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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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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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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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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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Liu L, Zhang HH, Zhang XN, Liu LL, Chen MT. [Screening and Identification of lncRNA Related to Adipocity of Bone Marrow Microenvironment in Aplastic Anemia]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2024; 32:610-616. [PMID: 38660874 DOI: 10.19746/j.cnki.issn.1009-2137.2024.02.043] [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: 04/26/2024]
Abstract
OBJECTIVE To systematically screen and identify long noncoding RNA (lncRNA) associated with bone marrow adiposity changes in aplastic anemia (AA). METHODS The PPARγ and C/EBPα ChIP-Seq data in ChIPBase was analyzed by bioinformatics and the potential lncRNA co-transcriptionally regulated by PPARγ and C/EBPα was screened. The expression of candidate lncRNA was verified by qRT-PCR in the in vitro adipogenic differentiation model of BM-MSC, BM-MSC infected with lenti-shPPARγ and lenti-shC/EBPα as well as clinical BM-MSC samples derived from AA and controls. RESULTS PPARγ and C/EBPα were significantly highly expressed in AA BM-MSC, and knock-down of PPARγ and C/EBPα impaired the adipogenic capacity of AA BM-MSC. PPARγ and C/EBPα cotranscriptionally activate LINC01230 promoter activity in binding sites dependant manner. The LINC01230 was also aberrantly highly expressed in AA BM-MSC compared with controls. CONCLUSION PPARγ and C/EBPα are aberrantly expressed in AA BM-MSC and may promote the adipogenic differentiation of AA BM-MSC, and to a certain extent mediate the bone marrow adiposity alteration by transcriptionally activating LINC01230 expression.
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Affiliation(s)
- Leg Liu
- Department of Hematology,The Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| | - Huan-Huan Zhang
- Department of Operating Room,The Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| | - Xian-Ning Zhang
- Medical Research Center,The Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| | - Lu-Lu Liu
- Medical Research Center,The Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| | - Ming-Tai Chen
- Medical Research Center,The Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
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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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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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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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11
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Pan L, Li Y, Gao H, Lai X, Cai Y, Chen Z, Li X, Wang SY. Clinical features and management of germline CEBPA-mutated carriers. Leuk Res 2024; 138:107453. [PMID: 38442594 DOI: 10.1016/j.leukres.2024.107453] [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: 10/28/2023] [Revised: 01/08/2024] [Accepted: 01/30/2024] [Indexed: 03/07/2024]
Abstract
Familial acute myeloid leukemia (AML) pedigrees with germline CCAAT/enhancer-binding protein-α (CEBPA) mutation have been rarely reported due to insufficient knowledge of their clinical features. Here, we report two Chinese families with multiple AML cases carrying germline CEBPA mutations, one of which had 11 cases spanning four consecutive generations. Additionally, we collected clinical data of 57 AML patients from 22 families with germline CEBPA mutations, with 58.3% of them harboring double CEBPA mutations. The first mutation frequently occurred at the N-terminal of CEBP/α (78.6%), resulting in an exclusive expression of p30 of CEBPA (CEBPAp30). The second mutation was mostly found at the C-terminal of CEBP/α (CEBPAothers). Germline CEBPAp30 carriers had higher incidences of AML (80.36% vs. 42.86%) and earlier onset of AML (18 vs. 38.5 years old) compared to germline CEBPAothers carriers. Despite the high rates of relapse, most familial AML cases exhibited favorable overall survival (OS), with germline CEBPAp30 carriers having better survival outcomes (>25 years vs. 11 years for CEBPAothers carriers). Among the 27 healthy germline CEBPA-mutated carriers, we detected a pre-leukemia clone harboring a pathogenic IDH2 variant (R140Q)in one individual. These findings should aid in the genetic counseling and management of AML patients and healthy carriers with germline CEBPA mutations.
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Affiliation(s)
- Lili Pan
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Department of Hematology, Fujian Medical University Union Hospital, Fuzhou 350001, PR China; Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China.
| | - Yining Li
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China
| | - Huiying Gao
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China
| | - Xiaolin Lai
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China
| | - Yuanhua Cai
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China
| | - Zhixiang Chen
- Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China
| | - Xiaofan Li
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Department of Hematology, Fujian Medical University Union Hospital, Fuzhou 350001, PR China; Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China
| | - Shao-Yuan Wang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Department of Hematology, Fujian Medical University Union Hospital, Fuzhou 350001, PR China; Union Clinical Medical Colleges, Fujian Medical University, Fuzhou 350001, PR China.
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12
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Danielewski M, Rapak A, Kruszyńska A, Małodobra-Mazur M, Oleszkiewicz P, Dzimira S, Kucharska AZ, Słupski W, Matuszewska A, Nowak B, Szeląg A, Piórecki N, Zaleska-Dorobisz U, Sozański T. Cornelian Cherry ( Cornus mas L.) Fruit Extract Lowers SREBP-1c and C/EBPα in Liver and Alters Various PPAR-α, PPAR-γ, LXR-α Target Genes in Cholesterol-Rich Diet Rabbit Model. Int J Mol Sci 2024; 25:1199. [PMID: 38256272 PMCID: PMC10816641 DOI: 10.3390/ijms25021199] [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: 12/23/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Cornelian cherry (Cornus mas L.) fruits, abundant in iridoids and anthocyanins, are natural products with proven beneficial impacts on the functions of the cardiovascular system and the liver. This study aims to assess and compare whether and to what extent two different doses of resin-purified cornelian cherry extract (10 mg/kg b.w. or 50 mg/kg b.w.) applied in a cholesterol-rich diet rabbit model affect the levels of sterol regulatory element-binding protein 1c (SREBP-1c) and CCAAT/enhancer binding protein α (C/EBPα), and various liver X receptor-α (LXR-α), peroxisome proliferator-activated receptor-α (PPAR-α), and peroxisome proliferator-activated receptor-γ (PPAR-γ) target genes. Moreover, the aim is to evaluate the resistive index (RI) of common carotid arteries (CCAs) and aortas, and histopathological changes in CCAs. For this purpose, the levels of SREBP-1c, C/EBPα, ATP-binding cassette transporter A1 (ABCA1), ATP-binding cassette transporter G1 (ABCG1), fatty acid synthase (FAS), endothelial lipase (LIPG), carnitine palmitoyltransferase 1A (CPT1A), and adiponectin receptor 2 (AdipoR2) in liver tissue were measured. Also, the levels of lipoprotein lipase (LPL), visceral adipose tissue-derived serine protease inhibitor (Vaspin), and retinol-binding protein 4 (RBP4) in visceral adipose tissue were measured. The RI of CCAs and aortas, and histopathological changes in CCAs, were indicated. The oral administration of the cornelian cherry extract decreased the SREBP-1c and C/EBPα in both doses. The dose of 10 mg/kg b.w. increased ABCA1 and decreased FAS, CPT1A, and RBP4, and the dose of 50 mg/kg b.w. enhanced ABCG1 and AdipoR2. Mitigations in atheromatous changes in rabbits' CCAs were also observed. The obtained outcomes were compared to the results of our previous works. The beneficial results confirm that cornelian cherry fruit extract may constitute a potentially effective product in the prevention and treatment of obesity-related disorders.
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Affiliation(s)
- Maciej Danielewski
- Department of Pharmacology, Wroclaw Medical University, J. Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland; (W.S.); (A.M.); (B.N.); (A.S.)
| | - Andrzej Rapak
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, 53-114 Wroclaw, Poland; (A.R.); (A.K.)
| | - Angelika Kruszyńska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, 53-114 Wroclaw, Poland; (A.R.); (A.K.)
| | - Małgorzata Małodobra-Mazur
- Department of Forensic Medicine, Division of Molecular Techniques, Wroclaw Medical University, M. Sklodowskiej-Curie 52, 50-369 Wroclaw, Poland;
| | - Paweł Oleszkiewicz
- Department of Radiology and Imaging Diagnostics II, Lower Silesian Center of Oncology, Pulmonology and Hematology, Grabiszynska 105, 53-439 Wroclaw, Poland;
| | - Stanisław Dzimira
- Department of Pathology, Wroclaw University of Environmental and Life Sciences, C. K. Norwida 31, 50-375 Wroclaw, Poland;
| | - Alicja Z. Kucharska
- Department of Fruit, Vegetable, and Plant Nutraceutical Technology, Wroclaw University of Environmental and Life Sciences, J. Chelmonskiego 37, 51-630 Wroclaw, Poland;
| | - Wojciech Słupski
- Department of Pharmacology, Wroclaw Medical University, J. Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland; (W.S.); (A.M.); (B.N.); (A.S.)
| | - Agnieszka Matuszewska
- Department of Pharmacology, Wroclaw Medical University, J. Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland; (W.S.); (A.M.); (B.N.); (A.S.)
| | - Beata Nowak
- Department of Pharmacology, Wroclaw Medical University, J. Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland; (W.S.); (A.M.); (B.N.); (A.S.)
| | - Adam Szeląg
- Department of Pharmacology, Wroclaw Medical University, J. Mikulicza-Radeckiego 2, 50-345 Wroclaw, Poland; (W.S.); (A.M.); (B.N.); (A.S.)
| | - Narcyz Piórecki
- Bolestraszyce Arboretum and Institute of Physiography, Bolestraszyce 130, 37-722 Wyszatyce, Poland;
- Institute of Physical Culture Sciences, Medical College, University of Rzeszow, Cicha 2A, 35-326 Rzeszow, Poland
| | - Urszula Zaleska-Dorobisz
- Department of General and Pediatric Radiology, Wroclaw Medical University, M. Sklodowskiej-Curie 50/52, 50-369 Wroclaw, Poland;
| | - Tomasz Sozański
- Department of Preclinical Sciences, Pharmacology and Medical Diagnostics, Faculty of Medicine, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;
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13
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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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14
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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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15
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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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16
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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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17
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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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18
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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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19
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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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20
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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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21
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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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22
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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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23
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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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Cho HH, Jang SH, Won C, Kim CH, Kim HD, Kim TH, Cho JH. Derhamnosylmaysin Inhibits Adipogenesis via Inhibiting Expression of PPARγ and C/EBPα in 3T3-L1 Cells. Molecules 2022; 27:molecules27134232. [PMID: 35807476 PMCID: PMC9268393 DOI: 10.3390/molecules27134232] [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: 05/21/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 12/10/2022] Open
Abstract
We investigated the effects of derhamnosylmaysin (DM) on adipogenesis and lipid accumulation in 3T3-L1 adipocytes. Our data showed that DM inhibited lipid accumulation and adipocyte differentiation in 3T3-L1 cells. Treatment of 3T3-L1 adipocytes with DM decreased the expression of major transcription factors, such as sterol regulatory element-binding protein-1c (SREBP-1c), the CCAAT-enhancer-binding protein (CEBP) family, and peroxisome proliferator-activated receptor gamma (PPARγ), in the regulation of adipocyte differentiation. Moreover, the expression of their downstream target genes related to adipogenesis and lipogenesis, including adipocyte fatty acid-binding protein (aP2), lipoprotein lipase (LPL), stearyl-CoA-desaturase-1 (SCD-1), acetyl-CoA carboxylase (ACC), and fatty acid synthase (FAS), was also decreased by treatment with DM during adipogenesis. Additionally, DM attenuated insulin-stimulated phosphorylation of Akt. These results first demonstrated that DM inhibited adipogenesis and lipogenesis through downregulation of the key adipogenic transcription factors SREBP-1c, the CEBP family, and PPARγ and inactivation of the major adipogenesis signaling factor Akt, which is intermediated in insulin. These studies demonstrated that DM is a new bioactive compound for antiadipogenic reagents for controlling overweight and obesity.
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Affiliation(s)
- Hang-Hee Cho
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (H.-H.C.); (S.-H.J.); (C.W.); (C.-H.K.)
| | - Sun-Hee Jang
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (H.-H.C.); (S.-H.J.); (C.W.); (C.-H.K.)
| | - Chungkil Won
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (H.-H.C.); (S.-H.J.); (C.W.); (C.-H.K.)
| | - Chung-Hui Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (H.-H.C.); (S.-H.J.); (C.W.); (C.-H.K.)
| | - Hong-Duck Kim
- Department of Public Health, Division of Environmental Health Science, New York Medical College, Valhalla, NY 10595, USA;
| | - Tae Hoon Kim
- Department of Food Science and Biotechnology, Daegu University, Gyungsan 38453, Korea
- Correspondence: (T.H.K.); (J.-H.C.); Tel.: +82-53-850-6533 (T.H.K.); +82-55-772-2358 (J.-H.C.)
| | - Jae-Hyeon Cho
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (H.-H.C.); (S.-H.J.); (C.W.); (C.-H.K.)
- Correspondence: (T.H.K.); (J.-H.C.); Tel.: +82-53-850-6533 (T.H.K.); +82-55-772-2358 (J.-H.C.)
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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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26
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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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27
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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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Rahman MS, Kang I, Lee Y, Habib MA, Choi BJ, Kang JS, Park DS, Kim YS. Bifidobacterium longum subsp. infantis YB0411 Inhibits Adipogenesis in 3T3-L1 Pre-adipocytes and Reduces High-Fat-Diet-Induced Obesity in Mice. J Agric Food Chem 2021; 69:6032-6042. [PMID: 34008977 DOI: 10.1021/acs.jafc.1c01440] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Although the health benefits of probiotics have been widely known for decades, there has still been limited use of probiotic bacteria in anti-obesity therapy. Herein, we demonstrated the role of Bifidobacterium longum subsp. infantis YB0411 (YB, which was selected by an in vitro adipogenesis assay) in adipogenic differentiation in 3T3-L1 pre-adipocytes. We observed that YB-treatment effectively reduced triglyceride accumulation and the expression of CCAAT/enhancer-binding protein α, β, and δ (C/EBPα, C/EBPβ, and C/EBPδ), peroxisome proliferator-activated receptor γ (PPARγ), fatty acid-binding protein 4 (aP2), and acetyl-CoA carboxylase (ACC). YB-treatment also reduced the levels of core autophagic markers (p62 and LC3B) in 3T3-L1 pre-adipocytes. Small-interfering-RNA-mediated knockdown and competitive-chemical-inhibition assays showed that AMP-activated protein kinase (AMPK) commenced the anti-adipogenic effect of YB. In addition, YB supplement markedly reduced body weight and fat accretion in mice with high-fat-diet-induced obesity. Our findings suggest that YB may be used as a potential probiotic candidate to ameliorate obesity.
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Affiliation(s)
- Md Shamim Rahman
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
| | - Inseok Kang
- College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
| | - Youri Lee
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
| | - Md Ahasun Habib
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
| | - Byeong Jo Choi
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanjiro, Cheongju 28116, Republic of Korea
| | - Jong Soon Kang
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanjiro, Cheongju 28116, Republic of Korea
| | - Doo-Sang Park
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Republic of Korea
| | - Yong-Sik Kim
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
- College of Medicine, Soonchunhyang University, Cheonan, Chung-nam 31151, Republic of Korea
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29
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Kwon HS, Jeong GS, Jang BC. Cudratricusxanthone A Inhibits Lipid Accumulation and Expression of Inducible Nitric Oxide Synthase in 3T3-L1 Preadipocytes. Int J Mol Sci 2021; 22:ijms22020505. [PMID: 33419132 PMCID: PMC7825570 DOI: 10.3390/ijms22020505] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/20/2020] [Accepted: 01/04/2021] [Indexed: 12/18/2022] Open
Abstract
Cudratricusxanthone A (CTXA) is a natural bioactive compound extracted from the roots of Cudrania tricuspidata Bureau and has been shown to possess anti-inflammatory, anti-proliferative, and hepatoprotective activities. However, at present, anti-adipogenic and anti-inflammatory effects of CTXA on adipocytes remain unclear. In this study, we investigated the effects of CTXA on lipid accumulation and expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2, two known inflammatory enzymes, in 3T3-L1 preadipocytes. Strikingly, CTXA at 10 µM markedly inhibited lipid accumulation and reduced triglyceride (TG) content during 3T3-L1 preadipocyte differentiation with no cytotoxicity. On mechanistic levels, CTXA at 10 µM suppressed not only expression levels of CCAAT/enhancer-binding protein-α (C/EBP-α), peroxisome proliferator-activated receptor-γ (PPAR-γ), fatty acid synthase (FAS), and perilipin A, but also phosphorylation levels of signal transducer and activator of transcription-3 (STAT-3) and STAT-5 during 3T3-L1 preadipocyte differentiation. In addition, CTXA at 10 µM up-regulated phosphorylation levels of cAMP-activated protein kinase (AMPK) while down-regulating expression and phosphorylation levels of acetyl-CoA carboxylase (ACC) during 3T3-L1 preadipocyte differentiation. Moreover, CTXA at 10 µM greatly attenuated tumor necrosis factor (TNF)-α-induced expression of iNOS, but not COX-2, in 3T3-L1 preadipocytes. These results collectively demonstrate that CTXA has strong anti-adipogenic and anti-inflammatory effects on 3T3-L1 cells through control of the expression and phosphorylation levels of C/EBP-α, PPAR-γ, FAS, ACC, perilipin A, STAT-3/5, AMPK, and iNOS.
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Affiliation(s)
- Hyo-Shin Kwon
- Department of Molecular Medicine, College of Medicine, Keimyung University, Daegu 42601, Korea;
| | - Gil-Saeng Jeong
- College of Pharmacy, Keimyung University, Daegu 42601, Korea;
| | - Byeong-Churl Jang
- Department of Molecular Medicine, College of Medicine, Keimyung University, Daegu 42601, Korea;
- Correspondence: ; Tel.: +82-53-258-7404
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Wesolowski R, Kowenz-Leutz E, Zimmermann K, Dörr D, Hofstätter M, Slany RK, Mildner A, Leutz A. Myeloid transformation by MLL- ENL depends strictly on C/EBP. Life Sci Alliance 2021; 4:e202000709. [PMID: 33144337 PMCID: PMC7652399 DOI: 10.26508/lsa.202000709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 12/02/2022] Open
Abstract
Chromosomal rearrangements of the mixed-lineage leukemia gene MLL1 are the hallmark of infant acute leukemia. The granulocyte-macrophage progenitor state forms the epigenetic basis for myelomonocytic leukemia stemness and transformation by MLL-type oncoproteins. Previously, it was shown that the establishment of murine myelomonocytic MLL-ENL transformation, but not its maintenance, depends on the transcription factor C/EBPα, suggesting an epigenetic hit-and-run mechanism of MLL-driven oncogenesis. Here, we demonstrate that compound deletion of Cebpa/Cebpb almost entirely abrogated the growth and survival of MLL-ENL-transformed cells. Rare, slow-growing, and apoptosis-prone MLL-ENL-transformed escapees were recovered from compound Cebpa/Cebpb deletions. The escapees were uniformly characterized by high expression of the resident Cebpe gene, suggesting inferior functional compensation of C/EBPα/C/EBPβ deficiency by C/EBPε. Complementation was augmented by ectopic C/EBPβ expression and downstream activation of IGF1 that enhanced growth. Cebpe gene inactivation was accomplished only in the presence of complementing C/EBPβ, but not in its absence, confirming the Cebpe dependency of the Cebpa/Cebpb double knockouts. Our data show that MLL-transformed myeloid cells are dependent on C/EBPs during the initiation and maintenance of transformation.
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Affiliation(s)
| | | | | | - Dorothea Dörr
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | | | - Robert K Slany
- Department of Genetics, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | | | - Achim Leutz
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Institute of Biology, Humboldt University of Berlin, Berlin, Germany
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31
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Onomura D, Satoh S, Ueda Y, Dansako H, Kato N. Identification of ribavirin-responsive cis-elements for GPAM suppression in the GPAM genome. Biochem Biophys Res Commun 2020; 533:148-154. [PMID: 32933750 DOI: 10.1016/j.bbrc.2020.08.112] [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: 08/21/2020] [Accepted: 08/31/2020] [Indexed: 11/15/2022]
Abstract
Glycerol-3-phosphate acyltransferase, mitochondrial (GPAM) is a rate-limiting enzyme catalyzing triglyceride synthesis. Recently, we demonstrated that the anti-viral drug ribavirin (RBV) reduces GPAM expression by downregulating CCAAT/enhancer-binding protein α (C/EBPα). However, the precise mechanisms of GPAM suppression have remained unclear. Here, we found that RBV suppressed GPAM expression by downregulating not only C/EBPα, but also sterol regulatory element-binding protein-1c (SREBP-1c). We also found that cis-elements regulated by C/EBPα and SREBP-1c functioned as distal and proximal enhancers, respectively, to express hepatocyte- and adipocytes-specific GPAM variants. These results imply that RBV disrupts formation of the enhancer machineries on the GPAM genome by downregulating both transcription factors. Our findings may contribute to the development of treatments for fatty liver diseases caused by aberrant triglyceride synthesis.
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Affiliation(s)
- Daichi Onomura
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan
| | - Shinya Satoh
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan.
| | - Youki Ueda
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan
| | - Hiromichi Dansako
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan
| | - Nobuyuki Kato
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan
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Wang Q, Wang R, Feng B, Li S, Mahboob S, Shao C. Cloning and functional analysis of c/ebpα as negative regulator of dmrt1 in Chinese tongue sole (Cynoglossus semilaevis). Gene 2020; 768:145321. [PMID: 33221538 DOI: 10.1016/j.gene.2020.145321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 08/31/2020] [Revised: 10/25/2020] [Accepted: 11/14/2020] [Indexed: 01/11/2023]
Abstract
c/ebpα is a member of the C/EBP family of transcription factors, which are involved in cell growth and differentiation and have a conserved basic leucine zipper (bZIP) domain. However, little is known about its function in sex determination and differentiation. In the present study, c/ebpα was cloned from the gonads of Chinese tongue sole (Cynoglossus semilaevis). The full-length cDNA of c/ebpα was 1583 bp, with a 198-bp 5' UTR, a 446-bp 3' UTR, and a 939-bp open reading frame encoding a 312-amino acid peptide. qRT-PCR revealed that c/ebpα was predominantly expressed in undifferentiated gonads of male C. semilaevis at 30 dpf and 60 dpf and peaked at 60 dpf. Expression levels of c/ebpα in the testis were constantly higher than those in ovaries at all developmental stages. Moreover, a dual-luciferase assay revealed that c/ebpα could negatively regulate the male-determining gene dmrt1 in vitro. These results provide fundamental information indicating that C. semilaevis c/ebpa might be involved in early gonadal differentiation and functions as a negative regulator of dmrt1 by repressing its transcription.
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Affiliation(s)
- Qian Wang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
| | - Rui Wang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
| | - Bo Feng
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Shuo Li
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China
| | - Shahid Mahboob
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Changwei Shao
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China.
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Zhang S, Yan L, Kim SM. Vanadium-protein complex inhibits human adipocyte differentiation through the activation of β-catenin and LKB1/AMPK signaling pathway. PLoS One 2020; 15:e0239547. [PMID: 32970728 PMCID: PMC7514027 DOI: 10.1371/journal.pone.0239547] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 09/09/2020] [Indexed: 01/03/2023] Open
Abstract
Obesity is a common disease over the world and is tightly associated with diabetes mellitus, cardiovascular and cancer disease. Although our previous study showed that the synthetic vanadium-protein (V-P) complex had a better effect on antioxidant and antidiabetic, the relative molecular mechanisms are still entirely unknown. Hence, we investigated the effect of the synthetic V-P complex on adipocyte differentiation (adipogenesis) using human preadipocytes to clarify its molecular mechanisms of action. The primary human preadipocytes were cultured with and without V-P complex during adipocyte differentiation. The cell proliferation, lipid accumulation, and the protein expression of transcription factors and related enzymes were determined for the differentiated human preadipocytes. In this study, the 20 μg/mL of V-P complex reduced the lipid and triglyceride (TG) content by 74.47 and 57.39% (p < 0.05), respectively, and down-regulated the protein expressions of peroxisome proliferator-activated receptor-γ (PPARγ), CCAAT/enhancer-binding protein alpha (C/EBPα), sterol regulatory element-binding protein 1 (SREBP-1) and fatty acid synthase (FAS). Additionally, the V-P complex significantly up-regulated the protein levels of total β-catenin (t-β-catenin), nuclear β-catenin (n-β-catenin), phosphorylated adenosine monophosphate-activated protein kinase alpha (p-AMPKα) and liver kinase B1 (p-LKB1). These showed that the inhibitory effect of V-P complex on human adipogenesis was mediated by activating Wnt/β-catenin and LKB1/AMPK-dependent signaling pathway. Therefore, the synthetic V-P complex could be considered as a candidate for prevention and treatment of obesity.
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Affiliation(s)
- Shuang Zhang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People’s Republic of China
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon-do, Republic of Korea
| | - Lei Yan
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People’s Republic of China
| | - Sang Moo Kim
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon-do, Republic of Korea
- * E-mail:
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Park M, Han J, Lee HJ. Anti-Adipogenic Effect of Neferine in 3T3-L1 Cells and Primary White Adipocytes. Nutrients 2020; 12:nu12061858. [PMID: 32580414 PMCID: PMC7353287 DOI: 10.3390/nu12061858] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 05/25/2020] [Revised: 06/11/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023] Open
Abstract
Neferine, an alkaloid component extracted from lotus seed embryos, is known for its anti-inflammatory, anticancer, and antioxidant properties. However, the anti-adipogenic activity of neferine has not been thoroughly investigated. In this study, neferine was found to inhibit lipid accumulation in a dose-dependent manner during the differentiation of 3T3-L1 cells without inducing cytotoxicity. Real-time polymerase chain reaction and immunoblot analysis revealed the downregulation in 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 fatty acid synthase (FAS) and the upregulation in carnitine palmitoyltransferase-1 (CPT-1) and sirtuin 1 (SIRT1) levels following neferine treatment. Furthermore, neferine increased the phosphorylation of adenosine monophosphate-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC), which is an important regulator of fatty acid oxidation. Our result indicates that neferine attenuates adipogenesis and promotes lipid metabolism by activating AMPK-mediated signaling. Therefore, neferine may serve as a therapeutic candidate for obesity treatment.
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Affiliation(s)
- Miey Park
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea; (M.P.); (J.H.)
- Institute for Aging and Clinical Nutrition Research, Gachon University, Gyeonggi-do 13120, Korea
| | - Jinyoung Han
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea; (M.P.); (J.H.)
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Gyeonggi-do 13120, Korea; (M.P.); (J.H.)
- Institute for Aging and Clinical Nutrition Research, Gachon University, Gyeonggi-do 13120, Korea
- Correspondence: ; Tel.: +82-31-750-5968; Fax: +82-31-724-4411
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Qi Q, Wang Y, Wang X, Yang J, Xie Y, Zhou J, Li X, Wang B. Histone demethylase KDM4A regulates adipogenic and osteogenic differentiation via epigenetic regulation of C/EBPα and canonical Wnt signaling. Cell Mol Life Sci 2020; 77:2407-2421. [PMID: 31515577 DOI: 10.1007/s00018-019-03289-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 03/25/2019] [Revised: 08/08/2019] [Accepted: 08/28/2019] [Indexed: 02/06/2023]
Abstract
Epigenetic modifications play a central role in cell differentiation and development. In the current study, we have recognized lysine demethylase 4A (KDM4A) as a novel epigenetic regulator of osteoblast and adipocyte differentiation. Kdm4a expression was upregulated during osteogenesis and adipogenesis of primary marrow stromal cells and established stromal ST2 line. Overexpression of wild-type Kdm4a promoted adipogenic differentiation and blocked osteogenic differentiation of the progenitor cells. This effect was largely alleviated when the catalytically dead mutation was made. Conversely, depletion or inactivation of Kdm4a in undifferentiated progenitor cells inhibited the formation of adipocytes and promoted the differentiation of osteoblasts. Mechanism explorations showed that overexpression of Kdm4a upregulated the expression of secreted frizzled-related protein 4 (Sfrp4) and CCAAT/enhancer-binding protein α (C/ebpα). Chromatin immunoprecipitation assay demonstrated that KDM4A directly bound the promoters of Sfrp4 and C/ebpα, removed the histone methylation mark H3K9me3, and reduced DNA methylation levels of CpG in promoter regions of C/ebpα and Sfrp4. Furthermore, overexpression of Kdm4a inactivated canonical Wnt signaling. Moreover, activation of canonical Wnt signaling through silencing of Sfrp4 in ST2 attenuated the inhibition of osteogenic differentiation and the enhancement of adipogenic differentiation by KDM4A. These data have identified KDM4A as a novel regulator of osteoblast and adipocyte differentiation and suggest KDM4A inhibition as a potential therapeutic target for treating metabolic disorders such as osteoporosis.
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Affiliation(s)
- Qi Qi
- NHC Key Lab of Hormones and Development, Tianjin Key Lab of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Institute of Endocrinology, Tianjin Medical University, 22 Qi-Xiang-Tai Road, Box 126, Tianjin, 300070, China
| | - Yi Wang
- NHC Key Lab of Hormones and Development, Tianjin Key Lab of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Institute of Endocrinology, Tianjin Medical University, 22 Qi-Xiang-Tai Road, Box 126, Tianjin, 300070, China
| | - Xiaochen Wang
- NHC Key Lab of Hormones and Development, Tianjin Key Lab of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Institute of Endocrinology, Tianjin Medical University, 22 Qi-Xiang-Tai Road, Box 126, Tianjin, 300070, China
| | - Junying Yang
- College of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Yan Xie
- NHC Key Lab of Hormones and Development, Tianjin Key Lab of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Institute of Endocrinology, Tianjin Medical University, 22 Qi-Xiang-Tai Road, Box 126, Tianjin, 300070, China
| | - Jie Zhou
- NHC Key Lab of Hormones and Development, Tianjin Key Lab of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Institute of Endocrinology, Tianjin Medical University, 22 Qi-Xiang-Tai Road, Box 126, Tianjin, 300070, China
| | - Xiaoxia Li
- College of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Baoli Wang
- NHC Key Lab of Hormones and Development, Tianjin Key Lab of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Institute of Endocrinology, Tianjin Medical University, 22 Qi-Xiang-Tai Road, Box 126, Tianjin, 300070, China.
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Di Genua C, Valletta S, Buono M, Stoilova B, Sweeney C, Rodriguez-Meira A, Grover A, Drissen R, Meng Y, Beveridge R, Aboukhalil Z, Karamitros D, Belderbos ME, Bystrykh L, Thongjuea S, Vyas P, Nerlov C. C/EBPα and GATA-2 Mutations Induce Bilineage Acute Erythroid Leukemia through Transformation of a Neomorphic Neutrophil-Erythroid Progenitor. Cancer Cell 2020; 37:690-704.e8. [PMID: 32330454 PMCID: PMC7218711 DOI: 10.1016/j.ccell.2020.03.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/12/2020] [Accepted: 03/27/2020] [Indexed: 01/08/2023]
Abstract
Acute erythroid leukemia (AEL) commonly involves both myeloid and erythroid lineage transformation. However, the mutations that cause AEL and the cell(s) that sustain the bilineage leukemia phenotype remain unknown. We here show that combined biallelic Cebpa and Gata2 zinc finger-1 (ZnF1) mutations cooperatively induce bilineage AEL, and that the major leukemia-initiating cell (LIC) population has a neutrophil-monocyte progenitor (NMP) phenotype. In pre-leukemic NMPs Cebpa and Gata2 mutations synergize by increasing erythroid transcription factor (TF) expression and erythroid TF chromatin access, respectively, thereby installing ectopic erythroid potential. This erythroid-permissive chromatin conformation is retained in bilineage LICs. These results demonstrate that synergistic transcriptional and epigenetic reprogramming by leukemia-initiating mutations can generate neomorphic pre-leukemic progenitors, defining the lineage identity of the resulting leukemia.
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Affiliation(s)
- Cristina Di Genua
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Simona Valletta
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Mario Buono
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Bilyana Stoilova
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; NIHR Oxford Biomedical Research Center, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Connor Sweeney
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; NIHR Oxford Biomedical Research Center, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Alba Rodriguez-Meira
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Amit Grover
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Roy Drissen
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Yiran Meng
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Ryan Beveridge
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Zahra Aboukhalil
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; NIHR Oxford Biomedical Research Center, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Dimitris Karamitros
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; NIHR Oxford Biomedical Research Center, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Mirjam E Belderbos
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, the Netherlands
| | - Leonid Bystrykh
- European Research Institute for the Biology of Ageing, University Medical Center Groningen, 9713 AV Groningen, the Netherlands
| | - Supat Thongjuea
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; MRC WIMM Centre for Computational Biology, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK; NIHR Oxford Biomedical Research Center, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Paresh Vyas
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; NIHR Oxford Biomedical Research Center, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
| | - Claus Nerlov
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK.
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Abstract
Soy isoflavones are popular ingredients with anti-adipogenic and anti-lipogenic properties. The anti-adipogenic and anti-lipogenic properties of genistein are well-known, but those of genistin and glycitein remain unknown, and those of daidzein are characterized by contrasting data. Therefore, the purpose of our study was to investigate the effects of daidzein, glycitein, genistein, and genistin on adipogenesis and lipogenesis in 3T3-L1 cells. Proliferation of 3T3-L1 preadipocytes was unaffected by genistin and glycitein, but it was affected by 50 and 100 µM genistein and 100 µM daidzein for 48 h. Among the four isoflavones, only 50 and 100 µM genistin and genistein markedly suppressed lipid accumulation during adipogenesis in 3T3-L1 cells through a similar signaling pathway in a dose-dependent manner. Genistin and genistein suppress adipocyte-specific proteins and genes, such as peroxisome proliferator-activated receptor γ (PPARγ), CCAAT-enhancer-binding protein α (C/EBPα), and adipocyte binding protein 2 (aP2)/fatty acid-binding protein 4 (FABP4), and lipogenic enzymes such as ATP citrate lyase (ACL), acetyl-CoA carboxylase 1 (ACC1), and fatty acid synthase (FAS). Both isoflavones also activate AMP-activated protein kinase α (AMPKα), an essential factor in adipocyte differentiation, and inhibited sterol regulatory element-binding transcription factor 1c (SREBP-1c). These results indicate that genistin is a potent anti-adipogenic and anti-lipogenic agent.
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Affiliation(s)
- Yae Rim Choi
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea (J.S.)
- Department of Food Science and Engineering, Ewha Womans University, Seoul 03760, Korea
| | - Jaewon Shim
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea (J.S.)
| | - Min Jung Kim
- Research Division of Food Functionality, Korea Food Research Institute, Wanju 55365, Korea (J.S.)
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Liu S, Chang X, Yu J, Xu W. Cerasus humilis Cherry Polyphenol Reduces High-Fat Diet-Induced Obesity in C57BL/6 Mice by Mitigating Fat Deposition, Inflammation, and Oxidation. J Agric Food Chem 2020; 68:4424-4436. [PMID: 32227855 DOI: 10.1021/acs.jafc.0c01617] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study aimed to determine the anti-obesity effects and mechanisms of Cerasus humilis polyphenol (CHP) in C57BL/6 obese mice and 3T3-L1 cells. High-performance liquid chromatography-electrospray ionization-tandem mass spectrometry was used for the qualitative and quantitative identification of CHP components. The obese mice, induced by feeding high-fat diet (HFD), were treated with CHP (250 mg/kg/day) by gavage for 12 weeks. Orlistat was gavaged at 15.6 mg/kg bw/day, as a positive control group. The analysis revealed that the main components of CHP were procyanidin B2, cyanidin-3-glucoside, and pelargonidin-3-glucoside. CHP dietary supplementation significantly reduced body weight and improved blood lipid measurements in HFD-fed mice (p < 0.01). Moreover, it inhibited mRNA expression of miR-122, Srebp-1c, and Cpt1a (p < 0.01) and reduced hepatic lipid deposition, as seen by hematoxylin and eosin staining. CHP downregulated the protein expression of PPARγ and C/EBPα in HFD-induced obese mice and inhibited adipocyte differentiation (p < 0.01). Compared with the HFD group, CHP supplementation had an obvious anti-inflammatory effect (decreased protein expression, such as TNF-α, IL-6, and MCP1), reducing leptin levels and TNF-α secretion in serum and cells (p < 0.01). CHP significantly inhibited the expression of miR-27a/b (53.3 and 29.9%, p < 0.01) in mice retroperitoneal white adipocytes, enhancing the expression of the target gene Prdm16 and significantly upregulating Sirt1 (105.5%, p < 0.01) compared with the HFD group. Moreover, CHP supplementation effectively improved oxidative stress (ROS, T-AOC, SOD, CAT, and GSH-Px) induced by HFD in obese mice (p < 0.01). Thus, CHP mitigates adipocyte differentiation, browning of white adipocytes, and reduction of inflammation and antioxidant activity to reduce obesity. Consequently, these results provide novel insights into the anti-obesity roles of CHP in HFD-induced obesity.
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Affiliation(s)
- Suwen Liu
- College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
| | - Xuedong Chang
- College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
- Hebei Yanshan Special Industrial Technology Research Institute, Qinhuangdao, Hebei 066004, China
| | - Jincheng Yu
- College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
| | - Weifeng Xu
- College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
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Wang W, Yang Q, Xie K, Wang P, Luo R, Yan Z, Gao X, Zhang B, Huang X, Gun S. Transcriptional Regulation of HMOX1 Gene in Hezuo Tibetan Pigs: Roles of WT1, Sp1, and C/EBPα. Genes (Basel) 2020; 11:genes11040352. [PMID: 32224871 PMCID: PMC7231170 DOI: 10.3390/genes11040352] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/24/2020] [Accepted: 03/24/2020] [Indexed: 01/05/2023] Open
Abstract
Heme oxygenase 1 (HMOX1) is a stress-inducing enzyme with multiple cardiovascular protective functions, especially in hypoxia stress. However, transcriptional regulation of swine HMOX1 gene remains unclear. In the present study, we first detected tissue expression profiles of HMOX1 gene in adult Hezuo Tibetan pig and analyzed the gene structure. We found that the expression level of HMOX1 gene was highest in the spleen of the Hezuo Tibetan pig, followed by liver, lung, and kidney. A series of 5’ deletion promoter plasmids in pGL3-basic vector were used to identify the core promoter region and confirmed that the minimum core promoter region of swine HMOX1 gene was located at −387 bp to −158 bp region. Then we used bioinformatics analysis to predict transcription factors in this region. Combined with site-directed mutagenesis and RNA interference assays, it was demonstrated that the three transcription factors WT1, Sp1 and C/EBPα were important transcription regulators of HMOX1 gene. In summary, our study may lay the groundwork for further functional study of HMOX1 gene.
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Affiliation(s)
- Wei Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Qiaoli Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Kaihui Xie
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Pengfei Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Ruirui Luo
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Zunqiang Yan
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Xiaoli Gao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Bo Zhang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Xiaoyu Huang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
| | - Shuangbao Gun
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (W.W.); (Q.Y.); (K.X.); (P.W.); (R.L.); (Z.Y.); (X.G.); (B.Z.); (X.H.)
- Gansu Research Center for Swine Production Engineering and Technology, Lanzhou 730070, China
- Correspondence: ; Tel.: +86-931-763-1804
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40
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Lee MS, Kim Y. Mulberry Fruit Extract Ameliorates Adipogenesis via Increasing AMPK Activity and Downregulating MicroRNA-21/143 in 3T3-L1 Adipocytes. J Med Food 2020; 23:266-272. [PMID: 32191574 DOI: 10.1089/jmf.2019.4654] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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] [Indexed: 12/27/2022] Open
Abstract
Mulberry (Morus alba L.) fruits have long been used in traditional medicine and as edible berries in many countries. This study investigated the antiadipogenic effect of high hydrostatic pressure mulberry fruit extract (MFE) during 3T3-L1 adipocyte differentiation. MFE decreased lipid and triglyceride accumulation and glycerol-3-phosphate dehydrogenase activity. The mRNA expression levels of genes related to adipogenesis, such as the adipocyte protein 2, proliferator-activated receptor-γ, and CCAAT/enhancer binding protein-α, were suppressed by MFE. They also reduced microRNA (miR)-21 and miR-143 expression, which are involved in adipogenesis. In contrast, adenosine monophosphate-activated protein kinase (AMPK) activity was increased by MFE. These results suggested that MFE may suppress adipogenesis through modulating miR-21/143 expression and AMPK activity in 3T3-L1 adipocytes, which may be useful as antiobesity food agents.
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Affiliation(s)
- Mak-Soon Lee
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Yangha Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
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Wang N, Li Q, Liu H, Lin L, Han W, Hao W. Role of C/EBPα hypermethylation in diesel engine exhaust exposure-induced lung inflammation. Ecotoxicol Environ Saf 2019; 183:109500. [PMID: 31450033 DOI: 10.1016/j.ecoenv.2019.109500] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 05/17/2019] [Revised: 07/27/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
Exposure to diesel engine exhaust (DEE) impairs lung function. But the underlying mechanisms are still not fully understood. The aim of this study was to investigate the effects of long-term DEE exposure on lung inflammation and the underlying mechanisms. Sprague-Dawley male rats were exposed to DEE with 3 mg/m3 of diesel exhaust particles (DEP) for 12 weeks. Then urine, blood, bronchoalveolar lavage fluid (BALF), and lung tissue were collected for the determination of biochemistry indexes, DNA methylation status, and histological changes in the lung. The results showed that the metabolites of polycyclic aromatic hydrocarbons (PAHs) 2-hydroxyphenanthrene (2-OHPh) and 9-OHPh, and 8-hydroxy-2'-deoxyguanosine (8-OHdG), and malondialdehyde (MDA) level were higher in urine of DEE-exposed rats than control group. The level of proinflammatory cytokines IL-8, IL-6, and TNF-α was significantly higher in serum (1.8, 3.5, and nearly 1.0-fold increase, respectively), BALF (2.2, 3.8, and 2.0-fold increase, respectively) and lung tissues (3.5, 4.3, and 2.4-fold increase, respectively) of DEE-exposed rats than control group. While the level of clara cell secretory protein (CC16) and pulmonary surfactant protein D (SP-D) with anti-inflammatory property was obviously lower in serum (reduction of 29% and 38%, respectively), BALF (reduction of 50% and 46%, respectively) and lung tissues (reduction of 50% and 55%, respectively) of DEE-exposed rats than control group. Exposure to DEE also resulted in significant increases in total white blood cell (WBC), neutrophil, eosinophil, and lymphocyte number in BALF. Airway inflammation and remolding were apparent in DEE group. The methylation level of CCAAT/enhancer-binding protein alpha (C/EBPα) promoter was markedly increased (about 3.2-fold increase), and its mRNA and protein expression were significantly decreased (about 62% and 68% decrease, respectively) in the lungs of DEE-exposed rats compared with the group. Further, cell experiments were performed to investigate the relationship between C/EBPα and CC16, and CC16 function under DEP conditions. The results showed that DEP inhibited CC16 expression via methylation of C/EBPα promoter, and the increase of CC16 level significantly relieved the proinflammatory effects caused by DEP exposure. In conclusion, our data indicated that long-term exposure to DEE can cause lung inflammation, at least in part via methylation of C/EBPα promoter, and inhibition of CC16 expression.
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Affiliation(s)
- Ning Wang
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Qinghai Li
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Hong Liu
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Li Lin
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Wei Han
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China.
| | - Wanming Hao
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China.
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Zhang L, Zhou F, Yu X, Zhu Y, Zhou Y, Liu J, Liu Y, Ma Q, Zhang Y, Wang W, Chen N. C/EBPα deficiency in podocytes aggravates podocyte senescence and kidney injury in aging mice. Cell Death Dis 2019; 10:684. [PMID: 31527620 PMCID: PMC6746733 DOI: 10.1038/s41419-019-1933-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/14/2019] [Accepted: 08/26/2019] [Indexed: 11/29/2022]
Abstract
Kidney aging leads to an increased incidence of end-stage renal disease (ESRD) in the elderly, and aging is a complex biological process controlled by signaling pathways and transcription factors. Podocyte senescence plays a central role in injury resulting from kidney aging. Here, we demonstrated the critical role of C/EBPα in podocyte senescence and kidney aging by generating a genetically modified mouse model of chronological aging in which C/EBPα was selectively deleted in podocytes and by overexpressing C/EBPα in cultured podocytes, in which premature senescence was induced by treatment with adriamycin. Moreover, we illuminated the mechanisms by which podocyte senescence causes tubular impairment by stimulating HK-2 cells with bovine serum albumin (BSA) and chloroquine. Our findings suggest that C/EBPα knockout in podocytes aggravates podocyte senescence through the AMPK/mTOR pathway, leading to glomerulosclerosis, and that subsequent albuminuria exacerbates the epithelial-mesenchymal transdifferentiation of senescent tubular cells by suppressing autophagy. These observations highlight the importance of C/EBPα as a new potential target in kidney aging.
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Affiliation(s)
- Liwen Zhang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Fangfang Zhou
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Xialian Yu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Yufei Zhu
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, P.R. China
| | - Ying Zhou
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Jian Liu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Yunzi Liu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Qingyang Ma
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, P.R. China
| | - Yuchao Zhang
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, P.R. China
| | - Weiming Wang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China.
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China.
| | - Nan Chen
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
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Boughanem H, Cabrera-Mulero A, Millán-Gómez M, Garrido-Sánchez L, Cardona F, Tinahones FJ, Moreno-Santos I, Macías-González M. Transcriptional Analysis of FOXO1, C/EBP-α and PPAR-γ2 Genes and Their Association with Obesity-Related Insulin Resistance. Genes (Basel) 2019; 10:genes10090706. [PMID: 31547433 PMCID: PMC6770962 DOI: 10.3390/genes10090706] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 07/26/2019] [Revised: 08/28/2019] [Accepted: 09/10/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Obesity is associated with several comorbid disorders, ranging from cardiovascular diseases to insulin resistance. In this context, visceral adipose tissue (VAT) seems to have a close connection with insulin resistance. In our study, we hypothesized that the expression profile of key adipogenic genes, such as proliferator-activated receptor γ type 2 (PPAR-γ2), CCAAT/enhancer-binding protein type α (C/EBP-α), and forkhead box protein class O type 1 (FOXO1) in VAT should shed light on their association with obesity-related insulin resistance. METHODS To test this idea, we studied the expression profile of C/EBP-α, FOXO1 and PPAR-γ2 in VAT from non-obese individuals, and low insulin (LIR-MO) and high insulin morbidly obese (HIR-MO) subjects, through a combination of RT-qPCR, co-immunoprecipitation, ELISA, Western blot analysis and EMSA assays. RESULTS Our results show that C/EBP-α and PPAR-γ2 were down-expressed in HIR-MO individuals, while FOXO1 was overexpressed. In addition, the PPAR-γ2-RXR-α heterodimer showed weak activity and bound weakly to the putative IGFBP-2-PPRE promoter sequence in VAT from HIR-MO subjects when compared with LIR-MO individuals. CONCLUSIONS These results show that PPAR-γ2, C/EBP-α, FOXO1 and IGFBP-2 have a close relationship with insulin resistance in VAT of morbidly obese individuals.
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Affiliation(s)
- Hatim Boughanem
- Biomedical Research Institute of Malaga (IBIMA), Faculty of Science, University of Malaga, 29010 Málaga, Spain.
| | - Amanda Cabrera-Mulero
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Mercedes Millán-Gómez
- CIBERCV (CIBER in cardiovascular diseases), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
- Unidad de Gestión Clínica Área del Corazón, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
| | - Lourdes Garrido-Sánchez
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Fernando Cardona
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Francisco José Tinahones
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
| | - Inmaculada Moreno-Santos
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
| | - Manuel Macías-González
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, University of Malaga (IBIMA), 29010 Málaga, Spain.
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition CB06/03/0018), "Instituto de Salud Carlos III", 28029 Madrid, Spain.
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González-González A, García Nieto E, González A, Sánchez-Fernández C, Alonso-González C, Menéndez-Menéndez J, Gómez-Arozamena J, Cos S, Martínez-Campa C. Melatonin Modulation of Radiation and Chemotherapeutics-induced Changes on Differentiation of Breast Fibroblasts. Int J Mol Sci 2019; 20:ijms20163935. [PMID: 31412584 PMCID: PMC6719206 DOI: 10.3390/ijms20163935] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 07/11/2019] [Revised: 08/05/2019] [Accepted: 08/10/2019] [Indexed: 02/07/2023] Open
Abstract
Melatonin exerts oncostatic actions and sensitizes tumor cells to chemotherapeutics or radiation. In our study, we investigated the effects of docetaxel, vinorelbine, and radiation on human breast fibroblasts and its modulation by melatonin. Docetaxel or vinorelbine inhibits proliferation and stimulates the differentiation of breast preadipocytes, by increasing C/EBPα and PPARγ expression and by downregulating tumor necrosis factor α (TNFα), interleukin 6 (IL-6), and IL-11 expression. Radiation inhibits both proliferation and differentiation through the downregulation of C/EBPα and PPARγ and by stimulating TNFα expression. In addition, docetaxel and radiation decrease aromatase activity and expression by decreasing aromatase promoter II and cyclooxygenases 1 and 2 (COX-1 and COX-2) expression. Melatonin potentiates the stimulatory effect of docetaxel and vinorelbine on differentiation and their inhibitory effects on aromatase activity and expression, by increasing the stimulatory effect on C/EBPα and PPARγ expression and the downregulation of antiadipogenic cytokines and COX expression. Melatonin also counteracts the inhibitory effect of radiation on differentiation of preadipocytes, by increasing C/EBPα and PPARγ expression and by decreasing TNFα expression. Melatonin also potentiates the inhibitory effect exerted by radiation on aromatase activity and expression by increasing the downregulation of promoter II, and COX-1 and COX-2 expression. Our findings suggest that melatonin modulates regulatory effects induced by chemotherapeutic drugs or radiation on preadipocytes, which makes it a promising adjuvant for chemotherapy and radiotherapy sensibilization.
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Affiliation(s)
- Alicia González-González
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain
| | - Enrique García Nieto
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain
| | - Alicia González
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain.
| | - Cristina Sánchez-Fernández
- Department of Anatomy and Cellular Biology, School of Medicine, University of Cantabria, 39011 Santander, Spain
| | - Carolina Alonso-González
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain.
| | - Javier Menéndez-Menéndez
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain
| | - José Gómez-Arozamena
- Department of Medical Physics, School of Medicine, University of Cantabria, 39011 Santander, Spain
| | - Samuel Cos
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain
| | - Carlos Martínez-Campa
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39011 Santander, Spain
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Schmidt L, Heyes E, Scheiblecker L, Eder T, Volpe G, Frampton J, Nerlov C, Valent P, Grembecka J, Grebien F. CEBPA-mutated leukemia is sensitive to genetic and pharmacological targeting of the MLL1 complex. Leukemia 2019; 33:1608-1619. [PMID: 30679799 PMCID: PMC6612510 DOI: 10.1038/s41375-019-0382-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 11/28/2018] [Accepted: 12/24/2018] [Indexed: 12/12/2022]
Abstract
The gene encoding the transcription factor C/EBPα is mutated in 10-15% of acute myeloid leukemia (AML) patients. N-terminal CEBPA mutations cause ablation of full-length C/EBPα without affecting the expression of a shorter oncogenic isoform, termed p30. The mechanistic basis of p30-induced leukemogenesis is incompletely understood. Here, we demonstrate that the MLL1 histone-methyltransferase complex represents a critical actionable vulnerability in CEBPA-mutated AML. Oncogenic C/EBPα p30 and MLL1 show global co-localization on chromatin and p30 exhibits robust physical interaction with the MLL1 complex. CRISPR/Cas9-mediated mutagenesis of MLL1 results in proliferation arrest and myeloid differentiation in C/EBPα p30-expressing cells. In line, CEBPA-mutated hematopoietic progenitor cells are hypersensitive to pharmacological targeting of the MLL1 complex. Inhibitor treatment impairs proliferation and restores myeloid differentiation potential in mouse and human AML cells with CEBPA mutations. Finally, we identify the transcription factor GATA2 as a direct critical target of the p30-MLL1 interaction. Altogether, we show that C/EBPα p30 requires the MLL1 complex to regulate oncogenic gene expression and that CEBPA-mutated AML is hypersensitive to perturbation of the MLL1 complex. These findings identify the MLL1 complex as a potential therapeutic target in AML with CEBPA mutations.
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Affiliation(s)
- Luisa Schmidt
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
- Institute for Medical Biochemistry, University of Veterinary Medicine, Vienna, Austria
| | - Elizabeth Heyes
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | | | - Thomas Eder
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Giacomo Volpe
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, B15 2TT, Birmingham, UK
- Key Laboratory of Regenerative Biology, Joint School of Life Sciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences and Guangzhou Medical University, Guangzhou, China
| | - Jon Frampton
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, B15 2TT, Birmingham, UK
| | - Claus Nerlov
- Medical Research Council Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology & Hemostaseology and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria
| | | | - Florian Grebien
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria.
- Institute for Medical Biochemistry, University of Veterinary Medicine, Vienna, Austria.
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Wang Z, Hu J, Hamzah SS, Ge S, Lin Y, Zheng B, Zeng S, Lin S. n-Butanol Extract of Lotus Seeds Exerts Antiobesity Effects in 3T3-L1 Preadipocytes and High-Fat Diet-Fed Mice via Activating Adenosine Monophosphate-Activated Protein Kinase. J Agric Food Chem 2019; 67:1092-1103. [PMID: 30621393 DOI: 10.1021/acs.jafc.8b05281] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, the antiobesity effects of n-butanol extract of lotus seeds (LBE) were evaluated in cultured 3T3-L1 preadipocytes and in high-fat diet (HFD)-fed mice. LBE decreased lipid contents in mature 3T3-L1 cells without obvious cytotoxicity. Meanwhile, LBE supplementation also led to weight loss and improved plasma lipid profiles in HFD-fed mice. Furthermore, LBE could activate AMP-activated protein kinase (AMPK) accompanied by down-regulation of lipogenesis related genes (PPARγ, aP2, LPL, C/EBPα, FAS, SREBP-1c) and up-regulation of lipolysis genes (adiponectin and PPARα) in vitro and in vivo. Collectively, our data demonstrated LBE possesses antiadipogenic and antilipogenic activities which are, at least partially, mediated by the activation of AMPK signaling pathways.
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Affiliation(s)
- Zhenyu Wang
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
| | - Jiamiao Hu
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
| | - Siti Sarah Hamzah
- Institute for Medical Research , Jalan Pahang, 50588 Kuala Lumpur , Malaysia
| | - Shenghan Ge
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
| | - Yilin Lin
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
| | - Baodong Zheng
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
| | - Shaoxiao Zeng
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
| | - Shaoling Lin
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , 350002 , P.R. China
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Shvachko LP, Zavelevich MP, Gluzman DF, Kravchuk IV, Telegeev GD. Vitamin Е activates expression of С/EBP alpha transcription factor and G-CSF receptor in leukemic K562 cells. Exp Oncol 2018; 40:328-331. [PMID: 30593760] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Chronic myeloid leukemia (CML) is a clonal hematopoietic stem cell disorder associated with the activity of BCR-ABL fusion oncogene. Tyrosine kinase inhibitors are the current treatment of CML, but secondary mutations finally contribute to therapy resistance and blast crisis of the disease. The search for the novel compounds for the effective control of CML is now in the spotlight. The progression of CML to blast crisis is correlated with down-modulation of C/EBP alpha. Therefore, C/EBP alpha may be considered as a putative target in differentiation therapies in myeloid leukemias. The aim of the study was to assess the potential of vitamin E as the possible inducer of C/EBP alpha expression in BCR-ABL-positive CML K562 cells. MATERIALS AND METHODS RNA extracted from K562 cells cultured with valproic acid or vitamin E was converted to cDNA, RT-PCR reactions were carried out using HotStarTaq DNA polymerase with primers for C/EBP alpha and granulocyte colony-stimulating factor receptor (G-CSFR). RESULTS We have not found detectable expression of C/EBP alpha in K562 cells. Upon 48-h culture with vitamin E at a dose of 100 µM, K562 cells expressed both C/EBP alpha and G-CSFR. CONCLUSION Vitamin E restored the expression of C/EBP alpha mRNA in chronic myelogenous leukemia K562 cells. In this setting, G-CSFR expression in vitamin E treated K562 cells seems to suggest the activation to granulocytic differentiation. It should be further elucidated whether such effects of vitamin E on C/EBP alpha transcription factor are direct or mediated indirectly due to antioxidant properties of vitamin E.
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MESH Headings
- Antineoplastic Agents/pharmacology
- CCAAT-Enhancer-Binding Protein-alpha/biosynthesis
- CCAAT-Enhancer-Binding Protein-alpha/genetics
- Cell Line, Tumor
- Fusion Proteins, bcr-abl/genetics
- Gene Expression Regulation, Leukemic
- Humans
- K562 Cells
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Receptors, Granulocyte Colony-Stimulating Factor/biosynthesis
- Receptors, Granulocyte Colony-Stimulating Factor/genetics
- Transcriptional Activation/drug effects
- Valproic Acid/pharmacology
- Vitamin E/pharmacology
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Affiliation(s)
- L P Shvachko
- Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv 03680, Ukraine
| | - M P Zavelevich
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, Kyiv 03022, Ukraine
| | - D F Gluzman
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, Kyiv 03022, Ukraine
| | - I V Kravchuk
- Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv 03680, Ukraine
| | - G D Telegeev
- Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv 03680, Ukraine
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48
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Chen J, Bao C, Kim JT, Cho JS, Qiu S, Lee HJ. Sulforaphene Inhibition of Adipogenesis via Hedgehog Signaling in 3T3-L1 Adipocytes. J Agric Food Chem 2018; 66:11926-11934. [PMID: 30354116 DOI: 10.1021/acs.jafc.8b04330] [Citation(s) in RCA: 36] [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] [Indexed: 06/08/2023]
Abstract
Obesity is a risk factor for numerous metabolic disorders. In this study, we investigated the effects of the isothiocyanates sulforaphane (SA) and sulforaphene (SE) on adipogenesis in 3T3-L1 adipocytes. SE, a compound that is abundant in radish, inhibited adipogenesis by suppressing the adipogenic transcription factors peroxisome proliferator-activated receptor γ (PPARγ, 69.2 ± 2.4%, P < 0.05) and CCAAT/enhancer-binding protein α (C/EBPα, 36.1 ± 3.1%, P < 0.05), thereby reducing fat accumulation in 3T3-L1 adipocytes (45.6 ± 2.7%, P < 0.05); SA was less effective. SE exerted these activities through the activation of the Hedgehog (Hh) signaling pathway by restoring Smo ((2.1 ± 0.2)-fold, P < 0.05) and Gli1 ((2.8 ± 0.1)-fold, P < 0.05) expression, which was suppressed by adipogenic signals. These effects of SE were abrogated by treatment with the Hh inhibitor vismodegib. Thus, SE inhibits adipocyte differentiation via Hh signaling and may be an effective natural agent for preventing adipocyte hyperplasia and obesity.
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Affiliation(s)
- Jing Chen
- Department of Food Science and Technology , Chung-Ang University , Anseong 17546 , South Korea
| | - Cheng Bao
- Department of Food Science and Technology , Chung-Ang University , Anseong 17546 , South Korea
| | - Jin Tae Kim
- Department of Food Science and Technology , Chung-Ang University , Anseong 17546 , South Korea
| | - Jae Seok Cho
- Department of Food Science and Technology , Chung-Ang University , Anseong 17546 , South Korea
| | - Shuai Qiu
- Department of Food Science and Technology , Chung-Ang University , Anseong 17546 , South Korea
| | - Hong Jin Lee
- Department of Food Science and Technology , Chung-Ang University , Anseong 17546 , South Korea
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Kim CY, Kim KH. Selenate Prevents Adipogenesis through Induction of Selenoprotein S and Attenuation of Endoplasmic Reticulum Stress. Molecules 2018; 23:molecules23112882. [PMID: 30400605 PMCID: PMC6278472 DOI: 10.3390/molecules23112882] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 10/17/2018] [Revised: 11/01/2018] [Accepted: 11/02/2018] [Indexed: 12/05/2022] Open
Abstract
The conversion of preadipocytes to adipocytes (adipogenesis) is a potential target to treat or prevent obesity. Selenate, an inorganic form of selenium, elicits diverse health benefits, mainly through its incorporation into selenoproteins. The individual roles of selenium and certain selenoproteins have been reported. However, the effects of selenate treatment on selenoproteins in adipocytes are unclear. In this study, the effects of selenate pretreatment on selenoprotein and endoplasmic reticulum (ER) stress during adipogenesis were examined in vitro. The selenate pretreatment dose-dependently suppressed the adipogenesis of 3T3-L1 preadipocytes. The selenate pretreatment at 50 μM for 24 h almost completely suppressed adipogenesis without cytotoxic effects. The expression of the adipogenic genes peroxisome proliferator-activated receptor gamma, CCAAT-enhancer binding protein alpha, and leptin was suppressed by selenate. This pretreatment also upregulated selenoprotein S (SEPS1), an ER resident selenoprotein that reduces ER stress, and prevented dexamethasone-induced SEPS1 degradation during the early stage of adipogenesis. The selenate-inhibited adipogenesis was associated with an attenuation of ER stress. The expression of the ER stress marker genes was upregulated during the early stage of differentiation, whereas the selenate pretreatment suppressed the mRNA expression of the XBP1 and C/EBP homologous protein. The collective data suggest a preventive role of selenate and SEPS1 in adipogenesis, and support a novel dietary approach to prevent obesity.
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Affiliation(s)
- Choon Young Kim
- Department of Food and Nutrition, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Korea.
| | - Kee-Hong Kim
- Department of Food Science, Purdue University, West Lafayette, IN 47897, USA.
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Liu D, Yu H, Gao L, Li A, Deng H, Zhang Z, Tao S, Liu Z, Yang Q, Pang Q. The inhibition of GSK-3β promotes the production of reactive oxygen species via β-catenin/C/EBPα signaling in the spleen of zebrafish (Danio rerio). Fish Shellfish Immunol 2018; 76:110-120. [PMID: 29477497 DOI: 10.1016/j.fsi.2018.02.040] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/18/2018] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
In this study, the mechanism that the inhibition of glycogen synthase kinase-3β (GSK-3β) promotes the production of reactive oxygen species (ROS) via β-catenin/CCAAT/enhancer binding protein α (C/EBPα) signaling was investigated in the spleen of zebrafish (Danio rerio). The results demonstrated that the inhibition of GSK-3β induced the mRNA expression of β-catenin and C/EBPα by lithium (Li) treatments or GSK-3β RNA interference. The levels of hydrogen peroxide (H2O2), superoxide anion (O2.-), and hydroxy radical (·OH) as well as the activity of superoxide dismutase (SOD) were increased, while the activities of catalase (CAT) and glutathione peroxidase (GSH-PX) were decreased in the spleen and ZF4 cells of zebrafish by Li+ treatments. In addition, GSK-3β RNA interference increased ROS levels and decreased the activities of CAT and GSH-PX in the spleen. The fluorescence intensity of ROS was increased but the mitochondrial membrane potential (MMP) was decreased by Li+ treatments in ZF4 cells labeled with 2',7'-dichlorofluorescein diacetate (DCFH-DA) and Rhodamine-123, respectively. The results of present study indicated that the inhibition of GSK-3β promoted the ROS production via β-catenin/C/EBPα signaling in the spleen of zebrafish, and the balance between ROS and antioxidants could be destroyed by the GSK-3β/β-catenin/C/EBPα signaling. The results may be a valuable contribution to understanding the modulatory mechanism of GSK-3β/β-catenin/C/EBPα signaling on the antioxidant system in fish species.
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Affiliation(s)
- Dongwu Liu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Hairui Yu
- College of Biological and Agricultural Engineering, Weifang Bioengineering Technology Research Center, Weifang University, Weifang 261061, China
| | - Lili Gao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Ao Li
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Hongkuan Deng
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Zhuangzhuang Zhang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Shiyi Tao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Ziqiang Liu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Qiao Yang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Qiuxiang Pang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China.
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