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Wu Y, Sun Y, Song Y, Wang J, Han Y, Yang N, Lin H, Yin Y, Han X. PPA1 promotes adipogenesis by regulating the stability of C/EBPs. Cell Death Differ 2024:10.1038/s41418-024-01309-2. [PMID: 38762596 DOI: 10.1038/s41418-024-01309-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 04/24/2024] [Accepted: 05/01/2024] [Indexed: 05/20/2024] Open
Abstract
Adipogenesis significantly contributes to healthy adipose tissue expansion in obesity. Increasing adipocyte number or function to alleviate adipose tissue overload could serve as a therapeutic strategy for both lipodystrophy and obesity-related metabolic syndrome. Inorganic pyrophosphatase (PPA1) is an enzyme that catalyzes the hydrolysis of pyrophosphate (PPi) and is involved in many biochemical reactions, but its function in adipose tissue has not been studied previously. In this study, we demonstrated that adipose-specific PPA1 knockout (PPA1AKO) mice showed lipodystrophy and spontaneously developed hepatic steatosis and severe insulin resistance under normal chow diet feeding. PPA1 deficiency suppressed the differentiation of primary adipocyte precursors and 3T3-L1 cells. Notably, PPA1 overexpression can restore inhibited adipogenesis in preadipocytes isolated from db/db mice and type 2 diabetes patients. Mechanistic studies have revealed that PPA1 acts as a positive regulator of early adipocyte differentiation by promoting CCAAT/enhancer-binding proteinβ and δ (C/EBPβ and δ) protein stability. Moreover, the function of PPA1 in adipogenesis is independent of its PPi catalytic activity. Collectively, our in vivo and in vitro findings demonstrated that PPA1 is a novel critical upstream regulator of adipogenesis, controlling adipose tissue development and whole-body metabolic homeostasis.
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Affiliation(s)
- Yangyang Wu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
- Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing Medical University, Nanjing, China
| | - Yue Sun
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yuqing Song
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiateng Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ye Han
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Nan Yang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Haiyan Lin
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Ye Yin
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Xiao Han
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, Jiangsu, China.
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Pei J, Zou D, Li L, Kang L, Sun M, Li X, Chen Q, Chen D, Qu B, Gao X, Lin Z. Senp7 deficiency impairs lipid droplets maturation in white adipose tissues via Plin4 deSUMOylation. J Biol Chem 2024; 300:107319. [PMID: 38677512 PMCID: PMC11134554 DOI: 10.1016/j.jbc.2024.107319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/29/2024] Open
Abstract
Lipid metabolism is important for the maintenance of physiological homeostasis. Several members of the small ubiquitin-like modifier (SUMO)-specific protease (SENP) family have been reported as the regulators of lipid homeostasis. However, the function of Senp7 in lipid metabolism remains unclear. In this study, we generated both conventional and adipocyte-specific Senp7 KO mice to characterize the role of Senp7 in lipid metabolism homeostasis. Both Senp7-deficient mice displayed reduced white adipose tissue mass and decreased size of adipocytes. By analyzing the lipid droplet morphology, we demonstrated that the lipid droplet size was significantly smaller in Senp7-deficient adipocytes. Mechanistically, Senp7 could deSUMOylate the perilipin family protein Plin4 to promote the lipid droplet localization of Plin4. Our results reveal an important role of Senp7 in the maturation of lipid droplets via Plin4 deSUMOylation.
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Affiliation(s)
- Jingwen Pei
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Dayuan Zou
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-Related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Lu Li
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Lulu Kang
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Minli Sun
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xu Li
- Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Qianyue Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Danning Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Bin Qu
- Biophysics, Center for Integrative Physiology and Molecular Medicine (CIPMM), School of Medicine, Saarland University, Homburg, Germany
| | - Xiang Gao
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China.
| | - Zhaoyu Lin
- State Key Laboratory of Pharmaceutical Biotechnology, Ministry of Education Key Laboratory of Model Animal for Disease Study, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China.
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3
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Wang L, Zeng W, Wang C, Lu Y, Xiong X, Chen S, Huang Q, Yan F, Huang Q. SUMOylation and coupling of eNOS mediated by PIAS1 contribute to maintenance of vascular homeostasis. FASEB J 2024; 38:e23362. [PMID: 38102979 DOI: 10.1096/fj.202301963r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/16/2023] [Accepted: 11/27/2023] [Indexed: 12/17/2023]
Abstract
Endothelial dysfunction (ED) is commonly considered a crucial initiating step in the pathogenesis of numerous cardiovascular diseases. The coupling of endothelial nitric oxide synthase (eNOS) is important in maintaining normal endothelial functions. However, it still remains elusive whether and how eNOS SUMOylation affects the eNOS coupling. In the study, we investigate the roles and possible action mechanisms of protein inhibitor of activated STAT 1 (PIAS1) in ED. Human umbilical vein endothelial cells (HUVECs) treated with palmitate acid (PA) in vitro and ApoE-/- mice fed with high-fat diet (HFD) in vivo were constructed as the ED models. Our in vivo data show that PIAS1 alleviates the dysfunction of vascular endothelium by increasing nitric oxide (NO) level, reducing malondialdehyde (MDA) level, and activating the phosphatidylinositol 3-kinase-protein kinase B-endothelial nitric oxide synthase (PI3K-AKT-eNOS) signaling in ApoE-/- mice. Our in vitro data also show that PIAS1 can SUMOylate eNOS under endogenous conditions; moreover, it antagonizes the eNOS uncoupling induced by PA. The findings demonstrate that PIAS1 alleviates the dysfunction of vascular endothelium by promoting the SUMOylation and inhibiting the uncoupling of eNOS, suggesting that PIAS1 would become an early predictor of atherosclerosis and a new potential target of the hyperlipidemia-related cardiovascular diseases.
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Affiliation(s)
- Li Wang
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Wenjing Zeng
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Chaowen Wang
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Yanli Lu
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Xiaowei Xiong
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Sheng Chen
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Qianqian Huang
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Feixing Yan
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Qiren Huang
- Provincial Key Laboratory of Basic Pharmacology, Nanchang University, Nanchang, Jiangxi, P.R. China
- Department of Pharmacology, School of Pharmacy, Nanchang University, Nanchang, Jiangxi, P.R. China
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4
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Kim MS, Baek JH, Lee J, Sivaraman A, Lee K, Chun KH. Deubiquitinase USP1 enhances CCAAT/enhancer-binding protein beta (C/EBPβ) stability and accelerates adipogenesis and lipid accumulation. Cell Death Dis 2023; 14:776. [PMID: 38012162 PMCID: PMC10681981 DOI: 10.1038/s41419-023-06317-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 10/31/2023] [Accepted: 11/15/2023] [Indexed: 11/29/2023]
Abstract
Dysregulation of the ubiquitin-proteasome system has been implicated in the pathogenesis of several metabolic disorders, including obesity, diabetes, and non-alcoholic fatty liver disease; however, the mechanisms controlling pathogenic metabolic disorders remain unclear. Transcription factor CCAAT/enhancer binding protein beta (C/EBPβ) regulates adipogenic genes. The study showed that the expression level of C/EBPβ is post-translationally regulated by the deubiquitinase ubiquitin-specific protease 1 (USP1) and that USP1 expression is remarkably upregulated during adipocyte differentiation and in the adipose tissue of mice fed a high-fat diet (HFD). We found that USP1 directly interacts with C/EBPβ. Knock-down of USP1 decreased C/EBPβ protein stability and increased its ubiquitination. Overexpression of USP1 regulates its protein stability and ubiquitination, whereas catalytic mutant of USP1 had no effect on them. It suggests that USP1 directly deubiquitinases C/EBPβ and increases the protein expression, leading to adipogenesis and lipid accumulation. Notably, the USP1-specific inhibitor ML323-originally developed to sensitize cancer cells to DNA-damaging agents-decreased adipocyte differentiation and lipid accumulation in 3T3-L1 cells without cytotoxicity. Oral gavage of ML323 was administered to HFD-fed mice, which showed weight loss and improvement in insulin and glucose sensitivity. Both fat mass and adipocyte size in white adipose tissues were significantly reduced by ML323 treatment, which also reduced the expression of genes involved in adipogenesis and inflammatory responses. ML323 also reduced lipid accumulation, hepatic triglycerides, free fatty acids, and macrophage infiltration in the livers of HFD-fed mice. Taken together, we suggest that USP1 plays an important role in adipogenesis by regulating C/EBPβ ubiquitination, and USP1-specific inhibitor ML323 is a potential treatment option and further study by ML323 is needed for clinical application for metabolic disorders.
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Affiliation(s)
- Myung Sup Kim
- Department of Biochemistry & Molecular Biology, Seoul, Republic of Korea
- Graduate School of Medical Science, Brain Korea 21 Project, Seoul, Republic of Korea
- Institute of Genetic Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jung-Hwan Baek
- Department of Biochemistry & Molecular Biology, Seoul, Republic of Korea
- Graduate School of Medical Science, Brain Korea 21 Project, Seoul, Republic of Korea
- Institute of Genetic Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - JinAh Lee
- Department of Biochemistry & Molecular Biology, Seoul, Republic of Korea
| | - Aneesh Sivaraman
- College of Pharmacy, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Kyeong Lee
- College of Pharmacy, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Kyung-Hee Chun
- Department of Biochemistry & Molecular Biology, Seoul, Republic of Korea.
- Graduate School of Medical Science, Brain Korea 21 Project, Seoul, Republic of Korea.
- Institute of Genetic Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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5
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Nakano T, Sasaki Y, Norikura T, Hosokawa Y, Kasano M, Matsui‐Yuasa I, Huang X, Kobayashi Y, Kojima‐Yuasa A. The suppression of the differentiation of adipocytes with Mallotus furetianus is regulated through the posttranslational modifications of C/EBPβ. Food Sci Nutr 2023; 11:6151-6163. [PMID: 37831750 PMCID: PMC10563708 DOI: 10.1002/fsn3.3551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 10/15/2023] Open
Abstract
Obesity is a major risk factor for various chronic diseases, especially lifestyle-related diseases. Therefore, finding a protective substance against obesity and elucidating its molecular mechanism is one of the most important problems for improving human health. In this study, we investigated the antiobesity effect of Mallotus furetianus extract (MFE). The aim of the study was to examine the in vivo and in vitro effects of MFE on lipid synthesis. We examined the effect using an in vivo experimental system with obesity model mice and an in vitro experimental system with 3T3-L1 preadipocytes. We found that the treatment of MFE significantly suppressed the increase in body weight and adipose tissue weight and morphological changes in the liver and adipose tissue of the obesity model mice. In the in vitro experimental system, we revealed that MFE treatment suppressed the expression of transcription factors such as C/EBPα, C/EBPβ, and PPARγ, which are involved in the early differentiation of 3T3-L1 preadipocytes. As a result, the ability to synthesize triacylglycerol was suppressed. An interesting finding in this study was the clarification that MFE decreases the expression of C/EBPβ through post-translation modifications (PTMs), followed by the transcriptional suppression of PPAR𝛾 and C/EBP𝛼.
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Affiliation(s)
- Touko Nakano
- Department of Food and Human Health SciencesGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
| | - Yutaro Sasaki
- Department of Food and Human Health SciencesGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
| | - Toshio Norikura
- Department of NutritionAomori University of Health and WelfareAomoriJapan
| | - Yusuke Hosokawa
- Department of Food and Human Health SciencesGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
| | - Mayu Kasano
- Department of Food and Human Health SciencesGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
| | - Isao Matsui‐Yuasa
- Department of Food and Human Health SciencesGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
- Department of NutritionGraduate School of Human Life and EcologyOsaka Metropolitan UniversityOsakaJapan
| | - Xuedan Huang
- Department of PharmacognosySchool of PharmacyKitasato UniversityTokyoJapan
| | | | - Akiko Kojima‐Yuasa
- Department of Food and Human Health SciencesGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
- Department of NutritionGraduate School of Human Life and EcologyOsaka Metropolitan UniversityOsakaJapan
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6
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Ran H, Li C, Zhang M, Zhong J, Wang H. Neglected PTM in Animal Adipogenesis: E3-mediated Ubiquitination. Gene 2023:147574. [PMID: 37336271 DOI: 10.1016/j.gene.2023.147574] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/11/2023] [Accepted: 06/14/2023] [Indexed: 06/21/2023]
Abstract
Ubiquitination is a widespread post-transcriptional modification (PTM) that occurs during protein degradation in eukaryotes and participates in almost all physiological and pathological processes, including animal adipogenesis. Ubiquitination is a cascade reaction regulated by the activating enzyme E1, conjugating enzyme E2, and ligase E3. Several recent studies have reported that E3 ligases play important regulatory roles in adipogenesis. However, as a key influencing factor for the recognition and connection between the substrate and ubiquitin during ubiquitination, its regulatory role in adipogenesis has not received adequate attention. In this review, we summarize the E3s' regulation and modification targets in animal adipogenesis, explain the regulatory mechanisms in lipogenic-related pathways, and further analyze the existing positive results to provide research directions of guiding significance for further studies on the regulatory mechanisms of E3s in animal adipogenesis.
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Affiliation(s)
- Hongbiao Ran
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu, Sichuan 610041, People's Republic of China
| | - Chunyan Li
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu, Sichuan 610041, People's Republic of China
| | - Ming Zhang
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu, Sichuan 610041, People's Republic of China
| | - Jincheng Zhong
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu, Sichuan 610041, People's Republic of China
| | - Hui Wang
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu, Sichuan 610041, People's Republic of China.
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7
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Mobeen A, Puniya BL, Ramachandran S. A computational approach to investigate constitutive activation of
NF‐κB. Proteins 2022; 90:1944-1964. [DOI: 10.1002/prot.26388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 05/12/2022] [Accepted: 05/23/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Ahmed Mobeen
- CSIR – Institute of Genomics & Integrative Biology, Sukhdev Vihar New Delhi India
- Academy of Scientific & Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
| | - Bhanwar Lal Puniya
- Department of Biochemistry University of Nebraska‐Lincoln Lincoln Nebraska USA
| | - Srinivasan Ramachandran
- CSIR – Institute of Genomics & Integrative Biology, Sukhdev Vihar New Delhi India
- Academy of Scientific & Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
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8
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Dou X, Zhou WY, Ding M, Ma YJ, Yang QQ, Qian SW, Tang Y, Tang QQ, Liu Y. The protease SENP2 controls hepatic gluconeogenesis by regulating the SUMOylation of the fuel sensor AMPKα. J Biol Chem 2021; 298:101544. [PMID: 34971706 PMCID: PMC8888337 DOI: 10.1016/j.jbc.2021.101544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/18/2021] [Accepted: 12/21/2021] [Indexed: 11/18/2022] Open
Abstract
Uncontrolled gluconeogenesis results in elevated hepatic glucose production in type 2 diabetes. The SUMO-specific protease 2 (SENP2) is known to catalyze deSUMOylation of target proteins, with broad effects on cell growth, signal transduction, and developmental processes. However, the role of SENP2 in hepatic gluconeogenesis and the occurrence of type 2 diabetes remains unknown. Herein, we established SENP2 hepatic knockout mice and found that SENP2 deficiency could protect against high fat diet-induced hyperglycemia. Pyruvate or glucagon-induced elevation in blood glucose was attenuated by disruption of SENP2 expression, whereas overexpression of SENP2 in the liver facilitated high fat diet-induced hyperglycemia. Using an in vitro assay, we showed that SENP2 regulated hepatic glucose production. Mechanistically, the effects of SENP2 on gluconeogenesis were found to be mediated by the cellular fuel sensor kinase AMPKα, which is a negative regulator of gluconeogenesis. SENP2 interacted with and deSUMOylated AMPKα, thereby promoting its ubiquitination and reducing its protein stability. Inhibition of AMPKα kinase activity dramatically reversed impaired hepatic gluconeogenesis and reduced blood glucose levels in SENP2-deficient mice. Our study highlights the novel role of hepatic SENP2 in regulating gluconeogenesis and furthers our understanding of the pathogenesis of type 2 diabetes.
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Affiliation(s)
- Xin Dou
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Wei-Yu Zhou
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Meng Ding
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Yin-Jun Ma
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Qi-Qi Yang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Shu-Wen Qian
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Yan Tang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Qi-Qun Tang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China.
| | - Yang Liu
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, and Department of Clinical Laboratory, Shanghai Pudong Hospital, Fudan University, Shanghai, China.
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9
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Hou Z, Chen J, Yang H, Hu X, Yang F. PIAS1 alleviates diabetic peripheral neuropathy through SUMOlation of PPAR-γ and miR-124-induced downregulation of EZH2/STAT3. Cell Death Discov 2021; 7:372. [PMID: 34857740 PMCID: PMC8639830 DOI: 10.1038/s41420-021-00765-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 11/08/2021] [Accepted: 11/17/2021] [Indexed: 12/20/2022] Open
Abstract
Diabetic peripheral neuropathy (DPN) is a frequently occurring chronic complication of diabetes. In this study, we aim to explore the regulatory mechanism of protein inhibitor of activated STAT1 (PIAS1) in DPN in terms of autophagy and apoptosis of Schwann cells. The SUMOlation of PPAR-γ by PIAS1 was examined, and ChIP was performed to verify the binding of PPAR-γ to miR-124 promoter region. Dual-luciferase gene reporter assay was used to validate the binding affinity between miR-124 and EZH2/STAT3. Following loss‐ and gain‐of-function experiments, in vitro assays in high glucose-treated Schwann cells (SC4) and in vivo assays in db/db and ob/ob mice were performed to detect the effects of PIAS1 on autophagy and apoptosis of Schwann cells as well as symptoms of DPN by regulating the PPAR-γ-miR-124-EZH2/STAT3. The expression of PIAS1, PPAR-γ, and miR-124 was downregulated in the sciatic nerve tissue of diabetic mice. PIAS1 enhanced the expression of PPAR-γ through direct binding and SUMOlation of PPAR-γ. PPAR-γ enhanced the expression of miR-124 by enhancing the promoter activity of miR-124. Furthermore, miR-124 targeted and inversely modulated EZH2 and STAT3, promoting the autophagy of Schwann cells and inhibiting their apoptosis. In vivo experiments further substantiated that PIAS1 could promote the autophagy and inhibit the apoptosis of Schwann cells through the PPAR-γ-miR-124-EZH2/STAT3 axis. In conclusion, PIAS1 promoted SUMOlation of PPAR-γ to stabilize PPAR-γ expression, which upregulated miR-124 to inactivate EZH2/STAT3, thereby inhibiting apoptosis and promoting autophagy of Schwann cells to suppress the development of DPN.
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Affiliation(s)
- Zixin Hou
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, 421001, P.R. China
| | - Ji Chen
- Department of Endocrinology, The First Affiliated Hospital of University of South China, Hengyang, 421001, P.R. China
| | - Huan Yang
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, 421001, P.R. China
| | - Xiaoling Hu
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, 421001, P.R. China
| | - Fengrui Yang
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, 421001, P.R. China. .,Department of Anesthesiology, Affiliated Huaihua Hospital, University of South China, Huaihua, 418000, P.R. China.
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10
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Zhang Y, Long X, Ruan X, Wei Q, Zhang L, Wo L, Huang D, Lin L, Wang D, Xia L, Zhao Q, Liu J, Zhao Q, He M. SIRT2-mediated deacetylation and deubiquitination of C/EBPβ prevents ethanol-induced liver injury. Cell Discov 2021; 7:93. [PMID: 34642310 PMCID: PMC8511299 DOI: 10.1038/s41421-021-00326-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 08/24/2021] [Indexed: 02/06/2023] Open
Abstract
Protein acetylation has emerged to play pivotal roles in alcoholic liver disease (ALD). Sirutin 2 (SIRT2) is a nicotinamide adenine dinucleotide (NAD+)-dependent deacetylase involved in the regulation of aging, metabolism, and stress. However, the role of SIRT2 in ALD remains unclear. Here, we report that the SIRT2-mediated deacetylation-deubiquitination switch of CCAAT/enhancer-binding protein beta (C/EBPβ) prevents ALD. Our results showed that hepatic SIRT2 protein expression was negatively correlated with the severity of alcoholic liver injury in ALD patients. Liver-specific SIRT2 deficiency sensitized mice to ALD, whereas transgenic SIRT2 overexpression in hepatocytes significantly prevented ethanol-induced liver injury via normalization of hepatic steatosis, lipid peroxidation, and hepatocyte apoptosis. Mechanistically, we identified C/EBPβ as a critical substrate of SIRT2 implicated in ALD. SIRT2-mediated deacetylation at lysines 102 and 211 decreased C/EBPβ ubiquitination, resulting in enhanced protein stability and subsequently increased transcription of C/EBPβ-target gene LCN2. Importantly, hepatic deacetylated C/EBPβ and LCN2 compensation reversed SIRT2 deletion-induced ALD aggravation in mice. Furthermore, C/EBPβ protein expression was positively correlated with SIRT2 and LCN2 expression in the livers of ALD patients and was inversely correlated with ALD development. Therefore, activating SIRT2-C/EBPβ-LCN2 signaling pathway is a potential therapy for ALD.
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Affiliation(s)
- Yingting Zhang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xidai Long
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | - Xin Ruan
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Wei
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lin Zhang
- Department of Biochemistry and Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lulu Wo
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dongdong Huang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Longshuai Lin
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Difei Wang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Xia
- Department of Core Facility of Basic Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qinghua Zhao
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Junling Liu
- Department of Biochemistry and Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Zhao
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Ming He
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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11
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Zhang Z, Wen H, Peng B, Weng J, Zeng F. CDKN2A deregulation in fatty liver disease and its accelerative role in the process of lipogenesis. FASEB J 2021; 35:e21230. [PMID: 33769609 DOI: 10.1096/fj.202000683r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 10/26/2020] [Accepted: 11/12/2020] [Indexed: 01/07/2023]
Abstract
Previous literature has indicated that cyclin-dependent kinase inhibitor 2 A (CDKN2A) is upregulated, while the Protein Inhibitor of Activated STAT1 (PIAS1) is downregulated in the liver tissues of obese mice. The current study aimed to investigate the relationship between CDKN2A and PIAS1 in the lipogenesis of fatty liver disease. In the C57BL/6J db/db mouse model and hepatocyte model of fatty liver, the expression pattern of CDKN2A, PIAS1, Protein arginine methyltransferase 1 (PRMT1) and CASP8 and FADD-like apoptosis regulator (CFLAR) was characterized by RNA quantitative and Western blot analysis. The lipogenesis-related genes (Srebp1c and Fas) in the liver tissues and cells were employed in the assessment of lipogenesis in response to gain- or loss-of-function of CDKN2A, PIAS1, PRMT1, and CFLAR, while triglyceride and fat content were evaluated in relation to fat accumulation. Western blot analysis was conducted to determine c-Jun amino-terminal kinase (JNK) phosphorylation, while the ubiquitination of CFLAR and SUMOylation of PIAS1 was examined by immunoprecipitation. PIAS1 and CFLAR were downregulated, while CDKN2A, PRMT1, and phosphorylation of JNK was elevated in the tissues and cells of the fatty liver models. Our results suggested that CDKN2A enhanced the SUMOylation of PIAS1 to reduce the expression of PIAS1. PRMT1 downregulated CFLAR by triggering its ubiquitination, while CFLAR repressed phosphorylation of JNK. The in vitro and in vivo results indicated that CDKN2A silencing prevented lipogenesis and fat accumulation by impairing the PRMT1-dependent ubiquitination of CFLAR and blocking the phosphorylation of JNK. Taken together, the central observations of our study demonstrate that targeting CDKN2A contributes to the suppression of lipogenesis and fat accumulation in fatty liver disease. The findings of our study highlight the potential of CDKN2A as a promising target against fatty liver.
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Affiliation(s)
- Zhi Zhang
- Department of Hepatobiliary Surgery, the Fifth Affiliated Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Huiqing Wen
- Department of Hepatobiliary Surgery, the Fifth Affiliated Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Bangjian Peng
- Department of Hepatobiliary Surgery, the Fifth Affiliated Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Jun Weng
- Department of Hepatobiliary Surgery II, Zhujiang Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Fanhong Zeng
- Department of Hepatobiliary Surgery II, Zhujiang Hospital, Southern Medical University, Guangzhou, P. R. China
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12
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Yu C, Wen Q, Ren Q, Du Y, Xie X. Polychlorinated biphenyl congener 180 (PCB 180) regulates mitotic clonal expansion and enhances adipogenesis through modulation of C/EBPβ SUMOylation in preadipocytes. Food Chem Toxicol 2021; 152:112205. [PMID: 33864839 DOI: 10.1016/j.fct.2021.112205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 04/02/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
PCB 180 is a typical non-dioxin-like polychlorinated biphenyl (NDL-PCB). It is one of the most prevalent PCB-congeners found in human adipose tissue. However, the role of PCB 180 in obesity remains poorly understood. The aim of this study was to explore the adipogenic effect and mechanism of PCB 180. Significant enhancement in adipogenesis was observed when differentiating murine 3T3-L1 preadipocytes or human preadipocytes-visceral (HPA-v) that were exposed to PCB 180. Furthermore, exposure to PCB 180 during the first two days was critical to the adipogenic effect. According to results from sequential cell cycle analyses, cell counting, BrdU incorporation, and cyclin D1, cyclin B1, and p27 protein quantification, PCB 180 was found to enhance mitotic clonal expansion (MCE) during early adipogenic differentiation. Molecular mechanistic investigation revealed that PCB 180 promoted accumulation of the C/EBPβ protein, a key regulator that controls MCE. Finally, it was found that PCB 180 mitigated degradation of the C/EBPβ protein by repressing the SUMOylation and subsequent ubiquitination of C/EBPβ by the upregulation of SENP2. In summary, it was shown for the first time that PCB 180 facilitated adipogenesis by alleviating C/EBPβ protein SUMOylation. This result provides novel evidence regarding obesogenic effect of PCB 180.
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Affiliation(s)
- Caixia Yu
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Chemical Sciences and College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing Wen
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Chemical Sciences and College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qidong Ren
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Chemical Sciences and College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuguo Du
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Chemical Sciences and College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, Jiangxi, China.
| | - Xinni Xie
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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13
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He K, Zhang J, Liu J, Cui Y, Liu LG, Ye S, Ban Q, Pan R, Liu D. Functional genomics study of protein inhibitor of activated STAT1 in mouse hippocampal neuronal cells revealed by RNA sequencing. Aging (Albany NY) 2021; 13:9011-9027. [PMID: 33759814 PMCID: PMC8034905 DOI: 10.18632/aging.202749] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 02/01/2021] [Indexed: 12/13/2022]
Abstract
Protein inhibitor of activated STAT1 (PIAS1), a small ubiquitin-like modifier (SUMO) E3 ligase, was considered to be an inhibitor of STAT1 by inhibiting the DNA-binding activity of STAT1 and blocking STAT1-mediated gene transcription in response to cytokine stimulation. PIAS1 has been determined to be involved in modulating several biological processes such as cell proliferation, DNA damage responses, and inflammatory responses, both in vivo and in vitro. However, the role played by PIAS1 in regulating neurodegenerative diseases, including Alzheimer’s disease (AD), has not been determined. In our study, significantly different expression levels of PIAS1 between normal controls and AD patients were detected in four regions of the human brain. Based on a functional analysis of Pias1 in undifferentiated mouse hippocampal neuronal HT-22 cells, we observed that the expression levels of several AD marker genes could be inhibited by Pias1 overexpression. Moreover, the proliferation ability of HT-22 cells could be promoted by the overexpression of Pias1. Furthermore, we performed RNA sequencing (RNA-seq) to evaluate and quantify the gene expression profiles in response to Pias1 overexpression in HT-22 cells. As a result, 285 significantly dysregulated genes, including 79 upregulated genes and 206 downregulated genes, were identified by the comparison of Pias1/+ cells with WT cells. Among these genes, five overlapping genes, including early growth response 1 (Egr1), early growth response 2 (Egr2), early growth response 3 (Egr3), FBJ osteosarcoma oncogene (Fos) and fos-like antigen 1 (Fosl1), were identified by comparison of the transcription factor binding site (TFBS) prediction results for STAT1, whose expression was evaluated by qPCR. Three cell cycle inhibitors, p53, p18 and p21, were significantly downregulated with the overexpression of Pias1. Analysis of functional enrichment and expression levels showed that basic region leucine zipper domain-containing transcription factors including zinc finger C2H2 (zf-C2H2), homeobox and basic/helix-loop-helix (bHLH) in several signaling pathways were significantly involved in PIAS1 regulation in HT-22 cells. A reconstructed regulatory network under PIAS1 overexpression demonstrated that there were 43 related proteins, notably Nr3c2, that directly interacted with PIAS1.
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Affiliation(s)
- Kan He
- Center for Stem Cell and Translational Medicine, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China.,Department of Biostatistics, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Jian Zhang
- Center for Stem Cell and Translational Medicine, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Justin Liu
- Department of Statistics, University of California, Riverside, CA 92521, USA
| | - Yandi Cui
- Center for Stem Cell and Translational Medicine, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | | | - Shoudong Ye
- Center for Stem Cell and Translational Medicine, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China.,Department of Biostatistics, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Qian Ban
- Center for Stem Cell and Translational Medicine, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China.,Department of Biostatistics, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Ruolan Pan
- Center for Stem Cell and Translational Medicine, School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Dahai Liu
- Foshan Stomatology Hospital, School of Medicine, Foshan University, Foshan 528000, Guangdong, China
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14
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Wang F, Li X, Li Z, Wang S, Fan J. Functions of Circular RNAs in Regulating Adipogenesis of Mesenchymal Stem Cells. Stem Cells Int 2020; 2020:3763069. [PMID: 32802080 PMCID: PMC7416283 DOI: 10.1155/2020/3763069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 12/17/2022] Open
Abstract
The mesenchymal stem cells (MSCs) are known as highly plastic stem cells and can differentiate into specialized tissues such as adipose tissue, osseous tissue, muscle tissue, and nervous tissue. The differentiation of mesenchymal stem cells is very important in regenerative medicine. Their differentiation process is regulated by signaling pathways of epigenetic, transcriptional, and posttranscriptional levels. Circular RNA (circRNA), a class of noncoding RNAs generated from protein-coding genes, plays a pivotal regulatory role in many biological processes. Accumulated studies have demonstrated that several circRNAs participate in the cell differentiation process of mesenchymal stem cells in vitro and in vivo. In the current review, characteristics and functions of circRNAs in stem cell differentiation will be discussed. The mechanism and key role of circRNAs in regulating mesenchymal stem cell differentiation, especially adipogenesis, will be reviewed and discussed. Understanding the roles of these circRNAs will present us with a more comprehensive signal path network of modulating stem cell differentiation and help us discover potential biomarkers and therapeutic targets in clinic.
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Affiliation(s)
- Fanglin Wang
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Xiang Li
- Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, And Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, Liaoning 110122, China
| | - Zhiyuan Li
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Shoushuai Wang
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Jun Fan
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
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15
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Jiang H, Horiuchi Y, Hironao KY, Kitakaze T, Yamashita Y, Ashida H. Prevention effect of quercetin and its glycosides on obesity and hyperglycemia through activating AMPKα in high-fat diet-fed ICR mice. J Clin Biochem Nutr 2020; 67:74-83. [PMID: 32801472 PMCID: PMC7417802 DOI: 10.3164/jcbn.20-47] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 02/06/2023] Open
Abstract
Quercetin and its glycosides possess various health beneficial functions, but comparative study of them on energy metabolism in different tissues are not well studied. In this study, we investigated AMP-activated protein kinase regulated glucose metabolism in the skeletal muscle and lipid metabolism in the white adipose tissue and liver to compare the effectiveness of quercetin and its glycosides, namely isoquercitrin, rutin, and enzymatically modified isoquercitrin, in male ICR mice. The mice were fed a standard or high-fat diet supplemented with 0.1% quercetin and its glycosides for 13 weeks. Quercetin glycosides, but not quercetin, decreased body weight gain and fat accumulation in the mesenteric adipose tissue in high-fat groups. All compounds decreased high-fat diet-increased plasma glucose and insulin levels. Moreover, all compounds significantly increased AMP-activated protein kinase phosphorylation in either standard or high-fat diet-fed mice in all tissues tested. As its downstream events, all compounds induced glucose transporter 4 translocation in the muscle. In the white adipose tissue and liver, all compounds increased lipogenesis while decreased lipolysis. Moreover, all compounds increased browning markers and decreased differentiation markers in adipose tissue. Therefore, quercetin and its glycosides are promising food components for prevention of adiposity and hyperglycemia through modulating AMP-activated protein kinase-driven pathways.
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Affiliation(s)
- Hao Jiang
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Yuko Horiuchi
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Ken-Yu Hironao
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Tomoya Kitakaze
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Yoko Yamashita
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Hitoshi Ashida
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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16
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Zhang F, Liu B, Deng Q, Sheng D, Xu J, He X, Zhang L, Liu S. UCP1 regulates ALDH-positive breast cancer stem cells through releasing the suppression of Snail on FBP1. Cell Biol Toxicol 2020; 37:277-291. [PMID: 32472219 DOI: 10.1007/s10565-020-09533-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/18/2020] [Indexed: 12/22/2022]
Abstract
Uncoupling protein 1 (UCP1) has been implicated in ameliorating metabolic related disorders, of which most symptoms are risk factors for breast cancer. Here, we found that UCP1 was obviously downregulated in basal-like breast cancer (BLBC) and was positively correlated with improved survival. However, the underlying regulatory mechanisms remain largely unknown. Our studies showed that UCP1 inhibited tumor progression via suppressing aldehyde dehydrogenase (ALDH)-positive breast cancer stem cell (BCSC) population in BLBC. Furthermore, we found that UCP1 induced the upregulation of fructose bisphosphatase 1 (FBP1) which was previously blocked by Snail overexpression, and UCP1 decreased ALDH-positive BCSCs via FBP1-dependent metabolic rewiring, which could be reversed by Snail overexpression. In addition, breast cancer cells co-cultured with UCP1-deficient adipocytes had increased proportion of ALDH-positive BCSCs, indicating a potential protection role of UCP1 in tumor microenvironment. These results suggested that UCP1 suppressed BCSCs through inhibiting Snail-mediated repression of FBP1, and that upregulation of UCP1 might be a previously undescribed therapeutic strategy for combating breast cancer. Graphical abstract.
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Affiliation(s)
- Fuchuang Zhang
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China
| | - Bingjie Liu
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China
| | - Qiaodan Deng
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China
| | - Dandan Sheng
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China
| | - Jiahui Xu
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China
| | - Xueyan He
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China
| | - Lixing Zhang
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China.
| | - Suling Liu
- Key Laboratory of Breast Cancer in Shanghai, The Shanghai Key Laboratory of Medical Epigenetics, Key Laboratory of Medical Epigenetics and Metabolism, Shanghai Medical College, Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences, Cancer Institutes, Fudan University, Shanghai, 200032, China.
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17
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Sulforaphene Suppresses Adipocyte Differentiation via Induction of Post-Translational Degradation of CCAAT/Enhancer Binding Protein Beta (C/EBPβ). Nutrients 2020; 12:nu12030758. [PMID: 32183002 PMCID: PMC7146557 DOI: 10.3390/nu12030758] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/07/2020] [Accepted: 03/10/2020] [Indexed: 01/13/2023] Open
Abstract
Adipocyte differentiation (adipogenesis) is a crucial process that determines the total number and size of mature adipocytes that will develop. In this study, the anti-adipogenic effect of sulforaphene (SFEN), a dietary isothiocyanate (ITC) derived from radish, is investigated both in 3T3-L1 pre-adipocytes and in human adipose tissue-derived stem cells. The results revealed that SFEN significantly inhibit adipogenic cocktail-induced adipocyte differentiation and lipid accumulation at the early stage of adipogenesis. Additionally, the effects are more potent compared to those of other ITCs derived from various cruciferous vegetables. As a related molecular mechanism of action, SFEN promotes the post-translational degradation of CCAAT/enhancer-binding protein (C/EBP) β by decreasing the stability of C/EBPβ, which is responsible for decreasing the expression of master regulatory proteins such as peroxisome proliferator-activated receptor γ and C/EBPα. Collectively, these results suggest that the intake of SFEN-enriched natural materials could be helpful as a strategy for preventing obesity.
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18
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Watanabe Y, Watanabe K, Fujioka D, Nakamura K, Nakamura T, Uematsu M, Bachschmid MM, Matsui R, Kugiyama K. Protein S-glutathionylation stimulate adipogenesis by stabilizing C/EBPβ in 3T3L1 cells. FASEB J 2020; 34:5827-5837. [PMID: 32141127 DOI: 10.1096/fj.201902575r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 02/07/2020] [Accepted: 02/20/2020] [Indexed: 02/02/2023]
Abstract
Reactive oxygen species (ROS) increase during adipogenesis and in obesity. Oxidants react with cysteine residues of proteins to form glutathione (GSH) adducts, S-glutathionylation, that are selectively removed by glutaredoxin-1 (Glrx). We have previously reported that Glrx knockout mice had increased protein S-glutathionylation and developed obesity by an unknown mechanism. In this study, we demonstrated that 3T3L1 adipocytes differentiation increased ROS and protein S-glutathionylation. Glrx ablation elevated protein S-glutathionylation and lipid content in 3T3L1 cells. Glrx replenishment decreased the lipid content of Glrx KO 3T3L1 cells. Glrx KO also increased protein expression and protein S-glutathionylation of the adipogenic transcription factor CCAAT enhancer-binding protein (C/EBP) β. Protein S-glutathionylation decreased the interaction of C/EBPβ and protein inhibitor of activated STAT (PIAS) 1, a small ubiquitin-related modifier E3 ligase that facilitates C/EBPβ degradation. Experiments with truncated mutant C/EBPβ demonstrated that PIAS1 interacted with the liver-enriched inhibitory protein (LIP) region of C/EBPβ. Furthermore, mass spectrometry analysis identified protein S-glutathionylation of Cys201 and Cys296 in the LIP region of C/EBPβ. The C201S, C296S double-mutant C/EBPβ prevented protein S-glutathionylation and preserved the interaction with PIAS1. In summary, Glrx ablation stimulated 3T3L1 cell differentiation and adipogenesis via increased protein S-glutathionylation of C/EBPβ, stabilizing and increasing C/EBPβ protein levels.
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Affiliation(s)
- Yosuke Watanabe
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Kazuhiro Watanabe
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Daisuke Fujioka
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Kazuto Nakamura
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Takamitsu Nakamura
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Manabu Uematsu
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
| | - Markus M Bachschmid
- Department of Medicine, Vascular Biology Section, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Reiko Matsui
- Department of Medicine, Vascular Biology Section, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Kiyotaka Kugiyama
- Department of Internal Medicine II, University of Yamanashi, Chuo, Japan
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19
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Spike AJ, Rosen JM. C/EBPß Isoform Specific Gene Regulation: It's a Lot more Complicated than you Think! J Mammary Gland Biol Neoplasia 2020; 25:1-12. [PMID: 32078094 PMCID: PMC7694698 DOI: 10.1007/s10911-020-09444-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/06/2020] [Indexed: 11/29/2022] Open
Abstract
It has been almost 30 years since C/EBPß was discovered. Seminal studies have shown that C/EBPß is a master regulator of mammary gland development and has been shown to control and influence proliferation and differentiation through varying mechanisms. The single-exon C/EBPß mRNA yields at least three different protein isoforms which have diverse, specific, context-dependent, and often non-overlapping roles throughout development and breast cancer progression. These roles are dictated by a number of complex factors including: expression levels of other C/EBP family members and their stoichiometry relative to the isoform in question, binding site affinity, post-translational modifications, co-factor expression, and even hormone levels and lactogenic status. Here we summarize the historical work up to the latest findings in the field on C/EBPß in the mammary gland and in breast cancer. With the current emphasis on improving immunotherapy in breast cancer the role of specific C/EBPß isoforms in regulating specific chemokine and cytokine expression and the immune microenvironment will be of increasing interest.
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Affiliation(s)
- Aaron J Spike
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Jeffrey M Rosen
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.
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Network of Interactions between ZIKA Virus Non-Structural Proteins and Human Host Proteins. Cells 2020; 9:cells9010153. [PMID: 31936331 PMCID: PMC7016862 DOI: 10.3390/cells9010153] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/20/2019] [Accepted: 01/01/2020] [Indexed: 12/16/2022] Open
Abstract
The Zika virus (ZIKV) is a mosquito-borne Flavivirus and can be transmitted through an infected mosquito bite or through human-to-human interaction by sexual activity, blood transfusion, breastfeeding, or perinatal exposure. After the 2015-2016 outbreak in Brazil, a strong link between ZIKV infection and microcephaly emerged. ZIKV specifically targets human neural progenitor cells, suggesting that proteins encoded by ZIKV bind and inactivate host cell proteins, leading to microcephaly. Here, we present a systematic annotation of interactions between human proteins and the seven non-structural ZIKV proteins corresponding to a Brazilian isolate. The interaction network was generated by combining tandem-affinity purification followed by mass spectrometry with yeast two-hybrid screens. We identified 150 human proteins, involved in distinct biological processes, as interactors to ZIKV non-structural proteins. Our interacting network is composed of proteins that have been previously associated with microcephaly in human genetic disorders and/or animal models. Further, we show that the protein inhibitor of activated STAT1 (PIAS1) interacts with NS5 and modulates its stability. This study builds on previously published interacting networks of ZIKV and genes related to autosomal recessive primary microcephaly to generate a catalog of human cellular targets of ZIKV proteins implicated in processes related to microcephaly in humans. Collectively, these data can be used as a resource for future characterization of ZIKV infection biology and help create a basis for the discovery of drugs that may disrupt the interaction and reduce the health damage to the fetus.
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21
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Dumontet T, Sahut‐Barnola I, Dufour D, Lefrançois‐Martinez A, Berthon A, Montanier N, Ragazzon B, Djari C, Pointud J, Roucher‐Boulez F, Batisse‐Lignier M, Tauveron I, Bertherat J, Val P, Martinez A. Hormonal and spatial control of SUMOylation in the human and mouse adrenal cortex. FASEB J 2019; 33:10218-10230. [DOI: 10.1096/fj.201900557r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Typhanie Dumontet
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Isabelle Sahut‐Barnola
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Damien Dufour
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Anne‐Marie Lefrançois‐Martinez
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Annabel Berthon
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Nathanaëlle Montanier
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
- Service d'EndocrinologieCentre Hospitalier Régional (CHR)Hôpital de la Source Orléans France
| | - Bruno Ragazzon
- Institut CochinCentre National de la Recherche Scientifique (CNRS)INSERMUniversité Paris Descartes Paris France
| | - Cyril Djari
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Jean‐Christophe Pointud
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Florence Roucher‐Boulez
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
- Endocrinologie Moléculaire et Maladies RaresCHUUniversité Claude Bernard Lyon 1 Bron France
| | - Marie Batisse‐Lignier
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
- Service d'EndocrinologieFaculté de MédecineCentre Hospitalier Universitaire (CHU)Université Clermont‐Auvergne Clermont‐Ferrand France
| | - Igor Tauveron
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
- Service d'EndocrinologieFaculté de MédecineCentre Hospitalier Universitaire (CHU)Université Clermont‐Auvergne Clermont‐Ferrand France
| | - Jérôme Bertherat
- Institut CochinCentre National de la Recherche Scientifique (CNRS)INSERMUniversité Paris Descartes Paris France
- Centre Maladies Rares de la SurrénaleService d'EndocrinologieHôpital CochinAssistance Publique Hôpitaux de Paris Paris France
| | - Pierre Val
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
| | - Antoine Martinez
- Génétique Reproduction and Dévelopement (GReD)Centre National de la Recherche Scientifique (CNRS)INSERMUniversité Clermont‐Auvergne Clermont‐Ferrand France
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22
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Kouchaki E, Nikoueinejad H, Akbari H, Azimi S, Behnam M. The investigation of relevancy between PIAS1 and PIAS2 gene expression and disease severity of multiple sclerosis. J Immunoassay Immunochem 2019; 40:396-406. [PMID: 31084243 DOI: 10.1080/15321819.2019.1613244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Introduction: PIAS1 and PIAS2 (protein inhibitor of activated STAT 1,2) play key roles in the pathogenesis of autoimmune and inflammatory diseases. This study aims to evaluate the gene expression of these factors in multiple sclerosis (MS) patients compared to healthy individuals and correlate them with the severity of MS. Materials and methods: Sixty participants, including 30 patients with MS and 30 healthy controls were studied. The expression of PIAS1 and PIAS2 genes in peripheral blood samples of all participants was measured by real-time PCR. The severity of MS was evaluated using the Expanded Disability Status Scale (EDSS). Finally, we evaluated the correlation between the expression of PIAS1 and PIAS2 genes with disease severity. Results: The expression of PIAS1 gene was increased in patients with MS compared to healthy subjects (P value<.001). Also, there was a significant correlation between the expression of PIAS1 and PIAS2 genes with disease severity according to EDSS. Conclusion: Our study suggests the expression of PIAS1 and PIAS2 genes as a prognostic and diagnostic marker in MS disease.
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Affiliation(s)
- Ebrahim Kouchaki
- a Physiology Research Center , Kashan University of Medical Sciences , Kashan , Iran.,b Department of Neurology , Kashan University of Medical Sciences , Kashan , Iran
| | - Hassan Nikoueinejad
- c Nephrology and Urology Research Center , Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Hossein Akbari
- d Trauma Research Center , Kashan University of Medical Sciences , Kashan , Iran
| | - Shirin Azimi
- e Student Research Committee , Kashan University of Medical Sciences , Kashan , Iran
| | - Mohammad Behnam
- f Research Center for Biochemistry and Nutrition in Metabolic Diseases , Kashan University of Medical Sciences , Kashan , Iran
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23
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Mitani T, Nagano T, Harada K, Yamashita Y, Ashida H. Caffeine-Stimulated Intestinal Epithelial Cells Suppress Lipid Accumulation in Adipocytes. J Nutr Sci Vitaminol (Tokyo) 2018; 63:331-338. [PMID: 29225318 DOI: 10.3177/jnsv.63.331] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Caffeine is a methylxanthine derived from plant foods such as coffee beans and tea leaves, and has multiple biological activities against physiological response and several diseases. Although there are some reports about the direct effect of caffeine against anti-lipid accumulation in vitro, the effect of caffeine on lipid accumulation in adipocytes through stimulating intestinal epithelial cells is unknown. Since direct treatment with caffeine to 3T3-L1 cells did not affect lipid accumulation, we determined whether caffeine-stimulated intestinal epithelial Caco-2 cells influence the lipid accumulation in 3T3-L1 adipocytes. Caco-2 cells were cultured on a transwell insert with or without caffeine for 24 h. Subsequently, the basolateral component of the Caco-2 cell culture on the transwell was collected and termed caffeine-conditioning medium (CCM). When 3T3-L1 adipocytes were incubated with CCM, CCM decreased lipid accumulation and suppressed gene expression of proliferator activated receptor (PPAR) γ and CCAAT/enhancer binding protein (C/EBP) α in 3T3-L1 adipocytes. Furthermore, CCM decreased the expression of C/EBPβ and C/EBPδ at the protein level, but not at the mRNA level. We observed that a proteasome inhibitor, MG132, inhibited CCM-caused down-expression of C/EBPβ and C/EBPδ proteins, and that CCM promoted the ubiquitination level of C/EBPβ and C/EBPδ proteins. Protein microarray analysis showed caffeine suppresses the secretion of inflammatory cytokines, interleukin-8 and plasminogen activator inhibitor-1 from Caco-2 cells. These results suggest that caffeine indirectly suppresses lipid accumulation in 3T3-L1 adipocytes through decreasing secretion of inflammatory cytokines from Caco-2 cells.
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Affiliation(s)
- Takakazu Mitani
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University.,Department of Interdisciplinary Genome Sciences and Cell Metabolism, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University
| | - Tomoya Nagano
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University
| | - Kiyonari Harada
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University
| | - Yoko Yamashita
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University
| | - Hitoshi Ashida
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University
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24
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Zhang K, Lv DW, Li R. B Cell Receptor Activation and Chemical Induction Trigger Caspase-Mediated Cleavage of PIAS1 to Facilitate Epstein-Barr Virus Reactivation. Cell Rep 2018; 21:3445-3457. [PMID: 29262325 DOI: 10.1016/j.celrep.2017.11.071] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/21/2017] [Accepted: 11/17/2017] [Indexed: 12/16/2022] Open
Abstract
Epstein-Barr virus (EBV) in tumor cells is predominately in the latent phase, but the virus can undergo lytic reactivation in response to various stimuli. However, the cellular factors that control latency and lytic replication are poorly defined. In this study, we demonstrated that a cellular factor, PIAS1, restricts EBV lytic replication. PIAS1 depletion significantly facilitated EBV reactivation, while PIAS1 reconstitution had the opposite effect. Remarkably, we found that various lytic triggers promote caspase-dependent cleavage of PIAS1 to antagonize PIAS1-mediated restriction and that caspase inhibition suppresses EBV replication through blocking PIAS1 cleavage. We further demonstrated that a cleavage-resistant PIAS1 mutant suppresses EBV replication upon B cell receptor activation. Mechanistically, we demonstrated that PIAS1 acts as an inhibitor for transcription factors involved in lytic gene expression. Collectively, these results establish PIAS1 as a key regulator of EBV lytic replication and uncover a mechanism by which EBV exploits apoptotic caspases to antagonize PIAS1-mediated restriction.
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Affiliation(s)
- Kun Zhang
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Dong-Wen Lv
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Renfeng Li
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, VA 23298, USA; Department of Microbiology and Immunology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
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25
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Theobromine suppresses adipogenesis through enhancement of CCAAT-enhancer-binding protein β degradation by adenosine receptor A1. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:2438-2448. [DOI: 10.1016/j.bbamcr.2017.09.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/11/2017] [Accepted: 09/26/2017] [Indexed: 12/27/2022]
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26
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Norouzi S, Adulcikas J, Sohal SS, Myers S. Zinc transporters and insulin resistance: therapeutic implications for type 2 diabetes and metabolic disease. J Biomed Sci 2017; 24:87. [PMID: 29157234 PMCID: PMC5694903 DOI: 10.1186/s12929-017-0394-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/14/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Zinc is a metal ion that is essential for growth and development, immunity, and metabolism, and therefore vital for life. Recent studies have highlighted zinc's dynamic role as an insulin mimetic and a cellular second messenger that controls many processes associated with insulin signaling and other downstream pathways that are amendable to glycemic control. MAIN BODY Mechanisms that contribute to the decompartmentalization of zinc and dysfunctional zinc transporter mechanisms, including zinc signaling are associated with metabolic disease, including type 2 diabetes. The actions of the proteins involved in the uptake, storage, compartmentalization and distribution of zinc in cells is under intense investigation. Of these, emerging research has highlighted a role for several zinc transporters in the initiation of zinc signaling events in cells that lead to metabolic processes associated with maintaining insulin sensitivity and thus glycemic homeostasis. CONCLUSION This raises the possibility that zinc transporters could provide novel utility to be targeted experimentally and in a clinical setting to treat patients with insulin resistance and thus introduce a new class of drug target with utility for diabetes pharmacotherapy.
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Affiliation(s)
- Shaghayegh Norouzi
- Faculty of Health, School of Health Sciences, University of Tasmania, Newnham Campus, Launceston, TAS, 7250, Australia
| | - John Adulcikas
- Faculty of Health, School of Health Sciences, University of Tasmania, Newnham Campus, Launceston, TAS, 7250, Australia
| | - Sukhwinder Singh Sohal
- Faculty of Health, School of Health Sciences, University of Tasmania, Newnham Campus, Launceston, TAS, 7250, Australia
| | - Stephen Myers
- Faculty of Health, School of Health Sciences, University of Tasmania, Newnham Campus, Launceston, TAS, 7250, Australia.
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27
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Wei XB, Guo L, Liu Y, Zhou SR, Liu Y, Dou X, Du SY, Ding M, Peng WQ, Qian SW, Huang HY, Tang QQ. Synthesis of cytochrome c oxidase 1 (SCO1) inhibits insulin sensitivity by decreasing copper levels in adipocytes. Biochem Biophys Res Commun 2017. [PMID: 28647369 DOI: 10.1016/j.bbrc.2017.06.124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Dysregulation of insulin signaling leads to type 2 diabetes mellitus (T2DM) and other metabolic disorders. Obesity is an important contributor to insulin resistance, and although the understanding of this relationship has improved in recent years, the mechanism of obesity-induced insulin resistance is not completely understood. Disorders of copper metabolism tend to accompany the development of obesity, which increases the risk of insulin resistance. Synthesis of cytochrome c oxidase 1 (SCO1) functions in the assembly of cytochrome c oxidase (COX) and cellular copper homeostasis. However, the role of SCO1 in the regulation of metabolism remains unknown. Here, we found that obese mice had higher expression of SCO1 and lower levels of copper in white adipose tissue (WAT) than did the control mice. Overexpression of SCO1 in adipocytes was associated with copper deficiency. Copper increased insulin sensitivity by decreasing the level of phosphatase and tensin homolog (PTEN) protein. Ectopic expression of SCO1 led to insulin resistance and was accompanied by a decrease in intracellular copper level, and addition of copper abolished the inhibitory effect of SCO1 on insulin sensitivity. Our results demonstrated a novel role of SCO1 in modulating insulin sensitivity via the regulation of copper concentration in WAT and suggested a potential therapeutic target for T2DM.
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Affiliation(s)
- Xiang-Bo Wei
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Liang Guo
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Yang Liu
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Shui-Rong Zhou
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Yuan Liu
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Xin Dou
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Shao-Yue Du
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Meng Ding
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Wan-Qiu Peng
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Shu-Wen Qian
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Hai-Yan Huang
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Qi-Qun Tang
- Key Laboratory of Metabolism and Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.
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28
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Mills CA, Suzuki A, Arceci A, Mo JY, Duncan A, Salmon ED, Emanuele MJ. Nucleolar and spindle-associated protein 1 (NUSAP1) interacts with a SUMO E3 ligase complex during chromosome segregation. J Biol Chem 2017; 292:17178-17189. [PMID: 28900032 DOI: 10.1074/jbc.m117.796045] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/19/2017] [Indexed: 01/10/2023] Open
Abstract
The mitotic spindle is composed of dynamic microtubules and associated proteins that together direct chromosome movement during mitosis. The spindle plays a vital role in accurate chromosome segregation fidelity and is a therapeutic target in cancer. Nevertheless, the molecular mechanisms by which many spindle-associated proteins function remains unknown. The nucleolar and spindle-associated protein NUSAP1 is a microtubule-binding protein implicated in spindle stability and chromosome segregation. We show here that NUSAP1 localizes to dynamic spindle microtubules in a unique chromosome-centric pattern, in the vicinity of overlapping microtubules, during metaphase and anaphase of mitosis. Mass spectrometry-based analysis of endogenous NUSAP1 interacting proteins uncovered a cell cycle-regulated interaction between the RanBP2-RanGAP1-UBC9 SUMO E3 ligase complex and NUSAP1. Like NUSAP1 depletion, RanBP2 depletion impaired the response of cells to the microtubule poison Taxol. NUSAP1 contains a conserved SAP domain (SAF-A/B, Acinus, and PIAS). SAP domains are common among many other SUMO E3s, and are implicated in substrate recognition and ligase activity. We speculate that NUSAP1 contributes to accurate chromosome segregation by acting as a co-factor for RanBP2-RanGAP1-UBC9 during cell division.
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Affiliation(s)
- Christine A Mills
- From the Lineberger Comprehensive Cancer Center.,Departments of Pharmacology and
| | | | - Anthony Arceci
- From the Lineberger Comprehensive Cancer Center.,Curriculum in Genetics and Molecular Biology, and
| | - Jin Yao Mo
- Department of Medicine and Division of Infectious Diseases, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Alex Duncan
- From the Lineberger Comprehensive Cancer Center.,Department of Medicine and Division of Infectious Diseases, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | | | - Michael J Emanuele
- From the Lineberger Comprehensive Cancer Center, .,Departments of Pharmacology and.,Curriculum in Genetics and Molecular Biology, and
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29
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Fukunaka A, Fukada T, Bhin J, Suzuki L, Tsuzuki T, Takamine Y, Bin BH, Yoshihara T, Ichinoseki-Sekine N, Naito H, Miyatsuka T, Takamiya S, Sasaki T, Inagaki T, Kitamura T, Kajimura S, Watada H, Fujitani Y. Zinc transporter ZIP13 suppresses beige adipocyte biogenesis and energy expenditure by regulating C/EBP-β expression. PLoS Genet 2017; 13:e1006950. [PMID: 28854265 PMCID: PMC5576661 DOI: 10.1371/journal.pgen.1006950] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 07/31/2017] [Indexed: 11/19/2022] Open
Abstract
Given the relevance of beige adipocytes in adult humans, a better understanding of the molecular circuits involved in beige adipocyte biogenesis has provided new insight into human brown adipocyte biology. Genetic mutations in SLC39A13/ZIP13, a member of zinc transporter family, are known to reduce adipose tissue mass in humans; however, the underlying mechanisms remains unknown. Here, we demonstrate that the Zip13-deficient mouse shows enhanced beige adipocyte biogenesis and energy expenditure, and shows ameliorated diet-induced obesity and insulin resistance. Both gain- and loss-of-function studies showed that an accumulation of the CCAAT/enhancer binding protein-β (C/EBP-β) protein, which cooperates with dominant transcriptional co-regulator PR domain containing 16 (PRDM16) to determine brown/beige adipocyte lineage, is essential for the enhanced adipocyte browning caused by the loss of ZIP13. Furthermore, ZIP13-mediated zinc transport is a prerequisite for degrading the C/EBP-β protein to inhibit adipocyte browning. Thus, our data reveal an unexpected association between zinc homeostasis and beige adipocyte biogenesis, which may contribute significantly to the development of new therapies for obesity and metabolic syndrome. Inducible brown fat-like cells, named beige adipocytes have recently been a topic of great interest, mainly because they are induced in response to external cues, and are closely associated with adult human brown adipocyte. Therefore, the identification of selective molecular circuits involved in beige adipocyte biogenesis and thermogenesis will enable the selective induction of white adipocyte browning as a therapy for obesity. Here, we show that zinc homeostasis, which is controlled by ZIP13, a protein associated with human disease, is essential for the accurate regulation of beige adipocyte differentiation. Inhibition of ZIP13 function enhances beige adipocyte biogenesis and thermogenesis, highlighting the potential of ZIP13 as a therapeutic target for obesity and metabolic syndrome.
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Affiliation(s)
- Ayako Fukunaka
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory of Developmental Biology & Metabolism, Institute for Molecular & Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
- AMED-JST-CREST Program, Tokyo, Japan
| | - Toshiyuki Fukada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo, Japan
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Jinhyuk Bhin
- Department of Molecular Carcinogenesis, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Luka Suzuki
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takamasa Tsuzuki
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Yuri Takamine
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Bum-Ho Bin
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo, Japan
| | - Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | | | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Takeshi Miyatsuka
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shinzaburo Takamiya
- Department of Tropical Medicine and Parasitology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Tsutomu Sasaki
- Laboratory of Metabolic Signaling, Institute for Molecular & Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Takeshi Inagaki
- Laboratory of Epigenetics and Metabolism, Institute for Molecular & Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Tadahiro Kitamura
- Laboratory of Metabolic Signaling, Institute for Molecular & Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Shingo Kajimura
- UCSF Diabetes Center and Department of Cell and Tissue Biology, University of California–San Francisco, San Francisco, United States of America
- PRESTO-JST, Tokyo, Japan
| | - Hirotaka Watada
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Center for Identification of Diabetic Therapeutic Targets, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Center for Therapeutic Innovations in Diabetes, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoshio Fujitani
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory of Developmental Biology & Metabolism, Institute for Molecular & Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
- AMED-JST-CREST Program, Tokyo, Japan
- Center for Therapeutic Innovations in Diabetes, Juntendo University Graduate School of Medicine, Tokyo, Japan
- * E-mail:
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30
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Liu Y, Du SY, Ding M, Dou X, Zhang FF, Wu ZY, Qian SW, Zhang W, Tang QQ, Xu CJ. The BMP4-Smad signaling pathway regulates hyperandrogenism development in a female mouse model. J Biol Chem 2017; 292:11740-11750. [PMID: 28572510 DOI: 10.1074/jbc.m117.781369] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/31/2017] [Indexed: 11/06/2022] Open
Abstract
Polycystic ovary syndrome is a common endocrine disorder and a major cause of anovulatory sterility in women at reproductive age. Most patients with polycystic ovary syndrome have hyperandrogenism, caused by excess androgen synthesis. Bone morphogenetic protein 4 (BMP4) is an essential regulator of embryonic development and organ formation, and recent studies have also shown that BMP4 may be involved in female steroidogenesis process. However, the effect of BMP4 on hyperandrogenism remains unknown. Here, using a female mouse model of hyperandrogenism, we found that ovarian BMP4 levels were significantly decreased in hyperandrogenism. Elevated androgens inhibited BMP4 expression via activation of androgen receptors. Moreover, BMP4 treatment suppressed androgen synthesis in theca cells and promoted estrogen production in granulosa cells by regulating the expression of steroidogenic enzymes, including CYP11A, HSD3B2, CYP17A1, and CYP19A1 Consistently, knockdown of BMP4 augmented androgen levels and inhibited estrogen levels. Mechanistically, Smad signaling rather than the p38 MAPK pathway regulated androgen and estrogen formation, thereby mediating the effect of BMP4. Of note, BMP4-transgenic mice were protected against hyperandrogenism. Our observations clarify a vital role of BMP4 in controlling sex hormone levels and offer new insights into intervention for managing hyperandrogenism by targeting the BMP4-Smad signaling pathway.
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Affiliation(s)
- Yang Liu
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China; Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Shao-Yue Du
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
| | - Meng Ding
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Xin Dou
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Fei-Fei Zhang
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
| | - Zhi-Yong Wu
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
| | - Shu-Wen Qian
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Wei Zhang
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
| | - Qi-Qun Tang
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China.
| | - Cong-Jian Xu
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China.
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Pichler A, Fatouros C, Lee H, Eisenhardt N. SUMO conjugation - a mechanistic view. Biomol Concepts 2017; 8:13-36. [PMID: 28284030 DOI: 10.1515/bmc-2016-0030] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/06/2017] [Indexed: 02/08/2023] Open
Abstract
The regulation of protein fate by modification with the small ubiquitin-related modifier (SUMO) plays an essential and crucial role in most cellular pathways. Sumoylation is highly dynamic due to the opposing activities of SUMO conjugation and SUMO deconjugation. SUMO conjugation is performed by the hierarchical action of E1, E2 and E3 enzymes, while its deconjugation involves SUMO-specific proteases. In this review, we summarize and compare the mechanistic principles of how SUMO gets conjugated to its substrate. We focus on the interplay of the E1, E2 and E3 enzymes and discuss how specificity could be achieved given the limited number of conjugating enzymes and the thousands of substrates.
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Affiliation(s)
- Andrea Pichler
- Department of Epigenetics, Max Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, D-79108 Freiburg, Germany
| | - Chronis Fatouros
- Max Planck Institute of Immunobiology and Epigenetics, Department of Epigenetics, Stübeweg 51, D-79108 Freiburg, Germany
| | - Heekyoung Lee
- Max Planck Institute of Immunobiology and Epigenetics, Department of Epigenetics, Stübeweg 51, D-79108 Freiburg, Germany
| | - Nathalie Eisenhardt
- Max Planck Institute of Immunobiology and Epigenetics, Department of Epigenetics, Stübeweg 51, D-79108 Freiburg, Germany
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32
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Zhang J, Chen Z, Zhou Z, Yang P, Wang CY. Sumoylation Modulates the Susceptibility to Type 1 Diabetes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 963:299-322. [DOI: 10.1007/978-3-319-50044-7_18] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kapur R, Semple JW. Alleviation of gram-negative bacterial lung inflammation by targeting HECTD2. ANNALS OF TRANSLATIONAL MEDICINE 2017; 4:488. [PMID: 28149850 DOI: 10.21037/atm.2016.11.41] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rick Kapur
- Toronto Platelet Immunobiology Group, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Canadian Blood Services
| | - John W Semple
- Toronto Platelet Immunobiology Group, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Canadian Blood Services,; Department of Pharmacology, Medicine and Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada;; Division of Hematology and Transfusion Medicine, Lund University, Lund, Sweden
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Pencik J, Pham HTT, Schmoellerl J, Javaheri T, Schlederer M, Culig Z, Merkel O, Moriggl R, Grebien F, Kenner L. JAK-STAT signaling in cancer: From cytokines to non-coding genome. Cytokine 2016; 87:26-36. [PMID: 27349799 DOI: 10.1016/j.cyto.2016.06.017] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 06/15/2016] [Indexed: 12/13/2022]
Abstract
In the past decades, studies of the Janus kinases (JAKs) and signal transducers and activators of transcription (STATs) signaling have uncovered highly conserved programs linking cytokine signaling to the regulation of essential cellular mechanisms such as proliferation, invasion, survival, inflammation and immunity. Inhibitors of the JAK/STAT pathway are used for treatment of autoimmune diseases, such as rheumatoid arthritis or psoriasis. Aberrant JAK/STAT signaling has been identified to contribute to cancer progression and metastatic development. Targeting of JAK/STAT pathway is currently one of the most promising therapeutic strategies in prostate cancer (PCa), hematopoietic malignancies and sarcomas. Notably, newly identified regulators of JAK/STAT signaling, the non-coding RNAs transcripts and their role as important targets and potential clinical biomarkers are highlighted in this review. In addition to the established role of the JAK/STAT signaling pathway in traditional cytokine signaling the non-coding RNAs add yet another layer of hidden regulation and function. Understanding the crosstalk of non-coding RNA with JAK/STAT signaling in cancer is of critical importance and may result in better patient stratification not only in terms of prognosis but also in the context of therapy.
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Affiliation(s)
- Jan Pencik
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria; Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria.
| | - Ha Thi Thanh Pham
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, 1210 Vienna, Austria
| | - Johannes Schmoellerl
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Tahereh Javaheri
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, 1210 Vienna, Austria
| | - Michaela Schlederer
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Department for Pathology of Laboratory Animals, University of Veterinary Medicine Vienna, 1210 Vienna, Austria
| | - Zoran Culig
- Department of Urology, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Olaf Merkel
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria
| | - Richard Moriggl
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, 1210 Vienna, Austria
| | - Florian Grebien
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Lukas Kenner
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Department for Pathology of Laboratory Animals, University of Veterinary Medicine Vienna, 1210 Vienna, Austria.
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35
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Ozcan L, Ghorpade DS, Zheng Z, de Souza JC, Chen K, Bessler M, Bagloo M, Schrope B, Pestell R, Tabas I. Hepatocyte DACH1 Is Increased in Obesity via Nuclear Exclusion of HDAC4 and Promotes Hepatic Insulin Resistance. Cell Rep 2016; 15:2214-2225. [PMID: 27239042 PMCID: PMC5068925 DOI: 10.1016/j.celrep.2016.05.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 03/19/2016] [Accepted: 04/24/2016] [Indexed: 01/29/2023] Open
Abstract
Defective insulin signaling in hepatocytes is a key factor in type 2 diabetes. In obesity, activation of calcium/calmodulin-dependent protein kinase II (CaMKII) in hepatocytes suppresses ATF6, which triggers a PERK-ATF4-TRB3 pathway that disrupts insulin signaling. Elucidating how CaMKII suppresses ATF6 is therefore essential to understanding this insulin resistance pathway. We show that CaMKII phosphorylates and blocks nuclear translocation of histone deacetylase 4 (HDAC4). As a result, HDAC4-mediated SUMOylation of the corepressor DACH1 is decreased, which protects DACH1 from proteasomal degradation. DACH1, together with nuclear receptor corepressor (NCOR), represses Atf6 transcription, leading to activation of the PERK-TRB3 pathway and defective insulin signaling. DACH1 is increased in the livers of obese mice and humans, and treatment of obese mice with liver-targeted constitutively nuclear HDAC4 or DACH1 small hairpin RNA (shRNA) increases ATF6, improves hepatocyte insulin signaling, and protects against hyperglycemia and hyperinsulinemia. Thus, DACH1-mediated corepression in hepatocytes emerges as an important link between obesity and insulin resistance.
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Affiliation(s)
- Lale Ozcan
- Department of Medicine, Columbia University, New York, NY 10032, USA.
| | - Devram S Ghorpade
- Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Ze Zheng
- Department of Medicine, Columbia University, New York, NY 10032, USA
| | | | - Ke Chen
- Department of Cancer Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Marc Bessler
- Department of Surgery, Columbia University, New York, NY 10032, USA
| | - Melissa Bagloo
- Department of Surgery, Columbia University, New York, NY 10032, USA
| | - Beth Schrope
- Department of Surgery, Columbia University, New York, NY 10032, USA
| | - Richard Pestell
- Department of Cancer Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Ira Tabas
- Department of Medicine, Columbia University, New York, NY 10032, USA; Department of Physiology and Cellular Biophysics, Columbia University, New York, NY 10032, USA; Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA.
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36
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Coon TA, McKelvey AC, Lear T, Rajbhandari S, Dunn SR, Connelly W, Zhao JY, Han S, Liu Y, Weathington NM, McVerry BJ, Zhang Y, Chen BB. The proinflammatory role of HECTD2 in innate immunity and experimental lung injury. Sci Transl Med 2016; 7:295ra109. [PMID: 26157031 DOI: 10.1126/scitranslmed.aab3881] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Invading pathogens may trigger overactivation of the innate immune system, which results in the release of large amounts of proinflammatory cytokines (cytokine storm) and leads to the development of pulmonary edema, multiorgan failure, and shock. PIAS1 is a multifunctional and potent anti-inflammatory protein that negatively regulates several key inflammatory pathways such as Janus kinase (JAK)-signal transducer and activator of transcription (STAT) and nuclear factor κB (NF-κB). We discovered a ubiquitin E3 ligase, HECTD2, which ubiquitinated and mediated the degradation of PIAS1, thus increasing inflammation in an experimental pneumonia model. We found that GSK3β phosphorylation of PIAS1 provided a phosphodegron for HECTD2 targeting. We also identified a mislocalized HECTD2 polymorphism, HECTD2(A19P), that was present in 8.5% of the population and functioned to reduce inflammation. This polymorphism prevented HECTD2/PIAS1 nuclear interaction, thus preventing PIAS1 degradation. The HECTD2(A19P) polymorphism was also protective toward acute respiratory distress syndrome (ARDS). We then developed a small-molecule inhibitor, BC-1382, that targeted HECTD2 and attenuated lipopolysaccharide (LPS)- and Pseudomonas aeruginosa-induced lung inflammation. These studies describe an unreported innate immune pathway and suggest that mutation or antagonism of the E3 ligase HECTD2 results in reduced severity of lung inflammation by selectively modulating the abundance of the anti-inflammatory protein PIAS1.
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Affiliation(s)
- Tiffany A Coon
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Alison C McKelvey
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Travis Lear
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Shristi Rajbhandari
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Sarah R Dunn
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - William Connelly
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Joe Y Zhao
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - SeungHye Han
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Yuan Liu
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Nathaniel M Weathington
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Bryan J McVerry
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Yingze Zhang
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Bill B Chen
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, USA. Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA.
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37
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Ochaba J, Monteys AM, O'Rourke JG, Reidling JC, Steffan JS, Davidson BL, Thompson LM. PIAS1 Regulates Mutant Huntingtin Accumulation and Huntington's Disease-Associated Phenotypes In Vivo. Neuron 2016; 90:507-20. [PMID: 27146268 PMCID: PMC4942306 DOI: 10.1016/j.neuron.2016.03.016] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/04/2016] [Accepted: 03/15/2016] [Indexed: 12/21/2022]
Abstract
The disruption of protein quality control networks is central to pathology in Huntington's disease (HD) and other neurodegenerative disorders. The aberrant accumulation of insoluble high-molecular-weight protein complexes containing the Huntingtin (HTT) protein and SUMOylated protein corresponds to disease manifestation. We previously identified an HTT-selective E3 SUMO ligase, PIAS1, that regulates HTT accumulation and SUMO modification in cells. Here we investigated whether PIAS1 modulation in neurons alters HD-associated phenotypes in vivo. Instrastriatal injection of a PIAS1-directed miRNA significantly improved behavioral phenotypes in rapidly progressing mutant HTT (mHTT) fragment R6/2 mice. PIAS1 reduction prevented the accumulation of mHTT and SUMO- and ubiquitin-modified proteins, increased synaptophysin levels, and normalized key inflammatory markers. In contrast, PIAS1 overexpression exacerbated mHTT-associated phenotypes and aberrant protein accumulation. These results confirm the association between aberrant accumulation of expanded polyglutamine-dependent insoluble protein species and pathogenesis, and they link phenotypic benefit to reduction of these species through PIAS1 modulation.
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Affiliation(s)
- Joseph Ochaba
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA
| | - Alex Mas Monteys
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Jacqueline G O'Rourke
- Cedars-Sinai Medical Center, Board of Governors Regenerative Medicine Institute, Los Angeles, CA 90048, USA
| | - Jack C Reidling
- Institute of Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA
| | - Joan S Steffan
- Institute of Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA; Department of Psychiatry and Human Behavior, University of California, Irvine, Irvine, CA 92697, USA
| | - Beverly L Davidson
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Department of Pathology and Laboratory Medicine, The University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Leslie M Thompson
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; Institute of Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA 92697, USA; Department of Psychiatry and Human Behavior, University of California, Irvine, Irvine, CA 92697, USA.
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38
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Huang CB, Alimova Y, Ebersole JL. Macrophage polarization in response to oral commensals and pathogens. Pathog Dis 2016; 74:ftw011. [PMID: 26884502 DOI: 10.1093/femspd/ftw011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2016] [Indexed: 01/03/2023] Open
Abstract
Macrophages have been identified in the periodontium. Data have phenotypically described these cells, demonstrated changes with progressing periodontal disease, and identified their ability to function in antigen-presentation critical for adaptive immune responses to individual oral bacterium. Recent evidence has emphasized an important role for the plasticity of macrophage phenotypes, not only in the resulting function of these cells in various tissues, but also clear differences in the stimulatory signals that result in M1 (classical activation, inflammatory) and M2 (alternative activation/deactivated, immunomodulatory) cells. This investigation hypothesized that the oral pathogens, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans induce M1-type cells, while oral commensal bacteria primarily elicit macrophage functions consistent with an M2 phenotype. However, we observed that the M1 output from P. gingivalis challenge, showed exaggerated levels of pro-inflammatory cytokines, with a much lower production of chemokines related to T-cell recruitment. This contrasted with A. actinomycetemcomitans infection that increased both the pro-inflammatory cytokines and T-cell chemokines. Thus, it appears that P. gingivalis, as an oral pathogen, may have a unique capacity to alter the programming of the M1 macrophage resulting in a hyperinflammatory environment and minimizing the ability for T-cell immunomodulatory influx into the lesions.
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Affiliation(s)
- Chifu B Huang
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY 40536, USA
| | - Yelena Alimova
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY 40536, USA
| | - Jeffrey L Ebersole
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY 40536, USA
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39
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Expression of CCAAT/Enhancer Binding Protein Beta in Muscle Satellite Cells Inhibits Myogenesis in Cancer Cachexia. PLoS One 2015; 10:e0145583. [PMID: 26709824 PMCID: PMC4692409 DOI: 10.1371/journal.pone.0145583] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 12/04/2015] [Indexed: 01/09/2023] Open
Abstract
Cancer cachexia is a paraneoplastic syndrome that causes profound weight loss and muscle mass atrophy and is estimated to be the cause of up to 30% of cancer deaths. Though the exact cause is unknown, patients with cancer cachexia have increased muscle protein catabolism. In healthy muscle, injury activates skeletal muscle stem cells, called satellite cells, to differentiate and promote regeneration. Here, we provide evidence that this mechanism is inhibited in cancer cachexia due to persistent expression of CCAAT/Enhancer Binding Protein beta (C/EBPβ) in muscle myoblasts. C/EBPβ is a bzip transcription factor that is expressed in muscle satellite cells and is normally downregulated upon differentiation. However, in myoblasts exposed to a cachectic milieu, C/EBPβ expression remains elevated, despite activation to differentiate, resulting in the inhibition of myogenin expression and myogenesis. In vivo, cancer cachexia results in increased number of Pax7+ cells that also express C/EBPβ and the inhibition of normal repair mechanisms. Loss of C/EBPβ expression in primary myoblasts rescues differentiation under cachectic conditions without restoring myotube size, indicating that C/EBPβ is an important inhibitor of myogenesis in cancer cachexia.
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40
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Huber R, Panterodt T, Welz B, Christmann M, Friesenhagen J, Westphal A, Pietsch D, Brand K. C/EBPβ-LAP*/LAP Expression Is Mediated by RSK/eIF4B-Dependent Signalling and Boosted by Increased Protein Stability in Models of Monocytic Differentiation. PLoS One 2015; 10:e0144338. [PMID: 26646662 PMCID: PMC4672875 DOI: 10.1371/journal.pone.0144338] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 11/17/2015] [Indexed: 11/30/2022] Open
Abstract
The transcription factor C/EBPβ plays a key role in monocytic differentiation and inflammation. Its small isoform LIP is associated with proliferation at early premonocytic developmental stages and regulated via mTOR-dependent signalling. During later stages of (pre)monocytic differentiation there is a considerable increase in the large C/EBPβ isoforms LAP*/LAP which inhibit proliferation thus supporting terminal differentiation. Here, we showed in different models of monocytic differentiation that this dramatic increase in the LAP*/LAP protein and LAP/LIP ratio was accompanied by an only modest/retarded mRNA increase suggesting an important role for (post)translational mechanisms. We found that LAP*/LAP formation was induced via MEK/RSK-dependent cascades, whereas mTOR/S6K1 were not involved. Remarkably, LAP*/LAP expression was dependent on phosphorylated eIF4B, an acceleratory protein of RNA helicase eIF4A. PKR inhibition reduced the expression of eIF4B and C/EBPβ in an eIF2α-independent manner. Furthermore, under our conditions a marked stabilisation of LAP*/LAP protein occurred, accompanied by reduced chymotrypsin-like proteasome/calpain activities and increased calpastatin levels. Our study elucidates new signalling pathways inducing LAP*/LAP expression and indicates new alternative PKR functions in monocytes. The switch from mTOR- to RSK-mediated signalling to orchestrate eIF4B-dependent LAP*/LAP translation, accompanied by increased protein stability but only small mRNA changes, may be a prototypical example for the regulation of protein expression during selected processes of differentiation/proliferation.
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Affiliation(s)
- René Huber
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Thomas Panterodt
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Bastian Welz
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Martin Christmann
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Judith Friesenhagen
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Andreas Westphal
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Daniel Pietsch
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Korbinian Brand
- Institute of Clinical Chemistry, Hannover Medical School, 30625 Hannover, Germany
- * E-mail:
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41
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Liu Y, Ge X, Dou X, Guo L, Liu Y, Zhou SR, Wei XB, Qian SW, Huang HY, Xu CJ, Jia WP, Dang YJ, Li X, Tang QQ. Protein Inhibitor of Activated STAT 1 (PIAS1) Protects Against Obesity-Induced Insulin Resistance by Inhibiting Inflammation Cascade in Adipose Tissue. Diabetes 2015; 64:4061-74. [PMID: 26324179 DOI: 10.2337/db15-0278] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 07/15/2015] [Indexed: 11/13/2022]
Abstract
Obesity is associated with chronic low-level inflammation, especially in fat tissues, which contributes to insulin resistance and type 2 diabetes mellitus (T2DM). Protein inhibitor of activated STAT 1 (PIAS1) modulates a variety of cellular processes such as cell proliferation and DNA damage responses. Particularly, PIAS1 functions in the innate immune system and is a key regulator of the inflammation cascade. However, whether PIAS1 is involved in the regulation of insulin sensitivity remains unknown. Here, we demonstrated that PIAS1 expression in white adipose tissue (WAT) was downregulated by c-Jun N-terminal kinase in prediabetic mice models. Overexpression of PIAS1 in inguinal WAT of prediabetic mice significantly improved systemic insulin sensitivity, whereas knockdown of PIAS1 in wild-type mice led to insulin resistance. Mechanistically, PIAS1 inhibited the activation of stress-induced kinases and the expression of nuclear factor-κB target genes in adipocytes, mainly including proinflammatory and chemotactic factors. In doing so, PIAS1 inhibited macrophage infiltration in adipose tissue, thus suppressing amplification of the inflammation cascade, which in turn improved insulin sensitivity. These results were further verified in a fat transplantation model. Our findings shed light on the critical role of PIAS1 in controlling insulin sensitivity and suggest a therapeutic potential of PIAS1 in T2DM.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China Institute of Stem Cell Research and Regenerative Medicine, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xin Ge
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Xin Dou
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Liang Guo
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Yuan Liu
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China Institute of Stem Cell Research and Regenerative Medicine, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Shui-Rong Zhou
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Xiang-Bo Wei
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Shu-Wen Qian
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Hai-Yan Huang
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Cong-Jian Xu
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Disease, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Wei-Ping Jia
- Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yong-Jun Dang
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China
| | - Xi Li
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China Institute of Stem Cell Research and Regenerative Medicine, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Qi-Qun Tang
- Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education; Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai, China Institute of Stem Cell Research and Regenerative Medicine, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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Pulido-Salgado M, Vidal-Taboada JM, Saura J. C/EBPβ and C/EBPδ transcription factors: Basic biology and roles in the CNS. Prog Neurobiol 2015; 132:1-33. [PMID: 26143335 DOI: 10.1016/j.pneurobio.2015.06.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/08/2015] [Accepted: 06/16/2015] [Indexed: 02/01/2023]
Abstract
CCAAT/enhancer binding protein (C/EBP) β and C/EBPδ are transcription factors of the basic-leucine zipper class which share phylogenetic, structural and functional features. In this review we first describe in depth their basic molecular biology which includes fascinating aspects such as the regulated use of alternative initiation codons in the C/EBPβ mRNA. The physical interactions with multiple transcription factors which greatly opens the number of potentially regulated genes or the presence of at least five different types of post-translational modifications are also remarkable molecular mechanisms that modulate C/EBPβ and C/EBPδ function. In the second part, we review the present knowledge on the localization, expression changes and physiological roles of C/EBPβ and C/EBPδ in neurons, astrocytes and microglia. We conclude that C/EBPβ and C/EBPδ share two unique features related to their role in the CNS: whereas in neurons they participate in memory formation and synaptic plasticity, in glial cells they regulate the pro-inflammatory program. Because of their role in neuroinflammation, C/EBPβ and C/EBPδ in microglia are potential targets for treatment of neurodegenerative disorders. Any strategy to reduce C/EBPβ and C/EBPδ activity in neuroinflammation needs to take into account its potential side-effects in neurons. Therefore, cell-specific treatments will be required for the successful application of this strategy.
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Affiliation(s)
- Marta Pulido-Salgado
- Biochemistry and Molecular Biology Unit, School of Medicine, University of Barcelona, IDIBAPS, Casanova 143, planta 3, 08036 Barcelona, Spain
| | - Jose M Vidal-Taboada
- Biochemistry and Molecular Biology Unit, School of Medicine, University of Barcelona, IDIBAPS, Casanova 143, planta 3, 08036 Barcelona, Spain
| | - Josep Saura
- Biochemistry and Molecular Biology Unit, School of Medicine, University of Barcelona, IDIBAPS, Casanova 143, planta 3, 08036 Barcelona, Spain.
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Fu D, Lala-Tabbert N, Lee H, Wiper-Bergeron N. Mdm2 promotes myogenesis through the ubiquitination and degradation of CCAAT/enhancer-binding protein β. J Biol Chem 2015; 290:10200-7. [PMID: 25720496 DOI: 10.1074/jbc.m115.638577] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Indexed: 01/05/2023] Open
Abstract
Myogenesis is a tightly regulated differentiation process during which precursor cells express in a coordinated fashion the myogenic regulatory factors, while down-regulating the satellite cell marker Pax7. CCAAT/Enhancer-binding protein β (C/EBPβ) is also expressed in satellite cells and acts to maintain the undifferentiated state by stimulating Pax7 expression and by triggering a decrease in MyoD protein expression. Herein, we show that C/EBPβ protein is rapidly down-regulated upon induction of myogenesis and this is not due to changes in Cebpb mRNA expression. Rather, loss of C/EBPβ protein is accompanied by an increase in Mdm2 expression, an E3 ubiquitin ligase. We demonstrate that Mdm2 interacts with, ubiquitinates and targets C/EBPβ for degradation by the 26 S proteasome, leading to increased MyoD expression. Knockdown of Mdm2 expression in myoblasts using a shRNA resulted in high C/EBPβ levels and a blockade of myogenesis, indicating that Mdm2 is necessary for myogenic differentiation. Primary myoblasts expressing the shMdm2 construct were unable to contribute to muscle regeneration when grafted into cardiotoxin-injured muscle. The differentiation defect imposed by loss of Mdm2 could be partially rescued by loss of C/EBPβ, suggesting that the regulation of C/EBPβ turnover is a major role for Mdm2 in myoblasts. Taken together, we provide evidence that Mdm2 regulates entry into myogenesis by targeting C/EBPβ for degradation by the 26 S proteasome.
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Affiliation(s)
- Dechen Fu
- From the Department of Cellular and Molecular Medicine and
| | - Neena Lala-Tabbert
- Graduate Program in Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Hwabin Lee
- Graduate Program in Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
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Guo L, Li X, Tang QQ. Transcriptional regulation of adipocyte differentiation: a central role for CCAAT/enhancer-binding protein (C/EBP) β. J Biol Chem 2014; 290:755-61. [PMID: 25451943 DOI: 10.1074/jbc.r114.619957] [Citation(s) in RCA: 224] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A detailed understanding of the processes controlling adipogenesis is instrumental in the fight against the obesity epidemic. Adipogenesis is controlled by a transcriptional cascade composed of a large number of transcriptional factors, among which CCAAT/enhancer-binding protein (C/EBP) β plays an essential role. During 3T3-L1 adipocyte differentiation, C/EBPβ is induced early to transactivate the expression of C/EBPα and peroxisome proliferator-activated receptor γ (PPARγ), two master transcription factors for terminal adipocyte differentiation. Studies in recent years have revealed many new target genes of C/EBPβ, implicating its participation in many other processes during adipogenesis, such as mitotic clonal expansion, epigenetic regulation, unfolded protein response, and autophagy. Moreover, the function of C/EBPβ is highly regulated by post-translational modifications, which are crucial for the proper activation of the adipogenic program. Advances toward elucidation of the function and roles of the post-translational modification of C/EBPβ during adipogenesis will greatly improve our understanding of the molecular mechanisms governing adipogenesis.
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Affiliation(s)
- Liang Guo
- From the Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education and Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Xi Li
- From the Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education and Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Qi-Qun Tang
- From the Key Laboratory of Metabolism and Molecular Medicine, the Ministry of Education and Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, China
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Liu B, Wang T, Mei W, Li D, Cai R, Zuo Y, Cheng J. Small ubiquitin-like modifier (SUMO) protein-specific protease 1 de-SUMOylates Sharp-1 protein and controls adipocyte differentiation. J Biol Chem 2014; 289:22358-64. [PMID: 24942744 DOI: 10.1074/jbc.m114.571950] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Adipocyte differentiation is regulated by a transcriptional cascade that mainly includes CCAAT/enhancer-binding protein family members and the nuclear receptor peroxisome proliferator-activated receptor γ (PPARγ). Here we show the defects in adipocyte differentiation as well as PPARγ expression in Senp1(-/-) mouse embryonic fibroblast cells induced by adipogenic stimuli. We further determine that SENP1 is a specific de-SUMOylation protease for Sharp-1, a repressor for PPARγ transcription and adipogenesis. SENP1 enhances adipogenesis through de-SUMOylation of Sharp-1, which then releases Sharp-1 repression of PPARγ expression and adipocyte differentiation. These results reveal SENP1 as a novel regulator in adipogenesis.
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Affiliation(s)
- Bingting Liu
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Tianshi Wang
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Wenhan Mei
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and
| | - Dongdong Li
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and
| | - Rong Cai
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and
| | - Yong Zuo
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jinke Cheng
- From the Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation and State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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