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Park SY, Shin D, Yoon YS, Park S, Im SS, Kim Y, Kim YS, Choi C, Hur MW. TAT38 and TAT38 mimics potently inhibit adipogenesis by repressing C/EBPα, PPARγ, Pi-PPARγ, and SREBP1 expression. Biochim Biophys Acta Gene Regul Mech 2024; 1867:195030. [PMID: 38670485 DOI: 10.1016/j.bbagrm.2024.195030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024]
Abstract
Antiretroviral therapy-naive people living with HIV possess less fat than people without HIV. Previously, we found that HIV-1 transactivator of transcription (TAT) decreases fat in ob/ob mice. The TAT38 (a.a. 20-57) is important in the inhibition of adipogenesis and contains three functional domains: Cys-ZF domain (a.a. 20-35 TACTNCYCAKCCFQVC), core-domain (a.a. 36-46, FITKALGISYG), and protein transduction domain (PTD)(a.a. 47-57, RAKRRQRRR). Interestingly, the TAT38 region interacts with the Cyclin T1 of the P-TEFb complex, of which expression increases during adipogenesis. The X-ray crystallographic structure of the complex showed that the Cys-ZF and the core domain bind to the Cyclin T1 via hydrophobic interactions. To prepare TAT38 mimics with structural and functional similarities to TAT38, we replaced the core domain with a hydrophobic aliphatic amino acid (from carbon numbers 5 to 8). The TAT38 mimics with 6-hexanoic amino acid (TAT38 Ahx (C6)) and 7-heptanoic amino acid (TAT38 Ahp (C7)) inhibited adipogenesis of 3T3-L1 potently, reduced cellular triglyceride content, and decreased body weight of diet-induced obese (DIO) mice by 10.4-11 % in two weeks. The TAT38 and the TAT38 mimics potently repressed the adipogenic transcription factors genes, C/EBPα, PPARγ, and SREBP1. Also, they inhibit the phosphorylation of PPARγ. The TAT peptides may be promising candidates for development into a drug against obesity or diabetes.
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Affiliation(s)
- Sun-Young Park
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, 134, ShinChon-Dong, SeoDaeMoon-Ku, Seoul 120-752, Republic of Korea
| | - Dongyoon Shin
- Proteomics Research Team, CHA Institute of Future Medicine, Seongnam, Republic of Korea; Department of Medical Science, School of Medicine, CHA University, Seongnam, Republic of Korea
| | - Young So Yoon
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, 134, ShinChon-Dong, SeoDaeMoon-Ku, Seoul 120-752, Republic of Korea
| | - Sujin Park
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, 134, ShinChon-Dong, SeoDaeMoon-Ku, Seoul 120-752, Republic of Korea
| | - Seung-Soon Im
- Department of Physiology, Keimyung University School of Medicine, 1095 Dalgubeol-daero, Dalseo-gu, Daegu 42601, Republic of Korea
| | - Yeongshin Kim
- Proteomics Research Team, CHA Institute of Future Medicine, Seongnam, Republic of Korea; Department of Medical Science, School of Medicine, CHA University, Seongnam, Republic of Korea
| | - Young-Soo Kim
- Proteomics Research Team, CHA Institute of Future Medicine, Seongnam, Republic of Korea; Department of Medical Science, School of Medicine, CHA University, Seongnam, Republic of Korea
| | - CheolSoo Choi
- Korea Mouse Metabolic Phenotyping Center, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Republic of Korea; Division of Endocrinology & Metabolism, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon 21565, Republic of Korea
| | - Man-Wook Hur
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, 134, ShinChon-Dong, SeoDaeMoon-Ku, Seoul 120-752, Republic of Korea.
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Singh AK, Upadhyay V, Sethi A, Chowdhury S, Mishra S, Verma SP, Bhatt MLB, Trivedi AK. Ring finger protein 138 inhibits transcription factor C/EBPα protein turnover leading to differentiation arrest in acute myeloid leukemia. Biochem J 2024; 481:653-666. [PMID: 38666590 DOI: 10.1042/bcj20240027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/12/2024]
Abstract
E3 ubiquitin ligase, ring finger protein 138 (RNF138) is involved in several biological processes; however, its role in myeloid differentiation or tumorigenesis remains unclear. RNAseq data from TNMplot showed that RNF138 mRNA levels are highly elevated in acute myeloid leukemia (AML) bone marrow samples as compared with bone marrow of normal volunteers. Here, we show that RNF138 serves as an E3 ligase for the tumor suppressor CCAAT/enhancer binding protein (C/EBPα) and promotes its degradation leading to myeloid differentiation arrest in AML. Wild-type RNF138 physically interacts with C/EBPα and promotes its ubiquitin-dependent proteasome degradation while a mutant RNF-138 deficient in ligase activity though interacts with C/EBPα, fails to down-regulate it. We show that RNF138 depletion enhances endogenous C/EBPα levels in peripheral blood mononuclear cells (PBMCs) isolated from healthy volunteers. Our data further shows that RNF138-mediated degradation of C/EBPα negatively affects its transactivation potential on its target genes. Furthermore, RNF138 overexpression inhibits all-trans-retinoic acid-induced differentiation of HL-60 cells whereas RNF138 RNAi enhances. In line with RNF138 inhibiting C/EBPα protein turnover, we also observed that RNF138 overexpression inhibited β-estradiol (E2)-induced C/EBPα driven granulocytic differentiation in C/EBPα inducible K562-p42C/EBPα-estrogen receptor cells. Furthermore, we also recapitulated these findings in PBMCs isolated from AML patients where depletion of RNF138 increased the expression of myeloid differentiation marker CD11b. These results suggest that RNF138 inhibits myeloid differentiation by targeting C/EBPα for proteasomal degradation and may provide a plausible mechanism for loss of C/EBPα expression often observed in myeloid leukemia. Also, targeting RNF138 may resolve differentiation arrest by restoring C/EBPα expression in AML.
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Affiliation(s)
- Anil Kumar Singh
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vishal Upadhyay
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arppita Sethi
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sangita Chowdhury
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Shivkant Mishra
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Shailendra Prasad Verma
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
- King George's Medical University, Lucknow 226003, UP, India
| | | | - Arun Kumar Trivedi
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Lee E, Nam JO. Anti-Obesity and Anti-Diabetic Effects of Ostericum koreanum (Ganghwal) Extract. Int J Mol Sci 2024; 25:4908. [PMID: 38732125 PMCID: PMC11084156 DOI: 10.3390/ijms25094908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/26/2024] [Accepted: 04/27/2024] [Indexed: 05/13/2024] Open
Abstract
"Ganghwal" is a widely used herbal medicine in Republic of Korea, but it has not been reported as a treatment strategy for obesity and diabetes within adipocytes. In this study, we determined that Ostericum koreanum extract (OKE) exerts an anti-obesity effect by inhibiting adipogenesis and an anti-diabetic effect by increasing the expression of genes related to glucose uptake in adipocytes and inhibiting α-glucosidase activity. 3T3-L1 preadipocytes were differentiated for 8 days in methylisobutylxanthine, dexamethasone, and insulin medium, and the effect of OKE was confirmed by the addition of 50 and 100 µg/mL of OKE during the differentiation process. This resulted in a reduction in lipid accumulation and the expression of PPARγ (Peroxisome proliferator-activated receptor γ) and C/EBPα (CCAAT enhancer binding protein α). Significant activation of AMPK (AMP-activated protein kinase), increased expression of GLUT4 (Glucose Transporter Type 4), and inhibition of α-glucosidase activity were also observed. These findings provide the basis for the anti-obesity and anti-diabetic effects of OKE. In addition, OKE has a significant antioxidant effect. This study presents OKE as a potential natural product-derived material for the treatment of patients with metabolic diseases such as obesity- and obesity-induced diabetes.
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Affiliation(s)
- Eunbi Lee
- Department of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea;
| | - Ju-Ock Nam
- Department of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea;
- Research Institute of Tailored Food Technology, Kyungpook National University, Daegu 41566, Republic of Korea
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4
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Habelreeh HH, Athinarayanan J, Periasamy VS, Alshatwi AA. Maillard Reaction-Derived S-Doped Carbon Dots Promotes Downregulation of PPARγ, C/EBPα, and SREBP-1 Genes In-Vitro. Molecules 2024; 29:2008. [PMID: 38731499 PMCID: PMC11085050 DOI: 10.3390/molecules29092008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Carbon nanodots (CDs) are commonly found in food products and have attracted significant attention from food scientists. There is a high probability of CD exposure in humans, but its impacts on health are unclear. Therefore, health effects associated with CD consumption should be investigated. In this study, we attempted to create a model system of the Maillard reaction between cystine and glucose using a simple cooking approach. The CDs (CG-CDs) were isolated from cystine-glucose-based Maillard reaction products and characterized using fluorescence spectroscopy, X-ray diffractometer (XRD), and transmission electron microscope (TEM). Furthermore, human mesenchymal stem cells (hMCs) were used as a model to unravel the CDs' cytotoxic properties. The physiochemical assessment revealed that CG-CDs emit excitation-dependent fluorescence and possess a circular shape with sizes ranging from 2 to 13 nm. CG-CDs are predominantly composed of carbon, oxygen, and sulfur. The results of the cytotoxicity evaluation indicate good biocompatibility, where no severe toxicity was observed in hMCs up to 400 μg/mL. The DPPH assay demonstrated that CDs exert potent antioxidant abilities. The qPCR analysis revealed that CDs promote the downregulation of the key regulatory genes, PPARγ, C/EBPα, SREBP-1, and HMGCR, coupled with the upregulation of anti-inflammatory genes. Our findings suggested that, along with their excellent biocompatibility, CG-CDs may offer positive health outcomes by modulating critical genes involved in lipogenesis, homeostasis, and obesity pathogenesis.
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Affiliation(s)
| | | | | | - Ali A. Alshatwi
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia; (H.H.H.); (J.A.)
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5
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Choi YR, Na HJ, Lee J, Kim YS, Kim MJ. Isoeugenol Inhibits Adipogenesis in 3T3-L1 Preadipocytes with Impaired Mitotic Clonal Expansion. Nutrients 2024; 16:1262. [PMID: 38732509 PMCID: PMC11085592 DOI: 10.3390/nu16091262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Isoeugenol (IEG), a natural component of clove oil, possesses antioxidant, anti-inflammatory, and antibacterial properties. However, the effects of IEG on adipogenesis have not yet been elucidated. Here, we showed that IEG blocks adipogenesis in 3T3-L1 cells at an early stage. IEG inhibits lipid accumulation in adipocytes in a concentration-dependent manner and reduces the expression of mature adipocyte-related factors including PPARγ, C/EBPα, and FABP4. IEG treatment at different stages of adipogenesis showed that IEG inhibited adipocyte differentiation by suppressing the early stage, as confirmed by lipid accumulation and adipocyte-related biomarkers. The early stage stimulates growth-arrested preadipocytes to enter mitotic clonal expansion (MCE) and initiates their differentiation into adipocytes by regulating cell cycle-related factors. IEG arrested 3T3-L1 preadipocytes in the G0/G1 phase of the cell cycle and attenuated cell cycle-related factors including cyclinD1, CDK6, CDK2, and cyclinB1 during the MCE stage. Furthermore, IEG suppresses reactive oxygen species (ROS) production during MCE and inhibits ROS-related antioxidant enzymes, including superoxide dismutase1 (SOD1) and catalase. The expression of cell proliferation-related biomarkers, including pAKT and pERK1/2, was attenuated by the IEG treatment of 3T3-L1 preadipocytes. These findings suggest that it is a potential therapeutic agent for the treatment of obesity.
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Affiliation(s)
- Yae Rim Choi
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea; (Y.R.C.); (H.-J.N.); (J.L.)
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea;
| | - Hyun-Jin Na
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea; (Y.R.C.); (H.-J.N.); (J.L.)
| | - Jaekwang Lee
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea; (Y.R.C.); (H.-J.N.); (J.L.)
| | - Young-Suk Kim
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea;
| | - Min Jung Kim
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea; (Y.R.C.); (H.-J.N.); (J.L.)
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Lian T, Guan R, Zhou BR, Bai Y. Structural mechanism of synergistic targeting of the CX3CR1 nucleosome by PU.1 and C/EBPα. Nat Struct Mol Biol 2024; 31:633-643. [PMID: 38267599 DOI: 10.1038/s41594-023-01189-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 11/23/2023] [Indexed: 01/26/2024]
Abstract
Pioneer transcription factors are vital for cell fate changes. PU.1 and C/EBPα work together to regulate hematopoietic stem cell differentiation. However, how they recognize in vivo nucleosomal DNA targets remains elusive. Here we report the structures of the nucleosome containing the mouse genomic CX3CR1 enhancer DNA and its complexes with PU.1 alone and with both PU.1 and the C/EBPα DNA binding domain. Our structures reveal that PU.1 binds the DNA motif at the exit linker, shifting 17 bp of DNA into the core region through interactions with H2A, unwrapping ~20 bp of nucleosomal DNA. C/EBPα binding, aided by PU.1's repositioning, unwraps ~25 bp of entry DNA. The PU.1 Q218H mutation, linked to acute myeloid leukemia, disrupts PU.1-H2A interactions. PU.1 and C/EBPα jointly displace linker histone H1 and open the H1-condensed nucleosome array. Our study unveils how two pioneer factors can work cooperatively to open closed chromatin by altering DNA positioning in the nucleosome.
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Affiliation(s)
- Tengfei Lian
- Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Ruifang Guan
- Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Bing-Rui Zhou
- Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Yawen Bai
- Laboratory of Biochemistry and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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Gao L, Wang Y, Gao Q, Chen Y, Zhang Z. Transcriptional control of CCAAT/enhancer binding protein zeta gene in chicken adipose tissue. Poult Sci 2024; 103:103540. [PMID: 38417330 PMCID: PMC10907851 DOI: 10.1016/j.psj.2024.103540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/25/2024] [Accepted: 02/05/2024] [Indexed: 03/01/2024] Open
Abstract
CCAAT/enhancer binding protein zeta (C/EBPZ) was differentially expressed in abdominal adipose tissues of fat and lean broilers and regulated adipogenesis in chicken. The objective of this study was to elucidate the transcriptional regulation of C/EBPZ gene in chicken adipose tissue. A 2,031-base pair (bp) chicken C/EBPZ sequence (2,025 nucleotides upstream to 6 nucleotides downstream from the initiator codon, -2,025/+6) was studied. The sequence exhibited a significant promoter activity (P < 0.05) and had some cis-acting elements, notably, a core promoter was identified in nucleotides -94 to +6. Additionally, DNA pull-down assay showed that proteins interacted with chicken C/EBPZ promoter (-173/+6) in preadipocytes were implicated in transcription, post-transcriptional regulation and translation. In addition, KLF2 facilitated the activities of chicken C/EBPZ promoter (-2,025/+6, -1,409/+6, -793/+6, -485/+6, -173/+6, and -94/+6) in preadipocytes (P < 0.05). The expression levels of KLF2 and C/EBPZ in chicken abdominal adipose tissue were substantially associated (r = 0.5978278, P < 0.0001), and KLF2 increased C/EBPZ expression in vitro (P < 0.05). Additionally, chromatin immunoprecipitation (ChIP)-PCR analysis revealed that KLF2 has the ability to interact with the chicken C/EBPZ promoter regions at least at the positions -1,245/-1,048 and -571/-397. Mutation analysis showed that the CGCAGCGCCCG motif located in the chicken C/EBPZ promoter at positions -45 to -35 is involved in regulating transcription and facilitates trans activation by KLF2. These results provided some information of transcription control of C/EBPZ in chicken adipose tissue.
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Affiliation(s)
- Lingyu Gao
- Department of Histology and Embryology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, PR China; Key Medical Laboratory of Stem Cell Transformation and Application, The First People's Hospital of Zhengzhou, Zhengzhou, Henan, 450000, PR China
| | - Yingjun Wang
- Department of Histology and Embryology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, PR China
| | - Qin Gao
- Department of Histology and Embryology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, PR China
| | - Yuechan Chen
- Department of Reproductive Medicine, The First Affiliated Hospital of Shihezi University, Shihezi, Xinjiang, 832000, PR China
| | - Zhiwei Zhang
- Department of Histology and Embryology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, PR China.
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Wang Y, Li Z, Chen W, Wang J, Huang Z, Yu XJ, Zhang YJ, Zheng L, Xu J. C/EBPα mediates the maturation and antitumor functions of macrophages in human hepatocellular carcinoma. Cancer Lett 2024; 585:216638. [PMID: 38266805 DOI: 10.1016/j.canlet.2024.216638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/29/2023] [Accepted: 01/09/2024] [Indexed: 01/26/2024]
Abstract
Recent studies have suggested that therapeutic upregulation of CCAAT/enhancer binding protein α (C/EBPα) prevents hepatocellular carcinoma (HCC) progression. However, the mechanisms underlying this outcome are not fully understood. In this study, we investigated the expression and functional roles of C/EBPα in human HCC, with a focus on monocytes/macrophages (Mφs). Paraffin-embedded tissues were used to visualize C/EBPα expression and analyze the prognostic value of C/EBPα+ monocytes/Mφs in HCC patients. The underlying regulatory mechanisms were examined using human monocyte-derived Mφs. The results showed that the expression of C/EBPα on monocytes/Mφs was significantly decreased in intra-tumor tissues compared to the corresponding peri-tumor tissues. C/EBPα+ monocytes/Mφs displayed well-differentiation and antitumor capacities, and the accumulation of these cells in tissue was associated with antitumor immune responses and predicted longer overall survival (OS) of HCC patients. Mechanistic studies demonstrated that C/EBPα was required for Mφ maturation and HLA-DR, CD169 and CD86 expression, which initiates antitumor cytotoxic T-cell responses; however, these effects were inhibited by monocyte autocrine IL-6- and IL-1β-induced suppression of mTOR1 signaling. Reprogramming Mφs via the upregulation of C/EBPα may provide a novel strategy for cancer immunotherapy in patients with HCC.
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Affiliation(s)
- Yongchun Wang
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China; Key Laboratory of Gene Function and Regulation of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhixiong Li
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Weibai Chen
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China; Key Laboratory of Gene Function and Regulation of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Junfeng Wang
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Zhijie Huang
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xing-Juan Yu
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Yao-Jun Zhang
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China; Department of Liver Surgery, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Limin Zheng
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China; Key Laboratory of Gene Function and Regulation of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Jing Xu
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
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Choi DH, Hong M, Kwon TH, Lee SU. Antioxidant and Anti-Obesity Effects of Juglans mandshurica in 3T3-L1 Cells and High-Fat Diet Obese Rats. J Microbiol Biotechnol 2024; 34:634-643. [PMID: 38111312 PMCID: PMC11016786 DOI: 10.4014/jmb.2311.11032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023]
Abstract
Juglans mandshurica Maxim. walnut (JMW) is well-known for the treatment of dermatosis, cancer, gastritis, diarrhea, and leukorrhea in Korea. However, the molecular mechanism underlying its anti-obesity activity remains unknown. In the current study, we aimed to determine whether JMW can influence adipogenesis in 3T3-L1 preadipocytes and high-fat diet rats and determine the antioxidant activity. The 20% ethanol extract of JMW (JMWE) had a total polyphenol content of 133.33 ± 2.60 mg GAE/g. Considering the antioxidant capacity, the ABTS and DPPH values of 200 μg/ml of JMWE were 95.69 ± 0.94 and 79.38 ± 1.55%, respectively. To assess the anti-obesity activity of JMWE, we analyzed the cell viability, fat accumulation, and adipogenesis-related factors, including CCAAT-enhancer-binding protein alpha (C/EBPα), sterol regulatory element-binding protein-1c (SREBP1c), peroxisome proliferator-activated receptor-gamma (PPARγ), fatty acid synthase (FAS), and acetyl-CoA carboxylase (ACC). We found that total lipid accumulation and triglyceride levels were reduced, and the fat accumulation rate decreased in a dose-dependent manner. Furthermore, JMWE suppressed adipogenesis-related factors C/EBPα, PPARγ, and SREBP1c, as well as FAS and ACC, both related to lipogenesis. Moreover, animal experiments revealed that JMWE could be employed to prevent and treat obesity-related diseases. Hence, JMWE could be developed as a healthy functional food and further explored as an anti-obesity drug.
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Affiliation(s)
- Da-Hye Choi
- Institute of Biological Resources, Chuncheon Bioindustry Foundation, Chuncheon 24232, Republic of Korea
| | - Min Hong
- Institute of Biological Resources, Chuncheon Bioindustry Foundation, Chuncheon 24232, Republic of Korea
| | - Tae-Hyung Kwon
- Institute of Biological Resources, Chuncheon Bioindustry Foundation, Chuncheon 24232, Republic of Korea
| | - Soo-Ung Lee
- Institute of Biological Resources, Chuncheon Bioindustry Foundation, Chuncheon 24232, Republic of Korea
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10
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Gerstner M, Heller V, Fechner J, Hermann B, Wang L, Lausen J. Prmt6 represses the pro-adipogenic Ppar-gamma-C/ebp-alpha transcription factor loop. Sci Rep 2024; 14:6656. [PMID: 38509237 PMCID: PMC10954715 DOI: 10.1038/s41598-024-57310-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/17/2024] [Indexed: 03/22/2024] Open
Abstract
The feed-forward loop between the transcription factors Ppar-gamma and C/ebp-alpha is critical for lineage commitment during adipocytic differentiation. Ppar-gamma interacts with epigenetic cofactors to activate C/ebp-alpha and the downstream adipocytic gene expression program. Therefore, knowledge of the epigenetic cofactors associated with Ppar-gamma, is central to understanding adipocyte differentiation in normal differentiation and disease. We found that Prmt6 is present with Ppar-gamma on the Ppar-gamma and C/ebp-alpha promoter. It contributes to the repression of C/ebp-alpha expression, in part through its ability to induce H3R2me2a. During adipocyte differentiation, Prmt6 expression is reduced and the methyltransferase leaves the promoters. As a result, the expression of Ppar-gamma and C/ebp-alpha is upregulated and the adipocytic gene expression program is established. Inhibition of Prmt6 by a small molecule enhances adipogenesis, opening up the possibility of epigenetic manipulation of differentiation. Our data provide detailed information on the molecular mechanism controlling the Ppar-gamma-C/ebp-alpha feed-forward loop. Thus, they advance our understanding of adipogenesis in normal and aberrant adipogenesis.
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Affiliation(s)
- Mirjam Gerstner
- Department of Eukaryotic Genetics, Institute of Biomedical Genetics, University of Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
| | - Vivien Heller
- Department of Eukaryotic Genetics, Institute of Biomedical Genetics, University of Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
| | - Johannes Fechner
- Department of Eukaryotic Genetics, Institute of Biomedical Genetics, University of Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
| | - Benedikt Hermann
- Department of Eukaryotic Genetics, Institute of Biomedical Genetics, University of Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
| | - Lei Wang
- Department of Eukaryotic Genetics, Institute of Biomedical Genetics, University of Stuttgart, Allmandring 31, 70569, Stuttgart, Germany
| | - Joern Lausen
- Department of Eukaryotic Genetics, Institute of Biomedical Genetics, University of Stuttgart, Allmandring 31, 70569, Stuttgart, Germany.
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11
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Xia Z, Wei Z, Li X, Liu Y, Gu X, Huang S, Zhang X, Wang W. C/EBPα aggravates renal fibrosis in CKD through the NOX4-ROS-apoptosis pathway in tubular epithelial cells. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167039. [PMID: 38281712 DOI: 10.1016/j.bbadis.2024.167039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 01/11/2024] [Accepted: 01/19/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND Chronic kidney disease (CKD) is a prevalent renal disorder with various risk factors. Emerging evidence indicates that the transcriptional factor CCAAT/enhancer binding protein alpha (C/EBPα) may be associated with renal fibrosis. However, the precise role of C/EBPα in CKD progression remains unexplored. METHODS We investigated the involvement of C/EBPα in CKD using two distinct mouse models induced by folic acid (FA) and unilateral ureteral obstruction (UUO). Additionally, we used RNA sequencing and KEGG analysis to identify potential downstream pathways governed by C/EBPα. FINDINGS Cebpa knockout significantly shielded mice from renal fibrosis and reduced reactive oxygen species (ROS) levels in both the FA and UUO models. Primary tubular epithelial cells (PTECs) lacking Cebpa exhibited reduced apoptosis and ROS accumulation following treatment with TGF-β. RNA sequencing analysis suggested that apoptosis is among the primary pathways regulated by C/EBPα, and identified NADPH oxidoreductase 4 (NOX4) as a key protein upregulated upon C/EBPα induction (ICCB280). Treatment with l-Theanine, a potential NOX4 inhibitor, mitigated renal fibrosis and inflammation in both the FA and UUO mouse models. INTERPRETATION Our study unveils a role for C/EBPα in suppressing renal fibrosis, mitigating ROS accumulation, and reducing cell apoptosis. Furthermore, we investigate whether these protective effects are mediated by C/EBPα's regulation of NOX4 expression. These findings present a promising therapeutic target for modulating ROS and apoptosis in renal tubular cells, potentially offering an approach to treating CKD and other fibrotic diseases.
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Affiliation(s)
- Ziru Xia
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zhaonan Wei
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xin Li
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yunzi Liu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiangchen Gu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China; Department of Nephrology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, People's Republic of China
| | - Siyi Huang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaoyue Zhang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Weiming Wang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, People's Republic of China; Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
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12
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Rahn K, Abdallah AT, Gan L, Herbrich S, Sonntag R, Benitez O, Malaney P, Zhang X, Rodriguez AG, Brottem J, Marx G, Brümmendorf TH, Ostareck DH, Ostareck-Lederer A, Crysandt M, Post SM, Naarmann-de Vries IS. Insight into the mechanism of AML del(9q) progression: hnRNP K targets the myeloid master regulators CEBPA (C/EBPα) and SPI1 (PU.1). Biochim Biophys Acta Gene Regul Mech 2024; 1867:195004. [PMID: 38008244 DOI: 10.1016/j.bbagrm.2023.195004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 11/28/2023]
Abstract
Deletions on the long arm of chromosome 9 (del(9q)) are recurrent abnormalities in about 2 % of acute myeloid leukemia cases, which usually involve HNRNPK and are frequently associated with other known aberrations. Based on an Hnrnpk haploinsufficient mouse model, a recent study demonstrated a function of hnRNP K in pathogenesis of myeloid malignancies via the regulation of cellular proliferation and myeloid differentiation programs. Here, we provide evidence that reduced hnRNP K expression results in the dysregulated expression of C/EBPα and additional transcription factors. CyTOF analysis revealed monocytic skewing with increased levels of mature myeloid cells. To explore the role of hnRNP K during normal and pathological myeloid differentiation in humans, we characterized hnRNP K-interacting RNAs in human AML cell lines. Notably, RNA-sequencing revealed several mRNAs encoding key transcription factors involved in the regulation of myeloid differentiation as targets of hnRNP K. We showed that specific sequence motifs confer the interaction of SPI1 and CEBPA 5' and 3'UTRs with hnRNP K. The siRNA mediated reduction of hnRNP K in human AML cells resulted in an increase of PU.1 and C/EBPα that is most pronounced for the p30 isoform. The combinatorial treatment with the inducer of myeloid differentiation valproic acid resulted in increased C/EBPα expression and myeloid differentiation. Together, our results indicate that hnRNP K post-transcriptionally regulates the expression of myeloid master transcription factors. These novel findings can inaugurate novel options for targeted treatment of AML del(9q) by modulation of hnRNP K function.
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Affiliation(s)
- Kerstin Rahn
- Department of Intensive Care Medicine, University Hospital RWTH Aachen University, Aachen, Germany; Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ali T Abdallah
- Interdisciplinary Center for Clinical Research (IZKF) Aachen, RWTH Aachen University, Germany; Cluster of Excellence on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Lin Gan
- Interdisciplinary Center for Clinical Research (IZKF) Aachen, RWTH Aachen University, Germany
| | - Shelley Herbrich
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Roland Sonntag
- Department of Internal Medicine III, University Hospital RWTH Aachen University, Aachen, Germany
| | - Oscar Benitez
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Prerna Malaney
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xiaorui Zhang
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ashely G Rodriguez
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jared Brottem
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Gernot Marx
- Department of Intensive Care Medicine, University Hospital RWTH Aachen University, Aachen, Germany
| | - Tim H Brümmendorf
- Department of Hematology, Oncology, Hemostaseology and Stem Cell Transplantation, University Hospital RWTH Aachen University, Aachen, Germany; Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), Aachen, Germany
| | - Dirk H Ostareck
- Department of Intensive Care Medicine, University Hospital RWTH Aachen University, Aachen, Germany
| | - Antje Ostareck-Lederer
- Department of Intensive Care Medicine, University Hospital RWTH Aachen University, Aachen, Germany
| | - Martina Crysandt
- Department of Hematology, Oncology, Hemostaseology and Stem Cell Transplantation, University Hospital RWTH Aachen University, Aachen, Germany; Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), Aachen, Germany
| | - Sean M Post
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Isabel S Naarmann-de Vries
- Department of Intensive Care Medicine, University Hospital RWTH Aachen University, Aachen, Germany; Section of Bioinformatics and Systems Cardiology, University Hospital Heidelberg, Heidelberg, Germany.
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13
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Gina NNT, Kuo JL, Wu ML, Chuang SM. Sesamin and sesamolin potentially inhibit adipogenesis through downregulating the peroxisome proliferator-activated receptor γ protein expression and activity in 3T3-L1 cells. Nutr Res 2024; 123:4-17. [PMID: 38228077 DOI: 10.1016/j.nutres.2023.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/18/2024]
Abstract
Sesamin and sesamolin are major sesame lignans that have demonstrated anti-inflammatory, anticancer, and neuroprotective properties and potential benefits in the liver, cardiovascular diseases, and metabolic syndrome. However, despite previous research on their antiobesity effects and underlying mechanisms, a comprehensive investigation of these aspects is still lacking. In this study, we evaluated the regulatory effects of 20 to 80 µM sesamin and sesamolin on adipogenesis in vitro using 3T3-L1 cells as a model cell line. We hypothesized that the lignans would inhibit adipogenic differentiation in 3T3-L1 cells through the regulation of peroxisome proliferator-activated receptor γ (PPARγ). Our data indicate that sesamin and sesamolin inhibited the adipogenic differentiation of 3T3-L1 cells by dose-dependently decreasing lipid accumulation and triglyceride formation. Sesamin and sesamolin reduced the mRNA and protein expression of the adipogenesis-related transcription factors, PPARγ and CCAAT/enhancer-binding protein α, leading to the dose-dependent downregulations of their downstream targets, fatty acid binding protein 4, hormone-sensitive lipase, lipoprotein lipase, and glucose transporter 4. In addition, glucose uptake was dose-dependently attenuated by sesamin and sesamolin in both differentiated 3T3-L1 cells and HepG2 cells. Interestingly, our results suggested that sesamin and sesamolin might directly bind to PPARγ to inhibit its transcriptional activity. Finally, sesamin and sesamolin decreased the phosphorylation of 3 mitogen-activated protein kinase signaling components in differentiated 3T3-L1 cells. Taken together, our findings suggest that sesamin and sesamolin may exhibit antiobesity effects by potentially downregulating PPARγ and its downstream genes through the mitogen-activated protein kinase signaling pathway, offering important insights into the molecular mechanisms underlying the potential antiobesity effects of sesamin and sesamolin.
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Affiliation(s)
- Nelma Nyvonne Tiqu Gina
- Food Science Department, National Pingtung University of Science and Technology, Pingtung 91012, Taiwan
| | - Jui-Ling Kuo
- Food Science Department, National Pingtung University of Science and Technology, Pingtung 91012, Taiwan
| | - Mei-Li Wu
- Food Science Department, National Pingtung University of Science and Technology, Pingtung 91012, Taiwan.
| | - Show-Mei Chuang
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung 40227, Taiwan; Department of Law, National Chung Hsing University, Taichung 40227, Taiwan.
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14
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Jung DW, Jeong DH, Lee HS. Stimulation of estrogen receptor-alpha by hydroxyanilide fungicide, fenhexamid promotes lipid accumulation in 3 T3-L1 adipocyte. Pestic Biochem Physiol 2024; 199:105757. [PMID: 38458660 DOI: 10.1016/j.pestbp.2023.105757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/13/2023] [Accepted: 12/19/2023] [Indexed: 03/10/2024]
Abstract
Fenhexamid are fungicides that act against plant pathogens by inhibiting sterol biosynthesis. Nonetheless, it can trigger endocrine disruption and promote breast cancer cell growth. In a recent study, we investigated the mechanism underlying the lipid accumulation induced by fenhexamid hydroxyanilide fungicides in 3 T3-L1 adipocytes. To examine the estrogen receptor alpha (ERα)-agonistic effect, ER transactivation assay using the ERα-HeLa-9903 cell line was applied, and fenhexamid-induced ERα agonist effect was confirmed. Further confirmation that ERα-dependent lipid accumulation occurred was provided by treating 3 T3-L1 adipocytes with Methyl-piperidino-pyrazole hydrate (MPP), an ERα-selective antagonist. Fenhexamid mimicked the actions of ERα agonists and impacted lipid metabolism, and its mechanism involves upregulation of the expression of transcription factors that facilitate adipogenesis and lipogenesis. Additionally, it stimulated the expression of peroxisome proliferator-activated receptor (PPARγ), CCAAT/enhancer-binding protein α (C/EBPα), fatty acid synthase (FAS), and sterol regulatory element-binding protein 1 (SREBP1) and significantly elevated the expression of fatty acid-binding protein 4 (FABP4). In contrast, in combination with an ERα-selective antagonist, fenhexamid suppressed the expression of adipogenic/lipogenic transcription factors. These results suggest that fenhexamid affects the endocrine system and leads to lipid accumulation by interfering with processes influenced by ERα activation.
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Affiliation(s)
- Da-Woon Jung
- Department of Food Science and Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Da-Hyun Jeong
- Department of Food Science and Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Hee-Seok Lee
- Department of Food Science and Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea; Department of Food Safety and Regulatory Science, Chung-Ang University, Anseong 17546, Republic of Korea.
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15
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Li R, Yang L, Li S, Chen S, Ren Y, Shen L, Dong L, Chen X, Li J, Xu M. C/EBPα alleviates hepatic ischemia-reperfusion injury by inhibiting endoplasmic reticulum stress via HDAC1-mediated deacetylation of ATF4. J Biochem Mol Toxicol 2024; 38:e23630. [PMID: 38229308 DOI: 10.1002/jbt.23630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 01/18/2024]
Abstract
Hepatic ischemia-reperfusion (IR) injury is a complex systemic process causing a series clinical problem. C/EBPα is a key transcription factor for hepatocyte function, but its role and mechanism in regulating hepatic IR injury are largely unknown. Occluding portal vein and hepatic artery was used to establish a mouse model of hepatic IR injury. C/EBPα expression was decreased in IR-injured liver compared with the sham, accompanied by increased contents of serum alanine transaminase (ALT), aspartate transaminase (AST), high mobility group box-1, and proportion of hepatic cells. Oxygen and glucose deprivation/recovery (OGD/R) was used to establish a cellular hepatic IR model in WRL-68 hepatocytes in vitro, and C/EBPα was overexpressed in the hepatocytes to evaluate its effect on hepatic IR injury. OGD/R promoted oxidative stress, cell apoptosis and endoplasmic reticulum (ER) stress in hepatocytes, which was reversed by C/EBPα overexpression. Then, we found that C/EBPα promoted histone deacetylase 1 (HDAC1) transcription through binding to HDAC1 promoter. Moreover, HDAC1 deacetylated the activating transcription factor 4 (ATF4), a key positive regulator of ER stress. Trichostatin-A (an HDAC inhibitor) or ATF4 overexpression reversed the improvement of C/EBPα on OGD/R-induced ER stress and hepatocyte dysfunction. 4-Phenylbutyric acid (an endoplasmic reticulum stress inhibitor) also reversed the hepatic IR injury induced by ATF4 overexpression. Finally, lentivirus-mediated C/EBPα overexpression vector was applied to administrate hepatic IR mice, and the results showed that C/EBPα overexpression ameliorated IR-induced hepatic injury, manifesting with reduced ALT/AST, oxidative stress and ER stress. Altogether, our findings suggested that C/EBPα ameliorated hepatic IR injury by inhibiting ER stress via HDAC1-mediated deacetylation of ATF4 promoter.
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Affiliation(s)
- Rong Li
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Longbao Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Shunle Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Shuo Chen
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Yifan Ren
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Lin Shen
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Lei Dong
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Xi Chen
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Junhui Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
| | - Meng Xu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an JiaoTong University, Xi'an, People's Republic of China
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16
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Feng R, Tong C, Lin T, Liu H, Shao C, Li Y, Sticht C, Kan K, Li X, Liu R, Wang S, Wang S, Munker S, Niess H, Meyer C, Liebe R, Ebert MP, Dooley S, Wang H, Ding H, Weng HL. Insulin Determines Transforming Growth Factor β Effects on Hepatocyte Nuclear Factor 4α Transcription in Hepatocytes. Am J Pathol 2024; 194:52-70. [PMID: 37820926 DOI: 10.1016/j.ajpath.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/19/2023] [Accepted: 09/12/2023] [Indexed: 10/13/2023]
Abstract
Loss of hepatocyte nuclear factor 4α (HNF4α) expression is frequently observed in end-stage liver disease and associated with loss of vital liver functions, thus increasing mortality. Loss of HNF4α expression is mediated by inflammatory cytokines, such as transforming growth factor (TGF)-β. However, details of how HNF4α is suppressed are largely unknown to date. Herein, TGF-β did not directly inhibit HNF4α but contributed to its transcriptional regulation by SMAD2/3 recruiting acetyltransferase CREB-binding protein/p300 to the HNF4α promoter. The recruitment of CREB-binding protein/p300 is indispensable for CCAAT/enhancer-binding protein α (C/EBPα) binding, another essential requirement for constitutive HNF4α expression in hepatocytes. Consistent with the in vitro observation, 67 of 98 patients with hepatic HNF4α expressed both phospho-SMAD2 and C/EBPα, whereas 22 patients without HNF4α expression lacked either phospho-SMAD2 or C/EBPα. In contrast to the observed induction of HNF4α, SMAD2/3 inhibited C/EBPα transcription. Long-term TGF-β incubation resulted in C/EBPα depletion, which abrogated HNF4α expression. Intriguingly, SMAD2/3 inhibitory binding to the C/EBPα promoter was abolished by insulin. Two-thirds of patients without C/EBPα lacked membrane glucose transporter type 2 expression in hepatocytes, indicating insulin resistance. Taken together, these data indicate that hepatic insulin sensitivity is essential for hepatic HNF4α expression in the condition of inflammation.
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Affiliation(s)
- Rilu Feng
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Chenhao Tong
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Tao Lin
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Hui Liu
- Department of Pathology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Chen Shao
- Department of Pathology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Yujia Li
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Carsten Sticht
- NGS Core Facility, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Kejia Kan
- Department of Surgery, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Xiaofeng Li
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Rui Liu
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Sai Wang
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Shanshan Wang
- Beijing Institute of Hepatology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Stefan Munker
- Department of Medicine II, Liver Centre Munich, University Hospital, Campus Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany; Liver Centre Munich, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Hanno Niess
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany; Biobank of the Department of General, Visceral and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christoph Meyer
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Roman Liebe
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke-University, Magdeburg, Germany
| | - Matthias P Ebert
- Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Clinical Cooperation Unit Healthy Metabolism, Center of Preventive Medicine and Digital Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Steven Dooley
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Hua Wang
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Huiguo Ding
- Department of Gastroenterology and Hepatology, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Hong-Lei Weng
- Section Molecular Hepatology, Department of Medicine II, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
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17
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Li R, Zhu R, Yang X, Feng Y, He Q, Wang H, Liu Q, Shi D, Huang J. The role of lncFABP4 in modulating adipogenic differentiation in buffalo intramuscular preadipocytes. Anim Sci J 2024; 95:e13951. [PMID: 38703069 DOI: 10.1111/asj.13951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/06/2024] [Accepted: 03/13/2024] [Indexed: 05/06/2024]
Abstract
Intramuscular fat (IMF) is a crucial determinant of meat quality and is influenced by various regulatory factors. Despite the growing recognition of the important role of long noncoding RNAs (lncRNAs) in IMF deposition, the mechanisms underlying buffalo IMF deposition remain poorly understood. In this study, we identified and characterized a lncRNA, lncFABP4, which is transcribed from the antisense strand of fatty acid-binding protein 4 (FABP4). lncFABP4 inhibited cell proliferation in buffalo intramuscular preadipocytes. Moreover, lncFABP4 significantly increased intramuscular preadipocyte differentiation, as indicated by an increase in the expression of the adipogenic markers peroxisome proliferator-activated receptor gamma (PPARG), CCAAT enhancer binding protein alpha (C/EBPα), and FABP4. Mechanistically, lncFABP4 was found to have the potential to regulate downstream gene expression by participating in protein-protein interaction pathways. These findings contribute to further understanding of the intricate mechanisms through which lncRNAs modulate intramuscular adipogenesis in buffaloes.
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Affiliation(s)
- Ruirui Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Ruirui Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Xintong Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Ye Feng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Qin He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Haopeng Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Qingyou Liu
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
| | - Jieping Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, China
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18
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Ma Z, Chen Y, Qiu J, Guo R, Cai K, Zheng Y, Zhang Y, Li X, Zan L, Li A. CircBTBD7 inhibits adipogenesis via the miR-183/SMAD4 axis. Int J Biol Macromol 2023; 253:126740. [PMID: 37689299 DOI: 10.1016/j.ijbiomac.2023.126740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 08/13/2023] [Accepted: 08/25/2023] [Indexed: 09/11/2023]
Abstract
Adipogenesis is a complex biological process. However, the regulatory mechanism of circRNAs in adipogenesis is still unclear. In this study, we identified a novel circRNA, circBTBD7, which was highly expressed in adipose tissue and peaked at two days after differentiation in bovine primary adipocytes. When circBTBD7 was knocked down in bovine primary adipocytes, the lipid droplets accumulation was significantly increased. Furthermore, the expression of adipocyte differentiation markers (PPARγ and C/EBPα) and lipogenic genes (FABP4, FASN and ACCα) were significantly upregulated. Moreover, circBTBD7 was mainly located in the cytoplasm, which indicated it was probably to act as competitive endogenous RNAs (ceRNAs). Subsequently, the dual luciferase reporter assay showed that circBTBD7 could bind to miR-183. Further, miR-183 promoted adipogenesis by inhibiting SMAD4. What's more, the rescue assays showed that circBTBD7 attenuated the inhibition of SMAD4 expression by sponging miR-183. In summary, these results suggested that circBTBD7 inhibited adipogenesis via the miR-183/SMAD4 axis.
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Affiliation(s)
- Zheng Ma
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yun Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Ju Qiu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Rui Guo
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Keli Cai
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yan Zheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yuyao Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xueqing Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China; National Beef Cattle Improvement Center, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - Anning Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, PR China; National Beef Cattle Improvement Center, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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19
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Zhu YN, Pan F, Gan XW, Liu Y, Wang WS, Sun K. The Role of DNMT1 and C/EBPα in the Regulation of CYP11A1 Expression During Syncytialization of Human Placental Trophoblasts. Endocrinology 2023; 165:bqad195. [PMID: 38146648 DOI: 10.1210/endocr/bqad195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 12/27/2023]
Abstract
Progesterone synthesized in the placenta is essential for pregnancy maintenance. CYP11A1 is a key enzyme in progesterone synthesis, and its expression increases greatly during trophoblast syncytialization. However, the underlying mechanism remains elusive. Here, we demonstrated that passive demethylation of CYP11A1 promoter accounted for the upregulation of CYP11A1 expression during syncytialization with the participation of the transcription factor C/EBPα. We found that the methylation rate of a CpG locus in the CYP11A1 promoter was significantly reduced along with decreased DNA methyltransferase 1 (DNMT1) expression and its enrichment at the CYP11A1 promoter during syncytialization. DNMT1 overexpression not only increased the methylation of this CpG locus in the CYP11A1 promoter, but also decreased CYP11A1 expression and progesterone production. In silico analysis disclosed multiple C/EBPα binding sites in both CYP11A1 and DNMT1 promoters. C/EBPα expression and its enrichments at both the DNMT1 and CYP11A1 promoters were significantly increased during syncytialization. Knocking-down C/EBPα expression increased DNMT1 while it decreased CYP11A1 expression during syncytialization. Conclusively, C/EBPα plays a dual role in the regulation of CYP11A1 during syncytialization. C/EBPα not only drives CYP11A1 expression directly, but also indirectly through downregulation of DNMT1, which leads to decreased methylation in the CpG locus of the CYP11A1 promoter, resulting in increased progesterone production during syncytialization.
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Affiliation(s)
- Ya-Nan Zhu
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, P.R. China
- Center for Reproductive Medicine, Xiangyang Central Hospital, Hubei University of Arts and Science, Xiangyang, Hubei 441021, P.R. China
| | - Fan Pan
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, P.R. China
| | - Xiao-Wen Gan
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, P.R. China
| | - Yun Liu
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, P.R. China
| | - Wang-Sheng Wang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, P.R. China
| | - Kang Sun
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, P.R. China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200135, P.R. China
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20
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Yu C, Sautchuk R, Martinez J, Eliseev RA. Mitochondrial permeability transition regulator, cyclophilin D, is transcriptionally activated by C/EBP during adipogenesis. J Biol Chem 2023; 299:105458. [PMID: 37949231 PMCID: PMC10716586 DOI: 10.1016/j.jbc.2023.105458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/10/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023] Open
Abstract
Age-related bone loss is associated with decreased bone formation, increased bone resorption, and accumulation of bone marrow fat. During aging, differentiation potential of bone marrow stromal (a.k.a. mesenchymal stem) cells (BMSCs) is shifted toward an adipogenic lineage and away from an osteogenic lineage. In aged bone tissue, we previously observed pathological opening of the mitochondrial permeability transition pore (MPTP) which leads to mitochondrial dysfunction, oxidative phosphorylation uncoupling, and cell death. Cyclophilin D (CypD) is a mitochondrial protein that facilitates opening of the MPTP. We found earlier that CypD is downregulated during osteogenesis of BMSCs leading to lower MPTP activity and, thus, protecting mitochondria from dysfunction. However, during adipogenesis, a fate alternative to osteogenesis, the regulation of mitochondrial function and CypD expression is still unclear. In this study, we observed that BMSCs have increased CypD expression and MPTP activity, activated glycolysis, and fragmented mitochondrial network during adipogenesis. Adipogenic C/EBPα acts as a transcriptional activator of expression of the CypD gene, Ppif, during this process. Inflammation-associated transcription factor NF-κB shows a synergistic effect with C/EBPα inducing Ppif expression. Overall, we demonstrated changes in mitochondrial morphology and function during adipogenesis. We also identified C/EBPα as a transcriptional activator of CypD. The synergistic activation of CypD by C/EBPα and the NF-κB p65 subunit during this process suggests a potential link between adipogenic signaling, inflammation, and MPTP gain-of-function, thus altering BMSC fate during aging.
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Affiliation(s)
- Chen Yu
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York, USA; Department of Pathology, University of Rochester, Rochester, New York, USA
| | - Rubens Sautchuk
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York, USA
| | - John Martinez
- Department of Biology, University of Rochester, Rochester, New York, USA
| | - Roman A Eliseev
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York, USA; Department of Pathology, University of Rochester, Rochester, New York, USA; Department of Pharmacology & Physiology, University of Rochester, Rochester, New York, USA.
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21
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Hanlon MA, Gulati R, Johnston M, Fleifil Y, Rivas M, Timchenko NA. Genetic Ablation of C/EBPα-p300 Pathway Blocks Development of Obese Pregnancy Associated Liver Disorders in Offspring. Cell Mol Gastroenterol Hepatol 2023; 17:347-360. [PMID: 37967813 PMCID: PMC10821535 DOI: 10.1016/j.jcmgh.2023.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/17/2023]
Abstract
BACKGROUND & AIMS The obesity-associated nonalcoholic fatty liver disease represents a common cause of pediatric liver diseases, including the pediatric liver cancer hepatoblastoma. The mechanisms behind the development of fatty liver in children are not yet known. We examined the role of the C/EBPα-p300 pathway in the development of maternal obesity-associated fatty liver phenotype in offspring. METHODS Because the ability of C/EBPα to promote fatty liver phenotype is enhanced by CDK4-mediated phosphorylation of C/EBPα at Ser193 and subsequent formation of C/EBPα-p300 complexes, we used wild-type (WT) and C/EBPα-S193D and C/EBPα-S193A mutant mice to study the effects of maternal high-fat diet (HFD) on the liver health of offspring. The females of these mouse lines were fed an HFD before mating, and the pups were further subjected to either an HFD or a normal diet for 12 weeks. RESULTS WT female mice on the HFD before and during pregnancy and their subsequent offspring on the HFD had severe fatty liver, fibrosis, and an increased rate of liver proliferation. However, the HFD in C/EBPα-S193A mice did not cause development of these disorders. In HFD-HFD treated WT mice, C/EBPα is phosphorylated at Ser193 and forms complexes with p300, which activate expression of genes involved in development of fatty liver, fibrosis, and proliferation. However, S193A-C/EBPα mice do not have complexes of C/EBPα-S193A with p300, leading to a lack of activation of genes of fatty liver, fibrosis, and proliferation. The mutant C/EBPα-S193D mice have accelerated cdk4-dependent pathway and have developed steatosis at early stages. CONCLUSIONS These studies identified the epigenetic cause of obese pregnancy-associated liver diseases and suggest a potential therapy based on inhibition of cdk4-ph-S193-C/EBPα-p300 pathway.
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Affiliation(s)
- Margaret A Hanlon
- Division of General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Ruhi Gulati
- Division of General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Michael Johnston
- Division of General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Surgery, University of Cincinnati, Cincinnati, Ohio
| | - Yasmeen Fleifil
- Division of General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Maria Rivas
- Institute of Biosciences, University of São Paulo (USP) Cidade Universitária, Butantã, São Paulo, Brazil
| | - Nikolai A Timchenko
- Division of General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Surgery, University of Cincinnati, Cincinnati, Ohio.
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22
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An M, Lim YH. Surface-exposed chaperonin 60 derived from Propionibacterium freudenreichii MJ2 inhibits adipogenesis by decreasing the expression of C/EBPα/PPARγ. Sci Rep 2023; 13:19251. [PMID: 37935755 PMCID: PMC10630399 DOI: 10.1038/s41598-023-46436-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 11/01/2023] [Indexed: 11/09/2023] Open
Abstract
Recent studies have shown that the health benefits of probiotics are not limited to those offered by living bacteria. It was reported that both live and killed cells of Propionibacterium freudenreichii MJ2 (MJ2) isolated from raw milk showed antiobesity activity in 3T3-L1 cells and high-fat diet-induced obese mice. This study was aimed at identifying the active component(s) responsible for the antiadipogenic activity of MJ2. Cell wall, surface protein, and cytoplasmic fractions of MJ2 were investigated for their inhibitory effects on adipogenesis in 3T3-L1 cells. Adipocytes treated with the surface protein fraction showed significantly lower lipid accumulation. Using the MASCOT algorithm following LC-MS/MS analysis, 131 surface proteins were identified and they were principally classified into three categories (network clusters related to ribosomes, carbon metabolism, and chaperones). Among them, chaperonin 60 (Cpn60) was selected as a potential candidate protein. Cpn60 inhibited lipid accumulation and adipogenesis during the early period of differentiation (days 0-2) and decreased expression of genes related to adipogenesis (Pparg and Cebpa) and lipogenesis (Fas and Scd1). The expression of Gata2/3, which suppresses adipogenesis, significantly increased in Cpn60-treated cells. Moreover, the nuclear translocation of C/EBPβ was inhibited by Cpn60 treatment. In conclusion, Cpn60, a surface protein in MJ2, shows antiadipogenic activity by reducing the expression of C/EBPβ through the upregulation of Gata2/3 expression followed by downregulation of Pparg and Cebpa expression.
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Affiliation(s)
- Mirae An
- Department of Healthcare Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Young-Hee Lim
- Department of Healthcare Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea.
- School of Biosystems and Biomedical Sciences, Korea University, Seoul, 02841, Republic of Korea.
- Department of Laboratory Medicine, Korea University Guro Hospital, Seoul, 08308, Republic of Korea.
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23
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Huang X, Liu X, Lin J. Methylation of lncSHGL promotes adipocyte differentiation by regulating miR-149/Mospd3 axis. Cell Cycle 2023; 22:2361-2380. [PMID: 38057958 PMCID: PMC10802194 DOI: 10.1080/15384101.2023.2287367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 11/10/2023] [Indexed: 12/08/2023] Open
Abstract
Obesity poses significant health risks and can negatively impact an individual's quality of life. The human obesity phenotype results from the differentiation of pre-adipocytes into adipocytes, which leads to hypertrophy and hyperplasia in adipose tissue. The molecular mechanisms by which long non-coding RNAs (lncRNAs) modulate adipocyte differentiation, a process implicated in obesity development, remain poorly characterized. A lncRNA which suppressed the hepatic gluconeogenesis and lipogenesis (lncSHGL) was newly identified. Our research aims to elucidate the functional role and mechanistic underpinnings of suppressor of lncSHGL in adipocyte differentiation. We observed that lncSHGL expression progressively diminished during 3T3-L1 differentiation and was downregulated in the liver and perirenal adipose tissue of ob/ob mice. lncSHGL acts as a molecular sponge for miR-149, with Mospd3 identified as a target of miR-149.Overexpression of lncSHGL and inhibition of miR-149 led to suppressed 3T3-L1 proliferation, decreased lipid droplet accumulation, and attenuated promoter activity of PPARγ2 and C/EBPα. These changes consequently resulted in reduced expression of Cyclin D1, LPL, PPARγ2, AP2, and C/EBPα, as well as inhibited the PI3K/AKT/mTOR signaling pathway. In contrast, lncSHGL suppression yielded opposing outcomes. Moreover, the effects of lncSHGL overexpression and miR-149 inhibition on reduced expression of Cyclin D1, LPL, PPARγ2, AP2, and C/EBPα were reversible upon miR-149 overexpression and Mospd3 suppression. These findings were further validated in vivo. We also discovered a significant increase in methylation levels during 3T3-L1 differentiation, with lncSHGL highly expressed in the presence of a methylation inhibitor. In conclusion. lncSHGL methylation facilitates adipocyte differentiation by modulating the miR-149/Mospd3 axis. Targeting lncSHGL expression may represent a promising therapeutic strategy for obesity-associated adipogenesis, particularly in the context of fatty liver disease.
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Affiliation(s)
- Xianwei Huang
- Emergency Department, The First Affiliated Hospital of Xiamen University, Xiamen, China
- Emergency Department, Xiamen Key Laboratory for Clinical Efficacy and Evidence-Based Research of Traditional Chinese Medicine, Xiamen, China
| | - Xiong Liu
- Emergency Department, The First Affiliated Hospital of Xiamen University, Xiamen, China
- Emergency Department, Xiamen Key Laboratory for Clinical Efficacy and Evidence-Based Research of Traditional Chinese Medicine, Xiamen, China
| | - Jiyan Lin
- Emergency Department, The First Affiliated Hospital of Xiamen University, Xiamen, China
- Emergency Department, Xiamen Key Laboratory for Clinical Efficacy and Evidence-Based Research of Traditional Chinese Medicine, Xiamen, China
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24
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Wang D, Sun T, Xia Y, Zhao Z, Sheng X, Li S, Ma Y, Li M, Su X, Zhang F, Li P, Ma D, Ye J, Lu F, Ji C. Homodimer-mediated phosphorylation of C/EBPα-p42 S16 modulates acute myeloid leukaemia differentiation through liquid-liquid phase separation. Nat Commun 2023; 14:6907. [PMID: 37903757 PMCID: PMC10616288 DOI: 10.1038/s41467-023-42650-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 10/09/2023] [Indexed: 11/01/2023] Open
Abstract
CCAAT/enhancer binding protein α (C/EBPα) regulates myeloid differentiation, and its dysregulation contributes to acute myeloid leukaemia (AML) progress. Clarifying its functional implementation mechanism is of great significance for its further clinical application. Here, we show that C/EBPα regulates AML cell differentiation through liquid-liquid phase separation (LLPS), which can be disrupted by C/EBPα-p30. Considering that C/EBPα-p30 inhibits the functions of C/EBPα through the LZ region, a small peptide TAT-LZ that could instantaneously interfere with the homodimerization of C/EBPα-p42 was constructed, and dynamic inhibition of C/EBPα phase separation was observed, demonstrating the importance of C/EBPα-p42 homodimers for its LLPS. Mechanistically, homodimerization of C/EBPα-p42 mediated its phosphorylation at the novel phosphorylation site S16, which promoted LLPS and subsequent AML cell differentiation. Finally, decreasing the endogenous C/EBPα-p30/C/EBPα-p42 ratio rescued the phase separation of C/EBPα in AML cells, which provided a new insight for the treatment of the AML.
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Affiliation(s)
- Dongmei Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tao Sun
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yuan Xia
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Zhe Zhao
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xue Sheng
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Shuying Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yuechan Ma
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Mingying Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiuhua Su
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Fan Zhang
- Department of Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Peng Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Daoxin Ma
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jingjing Ye
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Fei Lu
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
| | - Chunyan Ji
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
- Shandong Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
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25
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Li Y, Yao L, Lu J. IL-35 inhibits adipogenesis via PPARγ-Wnt/β-catenin signaling pathway by targeting Axin2. Int Immunopharmacol 2023; 122:110615. [PMID: 37429144 DOI: 10.1016/j.intimp.2023.110615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/24/2023] [Accepted: 07/04/2023] [Indexed: 07/12/2023]
Abstract
Interleukin (IL)-35, a member of the IL-12 family, functions as an immunosuppressive cytokine that plays a crucial role in the regulation of immune-related disorders and inflammatory diseases. Adipose tissue, which is now recognized as an immune organ, is regulated by immunocytes through various signaling pathways, including the peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer-binding protein α (C/EBPα) pathway and the Wnt/β-actin pathway. However, there is limited research regarding the effects of IL-35 on adipogenesis. Our current findings indicated that IL-35 impedes the proliferation and promotes the cytotoxicity of 3T3-L1 preadipocytes. Furthermore, IL-35 inhibited the adipogenic differentiation, as well as suppressed triglyceride and lipid accumulation. Additionally, the expression of PPARγ and C/EBPα, two key regulators of adipogenesis, were both down-regulated with IL-35 treatment. In order to explicate the mechanisms underlying the effects of IL-35, we conducted an investigation into the expression of Axin2, an intracellular inhibitor of Wnt/β-catenin signaling, in 3T3-L1 preadipocyte cells. Gene silencing of Axin2 through small interfering RNAs (siRNAs) enhanced PPARγ and C/EBPα expression while decreasing nuclear β-catenin levels in the presence of IL-35. Furthermore, in IL-35-treated cells, Axin2 knockdown boosted adipogenic differentiation (as measured by increased Oil Red O staining). These findings imply that IL-35 regulates Axin2 expression and thereby plays an important role in adipocyte development.
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Affiliation(s)
- Yuxuan Li
- Department of Rheumatology and Immunology, Shengjing Hospital of China Medical University, No. 36 San Hao Street, Heping District, Shenyang, 110004, PR China
| | - Lutian Yao
- Department of Orthopedics, The First Hospital of China Medical University, 155 Nanjing North Street, Heping District, Shenyang 110001, PR China.
| | - Jing Lu
- Department of Rheumatology and Immunology, The First Hospital of China Medical University, 155 Nanjing North Street, Heping District, Shenyang, 110001, PR China.
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26
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Garcia-Cuellar MP, Akan S, Slany RK. A C/ebpα isoform specific differentiation program in immortalized myelocytes. Leukemia 2023; 37:1850-1859. [PMID: 37532789 PMCID: PMC10457184 DOI: 10.1038/s41375-023-01989-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/18/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023]
Abstract
The transcription factor CCAAT-enhancer binding factor alpha (C/ebpα) is a master controller of myeloid differentiation that is expressed as long (p42) and short (p30) isoform. Mutations within the CEBPA gene selectively deleting p42 are frequent in human acute myeloid leukemia. Here we investigated the individual genomics and transcriptomics of p42 and p30. Both proteins bound to identical sites across the genome. For most targets, they induced a highly similar transcriptional response with the exception of a few isoform specific genes. Amongst those we identified early growth response 1 (Egr1) and tribbles1 (Trib1) as key targets selectively induced by p42 that are also underrepresented in CEBPA-mutated AML. Egr1 executed a program of myeloid differentiation and growth arrest. Oppositely, Trib1 established a negative feedback loop through activation of Erk1/2 kinase thus placing differentiation under control of signaling. Unexpectedly, differentiation elicited either by removal of an oncogenic input or by G-CSF did not peruse C/ebpα as mediator but rather directly affected the cell cycle core by upregulation of p21/p27 inhibitors. This points to functions downstream of C/ebpα as intersection point where transforming and differentiation stimuli converge and this finding offers a new perspective for therapeutic intervention.
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Affiliation(s)
| | - Selin Akan
- Department of Genetics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Robert K Slany
- Department of Genetics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany.
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27
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Omori K, Otani S, Date Y, Ueno T, Ito T, Umeda M, Ito K. C/ebpα represses the oncogenic Runx3-Myc axis in p53-deficient osteosarcoma development. Oncogene 2023; 42:2485-2494. [PMID: 37402881 DOI: 10.1038/s41388-023-02761-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 06/14/2023] [Accepted: 06/22/2023] [Indexed: 07/06/2023]
Abstract
Osteosarcoma (OS) is characterized by TP53 mutations in humans. In mice, loss of p53 triggers OS development, and osteoprogenitor-specific p53-deleted mice are widely used to study the process of osteosarcomagenesis. However, the molecular mechanisms underlying the initiation or progression of OS following or parallel to p53 inactivation remain largely unknown. Here, we examined the role of transcription factors involved in adipogenesis (adipo-TFs) in p53-deficient OS and identified a novel tumor suppressive molecular mechanism mediated by C/ebpα. C/ebpα specifically interacts with Runx3, a p53 deficiency-dependent oncogene, and, in the same manner as p53, decreases the activity of the oncogenic axis of OS, Runx3-Myc, by inhibiting Runx3 DNA binding. The identification of a novel molecular role for C/ebpα in p53-deficient osteosarcomagenesis underscores the importance of the Runx-Myc oncogenic axis as a therapeutic target for OS.
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Affiliation(s)
- Keisuke Omori
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Shohei Otani
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Yuki Date
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Tomoya Ueno
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Tomoko Ito
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Kosei Ito
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.
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28
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Sabatier M, Birsen R, Lauture L, Mouche S, Angelino P, Dehairs J, Goupille L, Boussaid I, Heiblig M, Boet E, Sahal A, Saland E, Santos JC, Armengol M, Fernández-Serrano M, Farge T, Cognet G, Simonetta F, Pignon C, Graffeuil A, Mazzotti C, Avet-Loiseau H, Delos O, Bertrand-Michel J, Chedru A, Dembitz V, Gallipoli P, Anstee NS, Loo S, Wei AH, Carroll M, Goubard A, Castellano R, Collette Y, Vergez F, Mansat-De Mas V, Bertoli S, Tavitian S, Picard M, Récher C, Bourges-Abella N, Granat F, Kosmider O, Sujobert P, Colsch B, Joffre C, Stuani L, Swinnen JV, Guillou H, Roué G, Hakim N, Dejean AS, Tsantoulis P, Larrue C, Bouscary D, Tamburini J, Sarry JE. C/EBPα Confers Dependence to Fatty Acid Anabolic Pathways and Vulnerability to Lipid Oxidative Stress-Induced Ferroptosis in FLT3-Mutant Leukemia. Cancer Discov 2023; 13:1720-1747. [PMID: 37012202 DOI: 10.1158/2159-8290.cd-22-0411] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 01/19/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023]
Abstract
Although transcription factor CCAAT-enhancer binding protein α (C/EBPα) is critical for normal and leukemic differentiation, its role in cell and metabolic homeostasis is largely unknown in cancer. Here, multiomics analyses uncovered a coordinated activation of C/EBPα and Fms-like tyrosine kinase 3 (FLT3) that increased lipid anabolism in vivo and in patients with FLT3-mutant acute myeloid leukemia (AML). Mechanistically, C/EBPα regulated the fatty acid synthase (FASN)-stearoyl-CoA desaturase (SCD) axis to promote fatty acid (FA) biosynthesis and desaturation. We further demonstrated that FLT3 or C/EBPα inactivation decreased monounsaturated FA incorporation to membrane phospholipids through SCD downregulation. Consequently, SCD inhibition enhanced susceptibility to lipid redox stress that was exploited by combining FLT3 and glutathione peroxidase 4 inhibition to trigger lipid oxidative stress, enhancing ferroptotic death of FLT3-mutant AML cells. Altogether, our study reveals a C/EBPα function in lipid homeostasis and adaptation to redox stress, and a previously unreported vulnerability of FLT3-mutant AML to ferroptosis with promising therapeutic application. SIGNIFICANCE FLT3 mutations are found in 30% of AML cases and are actionable by tyrosine kinase inhibitors. Here, we discovered that C/EBPα regulates FA biosynthesis and protection from lipid redox stress downstream mutant-FLT3 signaling, which confers a vulnerability to ferroptosis upon FLT3 inhibition with therapeutic potential in AML. This article is highlighted in the In This Issue feature, p. 1501.
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Affiliation(s)
- Marie Sabatier
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Rudy Birsen
- Translational Research Centre in Onco-Hematology, Faculty of Medicine, University of Geneva, and Swiss Cancer Center Leman, Geneva, Switzerland
- Université de Paris, Institut Cochin, CNRS U8104, Inserm U1016, Paris, France
- Equipe Labellisée Ligue Nationale Contre le Cancer, Paris, France
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Service d'Hématologie Clinique, Paris, France
| | - Laura Lauture
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Sarah Mouche
- Translational Research Centre in Onco-Hematology, Faculty of Medicine, University of Geneva, and Swiss Cancer Center Leman, Geneva, Switzerland
| | - Paolo Angelino
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Jonas Dehairs
- Laboratory of Lipid Metabolism and Cancer, Department of Oncology, LKI-Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Léa Goupille
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Ismael Boussaid
- Université de Paris, Institut Cochin, CNRS U8104, Inserm U1016, Paris, France
- Equipe Labellisée Ligue Nationale Contre le Cancer, Paris, France
| | - Maël Heiblig
- Hospices Civils de Lyon, Hôpital Lyon Sud, Lyon, France
- CIRI, Inserm U1111 CNRS 5308, Université Lyon 1, Lyon, France
| | - Emeline Boet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Ambrine Sahal
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Estelle Saland
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Juliana C Santos
- Lymphoma Translational Group, Josep Carreras Leukaemia Research Institute, Badalona, Spain
| | - Marc Armengol
- Lymphoma Translational Group, Josep Carreras Leukaemia Research Institute, Badalona, Spain
| | | | - Thomas Farge
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Guillaume Cognet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Federico Simonetta
- Translational Research Centre in Onco-Hematology, Faculty of Medicine, University of Geneva, and Swiss Cancer Center Leman, Geneva, Switzerland
| | - Corentin Pignon
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Antoine Graffeuil
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Céline Mazzotti
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Hervé Avet-Loiseau
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Océane Delos
- MetaboHUB-MetaToul, National Infrastructure of Metabolomics and Fluxomics, University Paul Sabatier, Toulouse, France
| | - Justine Bertrand-Michel
- MetaboHUB-MetaToul, National Infrastructure of Metabolomics and Fluxomics, University Paul Sabatier, Toulouse, France
| | - Amélie Chedru
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, MetaboHUB, Gif sur Yvette, France
| | - Vilma Dembitz
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Paolo Gallipoli
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Natasha S Anstee
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Sun Loo
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
- Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Australia
| | - Andrew H Wei
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Australia
- Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Australia
| | - Martin Carroll
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Armelle Goubard
- Aix-Marseille University, Inserm, CNRS, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Rémy Castellano
- Aix-Marseille University, Inserm, CNRS, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Yves Collette
- Aix-Marseille University, Inserm, CNRS, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - François Vergez
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Véronique Mansat-De Mas
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Sarah Bertoli
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Suzanne Tavitian
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | - Muriel Picard
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service de Réanimation, Toulouse, France
| | - Christian Récher
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse Oncopole, Service d'Hématologie, Toulouse, France
| | | | - Fanny Granat
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Olivier Kosmider
- Université de Paris, Institut Cochin, CNRS U8104, Inserm U1016, Paris, France
- Equipe Labellisée Ligue Nationale Contre le Cancer, Paris, France
| | - Pierre Sujobert
- Hospices Civils de Lyon, Hôpital Lyon Sud, Lyon, France
- CIRI, Inserm U1111 CNRS 5308, Université Lyon 1, Lyon, France
| | - Benoit Colsch
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, MetaboHUB, Gif sur Yvette, France
| | - Carine Joffre
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Lucille Stuani
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Johannes V Swinnen
- Laboratory of Lipid Metabolism and Cancer, Department of Oncology, LKI-Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Hervé Guillou
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, University Paul Sabatier, Toulouse, France
| | - Gael Roué
- Lymphoma Translational Group, Josep Carreras Leukaemia Research Institute, Badalona, Spain
| | - Nawad Hakim
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITy), Inserm UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse, France
| | - Anne S Dejean
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITy), Inserm UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse, France
| | - Petros Tsantoulis
- Translational Research Centre in Onco-Hematology, Faculty of Medicine, University of Geneva, and Swiss Cancer Center Leman, Geneva, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Clément Larrue
- Translational Research Centre in Onco-Hematology, Faculty of Medicine, University of Geneva, and Swiss Cancer Center Leman, Geneva, Switzerland
| | - Didier Bouscary
- Université de Paris, Institut Cochin, CNRS U8104, Inserm U1016, Paris, France
- Equipe Labellisée Ligue Nationale Contre le Cancer, Paris, France
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris Centre, Service d'Hématologie Clinique, Paris, France
| | - Jerome Tamburini
- Translational Research Centre in Onco-Hematology, Faculty of Medicine, University of Geneva, and Swiss Cancer Center Leman, Geneva, Switzerland
- Université de Paris, Institut Cochin, CNRS U8104, Inserm U1016, Paris, France
- Equipe Labellisée Ligue Nationale Contre le Cancer, Paris, France
| | - Jean-Emmanuel Sarry
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm U1037, CNRS U5077, Toulouse, France
- LabEx Toucan, Toulouse, France
- Équipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
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29
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Liang Chen , Yu Han , Jing Li , Chunpeng Feng , Chen Chen , Ting Ye . Xiao-Gao-Jiang-Zhuo-containing serum inhibits adipogenesis through SIRT1-IGF-1 crosstalk in 3T3-L1 preadipocytes. Pak J Pharm Sci 2023; 36:773-782. [PMID: 37580925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
PPARγ, CEBP/α, and SREBP1C are the major transcriptional factors participating in adipogenesis and lipogenesis. SIRT1 and IGF-1 signaling pathways are important pathways involved in body endocrine and metabolism. Our unique Chinese herbal medicine Xiao-Gao-Jiang-Zhuo (XGJZ) has a remarkable clinical effect on obesity. However, the molecular basis remains unknown. XGJZ-containing serum was treated in the incubation of 3T3-L1 preadipocytes to observe its function in the 3T3-L1 cell differentiation. Oil Red O staining was used to monitor the lipid droplets accumulated after 8 days of incubation. RT-qPCR and western blotting were used to investigate the regulatory effects of XGJZ-containing serum on adipogenesis-related factors. The protein levels of main molecules in SIRT1 and IGF-1 signaling pathways were also detected by western blotting. XGJZ-containing serum notably suppressed the lipid accumulation in differentiated adipocytes through SIRT1/IGF-1 pathway. XGJZ-containing serum activated the SIRT1/IGF-1 pathway and reduced the expression levels of PPARγ, CEBP/α, and SREBP1C through this pathway. Additionally, XGJZ-containing serum enhanced the phosphorylation of ATGL and HSL and then induced lipolysis. XGJZ-containing serum has inhibitory effects on adipogenesis in 3T3-L1 preadipocytes through SIRT1/IGF-1 signaling pathway. Our study affirmed the effect of XGJZ-containing serum in the treatment of obesity. It provides a basis for the mechanism of obesity.
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Affiliation(s)
- - Liang Chen
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - - Yu Han
- Hospital Administration Office, China Academy of Chinese Medical Sciences, Beijing, China
| | - - Jing Li
- Department of Endocrinology, Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, Urumqi, China
| | - - Chunpeng Feng
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - - Chen Chen
- Department of Endocrinology, Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, Urumqi, China
| | - - Ting Ye
- Department of Endocrinology, Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, Urumqi, China
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Lee EO, Joo HK, Lee YR, Kim S, Lee KH, Lee SD, Jeon BH. APE1/Ref-1 Inhibits Adipogenic Transcription Factors during Adipocyte Differentiation in 3T3-L1 Cells. Int J Mol Sci 2023; 24:ijms24043251. [PMID: 36834665 PMCID: PMC9961804 DOI: 10.3390/ijms24043251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/26/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Apurinic/apyrimidinic endonuclease 1/redox factor-1 (APE1/Ref-1) is a multifunctional protein involved in DNA repair and redox regulation. The redox activity of APE1/Ref-1 is involved in inflammatory responses and regulation of DNA binding of transcription factors related to cell survival pathways. However, the effect of APE1/Ref-1 on adipogenic transcription factor regulation remains unknown. In this study, we investigated the effect of APE1/Ref-1 on the regulation of adipocyte differentiation in 3T3-L1 cells. During adipocyte differentiation, APE1/Ref-1 expression significantly decreased with the increased expression of adipogenic transcription factors such as CCAAT/enhancer binding protein (C/EBP)-α and peroxisome proliferator-activated receptor (PPAR)-γ, and the adipocyte differentiation marker adipocyte protein 2 (aP2) in a time-dependent manner. However, APE1/Ref-1 overexpression inhibited C/EBP-α, PPAR-γ, and aP2 expression, which was upregulated during adipocyte differentiation. In contrast, silencing APE1/Ref-1 or redox inhibition of APE1/Ref-1 using E3330 increased the mRNA and protein levels of C/EBP-α, PPAR-γ, and aP2 during adipocyte differentiation. These results suggest that APE1/Ref-1 inhibits adipocyte differentiation by regulating adipogenic transcription factors, suggesting that APE1/Ref-1 is a potential therapeutic target for regulating adipocyte differentiation.
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Affiliation(s)
- Eun-Ok Lee
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
| | - Hee-Kyoung Joo
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
| | - Yu-Ran Lee
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
| | - Sungmin Kim
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
| | - Kwon-Ho Lee
- Department of Physical Therapy, Joongbu University, 201 Daehak-ro, Geumsan-gun 32713, Chungcheongnam-do, Republic of Korea
| | - Sang-Do Lee
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
| | - Byeong-Hwa Jeon
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, 266 Munhwa-ro, Daejeon 35015, Jung-gu, Republic of Korea
- Correspondence: ; Tel.: +82-42-580-8214
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31
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Wu Z, Yu W, Ni W, Teng C, Ye W, Yu C, Zeng Y. Improvement of obesity by Liupao tea is through the IRS-1/PI3K/AKT/GLUT4 signaling pathway according to network pharmacology and experimental verification. Phytomedicine 2023; 110:154633. [PMID: 36628832 DOI: 10.1016/j.phymed.2022.154633] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 12/02/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Obesity is a state of accumulating excessive body fat, charactering by a high blood lipid and associating with various metabolic diseases. As a kind of dark tea, many studies revealed that long-term drinking Liupao tea (LT) can reduce weight (Liu et al., 2014). However, the anti-obesity mechanism and active ingredients of LT are not known. METHODS Liquid chromatography-mass spectrometry (LC-MS) combined with network pharmacology was used to screen the active components and related targets of Liupao tea water extract (LTWE). The key anti-obesity targets and pathways of LTWE were predicted by protein-protein interaction (PPI) networks, and enrichment analyses using Kyoto Encyclopedia of Genes and Genomes and Gene Ontology databases. Then, the active components selected by high-performance liquid chromatography (HPLC) fingerprinting were used together with LTWE in an adipogenic model and insulin resistance (IR) model in vitro. RESULTS Most of the compounds identified from LTWE were flavonofids, esters, and amides. Key targets such as RAC-alpha serine/threonine-protein kinase, insulin, and tumor necrosis factor (TNF) were involved in the phosphatidylinositol-3-kinase-protein kinase B (PI3K-AKT) signaling pathway, pathways in cancer, and other pathways. Four active components were screened by network pharmacology combined with HPLC fingerprinting. The in vitro experiment of LTWE and its four active components showed that in insulin-resistant 3T3-L1 cells, LTWE, (-)-epigallocatechin gallate (EGCG) and gallic acid (GA) inhibited adipocyte differentiation. Three factors could inhibit the differentiation of 3T3-L1 cells by decreasing gene expression of peroxisome proliferators-activated receptor γ (PPARγ), fatty acid synthase (FAS), CCAAT/enhancer binding proteins-α (C/EBPα) and interleukin-6 (IL-6). Caffeine and ellagic acid (EA) showed opposite results, but their effects on promoting adipose differentiation diminished with increasing concentrations of drug. In dexamethasone-induced insulin-resistant 3T3-L1 cells, the fluorescence intensity of 2-Deoxy-2-[(7-nitro-2,1,3-Benzoxadiazol-4-yl)amino]-d-glucose revealed that LTWE, GA, EGCG, caffeine, and EA significantly promoted glucose consumption. LTWE, GA, and EA improved insulin resistance in adipocytes by upregulating gene expression of insulin receptor substrate-1 (IRS-1), PI3K, AKT, and glucose transporter 4 (GLUT4). CONCLUSION LC-MS combined with network pharmacology preliminarianized that LTWE acts mainly on the PI3K-AKT signaling pathway. Cell experiments revealed that the anti-obesity effect of LTWE is the result of multi-component action, which inhibits the proliferation and differentiation of preadipocytes by regulating gene expression of adipogenic transcription factors and proinflammatory factors, and improves IR by activating the IRS-1/PI3K/AKT/GLUT4 pathway.
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Affiliation(s)
- Zhimin Wu
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Wenxin Yu
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Weiju Ni
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Cuiqin Teng
- Wuzhou Liupao Tea Research Institute, Wuzhou Institute of Agricultural Science, Guangxi Zhuang Autonomous Region 543002, China
| | - Weile Ye
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Cuiping Yu
- Wuzhou Liupao Tea Research Institute, Wuzhou Institute of Agricultural Science, Guangxi Zhuang Autonomous Region 543002, China
| | - Yu Zeng
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, China; State Key Laboratory of Dampness Syndrome of Chinese Medicine,The Second Affiliated Hospital of Guangzhou University of Chinese Medicine,Guangzhou 510006, China
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Kim HJ, Kim DH, Um SH. The Novel Inhibitory Effect of YM976 on Adipocyte Differentiation. Cells 2023; 12:cells12020205. [PMID: 36672141 PMCID: PMC9856710 DOI: 10.3390/cells12020205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/25/2022] [Accepted: 12/29/2022] [Indexed: 01/05/2023] Open
Abstract
The pyrimidine derivative YM976 (4-(3-chlorophenyl)-1,7-diethylpyrido(2,3-d)-pyrimidin-2(1H)-one) exerts anti-inflammatory and anti-asthmatic effects. Considering that accumulation of lipids in adipose tissue is accompanied by inflammation, we investigated whether YM976 affects adipocyte differentiation. We found that YM976 significantly decreased lipid accumulation without cytotoxicity and reduced the expression levels of peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer-binding protein α (C/EBPα) as well as their lipogenic regulators including fatty acid synthase (FASN) and fatty acid-binding protein 4 (FABP4) in 3T3-L1 cells induced for differentiation. YM976 mainly inhibited the early stage of adipocyte differentiation. Furthermore, intracellular cAMP level was elevated by YM976 resulting in increased phosphorylation of adenosine monophosphate-activated protein kinase (AMPK). Conversely, decreasing the levels of AMPK or treatment with Compound C, an AMPK inhibitor, lessened the suppressive effects of YM976 on PPARγ transcriptional activity and adipogenesis. Thus, our results suggest YM976 as a novel potential compound for controlling lipid accumulation and formation of adipocytes in obesity.
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Affiliation(s)
- Hee Jung Kim
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Samsung Medical Center, Sungkyunkwan University, Seoul 06351, Republic of Korea
| | - Dong-Hoon Kim
- Department of Pharmacology, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Sung Hee Um
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Samsung Medical Center, Sungkyunkwan University, Seoul 06351, Republic of Korea
- Biomedical Institute for Convergence (BICS) at Sungkyunkwan University, Suwon 16419, Republic of Korea
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Tian H, Luo J, Guo P, Li C, Zhang X. C/EBPα promotes triacylglycerol synthesis via regulating PPARG promoter activity in goat mammary epithelial cells. J Anim Sci 2023; 101:skac412. [PMID: 36547378 PMCID: PMC9863032 DOI: 10.1093/jas/skac412] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
CCAAT/enhancer binding protein α (C/EBPα) is the key transcription factor involved in lipid metabolism, however, the role of C/EBPα in milk fat synthesis of dairy goats remains unknown. The objective of the present research was to clarify the function of C/EBPα in goat mammary epithelial cells (GMECs) and its impact on peroxisome proliferator-activated receptor gamma (PPARG) promoter activity. In this study, C/EBPα overexpression increased its mRNA and protein levels by 42-fold and 6-fold, respectively. In contrast, transfecting siRNA targeting C/EBPα decreased its mRNA level to 20% and protein abundance to 80% of the basal level. The contents of lipid droplets, triacylglycerol (TAG), and cholesterol were increased (P < 0.05) in C/EBPα-overexpressing GMECs, and knockdown of C/EBPα led to the opposite results. Overexpression of C/EBPα significantly increased the expression levels of genes involved in TAG synthesis (AGPAT6, DGAT2, P < 0.01), lipid droplet formation (PLIN2, P < 0.01), and fatty acid synthesis (FADS2, P < 0.05; ELOVL6, P < 0.01). Knockdown of C/EBPα decreased (P < 0.05) the expression levels of AGPAT6, DGAT1, DGAT2, PLIN2, FADS2, and ELOVL6. C/EBPα upregulated the expression level of PPARG (P < 0.05), and four C/EBPα binding regions were identified in the PPARG promoter at -1,112 to -1,102 bp, -734 to -724 bp, -248 to -238 bp, and -119 to -109 bp. Knockdown of C/EBPα reduced (P < 0.05) the PPARG promoter activity when the C/EBPα binding regions were mutated at -1,112 to -1,102 bp, -734 to -724 bp, and -248 to -238 bp locations of the promoter. However, the promoter activity did not change when the mutation was located at -119 bp. In conclusion, our results suggest that C/EBPα can promote TAG synthesis in GMECs through its effects on mRNA abundance of genes related to lipid metabolism and regulation of the PPARG promoter activity via C/EBPα binding regions.
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Affiliation(s)
- Huibin Tian
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Jun Luo
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Peng Guo
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Chun Li
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Xueying Zhang
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, P. R. China
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Kim HJ, Lee DE, Park EC, Ra MJ, Jung SM, Yu JN, Um SH, Kim KH. Anti-Adipogenic Effects of Salicortin from the Twigs of Weeping Willow (Salix pseudolasiogyne) in 3T3-L1 Cells. Molecules 2022; 27:molecules27206954. [PMID: 36296558 PMCID: PMC9609119 DOI: 10.3390/molecules27206954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/03/2022] [Accepted: 10/10/2022] [Indexed: 11/16/2022] Open
Abstract
Salix pseudolasiogyne (Salicaceae), the “weeping willow,” has been used in traditional Korean medicine to treat pain and fever due to its high concentrations of salicylic acid and salicin. The present study investigated bioactive compounds from S. pseudolasiogyne twigs to discover bioactive natural products. Phytochemical investigation of the ethanol (EtOH) extract of S. pseudolasiogyne twigs followed by liquid chromatography–mass spectrometry (LC/MS)-based analysis led to the isolation of two salicin derivatives, salicortinol and salicortin, the structures of which were determined by interpretation of their NMR spectra and data from the LC/MS analysis. To the best of our knowledge, this is the first report of salicortinol isolated from S. pseudolasiogyne. The isolated compounds were evaluated for their anti-adipogenic effects in 3T3-L1 cells. Both salicortinol and salicortin were found to significantly inhibit adipocyte differentiation in 3T3-L1 cells. In particular, salicortin exhibited a strong inhibitory effect on lipid accumulation. Furthermore, salicortin inhibited the expression of lipogenic and adipogenic transcription factors, including FASN, FABP4, C/EBPα, C/EBPβ, and PPARγ, without inducing cytotoxicity. These results suggest that salicortin could be a potential therapeutic compound for the prevention or treatment of metabolic disorders such as obesity.
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Affiliation(s)
- Hee Jung Kim
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Samsung Medical Center, Sungkyunkwan University, Seoul 06351, Korea
| | - Da Eun Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Eon Chung Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Moon-Jin Ra
- Hongcheon Institute of Medicinal Herb, Hongcheon-gun 25142, Korea
| | - Sang-Mi Jung
- Hongcheon Institute of Medicinal Herb, Hongcheon-gun 25142, Korea
| | - Jeong-Nam Yu
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea
| | - Sung Hee Um
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 16419, Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Samsung Medical Center, Sungkyunkwan University, Seoul 06351, Korea
- Biomedical Institute Convergence, Sungkyunkwan University, Suwon 16419, Korea
- Correspondence: (S.H.U.); (K.H.K.); Tel.: +82-31-299-6123 (S.H.U.); +82-31-290-7700 (K.H.K.)
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
- Correspondence: (S.H.U.); (K.H.K.); Tel.: +82-31-299-6123 (S.H.U.); +82-31-290-7700 (K.H.K.)
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Lee SY, Chung KS, Son SR, Lee SY, Jang DS, Lee JK, Kim HJ, Na CS, Lee SH, Lee KT. A Botanical Mixture Consisting of Inula japonica and Potentilla chinensis Relieves Obesity via the AMPK Signaling Pathway in 3T3-L1 Adipocytes and HFD-Fed Obese Mice. Nutrients 2022; 14:nu14183685. [PMID: 36145056 PMCID: PMC9505034 DOI: 10.3390/nu14183685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/29/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Excessive lipid accumulation in white adipose tissue (WAT) is the major cause of obesity. Herein, we investigated the anti-obesity effect and molecular mechanism of a botanical mixture of 30% EtOH extract from the leaves of Inula japonica and Potentilla chinensis (EEIP) in 3T3-L1 preadipocytes and high-fat diet (HFD)-fed obese mice. In vitro, EEIP prevented lipid accumulation by downregulating the expression of lipogenesis-related transcription factors such as CCAAT/enhancer binding protein (C/EBP)α, peroxisome proliferator-activated receptor (PPAR)γ, and sterol regulatory element binding protein (SREBP)-1 via AMP-activated protein kinase (AMPK) activation and G0/G1 cell cycle arrest by regulating the Akt-mTOR pathways without inducing cytotoxicity. In vivo, EEIP significantly reduced body weight gain and body fat mass in the group administered concurrently with HFD (pre-) or administered during the maintenance of HFD (post-) including subcutaneous, gonadal, renal, and mesenteric fats, and improved blood lipid profiles and metabolic hormones. EEIP pre-administration also alleviated WAT hypertrophy and liver lipid accumulation by reducing C/EBPα, PPARγ, and SREBP-1 expression via AMPK activation. In the brown adipose tissue, EEIP pre-administration upregulated the expression of thermogenic factors. Furthermore, EEIP improved the HFD-induced altered gut microbiota in mice. Taken together, our data indicated that EEIP improves HFD-induced obesity through adipogenesis inhibition in the WAT and liver and is a promising dietary natural material for improving obesity.
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Affiliation(s)
- Su-Yeon Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Korea
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Kyung-Sook Chung
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Korea
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - So-Ri Son
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - So Young Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Dae Sik Jang
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Jong-Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Korea
| | - Hyun-Jae Kim
- Department of New Material Development, COSMAXBIO, Seongnam 13486, Korea
| | - Chang-Seon Na
- Department of New Material Development, COSMAXBIO, Seongnam 13486, Korea
| | - Sun-Hee Lee
- Department of New Material Development, COSMAXBIO, Seongnam 13486, Korea
- Correspondence: (S.-H.L.); (K.-T.L.); Tel.: +82-31-8018-0390 (S.-H.L.); +82-2-961-0860 (K.-T.L.)
| | - Kyung-Tae Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Korea
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Correspondence: (S.-H.L.); (K.-T.L.); Tel.: +82-31-8018-0390 (S.-H.L.); +82-2-961-0860 (K.-T.L.)
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Wang C, Luo C, Zhang H, Li X, Li Y, Xiong Y, Wang Y, Lin Y. [Overexpression of ATF3 inhibits the differentiation of goat intramuscular preadipocytes]. Sheng Wu Gong Cheng Xue Bao 2022; 38:2939-2947. [PMID: 36002422 DOI: 10.13345/j.cjb.220299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The aim of this study was to investigate the effect of activating transcription factor 3 (ATF3) on the differentiation of intramuscular preadipocytes in goat, and to elucidate its possible action pathway at the molecular level. In this study, the recombinant plasmid of goat pEGFP-N1-ATF3 was constructed, and the intramuscular preadipocytes were transfected with liposomes. The relative expression levels of adipocyte differentiation marker genes were detected by quantitative real-time PCR (qRT-PCR). After transfection of goat intramuscular preadipocytes with the goat pEGFP-N1-ATF3 overexpression vector, it was found that the accumulation of lipid droplets was inhibited, and the adipocyte differentiation markers PPARγ, C/EBPα and SREBP1 were extremely significantly down-regulated (P < 0.01), while C/EBPβ and AP2 were significantly down-regulated (P < 0.05). The ATF3 binding sites were predicted to exist in the promoter regions of PPARγ, C/EBPα and AP2 by the ALGGEN PROMO program. The overexpression of goat ATF3 inhibits the accumulation of lipid droplets in intramuscular preadipocytes, and this effect may be achieved by down-regulating PPARγ, C/EBPα and AP2. These results may facilitate elucidation of the regulatory mechanism of ATF3 in regulating the differentiation of goat intramuscular preadipocytes.
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Affiliation(s)
- Chongyang Wang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Cheng Luo
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Hao Zhang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Xin Li
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Yanyan Li
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Yan Xiong
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Youli Wang
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
| | - Yaqiu Lin
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, Sichuan, China
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Protection and Utilization, Ministry of Education/Sichuan Province, Southwest Minzu University, Chengdu 610041, Sichuan, China
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Sinha K, Kumar S, Rawat B, Singh R, Purohit R, Kumar D, Padwad Y. Kutkin, iridoid glycosides enriched fraction of Picrorrhiza kurroa promotes insulin sensitivity and enhances glucose uptake by activating PI3K/Akt signaling in 3T3-L1 adipocytes. Phytomedicine 2022; 103:154204. [PMID: 35671635 DOI: 10.1016/j.phymed.2022.154204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 03/21/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Therapeutic failure and drug resistance are common sequelae to insulin resistance associated with type 2 diabetes mellitus (T2DM). Consequently, there is an unmet need of alternative strategies to overcome insulin resistance associated complications. PURPOSE To demonstrate whether Kutkin (KT), iridoid glycoside enriched fraction of Picrorhiza kurroa extract (PKE) has potential to increase the insulin sensitivity vis à vis glucose uptake in differentiated adipocytes. METHODS Molecular interaction of KT phytoconstituents, picroside-I (P-I) & picroside- II (P-II) with peroxisome proliferator-activated receptor gamma (PPARγ), phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt) were analyzed in silico. Cellular viability and adipogenesis were determined by following 3-(4, 5-Dimethylthiazol-2-Yl)-2, 5-Diphenyltetrazolium bromide (MTT) assay and Oil Red-O staining. Further, ELISA kit based triglycerides and diacylglycerol-O-Acyltransferase-1 (DGAT1) were assessed in differentiated adipocytes. ELISA based determination were performed to check the levels of adiponectin and tumor necrosis factor alpha (TNF-α). However, Flow cytometry and immunofluorescence based assays were employed to measure the glucose uptake and glucose transporter 4 (glut4) expression in differentiated adipocytes, respectively. Further to explore the targeted signaling axis, mRNA expression levels of PPARγ, CCAAT/enhancer binding protein α (CEBPα), and glut4 were determined using qRT-PCR and insulin receptor substrate-1 (IRS-1), Insulin receptor substrate-2 (IRS-2), PI3K/Akt, AS160, glut4 followed by protein validation using immunoblotting in differentiated adipocytes. RESULTS In silico analysis revealed the binding affinities of major constituents of KT (P-I& P-II) with PPARγ/PI3K/Akt. The enhanced intracellular accumulation of triglycerides with concomitant activation of PPARγ and C/EBPα in KT treated differentiated adipocytes indicates augmentation of adipogenesis in a concentration-dependent manner. Additionally, at cellular level, KT upregulated the expression of DAGT1, and decreases fatty acid synthase (FAS), and lipoprotein lipase (LPL), further affirmed improvement in lipid milieu. It was also observed that KT upregulated the levels of adiponectin and reduced TNFα expression, thus improving the secretory functions of adipocytes along with enhanced insulin sensitivity. Furthermore, KT significantly promoted insulin mediated glucose uptake by increasing glut4 translocation to the membrane via PI3/Akt signaling cascade. The results were further validated using PI3K specific inhibitor, wortmannin and findings revealed that KT treatment significantly enhanced the expression and activation of p-PI3K/PI3K and p-Akt/Akt even in case of treatment with PI3K inhibitor wortmannin alone and co-treatment with KT in differentiated adipocytes and affirmed that KT as activator of PI3K/Akt axis in the presence of inhibitor as well. CONCLUSION Collectively, KT fraction of PKE showed anti-diabetic effects by enhancing glucose uptake in differentiated adipocytes via activation of PI3K/Akt signaling cascade. Therefore, KT may be used as a promising novel natural therapeutic agent for managing T2DMand to the best of our knowledge, this is the first report, showing the efficacy and potential molecular mechanism of KT in enhancing insulin sensitivity and glucose uptake in differentiated adipocytes.
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Affiliation(s)
- Kajal Sinha
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Shiv Kumar
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Bindu Rawat
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 HP., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Rahul Singh
- Structural Bioinformatics Lab, Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Rituraj Purohit
- Structural Bioinformatics Lab, Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Dinesh Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 HP., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Yogendra Padwad
- Pharmacology and Toxicology Laboratory, Dietetics and Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061 H.P., India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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Kim HL, Ahn YM, Lee SM, Seo CS, Park SH, Bang OS, Jung J. Anti-Obesity Effects of Aqueous Extracts of Sunbanghwalmyung-Eum in High-Fat- and High-Cholesterol-Diet-Induced Obese C57BL/6J Mice. Nutrients 2022; 14:nu14142929. [PMID: 35889886 PMCID: PMC9318667 DOI: 10.3390/nu14142929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 02/01/2023] Open
Abstract
Sunbanghwalmyung-eum (SBH) is a traditional herbal medicine that exhibits various pharmacological properties, such as antioxidant, anti-inflammatory, and anticancer activities. In this study, we investigated the systemic anti-obesity effects of an aqueous extract of SBH in the liver, adipose, and muscle tissue from high-fat and high-cholesterol diet (HFHCD)-induced obese C57BL/6J mice. After 6 weeks of an HFHCD, the mice were continuously fed HFHC with oral administration of SBH (100 mg/kg/day), Sim (simvastatin, 5 mg/kg/day, positive control), or water (HFHC only) for another 6 weeks. Our results showed that SBH attenuated the HFHCD-induced body weight gain and fat accumulation in the liver, and improved plasma lipid levels, such as those of triglycerides (TGs), blood total cholesterol (TC), and low-density lipoprotein (LDL-c). SBH and Sim inhibited the inflammation accompanied by obesity via decreasing inflammatory cytokine interleukin (IL)-1β, tumor necrosis factor α (TNFα), and monocyte chemoattractant protein 1 (MCP1). Moreover, SBH downregulated the expression of protein levels of adipogenic-related factors, including peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer-binding protein α (C/EBPα), in the liver, adipose, and muscle tissue. The SBH and Sim treatment also significantly upregulated the phosphorylation of AMP-activated protein kinase α (AMPKα) in the liver and hormone-sensitive lipase (HSL) in the adipose tissue. Overall, the effects of SBH on HFHCD-induced obesity were similar to or more potent than those of simvastatin. These results indicated that SBH has great potential as a therapeutic herbal medicine for obesity.
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Affiliation(s)
- Hye-Lin Kim
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea; (H.-L.K.); (Y.M.A.); (C.-S.S.); (S.-H.P.); (O.-S.B.)
| | - You Mee Ahn
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea; (H.-L.K.); (Y.M.A.); (C.-S.S.); (S.-H.P.); (O.-S.B.)
| | - So Min Lee
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea;
| | - Chang-Seob Seo
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea; (H.-L.K.); (Y.M.A.); (C.-S.S.); (S.-H.P.); (O.-S.B.)
| | - Seong-Hwan Park
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea; (H.-L.K.); (Y.M.A.); (C.-S.S.); (S.-H.P.); (O.-S.B.)
| | - Ok-Sun Bang
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea; (H.-L.K.); (Y.M.A.); (C.-S.S.); (S.-H.P.); (O.-S.B.)
| | - Jeeyoun Jung
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea; (H.-L.K.); (Y.M.A.); (C.-S.S.); (S.-H.P.); (O.-S.B.)
- Correspondence: ; Tel.: +82-42-868-9272
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Lee E, Bang J, Lee JY, Jun W, Lee YH. Anti-Obesity Effect of Porcine Collagen Peptide in 3T3-L1 Adipocytes and High-Fat Diet-Fed Mice by Regulating Adipogenesis. J Med Food 2022; 25:732-740. [PMID: 35723631 DOI: 10.1089/jmf.2022.k.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Obesity is one of the most common diseases caused by an imbalance in the intake and expenditure of energy, and it is associated with various metabolic complications. This study aimed at investigating the anti-obesity effects and mechanisms of porcine collagen peptide (PCP) using 3T3-L1 preadipocytes and high-fat diet (HFD)-fed mice. The PCP treatment significantly inhibited the adipocyte differentiation and attenuated the mRNA expression of transcription factors (CCAAT/enhancer-binding protein alpha [C/EBPα] and peroxisome proliferator-activated receptor gamma [PPARγ]) and the lipogenic gene (fatty acid synthase [FAS]) expression in 3T3-L1 preadipocytes. In the in vivo study, HFD-fed mice were fed low- (1.5 g/kg body weight/day) and high- (4.5 g/kg body weight/day) PCP for 12 weeks and compared with the normal diet-fed group and HFD-fed control group. The PCP-fed groups showed significantly lower body weight gain, white fat weight gain, serum triglycerides, and adipocyte size compared with the HFD-fed group. The changes in body fat were associated with the upregulation of adiponectin and the downregulation of leptin, C/EBPα, PPARγ, and FAS. These results suggest that PCP has the potential to reduce obesity by suppressing adipogenesis and could be applied as a functional food material.
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Affiliation(s)
- Eunji Lee
- Department of Food and Nutrition, The University of Suwon, Hwasung, South Korea
| | - Jiyoung Bang
- Department of Food and Nutrition, The University of Suwon, Hwasung, South Korea
| | - Jeong Yoon Lee
- Department of Food and Nutrition, The University of Suwon, Hwasung, South Korea
| | - Woojin Jun
- Department of Food and Nutrition, Chonnam National University, Gwangju, Korea
| | - Yoo-Hyun Lee
- Department of Food and Nutrition, The University of Suwon, Hwasung, South Korea
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Zhang L, Ma J, Pan X, Zhang M, Huang W, Liu Y, Yang H, Cheng Z, Zhang G, Qie M, Tong N. LncRNA MIR99AHG enhances adipocyte differentiation by targeting miR-29b-3p to upregulate PPARγ. Mol Cell Endocrinol 2022; 550:111648. [PMID: 35430304 DOI: 10.1016/j.mce.2022.111648] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/16/2022] [Accepted: 04/11/2022] [Indexed: 11/18/2022]
Abstract
AIM The aim is to identify new long noncoding RNAs (lncRNAs) involved in adipocyte differentiation. METHODS High-throughput RNA sequencing of 3T3-L1 preadipocytes was carried out before and after differentiation to identify the target lncRNAs and miRNAs. The effects of lncRNA, miRNA and the network mechanism on adipocyte differentiation were evaluated in vitro and in vivo. Visceral adipose tissue (VAT) was collected from Chinese subjects with obesity or a normal body mass index (BMI), and the levels of lncRNAs, adipogenic genes and miRNAs were measured. RESULTS MIR99AHG, miR-29b-3p were selected as the target lncRNA and miRNA. Short hairpin RNA against MIR99AHG inhibited the differentiation of 3T3-L1 preadipocytes, reduced the expression of the peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT enhancer-binding protein alpha (C/EBPα) and fatty acid binding protein 4 (FABP4) genes, upregulated the expression of miR-29b-3p. Overexpression of MIR99AHG showed the opposite effects. Overexpression of miR-29b-3p inhibited the differentiation of 3T3-L1 preadipocytes and decreased the PPARγ level, while inhibition of miR-29b-3p showed the opposite effects. MIR99AHG and PPARγ competed for binding to miR-29b-3p. In mice with high-fat diet-induced obesity, MIR99AHG and miR-29b-3p mRNA level were increased and decreased, respectively. Tail vein injection of adeno-associated virus 9-MIR99AHG-RNA interference (AAV9-MIR99AHG-RNAi) reduced the body weight, epididymal fat mass, MIR99AHG level and increased the expression of miR-29b-3p. The expression levels of MIR99AHG, PPARγ, C/EBPα and FABP4 in human visceral adipose tissue were higher in the obese group than in the normal weight group. CONCLUSIONS MIR99AHG enhances adipogenesis by regulating miR-29b-3p and PPARγ, providing a new target for therapeutic intervention in obesity.
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Affiliation(s)
- Lin Zhang
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital of Sichuan University, Chengdu, China
| | - Jinfang Ma
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital of Sichuan University, Chengdu, China
| | - Xiaohui Pan
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital of Sichuan University, Chengdu, China
| | - Mei Zhang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Wei Huang
- Department of Obstetrics and Gynaecology, Centre for Reproductive Medicine, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yanjun Liu
- Center of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University & The Second Affiliated Hospital of Chengdu, Chongqing Medical University, Chengdu, China
| | - Huawu Yang
- Center of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University & The Second Affiliated Hospital of Chengdu, Chongqing Medical University, Chengdu, China
| | - Zhong Cheng
- Department of Gastrointestinal Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Guixiang Zhang
- Department of Gastrointestinal Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Mingrong Qie
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Nanwei Tong
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital of Sichuan University, Chengdu, China.
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Aibara D, Matsuo K, Matsusue K. Lipase family member N is a novel target gene for CCAAT/enhancer-binding protein α in type 2 diabetic model mouse liver. Endocr J 2022; 69:567-575. [PMID: 35082200 DOI: 10.1507/endocrj.ej21-0465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
CCAAT/enhancer-binding protein α (C/EBPα) is a transcription factor abundantly expressed in the liver and white adipose tissue (WAT). In this study, we investigated the mechanism by which C/EBPα regulates the lipase family member N (Lipn) gene in the mouse liver. Mouse Lipn consists of non-coding exon 1 and the translation start site located in exon 2. Lipn expression in the fatty liver of ob/ob mice was significantly higher than that in OB/OB mice and was significantly repressed by liver-specific C/EBPα deficiency. Lipn expression in ob/ob mice was detected in the liver, epididymal WAT (eWAT), subcutaneous WAT (sWAT), brown adipose tissue (BAT), and skeletal muscle, but not in the kidney, brain, and heart. Lipn expression in the liver, eWAT, and sWAT of wild-type mice was undetectable, although C/EBPα was highly expressed in these tissues. The database analysis revealed four putative C/EBP-responsive elements (CEBPREs), highly homologous with the typical CEBPRE consensus sequence at positions -2,686/-2,678, -1,364/-1,356, -106/-98, and -45/-37 from the transcription start site (+1) of Lipn. Reporter assays using reporter constructs with serial or internal deletions of the 5'-flanking regions of Lipn showed that two functional CEBPREs (-106/-98 and -45/-37) in the Lipn promoter region are essential for enhancing Lipn transcriptional activity by C/EBPα. Electrophoretic mobility shift assay showed that C/EBPα/β binds to CEBPRE (-106/-98). These results suggest that C/EBPα and type 2 diabetic environment may be required for hepatic Lipn expression.
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Affiliation(s)
- Daisuke Aibara
- Faculty of Pharmaceutical Science, Fukuoka University, Fukuoka 814-0180, Japan
| | - Kohei Matsuo
- Faculty of Pharmaceutical Science, Fukuoka University, Fukuoka 814-0180, Japan
| | - Kimihiko Matsusue
- Faculty of Pharmaceutical Science, Fukuoka University, Fukuoka 814-0180, Japan
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Zhu G, Zhang J, Yue L, Xiang G. Preventive effect of salicin ether against type-2 diabetes mellitus through targeting PPARγ-regulated gene expression. Acta Biochim Pol 2022; 69:619-623. [PMID: 35485096 DOI: 10.18388/abp.2020_5983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Diabetes mellitus is the syndrome associated with metabolism having complicated pathogenesis and its morbidity rate is rapidly increasing every year. The present study investigated the preventive effect of salicin ether against type-2 diabetes and explored the underlying mechanism. Salicin ether reduced PPARγ-LBD level and transcriptional property of RXRα-PPARγ in 293T cells. The rosiglitazone significantly (p<0.01) increased grease droplet accumulation in adipocytes in comparison to control adipocytes. Increased grease droplet accumulation by rosiglitazone in adipocytes was reversed on treatment with salicin ether in dose-dependent manner. Salicin ether treatment of the adipocytes effectively suppressed rosiglitazone induced expression of FAS, C/EBPα, aP2, and HMG-CoA genes. Treatment of the adipocytes with salicin ether led to a prominent decrease in rosiglitazone mediated increase in aP2, CHIP, and C/EBPα protein expression. The inhibitory effect of rosiglitazone on expression of p-Akt/t-Akt, PPARa, p-FoxO1/t-FoxO1, and p-AMPK/t-AMPK was significantly (p<0.01) alleviated in the adipocytes by salicin ether. In summary, the present study demonstrated that salicin ether suppressed PPARγ activity and adipocyte differentiation. Moreover, the activation of FoxO1/Akt/AMPK was up-regulated and FAS/EBPα/aP2/HMG-CoA level inhibited by salicin ether in the adipocytes. Thus, salicin ether may be studied further for possible role in the treatment of diabetes.
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Affiliation(s)
- Guangping Zhu
- Department of Endocrinology, General Hospital of Central Theater Command of the People's Liberation Army, Wuhan, Hubei Province, 430070, P. R. China
| | - Junxia Zhang
- Department of Endocrinology, General Hospital of Central Theater Command of the People's Liberation Army, Wuhan, Hubei Province, 430070, P. R. China
| | - Ling Yue
- Department of Endocrinology, General Hospital of Central Theater Command of the People's Liberation Army, Wuhan, Hubei Province, 430070, P. R. China
| | - Guangda Xiang
- Department of Endocrinology, General Hospital of Central Theater Command of the People's Liberation Army, Wuhan, Hubei Province, 430070, P. R. China
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El Gizawy HA, El-Haddad AE, Saadeldeen AM, Boshra SA. Tentatively Identified (UPLC/T-TOF-MS/MS) Compounds in the Extract of Saussurea costus Roots Exhibit In Vivo Hepatoprotection via Modulation of HNF-1α, Sirtuin-1, C/ebpα, miRNA-34a and miRNA-223. Molecules 2022; 27:molecules27092802. [PMID: 35566153 PMCID: PMC9104236 DOI: 10.3390/molecules27092802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 12/10/2022] Open
Abstract
Saussurea costus is a plant traditionally used for the treatment of several ailments. Our study accomplished the UPLC/T-TOF-MS/MS analysis of a methanol extract of Saussurea costus roots (MESC), in addition to lipoidal matter determination and assessment of its in vivo hepatoprotective activity. In this study, we were able to identify the major metabolites in MESC rather than the previously known isolated compounds, improving our knowledge of its chemical constituents. The flavones apigenin, acacetin, baicalein, luteolin, and diosmetin, and the flavonol aglycones quercetin, kaempferol, isorhamnetin, gossypetin, and myricetin and/or their glycosides and glucuronic derivatives were the major identified compounds. The hepatoprotective activity of MESC was evaluated by measuring catalase activity using UV spectrophotometry, inflammatory cytokines and apoptotic markers using ELISA techniques, and genetic markers using PCR. Paracetamol toxicity caused a significant increase in plasma caspase 2, cytokeratin 18 (CK18), liver tumor necrosis factor-α (TNF-α), interleukin 6 (IL-6), miRNA-34a, and miRNA-223, as well as a significant decrease in liver catalase (CAT) activity and in the levels of liver nuclear factor 1α (HNF-1α), sirtuin-1, and C/ebpα. Oral pretreatment with MESC (200 mg/kg) showed a significant decrease in caspase 2, CK18, TNF-α, IL-6 and a significant increase in liver CAT activity. MESC decreased the levels of liver miRNA-34a and miRNA-223 and induced HNF-1α, sirtuin-1, and C/ebpα gene expression. The histological examination showed a significant normalization in rats pretreated with MESC. Our findings showed that Saussurea costus may exert a potent hepatoprotective activity through the modulation of the expression of cellular cytokines, miRNA-34a, and miRNA-223.
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Affiliation(s)
- Heba A. El Gizawy
- Department of Pharmacognosy, Faculty of Pharmacy, October 6 University (O6U), Giza 12585, Egypt;
| | - Alaadin E. El-Haddad
- Department of Pharmacognosy, Faculty of Pharmacy, October 6 University (O6U), Giza 12585, Egypt;
- Correspondence: or
| | - Amr M. Saadeldeen
- Department of Pharmacognosy, School of Pharmacy, Newgiza University (NGU), Newgiza, km 22 Cairo-Alexandria Desert Road, Giza 12577, Egypt;
| | - Sylvia A. Boshra
- Department of Biochemistry, Faculty of Pharmacy, October 6 University (O6U), Giza 12585, Egypt;
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Lee KD, Ilavenil S, Karnan M, Yang CJ, Kim D, Choi KC. Novel Bacillus ginsengihumi CMRO6 Inhibits Adipogenesis via p38MAPK/Erk44/42 and Stimulates Glucose Uptake in 3T3-L1 Pre-Adipocytes through Akt/AS160 Signaling. Int J Mol Sci 2022; 23:4727. [PMID: 35563118 PMCID: PMC9104516 DOI: 10.3390/ijms23094727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 12/22/2022] Open
Abstract
The health benefits of probiotics have been known for decades, but there has only been limited use of probiotics in the treatment of obesity. In this study, we describe, for the first time, the role of cell-free metabolites (CM) from Bacillus ginsengihumi-RO6 (CMRO6) in adipogenesis and lipogenesis in 3T3-L1 pre-adipocytes. The experimental results show that CMRO6 treatment effectively reduced lipid droplet accumulation and the expression of CCAAT/enhancer-binding protein α and β (C/EBPα and C/EBPβ), peroxisome proliferator-activated receptor γ (PPAR-γ), serum regulatory binding protein 1c (SREBP-1c), fatty acid-binding protein 4 (FABP4), fatty acid synthase (FAS), acetyl CoA carboxylase (ACC), phosphorylated p38MAPK, and Erk44/42. Additionally, CMRO6 treatment significantly increased glucose uptake and phosphorylated Akt (S473), AS160, and TBC1D1 protein expressions. Considering the results of this study, B. ginsengihumi may be a novel probiotic used for the treatment of obesity and its associated metabolic disorders.
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Affiliation(s)
- Kyung Dong Lee
- Department of Companion Animals, Dongsin University, Naju 58245, Korea;
| | - Soundharrajan Ilavenil
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Korea; (S.I.); (M.K.)
| | - Muthusamy Karnan
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Korea; (S.I.); (M.K.)
| | - Chul-Ju Yang
- Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea;
| | - Dahye Kim
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, Wanju 55365, Korea;
| | - Ki Choon Choi
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Korea; (S.I.); (M.K.)
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Wu YL, Lin H, Li HF, Don MJ, King PC, Chen HH. Salvia miltiorrhiza Extract and Individual Synthesized Component Derivatives Induce Activating-Transcription-Factor-3-Mediated Anti-Obesity Effects and Attenuate Obesity-Induced Metabolic Disorder by Suppressing C/EBPα in High-Fat-Induced Obese Mice. Cells 2022; 11:cells11061022. [PMID: 35326476 PMCID: PMC8947163 DOI: 10.3390/cells11061022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 12/24/2022] Open
Abstract
Pharmacological studies indicate that Salvia miltiorrhiza extract (SME) can improve cardiac and blood vessel function. However, there is limited knowledge regarding the effects (exerted through epigenetic regulation) of SME and newly derived single compounds, with the exception of tanshinone IIA and IB, on obesity-induced metabolic disorders. In this study, we administered SME or dimethyl sulfoxide (DMSO) as controls to male C57BL/J6 mice after they were fed a high-fat diet (HFD) for 4 weeks. SME treatment significantly reduced body weight, fasting plasma glucose, triglyceride levels, insulin resistance, and adipogenesis/lipogenesis gene expression in treated mice compared with controls. Transcriptome array analysis revealed that the expression of numerous transcriptional factors, including activating transcription factor 3 (ATF3) and C/EBPα homologous protein (CHOP), was significantly higher in the SME group. ST32db, a novel synthetic derivative similar in structure to compounds from S. miltiorrhiza extract, ameliorates obesity and obesity-induced metabolic syndrome in HFD-fed wild-type mice but not ATF3−/− mice. ST32db treatment of 3T3-L1 adipocytes suppresses lipogenesis/adipogenesis through the ATF3 pathway to directly inhibit C/EBPα expression and indirectly inhibit the CHOP pathway. Overall, ST32db, a single compound modified from S. miltiorrhiza extract, has anti-obesity effects through ATF3-mediated C/EBPα downregulation and the CHOP pathway. Thus, SME and ST32db may reduce obesity and diabetes in mice, indicating the potential of both SME and ST32db as therapeutic drugs for the treatment of obesity-induced metabolic syndrome.
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Affiliation(s)
- Yueh-Lin Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan; (Y.-L.W.); (H.L.)
- Division of Nephrology, Department of Internal Medicine, Wei-Gong Memorial Hospital, Miaoli 350, Taiwan
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli 350, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei 110, Taiwan
| | - Heng Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan; (Y.-L.W.); (H.L.)
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-F.L.); (P.-C.K.)
| | - Hsiao-Fen Li
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-F.L.); (P.-C.K.)
| | - Ming-Jaw Don
- National Research Institute of Chinese Medicine, Taipei 112, Taiwan;
| | - Pei-Chih King
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-F.L.); (P.-C.K.)
| | - Hsi-Hsien Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan; (Y.-L.W.); (H.L.)
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei 110, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: ; Tel.: +886-27372181-3903; Fax: 886-2-5558-9890
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Yan H, Li Q, Li M, Zou X, Bai N, Yu Z, Zhang J, Zhang D, Zhang Q, Wang J, Jia H, Wu Y, Hou Z. Ajuba functions as a co-activator of C/EBPβ to induce expression of PPARγ and C/EBPα during adipogenesis. Mol Cell Endocrinol 2022; 539:111485. [PMID: 34619292 DOI: 10.1016/j.mce.2021.111485] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 12/28/2022]
Abstract
Adipogenesis is regulated by a complicated network of transcription factors among which PPARγ and C/EBP family members are the major regulators. During adipogenesis, C/EBPβ is induced early and then transactivates PPARγ and C/EBPα, which cooperatively induce genes whose expressions give rise to the mature adipocyte phenotype. Identifying the factors that influence the expression and activity of C/EBPβ should provide additional insight into the mechanisms regulating adipogenesis. Here, we demonstrate that depletion of Ajuba in 3T3-L1 cells significantly decreases mRNA and protein levels of PPARγ and C/EBPα and impairs adipocyte differentiation, while overexpression increases expression of these genes and promotes adipocyte differentiation. Moreover, restoration of C/EBPα or PPARγ expression in Ajuba-deficient 3T3-L1 cells improves the impaired lipid accumulation. Mechanistically, Ajuba interacts with C/EBPβ and recruits CBP to facilitate the binding of C/EBPβ to the promoter of PPARγ and C/EBPα, resulting in increased H3 histone acetylation and target gene expression. Collectively, these data indicate that Ajuba functions as a co-activator of C/EBPβ, and may be an important therapeutic target for combating obesity-related diseases.
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Affiliation(s)
- Han Yan
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Department of Biochemistry & Molecular Cellular Biology, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Qi Li
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Mengying Li
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Xiuqun Zou
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Ningning Bai
- Shanghai Key Laboratory of Diabetes, Shanghai Institute for Diabetes, Shanghai Clinical Medical Centre of Diabetes, Shanghai Key Clinical Centre of Metabolic Diseases, Department of Endocrinology and Metabolism, The Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, 200233, China
| | - Zichao Yu
- Shandong Provincial Hospital, Shandong Laboratory Animal Center, Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250021, China
| | - Jie Zhang
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Dan Zhang
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Qun Zhang
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Jiamin Wang
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Hao Jia
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Yingjie Wu
- Shandong Provincial Hospital, Shandong Laboratory Animal Center, Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250021, China; Department of Molecular Pathobiology, New York University College of Dentistry, New York, 10010, USA.
| | - Zhaoyuan Hou
- Hongqiao International Institute of Medicine, Tongren Hospital/Faculty of Basic Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Department of Biochemistry & Molecular Cellular Biology, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
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47
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Rai C, Nandini CD, Priyadarshini P. Composition and structure elucidation of bovine milk glycosaminoglycans and their anti-adipogenic activity via modulation PPAR-γ and C/EBP-α. Int J Biol Macromol 2021; 193:137-144. [PMID: 34688682 DOI: 10.1016/j.ijbiomac.2021.10.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/27/2021] [Accepted: 10/11/2021] [Indexed: 12/25/2022]
Abstract
The structure function relation of Glycosaminoglycans from bovine milk (bmGAGs) has not been studied in detail. In the present study bmGAGs was isolated and structurally characterized. Chondroitin sulphate was one of the major GAGs present and had 65% of ΔDi-diSB (GlcA(2S)-GalNAc(4S)), followed by 18% of ΔDi-4S(Δ4,5HexUAα1 → 3GalNAc). Further, bmGAGs exhibited a marked anti-adipogenic effect in 3 T3-L1 cells without affecting cell viability at the concentration used. The triglyceride content treated with bmGAGs was significantly decreased as assessed by Oil-Red O staining. Peroxisome proliferator activated receptor γ (PPAR-γ) and CCAAT/enhancer-binding proteins (C/EBPα) the critical transcription factors in adipogenesis showed significant decrease in both gene and protein levels. Sterol regulatory element-binding protein 1c (SREBP-1c) that promotes the adipocyte differentiation by enhancing the activity of PPAR-γ was inversely affected by bmGAGs and the fatty acid synthase (FAS) expression was modulated. Thus, the present work is among the firsts to demonstrate an anti-adipogenic activity of bmGAGs by modulating the adipogenesis-related marker proteins and hence bmGAGs may be used as a supplement/therapeutic in the management of obesity.
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Affiliation(s)
- Chaitra Rai
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - C D Nandini
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Poornima Priyadarshini
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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48
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Lim SH, Lee HS, Han HK, Choi CI. Saikosaponin A and D Inhibit Adipogenesis via the AMPK and MAPK Signaling Pathways in 3T3-L1 Adipocytes. Int J Mol Sci 2021; 22:ijms222111409. [PMID: 34768840 PMCID: PMC8583978 DOI: 10.3390/ijms222111409] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/07/2021] [Accepted: 10/20/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity is a lipid metabolism disorder caused by genetic, medicinal, nutritional, and other environmental factors. It is characterized by a complex condition of excess lipid accumulation in adipocytes. Adipogenesis is a differentiation process that converts preadipocytes into mature adipocytes and contributes to excessive fat deposition. Saikosaponin A (SSA) and saikosaponin D (SSD) are triterpenoid saponins separated from the root of the Bupleurum chinensis, which has long been used to treat inflammation, fever, and liver diseases. However, the effects of these constituents on lipid accumulation and obesity are poorly understood. We investigated the anti-obesity effects of SSA and SSD in mouse 3T3-L1 adipocytes. The MTT assay was performed to measure cell viability, and Oil Red O staining was conducted to determine lipid accumulation. Various adipogenic transcription factors were evaluated at the protein and mRNA levels by Western blot assay and quantitative reverse transcription polymerase chain reaction (qRT-PCR). Here, we showed that SSA and SSD significantly inhibited lipid accumulation without affecting cell viability within the range of the tested concentrations (0.938–15 µM). SSA and SSD also dose-dependently suppressed the expression of peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer binding protein alpha (C/EBPα), sterol regulatory element binding protein-1c (SREBP-1c), and adiponectin. Furthermore, the decrease of these transcriptional factors resulted in the repressed expression of several lipogenic genes including fatty acid binding protein (FABP4), fatty acid synthase (FAS), and lipoprotein lipase (LPL). In addition, SSA and SSD enhanced the phosphorylation of adenosine monophosphate-activated protein kinase (AMPK) and its substrate, acetyl-CoA carboxylase (ACC), and inhibited the phosphorylation of extracellular-regulated kinase 1/2 (ERK1/2) and p38, but not c-Jun-N-terminal kinase (JNK). These results suggest that SSA and SSD inhibit adipogenesis through the AMPK or mitogen-activated protein kinase (MAPK) pathways in the early stages of adipocyte differentiation. This is the first study on the anti-adipogenic effects of SSA and SSD, and further research in animals and humans is necessary to confirm the potential of saikosaponins as therapeutic agents for obesity.
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Affiliation(s)
- Sung Ho Lim
- Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Korea; (S.H.L.); (H.S.L.)
| | - Ho Seon Lee
- Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Korea; (S.H.L.); (H.S.L.)
| | - Hyo-Kyung Han
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Korea;
| | - Chang-Ik Choi
- Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Korea; (S.H.L.); (H.S.L.)
- Correspondence: ; Tel.: +82-31-961-5230
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49
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Lee D, Kim JY, Qi Y, Park S, Lee HL, Yamabe N, Kim H, Jang DS, Kang KS. Phytochemicals from the flowers of Prunus persica (L.) Batsch: Anti-adipogenic effect of mandelamide on 3T3-L1 preadipocytes. Bioorg Med Chem Lett 2021; 49:128326. [PMID: 34403725 DOI: 10.1016/j.bmcl.2021.128326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/26/2021] [Accepted: 08/10/2021] [Indexed: 01/11/2023]
Abstract
Flowers of Prunus persica (L.) Batsch (Rosaceae), known as peach blossoms, have been reported to exert anti-obesity effects by improving hepatic lipid metabolism in obese mice. However, little is known regarding the anti-adipogenic effects of the phenolic compounds isolated from P. persica flowers. This study investigated the inhibitory effects of compounds extracted from P. persica flowers (PPF) on adipogenesis in 3T3-L1 murine preadipocytes using adipogenic differentiation assays. Additionally, we compared the anti-adipogenic effects of the phenolic compounds isolated from PPF, such as prunasin amide (1), amygdalin amide (2), prunasin acid (3), mandelamide (4), methyl caffeate (5), ferulic acid (6), chlorogenic acid (7), benzyl α-l-xylpyranosyl-(1 → 6)-β-d-glucopyranoside (8), prunin (9), naringenin (10), nicotiflorin (11), astragalin (12), afzelin (13), and uridine (14), on adipogenesis in 3T3-L1 murine preadipocytes. PPF and compounds 4-7 and 10 significantly inhibited adipogenesis. Among them, mandelamide (4) exhibited the maximum inhibitory activity with an IC50 of 36.04 ± 1.82 μM. Additionally, mandelamide downregulated the expression of key adipogenic markers, such as extracellular signal-regulated kinase, c-Jun-N-terminal kinase, P38, CCAAT/enhancer-binding protein α, CCAAT/enhancer-binding protein β, peroxisome proliferator activated receptor γ, and glucocorticoid receptor. These results indicate that mandelamide is an active ingredient of PPF possessing anti-obesity properties.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea
| | - Ji-Young Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, South Korea
| | - Yutong Qi
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, South Korea
| | - Sangsu Park
- Department of Fundamental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, South Korea
| | - Hye Lim Lee
- Department of Pediatrics, College of Korean Medicine, Daejeon University, Daejeon, South Korea
| | - Noriko Yamabe
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea
| | - Hocheol Kim
- Department of Herbal Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 02447, South Korea
| | - Dae Sik Jang
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, South Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
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50
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Yadav AK, Jang BC. Inhibition of Lipid Accumulation and Cyclooxygenase-2 Expression in Differentiating 3T3-L1 Preadipocytes by Pazopanib, a Multikinase Inhibitor. Int J Mol Sci 2021; 22:ijms22094884. [PMID: 34063048 PMCID: PMC8125232 DOI: 10.3390/ijms22094884] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 01/23/2023] Open
Abstract
Pazopanib is a multikinase inhibitor with anti-tumor activity. As of now, the anti-obesity effect and mode of action of pazopanib are unknown. In this study, we investigated the effects of pazopanib on lipid accumulation, lipolysis, and expression of inflammatory cyclooxygenase (COX)-2 in differentiating and differentiated 3T3-L1 cells, a murine preadipocyte. Of note, pazopanib at 10 µM markedly decreased lipid accumulation and triglyceride (TG) content during 3T3-L1 preadipocyte differentiation with no cytotoxicity. Furthermore, pazopanib inhibited not only expression of CCAAT/enhancer-binding protein-α (C/EBP-α), peroxisome proliferator-activated receptor-γ (PPAR-γ), and perilipin A but also phosphorylation of signal transducer and activator of transcription (STAT)-3 during 3T3-L1 preadipocyte differentiation. In addition, pazopanib treatment increased phosphorylation of cAMP-activated protein kinase (AMPK) and its downstream effector ACC during 3T3-L1 preadipocyte differentiation. However, in differentiated 3T3-L1 adipocytes, pazopanib treatment did not stimulate glycerol release and hormone-sensitive lipase (HSL) phosphorylation, hallmarks of lipolysis. Moreover, pazopanib could inhibit tumor necrosis factor (TNF)-α-induced expression of COX-2 in both 3T3-L1 preadipocytes and differentiated cells. In summary, this is the first report that pazopanib has strong anti-adipogenic and anti-inflammatory effects in 3T3-L1 cells, which are mediated through regulation of the expression and phosphorylation of C/EBP-α, PPAR-γ, STAT-3, ACC, perilipin A, AMPK, and COX-2.
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