michelsen-Correa
- EPA Office of Chemical Safety and Pollution Prevention, Biopesticides and Pollution Prevention Division, Washington, District of Columbia 20460, USA
| | - Cliff Rosen
- Tufts University School of Medicine, Boston, Massachusetts 02111, USA
| | | | - Bruce Blumberg
- University of California, Irvine, Irvine, California 92697, USA
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Pohl A, Schünemann F, Bersiner K, Gehlert S. The Impact of Vegan and Vegetarian Diets on Physical Performance and Molecular Signaling in Skeletal Muscle. Nutrients 2021; 13:3884. [PMID: 34836139 PMCID: PMC8623732 DOI: 10.3390/nu13113884] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/12/2022] Open
Abstract
Muscular adaptations can be triggered by exercise and diet. As vegan and vegetarian diets differ in nutrient composition compared to an omnivorous diet, a change in dietary regimen might alter physiological responses to physical exercise and influence physical performance. Mitochondria abundance, muscle capillary density, hemoglobin concentration, endothelial function, functional heart morphology and availability of carbohydrates affect endurance performance and can be influenced by diet. Based on these factors, a vegan and vegetarian diet possesses potentially advantageous properties for endurance performance. Properties of the contractile elements, muscle protein synthesis, the neuromuscular system and phosphagen availability affect strength performance and can also be influenced by diet. However, a vegan and vegetarian diet possesses potentially disadvantageous properties for strength performance. Current research has failed to demonstrate consistent differences of performance between diets but a trend towards improved performance after vegetarian and vegan diets for both endurance and strength exercise has been shown. Importantly, diet alters molecular signaling via leucine, creatine, DHA and EPA that directly modulates skeletal muscle adaptation. By changing the gut microbiome, diet can modulate signaling through the production of SFCA.
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Affiliation(s)
- Alexander Pohl
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
| | - Frederik Schünemann
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
| | - Käthe Bersiner
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
| | - Sebastian Gehlert
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
- Department for Molecular and Cellular Sports Medicine, German Sports University Cologne, 50933 Cologne, Germany
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Ghnaimawi S, Rebello L, Baum J, Huang Y. DHA but not EPA induces the trans-differentiation of C2C12 cells into white-like adipocytes phenotype. PLoS One 2021; 16:e0249438. [PMID: 34473703 PMCID: PMC8412409 DOI: 10.1371/journal.pone.0249438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 08/12/2021] [Indexed: 01/21/2023] Open
Abstract
Muscle derived stem cells (MDSCs) and myoblast play an important role in myotube regeneration when muscle tissue is injured. However, these cells can be induced to differentiate into adipocytes once exposed to PPARγ activator like EPA and DHA that are highly suggested during pregnancy. The objective of this study aims at determining the identity of trans-differentiated cells by exploring the effect of EPA and DHA on C2C12 undergoing differentiation into brown and white adipocytes. DHA but not EPA committed C2C12 cells reprograming into white like adipocyte phenotype. Also, DHA promoted the expression of lipolysis regulating genes but had no effect on genes regulating β-oxidation referring to its implication in lipid re-esterification. Furthermore, DHA impaired C2C12 cells differentiation into brown adipocytes through reducing the thermogenic capacity and mitochondrial biogenesis of derived cells independent of UCP1. Accordingly, DHA treated groups showed an increased accumulation of lipid droplets and suppressed mitochondrial maximal respiration and spare respiratory capacity. EPA, on the other hand, reduced myogenesis regulating genes, but no significant differences were observed in the expression of adipogenesis key genes. Likewise, EPA suppressed the expression of WAT signature genes indicating that EPA and DHA have an independent role on white adipogensis. Unlike DHA treatment, EPA supplementation had no effect on the differential of C2C12 cells into brown adipocytes. In conclusion, DHA is a potent adipogenic and lipogenic factor that can change the metabolic profile of muscle cells by increasing myocellular fat.
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Affiliation(s)
- Saeed Ghnaimawi
- Department of Cell and Molecular Biology Program, University of Arkansas, Fayetteville, North Carolina, United States of America
| | - Lisa Rebello
- Department of Cell and Molecular Biology Program, University of Arkansas, Fayetteville, North Carolina, United States of America
| | - Jamie Baum
- Department of Food Science, Division of Agriculture, University of Arkansas, Fayetteville, AR, United States of America
| | - Yan Huang
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, North Carolina, United States of America
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Song T, Yang Y, Jiang S, Peng J. Novel Insights into Adipogenesis from the Perspective of Transcriptional and RNA N6-Methyladenosine-Mediated Post-Transcriptional Regulation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001563. [PMID: 33173729 PMCID: PMC7610318 DOI: 10.1002/advs.202001563] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Indexed: 05/09/2023]
Abstract
Obesity is a critical risk factor causing the development of metabolic diseases and cancers. Its increasing prevalence worldwide has aroused great concerns of the researchers on adipose development and metabolic function. During adipose expansion, adipogenesis is a way to store lipids as well as to avoid lipotoxicity in other tissues, and may be an approach to offset the negative metabolic effects of obesity. In this Review, the transcriptional regulation of adipogenesis is outlined to characterize numerous biological processes in research on the determination of adipocyte fate and regulation of adipogenic differentiation. Notably, one of the post-transcriptional modifications of mRNA, namely, N6-methyladenosine (m6A), has been recently found to play a role in adipogenesis. Here, the roles of m6A-related enzymes and proteins in adipogenesis, with a particular focus on how these m6A-related proteins function at different stages of adipogenesis, are mainly discussed. The Review also highlights the coordination role of the transcriptional and post-transcriptional (RNA m6A methylation) regulation in adipogenesis and related biological processes. In this context, a better understanding of adipogenesis at both the transcriptional and post-transcriptional levels may facilitate the development of novel strategies to improve metabolic health in obesity.
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Affiliation(s)
- Tongxing Song
- Department of Animal Nutrition and Feed ScienceCollege of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan430070China
- The Cooperative Innovation Center for Sustainable Pig ProductionWuhan430070China
| | - Yang Yang
- Department of Animal Nutrition and Feed ScienceCollege of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan430070China
- The Cooperative Innovation Center for Sustainable Pig ProductionWuhan430070China
| | - Siwen Jiang
- The Cooperative Innovation Center for Sustainable Pig ProductionWuhan430070China
- Key Laboratory of Animal GeneticsBreeding and Reproduction Ministry of EducationCollege of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan430070China
| | - Jian Peng
- Department of Animal Nutrition and Feed ScienceCollege of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan430070China
- The Cooperative Innovation Center for Sustainable Pig ProductionWuhan430070China
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Chu Y, Gao Y, Yang Y, Liu Y, Guo N, Wang L, Huang W, Wu L, Sun D, Gu W. β-catenin mediates fluoride-induced aberrant osteoblasts activity and osteogenesis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114734. [PMID: 32806408 DOI: 10.1016/j.envpol.2020.114734] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/07/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Excess fluoride in drinking water is an environmental issue of increasing worldwide concern, because of its adverse effect on human health. Skeletal fluorosis caused by chronic exposure to excessive fluoride is a metabolic bone disease characterized by accelerated bone turnover accompanied by aberrant activation of osteoblasts. It is not clear whether Wnt/β-catenin signaling, an important signaling pathway regulating the function of osteoblasts, mediates the pathogenesis of skeletal fluorosis. A cross-sectional case-control study was conducted in Tongyu County, Jilin Province, China showed that fluoride stimulated the levels of OCN and OPG, resulting in accelerated bone turnover in patients with skeletal fluorosis. To investigate the influence of fluoride on Wnt/β-catenin signaling pathway, 64 male BALB/c mice were allotted randomly to four groups and treated with deionized water containing 0, 55, 110 and 221 mg/L NaF for 3 months, respectively. The results demonstrated that fluoride significantly increased mouse cancellous bone formation and the protein expression of Wnt3a, phospho-GSK3β (ser 9) and Runx2. Moreover, partial correlation analysis indicated that there was no significant correlation between fluoride exposure and Runx2 protein levels, after adjusting for β-catenin, suggesting that β-catenin might play a crucial role in fluoride-induced aberrant osteogenesis. In vivo, viability of SaoS2 cells was significantly facilitated by 4 mg/L NaF, and fluoride could induce the abnormal activation of Wnt/β-catenin signaling, the expression of its target gene Runx2 and significantly increased Tcf/Lef reporter activity. Importantly, inhibition of β-catenin suppressed fluoride-induced Runx2 protein expression and the osteogenic phenotypes. Taken together, the present study provided in vivo and in vitro evidence reveals a potential mechanism for fluoride-induced aberrant osteoblast activation and indicates that β-catenin is the pivot molecule mediating viability and differentiation of osteoblasts and might be a therapeutic target for skeletal fluorosis.
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Affiliation(s)
- Yanru Chu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Yang Liu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Ning Guo
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Limei Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Wei Huang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Liaowei Wu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Dianjun Sun
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health (23618504), Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Heilongjiang Provincial Key Lab of Trace Elements and Human Health Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
| | - Weikuan Gu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China; Department of Orthopedic Surgery and BME-Campbell Clinic, University of Tennessee Health Science Center, Memphis, 38163, TN, USA; Research Service, Veterans Affairs Medical Center, Memphis, 38104, TN, USA.
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11
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Wang L, Shan T. Factors inducing transdifferentiation of myoblasts into adipocytes. J Cell Physiol 2020; 236:2276-2289. [PMID: 32989814 DOI: 10.1002/jcp.30074] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/08/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
Fat infiltration in skeletal muscle is observed in several myopathies, is associated with muscular dysfunction, and is strongly correlated with insulin resistance, diabetes, obesity, and aging. In animal production, skeletal muscle fat (also known as intermuscular and intramuscular fat) is positively related to meat quality including tenderness, flavor, and juiciness. Thus, understanding the cell origin and regulation mechanism of skeletal muscle fat infiltration is important for developing therapies against human myopathies as well as for improving meat quality. Notably, age, sarcopenia, oxidative stress, injury, and regeneration can activate adipogenic differentiation potential in myoblasts and affect fat accumulation in skeletal muscle. In addition, several transcriptional and nutritional factors can directly induce transdifferentiation of myoblasts into adipocytes. In this review, we focused on the recent progress in understanding the muscle-to-adipocyte differentiation and summarized and discussed the genetic, nutritional, and physiological factors that can induce transdifferentiation of myoblasts into adipocytes. Moreover, the regulatory roles and mechanisms of these factors during the transdifferentiation process were also discussed.
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Affiliation(s)
- Liyi Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
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12
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Ge L, Kang J, Dong X, Luan D, Su G, Li G, Zhang Y, Quan F. Myostatin site-directed mutation and simultaneous PPARγ site-directed knockin in bovine genome. J Cell Physiol 2020; 236:2592-2605. [PMID: 32841375 DOI: 10.1002/jcp.30017] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/28/2020] [Accepted: 08/04/2020] [Indexed: 12/13/2022]
Abstract
Most studies on the acquisition of advantageous traits in transgenic animals only focus on monogenic traits. In practical applications, transgenic animals need to possess multiple advantages. Therefore, multiple genes need to be edited simultaneously. CRISPR/Cas9 technology has been widely used in many research fields. However, few studies on endogenous gene mutation and simultaneous exogenous gene insertion performed via CRISPR/Cas9 technology are available. In this study, the CRISPR/Cas9 technology was used to achieve myostatin (MSTN) point mutation and simultaneous peroxisome proliferator-activated receptor-γ (PPARγ) site-directed knockin in the bovine genome. The feasibility of this gene editing strategy was verified on a myoblast model. The same gene editing strategy was used to construct a mutant myoblast model with MSTN mutation and simultaneous PPARγ knockin. Quantitative reverse-transcription polymerase chain reaction, immunofluorescence staining, and western blot analyses were used to detect the expression levels of MSTN and PPARγ in the mutant myoblast. Results showed that this strategy can inhibit the expression of MSTN and promote the expression of PPARγ. The cell counting kit-8 cell proliferation analysis, 5-ethynyl-2'-deoxyuridine cell proliferation analysis, myotube fusion index statistics, oil red O staining, and triglyceride content detection revealed that the proliferation, myogenic differentiation, and adipogenic transdifferentiation abilities of the mutant myoblasts were higher than those of the wild myoblasts. Finally, transgenic bovine embryos were obtained via somatic cell nuclear transfer. This study provides a breeding material and technical strategy to breed high-quality bovine and a gene editing method to realize the mutation of endogenous genes and simultaneous insertion of exogenous genes in genomes.
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Affiliation(s)
- Luxing Ge
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Jian Kang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiangchen Dong
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Deji Luan
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Guanghua Su
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock (R2BGL), Inner Mongolia University, Hohhot, China
| | - Guangpeng Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock (R2BGL), Inner Mongolia University, Hohhot, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
| | - Fusheng Quan
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China
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13
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Wu L, Song Y, Zhang Y, Liang B, Deng Y, Tang T, Ye YC, Hou HY, Wang CC. Novel Genetic Variants of PPARγ2 Promoter in Gestational Diabetes Mellitus and its Molecular Regulation in Adipogenesis. Front Endocrinol (Lausanne) 2020; 11:499788. [PMID: 33551986 PMCID: PMC7862745 DOI: 10.3389/fendo.2020.499788] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 11/25/2020] [Indexed: 11/13/2022] Open
Abstract
Peroxisome proliferator-activated receptor γ2 (PPARγ2) is a nuclear hormone receptor of ligand-dependent transcription factor with a key role in adipogenesis and insulin sensitization in diabetes mellitus. In this study, we investigated genetic variants in PPARγ2 promoter, its association with gestational diabetes mellitus (GDM), and its molecular regulation. PPARγ2 promoter and start codon (-2,091 to +82 bp) from 400 pregnancies with GDM and 400 gestational-age matched control pregnancies were sequenced. Association and linkage disequilibrium of the identified polymorphisms with GDM was determined. ChIP-seq, gene silencing, and dual-luciferase reporter assays were performed to confirm transcription factor binding sites and promoter activity of the variants. Transfection experiments were carried out to determine the effects of variants on gene expression and adipogenesis. Among 15 variants identified, 7 known variants were not significantly associated with the risk of GDM (odds ratio: 0.710-1.208, 95% confidence interval: 0.445-0.877 to 1.132-1.664, P > 0.05) while linkage disequilibrium was significant (D' > 0.7, R2 > 0.9). However, T-A-A-T-G haplotype was not significantly associated with GDM (χ2 = 2.461, P = 0.117). Five rare variants and 3 novel variants (rs948820149, rs1553638909, and rs1553638903) were only found in GDM. Transcription factor glucocorticoid receptor β (GRβ) bound to -807A/C (rs948820149) and knockdown of GRβ suppressed PPARγ2 promoter activity. This mutation significantly down-regulated PPARγ2 expression and alleviated adipogenesis. In conclusion, a novel -807A/C in PPARγ2 promoter was identified in Chinese women with GDM and the mutation affected GRβ binding and transcription of PPARγ2 for adipogenesis.
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Affiliation(s)
- Ling Wu
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Yi Song
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Yuan Zhang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Bo Liang
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Yan Deng
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Tao Tang
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Yan Chou Ye
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Hong Ying Hou
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Development and Reproduction Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Chinese University of Hong Kong-Sichuan University Joint Laboratory in Reproductive Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- *Correspondence: Chi Chiu Wang,
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14
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Jiang YX, Shi WJ, Ma DD, Zhang JN, Ying GG, Zhang H, Ong CN. Male-biased zebrafish sex differentiation and metabolomics profile changes caused by dydrogesterone. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 214:105242. [PMID: 31319296 DOI: 10.1016/j.aquatox.2019.105242] [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: 04/03/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 06/10/2023]
Abstract
Some progestins, including the widely used dydrogesterone (DDG), have been shown to cause male-biased sex ratio in teleost. However, there is a gap to fully understand the mechanisms of the sex differentiation disturbance by progestins, particularly from the metabolic aspect. We thus aimed to examine the sex changes by exposing zebrafish embryos to 4.4 (L), 44 (M) and 440 (H) ng/L DDG for up to 140 days, and investigated metabolomic profile changes during the critical period of sex differentiation at fry stage (35 dpf). DDG increased the percentage of male zebrafish in a dose-dependent manner, with 98% male fish in the high concentration group. In zebrafish fry, DDG increased the levels of some free fatty acids, monoglycerides, acylcarnitines, organic acids, free amino acids, while decreased lysophospholipids, uric acid and bile acids. DDG exposure also decreased the nucleoside monophosphates and UDP-sugars while increased nucleosides and their bases. These metabolite changes, namely increase in n-3 PUFAs (polyunsaturated fatty acids), myo-inositol, taurine, palmitoleic acid, oleic acid, lactic acid, fumaric acid, and uracil, and decrease in uric acid and bile acids, might account for the male-biased sex ratio in zebrafish. It appears that many of these metabolites could inhibit several pathways that regulate zebrafish gonad differentiation, including NF-κB/COX-2 and Wnt/β-catenin pathways, and activate p53 pathway. Thus we proposed a hypothesis that DDG might induce oocytes apoptosis through the above pathways and finally lead to female-to-male sex reversal. The results from this study suggest that DDG at environmentally relevant concentrations could affect zebrafish metabolomic profiles and finally disturb fish sex differentiation.
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Affiliation(s)
- Yu-Xia Jiang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wen-Jun Shi
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
| | - Dong-Dong Ma
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China
| | - Jin-Na Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China.
| | - Hui Zhang
- NUS Environmental Research Institute, National University of Singapore, 117411, Singapore
| | - Choon-Nam Ong
- School of Public Health, National University of Singapore, 117547, Singapore.
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15
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Seiri P, Abi A, Soukhtanloo M. PPAR-γ: Its ligand and its regulation by microRNAs. J Cell Biochem 2019; 120:10893-10908. [PMID: 30770587 DOI: 10.1002/jcb.28419] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 12/04/2018] [Indexed: 01/24/2023]
Abstract
Peroxisome proliferator-activated receptors (PPARs) belong to the nuclear receptor superfamily. PPARs are categorized into three subtypes, PPARα, β/δ, and γ, encoded by different genes, expressed in diverse tissues and participate in various biological functions and can be activated by their metabolic derivatives in the body or dietary fatty acids. The PPAR-γ also takes parts in the regulation of energy balance, lipoprotein metabolism, insulin sensitivity, oxidative stress, and inflammatory signaling. It has been implicated in the pathology of numerous diseases including obesity, diabetes, atherosclerosis, and cancers. Among various cellular and molecular targets that are able to regulate PPAR-γ and its underlying pathways, microRNAs (miRNAs) appeared as important regulators. Given that the deregulation of these molecules via targeting PPAR-γ could affect initiation and progression of various diseases, identification of miRNAs that affects PPAR-γ could contribute to the better understanding of roles of PPAR-γ in various biological and pathological conditions. Here, we have summarized the function and various ligands of PPAR-γ and have highlighted various miRNAs involved in the regulation of PPAR-γ.
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Affiliation(s)
- Parvaneh Seiri
- Department of Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Abbas Abi
- Department of Biotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Soukhtanloo
- Department of Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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16
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Zhang J, Xu X, Liu Y, Zhang L, Odle J, Lin X, Zhu H, Wang X, Liu Y. EPA and DHA Inhibit Myogenesis and Downregulate the Expression of Muscle-related Genes in C2C12 Myoblasts. Genes (Basel) 2019; 10:genes10010064. [PMID: 30669396 PMCID: PMC6356802 DOI: 10.3390/genes10010064] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 01/11/2019] [Indexed: 12/31/2022] Open
Abstract
This study was conducted to elucidate the biological effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on cell proliferation, differentiation and gene expression in C2C12 myoblasts. C2C12 were treated with various concentrations of EPA or DHA under proliferation and differentiation conditions. Cell viability was analyzed using cell counting kit-8 assays (CCK-8). The Edu assays were performed to analyze cell proliferation. To analyze cell differentiation, the expressions of myogenic marker genes were determined at the transcriptional and translational levels by qRT-PCR, immunoblotting and immunofluorescence. Global gene expression patterns were characterized using RNA-sequencing. Phosphorylation levels of ERK and Akt were examined by immunoblotting. Cell viability and proliferation was significantly inhibited after incubation with EPA (50 and 100 μM) or DHA (100 μM). Both EPA and DHA suppressed C2C12 myoblasts differentiation. RNA-sequencing analysis revealed that some muscle-related genes were significantly downregulated following EPA or DHA (50 μM) treatment, including insulin-like growth factor 2 (IGF-2), troponin T3 (Tnnt3), myoglobin (Mb), myosin light chain phosphorylatable fast skeletal muscle (Mylpf) and myosin heavy polypeptide 3 (Myh3). IGF-2 was crucial for the growth and differentiation of skeletal muscle and could activate the PI3K/Akt and the MAPK/ERK cascade. We found that EPA and DHA (50 μM) decreased the phosphorylation levels of ERK1/2 and Akt in C2C12 myoblasts. Thus, this study suggested that EPA and DHA exerted an inhibitory effect on myoblast proliferation and differentiation and downregulated muscle-related genes expression.
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Affiliation(s)
- Jing Zhang
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Xin Xu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Yan Liu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Lin Zhang
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Jack Odle
- Laboratory of Development Nutrition, Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA.
| | - Xi Lin
- Laboratory of Development Nutrition, Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA.
| | - Huiling Zhu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Xiuying Wang
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Yulan Liu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, China.
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17
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Potential Roles of n-3 PUFAs during Skeletal Muscle Growth and Regeneration. Nutrients 2018; 10:nu10030309. [PMID: 29510597 PMCID: PMC5872727 DOI: 10.3390/nu10030309] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 03/01/2018] [Accepted: 03/02/2018] [Indexed: 01/06/2023] Open
Abstract
Omega-3 polyunsaturated fatty acids (n-3 PUFAs), which are commonly found in fish oil supplements, are known to possess anti-inflammatory properties and more recently alter skeletal muscle function. In this review, we discuss novel findings related to how n-3 PUFAs modulate molecular signaling responsible for growth and hypertrophy as well as the activity of muscle stem cells. Muscle stem cells commonly known as satellite cells, are primarily responsible for driving the skeletal muscle repair process to potentially damaging stimuli, such as mechanical stress elicited by exercise contraction. To date, there is a paucity of human investigations related to the effects of n-3 PUFAs on satellite cell content and activity. Based on current in vitro investigations, this review focuses on novel mechanisms linking n-3 PUFA’s to satellite cell activity and how they may improve muscle repair. Understanding the role of n-3 PUFAs during muscle growth and regeneration in association with exercise could lead to the development of novel supplementation strategies that increase muscle mass and strength, therefore possibly reducing the burden of muscle wasting with age.
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18
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Zhou Y, Song T, Peng J, Zhou Z, Wei H, Zhou R, Jiang S, Peng J. SIRT1 suppresses adipogenesis by activating Wnt/β-catenin signaling in vivo and in vitro. Oncotarget 2018; 7:77707-77720. [PMID: 27776347 PMCID: PMC5363615 DOI: 10.18632/oncotarget.12774] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/12/2016] [Indexed: 02/07/2023] Open
Abstract
Sirtuin 1 (SIRT1) regulates adipocyte and osteoblast differentiation. However, the underlying mechanism should be investigated. This study revealed that SIRT1 acts as a crucial repressor of adipogenesis. RNA-interference-mediated SIRT1 knockdown or genetic ablation enhances adipogenic potential, whereas SIRT1 overexpression inhibits adipogenesis in mesenchymal stem cells (MSCs). SIRT1 also deacetylates the histones of sFRP1, sFRP2, and Dact1 promoters; inhibits the mRNA expression of sFRP1, sFRP2, and Dact1; activates Wnt signaling pathways; and suppresses adipogenesis. SIRT1 deacetylates β-catenin to promote its accumulation in the nucleus and thus induces the transcription of genes that block MSC adipogenesis. In mice, the partial absence of SIRT1 promotes the formation of white adipose tissues without affecting the development of the body of mice. Our study described the regulatory role of SIRT1 in Wnt signaling and proposed a regulatory mechanism of adipogenesis.
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Affiliation(s)
- Yuanfei Zhou
- State Key Laboratory of Agricultural Microbiology, Division of Animal Infectious Disease, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, P. R. China.,Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Tongxing Song
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Jie Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Zheng Zhou
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Rui Zhou
- State Key Laboratory of Agricultural Microbiology, Division of Animal Infectious Disease, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, P. R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, P. R. China
| | - Siwen Jiang
- Key Laboratory of Swine Genetics and Breeding of Agricultural Ministry, and Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, P. R. China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, P. R. China
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Cheng Y, Zhu X, Cheng F, Ji L, Zhou Y. Delta-like homolog1/GATA binding protein 2 axis mediates leptin inhibition of PPARγ2 expression in hepatic stellate cells in vitro. Life Sci 2018; 192:183-189. [DOI: 10.1016/j.lfs.2017.11.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 11/19/2017] [Accepted: 11/28/2017] [Indexed: 02/06/2023]
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20
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Hu X, Zhou Y, Yang Y, Peng J, Song T, Xu T, Wei H, Jiang S, Peng J. Identification of zinc finger protein Bcl6 as a novel regulator of early adipose commitment. Open Biol 2017; 6:rsob.160065. [PMID: 27251748 PMCID: PMC4929941 DOI: 10.1098/rsob.160065] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/09/2016] [Indexed: 12/21/2022] Open
Abstract
Adipose tissue is a key determinant of whole-body metabolism and energy homeostasis. Unravelling the transcriptional regulatory process during adipogenesis is therefore highly relevant from a biomedical perspective. In these studies, zinc finger protein B-cell lymphoma 6 (Bcl6) was demonstrated to have a role in early adipogenesis of mesenchymal stem cells. Bcl6 is enriched in preadipose versus non-preadipose fibroblasts and shows upregulated expression in the early stage of adipogenesis. Gain- and loss-of-function studies revealed that Bcl6 acts as a key regulator of adipose commitment and differentiation both in vitro and ex vivo. RNAi-mediated knockdown of Bcl6 in C3H10T1/2 cells greatly inhibited adipogenic potential, whereas Bcl6 overexpression enhanced adipogenic differentiation. This transcription factor also directly or indirectly targets and controls the expression of some early and late adipogenic regulators (i.e. Zfp423, Zfp467, KLF15, C/EBPδ, C/EBPα and PPARγ). We further identified that Bcl6 transactivated the signal transducers and activators of transcription 1 (STAT1), which was determined as a required factor for adipogenesis. Moreover, overexpression of STAT1 rescued the impairment of adipogenic commitment and differentiation induced by Bcl6 knockdown in C3H10T1/2 cells, thereby confirming that STAT1 is a downstream direct target of Bcl6. This study identifies Bcl6 as a positive transcriptional regulator of early adipose commitment.
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Affiliation(s)
- Xiaoming Hu
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, People's Republic of China
| | - Yuanfei Zhou
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Yang Yang
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Jie Peng
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Tongxing Song
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Tao Xu
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Siwen Jiang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, People's Republic of China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, People's Republic of China
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Wang H, Luo J, He Q, Yao D, Wu J, Loor JJ. miR-26b promoter analysis reveals regulatory mechanisms by lipid-related transcription factors in goat mammary epithelial cells. J Dairy Sci 2017; 100:5837-5849. [DOI: 10.3168/jds.2016-12440] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/29/2017] [Indexed: 11/19/2022]
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22
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Dossi CG, Cadagan C, San Martín M, Espinosa A, González-Mañán D, Silva D, Mancilla RA, Tapia GS. Effects of rosa mosqueta oil supplementation in lipogenic markers associated with prevention of liver steatosis. Food Funct 2017; 8:832-841. [PMID: 28128380 DOI: 10.1039/c6fo01762b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Rosa mosqueta (RM) oil is rich in α-linolenic acid (ALA) - a precursor of eicosapentaenoic (EPA) and docosahexaenoic acid (DHA), and it has a high antioxidant activity due to its abundant content of tocopherols. Additionally, it has been observed that RM oil administration prevents hepatic steatosis. Thus, the aim of this study was to demonstrate the antilipogenic mechanism related to RM oil administration in a high-fat diet (HFD) fed mice model by evaluating markers associated with the regulation of lipid droplet metabolism (PLIN2, PLIN5 and PPAR-γ), and proteins associated with lipogenesis (FAS and SREBP-1c). C57BL/6J mice were fed either a control diet or a HFD, with and without RM oil supplementation for 12 weeks. The results showed that RM oil supplementation decreases hepatic PLIN2 and PPAR-γ mRNA expression and SREBP-1c, FAS and PLIN2 protein levels, whereas we did not find changes in the level of PLIN5 among the groups. These results suggest that modulation of lipogenic markers could be one of the mechanisms, through which RM oil supplementation prevents the hepatic steatosis induced by HFD consumption in a mice model.
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Affiliation(s)
- Camila G Dossi
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - Cynthia Cadagan
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - Marcela San Martín
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - Alejandra Espinosa
- Department of Medical Technology, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Daniel González-Mañán
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - David Silva
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
| | - Rodrigo A Mancilla
- School of Biochemical Engineering, Faculty of Engineering, Pontifical Catholic University of Valparaiso, Valparaiso, Chile
| | - Gladys S Tapia
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
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Pathology of muscular steatosis in the bovine species: report of two spontaneously arising cases and comparative overview of the condition. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s00580-016-2376-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Donma MM, Donma O. Promising link between selenium and peroxisome proliferator activated receptor gamma in the treatment protocols of obesity as well as depression. Med Hypotheses 2016; 89:79-83. [PMID: 26968915 DOI: 10.1016/j.mehy.2016.02.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/31/2016] [Accepted: 02/07/2016] [Indexed: 12/13/2022]
Abstract
Considerable interest has been given to the significance of peroxisome proliferator activated receptors (PPARs) in macronutrient metabolism, however, there is not sufficient data concerning the interactions between PPARs and micronutrients. Investigations performed on PPARγ and one of the essential micronutrients selenium (Se) have shown that both parameters may lead to alterations in obesity-related or mood disorders. Therefore, it is plausible to consider PPARγ and Se together as a powerful combination during the treatment of two associated diseases; obesity and depression. PPARγ has been shown to be involved in the antidepressant-like activity. It is also an important parameter to be considered in obesity as the master regulator of adipogenesis. The mechanism of action of PPARγ is initiated by ligand binding which induces a conformational change in the receptor. Se is capable of alleviating inflammatory signaling pathways. Obesity is associated with chronic low-grade inflammation. Depression is also defined as an inflammatory disorder. Inflammatory mediators such as tumor necrosis factor-alpha (TNFα) participate in the progression of depression. They are also obesity-associated parameters. Due to TNFα induced depressive-like behaviors and the positive association between this proinflammatory cytokine and obesity, TNFα-activated signaling pathways and those inhibiting them have recently gained importance as potential targets and therapeutic tools, respectively. More studies are necessary to develop compounds with therapeutic nature against depressive disorders and obesity. PPARγ is an important signaling pathway that occurs at the crossroads of depression and obesity. Se, aside from its anti-inflammatory, anticarcinogenic and antioxidative nature, affects also the way of PPARγ action. Se supplementation or fortification as well as the development of the partial agonists of PPARγ in which lipophilic Se compounds are used as ligand followed by experimental trials and human studies using the newly developed compounds will be promising approaches for future hope during the treatment of these diseases.
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Affiliation(s)
- M M Donma
- Namik Kemal University, Faculty of Medicine, Tekirdag, Turkey
| | - O Donma
- Istanbul University, Cerrahpasa Medical Faculty, Istanbul, Turkey
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Lin JC. Impacts of Alternative Splicing Events on the Differentiation of Adipocytes. Int J Mol Sci 2015; 16:22169-89. [PMID: 26389882 PMCID: PMC4613302 DOI: 10.3390/ijms160922169] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/07/2015] [Accepted: 09/07/2015] [Indexed: 02/07/2023] Open
Abstract
Alternative splicing was found to be a common phenomenon after the advent of whole transcriptome analyses or next generation sequencing. Over 90% of human genes were demonstrated to undergo at least one alternative splicing event. Alternative splicing is an effective mechanism to spatiotemporally expand protein diversity, which influences the cell fate and tissue development. The first focus of this review is to highlight recent studies, which demonstrated effects of alternative splicing on the differentiation of adipocytes. Moreover, use of evolving high-throughput approaches, such as transcriptome analyses (RNA sequencing), to profile adipogenic transcriptomes, is also addressed.
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Affiliation(s)
- Jung-Chun Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei 11031, Taiwan.
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